* [PATCH 0/7] MIPS: LLVM build fixes
@ 2023-04-09 10:43 Jiaxun Yang
2023-04-09 10:43 ` [PATCH 1/8] MIPS: Replace assembly isa level directives with macros Jiaxun Yang
` (8 more replies)
0 siblings, 9 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
Hi all,
This series fixes some build errors when building with LLVM.
Some of them was discorved by inspecting the tree.
Tested with LLVM + LLVM_IAS={0, 1} and GCC against:
allnoconfig, allmodconfig, 32r2_defconfig, 32r2el_defconfig, 64r2_defconfig,
64r2el_defconfig, micro32r2el_defconfig, 32r6el_defconfig, 64r6el_defconfig,
loongson3_defconfig, lemote2f_defconfig, ip22_defconfig, cavium_octeon_defconfig,
malta_defconfig
With other patchsets [1] [2] [3] I sent before, on my CI [4], with tree [5].
allmodconfig is still failing but it's not related to MIPS.
[1]: https://patchwork.kernel.org/project/linux-mips/patch/20230407102721.14814-2-jiaxun.yang@flygoat.com/
[2]: https://patchwork.kernel.org/project/linux-mips/patch/20230408115936.6631-1-jiaxun.yang@flygoat.com/
[3]: https://patchwork.kernel.org/project/linux-mips/patch/20230407102721.14814-2-jiaxun.yang@flygoat.com/
[4]: https://github.com/FlyGoat/kernel-action-ci/actions/runs/4649898964/jobs/8228560848
[5]: https://github.com/FlyGoat/kernel-action-ci/tree/71d3f53e9c44cebf62cfa4ed7ec3b0ce6452555f
Thanks
Jiaxun
Jiaxun Yang (8):
MIPS: Replace assembly isa level directives with macros
MIPS: Set ISA level for MSA control reg helpers
MIPS: loongson2ef: Add missing break in cs5536_isa
MIPS: asmmacro: Restore fp macro after undef
MIPS: mipsregs: Parse fp and sp register by name in parse_r
MIPS: c-r4k: Use cache_op function for rm7k_erratum31
MIPS: octeon_switch: Remove duplicated labels
MIPS: Implement microMIPS MT ASE helpers
arch/mips/alchemy/common/sleeper.S | 6 +-
arch/mips/include/asm/asmmacro.h | 57 ++--
arch/mips/include/asm/futex.h | 8 +-
arch/mips/include/asm/hazards.h | 2 +-
arch/mips/include/asm/io.h | 4 +-
arch/mips/include/asm/mipsmtregs.h | 256 +++++++++++-------
arch/mips/include/asm/mipsregs.h | 63 +++--
arch/mips/include/asm/msa.h | 2 +
arch/mips/include/asm/stackframe.h | 2 +-
arch/mips/kernel/bmips_vec.S | 4 +-
arch/mips/kernel/csrc-r4k.c | 2 +-
arch/mips/kernel/genex.S | 8 +-
arch/mips/kernel/idle.c | 6 +-
arch/mips/kernel/octeon_switch.S | 6 -
arch/mips/kernel/r4k_fpu.S | 4 +-
arch/mips/kernel/syscall.c | 2 +-
arch/mips/lantiq/clk.c | 2 +-
arch/mips/lib/csum_partial.S | 5 +-
.../loongson2ef/common/cs5536/cs5536_isa.c | 2 +-
arch/mips/mm/c-r4k.c | 33 +--
arch/mips/mm/cex-oct.S | 2 +-
arch/mips/mm/sc-ip22.c | 6 +-
22 files changed, 277 insertions(+), 205 deletions(-)
--
2.39.2 (Apple Git-143)
^ permalink raw reply [flat|nested] 21+ messages in thread
* [PATCH 1/8] MIPS: Replace assembly isa level directives with macros
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-20 16:43 ` Nick Desaulniers
2023-04-09 10:43 ` [PATCH 2/8] MIPS: Set ISA level for MSA control reg helpers Jiaxun Yang
` (7 subsequent siblings)
8 siblings, 1 reply; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
There are tons of .set assembly isa level directives in tree
to set current isa level to a higher level to enable some features.
However as nowadays MIPS is shuffling around opcodes, a single ISA
level setting may result wrong opcode in binary. We had MIPS_ISA_LEVEL
macros to determine most appropriate superset of ISA level, just do a
tree wide replacement to take advantage of those macros.
Mapping:
arch=r4000 -> MIPS_ISA_ARCH_LEVEL
{mips1, mips3, mips32r2, mips64r2} -> MIPS_ISA_LEVEL
{mips32r5, mips64r5} -> Special case for VZ, mips64r5 if target ISA
is lower than R5, otherwise MIPS_ISA_LEVEL
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/alchemy/common/sleeper.S | 6 ++--
arch/mips/include/asm/asmmacro.h | 32 ++++++++++----------
arch/mips/include/asm/futex.h | 8 ++---
arch/mips/include/asm/hazards.h | 2 +-
arch/mips/include/asm/io.h | 4 +--
arch/mips/include/asm/mipsmtregs.h | 18 ++++++------
arch/mips/include/asm/mipsregs.h | 47 +++++++++++++++++-------------
arch/mips/include/asm/stackframe.h | 2 +-
arch/mips/kernel/bmips_vec.S | 4 +--
arch/mips/kernel/csrc-r4k.c | 2 +-
arch/mips/kernel/genex.S | 8 ++---
arch/mips/kernel/idle.c | 6 ++--
arch/mips/kernel/r4k_fpu.S | 4 +--
arch/mips/kernel/syscall.c | 2 +-
arch/mips/lantiq/clk.c | 2 +-
arch/mips/lib/csum_partial.S | 5 ++--
arch/mips/mm/c-r4k.c | 2 +-
arch/mips/mm/cex-oct.S | 2 +-
arch/mips/mm/sc-ip22.c | 6 ++--
19 files changed, 85 insertions(+), 77 deletions(-)
diff --git a/arch/mips/alchemy/common/sleeper.S b/arch/mips/alchemy/common/sleeper.S
index 13586d224314..e19f20223aac 100644
--- a/arch/mips/alchemy/common/sleeper.S
+++ b/arch/mips/alchemy/common/sleeper.S
@@ -91,7 +91,7 @@ LEAF(alchemy_sleep_au1000)
/* cache following instructions, as memory gets put to sleep */
la t0, 1f
- .set arch=r4000
+ .set MIPS_ISA_ARCH_LEVEL_RAW
cache 0x14, 0(t0)
cache 0x14, 32(t0)
cache 0x14, 64(t0)
@@ -117,7 +117,7 @@ LEAF(alchemy_sleep_au1550)
/* cache following instructions, as memory gets put to sleep */
la t0, 1f
- .set arch=r4000
+ .set MIPS_ISA_ARCH_LEVEL_RAW
cache 0x14, 0(t0)
cache 0x14, 32(t0)
cache 0x14, 64(t0)
@@ -159,7 +159,7 @@ LEAF(alchemy_sleep_au1300)
la t1, 4f
subu t2, t1, t0
- .set arch=r4000
+ .set MIPS_ISA_ARCH_LEVEL_RAW
1: cache 0x14, 0(t0)
subu t2, t2, 32
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 74c2dedc55b4..2491a6c68390 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -107,7 +107,7 @@
.macro fpu_save_16odd thread
.set push
- .set mips64r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set hardfloat
sdc1 $f1, THREAD_FPR1(\thread)
@@ -166,7 +166,7 @@
.macro fpu_restore_16odd thread
.set push
- .set mips64r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set hardfloat
ldc1 $f1, THREAD_FPR1(\thread)
@@ -242,7 +242,7 @@
#ifdef CONFIG_AS_HAS_MSA
.macro _cfcmsa rd, cs
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
cfcmsa \rd, $\cs
@@ -251,7 +251,7 @@
.macro _ctcmsa cd, rs
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
ctcmsa $\cd, \rs
@@ -260,7 +260,7 @@
.macro ld_b wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
ld.b $w\wd, \off(\base)
@@ -269,7 +269,7 @@
.macro ld_h wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
ld.h $w\wd, \off(\base)
@@ -278,7 +278,7 @@
.macro ld_w wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
ld.w $w\wd, \off(\base)
@@ -287,7 +287,7 @@
.macro ld_d wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
ld.d $w\wd, \off(\base)
@@ -296,7 +296,7 @@
.macro st_b wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
st.b $w\wd, \off(\base)
@@ -305,7 +305,7 @@
.macro st_h wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
st.h $w\wd, \off(\base)
@@ -314,7 +314,7 @@
.macro st_w wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
st.w $w\wd, \off(\base)
@@ -323,7 +323,7 @@
.macro st_d wd, off, base
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
st.d $w\wd, \off(\base)
@@ -332,7 +332,7 @@
.macro copy_s_w ws, n
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
copy_s.w $1, $w\ws[\n]
@@ -341,7 +341,7 @@
.macro copy_s_d ws, n
.set push
- .set mips64r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
copy_s.d $1, $w\ws[\n]
@@ -350,7 +350,7 @@
.macro insert_w wd, n
.set push
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
insert.w $w\wd[\n], $1
@@ -359,7 +359,7 @@
.macro insert_d wd, n
.set push
- .set mips64r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
.set msa
insert.d $w\wd[\n], $1
diff --git a/arch/mips/include/asm/futex.h b/arch/mips/include/asm/futex.h
index 05832eb240fa..2107e536a308 100644
--- a/arch/mips/include/asm/futex.h
+++ b/arch/mips/include/asm/futex.h
@@ -29,11 +29,11 @@
" .set push \n" \
" .set noat \n" \
" .set push \n" \
- " .set arch=r4000 \n" \
+ " .set "MIPS_ISA_ARCH_LEVEL" \n" \
"1: ll %1, %4 # __futex_atomic_op \n" \
" .set pop \n" \
" " insn " \n" \
- " .set arch=r4000 \n" \
+ " .set "MIPS_ISA_ARCH_LEVEL" \n" \
"2: sc $1, %2 \n" \
" beqzl $1, 1b \n" \
__stringify(__WEAK_LLSC_MB) " \n" \
@@ -144,12 +144,12 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
" .set push \n"
" .set noat \n"
" .set push \n"
- " .set arch=r4000 \n"
+ " .set "MIPS_ISA_ARCH_LEVEL" \n"
"1: ll %1, %3 \n"
" bne %1, %z4, 3f \n"
" .set pop \n"
" move $1, %z5 \n"
- " .set arch=r4000 \n"
+ " .set "MIPS_ISA_ARCH_LEVEL" \n"
"2: sc $1, %2 \n"
" beqzl $1, 1b \n"
__stringify(__WEAK_LLSC_MB) " \n"
diff --git a/arch/mips/include/asm/hazards.h b/arch/mips/include/asm/hazards.h
index cb16be93b048..ca18c66530e8 100644
--- a/arch/mips/include/asm/hazards.h
+++ b/arch/mips/include/asm/hazards.h
@@ -144,7 +144,7 @@ do { \
\
__asm__ __volatile__( \
" .set push \n" \
- " .set mips64r2 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
" dla %0, 1f \n" \
" jr.hb %0 \n" \
" .set pop \n" \
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index cc28d207a061..e2ec7ec3dc20 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -243,7 +243,7 @@ static inline void pfx##write##bwlq(type val, \
local_irq_save(__flags); \
__asm__ __volatile__( \
".set push" "\t\t# __writeq""\n\t" \
- ".set arch=r4000" "\n\t" \
+ ".set "MIPS_ISA_ARCH_LEVEL "\n\t" \
"dsll32 %L0, %L0, 0" "\n\t" \
"dsrl32 %L0, %L0, 0" "\n\t" \
"dsll32 %M0, %M0, 0" "\n\t" \
@@ -277,7 +277,7 @@ static inline type pfx##read##bwlq(const volatile void __iomem *mem) \
local_irq_save(__flags); \
__asm__ __volatile__( \
".set push" "\t\t# __readq" "\n\t" \
- ".set arch=r4000" "\n\t" \
+ ".set "MIPS_ISA_ARCH_LEVEL "\n\t" \
"ld %L0, %1" "\n\t" \
"dsra32 %M0, %L0, 0" "\n\t" \
"sll %L0, %L0, 0" "\n\t" \
diff --git a/arch/mips/include/asm/mipsmtregs.h b/arch/mips/include/asm/mipsmtregs.h
index a8d67c2f4f7b..b6dea86b1b82 100644
--- a/arch/mips/include/asm/mipsmtregs.h
+++ b/arch/mips/include/asm/mipsmtregs.h
@@ -197,7 +197,7 @@ static inline unsigned int dvpe(void)
" .set push \n"
" .set noreorder \n"
" .set noat \n"
- " .set mips32r2 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" .word 0x41610001 # dvpe $1 \n"
" move %0, $1 \n"
" ehb \n"
@@ -215,7 +215,7 @@ static inline void __raw_evpe(void)
" .set push \n"
" .set noreorder \n"
" .set noat \n"
- " .set mips32r2 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" .word 0x41600021 # evpe \n"
" ehb \n"
" .set pop \n");
@@ -238,7 +238,7 @@ static inline unsigned int dmt(void)
__asm__ __volatile__(
" .set push \n"
- " .set mips32r2 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" .set noat \n"
" .word 0x41610BC1 # dmt $1 \n"
" ehb \n"
@@ -256,7 +256,7 @@ static inline void __raw_emt(void)
__asm__ __volatile__(
" .set push \n"
" .set noreorder \n"
- " .set mips32r2 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" .word 0x41600be1 # emt \n"
" ehb \n"
" .set pop");
@@ -277,7 +277,7 @@ static inline void ehb(void)
{
__asm__ __volatile__(
" .set push \n"
- " .set mips32r2 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" ehb \n"
" .set pop \n");
}
@@ -288,7 +288,7 @@ static inline void ehb(void)
\
__asm__ __volatile__( \
" .set push \n" \
- " .set mips32r2 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
" .set noat \n" \
" # mftc0 $1, $" #rt ", " #sel " \n" \
" .word 0x41000800 | (" #rt " << 16) | " #sel " \n" \
@@ -306,7 +306,7 @@ static inline void ehb(void)
__asm__ __volatile__( \
" .set push \n" \
" .set noat \n" \
- " .set mips32r2 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
" # mftgpr $1," #rt " \n" \
" .word 0x41000820 | (" #rt " << 16) \n" \
" move %0, $1 \n" \
@@ -331,7 +331,7 @@ static inline void ehb(void)
do { \
__asm__ __volatile__( \
" .set push \n" \
- " .set mips32r2 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
" .set noat \n" \
" move $1, %0 \n" \
" # mttgpr $1, " #rd " \n" \
@@ -344,7 +344,7 @@ do { \
({ \
__asm__ __volatile__( \
" .set push \n" \
- " .set mips32r2 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
" .set noat \n" \
" move $1, %0 \n" \
" # mttc0 %0," #rd ", " #sel " \n" \
