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| author | Yousong Zhou <yszhou4tech@gmail.com> | 2015-09-26 07:41:42 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-10-05 11:29:57 +0200 |
| commit | 1bb3bf6226eedee453902e5cf8899ee548f43840 (patch) | |
| tree | f060a3f53728f8b23f9cf5ab74319ac619f5e4fe /arch | |
| parent | Linux 4.3-rc4 (diff) | |
| download | linux-1bb3bf6226eedee453902e5cf8899ee548f43840.tar.xz linux-1bb3bf6226eedee453902e5cf8899ee548f43840.zip | |
Revert "MIPS: UAPI: Fix unrecognized opcode WSBH/DSBH/DSHD when using MIPS16."
This reverts commit e0d8b2ec532852d4b5aabcec3e7611848c32237d.
For at least GCC 4.8.3, adding nomips16 function attribute still cannot
prevent it from being inlined in mips16 context. So revert it first in
preparation for a better workaround.
[1] Inlining nomips16 function into mips16 function can result in
undefined builtins, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55777
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11240/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/uapi/asm/swab.h | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/mips/include/uapi/asm/swab.h b/arch/mips/include/uapi/asm/swab.h index c4ddc4f0d2dc..8f2d184dbe9f 100644 --- a/arch/mips/include/uapi/asm/swab.h +++ b/arch/mips/include/uapi/asm/swab.h @@ -16,13 +16,11 @@ #if (defined(__mips_isa_rev) && (__mips_isa_rev >= 2)) || \ defined(_MIPS_ARCH_LOONGSON3A) -static inline __attribute__((nomips16)) __attribute_const__ - __u16 __arch_swab16(__u16 x) +static inline __attribute_const__ __u16 __arch_swab16(__u16 x) { __asm__( " .set push \n" " .set arch=mips32r2 \n" - " .set nomips16 \n" " wsbh %0, %1 \n" " .set pop \n" : "=r" (x) @@ -32,13 +30,11 @@ static inline __attribute__((nomips16)) __attribute_const__ } #define __arch_swab16 __arch_swab16 -static inline __attribute__((nomips16)) __attribute_const__ - __u32 __arch_swab32(__u32 x) +static inline __attribute_const__ __u32 __arch_swab32(__u32 x) { __asm__( " .set push \n" " .set arch=mips32r2 \n" - " .set nomips16 \n" " wsbh %0, %1 \n" " rotr %0, %0, 16 \n" " .set pop \n" @@ -54,13 +50,11 @@ static inline __attribute__((nomips16)) __attribute_const__ * 64-bit kernel on r2 CPUs. */ #ifdef __mips64 -static inline __attribute__((nomips16)) __attribute_const__ - __u64 __arch_swab64(__u64 x) +static inline __attribute_const__ __u64 __arch_swab64(__u64 x) { __asm__( " .set push \n" " .set arch=mips64r2 \n" - " .set nomips16 \n" " dsbh %0, %1 \n" " dshd %0, %0 \n" " .set pop \n" |