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From: David Gibson <david@gibson.dropbear.id.au>
To: peter.maydell@linaro.org
Cc: lvivier@redhat.com, aik@ozlabs.ru,
	Richard Henderson <richard.henderson@linaro.org>,
	Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>,
	qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org,
	clg@kaod.org, David Gibson <david@gibson.dropbear.id.au>
Subject: [PULL 27/53] target/ppc: use existing VsrD() macro to eliminate HI_IDX and LO_IDX from dfp_helper.c
Date: Fri,  4 Oct 2019 19:37:21 +1000	[thread overview]
Message-ID: <20191004093747.31350-28-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <20191004093747.31350-1-david@gibson.dropbear.id.au>

From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

Switch over all accesses to the decimal numbers held in struct PPC_DFP from
using HI_IDX and LO_IDX to using the VsrD() macro instead. Not only does this
allow the compiler to ensure that the various dfp_* functions are being passed
a ppc_vsr_t rather than an arbitrary uint64_t pointer, but also allows the
host endian-specific HI_IDX and LO_IDX to be completely removed from
dfp_helper.c.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20190926185801.11176-7-mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target/ppc/dfp_helper.c | 70 ++++++++++++++++++-----------------------
 1 file changed, 31 insertions(+), 39 deletions(-)

diff --git a/target/ppc/dfp_helper.c b/target/ppc/dfp_helper.c
index b72084d50a..c2bb458a78 100644
--- a/target/ppc/dfp_helper.c
+++ b/target/ppc/dfp_helper.c
@@ -28,13 +28,6 @@
 #include "libdecnumber/dpd/decimal64.h"
 #include "libdecnumber/dpd/decimal128.h"
 
-#if defined(HOST_WORDS_BIGENDIAN)
-#define HI_IDX 0
-#define LO_IDX 1
-#else
-#define HI_IDX 1
-#define LO_IDX 0
-#endif
 
 static void get_dfp64(ppc_vsr_t *dst, ppc_fprp_t *dfp)
 {
@@ -1039,31 +1032,31 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b)              \
 DFP_HELPER_CTFIX(dctfix, 64)
 DFP_HELPER_CTFIX(dctfixq, 128)
 
-static inline void dfp_set_bcd_digit_64(uint64_t *t, uint8_t digit,
-                                            unsigned n)
+static inline void dfp_set_bcd_digit_64(ppc_vsr_t *t, uint8_t digit,
+                                        unsigned n)
 {
-    *t |= ((uint64_t)(digit & 0xF) << (n << 2));
+    t->VsrD(1) |= ((uint64_t)(digit & 0xF) << (n << 2));
 }
 
-static inline void dfp_set_bcd_digit_128(uint64_t *t, uint8_t digit,
-                                             unsigned n)
+static inline void dfp_set_bcd_digit_128(ppc_vsr_t *t, uint8_t digit,
+                                         unsigned n)
 {
-    t[(n & 0x10) ? HI_IDX : LO_IDX] |=
+    t->VsrD((n & 0x10) ? 0 : 1) |=
         ((uint64_t)(digit & 0xF) << ((n & 15) << 2));
 }
 
-static inline void dfp_set_sign_64(uint64_t *t, uint8_t sgn)
+static inline void dfp_set_sign_64(ppc_vsr_t *t, uint8_t sgn)
 {
-    *t <<= 4;
-    *t |= (sgn & 0xF);
+    t->VsrD(1) <<= 4;
+    t->VsrD(1) |= (sgn & 0xF);
 }
 
-static inline void dfp_set_sign_128(uint64_t *t, uint8_t sgn)
+static inline void dfp_set_sign_128(ppc_vsr_t *t, uint8_t sgn)
 {
-    t[HI_IDX] <<= 4;
-    t[HI_IDX] |= (t[LO_IDX] >> 60);
-    t[LO_IDX] <<= 4;
-    t[LO_IDX] |= (sgn & 0xF);
+    t->VsrD(0) <<= 4;
+    t->VsrD(0) |= (t->VsrD(1) >> 60);
+    t->VsrD(1) <<= 4;
+    t->VsrD(1) |= (sgn & 0xF);
 }
 