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 8f0ebc399338..9d928b952abf 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -1421,7 +1421,7 @@ do { \
else \
__asm__ vol( \
".set\tpush\n\t" \
- ".set\tmips32\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"mfc0\t%0, " #source ", " #sel "\n\t" \
".set\tpop\n\t" \
: "=r" (__res)); \
@@ -1435,14 +1435,14 @@ do { \
else if (sel == 0) \
__asm__ vol( \
".set\tpush\n\t" \
- ".set\tmips3\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dmfc0\t%0, " #source "\n\t" \
".set\tpop" \
: "=r" (__res)); \
else \
__asm__ vol( \
".set\tpush\n\t" \
- ".set\tmips64\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dmfc0\t%0, " #source ", " #sel "\n\t" \
".set\tpop" \
: "=r" (__res)); \
@@ -1470,7 +1470,7 @@ do { \
else \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips32\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"mtc0\t%z0, " #register ", " #sel "\n\t" \
".set\tpop" \
: : "Jr" ((unsigned int)(value))); \
@@ -1483,14 +1483,14 @@ do { \
else if (sel == 0) \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips3\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dmtc0\t%z0, " #register "\n\t" \
".set\tpop" \
: : "Jr" (value)); \
else \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips64\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dmtc0\t%z0, " #register ", " #sel "\n\t" \
".set\tpop" \
: : "Jr" (value)); \
@@ -1545,7 +1545,7 @@ do { \
if (sel == 0) \
__asm__ vol( \
".set\tpush\n\t" \
- ".set\tmips64\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dmfc0\t%L0, " #source "\n\t" \
"dsra\t%M0, %L0, 32\n\t" \
"sll\t%L0, %L0, 0\n\t" \
@@ -1554,7 +1554,7 @@ do { \
else \
__asm__ vol( \
".set\tpush\n\t" \
- ".set\tmips64\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dmfc0\t%L0, " #source ", " #sel "\n\t" \
"dsra\t%M0, %L0, 32\n\t" \
"sll\t%L0, %L0, 0\n\t" \
@@ -1582,7 +1582,7 @@ do { \
else if (sel == 0) \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips64\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dsll\t%L0, %L0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsll\t%M0, %M0, 32\n\t" \
@@ -1593,7 +1593,7 @@ do { \
else \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips64\n\t" \
+ ".set\t "MIPS_ISA_LEVEL" \n\t" \
"dsll\t%L0, %L0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsll\t%M0, %M0, 32\n\t" \
@@ -1628,7 +1628,7 @@ do { \
\
__asm__ __volatile__( \
" .set push \n" \
- " .set mips32r2 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
_ASM_SET_MFHC0 \
" mfhc0 %0, " #source ", %1 \n" \
_ASM_UNSET_MFHC0 \
@@ -1642,7 +1642,7 @@ do { \
do { \
__asm__ __volatile__( \
" .set push \n" \
- " .set mips32r2 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
_ASM_SET_MTHC0 \
" mthc0 %z0, " #register ", %1 \n" \
_ASM_UNSET_MTHC0 \
@@ -2040,7 +2040,14 @@ do { \
* Macros to access the guest system control coprocessor
*/
-#ifndef CONFIG_AS_HAS_VIRT
+#if MIPS_ISA_REV < 5
+/* VZ ASE should be able to work with Release 2 but LLVM thinks it needs R5 */
+#define MIPS_ISA_LEVEL_VIRT "mips64r5"
+#else
+#define MIPS_ISA_LEVEL_VIRT MIPS_ISA_LEVEL
+#endif
+
+#ifndef TOOLCHAIN_SUPPORTS_VIRT
#define _ASM_SET_MFGC0 \
_ASM_MACRO_2R_1S(mfgc0, rt, rs, sel, \
_ASM_INSN_IF_MIPS(0x40600000 | __rt << 16 | __rs << 11 | \\sel) \
@@ -2099,7 +2106,7 @@ do { \
({ int __res; \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips32r5\n\t" \
+ ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
_ASM_SET_MFGC0 \
"mfgc0\t%0, " #source ", %1\n\t" \
_ASM_UNSET_MFGC0 \
@@ -2113,7 +2120,7 @@ do { \
({ unsigned long long __res; \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips64r5\n\t" \
+ ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
_ASM_SET_DMFGC0 \
"dmfgc0\t%0, " #source ", %1\n\t" \
_ASM_UNSET_DMFGC0 \
@@ -2127,7 +2134,7 @@ do { \
do { \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips32r5\n\t" \
+ ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
_ASM_SET_MTGC0 \
"mtgc0\t%z0, " #register ", %1\n\t" \
_ASM_UNSET_MTGC0 \
@@ -2140,7 +2147,7 @@ do { \
do { \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips64r5\n\t" \
+ ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
_ASM_SET_DMTGC0 \
"dmtgc0\t%z0, " #register ", %1\n\t" \
_ASM_UNSET_DMTGC0 \
@@ -2376,7 +2383,7 @@ do { \
" .set reorder \n" \
" # gas fails to assemble cfc1 for some archs, \n" \
" # like Octeon. \n" \
- " .set mips1 \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
" .set hardfloat \n" \
" cfc1 %0,"STR(source)" \n" \
" .set pop \n" \
@@ -2748,7 +2755,7 @@ static inline void tlb_read(void)
" .set push \n"
" .set noreorder \n"
" .set noat \n"
- " .set mips32r2 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" .word 0x41610001 # dvpe $1 \n"
" move %0, $1 \n"
" ehb \n"
@@ -2769,7 +2776,7 @@ static inline void tlb_read(void)
" .set push \n"
" .set noreorder \n"
" .set noat \n"
- " .set mips32r2 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" .word 0x41600021 # evpe \n"
" ehb \n"
" .set pop \n");
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index a8705aef47e1..5b3d374f43e0 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -428,7 +428,7 @@
eretnc
#else
.set push
- .set arch=r4000
+ .set MIPS_ISA_ARCH_LEVEL_RAW
eret
.set pop
#endif
diff --git a/arch/mips/kernel/bmips_vec.S b/arch/mips/kernel/bmips_vec.S
index 921a5fa55da6..f92a4b216da8 100644
--- a/arch/mips/kernel/bmips_vec.S
+++ b/arch/mips/kernel/bmips_vec.S
@@ -21,7 +21,7 @@
#include <asm/bmips.h>
.macro BARRIER
- .set mips32
+ .set MIPS_ISA_LEVEL_RAW
_ssnop
_ssnop
_ssnop
@@ -123,7 +123,7 @@ NESTED(bmips_reset_nmi_vec, PT_SIZE, sp)
jr k0
RESTORE_ALL
- .set arch=r4000
+ .set MIPS_ISA_ARCH_LEVEL_RAW
eret
#ifdef CONFIG_SMP
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
index edc4afc080fa..906fa1a78f7f 100644
--- a/arch/mips/kernel/csrc-r4k.c
+++ b/arch/mips/kernel/csrc-r4k.c
@@ -35,7 +35,7 @@ static inline unsigned int rdhwr_count(void)
__asm__ __volatile__(
" .set push\n"
- " .set mips32r2\n"
+ " .set "MIPS_ISA_LEVEL"\n"
" rdhwr %0, $2\n"
" .set pop\n"
: "=r" (count));
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index b6de8e88c1bd..2268304ae70e 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -50,7 +50,7 @@ NESTED(except_vec3_generic, 0, sp)
*/
NESTED(except_vec3_r4000, 0, sp)
.set push
- .set arch=r4000
+ .set MIPS_ISA_ARCH_LEVEL_RAW
.set noat
mfc0 k1, CP0_CAUSE
li k0, 31<<2
@@ -403,7 +403,7 @@ NESTED(ejtag_debug_handler, PT_SIZE, sp)
ejtag_return:
back_to_back_c0_hazard
MFC0 k0, CP0_DESAVE
- .set mips32
+ .set MIPS_ISA_LEVEL_RAW
deret
.set pop
END(ejtag_debug_handler)
@@ -503,7 +503,7 @@ NESTED(nmi_handler, PT_SIZE, sp)
* We need to specify a selector to access the CP0.Diag1 (GSCause)
* register. All GSExc-equipped processors have MIPS32.
*/
- .set mips32
+ .set MIPS_ISA_LEVEL_RAW
mfc0 a1, CP0_DIAGNOSTIC1
.set pop
TRACE_IRQS_ON
@@ -665,7 +665,7 @@ isrdhwr:
xori k1, _THREAD_MASK
LONG_L v1, TI_TP_VALUE(k1)
.set push
- .set arch=r4000
+ .set MIPS_ISA_ARCH_LEVEL_RAW
eret
.set pop
#endif
diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index 5abc8b7340f8..541470be5ec6 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -54,7 +54,7 @@ void __cpuidle r4k_wait_irqoff(void)
if (!need_resched())
__asm__(
" .set push \n"
- " .set arch=r4000 \n"
+ " .set "MIPS_ISA_ARCH_LEVEL"\n"
" wait \n"
" .set pop \n");
}
@@ -68,7 +68,7 @@ static void __cpuidle rm7k_wait_irqoff(void)
if (!need_resched())
__asm__(
" .set push \n"
- " .set arch=r4000 \n"
+ " .set "MIPS_ISA_ARCH_LEVEL" \n"
" .set noat \n"
" mfc0 $1, $12 \n"
" sync \n"
@@ -89,7 +89,7 @@ static void __cpuidle au1k_wait(void)
__asm__(
" .set push \n"
- " .set arch=r4000 \n"
+ " .set "MIPS_ISA_ARCH_LEVEL" \n"
" cache 0x14, 0(%0) \n"
" cache 0x14, 32(%0) \n"
" sync \n"
diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S
index 4e8c98517d9d..ec508ff455f2 100644
--- a/arch/mips/kernel/r4k_fpu.S
+++ b/arch/mips/kernel/r4k_fpu.S
@@ -107,7 +107,7 @@ LEAF(_save_fp_context)
.set push
.set hardfloat
#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5)
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
mfc0 t0, CP0_STATUS
sll t0, t0, 5
@@ -175,7 +175,7 @@ LEAF(_restore_fp_context)
.set push
.set hardfloat
#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5)
- .set mips32r2
+ .set MIPS_ISA_LEVEL_RAW
.set fp=64
mfc0 t0, CP0_STATUS
sll t0, t0, 5
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index ae93a607ddf7..7f2be5912997 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -109,7 +109,7 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
if (cpu_has_llsc && IS_ENABLED(CONFIG_WAR_R10000_LLSC)) {
__asm__ __volatile__ (
" .set push \n"
- " .set arch=r4000 \n"
+ " .set "MIPS_ISA_ARCH_LEVEL" \n"
" li %[err], 0 \n"
"1: ll %[old], (%[addr]) \n"
" move %[tmp], %[new] \n"
diff --git a/arch/mips/lantiq/clk.c b/arch/mips/lantiq/clk.c
index 2d5a0bcb0cec..81e3329fc5de 100644
--- a/arch/mips/lantiq/clk.c
+++ b/arch/mips/lantiq/clk.c
@@ -177,7 +177,7 @@ static inline u32 get_counter_resolution(void)
__asm__ __volatile__(
".set push\n"
- ".set mips32r2\n"
+ ".set "MIPS_ISA_LEVEL"\n"
"rdhwr %0, $3\n"
".set pop\n"
: "=&r" (res)
diff --git a/arch/mips/lib/csum_partial.S b/arch/mips/lib/csum_partial.S
index 7767137c3e49..4b1060c3494b 100644
--- a/arch/mips/lib/csum_partial.S
+++ b/arch/mips/lib/csum_partial.S
@@ -13,6 +13,7 @@
#include <linux/errno.h>
#include <asm/asm.h>
#include <asm/asm-offsets.h>
+#include <asm/compiler.h>
#include <asm/export.h>
#include <asm/regdef.h>
@@ -282,7 +283,7 @@ EXPORT_SYMBOL(csum_partial)
#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \
defined(CONFIG_CPU_LOONGSON64)
.set push
- .set arch=mips32r2
+ .set MIPS_ISA_LEVEL_RAW
wsbh v1, sum
movn sum, v1, t7
.set pop
@@ -707,7 +708,7 @@ EXPORT_SYMBOL(csum_partial)
#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \
defined(CONFIG_CPU_LOONGSON64)
.set push
- .set arch=mips32r2
+ .set MIPS_ISA_LEVEL_RAW
wsbh v1, sum
movn sum, v1, odd
.set pop
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 4b6554b48923..420440cc40b1 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -918,7 +918,7 @@ static inline void rm7k_erratum31(void)
__asm__ __volatile__ (
".set push\n\t"
".set noreorder\n\t"
- ".set mips3\n\t"
+ ".set "MIPS_ISA_LEVEL"\n\t"
"cache\t%1, 0(%0)\n\t"
"cache\t%1, 0x1000(%0)\n\t"
"cache\t%1, 0x2000(%0)\n\t"
diff --git a/arch/mips/mm/cex-oct.S b/arch/mips/mm/cex-oct.S
index 9029092aa740..bb9f6b960786 100644
--- a/arch/mips/mm/cex-oct.S
+++ b/arch/mips/mm/cex-oct.S
@@ -19,7 +19,7 @@
LEAF(except_vec2_octeon)
.set push
- .set mips64r2
+ .set MIPS_ISA_LEVEL_RAW
.set noreorder
.set noat
diff --git a/arch/mips/mm/sc-ip22.c b/arch/mips/mm/sc-ip22.c
index d7238687d790..9a0c29946c2d 100644
--- a/arch/mips/mm/sc-ip22.c
+++ b/arch/mips/mm/sc-ip22.c
@@ -33,7 +33,7 @@ static inline void indy_sc_wipe(unsigned long first, unsigned long last)
__asm__ __volatile__(
" .set push # indy_sc_wipe \n"
" .set noreorder \n"
- " .set mips3 \n"
+ " .set "MIPS_ISA_LEVEL" \n"
" .set noat \n"
" mfc0 %2, $12 \n"
" li $1, 0x80 # Go 64 bit \n"
@@ -108,7 +108,7 @@ static void indy_sc_enable(void)
__asm__ __volatile__(
".set\tpush\n\t"
".set\tnoreorder\n\t"
- ".set\tmips3\n\t"
+ ".set\t"MIPS_ISA_LEVEL"\n\t"
"mfc0\t%2, $12\n\t"
"nop; nop; nop; nop;\n\t"
"li\t%1, 0x80\n\t"
@@ -138,7 +138,7 @@ static void indy_sc_disable(void)
__asm__ __volatile__(
".set\tpush\n\t"
".set\tnoreorder\n\t"
- ".set\tmips3\n\t"
+ ".set\t"MIPS_ISA_LEVEL"\n\t"
"li\t%0, 0x1\n\t"
"dsll\t%0, 31\n\t"
"lui\t%1, 0x9000\n\t"
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 2/8] MIPS: Set ISA level for MSA control reg helpers
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
2023-04-09 10:43 ` [PATCH 1/8] MIPS: Replace assembly isa level directives with macros Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-09 10:43 ` [PATCH 3/8] MIPS: loongson2ef: Add missing break in cs5536_isa Jiaxun Yang
` (6 subsequent siblings)
8 siblings, 0 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
MSA instructions requires at least Release 2 to be available.
