* [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips
@ 2016-05-16 14:12 Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 1/9] softfloat: Implement run-time-configurable meaning of signaling NaN bit Aleksandar Markovic
` (9 more replies)
0 siblings, 10 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
v6 - code for hanlding MSA FCLASS instructions slightly simplified.
- handling of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> corrected for
nan2008 case.
- R/W bitmask for FCR31 introduced, and related functionalities
implemented.
- cleanup items for SoftFloat library are now in a separate patch.
- minor errors corrected.
v5 - platform initialization code revisited one more time.
- handling of CLASS.<S|D> and their MSA counterparts revisited.
- better orgranization of patches (squashing, splitting).
- corrected handling of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>.
- code cleanup item in genfarith() - order of cases.
- scripts/checkpatch.pl executed and errors addressed.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg02774.html)
v4 - Added code cleanup items:
a. Capitalization of hex constants in softfloat-specialize.h;
b. White spaces in softfloat-specialize.h;
c. Order of Mips helpers for CVT.<L|W>.<S|D>.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01962.html)
v3 - Patch series reorganized into 6 patches instead of 2.
- Commit messages improved.
- Except commit messages, net result of applying v3 and v2 is the same.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01870.html)
v2 - Relevant CPU initialization code changes revisited for all platforms.
- In connection with <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> and
<ABS|NEG>.<S|D> Mips instructions handling, decision on whether
pre-nan2008/pre-abs2008 or nan2008/abs2008 handling will apply
moved from run-time to translate-time.
- For Mips only, in nan2008 cases only, default NaN values fixed.
- For Mips only, in nan2008 cases only, order in pickNaNMulAdd() fixed.
- Code cleanup issues:
a. Constants <floatx80|float128>_default_nan_<low|high> removed;
b. Suffix <l|w>_<s|d> replaced with _<l|w>_<s|d> for some Mips helpers;
c. In vicinity of changes, fixed not-beautiful code formatting.
- Commit messages improved.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01232.html)
v1 - Initial version
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg06082.html)
Mips platform represents the most complex case among QEMU-supported
platforms in reference to certain aspects of floating-point arithmetics.
This is mostly a consequence of the fact that Mips platform, for many
reasons, evolved considerably over time related to floating-point
arithmetics standards (significantly more than other platforms).
It has been difficult for emulators like QEMU to support such variety
of configurations.
This patch series provides number of IEEE 754-2008-related features to
Mips platform. It addresses the most sensitive changes that require
modification of SoftFloat library, also used by most other platforms.
In order to make develpoment, testing, and integration easier, the patch
is split into two distinct parts:
1. Part 1 (patches 1/9, 2/9, 3/9, 4/9, 5/9) that does not change any
calculation or behavior on any platform (and, for that matter, even on
Mips platform). Its sole purpose is to address platform independant
issues in a non-invasive manner, and to make Part 2 possible.
2. Part 2 (patches 6/9, 7/9, 8/9, 9/9) that sets some Mips processors to
use provisions from Part 1, and additionally implements number of
IEEE 754-2008-related features for Mips, while, at the same time,
dealing with files located in directory target-mips only.
This patch series is based on the original set of patches proposed by Maciej W.
Rozycki: http://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg00968.html
Aleksandar Markovic (9):
softfloat: Implement run-time-configurable meaning of signaling NaN bit
softfloat: Clean code format in fpu/softfloat-specialize.h
softfloat: For Mips only, correct default NaN values
softfloat: For Mips only, correct order in pickNaNMulAdd()
linux-user: Update preprocessor constants for Mips-specific e_flags bits
target-mips: Activate IEEE 754-2008 signaling NaN bit meaning
target-mips: Add abs2008 flavor of <ABS|NEG>.<S|D>
target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
target-mips: Implement FCR31's R/W bitmask and related functionalities
fpu/softfloat-specialize.h | 664 +++++++++++++++++++++---------------------
fpu/softfloat.c | 172 +++++------
include/elf.h | 18 +-
include/fpu/softfloat.h | 45 +--
linux-user/main.c | 14 +
target-arm/helper-a64.c | 14 +-
target-arm/helper.c | 40 +--
target-m68k/helper.c | 6 +-
target-microblaze/op_helper.c | 6 +-
target-mips/cpu.h | 80 ++++-
target-mips/gdbstub.c | 8 +-
target-mips/helper.h | 22 +-
target-mips/msa_helper.c | 88 +++---
target-mips/op_helper.c | 463 ++++++++++++++++++++++++++---
target-mips/translate.c | 156 ++++++++--
target-mips/translate_init.c | 57 ++++
target-ppc/fpu_helper.c | 120 ++++----
target-s390x/fpu_helper.c | 28 +-
target-s390x/helper.h | 6 +-
target-s390x/translate.c | 6 +-
target-sh4/cpu.c | 1 +
target-unicore32/cpu.c | 2 +
22 files changed, 1322 insertions(+), 694 deletions(-)
--
1.9.1
^ permalink raw reply [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 1/9] softfloat: Implement run-time-configurable meaning of signaling NaN bit
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 2/9] softfloat: Clean code format in fpu/softfloat-specialize.h Aleksandar Markovic
` (8 subsequent siblings)
9 siblings, 0 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
This patch modifies SoftFloat library so that it can be configured in
run-time in relation to the meaning of signaling NaN bit, while, at the
same time, strictly preserving its behavior on all existing platforms.
Background:
In floating-point calculations, there is a need for denoting undefined or
unrepresentable values. This is achieved by defining certain floating-point
numerical values to be NaNs (which stands for "not a number"). For additional
reasons, virtually all modern floating-point unit implementations use two
kinds of NaNs: quiet and signaling. The binary representations of these two
kinds of NaNs, as a rule, differ only in one bit (that bit is, traditionally,
the first bit of mantissa).
Up to 2008, standards for floating-point did not specify all details about
binary representation of NaNs. More specifically, the meaning of the bit
that is used for distinguishing between signaling and quiet NaNs was not
strictly prescribed. (IEEE 754-2008 was the first floating-point standard
that defined that meaning clearly, see [1], p. 35) As a result, different
platforms took different approaches, and that presented considerable
challenge for multi-platform emulators like QEMU.
Mips platform represents the most complex case among QEMU-supported
platforms regarding signaling NaN bit. Up to the Release 6 of Mips
architecture, "1" in signaling NaN bit denoted signaling NaN, which is
opposite to IEEE 754-2008 standard. From Release 6 on, Mips architecture
adopted IEEE standard prescription, and "0" denotes signaling NaN. On top of
that, Mips architecture for SIMD (also known as MSA, or vector instructions)
also specifies signaling bit in accordance to IEEE standard. MSA unit can be
implemented with both pre-Release 6 and Release 6 main processor units.
QEMU uses SoftFloat library to implement various floating-point-related
instructions on all platforms. The current QEMU implementation allows for
defining meaning of signaling NaN bit during build time, and is implemented
via preprocessor macro called SNAN_BIT_IS_ONE.
On the other hand, the change in this patch enables SoftFloat library to be
configured in run-time. This configuration is meant to occur during CPU
initialization, at the moment when it is definitely known what desired
behavior for particular CPU (or any additional FPUs) is.
The change is implemented so that it is consistent with existing
implementation of similar cases. This means that structure float_status is
used for passing the information about desired signaling NaN bit on each
invocation of SoftFloat functions. The additional field in float_status is
called snan_bit_is_one, which supersedes macro SNAN_BIT_IS_ONE.
IMPORTANT:
This change is not meant to create any change in emulator behavior or
functionality on any platform. It just provides the means for SoftFloat
library to be used in a more flexible way - in other words, it will just
prepare SoftFloat library for usage related to Mips platform and its
specifics regarding signaling bit meaning, which is done in some of
subsequent patches from this series.
Further break down of changes:
1) Added field snan_bit_is_one to the structure float_status, and
correspondent setter function set_snan_bit_is_one().
2) Constants <float16|float32|float64|floatx80|float128>_default_nan
(used both internally and externally) converted to functions
<float16|float32|float64|floatx80|float128>_default_nan(float_status*).
This is necessary since they are dependent on signaling bit meaning.
At the same time, for the sake of code cleanup and simplicity, constants
<floatx80|float128>_default_nan_<low|high> (used only internally within
SoftFloat library) are removed, as not needed.
3) Added a float_status* argument to SoftFloat library functions
XXX_is_quiet_nan(XXX a_), XXX_is_signaling_nan(XXX a_),
XXX_maybe_silence_nan(XXX a_). This argument must be present in
order to enable correct invocation of new version of functions
XXX_default_nan(). (XXX is <float16|float32|float64|floatx80|float128>
here)
4) Updated code for all platforms to reflect changes in SoftFloat library.
This change is twofolds: it includes modifications of SoftFloat library
functions invocations, and an addition of invocation of function
set_snan_bit_is_one() during CPU initialization, with arguments that
are appropriate for each particular platform. It was established that
all platforms zero their main CPU data structures, so snan_bit_is_one(0)
in appropriate places is not added, as it is not needed.
[1] "IEEE Standard for Floating-Point Arithmetic",
IEEE Computer Society, August 29, 2008.
Tested-by: Bastian Koppelmann <address@hidden> (TriCore part)
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
fpu/softfloat-specialize.h | 542 ++++++++++++++++++++----------------------
fpu/softfloat.c | 172 ++++++--------
include/fpu/softfloat.h | 45 ++--
target-arm/helper-a64.c | 14 +-
target-arm/helper.c | 40 ++--
target-m68k/helper.c | 6 +-
target-microblaze/op_helper.c | 6 +-
target-mips/cpu.h | 5 +
target-mips/helper.h | 4 +-
target-mips/msa_helper.c | 88 +++----
target-mips/op_helper.c | 18 +-
target-mips/translate.c | 5 +-
target-mips/translate_init.c | 2 +
target-ppc/fpu_helper.c | 120 +++++-----
target-s390x/fpu_helper.c | 28 ++-
target-s390x/helper.h | 6 +-
target-s390x/translate.c | 6 +-
target-sh4/cpu.c | 1 +
target-unicore32/cpu.c | 2 +
19 files changed, 554 insertions(+), 556 deletions(-)
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index a4cbdad..4411d3c 100644
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -79,16 +79,6 @@ this code that are retained.
* version 2 or later. See the COPYING file in the top-level directory.
*/
-/* Does the target distinguish signaling NaNs from non-signaling NaNs
- * by setting the most significant bit of the mantissa for a signaling NaN?
- * (The more common choice is to have it be zero for SNaN and one for QNaN.)
- */
-#if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32)
-#define SNAN_BIT_IS_ONE 1
-#else
-#define SNAN_BIT_IS_ONE 0
-#endif
-
#if defined(TARGET_XTENSA)
/* Define for architectures which deviate from IEEE in not supporting
* signaling NaNs (so all NaNs are treated as quiet).
@@ -99,73 +89,94 @@ this code that are retained.
/*----------------------------------------------------------------------------
| The pattern for a default generated half-precision NaN.
*----------------------------------------------------------------------------*/
+float16 float16_default_nan(float_status *status)
+{
#if defined(TARGET_ARM)
-const float16 float16_default_nan = const_float16(0x7E00);
-#elif SNAN_BIT_IS_ONE
-const float16 float16_default_nan = const_float16(0x7DFF);
+ return const_float16(0x7E00);
#else
-const float16 float16_default_nan = const_float16(0xFE00);
+ if (status->snan_bit_is_one) {
+ return const_float16(0x7DFF);
+ } else {
+ return const_float16(0xFE00);
+ }
#endif
+}
/*----------------------------------------------------------------------------
| The pattern for a default generated single-precision NaN.
*----------------------------------------------------------------------------*/
+float32 float32_default_nan(float_status *status)
+{
#if defined(TARGET_SPARC)
-const float32 float32_default_nan = const_float32(0x7FFFFFFF);
+ return const_float32(0x7FFFFFFF);
#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) || \
defined(TARGET_XTENSA) || defined(TARGET_S390X) || defined(TARGET_TRICORE)
-const float32 float32_default_nan = const_float32(0x7FC00000);
-#elif SNAN_BIT_IS_ONE
-const float32 float32_default_nan = const_float32(0x7FBFFFFF);
+ return const_float32(0x7FC00000);
#else
-const float32 float32_default_nan = const_float32(0xFFC00000);
+ if (status->snan_bit_is_one) {
+ return const_float32(0x7FBFFFFF);
+ } else {
+ return const_float32(0xFFC00000);
+ }
#endif
+}
/*----------------------------------------------------------------------------
| The pattern for a default generated double-precision NaN.
*----------------------------------------------------------------------------*/
+float64 float64_default_nan(float_status *status)
+{
#if defined(TARGET_SPARC)
-const float64 float64_default_nan = const_float64(LIT64( 0x7FFFFFFFFFFFFFFF ));
+ return const_float64(LIT64(0x7FFFFFFFFFFFFFFF));
#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) || \
defined(TARGET_S390X)
-const float64 float64_default_nan = const_float64(LIT64( 0x7FF8000000000000 ));
-#elif SNAN_BIT_IS_ONE
-const float64 float64_default_nan = const_float64(LIT64(0x7FF7FFFFFFFFFFFF));
+ return const_float64(LIT64(0x7FF8000000000000));
#else
-const float64 float64_default_nan = const_float64(LIT64( 0xFFF8000000000000 ));
+ if (status->snan_bit_is_one) {
+ return const_float64(LIT64(0x7FF7FFFFFFFFFFFF));
+ } else {
+ return const_float64(LIT64(0xFFF8000000000000));
+ }
#endif
+}
/*----------------------------------------------------------------------------
| The pattern for a default generated extended double-precision NaN.
*----------------------------------------------------------------------------*/
-#if SNAN_BIT_IS_ONE
-#define floatx80_default_nan_high 0x7FFF
-#define floatx80_default_nan_low LIT64(0xBFFFFFFFFFFFFFFF)
-#else
-#define floatx80_default_nan_high 0xFFFF
-#define floatx80_default_nan_low LIT64( 0xC000000000000000 )
-#endif
+floatx80 floatx80_default_nan(float_status *status)
+{
+ floatx80 r;
-const floatx80 floatx80_default_nan
- = make_floatx80_init(floatx80_default_nan_high, floatx80_default_nan_low);
+ if (status->snan_bit_is_one) {
+ r.low = LIT64(0xBFFFFFFFFFFFFFFF);
+ r.high = 0x7FFF;
+ } else {
+ r.low = LIT64(0xC000000000000000);
+ r.high = 0xFFFF;
+ }
+ return r;
+}
/*----------------------------------------------------------------------------
-| The pattern for a default generated quadruple-precision NaN. The `high' and
-| `low' values hold the most- and least-significant bits, respectively.
+| The pattern for a default generated quadruple-precision NaN.
*----------------------------------------------------------------------------*/
-#if SNAN_BIT_IS_ONE
-#define float128_default_nan_high LIT64(0x7FFF7FFFFFFFFFFF)
-#define float128_default_nan_low LIT64(0xFFFFFFFFFFFFFFFF)
-#elif defined(TARGET_S390X)
-#define float128_default_nan_high LIT64( 0x7FFF800000000000 )
-#define float128_default_nan_low LIT64( 0x0000000000000000 )
+float128 float128_default_nan(float_status *status)
+{
+ float128 r;
+
+ if (status->snan_bit_is_one) {
+ r.low = LIT64(0xFFFFFFFFFFFFFFFF);
+ r.high = LIT64(0x7FFF7FFFFFFFFFFF);
+ } else {
+ r.low = LIT64(0x0000000000000000);
+#if defined(TARGET_S390X)
+ r.high = LIT64(0x7FFF800000000000);
#else
-#define float128_default_nan_high LIT64( 0xFFFF800000000000 )
-#define float128_default_nan_low LIT64( 0x0000000000000000 )
+ r.high = LIT64(0xFFFF800000000000);
#endif
-
-const float128 float128_default_nan
- = make_float128_init(float128_default_nan_high, float128_default_nan_low);
+ }
+ return r;
+}
/*----------------------------------------------------------------------------
| Raises the exceptions specified by `flags'. Floating-point traps can be
@@ -188,12 +199,12 @@ typedef struct {
} commonNaNT;
#ifdef NO_SIGNALING_NANS
-int float16_is_quiet_nan(float16 a_)
+int float16_is_quiet_nan(float16 a_, float_status *status)
{
return float16_is_any_nan(a_);
}
-int float16_is_signaling_nan(float16 a_)
+int float16_is_signaling_nan(float16 a_, float_status *status)
{
return 0;
}
@@ -203,14 +214,14 @@ int float16_is_signaling_nan(float16 a_)
| NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float16_is_quiet_nan(float16 a_)
+int float16_is_quiet_nan(float16 a_, float_status *status)
{
uint16_t a = float16_val(a_);
-#if SNAN_BIT_IS_ONE
- return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF);
-#else
- return ((a & ~0x8000) >= 0x7c80);
-#endif
+ if (status->snan_bit_is_one) {
+ return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF);
+ } else {
+ return ((a & ~0x8000) >= 0x7C80);
+ }
}
/*----------------------------------------------------------------------------
@@ -218,14 +229,14 @@ int float16_is_quiet_nan(float16 a_)
| NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float16_is_signaling_nan(float16 a_)
+int float16_is_signaling_nan(float16 a_, float_status *status)
{
uint16_t a = float16_val(a_);
-#if SNAN_BIT_IS_ONE
- return ((a & ~0x8000) >= 0x7c80);
-#else
- return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF);
-#endif
+ if (status->snan_bit_is_one) {
+ return ((a & ~0x8000) >= 0x7C80);
+ } else {
+ return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF);
+ }
}
#endif
@@ -233,20 +244,16 @@ int float16_is_signaling_nan(float16 a_)
| Returns a quiet NaN if the half-precision floating point value `a' is a
| signaling NaN; otherwise returns `a'.
*----------------------------------------------------------------------------*/
-float16 float16_maybe_silence_nan(float16 a_)
+float16 float16_maybe_silence_nan(float16 a_, float_status *status)
{
- if (float16_is_signaling_nan(a_)) {
-#if SNAN_BIT_IS_ONE
-# if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32)
- return float16_default_nan;
-# else
-# error Rules for silencing a signaling NaN are target-specific
-# endif
-#else
- uint16_t a = float16_val(a_);
- a |= (1 << 9);
- return make_float16(a);
-#endif
+ if (float16_is_signaling_nan(a_, status)) {
+ if (status->snan_bit_is_one) {
+ return float16_default_nan(status);
+ } else {
+ uint16_t a = float16_val(a_);
+ a |= (1 << 9);
+ return make_float16(a);
+ }
}
return a_;
}
@@ -261,7 +268,7 @@ static commonNaNT float16ToCommonNaN(float16 a, float_status *status)
{
commonNaNT z;
- if (float16_is_signaling_nan(a)) {
+ if (float16_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
z.sign = float16_val(a) >> 15;
@@ -280,24 +287,24 @@ static float16 commonNaNToFloat16(commonNaNT a, float_status *status)
uint16_t mantissa = a.high>>54;
if (status->default_nan_mode) {
- return float16_default_nan;
+ return float16_default_nan(status);
}
if (mantissa) {
return make_float16(((((uint16_t) a.sign) << 15)
| (0x1F << 10) | mantissa));
} else {
- return float16_default_nan;
+ return float16_default_nan(status);
}
}
#ifdef NO_SIGNALING_NANS
-int float32_is_quiet_nan(float32 a_)
+int float32_is_quiet_nan(float32 a_, float_status *status)
{
return float32_is_any_nan(a_);
}
-int float32_is_signaling_nan(float32 a_)
+int float32_is_signaling_nan(float32 a_, float_status *status)
{
return 0;
}
@@ -307,14 +314,14 @@ int float32_is_signaling_nan(float32 a_)
| NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float32_is_quiet_nan( float32 a_ )
+int float32_is_quiet_nan(float32 a_, float_status *status)
{
uint32_t a = float32_val(a_);
-#if SNAN_BIT_IS_ONE
- return (((a >> 22) & 0x1ff) == 0x1fe) && (a & 0x003fffff);
-#else
- return ((uint32_t)(a << 1) >= 0xff800000);
-#endif
+ if (status->snan_bit_is_one) {
+ return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF);
+ } else {
+ return ((uint32_t)(a << 1) >= 0xFF800000);
+ }
}
/*----------------------------------------------------------------------------
@@ -322,14 +329,14 @@ int float32_is_quiet_nan( float32 a_ )
| NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float32_is_signaling_nan( float32 a_ )
+int float32_is_signaling_nan(float32 a_, float_status *status)
{
uint32_t a = float32_val(a_);
-#if SNAN_BIT_IS_ONE
- return ((uint32_t)(a << 1) >= 0xff800000);
-#else
- return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF );
-#endif
+ if (status->snan_bit_is_one) {
+ return ((uint32_t)(a << 1) >= 0xFF800000);
+ } else {
+ return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF);
+ }
}
#endif
@@ -338,20 +345,16 @@ int float32_is_signaling_nan( float32 a_ )
| signaling NaN; otherwise returns `a'.
*----------------------------------------------------------------------------*/
-float32 float32_maybe_silence_nan( float32 a_ )
+float32 float32_maybe_silence_nan(float32 a_, float_status *status)
{
- if (float32_is_signaling_nan(a_)) {
-#if SNAN_BIT_IS_ONE
-# if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32)
- return float32_default_nan;
-# else
-# error Rules for silencing a signaling NaN are target-specific
-# endif
-#else
- uint32_t a = float32_val(a_);
- a |= (1 << 22);
- return make_float32(a);
-#endif
+ if (float32_is_signaling_nan(a_, status)) {
+ if (status->snan_bit_is_one) {
+ return float32_default_nan(status);
+ } else {
+ uint32_t a = float32_val(a_);
+ a |= (1 << 22);
+ return make_float32(a);
+ }
}
return a_;
}
@@ -366,7 +369,7 @@ static commonNaNT float32ToCommonNaN(float32 a, float_status *status)
{
commonNaNT z;
- if (float32_is_signaling_nan(a)) {
+ if (float32_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
z.sign = float32_val(a)>>31;
@@ -385,7 +388,7 @@ static float32 commonNaNToFloat32(commonNaNT a, float_status *status)
uint32_t mantissa = a.high>>41;
if (status->default_nan_mode) {
- return float32_default_nan;
+ return float32_default_nan(status);
}
if ( mantissa )
@@ -626,10 +629,10 @@ static float32 propagateFloat32NaN(float32 a, float32 b, float_status *status)
flag aIsLargerSignificand;
uint32_t av, bv;
- aIsQuietNaN = float32_is_quiet_nan( a );
- aIsSignalingNaN = float32_is_signaling_nan( a );
- bIsQuietNaN = float32_is_quiet_nan( b );
- bIsSignalingNaN = float32_is_signaling_nan( b );
+ aIsQuietNaN = float32_is_quiet_nan(a, status);
+ aIsSignalingNaN = float32_is_signaling_nan(a, status);
+ bIsQuietNaN = float32_is_quiet_nan(b, status);
+ bIsSignalingNaN = float32_is_signaling_nan(b, status);
av = float32_val(a);
bv = float32_val(b);
@@ -637,8 +640,9 @@ static float32 propagateFloat32NaN(float32 a, float32 b, float_status *status)
float_raise(float_flag_invalid, status);
}
- if (status->default_nan_mode)
- return float32_default_nan;
+ if (status->default_nan_mode) {
+ return float32_default_nan(status);
+ }
if ((uint32_t)(av<<1) < (uint32_t)(bv<<1)) {
aIsLargerSignificand = 0;
@@ -650,9 +654,9 @@ static float32 propagateFloat32NaN(float32 a, float32 b, float_status *status)
if (pickNaN(aIsQuietNaN, aIsSignalingNaN, bIsQuietNaN, bIsSignalingNaN,
aIsLargerSignificand)) {
- return float32_maybe_silence_nan(b);
+ return float32_maybe_silence_nan(b, status);
} else {
- return float32_maybe_silence_nan(a);
+ return float32_maybe_silence_nan(a, status);
}
}
@@ -673,12 +677,12 @@ static float32 propagateFloat32MulAddNaN(float32 a, float32 b,
cIsQuietNaN, cIsSignalingNaN;
int which;
- aIsQuietNaN = float32_is_quiet_nan(a);
- aIsSignalingNaN = float32_is_signaling_nan(a);
- bIsQuietNaN = float32_is_quiet_nan(b);
- bIsSignalingNaN = float32_is_signaling_nan(b);
- cIsQuietNaN = float32_is_quiet_nan(c);
- cIsSignalingNaN = float32_is_signaling_nan(c);
+ aIsQuietNaN = float32_is_quiet_nan(a, status);
+ aIsSignalingNaN = float32_is_signaling_nan(a, status);
+ bIsQuietNaN = float32_is_quiet_nan(b, status);
+ bIsSignalingNaN = float32_is_signaling_nan(b, status);
+ cIsQuietNaN = float32_is_quiet_nan(c, status);
+ cIsSignalingNaN = float32_is_signaling_nan(c, status);
if (aIsSignalingNaN | bIsSignalingNaN | cIsSignalingNaN) {
float_raise(float_flag_invalid, status);
@@ -692,29 +696,29 @@ static float32 propagateFloat32MulAddNaN(float32 a, float32 b,
/* Note that this check is after pickNaNMulAdd so that function
* has an opportunity to set the Invalid flag.
*/
- return float32_default_nan;
+ return float32_default_nan(status);
}
switch (which) {
case 0:
- return float32_maybe_silence_nan(a);
+ return float32_maybe_silence_nan(a, status);
case 1:
- return float32_maybe_silence_nan(b);
+ return float32_maybe_silence_nan(b, status);
case 2:
- return float32_maybe_silence_nan(c);
+ return float32_maybe_silence_nan(c, status);
case 3:
default:
- return float32_default_nan;
+ return float32_default_nan(status);
}
}
#ifdef NO_SIGNALING_NANS
-int float64_is_quiet_nan(float64 a_)
+int float64_is_quiet_nan(float64 a_, float_status *status)
{
return float64_is_any_nan(a_);
}
-int float64_is_signaling_nan(float64 a_)
+int float64_is_signaling_nan(float64 a_, float_status *status)
{
return 0;
}
@@ -724,15 +728,15 @@ int float64_is_signaling_nan(float64 a_)
| NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float64_is_quiet_nan( float64 a_ )
+int float64_is_quiet_nan(float64 a_, float_status *status)
{
uint64_t a = float64_val(a_);
-#if SNAN_BIT_IS_ONE
- return (((a >> 51) & 0xfff) == 0xffe)
- && (a & 0x0007ffffffffffffULL);
-#else
- return ((a << 1) >= 0xfff0000000000000ULL);
-#endif
+ if (status->snan_bit_is_one) {
+ return (((a >> 51) & 0xFFF) == 0xFFE)
+ && (a & 0x0007FFFFFFFFFFFFULL);
+ } else {
+ return ((a << 1) >= 0xFFF0000000000000ULL);
+ }
}
/*----------------------------------------------------------------------------
@@ -740,16 +744,16 @@ int float64_is_quiet_nan( float64 a_ )
| NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float64_is_signaling_nan( float64 a_ )
+int float64_is_signaling_nan(float64 a_, float_status *status)
{
uint64_t a = float64_val(a_);
-#if SNAN_BIT_IS_ONE
- return ((a << 1) >= 0xfff0000000000000ULL);
-#else
- return
- ( ( ( a>>51 ) & 0xFFF ) == 0xFFE )
- && ( a & LIT64( 0x0007FFFFFFFFFFFF ) );
-#endif
+ if (status->snan_bit_is_one) {
+ return ((a << 1) >= 0xFFF0000000000000ULL);
+ } else {
+ return
+ (((a >> 51) & 0xFFF) == 0xFFE)
+ && (a & LIT64(0x0007FFFFFFFFFFFF));
+ }
}
#endif
@@ -758,20 +762,16 @@ int float64_is_signaling_nan( float64 a_ )
| signaling NaN; otherwise returns `a'.