 #define DFP_HELPER_DEDPD(op, size)                                        \
@@ -1081,7 +1074,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b,          \
     N = dfp.b.digits;                                                     \
                                                                           \
     for (i = 0; (i < N) && (i < (size)/4); i++) {                         \
-        dfp_set_bcd_digit_##size(&dfp.vt.u64[0], digits[N - i - 1], i);   \
+        dfp_set_bcd_digit_##size(&dfp.vt, digits[N - i - 1], i);          \
     }                                                                     \
                                                                           \
     if (sp & 2) {                                                         \
@@ -1092,7 +1085,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b,          \
         } else {                                                          \
             sgn = ((sp & 1) ? 0xF : 0xC);                                 \
         }                                                                 \
-        dfp_set_sign_##size(&dfp.vt.u64[0], sgn);                         \
+        dfp_set_sign_##size(&dfp.vt, sgn);                                \
     }                                                                     \
                                                                           \
     if (size == 64) {                                                     \
@@ -1105,14 +1098,14 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b,          \
 DFP_HELPER_DEDPD(ddedpd, 64)
 DFP_HELPER_DEDPD(ddedpdq, 128)
 
-static inline uint8_t dfp_get_bcd_digit_64(uint64_t *t, unsigned n)
+static inline uint8_t dfp_get_bcd_digit_64(ppc_vsr_t *t, unsigned n)
 {
-    return *t >> ((n << 2) & 63) & 15;
+    return t->VsrD(1) >> ((n << 2) & 63) & 15;
 }
 
-static inline uint8_t dfp_get_bcd_digit_128(uint64_t *t, unsigned n)
+static inline uint8_t dfp_get_bcd_digit_128(ppc_vsr_t *t, unsigned n)
 {
-    return t[(n & 0x10) ? HI_IDX : LO_IDX] >> ((n << 2) & 63) & 15;
+    return t->VsrD((n & 0x10) ? 0 : 1) >> ((n << 2) & 63) & 15;
 }
 
 #define DFP_HELPER_ENBCD(op, size)                                           \
@@ -1128,8 +1121,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b,             \
     decNumberZero(&dfp.t);                                                   \
                                                                              \
     if (s) {                                                                 \
-        uint8_t sgnNibble = dfp_get_bcd_digit_##size(&dfp.vb.u64[0],         \
-                                                     offset++);              \
+        uint8_t sgnNibble = dfp_get_bcd_digit_##size(&dfp.vb, offset++);     \
         switch (sgnNibble) {                                                 \
         case 0xD:                                                            \
         case 0xB:                                                            \
@@ -1149,7 +1141,7 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b,             \
                                                                              \
     while (offset < (size) / 4) {                                            \
         n++;                                                                 \
-        digits[(size) / 4 - n] = dfp_get_bcd_digit_##size(&dfp.vb.u64[0],    \
+        digits[(size) / 4 - n] = dfp_get_bcd_digit_##size(&dfp.vb,           \
                                                           offset++);         \
         if (digits[(size) / 4 - n] > 10) {                                   \
             dfp_set_FPSCR_flag(&dfp, FP_VX | FP_VXCVI, FPSCR_VE);            \
@@ -1212,16 +1204,16 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b) \
 DFP_HELPER_XEX(dxex, 64)
 DFP_HELPER_XEX(dxexq, 128)
 
-static void dfp_set_raw_exp_64(uint64_t *t, uint64_t raw)
+static void dfp_set_raw_exp_64(ppc_vsr_t *t, uint64_t raw)
 {
-    *t &= 0x8003ffffffffffffULL;
-    *t |= (raw << (63 - 13));
+    t->VsrD(1) &= 0x8003ffffffffffffULL;
+    t->VsrD(1) |= (raw << (63 - 13));
 }
 
-static void dfp_set_raw_exp_128(uint64_t *t, uint64_t raw)
+static void dfp_set_raw_exp_128(ppc_vsr_t *t, uint64_t raw)
 {
-    t[HI_IDX] &= 0x80003fffffffffffULL;
-    t[HI_IDX] |= (raw << (63 - 17));
+    t->VsrD(0) &= 0x80003fffffffffffULL;
+    t->VsrD(0) |= (raw << (63 - 17));
 }
 
