diff options
Diffstat (limited to 'arch/mips/include/asm/processor.h')
| -rw-r--r-- | arch/mips/include/asm/processor.h | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h index 3605b844ad87..ad70cba8daff 100644 --- a/arch/mips/include/asm/processor.h +++ b/arch/mips/include/asm/processor.h @@ -97,18 +97,48 @@ extern unsigned int vced_count, vcei_count; #define NUM_FPU_REGS 32 -typedef __u64 fpureg_t; +#ifdef CONFIG_CPU_HAS_MSA +# define FPU_REG_WIDTH 128 +#else +# define FPU_REG_WIDTH 64 +#endif + +union fpureg { + __u32 val32[FPU_REG_WIDTH / 32]; + __u64 val64[FPU_REG_WIDTH / 64]; +}; + +#ifdef CONFIG_CPU_LITTLE_ENDIAN +# define FPR_IDX(width, idx) (idx) +#else +# define FPR_IDX(width, idx) ((FPU_REG_WIDTH / (width)) - 1 - (idx)) +#endif + +#define BUILD_FPR_ACCESS(width) \ +static inline u##width get_fpr##width(union fpureg *fpr, unsigned idx) \ +{ \ + return fpr->val##width[FPR_IDX(width, idx)]; \ +} \ + \ +static inline void set_fpr##width(union fpureg *fpr, unsigned idx, \ + u##width val) \ +{ \ + fpr->val##width[FPR_IDX(width, idx)] = val; \ +} + +BUILD_FPR_ACCESS(32) +BUILD_FPR_ACCESS(64) /* - * It would be nice to add some more fields for emulator statistics, but there - * are a number of fixed offsets in offset.h and elsewhere that would have to - * be recalculated by hand. So the additional information will be private to - * the FPU emulator for now. See asm-mips/fpu_emulator.h. + * It would be nice to add some more fields for emulator statistics, + * the additional information is private to the FPU emulator for now. + * See arch/mips/include/asm/fpu_emulator.h. */ struct mips_fpu_struct { - fpureg_t fpr[NUM_FPU_REGS]; + union fpureg fpr[NUM_FPU_REGS]; unsigned int fcr31; + unsigned int msacsr; }; #define NUM_DSP_REGS 6 @@ -284,8 +314,9 @@ struct thread_struct { * Saved FPU/FPU emulator stuff \ */ \ .fpu = { \ - .fpr = {0,}, \ + .fpr = {{{0,},},}, \ .fcr31 = 0, \ + .msacsr = 0, \ }, \ /* \ * FPU affinity state (null if not FPAFF) \ |