From 0b6249567b4ecf6e9d5a8efcf149f3e7cf788cc0 Mon Sep 17 00:00:00 2001 From: Chris Dearman Date: Tue, 8 May 2007 16:09:13 +0100 Subject: [MIPS] FPU hazard handling Move FPU hazard handling to hazards.h and provide proper support for MIPSR2 processors Signed-off-by: Chris Dearman Signed-off-by: Ralf Baechle --- include/asm-mips/hazards.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'include/asm-mips/hazards.h') diff --git a/include/asm-mips/hazards.h b/include/asm-mips/hazards.h index e50c77e69cb..1542f23ab9d 100644 --- a/include/asm-mips/hazards.h +++ b/include/asm-mips/hazards.h @@ -178,4 +178,36 @@ ASMMACRO(back_to_back_c0_hazard, #endif + +/* FPU hazards */ + +#if defined(CONFIG_CPU_SB1) +ASMMACRO(enable_fpu_hazard, + .set push; + .set mips64; + .set noreorder; + _ssnop; + bnezl $0,.+4; + _ssnop + .set pop +) +ASMMACRO(disable_fpu_hazard, +) + +#elif defined(CONFIG_CPU_MIPSR2) +ASMMACRO(enable_fpu_hazard, + _ehb +) +ASMMACRO(disable_fpu_hazard, + _ehb +) +#else +ASMMACRO(enable_fpu_hazard, + nop; nop; nop; nop +) +ASMMACRO(disable_fpu_hazard, + _ehb +) +#endif + #endif /* _ASM_HAZARDS_H */ -- cgit v1.2.3