diff options
Diffstat (limited to 'target/linux/generic/patches-4.1/133-MIPS-UAPI-Ignore-__arch_swab-16-32-64-when-using-MIP.patch')
| -rw-r--r-- | target/linux/generic/patches-4.1/133-MIPS-UAPI-Ignore-__arch_swab-16-32-64-when-using-MIP.patch | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/target/linux/generic/patches-4.1/133-MIPS-UAPI-Ignore-__arch_swab-16-32-64-when-using-MIP.patch b/target/linux/generic/patches-4.1/133-MIPS-UAPI-Ignore-__arch_swab-16-32-64-when-using-MIP.patch deleted file mode 100644 index ebbe1bbaee..0000000000 --- a/target/linux/generic/patches-4.1/133-MIPS-UAPI-Ignore-__arch_swab-16-32-64-when-using-MIP.patch +++ /dev/null @@ -1,53 +0,0 @@ -From 71a0a72456b48de972d7ed613b06a22a3aa9057f Mon Sep 17 00:00:00 2001 -From: Yousong Zhou <yszhou4tech@gmail.com> -Date: Sat, 26 Sep 2015 13:41:43 +0800 -Subject: [PATCH] MIPS: UAPI: Ignore __arch_swab{16,32,64} when using MIPS16 - -Some GCC versions (e.g. 4.8.3) can incorrectly inline a function with -MIPS32 instructions into another function with MIPS16 code [1], causing -the assembler to genereate incorrect binary code or fail right away -complaining about unrecognized opcode. - -In the case of __arch_swab{16,32}, when inlined by the compiler with -flags `-mips32r2 -mips16 -Os', the assembler can fail with the following -error. - - {standard input}:79: Error: unrecognized opcode `wsbh $2,$2' - -For performance concerns and to workaround the issue already existing in -older compilers, just ignore these 2 functions when compiling with -mips16 enabled. - - [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/11241/ -Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---- - arch/mips/include/uapi/asm/swab.h | 7 ++++--- - 1 file changed, 4 insertions(+), 3 deletions(-) - ---- a/arch/mips/include/uapi/asm/swab.h -+++ b/arch/mips/include/uapi/asm/swab.h -@@ -13,8 +13,9 @@ - - #define __SWAB_64_THRU_32__ - --#if (defined(__mips_isa_rev) && (__mips_isa_rev >= 2)) || \ -- defined(_MIPS_ARCH_LOONGSON3A) -+#if !defined(__mips16) && \ -+ ((defined(__mips_isa_rev) && (__mips_isa_rev >= 2)) || \ -+ defined(_MIPS_ARCH_LOONGSON3A)) - - static inline __attribute_const__ __u16 __arch_swab16(__u16 x) - { -@@ -65,5 +66,5 @@ static inline __attribute_const__ __u64 - } - #define __arch_swab64 __arch_swab64 - #endif /* __mips64 */ --#endif /* MIPS R2 or newer or Loongson 3A */ -+#endif /* (not __mips16) and (MIPS R2 or newer or Loongson 3A) */ - #endif /* _ASM_SWAB_H */ |