Setting ISA level here to make GAS happy when building kernel
for earlier CPUs.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/include/asm/msa.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/mips/include/asm/msa.h b/arch/mips/include/asm/msa.h
index a9ca57e3f780..e13e538a7889 100644
--- a/arch/mips/include/asm/msa.h
+++ b/arch/mips/include/asm/msa.h
@@ -175,10 +175,12 @@ static inline void init_msa_upper(void)
#define _ASM_UNSET_CTCMSA ".purgem ctcmsa\n\t"
#else /* CONFIG_AS_HAS_MSA */
#define _ASM_SET_CFCMSA \
+ ".set\t"MIPS_ISA_LEVEL"\n\t" \
".set\tfp=64\n\t" \
".set\tmsa\n\t"
#define _ASM_UNSET_CFCMSA
#define _ASM_SET_CTCMSA \
+ ".set\t"MIPS_ISA_LEVEL"\n\t" \
".set\tfp=64\n\t" \
".set\tmsa\n\t"
#define _ASM_UNSET_CTCMSA
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 3/8] MIPS: loongson2ef: Add missing break in cs5536_isa
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
2023-04-09 10:43 ` [PATCH 1/8] MIPS: Replace assembly isa level directives with macros Jiaxun Yang
2023-04-09 10:43 ` [PATCH 2/8] MIPS: Set ISA level for MSA control reg helpers Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-12 13:31 ` Thomas Bogendoerfer
2023-04-09 10:43 ` [PATCH 4/8] MIPS: asmmacro: Restore fp macro after undef Jiaxun Yang
` (5 subsequent siblings)
8 siblings, 1 reply; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
Fixes build error:
arch/mips/loongson2ef/common/cs5536/cs5536_isa.c:217:2: error:
unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough]
default:
^
arch/mips/loongson2ef/common/cs5536/cs5536_isa.c:217:2:
note: insert 'break;' to avoid fall-through
default:
^
break;
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/loongson2ef/common/cs5536/cs5536_isa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c b/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c
index 5ad38f86ee62..d60dd9992377 100644
--- a/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c
+++ b/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c
@@ -213,7 +213,7 @@ void pci_isa_write_reg(int reg, u32 value)
lo |= 0x00000063;
_wrmsr(SB_MSR_REG(SB_ERROR), hi, lo);
}
-
+ break;
default:
/* ALL OTHER PCI CONFIG SPACE HEADER IS NOT IMPLEMENTED. */
break;
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 4/8] MIPS: asmmacro: Restore fp macro after undef
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
` (2 preceding siblings ...)
2023-04-09 10:43 ` [PATCH 3/8] MIPS: loongson2ef: Add missing break in cs5536_isa Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-09 10:43 ` [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r Jiaxun Yang
` (4 subsequent siblings)
8 siblings, 0 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
fp macro is used by several place to reference frame pointer.
Restore macro at end of file with {push,pop}_macro pragma to
avoid break other assembly files.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/include/asm/asmmacro.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 2491a6c68390..de9688911cae 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -20,6 +20,7 @@
#endif
/* preprocessor replaces the fp in ".set fp=64" with $30 otherwise */
+#pragma push_macro("fp")
#undef fp
/*
@@ -655,4 +656,6 @@
.set pop
.endm
+#pragma pop_macro("fp")
+
#endif /* _ASM_ASMMACRO_H */
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
` (3 preceding siblings ...)
2023-04-09 10:43 ` [PATCH 4/8] MIPS: asmmacro: Restore fp macro after undef Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-21 10:48 ` Thomas Bogendoerfer
2023-04-09 10:43 ` [PATCH 6/8] MIPS: c-r4k: Use cache_op function for rm7k_erratum31 Jiaxun Yang
` (3 subsequent siblings)
8 siblings, 1 reply; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
parse_r helper is used to parse register number from oprand,
it only handles oprand which use number to refer register before.
However compiler may use $gp and $sp to reference register 29 and
30. Handle this situation by adding relevant match name.
Fixes compilation error:
{standard input}: Assembler messages:
{standard input}:1937: Error: Unable to parse register name $fp
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/include/asm/mipsregs.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 9d928b952abf..7d2c1c90fa10 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -1277,11 +1277,13 @@ static inline int mm_insn_16bit(u16 insn)
*/
/* Match an individual register number and assign to \var */
-#define _IFC_REG(n) \
- ".ifc \\r, $" #n "\n\t" \
+#define _IFC_REG_NAME(name, n) \
+ ".ifc \\r, $" #name "\n\t" \
"\\var = " #n "\n\t" \
".endif\n\t"
+#define _IFC_REG(n) _IFC_REG_NAME(n, n)
+
#define _ASM_SET_PARSE_R \
".macro parse_r var r\n\t" \
"\\var = -1\n\t" \
@@ -1293,6 +1295,7 @@ static inline int mm_insn_16bit(u16 insn)
_IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23) \
_IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27) \
_IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31) \
+ _IFC_REG_NAME(sp, 29) _IFC_REG_NAME(fp, 30) \
".iflt \\var\n\t" \
".error \"Unable to parse register name \\r\"\n\t" \
".endif\n\t" \
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 6/8] MIPS: c-r4k: Use cache_op function for rm7k_erratum31
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
` (4 preceding siblings ...)
2023-04-09 10:43 ` [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-09 10:43 ` [PATCH 7/8] MIPS: octeon_switch: Remove duplicated labels Jiaxun Yang
` (2 subsequent siblings)
8 siblings, 0 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
LLVM assembler is not happy with offset that may overflow immediate field.
Use cache_op function instead of inline assembly to fix build error:
arch/mips/mm/c-r4k.c:922:23: error: instruction requires a CPU feature not
currently enabled
"cache\t%1, 0(%0)\n\t"
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/mm/c-r4k.c | 33 ++++++++++++++-------------------
1 file changed, 14 insertions(+), 19 deletions(-)
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 420440cc40b1..89603d033180 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -915,25 +915,20 @@ static inline void rm7k_erratum31(void)
write_c0_taghi(0);
for (addr = INDEX_BASE; addr <= INDEX_BASE + 4096; addr += ic_lsize) {
- __asm__ __volatile__ (
- ".set push\n\t"
- ".set noreorder\n\t"
- ".set "MIPS_ISA_LEVEL"\n\t"
- "cache\t%1, 0(%0)\n\t"
- "cache\t%1, 0x1000(%0)\n\t"
- "cache\t%1, 0x2000(%0)\n\t"
- "cache\t%1, 0x3000(%0)\n\t"
- "cache\t%2, 0(%0)\n\t"
- "cache\t%2, 0x1000(%0)\n\t"
- "cache\t%2, 0x2000(%0)\n\t"
- "cache\t%2, 0x3000(%0)\n\t"
- "cache\t%1, 0(%0)\n\t"
- "cache\t%1, 0x1000(%0)\n\t"
- "cache\t%1, 0x2000(%0)\n\t"
- "cache\t%1, 0x3000(%0)\n\t"
- ".set pop\n"
- :
- : "r" (addr), "i" (Index_Store_Tag_I), "i" (Fill_I));
+ cache_op(Index_Store_Tag_I, addr);
+ cache_op(Index_Store_Tag_I, addr + 0x1000);
+ cache_op(Index_Store_Tag_I, addr + 0x2000);
+ cache_op(Index_Store_Tag_I, addr + 0x3000);
+
+ cache_op(Fill_I, addr);
+ cache_op(Fill_I, addr + 0x1000);
+ cache_op(Fill_I, addr + 0x2000);
+ cache_op(Fill_I, addr + 0x3000);
+
+ cache_op(Index_Store_Tag_I, addr);
+ cache_op(Index_Store_Tag_I, addr + 0x1000);
+ cache_op(Index_Store_Tag_I, addr + 0x2000);
+ cache_op(Index_Store_Tag_I, addr + 0x3000);
}
}
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 7/8] MIPS: octeon_switch: Remove duplicated labels
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
` (5 preceding siblings ...)
2023-04-09 10:43 ` [PATCH 6/8] MIPS: c-r4k: Use cache_op function for rm7k_erratum31 Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-12 13:31 ` Thomas Bogendoerfer
2023-04-09 10:43 ` [PATCH 8/8] MIPS: Implement microMIPS MT ASE helpers Jiaxun Yang
2023-04-21 8:31 ` [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
8 siblings, 1 reply; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
EXPORT macro already have labels defined by itself.
Remove duplicated labels outside to silent assembler warnings.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/kernel/octeon_switch.S | 6 ------
1 file changed, 6 deletions(-)
diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S
index 896080b445c2..9b7c8ab6f08c 100644
--- a/arch/mips/kernel/octeon_switch.S
+++ b/arch/mips/kernel/octeon_switch.S
@@ -428,7 +428,6 @@ done_restore:
jr ra
nop
.space 30 * 4, 0
-octeon_mult_save_end:
EXPORT(octeon_mult_save_end)
END(octeon_mult_save)
@@ -448,7 +447,6 @@ octeon_mult_save_end:
sd k0, PT_MPL+8(sp) /* PT_MPL+8 has MPL1 */
jr ra
sd k1, PT_MPL+16(sp) /* PT_MPL+16 has MPL2 */
-octeon_mult_save2_end:
EXPORT(octeon_mult_save2_end)
END(octeon_mult_save2)
@@ -480,7 +478,6 @@ octeon_mult_save2_end:
sd $10, PT_MPL+(4*8)(sp) /* store MPL4 */
jr ra
sd $11, PT_MPL+(5*8)(sp) /* store MPL5 */
-octeon_mult_save3_end:
EXPORT(octeon_mult_save3_end)
END(octeon_mult_save3)
.set pop
@@ -498,7 +495,6 @@ octeon_mult_save3_end:
jr ra
nop
.space 30 * 4, 0
-octeon_mult_restore_end:
EXPORT(octeon_mult_restore_end)
END(octeon_mult_restore)
@@ -517,7 +513,6 @@ octeon_mult_restore_end:
mtp1 v0 /* P1 */
jr ra
mtp0 v1 /* P0 */
-octeon_mult_restore2_end:
EXPORT(octeon_mult_restore2_end)
END(octeon_mult_restore2)
@@ -548,7 +543,6 @@ octeon_mult_restore2_end:
.word 0x714b000b
/* mtp2 $10, $11 restore P2 and P5 */
-octeon_mult_restore3_end:
EXPORT(octeon_mult_restore3_end)
END(octeon_mult_restore3)
.set pop
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 8/8] MIPS: Implement microMIPS MT ASE helpers
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
` (6 preceding siblings ...)