*----------------------------------------------------------------------------*/
-float64 float64_maybe_silence_nan( float64 a_ )
+float64 float64_maybe_silence_nan(float64 a_, float_status *status)
{
- if (float64_is_signaling_nan(a_)) {
-#if SNAN_BIT_IS_ONE
-# if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32)
- return float64_default_nan;
-# else
-# error Rules for silencing a signaling NaN are target-specific
-# endif
-#else
- uint64_t a = float64_val(a_);
- a |= LIT64( 0x0008000000000000 );
- return make_float64(a);
-#endif
+ if (float64_is_signaling_nan(a_, status)) {
+ if (status->snan_bit_is_one) {
+ return float64_default_nan(status);
+ } else {
+ uint64_t a = float64_val(a_);
+ a |= LIT64(0x0008000000000000);
+ return make_float64(a);
+ }
}
return a_;
}
@@ -786,7 +786,7 @@ static commonNaNT float64ToCommonNaN(float64 a, float_status *status)
{
commonNaNT z;
- if (float64_is_signaling_nan(a)) {
+ if (float64_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
z.sign = float64_val(a)>>63;
@@ -802,10 +802,10 @@ static commonNaNT float64ToCommonNaN(float64 a, float_status *status)
static float64 commonNaNToFloat64(commonNaNT a, float_status *status)
{
- uint64_t mantissa = a.high>>12;
+ uint64_t mantissa = a.high >> 12;
if (status->default_nan_mode) {
- return float64_default_nan;
+ return float64_default_nan(status);
}
if ( mantissa )
@@ -829,10 +829,10 @@ static float64 propagateFloat64NaN(float64 a, float64 b, float_status *status)
flag aIsLargerSignificand;
uint64_t av, bv;
- aIsQuietNaN = float64_is_quiet_nan( a );
- aIsSignalingNaN = float64_is_signaling_nan( a );
- bIsQuietNaN = float64_is_quiet_nan( b );
- bIsSignalingNaN = float64_is_signaling_nan( b );
+ aIsQuietNaN = float64_is_quiet_nan(a, status);
+ aIsSignalingNaN = float64_is_signaling_nan(a, status);
+ bIsQuietNaN = float64_is_quiet_nan(b, status);
+ bIsSignalingNaN = float64_is_signaling_nan(b, status);
av = float64_val(a);
bv = float64_val(b);
@@ -840,8 +840,9 @@ static float64 propagateFloat64NaN(float64 a, float64 b, float_status *status)
float_raise(float_flag_invalid, status);
}
- if (status->default_nan_mode)
- return float64_default_nan;
+ if (status->default_nan_mode) {
+ return float64_default_nan(status);
+ }
if ((uint64_t)(av<<1) < (uint64_t)(bv<<1)) {
aIsLargerSignificand = 0;
@@ -853,9 +854,9 @@ static float64 propagateFloat64NaN(float64 a, float64 b, float_status *status)
if (pickNaN(aIsQuietNaN, aIsSignalingNaN, bIsQuietNaN, bIsSignalingNaN,
aIsLargerSignificand)) {
- return float64_maybe_silence_nan(b);
+ return float64_maybe_silence_nan(b, status);
} else {
- return float64_maybe_silence_nan(a);
+ return float64_maybe_silence_nan(a, status);
}
}
@@ -876,12 +877,12 @@ static float64 propagateFloat64MulAddNaN(float64 a, float64 b,
cIsQuietNaN, cIsSignalingNaN;
int which;
- aIsQuietNaN = float64_is_quiet_nan(a);
- aIsSignalingNaN = float64_is_signaling_nan(a);
- bIsQuietNaN = float64_is_quiet_nan(b);
- bIsSignalingNaN = float64_is_signaling_nan(b);
- cIsQuietNaN = float64_is_quiet_nan(c);
- cIsSignalingNaN = float64_is_signaling_nan(c);
+ aIsQuietNaN = float64_is_quiet_nan(a, status);
+ aIsSignalingNaN = float64_is_signaling_nan(a, status);
+ bIsQuietNaN = float64_is_quiet_nan(b, status);
+ bIsSignalingNaN = float64_is_signaling_nan(b, status);
+ cIsQuietNaN = float64_is_quiet_nan(c, status);
+ cIsSignalingNaN = float64_is_signaling_nan(c, status);
if (aIsSignalingNaN | bIsSignalingNaN | cIsSignalingNaN) {
float_raise(float_flag_invalid, status);
@@ -895,29 +896,29 @@ static float64 propagateFloat64MulAddNaN(float64 a, float64 b,
/* Note that this check is after pickNaNMulAdd so that function
* has an opportunity to set the Invalid flag.
*/
- return float64_default_nan;
+ return float64_default_nan(status);
}
switch (which) {
case 0:
- return float64_maybe_silence_nan(a);
+ return float64_maybe_silence_nan(a, status);
case 1:
- return float64_maybe_silence_nan(b);
+ return float64_maybe_silence_nan(b, status);
case 2:
- return float64_maybe_silence_nan(c);
+ return float64_maybe_silence_nan(c, status);
case 3:
default:
- return float64_default_nan;
+ return float64_default_nan(status);
}
}
#ifdef NO_SIGNALING_NANS
-int floatx80_is_quiet_nan(floatx80 a_)
+int floatx80_is_quiet_nan(floatx80 a_, float_status *status)
{
return floatx80_is_any_nan(a_);
}
-int floatx80_is_signaling_nan(floatx80 a_)
+int floatx80_is_signaling_nan(floatx80 a_, float_status *status)
{
return 0;
}
@@ -928,19 +929,19 @@ int floatx80_is_signaling_nan(floatx80 a_)
| function for other types as floatx80 has an explicit bit.
*----------------------------------------------------------------------------*/
-int floatx80_is_quiet_nan( floatx80 a )
+int floatx80_is_quiet_nan(floatx80 a, float_status *status)
{
-#if SNAN_BIT_IS_ONE
- uint64_t aLow;
+ if (status->snan_bit_is_one) {
+ uint64_t aLow;
- aLow = a.low & ~0x4000000000000000ULL;
- return ((a.high & 0x7fff) == 0x7fff)
- && (aLow << 1)
- && (a.low == aLow);
-#else
- return ( ( a.high & 0x7FFF ) == 0x7FFF )
- && (LIT64( 0x8000000000000000 ) <= ((uint64_t) ( a.low<<1 )));
-#endif
+ aLow = a.low & ~0x4000000000000000ULL;
+ return ((a.high & 0x7fff) == 0x7fff)
+ && (aLow << 1)
+ && (a.low == aLow);
+ } else {
+ return ( ( a.high & 0x7FFF ) == 0x7FFF )
+ && (LIT64( 0x8000000000000000 ) <= ((uint64_t) ( a.low<<1 )));
+ }
}
/*----------------------------------------------------------------------------
@@ -949,20 +950,20 @@ int floatx80_is_quiet_nan( floatx80 a )
| function for other types as floatx80 has an explicit bit.
*----------------------------------------------------------------------------*/
-int floatx80_is_signaling_nan( floatx80 a )
+int floatx80_is_signaling_nan(floatx80 a, float_status *status)
{
-#if SNAN_BIT_IS_ONE
- return ((a.high & 0x7fff) == 0x7fff)
- && ((a.low << 1) >= 0x8000000000000000ULL);
-#else
- uint64_t aLow;
+ if (status->snan_bit_is_one) {
+ return ((a.high & 0x7FFF) == 0x7FFF)
+ && ((a.low << 1) >= 0x8000000000000000ULL);
+ } else {
+ uint64_t aLow;
- aLow = a.low & ~ LIT64( 0x4000000000000000 );
- return
- ( ( a.high & 0x7FFF ) == 0x7FFF )
- && (uint64_t) ( aLow<<1 )
- && ( a.low == aLow );
-#endif
+ aLow = a.low & ~ LIT64( 0x4000000000000000 );
+ return
+ ( ( a.high & 0x7FFF ) == 0x7FFF )
+ && (uint64_t) ( aLow<<1 )
+ && ( a.low == aLow );
+ }
}
#endif
@@ -971,20 +972,15 @@ int floatx80_is_signaling_nan( floatx80 a )
| `a' is a signaling NaN; otherwise returns `a'.
*----------------------------------------------------------------------------*/
-floatx80 floatx80_maybe_silence_nan( floatx80 a )
+floatx80 floatx80_maybe_silence_nan(floatx80 a, float_status *status)
{
- if (floatx80_is_signaling_nan(a)) {
-#if SNAN_BIT_IS_ONE
-# if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32)
- a.low = floatx80_default_nan_low;
- a.high = floatx80_default_nan_high;
-# else
-# error Rules for silencing a signaling NaN are target-specific
-# endif
-#else
- a.low |= LIT64( 0xC000000000000000 );
- return a;
-#endif
+ if (floatx80_is_signaling_nan(a, status)) {
+ if (status->snan_bit_is_one) {
+ a = floatx80_default_nan(status);
+ } else {
+ a.low |= LIT64(0xC000000000000000);
+ return a;
+ }
}
return a;
}
@@ -997,9 +993,10 @@ floatx80 floatx80_maybe_silence_nan( floatx80 a )
static commonNaNT floatx80ToCommonNaN(floatx80 a, float_status *status)
{
+ floatx80 dflt;
commonNaNT z;
- if (floatx80_is_signaling_nan(a)) {
+ if (floatx80_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
if ( a.low >> 63 ) {
@@ -1007,9 +1004,10 @@ static commonNaNT floatx80ToCommonNaN(floatx80 a, float_status *status)
z.low = 0;
z.high = a.low << 1;
} else {
- z.sign = floatx80_default_nan_high >> 15;
+ dflt = floatx80_default_nan(status);
+ z.sign = dflt.high >> 15;
z.low = 0;
- z.high = floatx80_default_nan_low << 1;
+ z.high = dflt.low << 1;
}
return z;
}
@@ -1024,19 +1022,15 @@ static floatx80 commonNaNToFloatx80(commonNaNT a, float_status *status)
floatx80 z;
if (status->default_nan_mode) {
- z.low = floatx80_default_nan_low;
- z.high = floatx80_default_nan_high;
- return z;
+ return floatx80_default_nan(status);
}
if (a.high >> 1) {
z.low = LIT64( 0x8000000000000000 ) | a.high >> 1;
z.high = ( ( (uint16_t) a.sign )<<15 ) | 0x7FFF;
} else {
- z.low = floatx80_default_nan_low;
- z.high = floatx80_default_nan_high;
+ z = floatx80_default_nan(status);
}
-
return z;
}
@@ -1052,19 +1046,17 @@ static floatx80 propagateFloatx80NaN(floatx80 a, floatx80 b,
flag aIsQuietNaN, aIsSignalingNaN, bIsQuietNaN, bIsSignalingNaN;
flag aIsLargerSignificand;
- aIsQuietNaN = floatx80_is_quiet_nan( a );
- aIsSignalingNaN = floatx80_is_signaling_nan( a );
- bIsQuietNaN = floatx80_is_quiet_nan( b );
- bIsSignalingNaN = floatx80_is_signaling_nan( b );
+ aIsQuietNaN = floatx80_is_quiet_nan(a, status);
+ aIsSignalingNaN = floatx80_is_signaling_nan(a, status);
+ bIsQuietNaN = floatx80_is_quiet_nan(b, status);
+ bIsSignalingNaN = floatx80_is_signaling_nan(b, status);
if (aIsSignalingNaN | bIsSignalingNaN) {
float_raise(float_flag_invalid, status);
}
if (status->default_nan_mode) {
- a.low = floatx80_default_nan_low;
- a.high = floatx80_default_nan_high;
- return a;
+ return floatx80_default_nan(status);
}
if (a.low < b.low) {
@@ -1077,19 +1069,19 @@ static floatx80 propagateFloatx80NaN(floatx80 a, floatx80 b,
if (pickNaN(aIsQuietNaN, aIsSignalingNaN, bIsQuietNaN, bIsSignalingNaN,
aIsLargerSignificand)) {
- return floatx80_maybe_silence_nan(b);
+ return floatx80_maybe_silence_nan(b, status);
} else {
- return floatx80_maybe_silence_nan(a);
+ return floatx80_maybe_silence_nan(a, status);
}
}
#ifdef NO_SIGNALING_NANS
-int float128_is_quiet_nan(float128 a_)
+int float128_is_quiet_nan(float128 a_, float_status *status)
{
return float128_is_any_nan(a_);
}
-int float128_is_signaling_nan(float128 a_)
+int float128_is_signaling_nan(float128 a_, float_status *status)
{
return 0;
}
@@ -1099,16 +1091,16 @@ int float128_is_signaling_nan(float128 a_)
| NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float128_is_quiet_nan( float128 a )
+int float128_is_quiet_nan(float128 a, float_status *status)
{
-#if SNAN_BIT_IS_ONE
- return (((a.high >> 47) & 0xffff) == 0xfffe)
- && (a.low || (a.high & 0x00007fffffffffffULL));
-#else
- return
- ((a.high << 1) >= 0xffff000000000000ULL)
- && (a.low || (a.high & 0x0000ffffffffffffULL));
-#endif
+ if (status->snan_bit_is_one) {
+ return (((a.high >> 47) & 0xffff) == 0xfffe)
+ && (a.low || (a.high & 0x00007fffffffffffULL));
+ } else {
+ return
+ ((a.high << 1) >= 0xffff000000000000ULL)
+ && (a.low || (a.high & 0x0000ffffffffffffULL));
+ }
}
/*----------------------------------------------------------------------------
@@ -1116,17 +1108,17 @@ int float128_is_quiet_nan( float128 a )
| signaling NaN; otherwise returns 0.
*----------------------------------------------------------------------------*/
-int float128_is_signaling_nan( float128 a )
+int float128_is_signaling_nan(float128 a, float_status *status)
{
-#if SNAN_BIT_IS_ONE
- return
- ((a.high << 1) >= 0xffff000000000000ULL)
- && (a.low || (a.high & 0x0000ffffffffffffULL));
-#else
- return
- ( ( ( a.high>>47 ) & 0xFFFF ) == 0xFFFE )
- && ( a.low || ( a.high & LIT64( 0x00007FFFFFFFFFFF ) ) );
-#endif
+ if (status->snan_bit_is_one) {
+ return
+ ((a.high << 1) >= 0xffff000000000000ULL)
+ && (a.low || (a.high & 0x0000ffffffffffffULL));
+ } else {
+ return
+ ( ( ( a.high>>47 ) & 0xFFFF ) == 0xFFFE )
+ && ( a.low || ( a.high & LIT64( 0x00007FFFFFFFFFFF ) ) );
+ }
}
#endif
@@ -1135,20 +1127,15 @@ int float128_is_signaling_nan( float128 a )
| a signaling NaN; otherwise returns `a'.
*----------------------------------------------------------------------------*/
-float128 float128_maybe_silence_nan( float128 a )
+float128 float128_maybe_silence_nan(float128 a, float_status *status)
{
- if (float128_is_signaling_nan(a)) {
-#if SNAN_BIT_IS_ONE
-# if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32)
- a.low = float128_default_nan_low;
- a.high = float128_default_nan_high;
-# else
-# error Rules for silencing a signaling NaN are target-specific
-# endif
-#else
- a.high |= LIT64( 0x0000800000000000 );
- return a;
-#endif
+ if (float128_is_signaling_nan(a, status)) {
+ if (status->snan_bit_is_one) {
+ a = float128_default_nan(status);
+ } else {
+ a.high |= LIT64(0x0000800000000000);
+ return a;
+ }
}
return a;
}
@@ -1163,7 +1150,7 @@ static commonNaNT float128ToCommonNaN(float128 a, float_status *status)
{
commonNaNT z;
- if (float128_is_signaling_nan(a)) {
+ if (float128_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
z.sign = a.high>>63;
@@ -1181,9 +1168,7 @@ static float128 commonNaNToFloat128(commonNaNT a, float_status *status)
float128 z;
if (status->default_nan_mode) {
- z.low = float128_default_nan_low;
- z.high = float128_default_nan_high;
- return z;
+ return float128_default_nan(status);
}
shift128Right( a.high, a.low, 16, &z.high, &z.low );
@@ -1203,19 +1188,17 @@ static float128 propagateFloat128NaN(float128 a, float128 b,
flag aIsQuietNaN, aIsSignalingNaN, bIsQuietNaN, bIsSignalingNaN;
flag aIsLargerSignificand;
- aIsQuietNaN = float128_is_quiet_nan( a );
- aIsSignalingNaN = float128_is_signaling_nan( a );
- bIsQuietNaN = float128_is_quiet_nan( b );
- bIsSignalingNaN = float128_is_signaling_nan( b );
+ aIsQuietNaN = float128_is_quiet_nan(a, status);
+ aIsSignalingNaN = float128_is_signaling_nan(a, status);
+ bIsQuietNaN = float128_is_quiet_nan(b, status);
+ bIsSignalingNaN = float128_is_signaling_nan(b, status);
if (aIsSignalingNaN | bIsSignalingNaN) {
float_raise(float_flag_invalid, status);
}
if (status->default_nan_mode) {
- a.low = float128_default_nan_low;
- a.high = float128_default_nan_high;
- return a;
+ return float128_default_nan(status);
}
if (lt128(a.high<<1, a.low, b.high<<1, b.low)) {
@@ -1228,9 +1211,8 @@ static float128 propagateFloat128NaN(float128 a, float128 b,
if (pickNaN(aIsQuietNaN, aIsSignalingNaN, bIsQuietNaN, bIsSignalingNaN,
aIsLargerSignificand)) {
- return float128_maybe_silence_nan(b);
+ return float128_maybe_silence_nan(b, status);
} else {
- return float128_maybe_silence_nan(a);
+ return float128_maybe_silence_nan(a, status);
}
}
-
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 166c48e..9b1eccf 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -2105,7 +2105,7 @@ static float32 subFloat32Sigs(float32 a, float32 b, flag zSign,
return propagateFloat32NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
if ( aExp == 0 ) {
aExp = 1;
@@ -2234,7 +2234,7 @@ float32 float32_mul(float32 a, float32 b, float_status *status)
}
if ( ( bExp | bSig ) == 0 ) {
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
return packFloat32( zSign, 0xFF, 0 );
}
@@ -2244,7 +2244,7 @@ float32 float32_mul(float32 a, float32 b, float_status *status)
}
if ( ( aExp | aSig ) == 0 ) {
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
return packFloat32( zSign, 0xFF, 0 );
}
@@ -2299,7 +2299,7 @@ float32 float32_div(float32 a, float32 b, float_status *status)
return propagateFloat32NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
return packFloat32( zSign, 0xFF, 0 );
}
@@ -2313,7 +2313,7 @@ float32 float32_div(float32 a, float32 b, float_status *status)
if ( bSig == 0 ) {
if ( ( aExp | aSig ) == 0 ) {
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
float_raise(float_flag_divbyzero, status);
return packFloat32( zSign, 0xFF, 0 );
@@ -2367,7 +2367,7 @@ float32 float32_rem(float32 a, float32 b, float_status *status)
return propagateFloat32NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
if ( bExp == 0xFF ) {
if (bSig) {
@@ -2378,7 +2378,7 @@ float32 float32_rem(float32 a, float32 b, float_status *status)
if ( bExp == 0 ) {
if ( bSig == 0 ) {
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
normalizeFloat32Subnormal( bSig, &bExp, &bSig );
}
@@ -2493,7 +2493,7 @@ float32 float32_muladd(float32 a, float32 b, float32 c, int flags,
if (infzero) {
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
if (flags & float_muladd_negate_c) {
@@ -2514,7 +2514,7 @@ float32 float32_muladd(float32 a, float32 b, float32 c, int flags,
if (pInf && (pSign ^ cSign)) {
/* addition of opposite-signed infinities => InvalidOperation */
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
/* Otherwise generate an infinity of the same sign */
return packFloat32(cSign ^ signflip, 0xff, 0);
@@ -2690,12 +2690,12 @@ float32 float32_sqrt(float32 a, float_status *status)
}
if ( ! aSign ) return a;
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
if ( aSign ) {
if ( ( aExp | aSig ) == 0 ) return a;
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
if ( aExp == 0 ) {
if ( aSig == 0 ) return float32_zero;
@@ -2828,7 +2828,7 @@ float32 float32_log2(float32 a, float_status *status)
}
if ( aSign ) {
float_raise(float_flag_invalid, status);
- return float32_default_nan;
+ return float32_default_nan(status);
}
if ( aExp == 0xFF ) {
if (aSig) {
@@ -2974,7 +2974,8 @@ int float32_eq_quiet(float32 a, float32 b, float_status *status)
if ( ( ( extractFloat32Exp( a ) == 0xFF ) && extractFloat32Frac( a ) )
|| ( ( extractFloat32Exp( b ) == 0xFF ) && extractFloat32Frac( b ) )
) {
- if ( float32_is_signaling_nan( a ) || float32_is_signaling_nan( b ) ) {
+ if (float32_is_signaling_nan(a, status)
+ || float32_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -3000,7 +3001,8 @@ int float32_le_quiet(float32 a, float32 b, float_status *status)
if ( ( ( extractFloat32Exp( a ) == 0xFF ) && extractFloat32Frac( a ) )
|| ( ( extractFloat32Exp( b ) == 0xFF ) && extractFloat32Frac( b ) )
) {
- if ( float32_is_signaling_nan( a ) || float32_is_signaling_nan( b ) ) {
+ if (float32_is_signaling_nan(a, status)
+ || float32_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -3031,7 +3033,8 @@ int float32_lt_quiet(float32 a, float32 b, float_status *status)
if ( ( ( extractFloat32Exp( a ) == 0xFF ) && extractFloat32Frac( a ) )
|| ( ( extractFloat32Exp( b ) == 0xFF ) && extractFloat32Frac( b ) )
) {
- if ( float32_is_signaling_nan( a ) || float32_is_signaling_nan( b ) ) {
+ if (float32_is_signaling_nan(a, status)
+ || float32_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -3060,7 +3063,8 @@ int float32_unordered_quiet(float32 a, float32 b, float_status *status)
if ( ( ( extractFloat32Exp( a ) == 0xFF ) && extractFloat32Frac( a ) )
|| ( ( extractFloat32Exp( b ) == 0xFF ) && extractFloat32Frac( b ) )
) {
- if ( float32_is_signaling_nan( a ) || float32_is_signaling_nan( b ) ) {
+ if (float32_is_signaling_nan(a, status)
+ || float32_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 1;
@@ -3896,7 +3900,7 @@ static float64 subFloat64Sigs(float64 a, float64 b, flag zSign,
return propagateFloat64NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
if ( aExp == 0 ) {
aExp = 1;
@@ -4023,7 +4027,7 @@ float64 float64_mul(float64 a, float64 b, float_status *status)
}
if ( ( bExp | bSig ) == 0 ) {
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
return packFloat64( zSign, 0x7FF, 0 );
}
@@ -4033,7 +4037,7 @@ float64 float64_mul(float64 a, float64 b, float_status *status)
}
if ( ( aExp | aSig ) == 0 ) {
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
return packFloat64( zSign, 0x7FF, 0 );
}
@@ -4090,7 +4094,7 @@ float64 float64_div(float64 a, float64 b, float_status *status)
return propagateFloat64NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
return packFloat64( zSign, 0x7FF, 0 );
}
@@ -4104,7 +4108,7 @@ float64 float64_div(float64 a, float64 b, float_status *status)
if ( bSig == 0 ) {
if ( ( aExp | aSig ) == 0 ) {
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
float_raise(float_flag_divbyzero, status);
return packFloat64( zSign, 0x7FF, 0 );
@@ -4162,7 +4166,7 @@ float64 float64_rem(float64 a, float64 b, float_status *status)
return propagateFloat64NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
if ( bExp == 0x7FF ) {
if (bSig) {
@@ -4173,7 +4177,7 @@ float64 float64_rem(float64 a, float64 b, float_status *status)
if ( bExp == 0 ) {
if ( bSig == 0 ) {
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
normalizeFloat64Subnormal( bSig, &bExp, &bSig );
}
@@ -4275,7 +4279,7 @@ float64 float64_muladd(float64 a, float64 b, float64 c, int flags,
if (infzero) {
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
if (flags & float_muladd_negate_c) {
@@ -4296,7 +4300,7 @@ float64 float64_muladd(float64 a, float64 b, float64 c, int flags,
if (pInf && (pSign ^ cSign)) {
/* addition of opposite-signed infinities => InvalidOperation */
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
/* Otherwise generate an infinity of the same sign */
return packFloat64(cSign ^ signflip, 0x7ff, 0);
@@ -4494,12 +4498,12 @@ float64 float64_sqrt(float64 a, float_status *status)
}
if ( ! aSign ) return a;
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
if ( aSign ) {
if ( ( aExp | aSig ) == 0 ) return a;
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
if ( aExp == 0 ) {
if ( aSig == 0 ) return float64_zero;
@@ -4547,7 +4551,7 @@ float64 float64_log2(float64 a, float_status *status)
}
if ( aSign ) {
float_raise(float_flag_invalid, status);
- return float64_default_nan;
+ return float64_default_nan(status);
}
if ( aExp == 0x7FF ) {
if (aSig) {
@@ -4694,7 +4698,8 @@ int float64_eq_quiet(float64 a, float64 b, float_status *status)
if ( ( ( extractFloat64Exp( a ) == 0x7FF ) && extractFloat64Frac( a ) )
|| ( ( extractFloat64Exp( b ) == 0x7FF ) && extractFloat64Frac( b ) )
) {
- if ( float64_is_signaling_nan( a ) || float64_is_signaling_nan( b ) ) {
