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| author | Paul Cercueil <paul@crapouillou.net> | 2021-09-13 22:34:15 +0100 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-09-23 11:23:35 +0200 |
| commit | 67512a8cf5a730938fdb1e48de33edfef6015e03 (patch) | |
| tree | 2e410eb7552601c13b9f8762f66304cfde66d7c7 /arch/mips/include/asm/msa.h | |
| parent | 8e16049333e4c57a3a09cbed03c1191380e27133 (diff) | |
| download | linux-67512a8cf5a730938fdb1e48de33edfef6015e03.tar.gz | |
MIPS: Avoid macro redefinitions
To be able to compile the kernel with LTO, the assembler macros cannot
be declared in the global scope, or the compiler will complain about
redefined macros.
Update the code so that macros are defined then undefined when they are
used.
Note that virt support was added in 2.24 and xpa in 2.25. So we still
need the TOOLCHAIN defines for them.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include/asm/msa.h')
| -rw-r--r-- | arch/mips/include/asm/msa.h | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/arch/mips/include/asm/msa.h b/arch/mips/include/asm/msa.h index e0a3dd52334d..236a49ee2e3e 100644 --- a/arch/mips/include/asm/msa.h +++ b/arch/mips/include/asm/msa.h @@ -162,16 +162,26 @@ static inline void init_msa_upper(void) * to allow compilation with toolchains that do not support MSA. Once all * toolchains in use support MSA these can be removed. */ -_ASM_MACRO_2R(cfcmsa, rd, cs, - _ASM_INSN_IF_MIPS(0x787e0019 | __cs << 11 | __rd << 6) - _ASM_INSN32_IF_MM(0x587e0016 | __cs << 11 | __rd << 6)); -_ASM_MACRO_2R(ctcmsa, cd, rs, - _ASM_INSN_IF_MIPS(0x783e0019 | __rs << 11 | __cd << 6) - _ASM_INSN32_IF_MM(0x583e0016 | __rs << 11 | __cd << 6)); -#define _ASM_SET_MSA "" + +#define _ASM_SET_CFCMSA \ + _ASM_MACRO_2R(cfcmsa, rd, cs, \ + _ASM_INSN_IF_MIPS(0x787e0019 | __cs << 11 | __rd << 6) \ + _ASM_INSN32_IF_MM(0x587e0016 | __cs << 11 | __rd << 6)) +#define _ASM_UNSET_CFCMSA ".purgem cfcmsa\n\t" +#define _ASM_SET_CTCMSA \ + _ASM_MACRO_2R(ctcmsa, cd, rs, \ + _ASM_INSN_IF_MIPS(0x783e0019 | __rs << 11 | __cd << 6) \ + _ASM_INSN32_IF_MM(0x583e0016 | __rs << 11 | __cd << 6)) +#define _ASM_UNSET_CTCMSA ".purgem ctcmsa\n\t" #else /* TOOLCHAIN_SUPPORTS_MSA */ -#define _ASM_SET_MSA ".set\tfp=64\n\t" \ - ".set\tmsa\n\t" +#define _ASM_SET_CFCMSA \ + ".set\tfp=64\n\t" \ + ".set\tmsa\n\t" +#define _ASM_UNSET_CFCMSA +#define _ASM_SET_CTCMSA \ + ".set\tfp=64\n\t" \ + ".set\tmsa\n\t" +#define _ASM_UNSET_CTCMSA #endif #define __BUILD_MSA_CTL_REG(name, cs) \ @@ -180,8 +190,9 @@ static inline unsigned int read_msa_##name(void) \ unsigned int reg; \ __asm__ __volatile__( \ " .set push\n" \ - _ASM_SET_MSA \ + _ASM_SET_CFCMSA \ " cfcmsa %0, $" #cs "\n" \ + _ASM_UNSET_CFCMSA \ " .set pop\n" \ : "=r"(reg)); \ return reg; \ @@ -191,8 +202,9 @@ static inline void write_msa_##name(unsigned int val) \ { \ __asm__ __volatile__( \ " .set push\n" \ - _ASM_SET_MSA \ + _ASM_SET_CTCMSA \ " ctcmsa $" #cs ", %0\n" \ + _ASM_UNSET_CTCMSA \ " .set pop\n" \ : : "r"(val)); \ } |