2023-04-09 10:43 ` [PATCH 7/8] MIPS: octeon_switch: Remove duplicated labels Jiaxun Yang
@ 2023-04-09 10:43 ` Jiaxun Yang
2023-04-21 8:31 ` [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
8 siblings, 0 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-09 10:43 UTC (permalink / raw)
To: linux-mips; +Cc: llvm, tsbogend, ndesaulniers, nathan, Jiaxun Yang
Implement various microMIPS MT ASE helpers accroading to:
MIPS® Architecture for Programmers
Volume IV-f: The MIPS® MT Module for the microMIPS32™ Architecture
Fixes build error:
{standard input}:2616: Error: branch to a symbol in another ISA mode
Boot tested on M5150 with microMIPS enabled on M5150.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/include/asm/asmmacro.h | 22 ++-
arch/mips/include/asm/mipsmtregs.h | 256 +++++++++++++++++------------
arch/mips/include/asm/mipsregs.h | 9 +
3 files changed, 177 insertions(+), 110 deletions(-)
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index de9688911cae..e56bdda483f5 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -217,27 +217,33 @@
* Temporary until all gas have MT ASE support
*/
.macro DMT reg=0
- .word 0x41600bc1 | (\reg << 16)
+ insn_if_mips 0x41600bc1 | (\reg << 16)
+ insn32_if_mm 0x0000057C | (\reg << 21)
.endm
.macro EMT reg=0
- .word 0x41600be1 | (\reg << 16)
+ insn_if_mips 0x41600be1 | (\reg << 16)
+ insn32_if_mm 0x0000257C | (\reg << 21)
.endm
.macro DVPE reg=0
- .word 0x41600001 | (\reg << 16)
+ insn_if_mips 0x41600001 | (\reg << 16)
+ insn32_if_mm 0x0000157C | (\reg << 21)
.endm
.macro EVPE reg=0
- .word 0x41600021 | (\reg << 16)
+ insn_if_mips 0x41600021 | (\reg << 16)
+ insn32_if_mm 0x0000357C | (\reg << 21)
.endm
- .macro MFTR rt=0, rd=0, u=0, sel=0
- .word 0x41000000 | (\rt << 16) | (\rd << 11) | (\u << 5) | (\sel)
+ .macro MFTR rs=0, rt=0, u=0, sel=0
+ insn_if_mips 0x41000000 | (\rt << 16) | (\rs << 11) | (\u << 5) | (\sel)
+ insn32_if_mm 0x0000000E | (\rt << 21) | (\rs << 16) | (\u << 10) | (\sel << 4)
.endm
- .macro MTTR rt=0, rd=0, u=0, sel=0
- .word 0x41800000 | (\rt << 16) | (\rd << 11) | (\u << 5) | (\sel)
+ .macro MTTR rt=0, rs=0, u=0, sel=0
+ insn_if_mips 0x41800000 | (\rt << 16) | (\rs << 11) | (\u << 5) | (\sel)
+ insn32_if_mm 0x00000006 | (\rt << 21) | (\rs << 16) | (\u << 10) | (\sel << 4)
.endm
#ifdef CONFIG_AS_HAS_MSA
diff --git a/arch/mips/include/asm/mipsmtregs.h b/arch/mips/include/asm/mipsmtregs.h
index b6dea86b1b82..30e86861c206 100644
--- a/arch/mips/include/asm/mipsmtregs.h
+++ b/arch/mips/include/asm/mipsmtregs.h
@@ -189,19 +189,24 @@ static inline unsigned core_nvpes(void)
return ((conf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT) + 1;
}
+#define _ASM_SET_DVPE \
+ _ASM_MACRO_1R(dvpe, rt, \
+ _ASM_INSN_IF_MIPS(0x41600001 | __rt << 16) \
+ _ASM_INSN32_IF_MM(0x0000157C | __rt << 21))
+#define _ASM_UNSET_DVPE ".purgem dvpe\n\t"
+
static inline unsigned int dvpe(void)
{
int res = 0;
__asm__ __volatile__(
- " .set push \n"
- " .set noreorder \n"
- " .set noat \n"
- " .set "MIPS_ISA_LEVEL" \n"
- " .word 0x41610001 # dvpe $1 \n"
- " move %0, $1 \n"
- " ehb \n"
- " .set pop \n"
+ " .set push \n"
+ " .set "MIPS_ISA_LEVEL" \n"
+ _ASM_SET_DVPE
+ " dvpe %0 \n"
+ " ehb \n"
+ _ASM_UNSET_DVPE
+ " .set pop \n"
: "=r" (res));
instruction_hazard();
@@ -209,16 +214,22 @@ static inline unsigned int dvpe(void)
return res;
}
+#define _ASM_SET_EVPE \
+ _ASM_MACRO_1R(evpe, rt, \
+ _ASM_INSN_IF_MIPS(0x41600021 | __rt << 16) \
+ _ASM_INSN32_IF_MM(0x0000357C | __rt << 21))
+#define _ASM_UNSET_EVPE ".purgem evpe\n\t"
+
static inline void __raw_evpe(void)
{
__asm__ __volatile__(
- " .set push \n"
- " .set noreorder \n"
- " .set noat \n"
- " .set "MIPS_ISA_LEVEL" \n"
- " .word 0x41600021 # evpe \n"
- " ehb \n"
- " .set pop \n");
+ " .set push \n"
+ " .set "MIPS_ISA_LEVEL" \n"
+ _ASM_SET_EVPE
+ " evpe $0 \n"
+ " ehb \n"
+ _ASM_UNSET_EVPE
+ " .set pop \n");
}
/* Enable virtual processor execution if previous suggested it should be.
@@ -232,18 +243,24 @@ static inline void evpe(int previous)
__raw_evpe();
}
+#define _ASM_SET_DMT \
+ _ASM_MACRO_1R(dmt, rt, \
+ _ASM_INSN_IF_MIPS(0x41600bc1 | __rt << 16) \
+ _ASM_INSN32_IF_MM(0x0000057C | __rt << 21))
+#define _ASM_UNSET_DMT ".purgem dmt\n\t"
+
static inline unsigned int dmt(void)
{
int res;
__asm__ __volatile__(
- " .set push \n"
- " .set "MIPS_ISA_LEVEL" \n"
- " .set noat \n"
- " .word 0x41610BC1 # dmt $1 \n"
- " ehb \n"
- " move %0, $1 \n"
- " .set pop \n"
+ " .set push \n"
+ " .set "MIPS_ISA_LEVEL" \n"
+ _ASM_SET_DMT
+ " dmt %0 \n"
+ " ehb \n"
+ _ASM_UNSET_DMT
+ " .set pop \n"
: "=r" (res));
instruction_hazard();
@@ -251,14 +268,21 @@ static inline unsigned int dmt(void)
return res;
}
+#define _ASM_SET_EMT \
+ _ASM_MACRO_1R(emt, rt, \
+ _ASM_INSN_IF_MIPS(0x41600be1 | __rt << 16) \
+ _ASM_INSN32_IF_MM(0x0000257C | __rt << 21))
+#define _ASM_UNSET_EMT ".purgem emt\n\t"
+
static inline void __raw_emt(void)
{
__asm__ __volatile__(
- " .set push \n"
- " .set noreorder \n"
- " .set "MIPS_ISA_LEVEL" \n"
- " .word 0x41600be1 # emt \n"
- " ehb \n"
+ " .set push \n"
+ " .set "MIPS_ISA_LEVEL" \n"
+ _ASM_SET_EMT
+ " emt $0 \n"
+ _ASM_UNSET_EMT
+ " ehb \n"
" .set pop");
}
@@ -276,41 +300,55 @@ static inline void emt(int previous)
static inline void ehb(void)
{
__asm__ __volatile__(
- " .set push \n"
- " .set "MIPS_ISA_LEVEL" \n"
- " ehb \n"
- " .set pop \n");
+ " .set push \n"
+ " .set "MIPS_ISA_LEVEL" \n"
+ " ehb \n"
+ " .set pop \n");
}
-#define mftc0(rt,sel) \
+#define _ASM_SET_MFTC0 \
+ _ASM_MACRO_2R_1S(mftc0, rs, rt, sel, \
+ _ASM_INSN_IF_MIPS(0x41000000 | __rt << 16 | \
+ __rs << 11 | \\sel) \
+ _ASM_INSN32_IF_MM(0x0000000E | __rt << 21 | \
+ __rs << 16 | \\sel << 4))
+#define _ASM_UNSET_MFTC0 ".purgem mftc0\n\t"
+
+#define mftc0(rt, sel) \
({ \
- unsigned long __res; \
+ unsigned long __res; \
\
__asm__ __volatile__( \
- " .set push \n" \
- " .set "MIPS_ISA_LEVEL" \n" \
- " .set noat \n" \
- " # mftc0 $1, $" #rt ", " #sel " \n" \
- " .word 0x41000800 | (" #rt " << 16) | " #sel " \n" \
- " move %0, $1 \n" \
- " .set pop \n" \
+ " .set push \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
+ _ASM_SET_MFTC0 \
+ " mftc0 $1, " #rt ", " #sel " \n" \
+ _ASM_UNSET_MFTC0 \
+ " .set pop \n" \
: "=r" (__res)); \
\
__res; \
})
+#define _ASM_SET_MFTGPR \
+ _ASM_MACRO_2R(mftgpr, rs, rt, \
+ _ASM_INSN_IF_MIPS(0x41000020 | __rt << 16 | \
+ __rs << 11) \
+ _ASM_INSN32_IF_MM(0x0000040E | __rt << 21 | \
+ __rs << 16))
+#define _ASM_UNSET_MFTGPR ".purgem mftgpr\n\t"
+
#define mftgpr(rt) \
({ \
unsigned long __res; \
\
__asm__ __volatile__( \
- " .set push \n" \
- " .set noat \n" \
- " .set "MIPS_ISA_LEVEL" \n" \
- " # mftgpr $1," #rt " \n" \
- " .word 0x41000820 | (" #rt " << 16) \n" \
- " move %0, $1 \n" \
- " .set pop \n" \
+ " .set push \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
+ _ASM_SET_MFTGPR \
+ " mftgpr %0," #rt " \n" \
+ _ASM_UNSET_MFTGPR \
+ " .set pop \n" \
: "=r" (__res)); \
\
__res; \
@@ -321,35 +359,49 @@ static inline void ehb(void)
unsigned long __res; \
\
__asm__ __volatile__( \
- " mftr %0, " #rt ", " #u ", " #sel " \n" \
+ " mftr %0, " #rt ", " #u ", " #sel " \n" \
: "=r" (__res)); \
\
__res; \
})
-#define mttgpr(rd,v) \
+#define _ASM_SET_MTTGPR \
+ _ASM_MACRO_2R(mttgpr, rt, rs, \
+ _ASM_INSN_IF_MIPS(0x41800020 | __rt << 16 | \
+ __rs << 11) \
+ _ASM_INSN32_IF_MM(0x00000406 | __rt << 21 | \
+ __rs << 16))
+#define _ASM_UNSET_MTTGPR ".purgem mttgpr\n\t"
+
+#define mttgpr(rs, v) \
do { \
__asm__ __volatile__( \
- " .set push \n" \
- " .set "MIPS_ISA_LEVEL" \n" \
- " .set noat \n" \
- " move $1, %0 \n" \
- " # mttgpr $1, " #rd " \n" \
- " .word 0x41810020 | (" #rd " << 11) \n" \
- " .set pop \n" \
+ " .set push \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
+ _ASM_SET_MTTGPR \
+ " mttgpr %0, " #rs " \n" \
+ _ASM_UNSET_MTTGPR \
+ " .set pop \n" \
: : "r" (v)); \
} while (0)
-#define mttc0(rd, sel, v) \
+#define _ASM_SET_MTTC0 \
+ _ASM_MACRO_2R_1S(mttc0, rt, rs, sel, \
+ _ASM_INSN_IF_MIPS(0x41800000 | __rt << 16 | \
+ __rs << 11 | \\sel) \
+ _ASM_INSN32_IF_MM(0x0000040E | __rt << 21 | \
+ __rs << 16 | \\sel << 4))
+#define _ASM_UNSET_MTTC0 ".purgem mttc0\n\t"
+
+#define mttc0(rs, sel, v) \
({ \
__asm__ __volatile__( \
- " .set push \n" \
- " .set "MIPS_ISA_LEVEL" \n" \
- " .set noat \n" \
- " move $1, %0 \n" \
- " # mttc0 %0," #rd ", " #sel " \n" \
- " .word 0x41810000 | (" #rd " << 11) | " #sel " \n" \
- " .set pop \n" \
+ " .set push \n" \
+ " .set "MIPS_ISA_LEVEL" \n" \
+ _ASM_SET_MTTC0 \
+ " mttc0 %0," #rs ", " #sel " \n" \
+ _ASM_UNSET_MTTC0 \
+ " .set pop \n" \
: \
: "r" (v)); \
})
@@ -371,49 +423,49 @@ do { \
/* you *must* set the target tc (settc) before trying to use these */
-#define read_vpe_c0_vpecontrol() mftc0(1, 1)
-#define write_vpe_c0_vpecontrol(val) mttc0(1, 1, val)
-#define read_vpe_c0_vpeconf0() mftc0(1, 2)
-#define write_vpe_c0_vpeconf0(val) mttc0(1, 2, val)
-#define read_vpe_c0_vpeconf1() mftc0(1, 3)
-#define write_vpe_c0_vpeconf1(val) mttc0(1, 3, val)
-#define read_vpe_c0_count() mftc0(9, 0)
-#define write_vpe_c0_count(val) mttc0(9, 0, val)
-#define read_vpe_c0_status() mftc0(12, 0)
-#define write_vpe_c0_status(val) mttc0(12, 0, val)
-#define read_vpe_c0_cause() mftc0(13, 0)
-#define write_vpe_c0_cause(val) mttc0(13, 0, val)
-#define read_vpe_c0_config() mftc0(16, 0)
-#define write_vpe_c0_config(val) mttc0(16, 0, val)
-#define read_vpe_c0_config1() mftc0(16, 1)
-#define write_vpe_c0_config1(val) mttc0(16, 1, val)
-#define read_vpe_c0_config7() mftc0(16, 7)
-#define write_vpe_c0_config7(val) mttc0(16, 7, val)
-#define read_vpe_c0_ebase() mftc0(15, 1)
-#define write_vpe_c0_ebase(val) mttc0(15, 1, val)
-#define write_vpe_c0_compare(val) mttc0(11, 0, val)
-#define read_vpe_c0_badvaddr() mftc0(8, 0)
-#define read_vpe_c0_epc() mftc0(14, 0)
-#define write_vpe_c0_epc(val) mttc0(14, 0, val)
+#define read_vpe_c0_vpecontrol() mftc0($1, 1)
+#define write_vpe_c0_vpecontrol(val) mttc0($1, 1, val)
+#define read_vpe_c0_vpeconf0() mftc0($1, 2)
+#define write_vpe_c0_vpeconf0(val) mttc0($1, 2, val)
+#define read_vpe_c0_vpeconf1() mftc0($1, 3)
+#define write_vpe_c0_vpeconf1(val) mttc0($1, 3, val)
+#define read_vpe_c0_count() mftc0($9, 0)
+#define write_vpe_c0_count(val) mttc0($9, 0, val)
+#define read_vpe_c0_status() mftc0($12, 0)
+#define write_vpe_c0_status(val) mttc0($12, 0, val)
+#define read_vpe_c0_cause() mftc0($13, 0)
+#define write_vpe_c0_cause(val) mttc0($13, 0, val)
+#define read_vpe_c0_config() mftc0($16, 0)
+#define write_vpe_c0_config(val) mttc0($16, 0, val)
+#define read_vpe_c0_config1() mftc0($16, 1)
+#define write_vpe_c0_config1(val) mttc0($16, 1, val)
+#define read_vpe_c0_config7() mftc0($16, 7)
+#define write_vpe_c0_config7(val) mttc0($16, 7, val)
+#define read_vpe_c0_ebase() mftc0($15, 1)
+#define write_vpe_c0_ebase(val) mttc0($15, 1, val)
+#define write_vpe_c0_compare(val) mttc0($11, 0, val)
+#define read_vpe_c0_badvaddr() mftc0($8, 0)
+#define read_vpe_c0_epc() mftc0($14, 0)
+#define write_vpe_c0_epc(val) mttc0($14, 0, val)
/* TC */
-#define read_tc_c0_tcstatus() mftc0(2, 1)
-#define write_tc_c0_tcstatus(val) mttc0(2, 1, val)
-#define read_tc_c0_tcbind() mftc0(2, 2)
-#define write_tc_c0_tcbind(val) mttc0(2, 2, val)
-#define read_tc_c0_tcrestart() mftc0(2, 3)
-#define write_tc_c0_tcrestart(val) mttc0(2, 3, val)
-#define read_tc_c0_tchalt() mftc0(2, 4)
-#define write_tc_c0_tchalt(val) mttc0(2, 4, val)
-#define read_tc_c0_tccontext() mftc0(2, 5)
-#define write_tc_c0_tccontext(val) mttc0(2, 5, val)
+#define read_tc_c0_tcstatus() mftc0($2, 1)
+#define write_tc_c0_tcstatus(val) mttc0($2, 1, val)
+#define read_tc_c0_tcbind() mftc0($2, 2)
+#define write_tc_c0_tcbind(val) mttc0($2, 2, val)
+#define read_tc_c0_tcrestart() mftc0($2, 3)
+#define write_tc_c0_tcrestart(val) mttc0($2, 3, val)
+#define read_tc_c0_tchalt() mftc0($2, 4)
+#define write_tc_c0_tchalt(val) mttc0($2, 4, val)
+#define read_tc_c0_tccontext() mftc0($2, 5)
+#define write_tc_c0_tccontext(val) mttc0($2, 5, val)
/* GPR */
-#define read_tc_gpr_sp() mftgpr(29)
-#define write_tc_gpr_sp(val) mttgpr(29, val)
-#define read_tc_gpr_gp() mftgpr(28)
-#define write_tc_gpr_gp(val) mttgpr(28, val)
+#define read_tc_gpr_sp() mftgpr($29)
+#define write_tc_gpr_sp(val) mttgpr($29, val)
+#define read_tc_gpr_gp() mftgpr($28)
+#define write_tc_gpr_gp(val) mttgpr($28, val)
__BUILD_SET_C0(mvpcontrol)
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 7d2c1c90fa10..b30d5e1672c4 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -1310,6 +1310,15 @@ static inline int mm_insn_16bit(u16 insn)
* the ENC encodings.