 #define DFP_HELPER_IEX(op, size)                                          \
@@ -1258,11 +1250,11 @@ void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *a,          \
         dfp.vt.VsrD(0) = dfp.vb.VsrD(0);                                  \
         dfp.vt.VsrD(1) = dfp.vb.VsrD(1);                                  \
         if (exp == -1) {                                                  \
-            dfp_set_raw_exp_##size(&dfp.vt.u64[0], raw_inf);              \
+            dfp_set_raw_exp_##size(&dfp.vt, raw_inf);                     \
         } else if (exp == -3) {                                           \
-            dfp_set_raw_exp_##size(&dfp.vt.u64[0], raw_snan);             \
+            dfp_set_raw_exp_##size(&dfp.vt, raw_snan);                    \
         } else {                                                          \
-            dfp_set_raw_exp_##size(&dfp.vt.u64[0], raw_qnan);             \
+            dfp_set_raw_exp_##size(&dfp.vt, raw_qnan);                    \
         }                                                                 \
     } else {                                                              \
         dfp.t = dfp.b;                                                    \
-- 
2.21.0



  parent reply	other threads:[~2019-10-04 10:04 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-04  9:36 [PULL 00/53] ppc-for-4.2 queue 20191004 David Gibson
2019-10-04  9:36 ` [PULL 01/53] pseries: do not allow memory-less/cpu-less NUMA node David Gibson
2019-10-04  9:36 ` [PULL 02/53] ppc/pnv: fix "bmc" node name in DT David Gibson
2019-10-04  9:36 ` [PULL 03/53] spapr-tpm-proxy: Drop misleading check David Gibson
2019-10-04  9:36 ` [PULL 04/53] hw/ppc/pnv: fix checkpatch.pl coding style warnings David Gibson
2019-10-04  9:36 ` [PULL 05/53] spapr: Report kvm_irqchip_in_kernel() in 'info pic' David Gibson
2019-10-04  9:37 ` [PULL 06/53] hw/ppc/pnv_xscom: retrieve homer/occ base address from PBA BARs David Gibson
2019-10-04  9:37 ` [PULL 07/53] hw/ppc/pnv_occ: add sram device model for occ common area David Gibson
2019-10-04  9:37 ` [PULL 08/53] hw/ppc/pnv_homer: add PowerNV homer device model David Gibson
2019-10-04  9:37 ` [PULL 09/53] spapr/irq: Introduce an ics_irq_free() helper David Gibson
2019-10-04  9:37 ` [PULL 10/53] spapr/irq: Only claim VALID interrupts at the KVM level David Gibson
2019-10-04  9:37 ` [PULL 11/53] ppc: Add support for 'mffscrn','mffscrni' instructions David Gibson
2019-10-04  9:37 ` [PULL 12/53] ppc: Add support for 'mffsce' instruction David Gibson
2019-10-04  9:37 ` [PULL 13/53] ppc: Use FPSCR defines instead of constants David Gibson
2019-10-04  9:37 ` [PULL 14/53] ppc/kvm: Skip writing DPDES back when in run time state David Gibson
2019-10-04  9:37 ` [PULL 15/53] spapr: Simplify handling of pre ISA 3.0 guest workaround handling David Gibson
2019-10-04  9:37 ` [PULL 16/53] spapr: Move handling of special NVLink numa node from reset to init David Gibson
2019-10-04  9:37 ` [PULL 17/53] spapr: Fixes a leak in CAS David Gibson
2019-10-04  9:37 ` [PULL 18/53] spapr: Skip leading zeroes from memory@ DT node names David Gibson
2019-10-04  9:37 ` [PULL 19/53] spapr: Do not put empty properties for -kernel/-initrd/-append David Gibson
2019-10-04  9:37 ` [PULL 20/53] spapr: Stop providing RTAS blob David Gibson
2019-10-04  9:37 ` [PULL 21/53] pseries: Update SLOF firmware image David Gibson