+ if (float64_is_signaling_nan(a, status)
+ || float64_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -4722,7 +4727,8 @@ int float64_le_quiet(float64 a, float64 b, float_status *status)
if ( ( ( extractFloat64Exp( a ) == 0x7FF ) && extractFloat64Frac( a ) )
|| ( ( extractFloat64Exp( b ) == 0x7FF ) && extractFloat64Frac( b ) )
) {
- if ( float64_is_signaling_nan( a ) || float64_is_signaling_nan( b ) ) {
+ if (float64_is_signaling_nan(a, status)
+ || float64_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -4753,7 +4759,8 @@ int float64_lt_quiet(float64 a, float64 b, float_status *status)
if ( ( ( extractFloat64Exp( a ) == 0x7FF ) && extractFloat64Frac( a ) )
|| ( ( extractFloat64Exp( b ) == 0x7FF ) && extractFloat64Frac( b ) )
) {
- if ( float64_is_signaling_nan( a ) || float64_is_signaling_nan( b ) ) {
+ if (float64_is_signaling_nan(a, status)
+ || float64_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -4782,7 +4789,8 @@ int float64_unordered_quiet(float64 a, float64 b, float_status *status)
if ( ( ( extractFloat64Exp( a ) == 0x7FF ) && extractFloat64Frac( a ) )
|| ( ( extractFloat64Exp( b ) == 0x7FF ) && extractFloat64Frac( b ) )
) {
- if ( float64_is_signaling_nan( a ) || float64_is_signaling_nan( b ) ) {
+ if (float64_is_signaling_nan(a, status)
+ || float64_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 1;
@@ -5207,7 +5215,6 @@ static floatx80 subFloatx80Sigs(floatx80 a, floatx80 b, flag zSign,
int32_t aExp, bExp, zExp;
uint64_t aSig, bSig, zSig0, zSig1;
int32_t expDiff;
- floatx80 z;
aSig = extractFloatx80Frac( a );
aExp = extractFloatx80Exp( a );
@@ -5221,9 +5228,7 @@ static floatx80 subFloatx80Sigs(floatx80 a, floatx80 b, flag zSign,
return propagateFloatx80NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- z.low = floatx80_default_nan_low;
- z.high = floatx80_default_nan_high;
- return z;
+ return floatx80_default_nan(status);
}
if ( aExp == 0 ) {
aExp = 1;
@@ -5317,7 +5322,6 @@ floatx80 floatx80_mul(floatx80 a, floatx80 b, float_status *status)
flag aSign, bSign, zSign;
int32_t aExp, bExp, zExp;
uint64_t aSig, bSig, zSig0, zSig1;
- floatx80 z;
aSig = extractFloatx80Frac( a );
aExp = extractFloatx80Exp( a );
@@ -5341,9 +5345,7 @@ floatx80 floatx80_mul(floatx80 a, floatx80 b, float_status *status)
if ( ( aExp | aSig ) == 0 ) {
invalid:
float_raise(float_flag_invalid, status);
- z.low = floatx80_default_nan_low;
- z.high = floatx80_default_nan_high;
- return z;
+ return floatx80_default_nan(status);
}
return packFloatx80( zSign, 0x7FFF, LIT64( 0x8000000000000000 ) );
}
@@ -5377,7 +5379,6 @@ floatx80 floatx80_div(floatx80 a, floatx80 b, float_status *status)
int32_t aExp, bExp, zExp;
uint64_t aSig, bSig, zSig0, zSig1;
uint64_t rem0, rem1, rem2, term0, term1, term2;
- floatx80 z;
aSig = extractFloatx80Frac( a );
aExp = extractFloatx80Exp( a );
@@ -5409,9 +5410,7 @@ floatx80 floatx80_div(floatx80 a, floatx80 b, float_status *status)
if ( ( aExp | aSig ) == 0 ) {
invalid:
float_raise(float_flag_invalid, status);
- z.low = floatx80_default_nan_low;
- z.high = floatx80_default_nan_high;
- return z;
+ return floatx80_default_nan(status);
}
float_raise(float_flag_divbyzero, status);
return packFloatx80( zSign, 0x7FFF, LIT64( 0x8000000000000000 ) );
@@ -5461,7 +5460,6 @@ floatx80 floatx80_rem(floatx80 a, floatx80 b, float_status *status)
int32_t aExp, bExp, expDiff;
uint64_t aSig0, aSig1, bSig;
uint64_t q, term0, term1, alternateASig0, alternateASig1;
- floatx80 z;
aSig0 = extractFloatx80Frac( a );
aExp = extractFloatx80Exp( a );
@@ -5485,9 +5483,7 @@ floatx80 floatx80_rem(floatx80 a, floatx80 b, float_status *status)
if ( bSig == 0 ) {
invalid:
float_raise(float_flag_invalid, status);
- z.low = floatx80_default_nan_low;
- z.high = floatx80_default_nan_high;
- return z;
+ return floatx80_default_nan(status);
}
normalizeFloatx80Subnormal( bSig, &bExp, &bSig );
}
@@ -5559,7 +5555,6 @@ floatx80 floatx80_sqrt(floatx80 a, float_status *status)
int32_t aExp, zExp;
uint64_t aSig0, aSig1, zSig0, zSig1, doubleZSig0;
uint64_t rem0, rem1, rem2, rem3, term0, term1, term2, term3;
- floatx80 z;
aSig0 = extractFloatx80Frac( a );
aExp = extractFloatx80Exp( a );
@@ -5575,9 +5570,7 @@ floatx80 floatx80_sqrt(floatx80 a, float_status *status)
if ( ( aExp | aSig0 ) == 0 ) return a;
invalid:
float_raise(float_flag_invalid, status);
- z.low = floatx80_default_nan_low;
- z.high = floatx80_default_nan_high;
- return z;
+ return floatx80_default_nan(status);
}
if ( aExp == 0 ) {
if ( aSig0 == 0 ) return packFloatx80( 0, 0, 0 );
@@ -5745,8 +5738,8 @@ int floatx80_eq_quiet(floatx80 a, floatx80 b, float_status *status)
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
- if ( floatx80_is_signaling_nan( a )
- || floatx80_is_signaling_nan( b ) ) {
+ if (floatx80_is_signaling_nan(a, status)
+ || floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -5776,8 +5769,8 @@ int floatx80_le_quiet(floatx80 a, floatx80 b, float_status *status)
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
- if ( floatx80_is_signaling_nan( a )
- || floatx80_is_signaling_nan( b ) ) {
+ if (floatx80_is_signaling_nan(a, status)
+ || floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -5812,8 +5805,8 @@ int floatx80_lt_quiet(floatx80 a, floatx80 b, float_status *status)
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
- if ( floatx80_is_signaling_nan( a )
- || floatx80_is_signaling_nan( b ) ) {
+ if (floatx80_is_signaling_nan(a, status)
+ || floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -5845,8 +5838,8 @@ int floatx80_unordered_quiet(floatx80 a, floatx80 b, float_status *status)
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
- if ( floatx80_is_signaling_nan( a )
- || floatx80_is_signaling_nan( b ) ) {
+ if (floatx80_is_signaling_nan(a, status)
+ || floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 1;
@@ -6385,7 +6378,6 @@ static float128 subFloat128Sigs(float128 a, float128 b, flag zSign,
int32_t aExp, bExp, zExp;
uint64_t aSig0, aSig1, bSig0, bSig1, zSig0, zSig1;
int32_t expDiff;
- float128 z;
aSig1 = extractFloat128Frac1( a );
aSig0 = extractFloat128Frac0( a );
@@ -6403,9 +6395,7 @@ static float128 subFloat128Sigs(float128 a, float128 b, flag zSign,
return propagateFloat128NaN(a, b, status);
}
float_raise(float_flag_invalid, status);
- z.low = float128_default_nan_low;
- z.high = float128_default_nan_high;
- return z;
+ return float128_default_nan(status);
}
if ( aExp == 0 ) {
aExp = 1;
@@ -6515,7 +6505,6 @@ float128 float128_mul(float128 a, float128 b, float_status *status)
flag aSign, bSign, zSign;
int32_t aExp, bExp, zExp;
uint64_t aSig0, aSig1, bSig0, bSig1, zSig0, zSig1, zSig2, zSig3;
- float128 z;
aSig1 = extractFloat128Frac1( a );
aSig0 = extractFloat128Frac0( a );
@@ -6541,9 +6530,7 @@ float128 float128_mul(float128 a, float128 b, float_status *status)
if ( ( aExp | aSig0 | aSig1 ) == 0 ) {
invalid:
float_raise(float_flag_invalid, status);
- z.low = float128_default_nan_low;
- z.high = float128_default_nan_high;
- return z;
+ return float128_default_nan(status);
}
return packFloat128( zSign, 0x7FFF, 0, 0 );
}
@@ -6582,7 +6569,6 @@ float128 float128_div(float128 a, float128 b, float_status *status)
int32_t aExp, bExp, zExp;
uint64_t aSig0, aSig1, bSig0, bSig1, zSig0, zSig1, zSig2;
uint64_t rem0, rem1, rem2, rem3, term0, term1, term2, term3;
- float128 z;
aSig1 = extractFloat128Frac1( a );
aSig0 = extractFloat128Frac0( a );
@@ -6616,9 +6602,7 @@ float128 float128_div(float128 a, float128 b, float_status *status)
if ( ( aExp | aSig0 | aSig1 ) == 0 ) {
invalid:
float_raise(float_flag_invalid, status);
- z.low = float128_default_nan_low;
- z.high = float128_default_nan_high;
- return z;
+ return float128_default_nan(status);
}
float_raise(float_flag_divbyzero, status);
return packFloat128( zSign, 0x7FFF, 0, 0 );
@@ -6673,7 +6657,6 @@ float128 float128_rem(float128 a, float128 b, float_status *status)
uint64_t aSig0, aSig1, bSig0, bSig1, q, term0, term1, term2;
uint64_t allZero, alternateASig0, alternateASig1, sigMean1;
int64_t sigMean0;
- float128 z;
aSig1 = extractFloat128Frac1( a );
aSig0 = extractFloat128Frac0( a );
@@ -6699,9 +6682,7 @@ float128 float128_rem(float128 a, float128 b, float_status *status)
if ( ( bSig0 | bSig1 ) == 0 ) {
invalid:
float_raise(float_flag_invalid, status);
- z.low = float128_default_nan_low;
- z.high = float128_default_nan_high;
- return z;
+ return float128_default_nan(status);
}
normalizeFloat128Subnormal( bSig0, bSig1, &bExp, &bSig0, &bSig1 );
}
@@ -6782,7 +6763,6 @@ float128 float128_sqrt(float128 a, float_status *status)
int32_t aExp, zExp;
uint64_t aSig0, aSig1, zSig0, zSig1, zSig2, doubleZSig0;
uint64_t rem0, rem1, rem2, rem3, term0, term1, term2, term3;
- float128 z;
aSig1 = extractFloat128Frac1( a );
aSig0 = extractFloat128Frac0( a );
@@ -6799,9 +6779,7 @@ float128 float128_sqrt(float128 a, float_status *status)
if ( ( aExp | aSig0 | aSig1 ) == 0 ) return a;
invalid:
float_raise(float_flag_invalid, status);
- z.low = float128_default_nan_low;
- z.high = float128_default_nan_high;
- return z;
+ return float128_default_nan(status);
}
if ( aExp == 0 ) {
if ( ( aSig0 | aSig1 ) == 0 ) return packFloat128( 0, 0, 0, 0 );
@@ -6969,8 +6947,8 @@ int float128_eq_quiet(float128 a, float128 b, float_status *status)
|| ( ( extractFloat128Exp( b ) == 0x7FFF )
&& ( extractFloat128Frac0( b ) | extractFloat128Frac1( b ) ) )
) {
- if ( float128_is_signaling_nan( a )
- || float128_is_signaling_nan( b ) ) {
+ if (float128_is_signaling_nan(a, status)
+ || float128_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -7000,8 +6978,8 @@ int float128_le_quiet(float128 a, float128 b, float_status *status)
|| ( ( extractFloat128Exp( b ) == 0x7FFF )
&& ( extractFloat128Frac0( b ) | extractFloat128Frac1( b ) ) )
) {
- if ( float128_is_signaling_nan( a )
- || float128_is_signaling_nan( b ) ) {
+ if (float128_is_signaling_nan(a, status)
+ || float128_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -7036,8 +7014,8 @@ int float128_lt_quiet(float128 a, float128 b, float_status *status)
|| ( ( extractFloat128Exp( b ) == 0x7FFF )
&& ( extractFloat128Frac0( b ) | extractFloat128Frac1( b ) ) )
) {
- if ( float128_is_signaling_nan( a )
- || float128_is_signaling_nan( b ) ) {
+ if (float128_is_signaling_nan(a, status)
+ || float128_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
@@ -7070,8 +7048,8 @@ int float128_unordered_quiet(float128 a, float128 b, float_status *status)
|| ( ( extractFloat128Exp( b ) == 0x7FFF )
&& ( extractFloat128Frac0( b ) | extractFloat128Frac1( b ) ) )
) {
- if ( float128_is_signaling_nan( a )
- || float128_is_signaling_nan( b ) ) {
+ if (float128_is_signaling_nan(a, status)
+ || float128_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 1;
@@ -7351,8 +7329,8 @@ static inline int float ## s ## _compare_internal(float ## s a, float ## s b,\
( ( extractFloat ## s ## Exp( b ) == nan_exp ) && \
extractFloat ## s ## Frac( b ) )) { \
if (!is_quiet || \
- float ## s ## _is_signaling_nan( a ) || \
- float ## s ## _is_signaling_nan( b ) ) { \
+ float ## s ## _is_signaling_nan(a, status) || \
+ float ## s ## _is_signaling_nan(b, status)) { \
float_raise(float_flag_invalid, status); \
} \
return float_relation_unordered; \
@@ -7401,8 +7379,8 @@ static inline int floatx80_compare_internal(floatx80 a, floatx80 b,
( ( extractFloatx80Exp( b ) == 0x7fff ) &&
( extractFloatx80Frac( b )<<1 ) )) {
if (!is_quiet ||
- floatx80_is_signaling_nan( a ) ||
- floatx80_is_signaling_nan( b ) ) {
+ floatx80_is_signaling_nan(a, status) ||
+ floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return float_relation_unordered;
@@ -7447,8 +7425,8 @@ static inline int float128_compare_internal(float128 a, float128 b,
( ( extractFloat128Exp( b ) == 0x7fff ) &&
( extractFloat128Frac0( b ) | extractFloat128Frac1( b ) ) )) {
if (!is_quiet ||
- float128_is_signaling_nan( a ) ||
- float128_is_signaling_nan( b ) ) {
+ float128_is_signaling_nan(a, status) ||
+ float128_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return float_relation_unordered;
@@ -7508,11 +7486,11 @@ static inline float ## s float ## s ## _minmax(float ## s a, float ## s b, \
if (float ## s ## _is_any_nan(a) || \
float ## s ## _is_any_nan(b)) { \
if (isieee) { \
- if (float ## s ## _is_quiet_nan(a) && \
+ if (float ## s ## _is_quiet_nan(a, status) && \
!float ## s ##_is_any_nan(b)) { \
return b; \
- } else if (float ## s ## _is_quiet_nan(b) && \
- !float ## s ## _is_any_nan(a)) { \
+ } else if (float ## s ## _is_quiet_nan(b, status) && \
+ !float ## s ## _is_any_nan(a)) { \
return a; \
} \
} \
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index c937062..95a1103 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -205,6 +205,7 @@ typedef struct float_status {
/* should denormalised inputs go to zero and set the input_denormal flag? */
flag flush_inputs_to_zero;
flag default_nan_mode;
+ flag snan_bit_is_one;
} float_status;
static inline void set_float_detect_tininess(int val, float_status *status)
@@ -236,6 +237,10 @@ static inline void set_default_nan_mode(flag val, float_status *status)
{
status->default_nan_mode = val;
}
+static inline void set_snan_bit_is_one(flag val, float_status *status)
+{
+ status->snan_bit_is_one = val;
+}
static inline int get_float_detect_tininess(float_status *status)
{
return status->float_detect_tininess;
@@ -342,9 +347,9 @@ float64 float16_to_float64(float16 a, flag ieee, float_status *status);
/*----------------------------------------------------------------------------
| Software half-precision operations.
*----------------------------------------------------------------------------*/
-int float16_is_quiet_nan( float16 );
-int float16_is_signaling_nan( float16 );
-float16 float16_maybe_silence_nan( float16 );
+int float16_is_quiet_nan(float16, float_status *status);
+int float16_is_signaling_nan(float16, float_status *status);
+float16 float16_maybe_silence_nan(float16, float_status *status);
static inline int float16_is_any_nan(float16 a)
{
@@ -354,7 +359,7 @@ static inline int float16_is_any_nan(float16 a)
/*----------------------------------------------------------------------------
| The pattern for a default generated half-precision NaN.
*----------------------------------------------------------------------------*/
-extern const float16 float16_default_nan;
+float16 float16_default_nan(float_status *status);
/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision conversion routines.
@@ -404,9 +409,9 @@ float32 float32_minnum(float32, float32, float_status *status);
float32 float32_maxnum(float32, float32, float_status *status);
float32 float32_minnummag(float32, float32, float_status *status);
float32 float32_maxnummag(float32, float32, float_status *status);
-int float32_is_quiet_nan( float32 );
-int float32_is_signaling_nan( float32 );
-float32 float32_maybe_silence_nan( float32 );
+int float32_is_quiet_nan(float32, float_status *status);
+int float32_is_signaling_nan(float32, float_status *status);
+float32 float32_maybe_silence_nan(float32, float_status *status);
float32 float32_scalbn(float32, int, float_status *status);
static inline float32 float32_abs(float32 a)
@@ -466,7 +471,7 @@ static inline float32 float32_set_sign(float32 a, int sign)
/*----------------------------------------------------------------------------
| The pattern for a default generated single-precision NaN.
*----------------------------------------------------------------------------*/
-extern const float32 float32_default_nan;
+float32 float32_default_nan(float_status *status);
/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision conversion routines.
@@ -516,9 +521,9 @@ float64 float64_minnum(float64, float64, float_status *status);
float64 float64_maxnum(float64, float64, float_status *status);
float64 float64_minnummag(float64, float64, float_status *status);
float64 float64_maxnummag(float64, float64, float_status *status);
-int float64_is_quiet_nan( float64 a );
-int float64_is_signaling_nan( float64 );
-float64 float64_maybe_silence_nan( float64 );
+int float64_is_quiet_nan(float64 a, float_status *status);
+int float64_is_signaling_nan(float64, float_status *status);
+float64 float64_maybe_silence_nan(float64, float_status *status);
float64 float64_scalbn(float64, int, float_status *status);
static inline float64 float64_abs(float64 a)
@@ -578,7 +583,7 @@ static inline float64 float64_set_sign(float64 a, int sign)
/*----------------------------------------------------------------------------
| The pattern for a default generated double-precision NaN.
*----------------------------------------------------------------------------*/
-extern const float64 float64_default_nan;
+float64 float64_default_nan(float_status *status);
/*----------------------------------------------------------------------------
| Software IEC/IEEE extended double-precision conversion routines.
@@ -611,9 +616,9 @@ int floatx80_lt_quiet(floatx80, floatx80, float_status *status);
int floatx80_unordered_quiet(floatx80, floatx80, float_status *status);
int floatx80_compare(floatx80, floatx80, float_status *status);
int floatx80_compare_quiet(floatx80, floatx80, float_status *status);
-int floatx80_is_quiet_nan( floatx80 );
-int floatx80_is_signaling_nan( floatx80 );
-floatx80 floatx80_maybe_silence_nan( floatx80 );
+int floatx80_is_quiet_nan(floatx80, float_status *status);
+int floatx80_is_signaling_nan(floatx80, float_status *status);
+floatx80 floatx80_maybe_silence_nan(floatx80, float_status *status);
floatx80 floatx80_scalbn(floatx80, int, float_status *status);
static inline floatx80 floatx80_abs(floatx80 a)
@@ -663,7 +668,7 @@ static inline int floatx80_is_any_nan(floatx80 a)
/*----------------------------------------------------------------------------
| The pattern for a default generated extended double-precision NaN.
*----------------------------------------------------------------------------*/
-extern const floatx80 floatx80_default_nan;
+floatx80 floatx80_default_nan(float_status *status);
/*----------------------------------------------------------------------------
| Software IEC/IEEE quadruple-precision conversion routines.
@@ -696,9 +701,9 @@ int float128_lt_quiet(float128, float128, float_status *status);
int float128_unordered_quiet(float128, float128, float_status *status);
int float128_compare(float128, float128, float_status *status);
int float128_compare_quiet(float128, float128, float_status *status);
-int float128_is_quiet_nan( float128 );
-int float128_is_signaling_nan( float128 );
-float128 float128_maybe_silence_nan( float128 );
+int float128_is_quiet_nan(float128, float_status *status);
+int float128_is_signaling_nan(float128, float_status *status);
+float128 float128_maybe_silence_nan(float128, float_status *status);
float128 float128_scalbn(float128, int, float_status *status);
static inline float128 float128_abs(float128 a)
@@ -744,6 +749,6 @@ static inline int float128_is_any_nan(float128 a)
/*----------------------------------------------------------------------------
| The pattern for a default generated quadruple-precision NaN.
*----------------------------------------------------------------------------*/
-extern const float128 float128_default_nan;
+float128 float128_default_nan(float_status *status);
#endif /* !SOFTFLOAT_H */
diff --git a/target-arm/helper-a64.c b/target-arm/helper-a64.c
index c7bfb4d..50f0c8b 100644
--- a/target-arm/helper-a64.c
+++ b/target-arm/helper-a64.c
@@ -343,12 +343,12 @@ float32 HELPER(frecpx_f32)(float32 a, void *fpstp)
if (float32_is_any_nan(a)) {
float32 nan = a;
- if (float32_is_signaling_nan(a)) {
+ if (float32_is_signaling_nan(a, fpst)) {
float_raise(float_flag_invalid, fpst);
- nan = float32_maybe_silence_nan(a);
+ nan = float32_maybe_silence_nan(a, fpst);
}
if (fpst->default_nan_mode) {
- nan = float32_default_nan;
+ nan = float32_default_nan(fpst);
}
return nan;
}
@@ -372,12 +372,12 @@ float64 HELPER(frecpx_f64)(float64 a, void *fpstp)
if (float64_is_any_nan(a)) {
float64 nan = a;
- if (float64_is_signaling_nan(a)) {
+ if (float64_is_signaling_nan(a, fpst)) {
float_raise(float_flag_invalid, fpst);
- nan = float64_maybe_silence_nan(a);
+ nan = float64_maybe_silence_nan(a, fpst);
}
if (fpst->default_nan_mode) {
- nan = float64_default_nan;
+ nan = float64_default_nan(fpst);
}
return nan;
}
@@ -406,7 +406,7 @@ float32 HELPER(fcvtx_f64_to_f32)(float64 a, CPUARMState *env)
set_float_rounding_mode(float_round_to_zero, &tstat);
set_float_exception_flags(0, &tstat);
r = float64_to_float32(a, &tstat);
- r = float32_maybe_silence_nan(r);
+ r = float32_maybe_silence_nan(r, &tstat);
exflags = get_float_exception_flags(&tstat);
if (exflags & float_flag_inexact) {
r = make_float32(float32_val(r) | 1);
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 09638b2..6ef4450 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -8648,7 +8648,7 @@ float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env)
/* ARM requires that S<->D conversion of any kind of NaN generates
* a quiet NaN by forcing the most significant frac bit to 1.
*/
- return float64_maybe_silence_nan(r);
+ return float64_maybe_silence_nan(r, &env->vfp.fp_status);
}
float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env)
@@ -8657,7 +8657,7 @@ float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env)
/* ARM requires that S<->D conversion of any kind of NaN generates
* a quiet NaN by forcing the most significant frac bit to 1.