*/
+/* Instructions with 1 register operand */
+#define _ASM_MACRO_1R(OP, R1, ENC) \
+ ".macro " #OP " " #R1 "\n\t" \
+ _ASM_SET_PARSE_R \
+ "parse_r __" #R1 ", \\" #R1 "\n\t" \
+ ENC \
+ _ASM_UNSET_PARSE_R \
+ ".endm\n\t"
+
/* Instructions with 1 register operand & 1 immediate operand */
#define _ASM_MACRO_1R1I(OP, R1, I2, ENC) \
".macro " #OP " " #R1 ", " #I2 "\n\t" \
--
2.39.2 (Apple Git-143)
^ permalink raw reply related [flat|nested] 21+ messages in thread
* Re: [PATCH 3/8] MIPS: loongson2ef: Add missing break in cs5536_isa
2023-04-09 10:43 ` [PATCH 3/8] MIPS: loongson2ef: Add missing break in cs5536_isa Jiaxun Yang
@ 2023-04-12 13:31 ` Thomas Bogendoerfer
0 siblings, 0 replies; 21+ messages in thread
From: Thomas Bogendoerfer @ 2023-04-12 13:31 UTC (permalink / raw)
To: Jiaxun Yang; +Cc: linux-mips, llvm, ndesaulniers, nathan
On Sun, Apr 09, 2023 at 11:43:04AM +0100, Jiaxun Yang wrote:
> Fixes build error:
>
> arch/mips/loongson2ef/common/cs5536/cs5536_isa.c:217:2: error:
> unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough]
> default:
> ^
> arch/mips/loongson2ef/common/cs5536/cs5536_isa.c:217:2:
> note: insert 'break;' to avoid fall-through
> default:
> ^
> break;
>
> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
> ---
> arch/mips/loongson2ef/common/cs5536/cs5536_isa.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c b/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c
> index 5ad38f86ee62..d60dd9992377 100644
> --- a/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c
> +++ b/arch/mips/loongson2ef/common/cs5536/cs5536_isa.c
> @@ -213,7 +213,7 @@ void pci_isa_write_reg(int reg, u32 value)
> lo |= 0x00000063;
> _wrmsr(SB_MSR_REG(SB_ERROR), hi, lo);
> }
> -
> + break;
> default:
> /* ALL OTHER PCI CONFIG SPACE HEADER IS NOT IMPLEMENTED. */
> break;
> --
> 2.39.2 (Apple Git-143)
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 7/8] MIPS: octeon_switch: Remove duplicated labels
2023-04-09 10:43 ` [PATCH 7/8] MIPS: octeon_switch: Remove duplicated labels Jiaxun Yang
@ 2023-04-12 13:31 ` Thomas Bogendoerfer
0 siblings, 0 replies; 21+ messages in thread
From: Thomas Bogendoerfer @ 2023-04-12 13:31 UTC (permalink / raw)
To: Jiaxun Yang; +Cc: linux-mips, llvm, ndesaulniers, nathan
On Sun, Apr 09, 2023 at 11:43:08AM +0100, Jiaxun Yang wrote:
> EXPORT macro already have labels defined by itself.
> Remove duplicated labels outside to silent assembler warnings.
>
> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
> ---
> arch/mips/kernel/octeon_switch.S | 6 ------
> 1 file changed, 6 deletions(-)
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 1/8] MIPS: Replace assembly isa level directives with macros
2023-04-09 10:43 ` [PATCH 1/8] MIPS: Replace assembly isa level directives with macros Jiaxun Yang
@ 2023-04-20 16:43 ` Nick Desaulniers
2023-04-20 19:29 ` Jiaxun Yang
0 siblings, 1 reply; 21+ messages in thread
From: Nick Desaulniers @ 2023-04-20 16:43 UTC (permalink / raw)
To: Jiaxun Yang; +Cc: linux-mips, llvm, tsbogend, nathan
On Sun, Apr 9, 2023 at 3:43 AM Jiaxun Yang <jiaxun.yang@flygoat.com> wrote:
>
> There are tons of .set assembly isa level directives in tree
> to set current isa level to a higher level to enable some features.
>
> However as nowadays MIPS is shuffling around opcodes, a single ISA
What do you mean by "shuffling around opcodes?"
> level setting may result wrong opcode in binary. We had MIPS_ISA_LEVEL
> macros to determine most appropriate superset of ISA level, just do a
> tree wide replacement to take advantage of those macros.
Hi Jiaxun,
Thanks for the patch! Do you have more info about how this change
relates to LLVM? Is clang having a hard time assembling some of these
files with the given `.set arch=` directives without this patch?
Seems perhaps related to just {mips32r5, mips64r5} perhaps?
More comments below, inline.
>
> Mapping:
> arch=r4000 -> MIPS_ISA_ARCH_LEVEL
> {mips1, mips3, mips32r2, mips64r2} -> MIPS_ISA_LEVEL
> {mips32r5, mips64r5} -> Special case for VZ, mips64r5 if target ISA
> is lower than R5, otherwise MIPS_ISA_LEVEL
>
> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
> ---
> arch/mips/alchemy/common/sleeper.S | 6 ++--
> arch/mips/include/asm/asmmacro.h | 32 ++++++++++----------
> arch/mips/include/asm/futex.h | 8 ++---
> arch/mips/include/asm/hazards.h | 2 +-
> arch/mips/include/asm/io.h | 4 +--
> arch/mips/include/asm/mipsmtregs.h | 18 ++++++------
> arch/mips/include/asm/mipsregs.h | 47 +++++++++++++++++-------------
> arch/mips/include/asm/stackframe.h | 2 +-
> arch/mips/kernel/bmips_vec.S | 4 +--
> arch/mips/kernel/csrc-r4k.c | 2 +-
> arch/mips/kernel/genex.S | 8 ++---
> arch/mips/kernel/idle.c | 6 ++--
> arch/mips/kernel/r4k_fpu.S | 4 +--
> arch/mips/kernel/syscall.c | 2 +-
> arch/mips/lantiq/clk.c | 2 +-
> arch/mips/lib/csum_partial.S | 5 ++--
> arch/mips/mm/c-r4k.c | 2 +-
> arch/mips/mm/cex-oct.S | 2 +-
> arch/mips/mm/sc-ip22.c | 6 ++--
> 19 files changed, 85 insertions(+), 77 deletions(-)
>
> diff --git a/arch/mips/alchemy/common/sleeper.S b/arch/mips/alchemy/common/sleeper.S
> index 13586d224314..e19f20223aac 100644
> --- a/arch/mips/alchemy/common/sleeper.S
> +++ b/arch/mips/alchemy/common/sleeper.S
> @@ -91,7 +91,7 @@ LEAF(alchemy_sleep_au1000)
>
> /* cache following instructions, as memory gets put to sleep */
> la t0, 1f
> - .set arch=r4000
> + .set MIPS_ISA_ARCH_LEVEL_RAW
> cache 0x14, 0(t0)
> cache 0x14, 32(t0)
> cache 0x14, 64(t0)
> @@ -117,7 +117,7 @@ LEAF(alchemy_sleep_au1550)
>
> /* cache following instructions, as memory gets put to sleep */
> la t0, 1f
> - .set arch=r4000
> + .set MIPS_ISA_ARCH_LEVEL_RAW
> cache 0x14, 0(t0)
> cache 0x14, 32(t0)
> cache 0x14, 64(t0)
> @@ -159,7 +159,7 @@ LEAF(alchemy_sleep_au1300)
> la t1, 4f
> subu t2, t1, t0
>
> - .set arch=r4000
> + .set MIPS_ISA_ARCH_LEVEL_RAW
>
> 1: cache 0x14, 0(t0)
> subu t2, t2, 32
> diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
> index 74c2dedc55b4..2491a6c68390 100644
> --- a/arch/mips/include/asm/asmmacro.h
> +++ b/arch/mips/include/asm/asmmacro.h
> @@ -107,7 +107,7 @@
>
> .macro fpu_save_16odd thread
> .set push
> - .set mips64r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set hardfloat
> sdc1 $f1, THREAD_FPR1(\thread)
> @@ -166,7 +166,7 @@
>
> .macro fpu_restore_16odd thread
> .set push
> - .set mips64r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set hardfloat
> ldc1 $f1, THREAD_FPR1(\thread)
> @@ -242,7 +242,7 @@
> #ifdef CONFIG_AS_HAS_MSA
> .macro _cfcmsa rd, cs
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> cfcmsa \rd, $\cs
> @@ -251,7 +251,7 @@
>
> .macro _ctcmsa cd, rs
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> ctcmsa $\cd, \rs
> @@ -260,7 +260,7 @@
>
> .macro ld_b wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> ld.b $w\wd, \off(\base)
> @@ -269,7 +269,7 @@
>
> .macro ld_h wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> ld.h $w\wd, \off(\base)
> @@ -278,7 +278,7 @@
>
> .macro ld_w wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> ld.w $w\wd, \off(\base)
> @@ -287,7 +287,7 @@
>
> .macro ld_d wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> ld.d $w\wd, \off(\base)
> @@ -296,7 +296,7 @@
>
> .macro st_b wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> st.b $w\wd, \off(\base)
> @@ -305,7 +305,7 @@
>
> .macro st_h wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> st.h $w\wd, \off(\base)
> @@ -314,7 +314,7 @@
>
> .macro st_w wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> st.w $w\wd, \off(\base)
> @@ -323,7 +323,7 @@
>
> .macro st_d wd, off, base
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> st.d $w\wd, \off(\base)
> @@ -332,7 +332,7 @@
>
> .macro copy_s_w ws, n
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> copy_s.w $1, $w\ws[\n]
> @@ -341,7 +341,7 @@
>
> .macro copy_s_d ws, n
> .set push
> - .set mips64r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> copy_s.d $1, $w\ws[\n]
> @@ -350,7 +350,7 @@
>
> .macro insert_w wd, n
> .set push
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> insert.w $w\wd[\n], $1
> @@ -359,7 +359,7 @@
>
> .macro insert_d wd, n
> .set push
> - .set mips64r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> .set msa
> insert.d $w\wd[\n], $1
> diff --git a/arch/mips/include/asm/futex.h b/arch/mips/include/asm/futex.h
> index 05832eb240fa..2107e536a308 100644
> --- a/arch/mips/include/asm/futex.h
> +++ b/arch/mips/include/asm/futex.h
> @@ -29,11 +29,11 @@
> " .set push \n" \
> " .set noat \n" \
> " .set push \n" \
> - " .set arch=r4000 \n" \
> + " .set "MIPS_ISA_ARCH_LEVEL" \n" \
> "1: ll %1, %4 # __futex_atomic_op \n" \
> " .set pop \n" \
> " " insn " \n" \
> - " .set arch=r4000 \n" \
> + " .set "MIPS_ISA_ARCH_LEVEL" \n" \
> "2: sc $1, %2 \n" \
> " beqzl $1, 1b \n" \
> __stringify(__WEAK_LLSC_MB) " \n" \
> @@ -144,12 +144,12 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
> " .set push \n"
> " .set noat \n"
> " .set push \n"
> - " .set arch=r4000 \n"
> + " .set "MIPS_ISA_ARCH_LEVEL" \n"
> "1: ll %1, %3 \n"
> " bne %1, %z4, 3f \n"
> " .set pop \n"
> " move $1, %z5 \n"
> - " .set arch=r4000 \n"
> + " .set "MIPS_ISA_ARCH_LEVEL" \n"
> "2: sc $1, %2 \n"
> " beqzl $1, 1b \n"
> __stringify(__WEAK_LLSC_MB) " \n"
> diff --git a/arch/mips/include/asm/hazards.h b/arch/mips/include/asm/hazards.h
> index cb16be93b048..ca18c66530e8 100644
> --- a/arch/mips/include/asm/hazards.h
> +++ b/arch/mips/include/asm/hazards.h
> @@ -144,7 +144,7 @@ do { \
> \
> __asm__ __volatile__( \
> " .set push \n" \
> - " .set mips64r2 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> " dla %0, 1f \n" \
> " jr.hb %0 \n" \
> " .set pop \n" \
> diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
> index cc28d207a061..e2ec7ec3dc20 100644
> --- a/arch/mips/include/asm/io.h
> +++ b/arch/mips/include/asm/io.h
> @@ -243,7 +243,7 @@ static inline void pfx##write##bwlq(type val, \
> local_irq_save(__flags); \
> __asm__ __volatile__( \
> ".set push" "\t\t# __writeq""\n\t" \
> - ".set arch=r4000" "\n\t" \
> + ".set "MIPS_ISA_ARCH_LEVEL "\n\t" \
> "dsll32 %L0, %L0, 0" "\n\t" \
> "dsrl32 %L0, %L0, 0" "\n\t" \
> "dsll32 %M0, %M0, 0" "\n\t" \
> @@ -277,7 +277,7 @@ static inline type pfx##read##bwlq(const volatile void __iomem *mem) \
