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MIPS: math-emu: Inline fpu_emulator_init_fpu()

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2014-04-28 22:34:01 +02:00
parent 3f7cac416b
commit e0cc3a42eb
4 changed files with 21 additions and 46 deletions
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7
arch/mips/include/asm/fpu.h
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@@ -17,6 +17,7 @@
#include <asm/mipsregs.h>
#include <asm/cpu.h>
#include <asm/cpu-features.h>
#include <asm/fpu_emulator.h>
#include <asm/hazards.h>
#include <asm/processor.h>
#include <asm/current.h>
@@ -28,7 +29,6 @@
struct sigcontext;
struct sigcontext32;
extern void fpu_emulator_init_fpu(void);
extern void _init_fpu(void);
extern void _save_fp(struct task_struct *);
extern void _restore_fp(struct task_struct *);
@@ -156,15 +156,16 @@ static inline int init_fpu(void)
int ret = 0;
preempt_disable();
if (cpu_has_fpu) {
ret = __own_fpu();
if (!ret)
_init_fpu();
} else {
} else
fpu_emulator_init_fpu();
}
preempt_enable();
return ret;
}

16
arch/mips/include/asm/fpu_emulator.h
View File

@@ -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
@@ -71,4 +74,17 @@ 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 */