*/
- return float32_maybe_silence_nan(r);
+ return float32_maybe_silence_nan(r, &env->vfp.fp_status);
}
/* VFP3 fixed point conversion. */
@@ -8756,7 +8756,7 @@ static float32 do_fcvt_f16_to_f32(uint32_t a, CPUARMState *env, float_status *s)
int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
float32 r = float16_to_float32(make_float16(a), ieee, s);
if (ieee) {
- return float32_maybe_silence_nan(r);
+ return float32_maybe_silence_nan(r, s);
}
return r;
}
@@ -8766,7 +8766,7 @@ static uint32_t do_fcvt_f32_to_f16(float32 a, CPUARMState *env, float_status *s)
int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
float16 r = float32_to_float16(a, ieee, s);
if (ieee) {
- r = float16_maybe_silence_nan(r);
+ r = float16_maybe_silence_nan(r, s);
}
return float16_val(r);
}
@@ -8796,7 +8796,7 @@ float64 HELPER(vfp_fcvt_f16_to_f64)(uint32_t a, CPUARMState *env)
int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
float64 r = float16_to_float64(make_float16(a), ieee, &env->vfp.fp_status);
if (ieee) {
- return float64_maybe_silence_nan(r);
+ return float64_maybe_silence_nan(r, &env->vfp.fp_status);
}
return r;
}
@@ -8806,7 +8806,7 @@ uint32_t HELPER(vfp_fcvt_f64_to_f16)(float64 a, CPUARMState *env)
int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
float16 r = float64_to_float16(a, ieee, &env->vfp.fp_status);
if (ieee) {
- r = float16_maybe_silence_nan(r);
+ r = float16_maybe_silence_nan(r, &env->vfp.fp_status);
}
return float16_val(r);
}
@@ -8956,12 +8956,12 @@ float32 HELPER(recpe_f32)(float32 input, void *fpstp)
if (float32_is_any_nan(f32)) {
float32 nan = f32;
- if (float32_is_signaling_nan(f32)) {
+ if (float32_is_signaling_nan(f32, fpst)) {
float_raise(float_flag_invalid, fpst);
- nan = float32_maybe_silence_nan(f32);
+ nan = float32_maybe_silence_nan(f32, fpst);
}
if (fpst->default_nan_mode) {
- nan = float32_default_nan;
+ nan = float32_default_nan(fpst);
}
return nan;
} else if (float32_is_infinity(f32)) {
@@ -9010,12 +9010,12 @@ float64 HELPER(recpe_f64)(float64 input, void *fpstp)
/* Deal with any special cases */
if (float64_is_any_nan(f64)) {
float64 nan = f64;
- if (float64_is_signaling_nan(f64)) {
+ if (float64_is_signaling_nan(f64, fpst)) {
float_raise(float_flag_invalid, fpst);
- nan = float64_maybe_silence_nan(f64);
+ nan = float64_maybe_silence_nan(f64, fpst);
}
if (fpst->default_nan_mode) {
- nan = float64_default_nan;
+ nan = float64_default_nan(fpst);
}
return nan;
} else if (float64_is_infinity(f64)) {
@@ -9117,12 +9117,12 @@ float32 HELPER(rsqrte_f32)(float32 input, void *fpstp)
if (float32_is_any_nan(f32)) {
float32 nan = f32;
- if (float32_is_signaling_nan(f32)) {
+ if (float32_is_signaling_nan(f32, s)) {
float_raise(float_flag_invalid, s);
- nan = float32_maybe_silence_nan(f32);
+ nan = float32_maybe_silence_nan(f32, s);
}
if (s->default_nan_mode) {
- nan = float32_default_nan;
+ nan = float32_default_nan(s);
}
return nan;
} else if (float32_is_zero(f32)) {
@@ -9130,7 +9130,7 @@ float32 HELPER(rsqrte_f32)(float32 input, void *fpstp)
return float32_set_sign(float32_infinity, float32_is_neg(f32));
} else if (float32_is_neg(f32)) {
float_raise(float_flag_invalid, s);
- return float32_default_nan;
+ return float32_default_nan(s);
} else if (float32_is_infinity(f32)) {
return float32_zero;
}
@@ -9181,12 +9181,12 @@ float64 HELPER(rsqrte_f64)(float64 input, void *fpstp)
if (float64_is_any_nan(f64)) {
float64 nan = f64;
- if (float64_is_signaling_nan(f64)) {
+ if (float64_is_signaling_nan(f64, s)) {
float_raise(float_flag_invalid, s);
- nan = float64_maybe_silence_nan(f64);
+ nan = float64_maybe_silence_nan(f64, s);
}
if (s->default_nan_mode) {
- nan = float64_default_nan;
+ nan = float64_default_nan(s);
}
return nan;
} else if (float64_is_zero(f64)) {
@@ -9194,7 +9194,7 @@ float64 HELPER(rsqrte_f64)(float64 input, void *fpstp)
return float64_set_sign(float64_infinity, float64_is_neg(f64));
} else if (float64_is_neg(f64)) {
float_raise(float_flag_invalid, s);
- return float64_default_nan;
+ return float64_default_nan(s);
} else if (float64_is_infinity(f64)) {
return float64_zero;
}
diff --git a/target-m68k/helper.c b/target-m68k/helper.c
index a8f6d9d..4a1c623 100644
--- a/target-m68k/helper.c
+++ b/target-m68k/helper.c
@@ -557,10 +557,10 @@ float64 HELPER(sub_cmp_f64)(CPUM68KState *env, float64 a, float64 b)
/* ??? Should flush denormals to zero. */
float64 res;
res = float64_sub(a, b, &env->fp_status);
- if (float64_is_quiet_nan(res)) {
+ if (float64_is_quiet_nan(res, &env->fp_status)) {
/* +/-inf compares equal against itself, but sub returns nan. */
- if (!float64_is_quiet_nan(a)
- && !float64_is_quiet_nan(b)) {
+ if (!float64_is_quiet_nan(a, &env->fp_status)
+ && !float64_is_quiet_nan(b, &env->fp_status)) {
res = float64_zero;
if (float64_lt_quiet(a, res, &env->fp_status))
res = float64_chs(res);
diff --git a/target-microblaze/op_helper.c b/target-microblaze/op_helper.c
index 9733388..45fc94d 100644
--- a/target-microblaze/op_helper.c
+++ b/target-microblaze/op_helper.c
@@ -287,12 +287,14 @@ uint32_t helper_fcmp_un(CPUMBState *env, uint32_t a, uint32_t b)
fa.l = a;
fb.l = b;
- if (float32_is_signaling_nan(fa.f) || float32_is_signaling_nan(fb.f)) {
+ if (float32_is_signaling_nan(fa.f, &env->fp_status) ||
+ float32_is_signaling_nan(fb.f, &env->fp_status)) {
update_fpu_flags(env, float_flag_invalid);
r = 1;
}
- if (float32_is_quiet_nan(fa.f) || float32_is_quiet_nan(fb.f)) {
+ if (float32_is_quiet_nan(fa.f, &env->fp_status) ||
+ float32_is_quiet_nan(fb.f, &env->fp_status)) {
r = 1;
}
diff --git a/target-mips/cpu.h b/target-mips/cpu.h
index 866924d..6478420 100644
--- a/target-mips/cpu.h
+++ b/target-mips/cpu.h
@@ -789,6 +789,11 @@ void cpu_mips_soft_irq(CPUMIPSState *env, int irq, int level);
/* helper.c */
int mips_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
int mmu_idx);
+
+/* op_helper.c */
+uint32_t float_class_s(uint32_t arg, float_status *fst);
+uint64_t float_class_d(uint64_t arg, float_status *fst);
+
#if !defined(CONFIG_USER_ONLY)
void r4k_invalidate_tlb (CPUMIPSState *env, int idx, int use_extra);
hwaddr cpu_mips_translate_address (CPUMIPSState *env, target_ulong address,
diff --git a/target-mips/helper.h b/target-mips/helper.h
index 594341d..8546177 100644
--- a/target-mips/helper.h
+++ b/target-mips/helper.h
@@ -222,8 +222,8 @@ DEF_HELPER_2(float_cvtw_d, i32, env, i64)
DEF_HELPER_3(float_addr_ps, i64, env, i64, i64)
DEF_HELPER_3(float_mulr_ps, i64, env, i64, i64)
-DEF_HELPER_FLAGS_1(float_class_s, TCG_CALL_NO_RWG_SE, i32, i32)
-DEF_HELPER_FLAGS_1(float_class_d, TCG_CALL_NO_RWG_SE, i64, i64)
+DEF_HELPER_FLAGS_2(float_class_s, TCG_CALL_NO_RWG_SE, i32, env, i32)
+DEF_HELPER_FLAGS_2(float_class_d, TCG_CALL_NO_RWG_SE, i64, env, i64)
#define FOP_PROTO(op) \
DEF_HELPER_4(float_ ## op ## _s, i32, env, i32, i32, i32) \
diff --git a/target-mips/msa_helper.c b/target-mips/msa_helper.c
index 654a0d2..84923a1 100644
--- a/target-mips/msa_helper.c
+++ b/target-mips/msa_helper.c
@@ -1494,11 +1494,11 @@ MSA_UNOP_DF(pcnt)
#define FLOAT_ONE32 make_float32(0x3f8 << 20)
#define FLOAT_ONE64 make_float64(0x3ffULL << 52)
-#define FLOAT_SNAN16 (float16_default_nan ^ 0x0220)
+#define FLOAT_SNAN16(s) (float16_default_nan(s) ^ 0x0220)
/* 0x7c20 */
-#define FLOAT_SNAN32 (float32_default_nan ^ 0x00400020)
+#define FLOAT_SNAN32(s) (float32_default_nan(s) ^ 0x00400020)
/* 0x7f800020 */
-#define FLOAT_SNAN64 (float64_default_nan ^ 0x0008000000000020ULL)
+#define FLOAT_SNAN64(s) (float64_default_nan(s) ^ 0x0008000000000020ULL)
/* 0x7ff0000000000020 */
static inline void clear_msacsr_cause(CPUMIPSState *env)
@@ -1611,7 +1611,7 @@ static inline float16 float16_from_float32(int32_t a, flag ieee,
float16 f_val;
f_val = float32_to_float16((float32)a, ieee, status);
- f_val = float16_maybe_silence_nan(f_val);
+ f_val = float16_maybe_silence_nan(f_val, status);
return a < 0 ? (f_val | (1 << 15)) : f_val;
}
@@ -1621,7 +1621,7 @@ static inline float32 float32_from_float64(int64_t a, float_status *status)
float32 f_val;
f_val = float64_to_float32((float64)a, status);
- f_val = float32_maybe_silence_nan(f_val);
+ f_val = float32_maybe_silence_nan(f_val, status);
return a < 0 ? (f_val | (1 << 31)) : f_val;
}
@@ -1632,7 +1632,7 @@ static inline float32 float32_from_float16(int16_t a, flag ieee,
float32 f_val;
f_val = float16_to_float32((float16)a, ieee, status);
- f_val = float32_maybe_silence_nan(f_val);
+ f_val = float32_maybe_silence_nan(f_val, status);
return a < 0 ? (f_val | (1 << 31)) : f_val;
}
@@ -1642,7 +1642,7 @@ static inline float64 float64_from_float32(int32_t a, float_status *status)
float64 f_val;
f_val = float32_to_float64((float64)a, status);
- f_val = float64_maybe_silence_nan(f_val);
+ f_val = float64_maybe_silence_nan(f_val, status);
return a < 0 ? (f_val | (1ULL << 63)) : f_val;
}
@@ -1788,7 +1788,7 @@ static inline int32_t float64_to_q32(float64 a, float_status *status)
c = update_msacsr(env, CLEAR_IS_INEXACT, 0); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} \
} while (0)
@@ -2387,7 +2387,7 @@ void helper_msa_fsne_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
c = update_msacsr(env, 0, IS_DENORMAL(DEST, BITS)); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} \
} while (0)
@@ -2523,7 +2523,7 @@ void helper_msa_fdiv_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
c = update_msacsr(env, 0, IS_DENORMAL(DEST, BITS)); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} \
} while (0)
@@ -2642,7 +2642,7 @@ void helper_msa_fexp2_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
c = update_msacsr(env, 0, IS_DENORMAL(DEST, BITS)); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} \
} while (0)
@@ -2693,7 +2693,7 @@ void helper_msa_fexdo_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
c = update_msacsr(env, CLEAR_FS_UNDERFLOW, 0); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## XBITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## XBITS(status) >> 6) << 6) | c; \
} \
} while (0)
@@ -2730,9 +2730,9 @@ void helper_msa_ftq_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
msa_move_v(pwd, pwx);
}
-#define NUMBER_QNAN_PAIR(ARG1, ARG2, BITS) \
- !float ## BITS ## _is_any_nan(ARG1) \
- && float ## BITS ## _is_quiet_nan(ARG2)
+#define NUMBER_QNAN_PAIR(ARG1, ARG2, BITS, STATUS) \
+ !float ## BITS ## _is_any_nan(ARG1) \
+ && float ## BITS ## _is_quiet_nan(ARG2, STATUS)
#define MSA_FLOAT_MAXOP(DEST, OP, ARG1, ARG2, BITS) \
do { \
@@ -2744,18 +2744,18 @@ void helper_msa_ftq_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
c = update_msacsr(env, 0, 0); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} \
} while (0)
-#define FMAXMIN_A(F, G, X, _S, _T, BITS) \
+#define FMAXMIN_A(F, G, X, _S, _T, BITS, STATUS) \
do { \
uint## BITS ##_t S = _S, T = _T; \
uint## BITS ##_t as, at, xs, xt, xd; \
- if (NUMBER_QNAN_PAIR(S, T, BITS)) { \
+ if (NUMBER_QNAN_PAIR(S, T, BITS, STATUS)) { \
T = S; \
} \
- else if (NUMBER_QNAN_PAIR(T, S, BITS)) { \
+ else if (NUMBER_QNAN_PAIR(T, S, BITS, STATUS)) { \
S = T; \
} \
as = float## BITS ##_abs(S); \
@@ -2769,6 +2769,7 @@ void helper_msa_ftq_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
void helper_msa_fmin_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
uint32_t ws, uint32_t wt)
{
+ float_status *status = &env->active_tc.msa_fp_status;
wr_t wx, *pwx = &wx;
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
@@ -2780,9 +2781,9 @@ void helper_msa_fmin_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
- if (NUMBER_QNAN_PAIR(pws->w[i], pwt->w[i], 32)) {
+ if (NUMBER_QNAN_PAIR(pws->w[i], pwt->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], min, pws->w[i], pws->w[i], 32);
- } else if (NUMBER_QNAN_PAIR(pwt->w[i], pws->w[i], 32)) {
+ } else if (NUMBER_QNAN_PAIR(pwt->w[i], pws->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], min, pwt->w[i], pwt->w[i], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[i], min, pws->w[i], pwt->w[i], 32);
@@ -2791,9 +2792,9 @@ void helper_msa_fmin_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
- if (NUMBER_QNAN_PAIR(pws->d[i], pwt->d[i], 64)) {
+ if (NUMBER_QNAN_PAIR(pws->d[i], pwt->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], min, pws->d[i], pws->d[i], 64);
- } else if (NUMBER_QNAN_PAIR(pwt->d[i], pws->d[i], 64)) {
+ } else if (NUMBER_QNAN_PAIR(pwt->d[i], pws->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], min, pwt->d[i], pwt->d[i], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[i], min, pws->d[i], pwt->d[i], 64);
@@ -2812,6 +2813,7 @@ void helper_msa_fmin_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
void helper_msa_fmin_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
uint32_t ws, uint32_t wt)
{
+ float_status *status = &env->active_tc.msa_fp_status;
wr_t wx, *pwx = &wx;
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
@@ -2823,12 +2825,12 @@ void helper_msa_fmin_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
- FMAXMIN_A(min, max, pwx->w[i], pws->w[i], pwt->w[i], 32);
+ FMAXMIN_A(min, max, pwx->w[i], pws->w[i], pwt->w[i], 32, status);
}
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
- FMAXMIN_A(min, max, pwx->d[i], pws->d[i], pwt->d[i], 64);
+ FMAXMIN_A(min, max, pwx->d[i], pws->d[i], pwt->d[i], 64, status);
}
break;
default:
@@ -2843,6 +2845,7 @@ void helper_msa_fmin_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
void helper_msa_fmax_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
uint32_t ws, uint32_t wt)
{
+ float_status *status = &env->active_tc.msa_fp_status;
wr_t wx, *pwx = &wx;
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
@@ -2854,9 +2857,9 @@ void helper_msa_fmax_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
- if (NUMBER_QNAN_PAIR(pws->w[i], pwt->w[i], 32)) {
+ if (NUMBER_QNAN_PAIR(pws->w[i], pwt->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], max, pws->w[i], pws->w[i], 32);
- } else if (NUMBER_QNAN_PAIR(pwt->w[i], pws->w[i], 32)) {
+ } else if (NUMBER_QNAN_PAIR(pwt->w[i], pws->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], max, pwt->w[i], pwt->w[i], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[i], max, pws->w[i], pwt->w[i], 32);
@@ -2865,9 +2868,9 @@ void helper_msa_fmax_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
- if (NUMBER_QNAN_PAIR(pws->d[i], pwt->d[i], 64)) {
+ if (NUMBER_QNAN_PAIR(pws->d[i], pwt->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], max, pws->d[i], pws->d[i], 64);
- } else if (NUMBER_QNAN_PAIR(pwt->d[i], pws->d[i], 64)) {
+ } else if (NUMBER_QNAN_PAIR(pwt->d[i], pws->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], max, pwt->d[i], pwt->d[i], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[i], max, pws->d[i], pwt->d[i], 64);
@@ -2886,6 +2889,7 @@ void helper_msa_fmax_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
void helper_msa_fmax_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
uint32_t ws, uint32_t wt)
{
+ float_status *status = &env->active_tc.msa_fp_status;
wr_t wx, *pwx = &wx;
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
@@ -2897,12 +2901,12 @@ void helper_msa_fmax_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
- FMAXMIN_A(max, min, pwx->w[i], pws->w[i], pwt->w[i], 32);
+ FMAXMIN_A(max, min, pwx->w[i], pws->w[i], pwt->w[i], 32, status);
}
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
- FMAXMIN_A(max, min, pwx->d[i], pws->d[i], pwt->d[i], 64);
+ FMAXMIN_A(max, min, pwx->d[i], pws->d[i], pwt->d[i], 64, status);
}
break;
default:
@@ -2917,16 +2921,18 @@ void helper_msa_fmax_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
void helper_msa_fclass_df(CPUMIPSState *env, uint32_t df,
uint32_t wd, uint32_t ws)
{
+ float_status* status = &env->active_tc.msa_fp_status;
+
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
if (df == DF_WORD) {
- pwd->w[0] = helper_float_class_s(pws->w[0]);
- pwd->w[1] = helper_float_class_s(pws->w[1]);
- pwd->w[2] = helper_float_class_s(pws->w[2]);
- pwd->w[3] = helper_float_class_s(pws->w[3]);
+ pwd->w[0] = float_class_s(pws->w[0], status);
+ pwd->w[1] = float_class_s(pws->w[1], status);
+ pwd->w[2] = float_class_s(pws->w[2], status);
+ pwd->w[3] = float_class_s(pws->w[3], status);
} else {
- pwd->d[0] = helper_float_class_d(pws->d[0]);
- pwd->d[1] = helper_float_class_d(pws->d[1]);
+ pwd->d[0] = float_class_d(pws->d[0], status);
+ pwd->d[1] = float_class_d(pws->d[1], status);
}
}
@@ -2940,7 +2946,7 @@ void helper_msa_fclass_df(CPUMIPSState *env, uint32_t df,
c = update_msacsr(env, CLEAR_FS_UNDERFLOW, 0); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} else if (float ## BITS ## _is_any_nan(ARG)) { \
DEST = 0; \
} \
@@ -3044,12 +3050,12 @@ void helper_msa_fsqrt_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
set_float_exception_flags(0, status); \
DEST = float ## BITS ## _ ## div(FLOAT_ONE ## BITS, ARG, status); \
c = update_msacsr(env, float ## BITS ## _is_infinity(ARG) || \
- float ## BITS ## _is_quiet_nan(DEST) ? \
+ float ## BITS ## _is_quiet_nan(DEST, status) ? \
0 : RECIPROCAL_INEXACT, \
IS_DENORMAL(DEST, BITS)); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} \
} while (0)
@@ -3165,7 +3171,7 @@ void helper_msa_frint_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
c = update_msacsr(env, 0, IS_DENORMAL(DEST, BITS)); \
\
if (get_enabled_exceptions(env, c)) { \
- DEST = ((FLOAT_SNAN ## BITS >> 6) << 6) | c; \
+ DEST = ((FLOAT_SNAN ## BITS(status) >> 6) << 6) | c; \
} \
} while (0)
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 4417e6b..9e7e2e0 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -2660,7 +2660,7 @@ uint64_t helper_float_cvtd_s(CPUMIPSState *env, uint32_t fst0)
uint64_t fdt2;
fdt2 = float32_to_float64(fst0, &env->active_fpu.fp_status);
- fdt2 = float64_maybe_silence_nan(fdt2);
+ fdt2 = float64_maybe_silence_nan(fdt2, &env->active_fpu.fp_status);
update_fcr31(env, GETPC());
return fdt2;
}
@@ -2750,7 +2750,7 @@ uint32_t helper_float_cvts_d(CPUMIPSState *env, uint64_t fdt0)
uint32_t fst2;
fst2 = float64_to_float32(fdt0, &env->active_fpu.fp_status);
- fst2 = float32_maybe_silence_nan(fst2);
+ fst2 = float32_maybe_silence_nan(fst2, &env->active_fpu.fp_status);
update_fcr31(env, GETPC());
return fst2;
}
@@ -3200,11 +3200,12 @@ FLOAT_RINT(rint_d, 64)
#define FLOAT_CLASS_POSITIVE_ZERO 0x200
#define FLOAT_CLASS(name, bits) \
-uint ## bits ## _t helper_float_ ## name (uint ## bits ## _t arg) \
+uint ## bits ## _t float_ ## name (uint ## bits ## _t arg, \
+ float_status *status) \
{ \
- if (float ## bits ## _is_signaling_nan(arg)) { \
+ if (float ## bits ## _is_signaling_nan(arg, status)) { \
return FLOAT_CLASS_SIGNALING_NAN; \
- } else if (float ## bits ## _is_quiet_nan(arg)) { \
+ } else if (float ## bits ## _is_quiet_nan(arg, status)) { \
return FLOAT_CLASS_QUIET_NAN; \
} else if (float ## bits ## _is_neg(arg)) { \
if (float ## bits ## _is_infinity(arg)) { \
@@ -3227,8 +3228,15 @@ uint ## bits ## _t helper_float_ ## name (uint ## bits ## _t arg) \
return FLOAT_CLASS_POSITIVE_NORMAL; \
} \
} \
+} \
+uint ## bits ## _t helper_float_ ## name (CPUMIPSState *env, \
+ uint ## bits ## _t arg) \
+{ \
+ return float_ ## name(arg, &env->active_fpu.fp_status); \
}
+
+
FLOAT_CLASS(class_s, 32)
FLOAT_CLASS(class_d, 64)
#undef FLOAT_CLASS
diff --git a/target-mips/translate.c b/target-mips/translate.c
index a3a05ec..e934884 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -9110,7 +9110,7 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
{
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_class_s(fp0, fp0);
+ gen_helper_float_class_s(fp0, cpu_env, fp0);
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -9608,7 +9608,7 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
{
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_class_d(fp0, fp0);
+ gen_helper_float_class_d(fp0, cpu_env, fp0);
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -20129,6 +20129,7 @@ void cpu_state_reset(CPUMIPSState *env)
env->CP0_PageGrain = env->cpu_model->CP0_PageGrain;
env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0;
env->active_fpu.fcr31 = env->cpu_model->CP1_fcr31;
+ set_snan_bit_is_one(1, &env->active_fpu.fp_status);
env->msair = env->cpu_model->MSAIR;
env->insn_flags = env->cpu_model->insn_flags;
diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c
index 5af077d..e81a831 100644
--- a/target-mips/translate_init.c
+++ b/target-mips/translate_init.c
@@ -892,4 +892,6 @@ static void msa_reset(CPUMIPSState *env)
/* clear float_status nan mode */
set_default_nan_mode(0, &env->active_tc.msa_fp_status);
+
+ set_snan_bit_is_one(1, &env->active_tc.msa_fp_status);
}
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index b67ebca..48e9f40 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -73,7 +73,7 @@ void helper_compute_fprf(CPUPPCState *env, uint64_t arg)
farg.ll = arg;
isneg = float64_is_neg(farg.d);
if (unlikely(float64_is_any_nan(farg.d))) {
- if (float64_is_signaling_nan(farg.d)) {
+ if (float64_is_signaling_nan(farg.d, &env->fp_status)) {
/* Signaling NaN: flags are undefined */
fprf = 0x00;
} else {
@@ -534,8 +534,8 @@ uint64_t helper_fadd(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status))) {
/* sNaN addition */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -558,8 +558,8 @@ uint64_t helper_fsub(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status))) {
/* sNaN subtraction */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -582,8 +582,8 @@ uint64_t helper_fmul(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status))) {
/* sNaN multiplication */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -609,8 +609,8 @@ uint64_t helper_fdiv(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
/* Division of zero by zero */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXZDZ, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status))) {
/* sNaN division */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -632,7 +632,7 @@ uint64_t helper_##op(CPUPPCState *env, uint64_t arg) \
if (unlikely(env->fp_status.float_exception_flags)) { \
if (float64_is_any_nan(arg)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 1); \
- if (float64_is_signaling_nan(arg)) { \
+ if (float64_is_signaling_nan(arg, &env->fp_status)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1); \
} \
farg.ll = nanval; \
@@ -681,7 +681,7 @@ static inline uint64_t do_fri(CPUPPCState *env, uint64_t arg,
farg.ll = arg;
- if (unlikely(float64_is_signaling_nan(farg.d))) {
+ if (unlikely(float64_is_signaling_nan(farg.d, &env->fp_status))) {
/* sNaN round */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
farg.ll = arg | 0x0008000000000000ULL;
@@ -737,9 +737,9 @@ uint64_t helper_fmadd(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d) ||
- float64_is_signaling_nan(farg3.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg3.d, &env->fp_status))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -780,9 +780,9 @@ uint64_t helper_fmsub(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d) ||
- float64_is_signaling_nan(farg3.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg3.d, &env->fp_status))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -821,9 +821,9 @@ uint64_t helper_fnmadd(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d) ||
- float64_is_signaling_nan(farg3.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg3.d, &env->fp_status))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -866,9 +866,9 @@ uint64_t helper_fnmsub(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
- if (unlikely(float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d) ||
- float64_is_signaling_nan(farg3.d))) {
+ if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg3.d, &env->fp_status))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -903,7 +903,7 @@ uint64_t helper_frsp(CPUPPCState *env, uint64_t arg)
farg.ll = arg;
- if (unlikely(float64_is_signaling_nan(farg.d))) {
+ if (unlikely(float64_is_signaling_nan(farg.d, &env->fp_status))) {
/* sNaN square root */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -921,7 +921,7 @@ uint64_t helper_fsqrt(CPUPPCState *env, uint64_t arg)
farg.ll = arg;
if (unlikely(float64_is_any_nan(farg.d))) {
- if (unlikely(float64_is_signaling_nan(farg.d))) {
+ if (unlikely(float64_is_signaling_nan(farg.d, &env->fp_status))) {
/* sNaN reciprocal square root */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
farg.ll = float64_snan_to_qnan(farg.ll);
@@ -942,7 +942,7 @@ uint64_t helper_fre(CPUPPCState *env, uint64_t arg)
farg.ll = arg;
- if (unlikely(float64_is_signaling_nan(farg.d))) {
+ if (unlikely(float64_is_signaling_nan(farg.d, &env->fp_status))) {
/* sNaN reciprocal */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -958,7 +958,7 @@ uint64_t helper_fres(CPUPPCState *env, uint64_t arg)
farg.ll = arg;
- if (unlikely(float64_is_signaling_nan(farg.d))) {
+ if (unlikely(float64_is_signaling_nan(farg.d, &env->fp_status))) {
/* sNaN reciprocal */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -977,7 +977,7 @@ uint64_t helper_frsqrte(CPUPPCState *env, uint64_t arg)
farg.ll = arg;
if (unlikely(float64_is_any_nan(farg.d))) {
- if (unlikely(float64_is_signaling_nan(farg.d))) {
+ if (unlikely(float64_is_signaling_nan(farg.d, &env->fp_status))) {
/* sNaN reciprocal square root */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
farg.ll = float64_snan_to_qnan(farg.ll);
@@ -1100,8 +1100,8 @@ void helper_fcmpu(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
env->fpscr |= ret << FPSCR_FPRF;
env->crf[crfD] = ret;
if (unlikely(ret == 0x01UL
- && (float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d)))) {
+ && (float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status)))) {
/* sNaN comparison */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
@@ -1131,8 +1131,8 @@ void helper_fcmpo(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
env->fpscr |= ret << FPSCR_FPRF;
env->crf[crfD] = ret;
if (unlikely(ret == 0x01UL)) {
- if (float64_is_signaling_nan(farg1.d) ||
- float64_is_signaling_nan(farg2.d)) {
+ if (float64_is_signaling_nan(farg1.d, &env->fp_status) ||
+ float64_is_signaling_nan(farg2.d, &env->fp_status)) {
/* sNaN comparison */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXVC, 1);
@@ -1168,7 +1168,7 @@ static inline int32_t efsctsi(CPUPPCState *env, uint32_t val)
u.l = val;
/* NaN are not treated the same way IEEE 754 does */
- if (unlikely(float32_is_quiet_nan(u.f))) {
+ if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
return 0;
}
@@ -1181,7 +1181,7 @@ static inline uint32_t efsctui(CPUPPCState *env, uint32_t val)
u.l = val;
/* NaN are not treated the same way IEEE 754 does */
- if (unlikely(float32_is_quiet_nan(u.f))) {
+ if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
return 0;
}
@@ -1194,7 +1194,7 @@ static inline uint32_t efsctsiz(CPUPPCState *env, uint32_t val)
u.l = val;
/* NaN are not treated the same way IEEE 754 does */
- if (unlikely(float32_is_quiet_nan(u.f))) {
+ if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
return 0;
}
@@ -1207,7 +1207,7 @@ static inline uint32_t efsctuiz(CPUPPCState *env, uint32_t val)
u.l = val;
/* NaN are not treated the same way IEEE 754 does */
- if (unlikely(float32_is_quiet_nan(u.f))) {
+ if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
return 0;
}
@@ -1245,7 +1245,7 @@ static inline uint32_t efsctsf(CPUPPCState *env, uint32_t val)
u.l = val;
/* NaN are not treated the same way IEEE 754 does */
- if (unlikely(float32_is_quiet_nan(u.f))) {
+ if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
return 0;
}
tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
@@ -1261,7 +1261,7 @@ static inline uint32_t efsctuf(CPUPPCState *env, uint32_t val)
u.l = val;
/* NaN are not treated the same way IEEE 754 does */
- if (unlikely(float32_is_quiet_nan(u.f))) {
+ if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
return 0;
}
tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
@@ -1839,8 +1839,8 @@ void helper_##name(CPUPPCState *env, uint32_t opcode) \
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_infinity(xa.fld) && tp##_is_infinity(xb.fld)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, sfprf); \