> local_irq_save(__flags); \
> __asm__ __volatile__( \
> ".set push" "\t\t# __readq" "\n\t" \
> - ".set arch=r4000" "\n\t" \
> + ".set "MIPS_ISA_ARCH_LEVEL "\n\t" \
> "ld %L0, %1" "\n\t" \
> "dsra32 %M0, %L0, 0" "\n\t" \
> "sll %L0, %L0, 0" "\n\t" \
> diff --git a/arch/mips/include/asm/mipsmtregs.h b/arch/mips/include/asm/mipsmtregs.h
> index a8d67c2f4f7b..b6dea86b1b82 100644
> --- a/arch/mips/include/asm/mipsmtregs.h
> +++ b/arch/mips/include/asm/mipsmtregs.h
> @@ -197,7 +197,7 @@ static inline unsigned int dvpe(void)
> " .set push \n"
> " .set noreorder \n"
> " .set noat \n"
> - " .set mips32r2 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " .word 0x41610001 # dvpe $1 \n"
> " move %0, $1 \n"
> " ehb \n"
> @@ -215,7 +215,7 @@ static inline void __raw_evpe(void)
> " .set push \n"
> " .set noreorder \n"
> " .set noat \n"
> - " .set mips32r2 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " .word 0x41600021 # evpe \n"
> " ehb \n"
> " .set pop \n");
> @@ -238,7 +238,7 @@ static inline unsigned int dmt(void)
>
> __asm__ __volatile__(
> " .set push \n"
> - " .set mips32r2 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " .set noat \n"
> " .word 0x41610BC1 # dmt $1 \n"
> " ehb \n"
> @@ -256,7 +256,7 @@ static inline void __raw_emt(void)
> __asm__ __volatile__(
> " .set push \n"
> " .set noreorder \n"
> - " .set mips32r2 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " .word 0x41600be1 # emt \n"
> " ehb \n"
> " .set pop");
> @@ -277,7 +277,7 @@ static inline void ehb(void)
> {
> __asm__ __volatile__(
> " .set push \n"
> - " .set mips32r2 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " ehb \n"
> " .set pop \n");
> }
> @@ -288,7 +288,7 @@ static inline void ehb(void)
> \
> __asm__ __volatile__( \
> " .set push \n" \
> - " .set mips32r2 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> " .set noat \n" \
> " # mftc0 $1, $" #rt ", " #sel " \n" \
> " .word 0x41000800 | (" #rt " << 16) | " #sel " \n" \
> @@ -306,7 +306,7 @@ static inline void ehb(void)
> __asm__ __volatile__( \
> " .set push \n" \
> " .set noat \n" \
> - " .set mips32r2 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> " # mftgpr $1," #rt " \n" \
> " .word 0x41000820 | (" #rt " << 16) \n" \
> " move %0, $1 \n" \
> @@ -331,7 +331,7 @@ static inline void ehb(void)
> do { \
> __asm__ __volatile__( \
> " .set push \n" \
> - " .set mips32r2 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> " .set noat \n" \
> " move $1, %0 \n" \
> " # mttgpr $1, " #rd " \n" \
> @@ -344,7 +344,7 @@ do { \
> ({ \
> __asm__ __volatile__( \
> " .set push \n" \
> - " .set mips32r2 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> " .set noat \n" \
> " move $1, %0 \n" \
> " # mttc0 %0," #rd ", " #sel " \n" \
> diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
> index 8f0ebc399338..9d928b952abf 100644
> --- a/arch/mips/include/asm/mipsregs.h
> +++ b/arch/mips/include/asm/mipsregs.h
> @@ -1421,7 +1421,7 @@ do { \
> else \
> __asm__ vol( \
> ".set\tpush\n\t" \
> - ".set\tmips32\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "mfc0\t%0, " #source ", " #sel "\n\t" \
> ".set\tpop\n\t" \
> : "=r" (__res)); \
> @@ -1435,14 +1435,14 @@ do { \
> else if (sel == 0) \
> __asm__ vol( \
> ".set\tpush\n\t" \
> - ".set\tmips3\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dmfc0\t%0, " #source "\n\t" \
> ".set\tpop" \
> : "=r" (__res)); \
> else \
> __asm__ vol( \
> ".set\tpush\n\t" \
> - ".set\tmips64\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dmfc0\t%0, " #source ", " #sel "\n\t" \
> ".set\tpop" \
> : "=r" (__res)); \
> @@ -1470,7 +1470,7 @@ do { \
> else \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips32\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "mtc0\t%z0, " #register ", " #sel "\n\t" \
> ".set\tpop" \
> : : "Jr" ((unsigned int)(value))); \
> @@ -1483,14 +1483,14 @@ do { \
> else if (sel == 0) \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips3\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dmtc0\t%z0, " #register "\n\t" \
> ".set\tpop" \
> : : "Jr" (value)); \
> else \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips64\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dmtc0\t%z0, " #register ", " #sel "\n\t" \
> ".set\tpop" \
> : : "Jr" (value)); \
> @@ -1545,7 +1545,7 @@ do { \
> if (sel == 0) \
> __asm__ vol( \
> ".set\tpush\n\t" \
> - ".set\tmips64\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dmfc0\t%L0, " #source "\n\t" \
> "dsra\t%M0, %L0, 32\n\t" \
> "sll\t%L0, %L0, 0\n\t" \
> @@ -1554,7 +1554,7 @@ do { \
> else \
> __asm__ vol( \
> ".set\tpush\n\t" \
> - ".set\tmips64\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dmfc0\t%L0, " #source ", " #sel "\n\t" \
> "dsra\t%M0, %L0, 32\n\t" \
> "sll\t%L0, %L0, 0\n\t" \
> @@ -1582,7 +1582,7 @@ do { \
> else if (sel == 0) \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips64\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dsll\t%L0, %L0, 32\n\t" \
> "dsrl\t%L0, %L0, 32\n\t" \
> "dsll\t%M0, %M0, 32\n\t" \
> @@ -1593,7 +1593,7 @@ do { \
> else \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips64\n\t" \
> + ".set\t "MIPS_ISA_LEVEL" \n\t" \
> "dsll\t%L0, %L0, 32\n\t" \
> "dsrl\t%L0, %L0, 32\n\t" \
> "dsll\t%M0, %M0, 32\n\t" \
> @@ -1628,7 +1628,7 @@ do { \
> \
> __asm__ __volatile__( \
> " .set push \n" \
> - " .set mips32r2 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> _ASM_SET_MFHC0 \
> " mfhc0 %0, " #source ", %1 \n" \
> _ASM_UNSET_MFHC0 \
> @@ -1642,7 +1642,7 @@ do { \
> do { \
> __asm__ __volatile__( \
> " .set push \n" \
> - " .set mips32r2 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> _ASM_SET_MTHC0 \
> " mthc0 %z0, " #register ", %1 \n" \
> _ASM_UNSET_MTHC0 \
> @@ -2040,7 +2040,14 @@ do { \
> * Macros to access the guest system control coprocessor
> */
>
> -#ifndef CONFIG_AS_HAS_VIRT
> +#if MIPS_ISA_REV < 5
> +/* VZ ASE should be able to work with Release 2 but LLVM thinks it needs R5 */
> +#define MIPS_ISA_LEVEL_VIRT "mips64r5"
> +#else
> +#define MIPS_ISA_LEVEL_VIRT MIPS_ISA_LEVEL
> +#endif
Do we have a bug on file for LLVM for this? If not, please file one.
Either way, please include a link in the commit message (and maybe in
a comment in the sources as well).
> +
> +#ifndef TOOLCHAIN_SUPPORTS_VIRT
> #define _ASM_SET_MFGC0 \
> _ASM_MACRO_2R_1S(mfgc0, rt, rs, sel, \
> _ASM_INSN_IF_MIPS(0x40600000 | __rt << 16 | __rs << 11 | \\sel) \
> @@ -2099,7 +2106,7 @@ do { \
> ({ int __res; \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips32r5\n\t" \
> + ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
> _ASM_SET_MFGC0 \
> "mfgc0\t%0, " #source ", %1\n\t" \
> _ASM_UNSET_MFGC0 \
> @@ -2113,7 +2120,7 @@ do { \
> ({ unsigned long long __res; \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips64r5\n\t" \
> + ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
> _ASM_SET_DMFGC0 \
> "dmfgc0\t%0, " #source ", %1\n\t" \
> _ASM_UNSET_DMFGC0 \
> @@ -2127,7 +2134,7 @@ do { \
> do { \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips32r5\n\t" \
> + ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
> _ASM_SET_MTGC0 \
> "mtgc0\t%z0, " #register ", %1\n\t" \
> _ASM_UNSET_MTGC0 \
> @@ -2140,7 +2147,7 @@ do { \
> do { \
> __asm__ __volatile__( \
> ".set\tpush\n\t" \
> - ".set\tmips64r5\n\t" \
> + ".set\t " MIPS_ISA_LEVEL_VIRT " \n\t" \
> _ASM_SET_DMTGC0 \
> "dmtgc0\t%z0, " #register ", %1\n\t" \
> _ASM_UNSET_DMTGC0 \
> @@ -2376,7 +2383,7 @@ do { \
> " .set reorder \n" \
> " # gas fails to assemble cfc1 for some archs, \n" \
> " # like Octeon. \n" \
> - " .set mips1 \n" \
> + " .set "MIPS_ISA_LEVEL" \n" \
> " .set hardfloat \n" \
> " cfc1 %0,"STR(source)" \n" \
> " .set pop \n" \
> @@ -2748,7 +2755,7 @@ static inline void tlb_read(void)
> " .set push \n"
> " .set noreorder \n"
> " .set noat \n"
> - " .set mips32r2 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " .word 0x41610001 # dvpe $1 \n"
> " move %0, $1 \n"
> " ehb \n"
> @@ -2769,7 +2776,7 @@ static inline void tlb_read(void)
> " .set push \n"
> " .set noreorder \n"
> " .set noat \n"
> - " .set mips32r2 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " .word 0x41600021 # evpe \n"
> " ehb \n"
> " .set pop \n");
> diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
> index a8705aef47e1..5b3d374f43e0 100644
> --- a/arch/mips/include/asm/stackframe.h
> +++ b/arch/mips/include/asm/stackframe.h
> @@ -428,7 +428,7 @@
> eretnc
> #else
> .set push
> - .set arch=r4000
> + .set MIPS_ISA_ARCH_LEVEL_RAW
> eret
> .set pop
> #endif
> diff --git a/arch/mips/kernel/bmips_vec.S b/arch/mips/kernel/bmips_vec.S
> index 921a5fa55da6..f92a4b216da8 100644
> --- a/arch/mips/kernel/bmips_vec.S
> +++ b/arch/mips/kernel/bmips_vec.S
> @@ -21,7 +21,7 @@
> #include <asm/bmips.h>
>
> .macro BARRIER
> - .set mips32
> + .set MIPS_ISA_LEVEL_RAW
> _ssnop
> _ssnop
> _ssnop
> @@ -123,7 +123,7 @@ NESTED(bmips_reset_nmi_vec, PT_SIZE, sp)
> jr k0
>
> RESTORE_ALL
> - .set arch=r4000
> + .set MIPS_ISA_ARCH_LEVEL_RAW
> eret
>
> #ifdef CONFIG_SMP
> diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
> index edc4afc080fa..906fa1a78f7f 100644
> --- a/arch/mips/kernel/csrc-r4k.c
> +++ b/arch/mips/kernel/csrc-r4k.c
> @@ -35,7 +35,7 @@ static inline unsigned int rdhwr_count(void)
>
> __asm__ __volatile__(
> " .set push\n"
> - " .set mips32r2\n"
> + " .set "MIPS_ISA_LEVEL"\n"
> " rdhwr %0, $2\n"
> " .set pop\n"
> : "=r" (count));
> diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
> index b6de8e88c1bd..2268304ae70e 100644
> --- a/arch/mips/kernel/genex.S
> +++ b/arch/mips/kernel/genex.S
> @@ -50,7 +50,7 @@ NESTED(except_vec3_generic, 0, sp)
> */
> NESTED(except_vec3_r4000, 0, sp)
> .set push
> - .set arch=r4000
> + .set MIPS_ISA_ARCH_LEVEL_RAW
> .set noat
> mfc0 k1, CP0_CAUSE
> li k0, 31<<2
> @@ -403,7 +403,7 @@ NESTED(ejtag_debug_handler, PT_SIZE, sp)
> ejtag_return:
> back_to_back_c0_hazard
> MFC0 k0, CP0_DESAVE
> - .set mips32
> + .set MIPS_ISA_LEVEL_RAW
> deret
> .set pop
> END(ejtag_debug_handler)
> @@ -503,7 +503,7 @@ NESTED(nmi_handler, PT_SIZE, sp)
> * We need to specify a selector to access the CP0.Diag1 (GSCause)
> * register. All GSExc-equipped processors have MIPS32.