2019-10-04  9:37 ` [PULL 22/53] target/ppc: introduce get_dfp{64, 128}() helper functions David Gibson
2019-10-04  9:37 ` [PULL 23/53] target/ppc: introduce set_dfp{64, " David Gibson
2019-10-04  9:37 ` [PULL 24/53] target/ppc: update {get, set}_dfp{64, 128}() helper functions to read/write DFP numbers correctly David Gibson
2019-10-04  9:37 ` [PULL 25/53] target/ppc: introduce dfp_finalize_decimal{64, 128}() helper functions David Gibson
2019-10-04  9:37 ` [PULL 26/53] target/ppc: change struct PPC_DFP decimal storage from uint64[2] to ppc_vsr_t David Gibson
2019-10-04  9:37 ` David Gibson [this message]
2019-10-04  9:37 ` [PULL 28/53] target/ppc: remove unnecessary if() around calls to set_dfp{64, 128}() in DFP macros David Gibson
2019-10-04  9:37 ` [PULL 29/53] spapr-pci: Stop providing assigned-addresses David Gibson
2019-10-04  9:37 ` [PULL 30/53] spapr: Render full FDT on ibm, client-architecture-support David Gibson
2019-12-03 16:11   ` [PULL 30/53] spapr: Render full FDT on ibm,client-architecture-support Laurent Vivier
2019-10-04  9:37 ` [PULL 31/53] target/ppc: use Vsr macros in BCD helpers David Gibson
2019-10-04  9:37 ` [PULL 32/53] spapr/xive: skip partially initialized vCPUs in presenter David Gibson
2019-10-04  9:37 ` [PULL 33/53] xics: Minor fixes for XICSFabric interface David Gibson
2019-10-04  9:37 ` [PULL 34/53] xics: Eliminate 'reject', 'resend' and 'eoi' class hooks David Gibson
2019-10-04  9:37 ` [PULL 35/53] xics: Rename misleading ics_simple_*() functions David Gibson
2019-10-04  9:37 ` [PULL 36/53] xics: Eliminate reset hook David Gibson
2019-10-04  9:37 ` [PULL 37/53] xics: Merge TYPE_ICS_BASE and TYPE_ICS_SIMPLE classes David Gibson
2019-10-04  9:37 ` [PULL 38/53] xics: Create sPAPR specific ICS subtype David Gibson
2019-10-04  9:37 ` [PULL 39/53] spapr: Fold spapr_phb_lsi_qirq() into its single caller David Gibson
2019-10-04  9:37 ` [PULL 40/53] spapr: Replace spapr_vio_qirq() helper with spapr_vio_irq_pulse() helper David Gibson
2019-10-04  9:37 ` [PULL 41/53] spapr: Clarify and fix handling of nr_irqs David Gibson
2019-10-04  9:37 ` [PULL 42/53] spapr: Eliminate nr_irqs parameter to SpaprIrq::init David Gibson
2019-10-04  9:37 ` [PULL 43/53] spapr: Fix indexing of XICS irqs David Gibson
2019-10-04  9:37 ` [PULL 44/53] spapr: Simplify spapr_qirq() handling David Gibson
2019-10-04  9:37 ` [PULL 45/53] spapr: Eliminate SpaprIrq:get_nodename method David Gibson
2019-10-04  9:37 ` [PULL 46/53] spapr: Remove unhelpful tracepoints from spapr_irq_free_xics() David Gibson
2019-10-04  9:37 ` [PULL 47/53] spapr: Handle freeing of multiple irqs in frontend only David Gibson
2019-10-04  9:37 ` [PULL 48/53] spapr, xics, xive: Better use of assert()s on irq claim/free paths David Gibson
2019-10-04  9:37 ` [PULL 49/53] xive: Improve irq claim/free path David Gibson
2019-10-04  9:37 ` [PULL 50/53] spapr: Use less cryptic representation of which irq backends are supported David Gibson
2019-10-04  9:37 ` [PULL 51/53] spapr: Add return value to spapr_irq_check() David Gibson
2019-10-04  9:37 ` [PULL 52/53] spapr: Eliminate SpaprIrq::init hook David Gibson
2019-10-04  9:37 ` [PULL 53/53] ppc/pnv: Remove the XICSFabric Interface from the POWER9 machine David Gibson
2019-10-07 14:40 ` [PULL 00/53] ppc-for-4.2 queue 20191004 Peter Maydell

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