- } else if (tp##_is_signaling_nan(xa.fld) || \
- tp##_is_signaling_nan(xb.fld)) { \
+ } else if (tp##_is_signaling_nan(xa.fld, &tstat) || \
+ tp##_is_signaling_nan(xb.fld, &tstat)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
@@ -1894,8 +1894,8 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
if ((tp##_is_infinity(xa.fld) && tp##_is_zero(xb.fld)) || \
(tp##_is_infinity(xb.fld) && tp##_is_zero(xa.fld))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, sfprf); \
- } else if (tp##_is_signaling_nan(xa.fld) || \
- tp##_is_signaling_nan(xb.fld)) { \
+ } else if (tp##_is_signaling_nan(xa.fld, &tstat) || \
+ tp##_is_signaling_nan(xb.fld, &tstat)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
@@ -1948,8 +1948,8 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
} else if (tp##_is_zero(xa.fld) && \
tp##_is_zero(xb.fld)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXZDZ, sfprf); \
- } else if (tp##_is_signaling_nan(xa.fld) || \
- tp##_is_signaling_nan(xb.fld)) { \
+ } else if (tp##_is_signaling_nan(xa.fld, &tstat) || \
+ tp##_is_signaling_nan(xb.fld, &tstat)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
@@ -1990,7 +1990,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
- if (unlikely(tp##_is_signaling_nan(xb.fld))) { \
+ if (unlikely(tp##_is_signaling_nan(xb.fld, &env->fp_status))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
xt.fld = tp##_div(tp##_one, xb.fld, &env->fp_status); \
@@ -2039,7 +2039,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_neg(xb.fld) && !tp##_is_zero(xb.fld)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, sfprf); \
- } else if (tp##_is_signaling_nan(xb.fld)) { \
+ } else if (tp##_is_signaling_nan(xb.fld, &tstat)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
@@ -2089,7 +2089,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_neg(xb.fld) && !tp##_is_zero(xb.fld)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, sfprf); \
- } else if (tp##_is_signaling_nan(xb.fld)) { \
+ } else if (tp##_is_signaling_nan(xb.fld, &tstat)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
@@ -2274,9 +2274,9 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
- if (tp##_is_signaling_nan(xa.fld) || \
- tp##_is_signaling_nan(b->fld) || \
- tp##_is_signaling_nan(c->fld)) { \
+ if (tp##_is_signaling_nan(xa.fld, &tstat) || \
+ tp##_is_signaling_nan(b->fld, &tstat) || \
+ tp##_is_signaling_nan(c->fld, &tstat)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
tstat.float_exception_flags &= ~float_flag_invalid; \
} \
@@ -2358,8 +2358,8 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
\
if (unlikely(float64_is_any_nan(xa.VsrD(0)) || \
float64_is_any_nan(xb.VsrD(0)))) { \
- if (float64_is_signaling_nan(xa.VsrD(0)) || \
- float64_is_signaling_nan(xb.VsrD(0))) { \
+ if (float64_is_signaling_nan(xa.VsrD(0), &env->fp_status) || \
+ float64_is_signaling_nan(xb.VsrD(0), &env->fp_status)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
if (ordered) { \
@@ -2406,8 +2406,8 @@ void helper_##name(CPUPPCState *env, uint32_t opcode) \
\
for (i = 0; i < nels; i++) { \
xt.fld = tp##_##op(xa.fld, xb.fld, &env->fp_status); \
- if (unlikely(tp##_is_signaling_nan(xa.fld) || \
- tp##_is_signaling_nan(xb.fld))) { \
+ if (unlikely(tp##_is_signaling_nan(xa.fld, &env->fp_status) || \
+ tp##_is_signaling_nan(xb.fld, &env->fp_status))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
} \
@@ -2446,8 +2446,8 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
for (i = 0; i < nels; i++) { \
if (unlikely(tp##_is_any_nan(xa.fld) || \
tp##_is_any_nan(xb.fld))) { \
- if (tp##_is_signaling_nan(xa.fld) || \
- tp##_is_signaling_nan(xb.fld)) { \
+ if (tp##_is_signaling_nan(xa.fld, &env->fp_status) || \
+ tp##_is_signaling_nan(xb.fld, &env->fp_status)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
if (svxvc) { \
@@ -2500,7 +2500,8 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
\
for (i = 0; i < nels; i++) { \
xt.tfld = stp##_to_##ttp(xb.sfld, &env->fp_status); \
- if (unlikely(stp##_is_signaling_nan(xb.sfld))) { \
+ if (unlikely(stp##_is_signaling_nan(xb.sfld, \
+ &env->fp_status))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
xt.tfld = ttp##_snan_to_qnan(xt.tfld); \
} \
@@ -2555,7 +2556,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
\
for (i = 0; i < nels; i++) { \
if (unlikely(stp##_is_any_nan(xb.sfld))) { \
- if (stp##_is_signaling_nan(xb.sfld)) { \
+ if (stp##_is_signaling_nan(xb.sfld, &env->fp_status)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 0); \
@@ -2664,7 +2665,8 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
} \
\
for (i = 0; i < nels; i++) { \
- if (unlikely(tp##_is_signaling_nan(xb.fld))) { \
+ if (unlikely(tp##_is_signaling_nan(xb.fld, \
+ &env->fp_status))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
xt.fld = tp##_snan_to_qnan(xb.fld); \
} else { \
diff --git a/target-s390x/fpu_helper.c b/target-s390x/fpu_helper.c
index 1c7f673..d527c98 100644
--- a/target-s390x/fpu_helper.c
+++ b/target-s390x/fpu_helper.c
@@ -266,7 +266,7 @@ uint64_t HELPER(ldeb)(CPUS390XState *env, uint64_t f2)
{
float64 ret = float32_to_float64(f2, &env->fpu_status);
handle_exceptions(env, GETPC());
- return float64_maybe_silence_nan(ret);
+ return float64_maybe_silence_nan(ret, &env->fpu_status);
}
/* convert 128-bit float to 64-bit float */
@@ -274,7 +274,7 @@ uint64_t HELPER(ldxb)(CPUS390XState *env, uint64_t ah, uint64_t al)
{
float64 ret = float128_to_float64(make_float128(ah, al), &env->fpu_status);
handle_exceptions(env, GETPC());
- return float64_maybe_silence_nan(ret);
+ return float64_maybe_silence_nan(ret, &env->fpu_status);
}
/* convert 64-bit float to 128-bit float */
@@ -282,7 +282,7 @@ uint64_t HELPER(lxdb)(CPUS390XState *env, uint64_t f2)
{
float128 ret = float64_to_float128(f2, &env->fpu_status);
handle_exceptions(env, GETPC());
- return RET128(float128_maybe_silence_nan(ret));
+ return RET128(float128_maybe_silence_nan(ret, &env->fpu_status));
}
/* convert 32-bit float to 128-bit float */
@@ -290,7 +290,7 @@ uint64_t HELPER(lxeb)(CPUS390XState *env, uint64_t f2)
{
float128 ret = float32_to_float128(f2, &env->fpu_status);
handle_exceptions(env, GETPC());
- return RET128(float128_maybe_silence_nan(ret));
+ return RET128(float128_maybe_silence_nan(ret, &env->fpu_status));
}
/* convert 64-bit float to 32-bit float */
@@ -298,7 +298,7 @@ uint64_t HELPER(ledb)(CPUS390XState *env, uint64_t f2)
{
float32 ret = float64_to_float32(f2, &env->fpu_status);
handle_exceptions(env, GETPC());
- return float32_maybe_silence_nan(ret);
+ return float32_maybe_silence_nan(ret, &env->fpu_status);
}
/* convert 128-bit float to 32-bit float */
@@ -306,7 +306,7 @@ uint64_t HELPER(lexb)(CPUS390XState *env, uint64_t ah, uint64_t al)
{
float32 ret = float128_to_float32(make_float128(ah, al), &env->fpu_status);
handle_exceptions(env, GETPC());
- return float32_maybe_silence_nan(ret);
+ return float32_maybe_silence_nan(ret, &env->fpu_status);
}
/* 32-bit FP compare */
@@ -623,7 +623,7 @@ uint64_t HELPER(msdb)(CPUS390XState *env, uint64_t f1,
}
/* test data class 32-bit */
-uint32_t HELPER(tceb)(uint64_t f1, uint64_t m2)
+uint32_t HELPER(tceb)(CPUS390XState *env, uint64_t f1, uint64_t m2)
{
float32 v1 = f1;
int neg = float32_is_neg(v1);
@@ -632,7 +632,8 @@ uint32_t HELPER(tceb)(uint64_t f1, uint64_t m2)
if ((float32_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
(float32_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
(float32_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
- (float32_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
+ (float32_is_signaling_nan(v1, &env->fpu_status) &&
+ (m2 & (1 << (1-neg))))) {
cc = 1;
} else if (m2 & (1 << (9-neg))) {
/* assume normalized number */
@@ -643,7 +644,7 @@ uint32_t HELPER(tceb)(uint64_t f1, uint64_t m2)
}
/* test data class 64-bit */
-uint32_t HELPER(tcdb)(uint64_t v1, uint64_t m2)
+uint32_t HELPER(tcdb)(CPUS390XState *env, uint64_t v1, uint64_t m2)
{
int neg = float64_is_neg(v1);
uint32_t cc = 0;
@@ -651,7 +652,8 @@ uint32_t HELPER(tcdb)(uint64_t v1, uint64_t m2)
if ((float64_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
(float64_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
(float64_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
- (float64_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
+ (float64_is_signaling_nan(v1, &env->fpu_status) &&
+ (m2 & (1 << (1-neg))))) {
cc = 1;
} else if (m2 & (1 << (9-neg))) {
/* assume normalized number */
@@ -662,7 +664,8 @@ uint32_t HELPER(tcdb)(uint64_t v1, uint64_t m2)
}
/* test data class 128-bit */
-uint32_t HELPER(tcxb)(uint64_t ah, uint64_t al, uint64_t m2)
+uint32_t HELPER(tcxb)(CPUS390XState *env, uint64_t ah,
+ uint64_t al, uint64_t m2)
{
float128 v1 = make_float128(ah, al);
int neg = float128_is_neg(v1);
@@ -671,7 +674,8 @@ uint32_t HELPER(tcxb)(uint64_t ah, uint64_t al, uint64_t m2)
if ((float128_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
(float128_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
(float128_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
- (float128_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
+ (float128_is_signaling_nan(v1, &env->fpu_status) &&
+ (m2 & (1 << (1-neg))))) {
cc = 1;
} else if (m2 & (1 << (9-neg))) {
/* assume normalized number */
diff --git a/target-s390x/helper.h b/target-s390x/helper.h
index 7e06119..207a6e7 100644
--- a/target-s390x/helper.h
+++ b/target-s390x/helper.h
@@ -67,9 +67,9 @@ DEF_HELPER_FLAGS_4(maeb, TCG_CALL_NO_WG, i64, env, i64, i64, i64)
DEF_HELPER_FLAGS_4(madb, TCG_CALL_NO_WG, i64, env, i64, i64, i64)
DEF_HELPER_FLAGS_4(mseb, TCG_CALL_NO_WG, i64, env, i64, i64, i64)
DEF_HELPER_FLAGS_4(msdb, TCG_CALL_NO_WG, i64, env, i64, i64, i64)
-DEF_HELPER_FLAGS_2(tceb, TCG_CALL_NO_RWG_SE, i32, i64, i64)
-DEF_HELPER_FLAGS_2(tcdb, TCG_CALL_NO_RWG_SE, i32, i64, i64)
-DEF_HELPER_FLAGS_3(tcxb, TCG_CALL_NO_RWG_SE, i32, i64, i64, i64)
+DEF_HELPER_FLAGS_3(tceb, TCG_CALL_NO_RWG_SE, i32, env, i64, i64)
+DEF_HELPER_FLAGS_3(tcdb, TCG_CALL_NO_RWG_SE, i32, env, i64, i64)
+DEF_HELPER_FLAGS_4(tcxb, TCG_CALL_NO_RWG_SE, i32, env, i64, i64, i64)
DEF_HELPER_FLAGS_1(clz, TCG_CALL_NO_RWG_SE, i64, i64)
DEF_HELPER_FLAGS_2(sqeb, TCG_CALL_NO_WG, i64, env, i64)
DEF_HELPER_FLAGS_2(sqdb, TCG_CALL_NO_WG, i64, env, i64)
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index c871ef2..1dadcd7 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -3979,21 +3979,21 @@ static ExitStatus op_svc(DisasContext *s, DisasOps *o)
static ExitStatus op_tceb(DisasContext *s, DisasOps *o)
{
- gen_helper_tceb(cc_op, o->in1, o->in2);
+ gen_helper_tceb(cc_op, cpu_env, o->in1, o->in2);
set_cc_static(s);
return NO_EXIT;
}
static ExitStatus op_tcdb(DisasContext *s, DisasOps *o)
{
- gen_helper_tcdb(cc_op, o->in1, o->in2);
+ gen_helper_tcdb(cc_op, cpu_env, o->in1, o->in2);
set_cc_static(s);
return NO_EXIT;
}
static ExitStatus op_tcxb(DisasContext *s, DisasOps *o)
{
- gen_helper_tcxb(cc_op, o->out, o->out2, o->in2);
+ gen_helper_tcxb(cc_op, cpu_env, o->out, o->out2, o->in2);
set_cc_static(s);
return NO_EXIT;
}
diff --git a/target-sh4/cpu.c b/target-sh4/cpu.c
index 86ba388..60039ac 100644
--- a/target-sh4/cpu.c
+++ b/target-sh4/cpu.c
@@ -70,6 +70,7 @@ static void superh_cpu_reset(CPUState *s)
set_flush_to_zero(1, &env->fp_status);
#endif
set_default_nan_mode(1, &env->fp_status);
+ set_snan_bit_is_one(1, &env->fp_status);
}
static void superh_cpu_disas_set_info(CPUState *cpu, disassemble_info *info)
diff --git a/target-unicore32/cpu.c b/target-unicore32/cpu.c
index 66f43ac..1138687 100644
--- a/target-unicore32/cpu.c
+++ b/target-unicore32/cpu.c
@@ -77,6 +77,7 @@ static void unicore_ii_cpu_initfn(Object *obj)
set_feature(env, UC32_HWCAP_CMOV);
set_feature(env, UC32_HWCAP_UCF64);
+ set_snan_bit_is_one(1, &env->ucf64.fp_status);
}
static void uc32_any_cpu_initfn(Object *obj)
@@ -89,6 +90,7 @@ static void uc32_any_cpu_initfn(Object *obj)
set_feature(env, UC32_HWCAP_CMOV);
set_feature(env, UC32_HWCAP_UCF64);
+ set_snan_bit_is_one(1, &env->ucf64.fp_status);
}
static const UniCore32CPUInfo uc32_cpus[] = {
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 2/9] softfloat: Clean code format in fpu/softfloat-specialize.h
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 1/9] softfloat: Implement run-time-configurable meaning of signaling NaN bit Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 3/9] softfloat: For Mips only, correct default NaN values Aleksandar Markovic
` (7 subsequent siblings)
9 siblings, 0 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
fpu/softfloat-specialize.h is the most critical file in SoftFloat
library, since it handles numerous differences between platforms in
relation to floating point arithmetics. This patch makes the code
in this file more consistent format-wise, and hopefully easier to
debug and maintain.
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
fpu/softfloat-specialize.h | 99 +++++++++++++++++++++++-----------------------
1 file changed, 50 insertions(+), 49 deletions(-)
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index 4411d3c..e03a529 100644
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -273,7 +273,7 @@ static commonNaNT float16ToCommonNaN(float16 a, float_status *status)
}
z.sign = float16_val(a) >> 15;
z.low = 0;
- z.high = ((uint64_t) float16_val(a))<<54;
+ z.high = ((uint64_t) float16_val(a)) << 54;
return z;
}
@@ -284,7 +284,7 @@ static commonNaNT float16ToCommonNaN(float16 a, float_status *status)
static float16 commonNaNToFloat16(commonNaNT a, float_status *status)
{
- uint16_t mantissa = a.high>>54;
+ uint16_t mantissa = a.high >> 54;
if (status->default_nan_mode) {
return float16_default_nan(status);
@@ -372,9 +372,9 @@ static commonNaNT float32ToCommonNaN(float32 a, float_status *status)
if (float32_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
- z.sign = float32_val(a)>>31;
+ z.sign = float32_val(a) >> 31;
z.low = 0;
- z.high = ( (uint64_t) float32_val(a) )<<41;
+ z.high = ((uint64_t)float32_val(a)) << 41;
return z;
}
@@ -385,17 +385,18 @@ static commonNaNT float32ToCommonNaN(float32 a, float_status *status)
static float32 commonNaNToFloat32(commonNaNT a, float_status *status)
{
- uint32_t mantissa = a.high>>41;
+ uint32_t mantissa = a.high >> 41;
if (status->default_nan_mode) {
return float32_default_nan(status);
}
- if ( mantissa )
+ if (mantissa) {
return make_float32(
- ( ( (uint32_t) a.sign )<<31 ) | 0x7F800000 | ( a.high>>41 ) );
- else
- return float32_default_nan;
+ (((uint32_t)a.sign) << 31) | 0x7F800000 | (a.high >> 41));
+ } else {
+ return float32_default_nan(status);
+ }
}
/*----------------------------------------------------------------------------
@@ -497,11 +498,10 @@ static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN,
return aIsLargerSignificand ? 0 : 1;
}
return bIsQNaN ? 1 : 0;
- }
- else if (aIsQNaN) {
- if (bIsSNaN || !bIsQNaN)
+ } else if (aIsQNaN) {
+ if (bIsSNaN || !bIsQNaN) {
return 0;
- else {
+ } else {
return aIsLargerSignificand ? 0 : 1;
}
} else {
@@ -644,9 +644,9 @@ static float32 propagateFloat32NaN(float32 a, float32 b, float_status *status)
return float32_default_nan(status);
}
- if ((uint32_t)(av<<1) < (uint32_t)(bv<<1)) {
+ if ((uint32_t)(av << 1) < (uint32_t)(bv << 1)) {
aIsLargerSignificand = 0;
- } else if ((uint32_t)(bv<<1) < (uint32_t)(av<<1)) {
+ } else if ((uint32_t)(bv << 1) < (uint32_t)(av << 1)) {
aIsLargerSignificand = 1;
} else {
aIsLargerSignificand = (av < bv) ? 1 : 0;
@@ -789,9 +789,9 @@ static commonNaNT float64ToCommonNaN(float64 a, float_status *status)
if (float64_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
- z.sign = float64_val(a)>>63;
+ z.sign = float64_val(a) >> 63;
z.low = 0;
- z.high = float64_val(a)<<12;
+ z.high = float64_val(a) << 12;
return z;
}
@@ -808,13 +808,14 @@ static float64 commonNaNToFloat64(commonNaNT a, float_status *status)
return float64_default_nan(status);
}
- if ( mantissa )
+ if (mantissa) {
return make_float64(
- ( ( (uint64_t) a.sign )<<63 )
- | LIT64( 0x7FF0000000000000 )
- | ( a.high>>12 ));
- else
- return float64_default_nan;
+ (((uint64_t) a.sign) << 63)
+ | LIT64(0x7FF0000000000000)
+ | (a.high >> 12));
+ } else {
+ return float64_default_nan(status);
+ }
}
/*----------------------------------------------------------------------------
@@ -844,9 +845,9 @@ static float64 propagateFloat64NaN(float64 a, float64 b, float_status *status)
return float64_default_nan(status);
}
- if ((uint64_t)(av<<1) < (uint64_t)(bv<<1)) {
+ if ((uint64_t)(av << 1) < (uint64_t)(bv << 1)) {
aIsLargerSignificand = 0;
- } else if ((uint64_t)(bv<<1) < (uint64_t)(av<<1)) {
+ } else if ((uint64_t)(bv << 1) < (uint64_t)(av << 1)) {
aIsLargerSignificand = 1;
} else {
aIsLargerSignificand = (av < bv) ? 1 : 0;
@@ -935,12 +936,12 @@ int floatx80_is_quiet_nan(floatx80 a, float_status *status)
uint64_t aLow;
aLow = a.low & ~0x4000000000000000ULL;
- return ((a.high & 0x7fff) == 0x7fff)
+ return ((a.high & 0x7FFF) == 0x7FFF)
&& (aLow << 1)
&& (a.low == aLow);
} else {
- return ( ( a.high & 0x7FFF ) == 0x7FFF )
- && (LIT64( 0x8000000000000000 ) <= ((uint64_t) ( a.low<<1 )));
+ return ((a.high & 0x7FFF) == 0x7FFF)
+ && (LIT64(0x8000000000000000) <= ((uint64_t)(a.low << 1)));
}
}
@@ -958,11 +959,11 @@ int floatx80_is_signaling_nan(floatx80 a, float_status *status)
} else {
uint64_t aLow;
- aLow = a.low & ~ LIT64( 0x4000000000000000 );
+ aLow = a.low & ~LIT64(0x4000000000000000);
return
- ( ( a.high & 0x7FFF ) == 0x7FFF )
- && (uint64_t) ( aLow<<1 )
- && ( a.low == aLow );
+ ((a.high & 0x7FFF) == 0x7FFF)
+ && (uint64_t) (aLow << 1)
+ && (a.low == aLow);
}
}
#endif
@@ -999,7 +1000,7 @@ static commonNaNT floatx80ToCommonNaN(floatx80 a, float_status *status)
if (floatx80_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
- if ( a.low >> 63 ) {
+ if (a.low >> 63) {
z.sign = a.high >> 15;
z.low = 0;
z.high = a.low << 1;
@@ -1026,8 +1027,8 @@ static floatx80 commonNaNToFloatx80(commonNaNT a, float_status *status)
}
if (a.high >> 1) {
- z.low = LIT64( 0x8000000000000000 ) | a.high >> 1;
- z.high = ( ( (uint16_t) a.sign )<<15 ) | 0x7FFF;
+ z.low = LIT64(0x8000000000000000) | a.high >> 1;
+ z.high = (((uint16_t)a.sign) << 15) | 0x7FFF;
} else {
z = floatx80_default_nan(status);
}
@@ -1094,12 +1095,12 @@ int float128_is_signaling_nan(float128 a_, float_status *status)
int float128_is_quiet_nan(float128 a, float_status *status)
{
if (status->snan_bit_is_one) {
- return (((a.high >> 47) & 0xffff) == 0xfffe)
- && (a.low || (a.high & 0x00007fffffffffffULL));
+ return (((a.high >> 47) & 0xFFFF) == 0xFFFE)
+ && (a.low || (a.high & 0x00007FFFFFFFFFFFULL));
} else {
return
- ((a.high << 1) >= 0xffff000000000000ULL)
- && (a.low || (a.high & 0x0000ffffffffffffULL));
+ ((a.high << 1) >= 0xFFFF000000000000ULL)
+ && (a.low || (a.high & 0x0000FFFFFFFFFFFFULL));
}
}
@@ -1112,12 +1113,12 @@ int float128_is_signaling_nan(float128 a, float_status *status)
{
if (status->snan_bit_is_one) {
return
- ((a.high << 1) >= 0xffff000000000000ULL)
- && (a.low || (a.high & 0x0000ffffffffffffULL));
+ ((a.high << 1) >= 0xFFFF000000000000ULL)
+ && (a.low || (a.high & 0x0000FFFFFFFFFFFFULL));
} else {
return
- ( ( ( a.high>>47 ) & 0xFFFF ) == 0xFFFE )
- && ( a.low || ( a.high & LIT64( 0x00007FFFFFFFFFFF ) ) );
+ (((a.high >> 47) & 0xFFFF) == 0xFFFE)
+ && (a.low || (a.high & LIT64(0x00007FFFFFFFFFFF)));
}
}
#endif
@@ -1153,8 +1154,8 @@ static commonNaNT float128ToCommonNaN(float128 a, float_status *status)
if (float128_is_signaling_nan(a, status)) {
float_raise(float_flag_invalid, status);
}
- z.sign = a.high>>63;
- shortShift128Left( a.high, a.low, 16, &z.high, &z.low );
+ z.sign = a.high >> 63;
+ shortShift128Left(a.high, a.low, 16, &z.high, &z.low);
return z;
}
@@ -1171,8 +1172,8 @@ static float128 commonNaNToFloat128(commonNaNT a, float_status *status)
return float128_default_nan(status);
}
- shift128Right( a.high, a.low, 16, &z.high, &z.low );
- z.high |= ( ( (uint64_t) a.sign )<<63 ) | LIT64( 0x7FFF000000000000 );
+ shift128Right(a.high, a.low, 16, &z.high, &z.low);
+ z.high |= (((uint64_t)a.sign) << 63) | LIT64(0x7FFF000000000000);
return z;
}
@@ -1201,9 +1202,9 @@ static float128 propagateFloat128NaN(float128 a, float128 b,
return float128_default_nan(status);
}
- if (lt128(a.high<<1, a.low, b.high<<1, b.low)) {
+ if (lt128(a.high << 1, a.low, b.high << 1, b.low)) {
aIsLargerSignificand = 0;
- } else if (lt128(b.high<<1, b.low, a.high<<1, a.low)) {
+ } else if (lt128(b.high << 1, b.low, a.high << 1, a.low)) {
aIsLargerSignificand = 1;
} else {
aIsLargerSignificand = (a.high < b.high) ? 1 : 0;
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 3/9] softfloat: For Mips only, correct default NaN values
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 1/9] softfloat: Implement run-time-configurable meaning of signaling NaN bit Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 2/9] softfloat: Clean code format in fpu/softfloat-specialize.h Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 4/9] softfloat: For Mips only, correct order in pickNaNMulAdd() Aleksandar Markovic
` (6 subsequent siblings)
9 siblings, 0 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Only for Mips platform, and only for cases when snan_bit_is_one is 0,
correct default NaN values (in their 16-, 32-, and 64-bit flavors).
For more info, see [1], page 84, Table 6.3 "Value Supplied When a New
Quiet NaN Is Created", and [2], page 52, Table 3.7 "Default NaN
Encodings".
[1] "MIPS Architecture For Programmers Volume II-A:
The MIPS64 Instruction Set Reference Manual",
Imagination Technologies LTD, Revision 6.04, November 13, 2015
[2] "MIPS Architecture for Programmers Volume IV-j:
The MIPS32 SIMD Architecture Module",
Imagination Technologies LTD, Revision 1.12, February 3, 2016
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
fpu/softfloat-specialize.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index e03a529..093218f 100644
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -97,7 +97,11 @@ float16 float16_default_nan(float_status *status)
if (status->snan_bit_is_one) {
return const_float16(0x7DFF);
} else {
+#if defined(TARGET_MIPS)
+ return const_float16(0x7E00);
+#else
return const_float16(0xFE00);
+#endif
}
#endif
}
@@ -116,7 +120,11 @@ float32 float32_default_nan(float_status *status)
if (status->snan_bit_is_one) {
return const_float32(0x7FBFFFFF);
} else {
+#if defined(TARGET_MIPS)
+ return const_float32(0x7FC00000);
+#else
return const_float32(0xFFC00000);
+#endif
}
#endif
}
@@ -135,7 +143,11 @@ float64 float64_default_nan(float_status *status)
if (status->snan_bit_is_one) {
return const_float64(LIT64(0x7FF7FFFFFFFFFFFF));
} else {
+#if defined(TARGET_MIPS)
+ return const_float64(LIT64(0x7FF8000000000000));
+#else
return const_float64(LIT64(0xFFF8000000000000));
+#endif
}
#endif
}
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 4/9] softfloat: For Mips only, correct order in pickNaNMulAdd()
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
` (2 preceding siblings ...)
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 3/9] softfloat: For Mips only, correct default NaN values Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 5/9] linux-user: Update preprocessor constants for Mips-specific e_flags bits Aleksandar Markovic
` (5 subsequent siblings)
9 siblings, 0 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Only for Mips platform, and only for cases when snan_bit_is_one is 0,
correct the order of argument comparisons in pickNaNMulAdd().
For more info, see [1], page 53, section "3.5.3 NaN Propagation".
[1] "MIPS Architecture for Programmers Volume IV-j:
The MIPS32 SIMD Architecture Module",
Imagination Technologies LTD, Revision 1.12, February 3, 2016
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
fpu/softfloat-specialize.h | 41 +++++++++++++++++++++++++++++------------
1 file changed, 29 insertions(+), 12 deletions(-)
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index 093218f..11fc66b 100644
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -571,19 +571,36 @@ static int pickNaNMulAdd(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN,
return 3;
}
- /* Prefer sNaN over qNaN, in the a, b, c order. */
- if (aIsSNaN) {
- return 0;
- } else if (bIsSNaN) {
- return 1;
- } else if (cIsSNaN) {
- return 2;
- } else if (aIsQNaN) {
- return 0;
- } else if (bIsQNaN) {
- return 1;
+ if (status->snan_bit_is_one) {
+ /* Prefer sNaN over qNaN, in the c, a, b order. */
+ if (cIsSNaN) {
+ return 2;
+ } else if (aIsSNaN) {
+ return 0;
+ } else if (bIsSNaN) {
+ return 1;
+ } else if (cIsQNaN) {
+ return 2;
+ } else if (aIsQNaN) {
+ return 0;
+ } else {
+ return 1;
+ }
} else {
- return 2;
+ /* Prefer sNaN over qNaN, in the a, b, c order. */
+ if (aIsSNaN) {
+ return 0;
+ } else if (bIsSNaN) {
+ return 1;
+ } else if (cIsSNaN) {
+ return 2;
+ } else if (aIsQNaN) {
+ return 0;
+ } else if (bIsQNaN) {
+ return 1;
+ } else {
+ return 2;
+ }
}
}
#elif defined(TARGET_PPC)
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 5/9] linux-user: Update preprocessor constants for Mips-specific e_flags bits
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
` (3 preceding siblings ...)
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 4/9] softfloat: For Mips only, correct order in pickNaNMulAdd() Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning Aleksandar Markovic
` (4 subsequent siblings)
9 siblings, 0 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Missing values EF_MIPS_FP64 and EF_MIPS_NAN2008 added, and the format
of the surrounding code segment adjusted.
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
include/elf.h | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/include/elf.h b/include/elf.h
index 28d448b..b7f59e4 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -46,14 +46,16 @@ typedef int64_t Elf64_Sxword;
#define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */
#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */
-#define EF_MIPS_NOREORDER 0x00000001
-#define EF_MIPS_PIC 0x00000002
-#define EF_MIPS_CPIC 0x00000004
-#define EF_MIPS_ABI2 0x00000020
-#define EF_MIPS_OPTIONS_FIRST 0x00000080
-#define EF_MIPS_32BITMODE 0x00000100
-#define EF_MIPS_ABI 0x0000f000
-#define EF_MIPS_ARCH 0xf0000000
+#define EF_MIPS_NOREORDER 0x00000001
+#define EF_MIPS_PIC 0x00000002
+#define EF_MIPS_CPIC 0x00000004
+#define EF_MIPS_ABI2 0x00000020
+#define EF_MIPS_OPTIONS_FIRST 0x00000080
+#define EF_MIPS_32BITMODE 0x00000100
+#define EF_MIPS_FP64 0x00000200
+#define EF_MIPS_NAN2008 0x00000400
+#define EF_MIPS_ABI 0x0000f000
+#define EF_MIPS_ARCH 0xf0000000
/* These constants define the different elf file types */
#define ET_NONE 0
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
` (4 preceding siblings ...)
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 5/9] linux-user: Update preprocessor constants for Mips-specific e_flags bits Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-06-02 9:17 ` Leon Alrae
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 7/9] target-mips: Add abs2008 flavor of <ABS|NEG>.<S|D> Aleksandar Markovic
` (3 subsequent siblings)
9 siblings, 1 reply; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Functions mips_cpu_reset() and msa_reset() are updated so that flag
snan_bit_is_one is properly set for any Mips FPU/MSA configuration.
For main FPUs, CPUs with FCR31's FCR31_NAN2008 bit set will invoke
set_snan_bit_is_one(0). For MSA, as it is IEEE 274-2008 compliant
from it inception, set_snan_bit_is_one(0) will always be invoked.
By applying this patch, a number of incorrect behaviors for CPU
configurations that require IEEE 754-2008 compliance will be fixed.
Those are behaviors that (up to the moment of applying this patch)
did not get the desired functionality from SoftFloat library with
respect to distinguishing between quiet and signaling NaN, getting
default NaN values (both quiet and signaling), establishing if a
floating point number is Nan or not, etc.
Two examples:
* <MAX|MAXA>.<D|S> will now correctly detect and propagate NaNs.
* CLASS.<D|S> and FCLASS.<D|S> will now correcty detect NaN flavors.