> */
> - .set mips32
> + .set MIPS_ISA_LEVEL_RAW
> mfc0 a1, CP0_DIAGNOSTIC1
> .set pop
> TRACE_IRQS_ON
> @@ -665,7 +665,7 @@ isrdhwr:
> xori k1, _THREAD_MASK
> LONG_L v1, TI_TP_VALUE(k1)
> .set push
> - .set arch=r4000
> + .set MIPS_ISA_ARCH_LEVEL_RAW
> eret
> .set pop
> #endif
> diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
> index 5abc8b7340f8..541470be5ec6 100644
> --- a/arch/mips/kernel/idle.c
> +++ b/arch/mips/kernel/idle.c
> @@ -54,7 +54,7 @@ void __cpuidle r4k_wait_irqoff(void)
> if (!need_resched())
> __asm__(
> " .set push \n"
> - " .set arch=r4000 \n"
> + " .set "MIPS_ISA_ARCH_LEVEL"\n"
> " wait \n"
> " .set pop \n");
> }
> @@ -68,7 +68,7 @@ static void __cpuidle rm7k_wait_irqoff(void)
> if (!need_resched())
> __asm__(
> " .set push \n"
> - " .set arch=r4000 \n"
> + " .set "MIPS_ISA_ARCH_LEVEL" \n"
> " .set noat \n"
> " mfc0 $1, $12 \n"
> " sync \n"
> @@ -89,7 +89,7 @@ static void __cpuidle au1k_wait(void)
>
> __asm__(
> " .set push \n"
> - " .set arch=r4000 \n"
> + " .set "MIPS_ISA_ARCH_LEVEL" \n"
> " cache 0x14, 0(%0) \n"
> " cache 0x14, 32(%0) \n"
> " sync \n"
> diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S
> index 4e8c98517d9d..ec508ff455f2 100644
> --- a/arch/mips/kernel/r4k_fpu.S
> +++ b/arch/mips/kernel/r4k_fpu.S
> @@ -107,7 +107,7 @@ LEAF(_save_fp_context)
> .set push
> .set hardfloat
> #if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5)
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> mfc0 t0, CP0_STATUS
> sll t0, t0, 5
> @@ -175,7 +175,7 @@ LEAF(_restore_fp_context)
> .set push
> .set hardfloat
> #if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5)
> - .set mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> .set fp=64
> mfc0 t0, CP0_STATUS
> sll t0, t0, 5
> diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
> index ae93a607ddf7..7f2be5912997 100644
> --- a/arch/mips/kernel/syscall.c
> +++ b/arch/mips/kernel/syscall.c
> @@ -109,7 +109,7 @@ static inline int mips_atomic_set(unsigned long addr, unsigned long new)
> if (cpu_has_llsc && IS_ENABLED(CONFIG_WAR_R10000_LLSC)) {
> __asm__ __volatile__ (
> " .set push \n"
> - " .set arch=r4000 \n"
> + " .set "MIPS_ISA_ARCH_LEVEL" \n"
> " li %[err], 0 \n"
> "1: ll %[old], (%[addr]) \n"
> " move %[tmp], %[new] \n"
> diff --git a/arch/mips/lantiq/clk.c b/arch/mips/lantiq/clk.c
> index 2d5a0bcb0cec..81e3329fc5de 100644
> --- a/arch/mips/lantiq/clk.c
> +++ b/arch/mips/lantiq/clk.c
> @@ -177,7 +177,7 @@ static inline u32 get_counter_resolution(void)
>
> __asm__ __volatile__(
> ".set push\n"
> - ".set mips32r2\n"
> + ".set "MIPS_ISA_LEVEL"\n"
> "rdhwr %0, $3\n"
> ".set pop\n"
> : "=&r" (res)
> diff --git a/arch/mips/lib/csum_partial.S b/arch/mips/lib/csum_partial.S
> index 7767137c3e49..4b1060c3494b 100644
> --- a/arch/mips/lib/csum_partial.S
> +++ b/arch/mips/lib/csum_partial.S
> @@ -13,6 +13,7 @@
> #include <linux/errno.h>
> #include <asm/asm.h>
> #include <asm/asm-offsets.h>
> +#include <asm/compiler.h>
> #include <asm/export.h>
> #include <asm/regdef.h>
>
> @@ -282,7 +283,7 @@ EXPORT_SYMBOL(csum_partial)
> #if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \
> defined(CONFIG_CPU_LOONGSON64)
> .set push
> - .set arch=mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> wsbh v1, sum
> movn sum, v1, t7
> .set pop
> @@ -707,7 +708,7 @@ EXPORT_SYMBOL(csum_partial)
> #if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \
> defined(CONFIG_CPU_LOONGSON64)
> .set push
> - .set arch=mips32r2
> + .set MIPS_ISA_LEVEL_RAW
> wsbh v1, sum
> movn sum, v1, odd
> .set pop
> diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
> index 4b6554b48923..420440cc40b1 100644
> --- a/arch/mips/mm/c-r4k.c
> +++ b/arch/mips/mm/c-r4k.c
> @@ -918,7 +918,7 @@ static inline void rm7k_erratum31(void)
> __asm__ __volatile__ (
> ".set push\n\t"
> ".set noreorder\n\t"
> - ".set mips3\n\t"
> + ".set "MIPS_ISA_LEVEL"\n\t"
> "cache\t%1, 0(%0)\n\t"
> "cache\t%1, 0x1000(%0)\n\t"
> "cache\t%1, 0x2000(%0)\n\t"
> diff --git a/arch/mips/mm/cex-oct.S b/arch/mips/mm/cex-oct.S
> index 9029092aa740..bb9f6b960786 100644
> --- a/arch/mips/mm/cex-oct.S
> +++ b/arch/mips/mm/cex-oct.S
> @@ -19,7 +19,7 @@
> LEAF(except_vec2_octeon)
>
> .set push
> - .set mips64r2
> + .set MIPS_ISA_LEVEL_RAW
> .set noreorder
> .set noat
>
> diff --git a/arch/mips/mm/sc-ip22.c b/arch/mips/mm/sc-ip22.c
> index d7238687d790..9a0c29946c2d 100644
> --- a/arch/mips/mm/sc-ip22.c
> +++ b/arch/mips/mm/sc-ip22.c
> @@ -33,7 +33,7 @@ static inline void indy_sc_wipe(unsigned long first, unsigned long last)
> __asm__ __volatile__(
> " .set push # indy_sc_wipe \n"
> " .set noreorder \n"
> - " .set mips3 \n"
> + " .set "MIPS_ISA_LEVEL" \n"
> " .set noat \n"
> " mfc0 %2, $12 \n"
> " li $1, 0x80 # Go 64 bit \n"
> @@ -108,7 +108,7 @@ static void indy_sc_enable(void)
> __asm__ __volatile__(
> ".set\tpush\n\t"
> ".set\tnoreorder\n\t"
> - ".set\tmips3\n\t"
> + ".set\t"MIPS_ISA_LEVEL"\n\t"
> "mfc0\t%2, $12\n\t"
> "nop; nop; nop; nop;\n\t"
> "li\t%1, 0x80\n\t"
> @@ -138,7 +138,7 @@ static void indy_sc_disable(void)
> __asm__ __volatile__(
> ".set\tpush\n\t"
> ".set\tnoreorder\n\t"
> - ".set\tmips3\n\t"
> + ".set\t"MIPS_ISA_LEVEL"\n\t"
> "li\t%0, 0x1\n\t"
> "dsll\t%0, 31\n\t"
> "lui\t%1, 0x9000\n\t"
> --
> 2.39.2 (Apple Git-143)
>
--
Thanks,
~Nick Desaulniers
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 1/8] MIPS: Replace assembly isa level directives with macros
2023-04-20 16:43 ` Nick Desaulniers
@ 2023-04-20 19:29 ` Jiaxun Yang
2023-04-21 7:41 ` Thomas Bogendoerfer
2023-04-21 13:01 ` Maciej W. Rozycki
0 siblings, 2 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-20 19:29 UTC (permalink / raw)
To: Nick Desaulniers; +Cc: linux-mips, llvm, Thomas Bogendoerfer, Nathan Chancellor
> 2023年4月20日 17:43，Nick Desaulniers <ndesaulniers@google.com> 写道：
>
> On Sun, Apr 9, 2023 at 3:43 AM Jiaxun Yang <jiaxun.yang@flygoat.com> wrote:
>>
>> There are tons of .set assembly isa level directives in tree
>> to set current isa level to a higher level to enable some features.
>>
>> However as nowadays MIPS is shuffling around opcodes, a single ISA
>
> What do you mean by "shuffling around opcodes?"
Newer MIPS ISA (i.e. MIPS Release 6) had changed opcodes for some instructions.
Mostly moving around opcode fields.
>
>> level setting may result wrong opcode in binary. We had MIPS_ISA_LEVEL
>> macros to determine most appropriate superset of ISA level, just do a
>> tree wide replacement to take advantage of those macros.
>
> Hi Jiaxun,
> Thanks for the patch! Do you have more info about how this change
> relates to LLVM? Is clang having a hard time assembling some of these
> files with the given `.set arch=` directives without this patch?
> Seems perhaps related to just {mips32r5, mips64r5} perhaps?
Yes, GAS and LLVM sometimes have different opinions on what a instruction
feature should belong to. Personally I think there is no right or wrong in most case.
So generally when we try to use some inline assembly features that toolchain
may consider belongs to higher ISA level we will use `.set mips64r2` directives.
Having this patch just unified the defined arch across the tree, so it happens to fix
some cases where `.set` was given a improper option.
>
> More comments below, inline.
>>
>> -#ifndef CONFIG_AS_HAS_VIRT
>> +#if MIPS_ISA_REV < 5
>> +/* VZ ASE should be able to work with Release 2 but LLVM thinks it needs R5 */
>> +#define MIPS_ISA_LEVEL_VIRT "mips64r5"
>> +#else
>> +#define MIPS_ISA_LEVEL_VIRT MIPS_ISA_LEVEL
>> +#endif
>
> Do we have a bug on file for LLVM for this? If not, please file one.
> Either way, please include a link in the commit message (and maybe in
> a comment in the sources as well).
This is a perfect example, strictly speaking VZ extension is a addition of MIPS Release 5,
LLVM is doing nothing wrong.
In reality we are happy to run MIPS Release 2 Kernel on Release 5 CPUs, so GAS decided
to allow it live with any MIPS level.
Perhaps I should reword the comment.
Thanks.
- Jiaxun
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 1/8] MIPS: Replace assembly isa level directives with macros
2023-04-20 19:29 ` Jiaxun Yang
@ 2023-04-21 7:41 ` Thomas Bogendoerfer
2023-04-21 8:18 ` Jiaxun Yang
2023-04-21 13:01 ` Maciej W. Rozycki
1 sibling, 1 reply; 21+ messages in thread
From: Thomas Bogendoerfer @ 2023-04-21 7:41 UTC (permalink / raw)
To: Jiaxun Yang; +Cc: Nick Desaulniers, linux-mips, llvm, Nathan Chancellor
On Thu, Apr 20, 2023 at 08:29:03PM +0100, Jiaxun Yang wrote:
> Yes, GAS and LLVM sometimes have different opinions on what a instruction
> feature should belong to. Personally I think there is no right or wrong in most case.
>
> So generally when we try to use some inline assembly features that toolchain
> may consider belongs to higher ISA level we will use `.set mips64r2` directives.
>
> Having this patch just unified the defined arch across the tree, so it happens to fix
> some cases where `.set` was given a improper option.
I'd prefer, if we don't magically fix something by doing this massive
replacement. So first bug fixing then cleanup.
And what I don't like is the name of the #defines (I know it's not your
choice, ), they don't tell me anything and it's still not clear which
one should be used in which case.
I see one use case, which is enabling 64bit instruction inside a 32bit
kernel.
What are the others ?
Do we really need all of them ? For example the change in
arch/mips/mm/cex-oct.S, this is for a octeon kernel, which only supports
and works with 64bit kernels...
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 1/8] MIPS: Replace assembly isa level directives with macros
2023-04-21 7:41 ` Thomas Bogendoerfer
@ 2023-04-21 8:18 ` Jiaxun Yang
0 siblings, 0 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-21 8:18 UTC (permalink / raw)
To: Thomas Bogendoerfer; +Cc: Nick Desaulniers, linux-mips, llvm, Nathan Chancellor
> 2023年4月21日 08:41，Thomas Bogendoerfer <tsbogend@alpha.franken.de> 写道：
>
> On Thu, Apr 20, 2023 at 08:29:03PM +0100, Jiaxun Yang wrote:
>> Yes, GAS and LLVM sometimes have different opinions on what a instruction
>> feature should belong to. Personally I think there is no right or wrong in most case.
>>
>> So generally when we try to use some inline assembly features that toolchain
>> may consider belongs to higher ISA level we will use `.set mips64r2` directives.
>>
>> Having this patch just unified the defined arch across the tree, so it happens to fix
>> some cases where `.set` was given a improper option.
>
> I'd prefer, if we don't magically fix something by doing this massive
> replacement. So first bug fixing then cleanup.
It really cost a fortune to identify all of those problems, while this is
A one off fix for all potential problems.
>
> And what I don't like is the name of the #defines (I know it's not your
> choice, ), they don't tell me anything and it's still not clear which
> one should be used in which case.
Perhaps MIPS_ISA_SUPERSET or something?
>
> I see one use case, which is enabling 64bit instruction inside a 32bit
> kernel.
>
> What are the others ?
Mostly enabling instructions that may not belong to current -march config.
e.g.:
MT/MSA requires R2 but sometimes we do want to compile in for R1 kernel.
MFC0/MTC0 with sel oprand requires R1, but we are using it on earlier CPUs with
sel = 0 or on some unreachable (only determined at runtime) paths.
GAS is unhappy to assemble LLSC on some CPU variants, while we are going
to detect if we can use LLSC on those systems at runtime. The same for wait
and cache.
There are just too many usage in kernel.
