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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-07-24 12:36:56 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-07-24 12:36:56 -0700 |
| commit | b9f12a5d97f652c77ef6803dccd0d40d1290f5be (patch) | |
| tree | 8f58c8620ffef0d350a5ec022feda492a96b179a /arch/mips/include/asm/fpu_emulator.h | |
| parent | 9d8dc3e529a19e427fd379118acd132520935c5d (diff) | |
| parent | 9a3c4145af32125c5ee39c0272662b47307a8323 (diff) | |
Merge tag 'v3.16-rc6' into next
Merge with mainline to bring in changes to MFD to allow merging
ipaq-micro-ts driver.
Diffstat (limited to 'arch/mips/include/asm/fpu_emulator.h')
| -rw-r--r-- | arch/mips/include/asm/fpu_emulator.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/mips/include/asm/fpu_emulator.h b/arch/mips/include/asm/fpu_emulator.h index 2abb587d5ab..0195745b4b1 100644 --- a/arch/mips/include/asm/fpu_emulator.h +++ b/arch/mips/include/asm/fpu_emulator.h @@ -23,9 +23,12 @@ #ifndef _ASM_FPU_EMULATOR_H #define _ASM_FPU_EMULATOR_H +#include <linux/sched.h> #include <asm/break.h> +#include <asm/thread_info.h> #include <asm/inst.h> #include <asm/local.h> +#include <asm/processor.h> #ifdef CONFIG_DEBUG_FS @@ -36,6 +39,11 @@ struct mips_fpu_emulator_stats { local_t cp1ops; local_t cp1xops; local_t errors; + local_t ieee754_inexact; + local_t ieee754_underflow; + local_t ieee754_overflow; + local_t ieee754_zerodiv; + local_t ieee754_invalidop; }; DECLARE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats); @@ -71,4 +79,17 @@ int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, */ #define BREAK_MATH (0x0000000d | (BRK_MEMU << 16)) +#define SIGNALLING_NAN 0x7ff800007ff80000LL + +static inline void fpu_emulator_init_fpu(void) +{ + struct task_struct *t = current; + int i; + + t->thread.fpu.fcr31 = 0; + + for (i = 0; i < 32; i++) + set_fpr64(&t->thread.fpu.fpr[i], 0, SIGNALLING_NAN); +} + #endif /* _ASM_FPU_EMULATOR_H */ |