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
target-mips/translate.c | 6 +++++-
target-mips/translate_init.c | 3 ++-
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/target-mips/translate.c b/target-mips/translate.c
index e934884..2cdd2bd 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -20129,7 +20129,11 @@ void cpu_state_reset(CPUMIPSState *env)
env->CP0_PageGrain = env->cpu_model->CP0_PageGrain;
env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0;
env->active_fpu.fcr31 = env->cpu_model->CP1_fcr31;
- set_snan_bit_is_one(1, &env->active_fpu.fp_status);
+ if ((env->active_fpu.fcr31 >> FCR31_NAN2008) & 1) {
+ set_snan_bit_is_one(0, &env->active_fpu.fp_status);
+ } else {
+ set_snan_bit_is_one(1, &env->active_fpu.fp_status);
+ }
env->msair = env->cpu_model->MSAIR;
env->insn_flags = env->cpu_model->insn_flags;
diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c
index e81a831..a37d8bb 100644
--- a/target-mips/translate_init.c
+++ b/target-mips/translate_init.c
@@ -893,5 +893,6 @@ static void msa_reset(CPUMIPSState *env)
/* clear float_status nan mode */
set_default_nan_mode(0, &env->active_tc.msa_fp_status);
- set_snan_bit_is_one(1, &env->active_tc.msa_fp_status);
+ /* set proper signanling bit meaning ("1" means "quiet") */
+ set_snan_bit_is_one(0, &env->active_tc.msa_fp_status);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 7/9] target-mips: Add abs2008 flavor of <ABS|NEG>.<S|D>
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
` (5 preceding siblings ...)
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> Aleksandar Markovic
` (2 subsequent siblings)
9 siblings, 0 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Updated handling of instructions <ABS|NEG>.<S|D>. Note that legacy
(pre-abs2008) ABS and NEG instructions are arithmetic (and, therefore,
any NaN operand causes signaling invalid operation), while abs2008
ones are non-arithmetic, always and only changing the sign bit, even
for NaN-like operands. Details on these instructions are documented
in [1] p. 35 and 359.
Implementation-wise, abs2008 versions are implemented without helpers,
for simplicity and performance sake.
[1] "MIPS Architecture For Programmers Volume II-A:
The MIPS64 Instruction Set Reference Manual",
Imagination Technologies LTD, Revision 6.04, November 13, 2015
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
target-mips/translate.c | 26 ++++++++++++++++++++++----
1 file changed, 22 insertions(+), 4 deletions(-)
diff --git a/target-mips/translate.c b/target-mips/translate.c
index 2cdd2bd..3b6b3b5 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -1434,6 +1434,7 @@ typedef struct DisasContext {
bool vp;
bool cmgcr;
bool mrp;
+ bool abs2008;
} DisasContext;
enum {
@@ -8879,7 +8880,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_abs_s(fp0, fp0);
+ if (ctx->abs2008) {
+ tcg_gen_andi_i32(fp0, fp0, 0x7fffffffUL);
+ } else {
+ gen_helper_float_abs_s(fp0, fp0);
+ }
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -8898,7 +8903,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_chs_s(fp0, fp0);
+ if (ctx->abs2008) {
+ tcg_gen_xori_i32(fp0, fp0, 1UL << 31);
+ } else {
+ gen_helper_float_chs_s(fp0, fp0);
+ }
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -9369,7 +9378,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_abs_d(fp0, fp0);
+ if (ctx->abs2008) {
+ tcg_gen_andi_i64(fp0, fp0, 0x7fffffffffffffffULL);
+ } else {
+ gen_helper_float_abs_d(fp0, fp0);
+ }
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -9390,7 +9403,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_chs_d(fp0, fp0);
+ if (ctx->abs2008) {
+ tcg_gen_xori_i64(fp0, fp0, 1ULL << 63);
+ } else {
+ gen_helper_float_chs_d(fp0, fp0);
+ }
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -19775,6 +19792,7 @@ void gen_intermediate_code(CPUMIPSState *env, struct TranslationBlock *tb)
(env->insn_flags & (INSN_LOONGSON2E | INSN_LOONGSON2F));
ctx.vp = (env->CP0_Config5 >> CP0C5_VP) & 1;
ctx.mrp = (env->CP0_Config5 >> CP0C5_MRP) & 1;
+ ctx.abs2008 = (env->active_fpu.fcr31 >> FCR31_ABS2008) & 1;
restore_cpu_state(env, &ctx);
#ifdef CONFIG_USER_ONLY
ctx.mem_idx = MIPS_HFLAG_UM;
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
` (6 preceding siblings ...)
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 7/9] target-mips: Add abs2008 flavor of <ABS|NEG>.<S|D> Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-05-31 14:13 ` Leon Alrae
2016-06-07 11:39 ` Maciej W. Rozycki
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 9/9] target-mips: Implement FCR31's R/W bitmask and related functionalities Aleksandar Markovic
2016-05-25 12:56 ` [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
9 siblings, 2 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
New set of helpers for handling nan2008-syle versions of instructions
<CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, for Mips R6.
All involved instructions have float operand and integer result. Their
core functionality is implemented via invocations of appropriate SoftFloat
functions. The problematic cases are when the operand is a NaN, and also
when the operand (float) is out of the range of the result.
Here one can distinguish three cases:
CASE MIPS-A: (FCR31.NAN2008 == 1)
1. Operand is a NaN, result should be 0;
2. Operand is larger than INT_MAX, result should be INT_MAX;
2. Operand is smaller than INT_MIN, result should be INT_MIN.
CASE MIPS-B: (FCR31.NAN2008 == 0)
1. Operand is a NaN, result should be INT_MAX;
2. Operand is larger than INT_MAX, result should be INT_MAX;
2. Operand is smaller than INT_MIN, result should be INT_MAX.
CASE SOFTFLOAT:
1. Operand is a NaN, result is INT_MAX;
2. Operand is larger than INT_MAX, result is INT_MAX;
2. Operand is smaller than INT_MIN, result is INT_MIN.
It is interesting that neither MIPS-A nor MIPS-B desired behaviors
are in this sense identical to correspondent SoftFloat behavior.
Current implementation of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
implements case MIPS-B. This patch relates to case MIPS-A. For case
MIPS-A, only return value for NaN-operands should be corrected after
appropriate SoftFloat library function is called.
Related MSA instructions FTRUNC_S and FTINT_S already handle well
all cases, in the fashion similar to the code from this patch.
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
target-mips/helper.h | 18 +--
target-mips/op_helper.c | 369 +++++++++++++++++++++++++++++++++++++++++++++---
target-mips/translate.c | 122 +++++++++++++---
3 files changed, 461 insertions(+), 48 deletions(-)
diff --git a/target-mips/helper.h b/target-mips/helper.h
index 8546177..666936c 100644
--- a/target-mips/helper.h
+++ b/target-mips/helper.h
@@ -207,8 +207,6 @@ DEF_HELPER_4(ctc1, void, env, tl, i32, i32)
DEF_HELPER_2(float_cvtd_s, i64, env, i32)
DEF_HELPER_2(float_cvtd_w, i64, env, i32)
DEF_HELPER_2(float_cvtd_l, i64, env, i64)
-DEF_HELPER_2(float_cvtl_d, i64, env, i64)
-DEF_HELPER_2(float_cvtl_s, i64, env, i32)
DEF_HELPER_2(float_cvtps_pw, i64, env, i64)
DEF_HELPER_2(float_cvtpw_ps, i64, env, i64)
DEF_HELPER_2(float_cvts_d, i32, env, i64)
@@ -216,8 +214,6 @@ DEF_HELPER_2(float_cvts_w, i32, env, i32)
DEF_HELPER_2(float_cvts_l, i32, env, i64)
DEF_HELPER_2(float_cvts_pl, i32, env, i32)
DEF_HELPER_2(float_cvts_pu, i32, env, i32)
-DEF_HELPER_2(float_cvtw_s, i32, env, i32)
-DEF_HELPER_2(float_cvtw_d, i32, env, i64)
DEF_HELPER_3(float_addr_ps, i64, env, i64, i64)
DEF_HELPER_3(float_mulr_ps, i64, env, i64, i64)
@@ -242,14 +238,20 @@ FOP_PROTO(mina)
#undef FOP_PROTO
#define FOP_PROTO(op) \
-DEF_HELPER_2(float_ ## op ## l_s, i64, env, i32) \
-DEF_HELPER_2(float_ ## op ## l_d, i64, env, i64) \
-DEF_HELPER_2(float_ ## op ## w_s, i32, env, i32) \
-DEF_HELPER_2(float_ ## op ## w_d, i32, env, i64)
+DEF_HELPER_2(float_ ## op ## _l_s, i64, env, i32) \
+DEF_HELPER_2(float_ ## op ## _l_d, i64, env, i64) \
+DEF_HELPER_2(float_ ## op ## _w_s, i32, env, i32) \
+DEF_HELPER_2(float_ ## op ## _w_d, i32, env, i64)
+FOP_PROTO(cvt)
FOP_PROTO(round)
FOP_PROTO(trunc)
FOP_PROTO(ceil)
FOP_PROTO(floor)
+FOP_PROTO(cvt_2008)
+FOP_PROTO(round_2008)
+FOP_PROTO(trunc_2008)
+FOP_PROTO(ceil_2008)
+FOP_PROTO(floor_2008)
#undef FOP_PROTO
#define FOP_PROTO(op) \
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 9e7e2e0..0d1e959 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -2448,6 +2448,7 @@ void mips_cpu_unassigned_access(CPUState *cs, hwaddr addr,
#define FLOAT_TWO32 make_float32(1 << 30)
#define FLOAT_TWO64 make_float64(1ULL << 62)
+
#define FP_TO_INT32_OVERFLOW 0x7fffffff
#define FP_TO_INT64_OVERFLOW 0x7fffffffffffffffULL
@@ -2683,7 +2684,7 @@ uint64_t helper_float_cvtd_l(CPUMIPSState *env, uint64_t dt0)
return fdt2;
}
-uint64_t helper_float_cvtl_d(CPUMIPSState *env, uint64_t fdt0)
+uint64_t helper_float_cvt_l_d(CPUMIPSState *env, uint64_t fdt0)
{
uint64_t dt2;
@@ -2696,7 +2697,7 @@ uint64_t helper_float_cvtl_d(CPUMIPSState *env, uint64_t fdt0)
return dt2;
}
-uint64_t helper_float_cvtl_s(CPUMIPSState *env, uint32_t fst0)
+uint64_t helper_float_cvt_l_s(CPUMIPSState *env, uint32_t fst0)
{
uint64_t dt2;
@@ -2791,7 +2792,7 @@ uint32_t helper_float_cvts_pu(CPUMIPSState *env, uint32_t wth0)
return wt2;
}
-uint32_t helper_float_cvtw_s(CPUMIPSState *env, uint32_t fst0)
+uint32_t helper_float_cvt_w_s(CPUMIPSState *env, uint32_t fst0)
{
uint32_t wt2;
@@ -2804,7 +2805,7 @@ uint32_t helper_float_cvtw_s(CPUMIPSState *env, uint32_t fst0)
return wt2;
}
-uint32_t helper_float_cvtw_d(CPUMIPSState *env, uint64_t fdt0)
+uint32_t helper_float_cvt_w_d(CPUMIPSState *env, uint64_t fdt0)
{
uint32_t wt2;
@@ -2817,7 +2818,7 @@ uint32_t helper_float_cvtw_d(CPUMIPSState *env, uint64_t fdt0)
return wt2;
}
-uint64_t helper_float_roundl_d(CPUMIPSState *env, uint64_t fdt0)
+uint64_t helper_float_round_l_d(CPUMIPSState *env, uint64_t fdt0)
{
uint64_t dt2;
@@ -2832,7 +2833,7 @@ uint64_t helper_float_roundl_d(CPUMIPSState *env, uint64_t fdt0)
return dt2;
}
-uint64_t helper_float_roundl_s(CPUMIPSState *env, uint32_t fst0)
+uint64_t helper_float_round_l_s(CPUMIPSState *env, uint32_t fst0)
{
uint64_t dt2;
@@ -2847,7 +2848,7 @@ uint64_t helper_float_roundl_s(CPUMIPSState *env, uint32_t fst0)
return dt2;
}
-uint32_t helper_float_roundw_d(CPUMIPSState *env, uint64_t fdt0)
+uint32_t helper_float_round_w_d(CPUMIPSState *env, uint64_t fdt0)
{
uint32_t wt2;
@@ -2862,7 +2863,7 @@ uint32_t helper_float_roundw_d(CPUMIPSState *env, uint64_t fdt0)
return wt2;
}
-uint32_t helper_float_roundw_s(CPUMIPSState *env, uint32_t fst0)
+uint32_t helper_float_round_w_s(CPUMIPSState *env, uint32_t fst0)
{
uint32_t wt2;
@@ -2877,7 +2878,7 @@ uint32_t helper_float_roundw_s(CPUMIPSState *env, uint32_t fst0)
return wt2;
}
-uint64_t helper_float_truncl_d(CPUMIPSState *env, uint64_t fdt0)
+uint64_t helper_float_trunc_l_d(CPUMIPSState *env, uint64_t fdt0)
{
uint64_t dt2;
@@ -2890,7 +2891,7 @@ uint64_t helper_float_truncl_d(CPUMIPSState *env, uint64_t fdt0)
return dt2;
}
-uint64_t helper_float_truncl_s(CPUMIPSState *env, uint32_t fst0)
+uint64_t helper_float_trunc_l_s(CPUMIPSState *env, uint32_t fst0)
{
uint64_t dt2;
@@ -2903,7 +2904,7 @@ uint64_t helper_float_truncl_s(CPUMIPSState *env, uint32_t fst0)
return dt2;
}
-uint32_t helper_float_truncw_d(CPUMIPSState *env, uint64_t fdt0)
+uint32_t helper_float_trunc_w_d(CPUMIPSState *env, uint64_t fdt0)
{
uint32_t wt2;
@@ -2916,7 +2917,7 @@ uint32_t helper_float_truncw_d(CPUMIPSState *env, uint64_t fdt0)
return wt2;
}
-uint32_t helper_float_truncw_s(CPUMIPSState *env, uint32_t fst0)
+uint32_t helper_float_trunc_w_s(CPUMIPSState *env, uint32_t fst0)
{
uint32_t wt2;
@@ -2929,7 +2930,7 @@ uint32_t helper_float_truncw_s(CPUMIPSState *env, uint32_t fst0)
return wt2;
}
-uint64_t helper_float_ceill_d(CPUMIPSState *env, uint64_t fdt0)
+uint64_t helper_float_ceil_l_d(CPUMIPSState *env, uint64_t fdt0)
{
uint64_t dt2;
@@ -2944,7 +2945,7 @@ uint64_t helper_float_ceill_d(CPUMIPSState *env, uint64_t fdt0)
return dt2;
}
-uint64_t helper_float_ceill_s(CPUMIPSState *env, uint32_t fst0)
+uint64_t helper_float_ceil_l_s(CPUMIPSState *env, uint32_t fst0)
{
uint64_t dt2;
@@ -2959,7 +2960,7 @@ uint64_t helper_float_ceill_s(CPUMIPSState *env, uint32_t fst0)
return dt2;
}
-uint32_t helper_float_ceilw_d(CPUMIPSState *env, uint64_t fdt0)
+uint32_t helper_float_ceil_w_d(CPUMIPSState *env, uint64_t fdt0)
{
uint32_t wt2;
@@ -2974,7 +2975,7 @@ uint32_t helper_float_ceilw_d(CPUMIPSState *env, uint64_t fdt0)
return wt2;
}
-uint32_t helper_float_ceilw_s(CPUMIPSState *env, uint32_t fst0)
+uint32_t helper_float_ceil_w_s(CPUMIPSState *env, uint32_t fst0)
{
uint32_t wt2;
@@ -2989,7 +2990,7 @@ uint32_t helper_float_ceilw_s(CPUMIPSState *env, uint32_t fst0)
return wt2;
}
-uint64_t helper_float_floorl_d(CPUMIPSState *env, uint64_t fdt0)
+uint64_t helper_float_floor_l_d(CPUMIPSState *env, uint64_t fdt0)
{
uint64_t dt2;
@@ -3004,7 +3005,7 @@ uint64_t helper_float_floorl_d(CPUMIPSState *env, uint64_t fdt0)
return dt2;
}
-uint64_t helper_float_floorl_s(CPUMIPSState *env, uint32_t fst0)
+uint64_t helper_float_floor_l_s(CPUMIPSState *env, uint32_t fst0)
{
uint64_t dt2;
@@ -3019,7 +3020,7 @@ uint64_t helper_float_floorl_s(CPUMIPSState *env, uint32_t fst0)
return dt2;
}
-uint32_t helper_float_floorw_d(CPUMIPSState *env, uint64_t fdt0)
+uint32_t helper_float_floor_w_d(CPUMIPSState *env, uint64_t fdt0)
{
uint32_t wt2;
@@ -3034,7 +3035,7 @@ uint32_t helper_float_floorw_d(CPUMIPSState *env, uint64_t fdt0)
return wt2;
}
-uint32_t helper_float_floorw_s(CPUMIPSState *env, uint32_t fst0)
+uint32_t helper_float_floor_w_s(CPUMIPSState *env, uint32_t fst0)
{
uint32_t wt2;
@@ -3049,6 +3050,334 @@ uint32_t helper_float_floorw_s(CPUMIPSState *env, uint32_t fst0)
return wt2;
}
+uint64_t helper_float_cvt_2008_l_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint64_t dt2;
+
+ dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint64_t helper_float_cvt_2008_l_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint64_t dt2;
+
+ dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint32_t helper_float_cvt_2008_w_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint32_t wt2;
+
+ wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint32_t helper_float_cvt_2008_w_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint32_t wt2;
+
+ wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint64_t helper_float_round_2008_l_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint64_t dt2;
+
+ set_float_rounding_mode(float_round_nearest_even,
+ &env->active_fpu.fp_status);
+ dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint64_t helper_float_round_2008_l_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint64_t dt2;
+
+ set_float_rounding_mode(float_round_nearest_even,
+ &env->active_fpu.fp_status);
+ dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint32_t helper_float_round_2008_w_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint32_t wt2;
+
+ set_float_rounding_mode(float_round_nearest_even,
+ &env->active_fpu.fp_status);
+ wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint32_t helper_float_round_2008_w_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint32_t wt2;
+
+ set_float_rounding_mode(float_round_nearest_even,
+ &env->active_fpu.fp_status);
+ wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint64_t helper_float_trunc_2008_l_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint64_t dt2;
+
+ dt2 = float64_to_int64_round_to_zero(fdt0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint64_t helper_float_trunc_2008_l_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint64_t dt2;
+
+ dt2 = float32_to_int64_round_to_zero(fst0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint32_t helper_float_trunc_2008_w_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint32_t wt2;
+
+ wt2 = float64_to_int32_round_to_zero(fdt0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint32_t helper_float_trunc_2008_w_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint32_t wt2;
+
+ wt2 = float32_to_int32_round_to_zero(fst0, &env->active_fpu.fp_status);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint64_t helper_float_ceil_2008_l_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint64_t dt2;
+
+ set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
+ dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint64_t helper_float_ceil_2008_l_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint64_t dt2;
+
+ set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
+ dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint32_t helper_float_ceil_2008_w_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint32_t wt2;
+
+ set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
+ wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint32_t helper_float_ceil_2008_w_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint32_t wt2;
+
+ set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
+ wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint64_t helper_float_floor_2008_l_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint64_t dt2;
+
+ set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
+ dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint64_t helper_float_floor_2008_l_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint64_t dt2;
+
+ set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
+ dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ dt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return dt2;
+}
+
+uint32_t helper_float_floor_2008_w_d(CPUMIPSState *env, uint64_t fdt0)
+{
+ uint32_t wt2;
+
+ set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
+ wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float64_is_any_nan(fdt0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
+uint32_t helper_float_floor_2008_w_s(CPUMIPSState *env, uint32_t fst0)
+{
+ uint32_t wt2;
+
+ set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
+ wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
+ restore_rounding_mode(env);
+ if (get_float_exception_flags(&env->active_fpu.fp_status)
+ & float_flag_invalid) {
+ if (float32_is_any_nan(fst0)) {
+ wt2 = 0;
+ }
+ }
+ update_fcr31(env, GETPC());
+ return wt2;
+}
+
/* unary operations, not modifying fp status */
#define FLOAT_UNOP(name) \
uint64_t helper_float_ ## name ## _d(uint64_t fdt0) \
diff --git a/target-mips/translate.c b/target-mips/translate.c
index 3b6b3b5..52fc2bb 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -1434,6 +1434,7 @@ typedef struct DisasContext {
bool vp;
bool cmgcr;
bool mrp;
+ bool nan2008;
bool abs2008;
} DisasContext;
@@ -8919,7 +8920,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr32(ctx, fp32, fs);
- gen_helper_float_roundl_s(fp64, cpu_env, fp32);
+ if (ctx->nan2008) {
+ gen_helper_float_round_2008_l_s(fp64, cpu_env, fp32);
+ } else {
+ gen_helper_float_round_l_s(fp64, cpu_env, fp32);
+ }
tcg_temp_free_i32(fp32);
gen_store_fpr64(ctx, fp64, fd);
tcg_temp_free_i64(fp64);
@@ -8932,7 +8937,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr32(ctx, fp32, fs);
- gen_helper_float_truncl_s(fp64, cpu_env, fp32);
+ if (ctx->nan2008) {
+ gen_helper_float_trunc_2008_l_s(fp64, cpu_env, fp32);
+ } else {
+ gen_helper_float_trunc_l_s(fp64, cpu_env, fp32);
+ }
tcg_temp_free_i32(fp32);
gen_store_fpr64(ctx, fp64, fd);
tcg_temp_free_i64(fp64);
@@ -8945,7 +8954,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr32(ctx, fp32, fs);
- gen_helper_float_ceill_s(fp64, cpu_env, fp32);
+ if (ctx->nan2008) {
+ gen_helper_float_ceil_2008_l_s(fp64, cpu_env, fp32);
+ } else {
+ gen_helper_float_ceil_l_s(fp64, cpu_env, fp32);
+ }
tcg_temp_free_i32(fp32);
gen_store_fpr64(ctx, fp64, fd);
tcg_temp_free_i64(fp64);
@@ -8958,7 +8971,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr32(ctx, fp32, fs);
- gen_helper_float_floorl_s(fp64, cpu_env, fp32);
+ if (ctx->nan2008) {
+ gen_helper_float_floor_2008_l_s(fp64, cpu_env, fp32);
+ } else {
+ gen_helper_float_floor_l_s(fp64, cpu_env, fp32);
+ }
tcg_temp_free_i32(fp32);
gen_store_fpr64(ctx, fp64, fd);
tcg_temp_free_i64(fp64);
@@ -8969,7 +8986,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_roundw_s(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_round_2008_w_s(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_round_w_s(fp0, cpu_env, fp0);
+ }
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -8979,7 +9000,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_truncw_s(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_trunc_2008_w_s(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_trunc_w_s(fp0, cpu_env, fp0);
+ }
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -8989,7 +9014,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_ceilw_s(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_ceil_2008_w_s(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_ceil_w_s(fp0, cpu_env, fp0);
+ }
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -8999,7 +9028,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_floorw_s(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_floor_2008_w_s(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_floor_w_s(fp0, cpu_env, fp0);
+ }
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -9248,7 +9281,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i32 fp0 = tcg_temp_new_i32();
gen_load_fpr32(ctx, fp0, fs);
- gen_helper_float_cvtw_s(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_cvt_2008_w_s(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_cvt_w_s(fp0, cpu_env, fp0);
+ }
gen_store_fpr32(ctx, fp0, fd);
tcg_temp_free_i32(fp0);
}
@@ -9260,7 +9297,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr32(ctx, fp32, fs);
- gen_helper_float_cvtl_s(fp64, cpu_env, fp32);
+ if (ctx->nan2008) {
+ gen_helper_float_cvt_2008_l_s(fp64, cpu_env, fp32);
+ } else {
+ gen_helper_float_cvt_l_s(fp64, cpu_env, fp32);
+ }
tcg_temp_free_i32(fp32);
gen_store_fpr64(ctx, fp64, fd);
tcg_temp_free_i64(fp64);
@@ -9418,7 +9459,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_roundl_d(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_round_2008_l_d(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_round_l_d(fp0, cpu_env, fp0);
+ }
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -9429,7 +9474,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_truncl_d(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_trunc_2008_l_d(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_trunc_l_d(fp0, cpu_env, fp0);
+ }
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -9440,7 +9489,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_ceill_d(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_ceil_2008_l_d(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_ceil_l_d(fp0, cpu_env, fp0);
+ }
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -9451,7 +9504,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_floorl_d(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_floor_2008_l_d(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_floor_l_d(fp0, cpu_env, fp0);
+ }
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -9463,7 +9520,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp64, fs);
- gen_helper_float_roundw_d(fp32, cpu_env, fp64);
+ if (ctx->nan2008) {
+ gen_helper_float_round_2008_w_d(fp32, cpu_env, fp64);
+ } else {
+ gen_helper_float_round_w_d(fp32, cpu_env, fp64);
+ }
tcg_temp_free_i64(fp64);
gen_store_fpr32(ctx, fp32, fd);
tcg_temp_free_i32(fp32);
@@ -9476,7 +9537,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp64, fs);
- gen_helper_float_truncw_d(fp32, cpu_env, fp64);
+ if (ctx->nan2008) {
+ gen_helper_float_trunc_2008_w_d(fp32, cpu_env, fp64);
+ } else {
+ gen_helper_float_trunc_w_d(fp32, cpu_env, fp64);
+ }
tcg_temp_free_i64(fp64);
gen_store_fpr32(ctx, fp32, fd);
tcg_temp_free_i32(fp32);
@@ -9489,7 +9554,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp64, fs);
- gen_helper_float_ceilw_d(fp32, cpu_env, fp64);
+ if (ctx->nan2008) {
+ gen_helper_float_ceil_2008_w_d(fp32, cpu_env, fp64);
+ } else {
+ gen_helper_float_ceil_w_d(fp32, cpu_env, fp64);
+ }
tcg_temp_free_i64(fp64);
gen_store_fpr32(ctx, fp32, fd);
tcg_temp_free_i32(fp32);
@@ -9502,7 +9571,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp64, fs);
- gen_helper_float_floorw_d(fp32, cpu_env, fp64);
+ if (ctx->nan2008) {
+ gen_helper_float_floor_2008_w_d(fp32, cpu_env, fp64);
+ } else {
+ gen_helper_float_floor_w_d(fp32, cpu_env, fp64);
+ }
tcg_temp_free_i64(fp64);
gen_store_fpr32(ctx, fp32, fd);
tcg_temp_free_i32(fp32);
@@ -9775,7 +9848,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp64 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp64, fs);
- gen_helper_float_cvtw_d(fp32, cpu_env, fp64);
+ if (ctx->nan2008) {
+ gen_helper_float_cvt_2008_w_d(fp32, cpu_env, fp64);
+ } else {
+ gen_helper_float_cvt_w_d(fp32, cpu_env, fp64);
+ }
tcg_temp_free_i64(fp64);
gen_store_fpr32(ctx, fp32, fd);
tcg_temp_free_i32(fp32);
@@ -9787,7 +9864,11 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
TCGv_i64 fp0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp0, fs);
- gen_helper_float_cvtl_d(fp0, cpu_env, fp0);
+ if (ctx->nan2008) {
+ gen_helper_float_cvt_2008_l_d(fp0, cpu_env, fp0);
+ } else {
+ gen_helper_float_cvt_l_d(fp0, cpu_env, fp0);
+ }
gen_store_fpr64(ctx, fp0, fd);
tcg_temp_free_i64(fp0);
}
@@ -19792,6 +19873,7 @@ void gen_intermediate_code(CPUMIPSState *env, struct TranslationBlock *tb)
(env->insn_flags & (INSN_LOONGSON2E | INSN_LOONGSON2F));
ctx.vp = (env->CP0_Config5 >> CP0C5_VP) & 1;
ctx.mrp = (env->CP0_Config5 >> CP0C5_MRP) & 1;
+ ctx.nan2008 = (env->active_fpu.fcr31 >> FCR31_NAN2008) & 1;
ctx.abs2008 = (env->active_fpu.fcr31 >> FCR31_ABS2008) & 1;
restore_cpu_state(env, &ctx);
#ifdef CONFIG_USER_ONLY
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* [Qemu-devel] [PATCH v6 9/9] target-mips: Implement FCR31's R/W bitmask and related functionalities
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
` (7 preceding siblings ...)