>
> Do we really need all of them ? For example the change in
> arch/mips/mm/cex-oct.S, this is for a octeon kernel, which only supports
> and works with 64bit kernels...
I must admit by my visual inspection there is certainly some unnecessary .sets, sometimes
they are blindly copied from else where.
But identify them requires a lot of effort, i.e., build for all of our support CPUs with
different ASE/Endian options. I’d leave this for a future clean-up.
Thanks
Jiaxun
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 0/7] MIPS: LLVM build fixes
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
` (7 preceding siblings ...)
2023-04-09 10:43 ` [PATCH 8/8] MIPS: Implement microMIPS MT ASE helpers Jiaxun Yang
@ 2023-04-21 8:31 ` Jiaxun Yang
8 siblings, 0 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-21 8:31 UTC (permalink / raw)
To: Thomas Bogendoerfer; +Cc: llvm, Nick Desaulniers, Nathan Chancellor, linux-mips
> 2023年4月9日 11:43，Jiaxun Yang <jiaxun.yang@flygoat.com> 写道：
>
> Hi all,
>
> This series fixes some build errors when building with LLVM.
> Some of them was discorved by inspecting the tree.
Hi Thomas,
Do you mind to look into patch 5 and 8 of this series?
While others are mostly fixing problem introduced for “Generic Platform”,
5 and 8 are fixing problems in tree that got frequent reports from CI bots[1] [2].
[1]: https://lore.kernel.org/all/202210180436.ruWBhXRe-lkp@intel.com/
[2]: https://lore.kernel.org/all/alpine.DEB.2.22.394.2210171653540.9136@ramsan.of.borg/
Thanks
Jiaxun
>
> Tested with LLVM + LLVM_IAS={0, 1} and GCC against:
>
> allnoconfig, allmodconfig, 32r2_defconfig, 32r2el_defconfig, 64r2_defconfig,
> 64r2el_defconfig, micro32r2el_defconfig, 32r6el_defconfig, 64r6el_defconfig,
> loongson3_defconfig, lemote2f_defconfig, ip22_defconfig, cavium_octeon_defconfig,
> malta_defconfig
>
> With other patchsets [1] [2] [3] I sent before, on my CI [4], with tree [5].
>
> allmodconfig is still failing but it's not related to MIPS.
>
> [1]: https://patchwork.kernel.org/project/linux-mips/patch/20230407102721.14814-2-jiaxun.yang@flygoat.com/
> [2]: https://patchwork.kernel.org/project/linux-mips/patch/20230408115936.6631-1-jiaxun.yang@flygoat.com/
> [3]: https://patchwork.kernel.org/project/linux-mips/patch/20230407102721.14814-2-jiaxun.yang@flygoat.com/
> [4]: https://github.com/FlyGoat/kernel-action-ci/actions/runs/4649898964/jobs/8228560848
> [5]: https://github.com/FlyGoat/kernel-action-ci/tree/71d3f53e9c44cebf62cfa4ed7ec3b0ce6452555f
>
> Thanks
> Jiaxun
>
> Jiaxun Yang (8):
> MIPS: Replace assembly isa level directives with macros
> MIPS: Set ISA level for MSA control reg helpers
> MIPS: loongson2ef: Add missing break in cs5536_isa
> MIPS: asmmacro: Restore fp macro after undef
> MIPS: mipsregs: Parse fp and sp register by name in parse_r
> MIPS: c-r4k: Use cache_op function for rm7k_erratum31
> MIPS: octeon_switch: Remove duplicated labels
> MIPS: Implement microMIPS MT ASE helpers
>
> arch/mips/alchemy/common/sleeper.S | 6 +-
> arch/mips/include/asm/asmmacro.h | 57 ++--
> arch/mips/include/asm/futex.h | 8 +-
> arch/mips/include/asm/hazards.h | 2 +-
> arch/mips/include/asm/io.h | 4 +-
> arch/mips/include/asm/mipsmtregs.h | 256 +++++++++++-------
> arch/mips/include/asm/mipsregs.h | 63 +++--
> arch/mips/include/asm/msa.h | 2 +
> arch/mips/include/asm/stackframe.h | 2 +-
> arch/mips/kernel/bmips_vec.S | 4 +-
> arch/mips/kernel/csrc-r4k.c | 2 +-
> arch/mips/kernel/genex.S | 8 +-
> arch/mips/kernel/idle.c | 6 +-
> arch/mips/kernel/octeon_switch.S | 6 -
> arch/mips/kernel/r4k_fpu.S | 4 +-
> arch/mips/kernel/syscall.c | 2 +-
> arch/mips/lantiq/clk.c | 2 +-
> arch/mips/lib/csum_partial.S | 5 +-
> .../loongson2ef/common/cs5536/cs5536_isa.c | 2 +-
> arch/mips/mm/c-r4k.c | 33 +--
> arch/mips/mm/cex-oct.S | 2 +-
> arch/mips/mm/sc-ip22.c | 6 +-
> 22 files changed, 277 insertions(+), 205 deletions(-)
>
> --
> 2.39.2 (Apple Git-143)
>
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r
2023-04-09 10:43 ` [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r Jiaxun Yang
@ 2023-04-21 10:48 ` Thomas Bogendoerfer
2023-04-21 11:38 ` Jiaxun Yang
0 siblings, 1 reply; 21+ messages in thread
From: Thomas Bogendoerfer @ 2023-04-21 10:48 UTC (permalink / raw)
To: Jiaxun Yang; +Cc: linux-mips, llvm, ndesaulniers, nathan
On Sun, Apr 09, 2023 at 11:43:06AM +0100, Jiaxun Yang wrote:
> parse_r helper is used to parse register number from oprand,
> it only handles oprand which use number to refer register before.
>
> However compiler may use $gp and $sp to reference register 29 and
> 30. Handle this situation by adding relevant match name.
are you sure the compiler is doing that ? Which compiler is this ?
To me this feels more like missing #defines from asm/regdef.h for
some inline assembly stuff...
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r
2023-04-21 10:48 ` Thomas Bogendoerfer
@ 2023-04-21 11:38 ` Jiaxun Yang
2023-04-21 12:21 ` Thomas Bogendoerfer
0 siblings, 1 reply; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-21 11:38 UTC (permalink / raw)
To: Thomas Bogendoerfer; +Cc: linux-mips, llvm, Nick Desaulniers, Nathan Chancellor
> 2023年4月21日 11:48，Thomas Bogendoerfer <tsbogend@alpha.franken.de> 写道：
>
> On Sun, Apr 09, 2023 at 11:43:06AM +0100, Jiaxun Yang wrote:
>> parse_r helper is used to parse register number from oprand,
>> it only handles oprand which use number to refer register before.
>>
>> However compiler may use $gp and $sp to reference register 29 and
>> 30. Handle this situation by adding relevant match name.
>
> are you sure the compiler is doing that ? Which compiler is this ?
> To me this feels more like missing #defines from asm/regdef.h for
> some inline assembly stuff...
Yes, clang is doing that, see[1].
There is no inline assembly mentioning $fp for cfcmsa but clang is still generating $fp for
cfcmsa.
I was able to reproduce this by dumping assembly generated by clang, but I’m
unable to reproduce it for now, it seems like clang will only allocate $fp in rare cases.
[1]: https://lore.kernel.org/all/202210180436.ruWBhXRe-lkp@intel.com/
Thanks
- Jiaxun
>
> Thomas.
>
> --
> Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
> good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r
2023-04-21 11:38 ` Jiaxun Yang
@ 2023-04-21 12:21 ` Thomas Bogendoerfer
2023-04-21 12:42 ` Jiaxun Yang
0 siblings, 1 reply; 21+ messages in thread
From: Thomas Bogendoerfer @ 2023-04-21 12:21 UTC (permalink / raw)
To: Jiaxun Yang; +Cc: linux-mips, llvm, Nick Desaulniers, Nathan Chancellor
On Fri, Apr 21, 2023 at 12:38:07PM +0100, Jiaxun Yang wrote:
>
>
> > 2023年4月21日 11:48，Thomas Bogendoerfer <tsbogend@alpha.franken.de> 写道：
> >
> > On Sun, Apr 09, 2023 at 11:43:06AM +0100, Jiaxun Yang wrote:
> >> parse_r helper is used to parse register number from oprand,
> >> it only handles oprand which use number to refer register before.
> >>
> >> However compiler may use $gp and $sp to reference register 29 and
> >> 30. Handle this situation by adding relevant match name.
> >
> > are you sure the compiler is doing that ? Which compiler is this ?
> > To me this feels more like missing #defines from asm/regdef.h for
> > some inline assembly stuff...
>
> Yes, clang is doing that, see[1].
>
> There is no inline assembly mentioning $fp for cfcmsa but clang is still generating $fp for
> cfcmsa.
>
> I was able to reproduce this by dumping assembly generated by clang, but I’m
> unable to reproduce it for now, it seems like clang will only allocate $fp in rare cases.
so is this clang miss-behaviour ? If yes fix should be done there.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r
2023-04-21 12:21 ` Thomas Bogendoerfer
@ 2023-04-21 12:42 ` Jiaxun Yang
0 siblings, 0 replies; 21+ messages in thread
From: Jiaxun Yang @ 2023-04-21 12:42 UTC (permalink / raw)
To: Thomas Bogendoerfer; +Cc: linux-mips, llvm, Nick Desaulniers, Nathan Chancellor
> 2023年4月21日 13:21，Thomas Bogendoerfer <tsbogend@alpha.franken.de> 写道：
>
> On Fri, Apr 21, 2023 at 12:38:07PM +0100, Jiaxun Yang wrote:
>>
>>
>>> 2023年4月21日 11:48，Thomas Bogendoerfer <tsbogend@alpha.franken.de> 写道：
>>>
>>> On Sun, Apr 09, 2023 at 11:43:06AM +0100, Jiaxun Yang wrote:
>>>> parse_r helper is used to parse register number from oprand,
>>>> it only handles oprand which use number to refer register before.
>>>>
>>>> However compiler may use $gp and $sp to reference register 29 and
>>>> 30. Handle this situation by adding relevant match name.
>>>
>>> are you sure the compiler is doing that ? Which compiler is this ?
>>> To me this feels more like missing #defines from asm/regdef.h for
>>> some inline assembly stuff...
>>
>> Yes, clang is doing that, see[1].
>>
>> There is no inline assembly mentioning $fp for cfcmsa but clang is still generating $fp for
>> cfcmsa.
>>
>> I was able to reproduce this by dumping assembly generated by clang, but I’m
>> unable to reproduce it for now, it seems like clang will only allocate $fp in rare cases.
>
> so is this clang miss-behaviour ? If yes fix should be done there.
I think it is not forbidden. Clang is doing nothing wrong and as long as assembler is ok with that
parse_r should able to handle it.
Thanks
Jiaxun
>
> Thomas.
>
> --
> Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
> good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 1/8] MIPS: Replace assembly isa level directives with macros
2023-04-20 19:29 ` Jiaxun Yang
2023-04-21 7:41 ` Thomas Bogendoerfer
@ 2023-04-21 13:01 ` Maciej W. Rozycki
1 sibling, 0 replies; 21+ messages in thread
From: Maciej W. Rozycki @ 2023-04-21 13:01 UTC (permalink / raw)
To: Jiaxun Yang
Cc: Nick Desaulniers, linux-mips, llvm, Thomas Bogendoerfer,
Nathan Chancellor
On Thu, 20 Apr 2023, Jiaxun Yang wrote:
> This is a perfect example, strictly speaking VZ extension is a addition of MIPS Release 5,
> LLVM is doing nothing wrong.
> In reality we are happy to run MIPS Release 2 Kernel on Release 5 CPUs, so GAS decided
> to allow it live with any MIPS level.
It wasn't "decided" for GAS (or libopcodes to be exact), it just happened
by chance (or call it sloppiness if you prefer). There used to be effort
outstanding to clean up ISA opcode assignment in GNU binutils for R3 to
R5, but following the collapse of IMG/MTI it has never happened. Cf. e.g.
binutils commit 9785fc2a4d22 ("MIPS: Fix XPA base and Virtualization ASE
instruction handling"), and as I recall there was a discussion on the
binutils mailing list covering these matters too.
Maciej
^ permalink raw reply [flat|nested] 21+ messages in thread
end of thread, other threads:[~2023-04-21 13:08 UTC | newest]
Thread overview: 21+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-04-09 10:43 [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
2023-04-09 10:43 ` [PATCH 1/8] MIPS: Replace assembly isa level directives with macros Jiaxun Yang
2023-04-20 16:43 ` Nick Desaulniers
2023-04-20 19:29 ` Jiaxun Yang
2023-04-21 7:41 ` Thomas Bogendoerfer
2023-04-21 8:18 ` Jiaxun Yang
2023-04-21 13:01 ` Maciej W. Rozycki
2023-04-09 10:43 ` [PATCH 2/8] MIPS: Set ISA level for MSA control reg helpers Jiaxun Yang
2023-04-09 10:43 ` [PATCH 3/8] MIPS: loongson2ef: Add missing break in cs5536_isa Jiaxun Yang
2023-04-12 13:31 ` Thomas Bogendoerfer
2023-04-09 10:43 ` [PATCH 4/8] MIPS: asmmacro: Restore fp macro after undef Jiaxun Yang
2023-04-09 10:43 ` [PATCH 5/8] MIPS: mipsregs: Parse fp and sp register by name in parse_r Jiaxun Yang
2023-04-21 10:48 ` Thomas Bogendoerfer
2023-04-21 11:38 ` Jiaxun Yang
2023-04-21 12:21 ` Thomas Bogendoerfer
2023-04-21 12:42 ` Jiaxun Yang
2023-04-09 10:43 ` [PATCH 6/8] MIPS: c-r4k: Use cache_op function for rm7k_erratum31 Jiaxun Yang
2023-04-09 10:43 ` [PATCH 7/8] MIPS: octeon_switch: Remove duplicated labels Jiaxun Yang
2023-04-12 13:31 ` Thomas Bogendoerfer
2023-04-09 10:43 ` [PATCH 8/8] MIPS: Implement microMIPS MT ASE helpers Jiaxun Yang
2023-04-21 8:31 ` [PATCH 0/7] MIPS: LLVM build fixes Jiaxun Yang
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