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> Aleksandar Markovic
@ 2016-05-16 14:12 ` Aleksandar Markovic
2016-06-02 9:12 ` Leon Alrae
2016-05-25 12:56 ` [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
9 siblings, 1 reply; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-16 14:12 UTC (permalink / raw)
To: qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm, qemu-ppc,
petar.jovanovic, pbonzini, miodrag.dinic, edgar.iglesias, gxt,
leon.alrae, afaerber, aurelien, rth, maciej.rozycki
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
This patch implements read and write access rules for Mips floating
point control and status register (FCR31). The change can be divided
into following parts:
- Add preprocessor constants for all bits of FCR31 and related masks
for its subfields.
- Add correspondant fields that will keep FCR31's R/W bitmask in
procesor definitions and processor float_status structure.
- Add appropriate value for FCR31's R/W bitmask for each supported
processor.
- Modify handling of CFC1 and CTC1 instructions (cases 25, 26, 28)
so that they utilize newly-defind constants. This is just a cosmetic
change, to make the code more readable, and to avoid usage of
hardcoded constants.
- Modify handling of CTC1 (case 31) instruction to use FCR31's R/W
bitmask.
- Modify handling user mode executables for Mips, in relation to the
bit EF_MIPS_NAN2008 from ELF header, that is in turn related to
reading and writing to FCR31.
- Modify gdb behavior in relation to FCR31.
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
---
linux-user/main.c | 14 ++++++++
target-mips/cpu.h | 75 +++++++++++++++++++++++++++++++++++++++++--
target-mips/gdbstub.c | 8 ++---
target-mips/op_helper.c | 76 +++++++++++++++++++++++++++++++-------------
target-mips/translate.c | 9 ++----
target-mips/translate_init.c | 54 +++++++++++++++++++++++++++++++
6 files changed, 199 insertions(+), 37 deletions(-)
diff --git a/linux-user/main.c b/linux-user/main.c
index 5f3ec97..cc21057 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -4608,6 +4608,20 @@ int main(int argc, char **argv, char **envp)
if (regs->cp0_epc & 1) {
env->hflags |= MIPS_HFLAG_M16;
}
+ if (((info->elf_flags & EF_MIPS_NAN2008) != 0) !=
+ ((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) != 0)) {
+ if ((env->active_fpu.fcr31_rw_bitmask &
+ (1 << FCR31_NAN2008)) == 0) {
+ fprintf(stderr, "ELF binary's NaN mode not supported by CPU\n");
+ exit(1);
+ }
+ if ((info->elf_flags & EF_MIPS_NAN2008) != 0) {
+ env->active_fpu.fcr31 |= (1 << FCR31_NAN2008);
+ } else {
+ env->active_fpu.fcr31 &= ~(1 << FCR31_NAN2008);
+ }
+ restore_snan_bit_mode(env);
+ }
}
#elif defined(TARGET_OPENRISC)
{
diff --git a/target-mips/cpu.h b/target-mips/cpu.h
index 6478420..bbf81c7 100644
--- a/target-mips/cpu.h
+++ b/target-mips/cpu.h
@@ -110,9 +110,71 @@ struct CPUMIPSFPUContext {
#define FCR0_PRID 8
#define FCR0_REV 0
/* fcsr */
+ uint32_t fcr31_rw_bitmask;
uint32_t fcr31;
-#define FCR31_ABS2008 19
-#define FCR31_NAN2008 18
+#define FCR31_ROUNDING_MODE_0 0
+#define FCR31_ROUNDING_MODE_1 1
+#define FCR31_FLAGS_INEXACT 2
+#define FCR31_FLAGS_UNDERFLOW 3
+#define FCR31_FLAGS_OVERFLOW 4
+#define FCR31_FLAGS_DIV0 5
+#define FCR31_FLAGS_INVALID 6
+#define FCR31_ENABLE_INEXACT 7
+#define FCR31_ENABLE_UNDERFLOW 8
+#define FCR31_ENABLE_OVERFLOW 9
+#define FCR31_ENABLE_DIV0 10
+#define FCR31_ENABLE_INVALID 11
+#define FCR31_CAUSE_INEXACT 12
+#define FCR31_CAUSE_UNDERFLOW 13
+#define FCR31_CAUSE_OVERFLOW 14
+#define FCR31_CAUSE_DIV0 15
+#define FCR31_CAUSE_INVALID 16
+#define FCR31_CAUSE_UNIMPLEMENTED 17
+#define FCR31_NAN2008 18
+#define FCR31_ABS2008 19
+#define FCR31_0 20
+#define FCR31_IMPL_0 21
+#define FCR31_IMPL_1 22
+#define FCR31_FCC_COND 23
+#define FCR31_FS 24
+#define FCR31_FCC_COND_1 25
+#define FCR31_FCC_COND_2 26
+#define FCR31_FCC_COND_3 27
+#define FCR31_FCC_COND_4 28
+#define FCR31_FCC_COND_5 29
+#define FCR31_FCC_COND_6 30
+#define FCR31_FCC_COND_7 31
+#define FCR31_ROUNDING_MODE_MASK ((1 << FCR31_ROUNDING_MODE_0) | \
+ (1 << FCR31_ROUNDING_MODE_1))
+#define FCR31_FLAGS_MASK ((1 << FCR31_FLAGS_INEXACT) | \
+ (1 << FCR31_FLAGS_UNDERFLOW) | \
+ (1 << FCR31_FLAGS_OVERFLOW) | \
+ (1 << FCR31_FLAGS_DIV0) | \
+ (1 << FCR31_FLAGS_INVALID))
+#define FCR31_ENABLE_MASK ((1 << FCR31_ENABLE_INEXACT) | \
+ (1 << FCR31_ENABLE_UNDERFLOW) | \
+ (1 << FCR31_ENABLE_OVERFLOW) | \
+ (1 << FCR31_ENABLE_DIV0) | \
+ (1 << FCR31_ENABLE_INVALID))
+#define FCR31_CAUSE_MASK ((1 << FCR31_CAUSE_INEXACT) | \
+ (1 << FCR31_CAUSE_UNDERFLOW) | \
+ (1 << FCR31_CAUSE_OVERFLOW) | \
+ (1 << FCR31_CAUSE_DIV0) | \
+ (1 << FCR31_CAUSE_INVALID) | \
+ (1 << FCR31_CAUSE_UNIMPLEMENTED))
+#define FCR31_IEEE2008_MASK ((1 << FCR31_NAN2008) | \
+ (1 << FCR31_ABS2008))
+#define FCR31_IMPL_MASK ((1 << FCR31_IMPL_0) | \
+ (1 << FCR31_IMPL_1))
+#define FCR31_FCC_MASK ((1 << FCR31_FCC_COND) | \
+ (1 << FCR31_FCC_COND_1) | \
+ (1 << FCR31_FCC_COND_2) | \
+ (1 << FCR31_FCC_COND_3) | \
+ (1 << FCR31_FCC_COND_4) | \
+ (1 << FCR31_FCC_COND_5) | \
+ (1 << FCR31_FCC_COND_6) | \
+ (1 << FCR31_FCC_COND_7))
+#define FCR31_FS_MASK (1 << FCR31_FS)
#define SET_FP_COND(num,env) do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
#define CLEAR_FP_COND(num,env) do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
#define GET_FP_COND(env) ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1))
@@ -813,14 +875,21 @@ static inline void restore_rounding_mode(CPUMIPSState *env)
static inline void restore_flush_mode(CPUMIPSState *env)
{
- set_flush_to_zero((env->active_fpu.fcr31 & (1 << 24)) != 0,
+ set_flush_to_zero((env->active_fpu.fcr31 & (1 << FCR31_FS)) != 0,
&env->active_fpu.fp_status);
}
+static inline void restore_snan_bit_mode(CPUMIPSState *env)
+{
+ set_snan_bit_is_one(!((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) != 0),
+ &env->active_fpu.fp_status);
+}
+
static inline void restore_fp_status(CPUMIPSState *env)
{
restore_rounding_mode(env);
restore_flush_mode(env);
+ restore_snan_bit_mode(env);
}
static inline void restore_msa_fp_status(CPUMIPSState *env)
diff --git a/target-mips/gdbstub.c b/target-mips/gdbstub.c
index b0b4a32..c407aa9 100644
--- a/target-mips/gdbstub.c
+++ b/target-mips/gdbstub.c
@@ -89,11 +89,9 @@ int mips_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
if (env->CP0_Config1 & (1 << CP0C1_FP) && n >= 38 && n < 72) {
switch (n) {
case 70:
- env->active_fpu.fcr31 = tmp & 0xFF83FFFF;
- /* set rounding mode */
- restore_rounding_mode(env);
- /* set flush-to-zero mode */
- restore_flush_mode(env);
+ env->active_fpu.fcr31 = (tmp & env->active_fpu.fcr31_rw_bitmask) |
+ (env->active_fpu.fcr31 & !(env->active_fpu.fcr31_rw_bitmask));
+ restore_fp_status(env);
break;
case 71:
/* FIR is read-only. Ignore writes. */
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 0d1e959..cb890bc 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -2490,15 +2490,23 @@ target_ulong helper_cfc1(CPUMIPSState *env, uint32_t reg)
}
break;
case 25:
- arg1 = ((env->active_fpu.fcr31 >> 24) & 0xfe) | ((env->active_fpu.fcr31 >> 23) & 0x1);
+ /* read from Floating Point Condition Codes Register (FCCR) */
+ arg1 = ((env->active_fpu.fcr31 >> 24) & 0xfe) |
+ ((env->active_fpu.fcr31 >> 23) & 0x1);
break;
case 26:
- arg1 = env->active_fpu.fcr31 & 0x0003f07c;
+ /* read from Floating Point Enables Register (FENR) */
+ arg1 = (env->active_fpu.fcr31 & FCR31_CAUSE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_FLAGS_MASK);
break;
case 28:
- arg1 = (env->active_fpu.fcr31 & 0x00000f83) | ((env->active_fpu.fcr31 >> 22) & 0x4);
+ /* read from Floating Point Enables Register (FENR) */
+ arg1 = (env->active_fpu.fcr31 & FCR31_ROUNDING_MODE_MASK) |
+ ((env->active_fpu.fcr31 >> 22) & 0x4) |
+ (env->active_fpu.fcr31 & FCR31_ENABLE_MASK);
break;
default:
+ /* read from Floating Point Control and Status Register (FCSR) */
arg1 = (int32_t)env->active_fpu.fcr31;
break;
}
@@ -2558,42 +2566,66 @@ void helper_ctc1(CPUMIPSState *env, target_ulong arg1, uint32_t fs, uint32_t rt)
}
break;
case 25:
+ /* write to Floating Point Condition Codes Register (FCCR) */
if ((env->insn_flags & ISA_MIPS32R6) || (arg1 & 0xffffff00)) {
return;
}
- env->active_fpu.fcr31 = (env->active_fpu.fcr31 & 0x017fffff) | ((arg1 & 0xfe) << 24) |
- ((arg1 & 0x1) << 23);
+ env->active_fpu.fcr31 =
+ (env->active_fpu.fcr31 & FCR31_ROUNDING_MODE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_FLAGS_MASK) |
+ (env->active_fpu.fcr31 & FCR31_ENABLE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_CAUSE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_IEEE2008_MASK) |
+ (env->active_fpu.fcr31 & FCR31_IMPL_MASK) |
+ (env->active_fpu.fcr31 & FCR31_FCC_MASK) |
+ ((arg1 & 0x1) << 23) |
+ (env->active_fpu.fcr31 & FCR31_FS_MASK) |
+ ((arg1 & 0xfe) << 24);
break;
case 26:
- if (arg1 & 0x007c0000)
+ /* write to Floating Point Exceptions Register (FEXR) */
+ if (arg1 & 0x007c0000) {
return;
- env->active_fpu.fcr31 = (env->active_fpu.fcr31 & 0xfffc0f83) | (arg1 & 0x0003f07c);
+ }
+ env->active_fpu.fcr31 =
+ (env->active_fpu.fcr31 & FCR31_ROUNDING_MODE_MASK) |
+ (arg1 & FCR31_FLAGS_MASK) |
+ (env->active_fpu.fcr31 & FCR31_ENABLE_MASK) |
+ (arg1 & FCR31_CAUSE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_IEEE2008_MASK) |
+ (env->active_fpu.fcr31 & FCR31_IMPL_MASK) |
+ (env->active_fpu.fcr31 & FCR31_FCC_MASK) |
+ (env->active_fpu.fcr31 & FCR31_FS_MASK);
break;
case 28:
- if (arg1 & 0x007c0000)
+ /* write to Floating Point Enables Register (FENR) */
+ if (arg1 & 0x007c0000) {
return;
- env->active_fpu.fcr31 = (env->active_fpu.fcr31 & 0xfefff07c) | (arg1 & 0x00000f83) |
- ((arg1 & 0x4) << 22);
+ }
+ env->active_fpu.fcr31 =
+ (arg1 & FCR31_ROUNDING_MODE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_FLAGS_MASK) |
+ (arg1 & FCR31_ENABLE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_CAUSE_MASK) |
+ (env->active_fpu.fcr31 & FCR31_IEEE2008_MASK) |
+ (env->active_fpu.fcr31 & FCR31_IMPL_MASK) |
+ (env->active_fpu.fcr31 & FCR31_FCC_MASK) |
+ ((arg1 & 0x4) << 22);
break;
case 31:
- if (env->insn_flags & ISA_MIPS32R6) {
- uint32_t mask = 0xfefc0000;
- env->active_fpu.fcr31 = (arg1 & ~mask) |
- (env->active_fpu.fcr31 & mask);
- } else if (!(arg1 & 0x007c0000)) {
- env->active_fpu.fcr31 = arg1;
- }
+ /* write to Floating Point Control and Status Register (FCSR) */
+ env->active_fpu.fcr31 = (arg1 & env->active_fpu.fcr31_rw_bitmask) |
+ (env->active_fpu.fcr31 & ~(env->active_fpu.fcr31_rw_bitmask));
break;
default:
return;
}
- /* set rounding mode */
- restore_rounding_mode(env);
- /* set flush-to-zero mode */
- restore_flush_mode(env);
+ restore_fp_status(env);
set_float_exception_flags(0, &env->active_fpu.fp_status);
- if ((GET_FP_ENABLE(env->active_fpu.fcr31) | 0x20) & GET_FP_CAUSE(env->active_fpu.fcr31))
+ if ((GET_FP_ENABLE(env->active_fpu.fcr31) | 0x20) &
+ GET_FP_CAUSE(env->active_fpu.fcr31)) {
do_raise_exception(env, EXCP_FPE, GETPC());
+ }
}
int ieee_ex_to_mips(int xcpt)
diff --git a/target-mips/translate.c b/target-mips/translate.c
index 52fc2bb..aaee871 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -20228,12 +20228,8 @@ void cpu_state_reset(CPUMIPSState *env)
env->CP0_PageGrain_rw_bitmask = env->cpu_model->CP0_PageGrain_rw_bitmask;
env->CP0_PageGrain = env->cpu_model->CP0_PageGrain;
env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0;
+ env->active_fpu.fcr31_rw_bitmask = env->cpu_model->CP1_fcr31_rw_bitmask;
env->active_fpu.fcr31 = env->cpu_model->CP1_fcr31;
- if ((env->active_fpu.fcr31 >> FCR31_NAN2008) & 1) {
- set_snan_bit_is_one(0, &env->active_fpu.fp_status);
- } else {
- set_snan_bit_is_one(1, &env->active_fpu.fp_status);
- }
env->msair = env->cpu_model->MSAIR;
env->insn_flags = env->cpu_model->insn_flags;
@@ -20343,8 +20339,7 @@ void cpu_state_reset(CPUMIPSState *env)
}
compute_hflags(env);
- restore_rounding_mode(env);
- restore_flush_mode(env);
+ restore_fp_status(env);
restore_pamask(env);
cs->exception_index = EXCP_NONE;
diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c
index a37d8bb..1857990 100644
--- a/target-mips/translate_init.c
+++ b/target-mips/translate_init.c
@@ -84,6 +84,7 @@ struct mips_def_t {
int32_t CP0_TCStatus_rw_bitmask;
int32_t CP0_SRSCtl;
int32_t CP1_fcr0;
+ int32_t CP1_fcr31_rw_bitmask;
int32_t CP1_fcr31;
int32_t MSAIR;
int32_t SEGBITS;
@@ -273,6 +274,10 @@ static const mips_def_t mips_defs[] =
.CP0_Status_rw_bitmask = 0x3678FF1F,
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) |
(1 << FCR0_D) | (1 << FCR0_S) | (0x93 << FCR0_PRID),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R2 | ASE_MIPS16,
@@ -303,6 +308,10 @@ static const mips_def_t mips_defs[] =
(0xff << CP0TCSt_TASID),
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) |
(1 << FCR0_D) | (1 << FCR0_S) | (0x95 << FCR0_PRID),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.CP0_SRSCtl = (0xf << CP0SRSCtl_HSS),
.CP0_SRSConf0_rw_bitmask = 0x3fffffff,
.CP0_SRSConf0 = (1U << CP0SRSC0_M) | (0x3fe << CP0SRSC0_SRS3) |
@@ -343,6 +352,10 @@ static const mips_def_t mips_defs[] =
.CP0_Status_rw_bitmask = 0x3778FF1F,
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) |
(1 << FCR0_D) | (1 << FCR0_S) | (0x93 << FCR0_PRID),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R2 | ASE_MIPS16 | ASE_DSP | ASE_DSPR2,
@@ -427,6 +440,9 @@ static const mips_def_t mips_defs[] =
(1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) |
(1 << FCR0_D) | (1 << FCR0_S) | (0x03 << FCR0_PRID),
.CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008),
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 32,
.PABITS = 40,
.insn_flags = CPU_MIPS32R5 | ASE_MSA,
@@ -465,6 +481,9 @@ static const mips_def_t mips_defs[] =
(1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) |
(1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV),
.CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008),
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R6 | ASE_MICROMIPS,
@@ -485,6 +504,10 @@ static const mips_def_t mips_defs[] =
.CP0_Status_rw_bitmask = 0x3678FFFF,
/* The R4000 has a full 64bit FPU but doesn't use the fcr0 bits. */
.CP1_fcr0 = (0x5 << FCR0_PRID) | (0x0 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ (1 << FCR31_FCC_COND) | FCR31_FS_MASK,
.SEGBITS = 40,
.PABITS = 36,
.insn_flags = CPU_MIPS3,
@@ -503,6 +526,10 @@ static const mips_def_t mips_defs[] =
.CP0_Status_rw_bitmask = 0x3678FFFF,
/* The VR5432 has a full 64bit FPU but doesn't use the fcr0 bits. */
.CP1_fcr0 = (0x54 << FCR0_PRID) | (0x0 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 40,
.PABITS = 32,
.insn_flags = CPU_VR54XX,
@@ -548,6 +575,10 @@ static const mips_def_t mips_defs[] =
/* The 5Kf has F64 / L / W but doesn't use the fcr0 bits. */
.CP1_fcr0 = (1 << FCR0_D) | (1 << FCR0_S) |
(0x81 << FCR0_PRID) | (0x0 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 42,
.PABITS = 36,
.insn_flags = CPU_MIPS64,
@@ -575,6 +606,10 @@ static const mips_def_t mips_defs[] =
.CP1_fcr0 = (1 << FCR0_3D) | (1 << FCR0_PS) |
(1 << FCR0_D) | (1 << FCR0_S) |
(0x82 << FCR0_PRID) | (0x0 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 40,
.PABITS = 36,
.insn_flags = CPU_MIPS64 | ASE_MIPS3D,
@@ -601,6 +636,10 @@ static const mips_def_t mips_defs[] =
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_3D) | (1 << FCR0_PS) |
(1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) |
(1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 42,
.PABITS = 36,
.insn_flags = CPU_MIPS64R2 | ASE_MIPS3D,
@@ -686,6 +725,9 @@ static const mips_def_t mips_defs[] =
(1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) |
(1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV),
.CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008),
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 48,
.PABITS = 48,
.insn_flags = CPU_MIPS64R6 | ASE_MSA,
@@ -704,6 +746,10 @@ static const mips_def_t mips_defs[] =
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x35D0FFFF,
.CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 40,
.PABITS = 40,
.insn_flags = CPU_LOONGSON2E,
@@ -722,6 +768,10 @@ static const mips_def_t mips_defs[] =
.CCRes = 2,
.CP0_Status_rw_bitmask = 0xF5D0FF1F, /* Bits 7:5 not writable. */
.CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 40,
.PABITS = 40,
.insn_flags = CPU_LOONGSON2F,
@@ -749,6 +799,10 @@ static const mips_def_t mips_defs[] =
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_3D) | (1 << FCR0_PS) |
(1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) |
(1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV),
+ .CP1_fcr31 = 0,
+ .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK |
+ FCR31_ENABLE_MASK | FCR31_CAUSE_MASK |
+ FCR31_FCC_MASK | FCR31_FS_MASK,
.SEGBITS = 42,
.PABITS = 36,
.insn_flags = CPU_MIPS64R2 | ASE_DSP | ASE_DSPR2,
--
1.9.1
^ permalink raw reply related [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
` (8 preceding siblings ...)
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 9/9] target-mips: Implement FCR31's R/W bitmask and related functionalities Aleksandar Markovic
@ 2016-05-25 12:56 ` Aleksandar Markovic
9 siblings, 0 replies; 23+ messages in thread
From: Aleksandar Markovic @ 2016-05-25 12:56 UTC (permalink / raw)
To: Aleksandar Markovic, qemu-devel
Cc: peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, qemu-arm, qemu-ppc, Petar Jovanovic,
pbonzini, Miodrag Dinic, edgar.iglesias, gxt, Leon Alrae,
aurelien, rth, Maciej Rozycki
ping
________________________________________
From: Aleksandar Markovic [aleksandar.markovic@rt-rk.com]
Sent: Monday, May 16, 2016 7:12 AM
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org; proljc@gmail.com; kbastian@mail.uni-paderborn.de; mark.cave-ayland@ilande.co.uk; agraf@suse.de; blauwirbel@gmail.com; jcmvbkbc@gmail.com; Aleksandar Markovic; qemu-arm@nongnu.org; qemu-ppc@nongnu.org; Petar Jovanovic; pbonzini@redhat.com; Miodrag Dinic; edgar.iglesias@gmail.com; gxt@mprc.pku.edu.cn; Leon Alrae; afaerber@suse.de; aurelien@aurel32.net; rth@twiddle.net; Maciej Rozycki
Subject: [PATCH v6 0/9] IEEE 754-2008 support for Mips
From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
v6 - code for hanlding MSA FCLASS instructions slightly simplified.
- handling of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> corrected for
nan2008 case.
- R/W bitmask for FCR31 introduced, and related functionalities
implemented.
- cleanup items for SoftFloat library are now in a separate patch.
- minor errors corrected.
v5 - platform initialization code revisited one more time.
- handling of CLASS.<S|D> and their MSA counterparts revisited.
- better orgranization of patches (squashing, splitting).
- corrected handling of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>.
- code cleanup item in genfarith() - order of cases.
- scripts/checkpatch.pl executed and errors addressed.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg02774.html)
v4 - Added code cleanup items:
a. Capitalization of hex constants in softfloat-specialize.h;
b. White spaces in softfloat-specialize.h;
c. Order of Mips helpers for CVT.<L|W>.<S|D>.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01962.html)
v3 - Patch series reorganized into 6 patches instead of 2.
- Commit messages improved.
- Except commit messages, net result of applying v3 and v2 is the same.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01870.html)
v2 - Relevant CPU initialization code changes revisited for all platforms.
- In connection with <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> and
<ABS|NEG>.<S|D> Mips instructions handling, decision on whether
pre-nan2008/pre-abs2008 or nan2008/abs2008 handling will apply
moved from run-time to translate-time.
- For Mips only, in nan2008 cases only, default NaN values fixed.
- For Mips only, in nan2008 cases only, order in pickNaNMulAdd() fixed.
- Code cleanup issues:
a. Constants <floatx80|float128>_default_nan_<low|high> removed;
b. Suffix <l|w>_<s|d> replaced with _<l|w>_<s|d> for some Mips helpers;
c. In vicinity of changes, fixed not-beautiful code formatting.
- Commit messages improved.
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg01232.html)
v1 - Initial version
(link: https://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg06082.html)
Mips platform represents the most complex case among QEMU-supported
platforms in reference to certain aspects of floating-point arithmetics.
This is mostly a consequence of the fact that Mips platform, for many
reasons, evolved considerably over time related to floating-point
arithmetics standards (significantly more than other platforms).
It has been difficult for emulators like QEMU to support such variety
of configurations.
This patch series provides number of IEEE 754-2008-related features to
Mips platform. It addresses the most sensitive changes that require
modification of SoftFloat library, also used by most other platforms.
In order to make develpoment, testing, and integration easier, the patch
is split into two distinct parts:
1. Part 1 (patches 1/9, 2/9, 3/9, 4/9, 5/9) that does not change any
calculation or behavior on any platform (and, for that matter, even on
Mips platform). Its sole purpose is to address platform independant
issues in a non-invasive manner, and to make Part 2 possible.
2. Part 2 (patches 6/9, 7/9, 8/9, 9/9) that sets some Mips processors to
use provisions from Part 1, and additionally implements number of
IEEE 754-2008-related features for Mips, while, at the same time,
dealing with files located in directory target-mips only.
This patch series is based on the original set of patches proposed by Maciej W.
Rozycki: http://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg00968.html
Aleksandar Markovic (9):
softfloat: Implement run-time-configurable meaning of signaling NaN bit
softfloat: Clean code format in fpu/softfloat-specialize.h
softfloat: For Mips only, correct default NaN values
softfloat: For Mips only, correct order in pickNaNMulAdd()
linux-user: Update preprocessor constants for Mips-specific e_flags bits
target-mips: Activate IEEE 754-2008 signaling NaN bit meaning
target-mips: Add abs2008 flavor of <ABS|NEG>.<S|D>
target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
target-mips: Implement FCR31's R/W bitmask and related functionalities
fpu/softfloat-specialize.h | 664 +++++++++++++++++++++---------------------
fpu/softfloat.c | 172 +++++------
include/elf.h | 18 +-
include/fpu/softfloat.h | 45 +--
linux-user/main.c | 14 +
target-arm/helper-a64.c | 14 +-
target-arm/helper.c | 40 +--
target-m68k/helper.c | 6 +-
target-microblaze/op_helper.c | 6 +-
target-mips/cpu.h | 80 ++++-
target-mips/gdbstub.c | 8 +-
target-mips/helper.h | 22 +-
target-mips/msa_helper.c | 88 +++---
target-mips/op_helper.c | 463 ++++++++++++++++++++++++++---
target-mips/translate.c | 156 ++++++++--
target-mips/translate_init.c | 57 ++++
target-ppc/fpu_helper.c | 120 ++++----
target-s390x/fpu_helper.c | 28 +-
target-s390x/helper.h | 6 +-
target-s390x/translate.c | 6 +-
target-sh4/cpu.c | 1 +
target-unicore32/cpu.c | 2 +
22 files changed, 1322 insertions(+), 694 deletions(-)
--
1.9.1
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> Aleksandar Markovic
@ 2016-05-31 14:13 ` Leon Alrae
2016-06-07 11:39 ` Maciej W. Rozycki
1 sibling, 0 replies; 23+ messages in thread
From: Leon Alrae @ 2016-05-31 14:13 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: qemu-devel, peter.maydell, proljc, kbastian, mark.cave-ayland,
agraf, blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm,
qemu-ppc, petar.jovanovic, pbonzini, miodrag.dinic,
edgar.iglesias, gxt, afaerber, aurelien, rth, maciej.rozycki
On Mon, May 16, 2016 at 04:12:44PM +0200, Aleksandar Markovic wrote:
> From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
>
> New set of helpers for handling nan2008-syle versions of instructions
> <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, for Mips R6.
>
> All involved instructions have float operand and integer result. Their
> core functionality is implemented via invocations of appropriate SoftFloat
> functions. The problematic cases are when the operand is a NaN, and also
> when the operand (float) is out of the range of the result.
>
> Here one can distinguish three cases:
>
> CASE MIPS-A: (FCR31.NAN2008 == 1)
>
> 1. Operand is a NaN, result should be 0;
> 2. Operand is larger than INT_MAX, result should be INT_MAX;
> 2. Operand is smaller than INT_MIN, result should be INT_MIN.
>
> CASE MIPS-B: (FCR31.NAN2008 == 0)
>
> 1. Operand is a NaN, result should be INT_MAX;
> 2. Operand is larger than INT_MAX, result should be INT_MAX;
> 2. Operand is smaller than INT_MIN, result should be INT_MAX.
>
> CASE SOFTFLOAT:
>
> 1. Operand is a NaN, result is INT_MAX;
> 2. Operand is larger than INT_MAX, result is INT_MAX;
> 2. Operand is smaller than INT_MIN, result is INT_MIN.
>
> It is interesting that neither MIPS-A nor MIPS-B desired behaviors
> are in this sense identical to correspondent SoftFloat behavior.
>
> Current implementation of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
> implements case MIPS-B. This patch relates to case MIPS-A. For case
> MIPS-A, only return value for NaN-operands should be corrected after
> appropriate SoftFloat library function is called.
>
> Related MSA instructions FTRUNC_S and FTINT_S already handle well
> all cases, in the fashion similar to the code from this patch.
>
> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
> ---
> target-mips/helper.h | 18 +--
> target-mips/op_helper.c | 369 +++++++++++++++++++++++++++++++++++++++++++++---
> target-mips/translate.c | 122 +++++++++++++---
> 3 files changed, 461 insertions(+), 48 deletions(-)
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 9/9] target-mips: Implement FCR31's R/W bitmask and related functionalities
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 9/9] target-mips: Implement FCR31's R/W bitmask and related functionalities Aleksandar Markovic
@ 2016-06-02 9:12 ` Leon Alrae
0 siblings, 0 replies; 23+ messages in thread
From: Leon Alrae @ 2016-06-02 9:12 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: qemu-devel, peter.maydell, proljc, kbastian, mark.cave-ayland,
agraf, blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm,
qemu-ppc, petar.jovanovic, pbonzini, miodrag.dinic,
edgar.iglesias, gxt, afaerber, aurelien, rth, maciej.rozycki
> - Add preprocessor constants for all bits of FCR31 and related masks
> for its subfields.
Introducing all these constants for fcr31_rw_bitmask doesn't seem necessary
or useful
>
> - Modify handling of CFC1 and CTC1 instructions (cases 25, 26, 28)
> so that they utilize newly-defind constants. This is just a cosmetic
> change, to make the code more readable, and to avoid usage of
> hardcoded constants.
this an unrelated change; it should be moved to a separate patch
> +static inline void restore_snan_bit_mode(CPUMIPSState *env)
> +{
> + set_snan_bit_is_one(!((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) != 0),
this is just: (env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) == 0
> @@ -89,11 +89,9 @@ int mips_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
> if (env->CP0_Config1 & (1 << CP0C1_FP) && n >= 38 && n < 72) {
> switch (n) {
> case 70:
> - env->active_fpu.fcr31 = tmp & 0xFF83FFFF;
> - /* set rounding mode */
> - restore_rounding_mode(env);
> - /* set flush-to-zero mode */
> - restore_flush_mode(env);
> + env->active_fpu.fcr31 = (tmp & env->active_fpu.fcr31_rw_bitmask) |
> + (env->active_fpu.fcr31 & !(env->active_fpu.fcr31_rw_bitmask));
I think you wanted bitwise-not here
> + restore_fp_status(env);
> break;
> case 71:
> /* FIR is read-only. Ignore writes. */
> diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
> index 0d1e959..cb890bc 100644
> --- a/target-mips/op_helper.c
> +++ b/target-mips/op_helper.c
> @@ -2490,15 +2490,23 @@ target_ulong helper_cfc1(CPUMIPSState *env, uint32_t reg)
> }
> break;
> case 25:
> - arg1 = ((env->active_fpu.fcr31 >> 24) & 0xfe) | ((env->active_fpu.fcr31 >> 23) & 0x1);
> + /* read from Floating Point Condition Codes Register (FCCR) */
> + arg1 = ((env->active_fpu.fcr31 >> 24) & 0xfe) |
> + ((env->active_fpu.fcr31 >> 23) & 0x1);
this is an unrelated cosmetic change, please remove it from this patch (there
are more changes like that in this patch)
> @@ -2558,42 +2566,66 @@ void helper_ctc1(CPUMIPSState *env, target_ulong arg1, uint32_t fs, uint32_t rt)
> }
> break;
> case 25:
> + /* write to Floating Point Condition Codes Register (FCCR) */
> if ((env->insn_flags & ISA_MIPS32R6) || (arg1 & 0xffffff00)) {
> return;
> }
> - env->active_fpu.fcr31 = (env->active_fpu.fcr31 & 0x017fffff) | ((arg1 & 0xfe) << 24) |
> - ((arg1 & 0x1) << 23);
> + env->active_fpu.fcr31 =
> + (env->active_fpu.fcr31 & FCR31_ROUNDING_MODE_MASK) |
> + (env->active_fpu.fcr31 & FCR31_FLAGS_MASK) |
> + (env->active_fpu.fcr31 & FCR31_ENABLE_MASK) |
> + (env->active_fpu.fcr31 & FCR31_CAUSE_MASK) |
> + (env->active_fpu.fcr31 & FCR31_IEEE2008_MASK) |
> + (env->active_fpu.fcr31 & FCR31_IMPL_MASK) |
> + (env->active_fpu.fcr31 & FCR31_FCC_MASK) |
> + ((arg1 & 0x1) << 23) |
> + (env->active_fpu.fcr31 & FCR31_FS_MASK) |
> + ((arg1 & 0xfe) << 24);
> break;
I don't find it easier to read. CTC1 and CFC1 helpers became a mixture of
various sub-masks and hardcoded constants. Also, it is now harder to map
the implementation to the lines from CTC1/CFC1 in the MIPS64BIS manual:
elseif fs = 25 then /* FCCR */
if temp31..8 != then
UNPREDICTABLE
else
FCSR <- temp7..1 || FCSR24 || temp0 || FCSR22..0
Thanks,
Leon
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning Aleksandar Markovic
@ 2016-06-02 9:17 ` Leon Alrae
0 siblings, 0 replies; 23+ messages in thread
From: Leon Alrae @ 2016-06-02 9:17 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: qemu-devel, peter.maydell, proljc, kbastian, mark.cave-ayland,
agraf, blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm,
qemu-ppc, petar.jovanovic, pbonzini, miodrag.dinic,
edgar.iglesias, gxt, afaerber, aurelien, rth, maciej.rozycki
> diff --git a/target-mips/translate.c b/target-mips/translate.c
> index e934884..2cdd2bd 100644
> --- a/target-mips/translate.c
> +++ b/target-mips/translate.c
> @@ -20129,7 +20129,11 @@ void cpu_state_reset(CPUMIPSState *env)
> env->CP0_PageGrain = env->cpu_model->CP0_PageGrain;
> env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0;
> env->active_fpu.fcr31 = env->cpu_model->CP1_fcr31;
> - set_snan_bit_is_one(1, &env->active_fpu.fp_status);
> + if ((env->active_fpu.fcr31 >> FCR31_NAN2008) & 1) {
> + set_snan_bit_is_one(0, &env->active_fpu.fp_status);
> + } else {
> + set_snan_bit_is_one(1, &env->active_fpu.fp_status);
> + }
This change is reverted in patch #9, perhaps it will be better to fold
it into that patch?
Thanks,
Leon
> env->msair = env->cpu_model->MSAIR;
> env->insn_flags = env->cpu_model->insn_flags;
>
> diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c
> index e81a831..a37d8bb 100644
> --- a/target-mips/translate_init.c
> +++ b/target-mips/translate_init.c
> @@ -893,5 +893,6 @@ static void msa_reset(CPUMIPSState *env)
> /* clear float_status nan mode */
> set_default_nan_mode(0, &env->active_tc.msa_fp_status);
>
> - set_snan_bit_is_one(1, &env->active_tc.msa_fp_status);
> + /* set proper signanling bit meaning ("1" means "quiet") */
> + set_snan_bit_is_one(0, &env->active_tc.msa_fp_status);
> }
> --
> 1.9.1
>
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> Aleksandar Markovic
2016-05-31 14:13 ` Leon Alrae
@ 2016-06-07 11:39 ` Maciej W. Rozycki
2016-06-10 10:13 ` Aleksandar Markovic
1 sibling, 1 reply; 23+ messages in thread
From: Maciej W. Rozycki @ 2016-06-07 11:39 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: qemu-devel, peter.maydell, proljc, kbastian, mark.cave-ayland,
agraf, blauwirbel, jcmvbkbc, aleksandar.markovic, qemu-arm,
qemu-ppc, petar.jovanovic, pbonzini, miodrag.dinic,
edgar.iglesias, gxt, Leon Alrae, afaerber, Aurelien Jarno, rth
On Mon, 16 May 2016, Aleksandar Markovic wrote:
> Here one can distinguish three cases:
>
> CASE MIPS-A: (FCR31.NAN2008 == 1)
>
> 1. Operand is a NaN, result should be 0;
> 2. Operand is larger than INT_MAX, result should be INT_MAX;
> 2. Operand is smaller than INT_MIN, result should be INT_MIN.
>
> CASE MIPS-B: (FCR31.NAN2008 == 0)
>
> 1. Operand is a NaN, result should be INT_MAX;
> 2. Operand is larger than INT_MAX, result should be INT_MAX;
> 2. Operand is smaller than INT_MIN, result should be INT_MAX.
>
> CASE SOFTFLOAT:
>
> 1. Operand is a NaN, result is INT_MAX;
> 2. Operand is larger than INT_MAX, result is INT_MAX;
> 2. Operand is smaller than INT_MIN, result is INT_MIN.
>
> It is interesting that neither MIPS-A nor MIPS-B desired behaviors
> are in this sense identical to correspondent SoftFloat behavior.
A bug in SoftFloat probably -- it has only been fixed quite recently to
handle all MIPS architecture's peculiarites correctly and this case must
have been missed then, making data produced not necessarily identical
between the legacy-NaN hard-float and the soft-float ABIs, even though
intent has been for it to be.
FAOD, you refer to SoftFloat in the most recent version of GCC, do you?
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-07 11:39 ` Maciej W. Rozycki
@ 2016-06-10 10:13 ` Aleksandar Markovic
2016-06-10 10:35 ` Maciej W. Rozycki
0 siblings, 1 reply; 23+ messages in thread
From: Aleksandar Markovic @ 2016-06-10 10:13 UTC (permalink / raw)
To: Maciej Rozycki, Aleksandar Markovic
Cc: qemu-devel, peter.maydell, proljc, kbastian, mark.cave-ayland,
agraf, blauwirbel, jcmvbkbc, qemu-arm, qemu-ppc, Petar Jovanovic,
pbonzini, Miodrag Dinic, edgar.iglesias, gxt, Leon Alrae,
afaerber, Aurelien Jarno, rth
I referred to SoftFloat library in QEMU code, and the case "Operand is smaller than INT_MIN" is different between SoftFloat and Mips-B, while the case "Operand is a NaN" is different between SoftFloat and Mips-A.
Aleksandar
________________________________________
From: Maciej Rozycki
Sent: Tuesday, June 07, 2016 4:39 AM
To: Aleksandar Markovic
Cc: qemu-devel@nongnu.org; peter.maydell@linaro.org; proljc@gmail.com; kbastian@mail.uni-paderborn.de; mark.cave-ayland@ilande.co.uk; agraf@suse.de; blauwirbel@gmail.com; jcmvbkbc@gmail.com; Aleksandar Markovic; qemu-arm@nongnu.org; qemu-ppc@nongnu.org; Petar Jovanovic; pbonzini@redhat.com; Miodrag Dinic; edgar.iglesias@gmail.com; gxt@mprc.pku.edu.cn; Leon Alrae; afaerber@suse.de; Aurelien Jarno; rth@twiddle.net
Subject: Re: [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
On Mon, 16 May 2016, Aleksandar Markovic wrote:
> Here one can distinguish three cases:
>
> CASE MIPS-A: (FCR31.NAN2008 == 1)
>
> 1. Operand is a NaN, result should be 0;
> 2. Operand is larger than INT_MAX, result should be INT_MAX;
> 2. Operand is smaller than INT_MIN, result should be INT_MIN.
>
> CASE MIPS-B: (FCR31.NAN2008 == 0)
>
> 1. Operand is a NaN, result should be INT_MAX;
> 2. Operand is larger than INT_MAX, result should be INT_MAX;
> 2. Operand is smaller than INT_MIN, result should be INT_MAX.
>
> CASE SOFTFLOAT:
>
> 1. Operand is a NaN, result is INT_MAX;
> 2. Operand is larger than INT_MAX, result is INT_MAX;
> 2. Operand is smaller than INT_MIN, result is INT_MIN.
>
> It is interesting that neither MIPS-A nor MIPS-B desired behaviors
> are in this sense identical to correspondent SoftFloat behavior.
A bug in SoftFloat probably -- it has only been fixed quite recently to
handle all MIPS architecture's peculiarites correctly and this case must
have been missed then, making data produced not necessarily identical
between the legacy-NaN hard-float and the soft-float ABIs, even though
intent has been for it to be.
FAOD, you refer to SoftFloat in the most recent version of GCC, do you?
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-10 10:13 ` Aleksandar Markovic
@ 2016-06-10 10:35 ` Maciej W. Rozycki
2016-06-10 17:00 ` Aleksandar Markovic
0 siblings, 1 reply; 23+ messages in thread
From: Maciej W. Rozycki @ 2016-06-10 10:35 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: Aleksandar Markovic, qemu-devel, peter.maydell, proljc, kbastian,
mark.cave-ayland, agraf, blauwirbel, jcmvbkbc, qemu-arm,
qemu-ppc, Petar Jovanovic, pbonzini, Miodrag Dinic,
edgar.iglesias, gxt, Leon Alrae, afaerber, Aurelien Jarno, rth
On Fri, 10 Jun 2016, Aleksandar Markovic wrote:
> I referred to SoftFloat library in QEMU code, and the case "Operand is
> smaller than INT_MIN" is different between SoftFloat and Mips-B, while
> the case "Operand is a NaN" is different between SoftFloat and Mips-A.
Ah, but then you just can and indeed need to fix it to match hardware.
I had it done properly with the original patches I believe.
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-10 10:35 ` Maciej W. Rozycki
@ 2016-06-10 17:00 ` Aleksandar Markovic
2016-06-10 20:12 ` Maciej W. Rozycki
0 siblings, 1 reply; 23+ messages in thread
From: Aleksandar Markovic @ 2016-06-10 17:00 UTC (permalink / raw)
To: Maciej Rozycki
Cc: Aleksandar Markovic, qemu-devel, peter.maydell, proljc, kbastian,
mark.cave-ayland, agraf, blauwirbel, jcmvbkbc, qemu-arm,
qemu-ppc, Petar Jovanovic, pbonzini, Miodrag Dinic,
edgar.iglesias, gxt, Leon Alrae, afaerber, Aurelien Jarno, rth
The changes that make QEMU behavior the same as hardware behavior (in relation to CEIL, CVT, FLOOR, ROUND, TRUNC Mips instructions) are already contained in this patch.
I just mentioned Mips-A / Mips-B / SoftFloat differences as an explanation/observation related to the change in this patch.
Aleksandar
________________________________________
From: Maciej Rozycki
Sent: Friday, June 10, 2016 3:35 AM
To: Aleksandar Markovic
Cc: Aleksandar Markovic; qemu-devel@nongnu.org; peter.maydell@linaro.org; proljc@gmail.com; kbastian@mail.uni-paderborn.de; mark.cave-ayland@ilande.co.uk; agraf@suse.de; blauwirbel@gmail.com; jcmvbkbc@gmail.com; qemu-arm@nongnu.org; qemu-ppc@nongnu.org; Petar Jovanovic; pbonzini@redhat.com; Miodrag Dinic; edgar.iglesias@gmail.com; gxt@mprc.pku.edu.cn; Leon Alrae; afaerber@suse.de; Aurelien Jarno; rth@twiddle.net
Subject: RE: [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
On Fri, 10 Jun 2016, Aleksandar Markovic wrote:
> I referred to SoftFloat library in QEMU code, and the case "Operand is
> smaller than INT_MIN" is different between SoftFloat and Mips-B, while
> the case "Operand is a NaN" is different between SoftFloat and Mips-A.
Ah, but then you just can and indeed need to fix it to match hardware.
I had it done properly with the original patches I believe.
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-10 17:00 ` Aleksandar Markovic
@ 2016-06-10 20:12 ` Maciej W. Rozycki
2016-06-14 14:17 ` Leon Alrae
0 siblings, 1 reply; 23+ messages in thread
From: Maciej W. Rozycki @ 2016-06-10 20:12 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: Aleksandar Markovic, qemu-devel, peter.maydell, proljc, kbastian,
mark.cave-ayland, agraf, blauwirbel, jcmvbkbc, qemu-arm,
qemu-ppc, Petar Jovanovic, pbonzini, Miodrag Dinic,
edgar.iglesias, gxt, Leon Alrae, afaerber, Aurelien Jarno, rth
On Fri, 10 Jun 2016, Aleksandar Markovic wrote:
> The changes that make QEMU behavior the same as hardware behavior (in
> relation to CEIL, CVT, FLOOR, ROUND, TRUNC Mips instructions) are
> already contained in this patch.
Good, however that means that you've really combined two logically
separate changes into a single patch:
1. A bug fix for SoftFloat legacy-NaN (original) MIPS support, which has
been there probably since forever (i.e. since the MIPS target was added
to QEMU).
2. A new feature for 2008-NaN MIPS support.
To me it really looks like the two need to be separate patches, with the
bug fix applied first (or among any other bug fixes at the beginning) in
the patch set, or even as a separate change marked as a prerequisite for
the rest of the changes.
The bug fix will then be self-contained and more prominently exposed,
rather than being buried among feature additions. It can then be
independently reviewed and likely more easily accepted as long as it is
technically correct. It can also be cherry-picked and backported easily
if necessary, perhaps outside the upstream tree.
Review of the new feature set can then follow, once the bug(s) have been
fixed.
> I just mentioned Mips-A / Mips-B / SoftFloat differences as an
> explanation/observation related to the change in this patch.
Maybe it's just myself, but from your description I got the impression
that your change preserves the status quo and the explanation merely
serves the purpose of documenting it. Please consider rewriting it such
that it is unambiguous that the SoftFloat bug is being fixed with your
change.
Obviously once you've made the bug fix a separate change, it'll become
unambiguous naturally, as then you won't have the 2008-NaN feature along
it obfuscating the picture.
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-10 20:12 ` Maciej W. Rozycki
@ 2016-06-14 14:17 ` Leon Alrae
2016-06-14 15:30 ` Maciej W. Rozycki
0 siblings, 1 reply; 23+ messages in thread
From: Leon Alrae @ 2016-06-14 14:17 UTC (permalink / raw)
To: Maciej W. Rozycki
Cc: Aleksandar Markovic, Aleksandar Markovic, qemu-devel,
peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, qemu-arm, qemu-ppc, Petar Jovanovic,
pbonzini, Miodrag Dinic, edgar.iglesias, gxt, afaerber,
Aurelien Jarno, rth
On Fri, Jun 10, 2016 at 09:12:12PM +0100, Maciej W. Rozycki wrote:
> On Fri, 10 Jun 2016, Aleksandar Markovic wrote:
>
> > The changes that make QEMU behavior the same as hardware behavior (in
> > relation to CEIL, CVT, FLOOR, ROUND, TRUNC Mips instructions) are
> > already contained in this patch.
>
> Good, however that means that you've really combined two logically
> separate changes into a single patch:
>
> 1. A bug fix for SoftFloat legacy-NaN (original) MIPS support, which has
> been there probably since forever (i.e. since the MIPS target was added
> to QEMU).
I've just done another round of review and as far as I can tell these
patches don't modify the legacy-NaN MIPS behaviour. I believe Aleksandar
was referring to new functionality (i.e. 2008 NaN) only.
Regards,
Leon
>
> 2. A new feature for 2008-NaN MIPS support.
>
> To me it really looks like the two need to be separate patches, with the
> bug fix applied first (or among any other bug fixes at the beginning) in
> the patch set, or even as a separate change marked as a prerequisite for
> the rest of the changes.
>
> The bug fix will then be self-contained and more prominently exposed,
> rather than being buried among feature additions. It can then be
> independently reviewed and likely more easily accepted as long as it is
> technically correct. It can also be cherry-picked and backported easily
> if necessary, perhaps outside the upstream tree.
>
> Review of the new feature set can then follow, once the bug(s) have been
> fixed.
>
> > I just mentioned Mips-A / Mips-B / SoftFloat differences as an
> > explanation/observation related to the change in this patch.
>
> Maybe it's just myself, but from your description I got the impression
> that your change preserves the status quo and the explanation merely
> serves the purpose of documenting it. Please consider rewriting it such
> that it is unambiguous that the SoftFloat bug is being fixed with your
> change.
>
> Obviously once you've made the bug fix a separate change, it'll become
> unambiguous naturally, as then you won't have the 2008-NaN feature along
> it obfuscating the picture.
>
> Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-14 14:17 ` Leon Alrae
@ 2016-06-14 15:30 ` Maciej W. Rozycki
2016-06-20 10:20 ` Aleksandar Markovic
0 siblings, 1 reply; 23+ messages in thread
From: Maciej W. Rozycki @ 2016-06-14 15:30 UTC (permalink / raw)
To: Leon Alrae
Cc: Aleksandar Markovic, Aleksandar Markovic, qemu-devel,
peter.maydell, proljc, kbastian, mark.cave-ayland, agraf,
blauwirbel, jcmvbkbc, qemu-arm, qemu-ppc, Petar Jovanovic,
pbonzini, Miodrag Dinic, edgar.iglesias, gxt, afaerber,
Aurelien Jarno, rth
On Tue, 14 Jun 2016, Leon Alrae wrote:
> > 1. A bug fix for SoftFloat legacy-NaN (original) MIPS support, which has
> > been there probably since forever (i.e. since the MIPS target was added
> > to QEMU).
>
> I've just done another round of review and as far as I can tell these
> patches don't modify the legacy-NaN MIPS behaviour. I believe Aleksandar
> was referring to new functionality (i.e. 2008 NaN) only.
Well, if there's a bug, then it needs to be fixed rather than documented.
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-14 15:30 ` Maciej W. Rozycki
@ 2016-06-20 10:20 ` Aleksandar Markovic
2016-06-20 14:40 ` Maciej W. Rozycki
0 siblings, 1 reply; 23+ messages in thread
From: Aleksandar Markovic @ 2016-06-20 10:20 UTC (permalink / raw)
To: Maciej Rozycki, Leon Alrae
Cc: Aleksandar Markovic, qemu-devel, peter.maydell, proljc, kbastian,
mark.cave-ayland, agraf, blauwirbel, jcmvbkbc, qemu-arm,
qemu-ppc, Petar Jovanovic, pbonzini, Miodrag Dinic,
edgar.iglesias, gxt, afaerber, Aurelien Jarno, rth
This patch is about NaN-2008 flavor of Mips instructions CEIL, CVT, FLOOR, ROUND, TRUNC only (its title is "Add nan2008 flavor...").
Legacy-NaN flavors of the same Mips instructions already operate correctly, and there is nothing to be fixed.
The commit message is not description of another bug, it explains the context of the change, and the content of added code segments.
________________________________________
From: Maciej Rozycki
Sent: Tuesday, June 14, 2016 8:30 AM
To: Leon Alrae
Cc: Aleksandar Markovic; Aleksandar Markovic; qemu-devel@nongnu.org; peter.maydell@linaro.org; proljc@gmail.com; kbastian@mail.uni-paderborn.de; mark.cave-ayland@ilande.co.uk; agraf@suse.de; blauwirbel@gmail.com; jcmvbkbc@gmail.com; qemu-arm@nongnu.org; qemu-ppc@nongnu.org; Petar Jovanovic; pbonzini@redhat.com; Miodrag Dinic; edgar.iglesias@gmail.com; gxt@mprc.pku.edu.cn; afaerber@suse.de; Aurelien Jarno; rth@twiddle.net
Subject: Re: [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
On Tue, 14 Jun 2016, Leon Alrae wrote:
> > 1. A bug fix for SoftFloat legacy-NaN (original) MIPS support, which has
> > been there probably since forever (i.e. since the MIPS target was added
> > to QEMU).
>
> I've just done another round of review and as far as I can tell these
> patches don't modify the legacy-NaN MIPS behaviour. I believe Aleksandar
> was referring to new functionality (i.e. 2008 NaN) only.
Well, if there's a bug, then it needs to be fixed rather than documented.
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
* Re: [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>
2016-06-20 10:20 ` Aleksandar Markovic
@ 2016-06-20 14:40 ` Maciej W. Rozycki
0 siblings, 0 replies; 23+ messages in thread
From: Maciej W. Rozycki @ 2016-06-20 14:40 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: Leon Alrae, Aleksandar Markovic, qemu-devel, peter.maydell,
proljc, kbastian, mark.cave-ayland, agraf, blauwirbel, jcmvbkbc,
qemu-arm, qemu-ppc, Petar Jovanovic, pbonzini, Miodrag Dinic,
edgar.iglesias, gxt, afaerber, Aurelien Jarno, rth
On Mon, 20 Jun 2016, Aleksandar Markovic wrote:
> This patch is about NaN-2008 flavor of Mips instructions CEIL, CVT,
> FLOOR, ROUND, TRUNC only (its title is "Add nan2008 flavor...").
>
> Legacy-NaN flavors of the same Mips instructions already operate
> correctly, and there is nothing to be fixed.
>
> The commit message is not description of another bug, it explains the
> context of the change, and the content of added code segments.
Well, if the matter does not affect MIPS emulation, then why do you think
there's a need to mention it in the first place?
I don't think stating what other emulation targets do in a commit
description for a platform feature adds any value, but I think it bears
the risk to confuse people examining code history. Your description has
to be meaningful for someone reading it say 10 years on from now who does
not necessarily know the context nor has any of us available to ask.
Please consider this.
If you do think this mention adds value, then please make it unambiguous
in the commit description that the third conversion variant applies to
non-MIPS targets only. It wasn't to me at all or I wouldn't have spoken
out.
Thank you.
Maciej
^ permalink raw reply [flat|nested] 23+ messages in thread
end of thread, other threads:[~2016-06-20 14:41 UTC | newest]
Thread overview: 23+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-05-16 14:12 [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 1/9] softfloat: Implement run-time-configurable meaning of signaling NaN bit Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 2/9] softfloat: Clean code format in fpu/softfloat-specialize.h Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 3/9] softfloat: For Mips only, correct default NaN values Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 4/9] softfloat: For Mips only, correct order in pickNaNMulAdd() Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 5/9] linux-user: Update preprocessor constants for Mips-specific e_flags bits Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning Aleksandar Markovic
2016-06-02 9:17 ` Leon Alrae
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 7/9] target-mips: Add abs2008 flavor of <ABS|NEG>.<S|D> Aleksandar Markovic
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> Aleksandar Markovic
2016-05-31 14:13 ` Leon Alrae
2016-06-07 11:39 ` Maciej W. Rozycki
2016-06-10 10:13 ` Aleksandar Markovic
2016-06-10 10:35 ` Maciej W. Rozycki
2016-06-10 17:00 ` Aleksandar Markovic
2016-06-10 20:12 ` Maciej W. Rozycki
2016-06-14 14:17 ` Leon Alrae
2016-06-14 15:30 ` Maciej W. Rozycki
2016-06-20 10:20 ` Aleksandar Markovic
2016-06-20 14:40 ` Maciej W. Rozycki
2016-05-16 14:12 ` [Qemu-devel] [PATCH v6 9/9] target-mips: Implement FCR31's R/W bitmask and related functionalities Aleksandar Markovic
2016-06-02 9:12 ` Leon Alrae
2016-05-25 12:56 ` [Qemu-devel] [PATCH v6 0/9] IEEE 754-2008 support for Mips Aleksandar Markovic
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