diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2008-09-21 19:04:55 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-09-21 19:04:55 +0900 |
| commit | e7ab3cd251926d57ee11d7d320e8fb42c882ad22 (patch) | |
| tree | 29dce1711413e010d30fb62c43cbe517a9de95bc /arch/sh/include | |
| parent | 4b4cf7595a8bce9b4dd64c241a8cb7336ecb9489 (diff) | |
sh: Add FPU registers to regset interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include')
| -rw-r--r-- | arch/sh/include/asm/elf.h | 6 | ||||
| -rw-r--r-- | arch/sh/include/asm/fpu.h | 19 |
2 files changed, 22 insertions, 3 deletions
diff --git a/arch/sh/include/asm/elf.h b/arch/sh/include/asm/elf.h index 6b2cec80fd1..4da3a0b1091 100644 --- a/arch/sh/include/asm/elf.h +++ b/arch/sh/include/asm/elf.h @@ -108,10 +108,10 @@ typedef struct user_fpu_struct elf_fpregset_t; #define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC) #define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC) -#if defined(CONFIG_SUPERH32) && !defined(CONFIG_SH_FPU) +#ifdef CONFIG_SUPERH32 /* - * Enable dump using regset for general purpose registers, use this as - * the default once the FPU registers are moved over also. + * Enable dump using regset. + * This covers all of general/DSP/FPU regs. */ #define CORE_DUMP_USE_REGSET #endif diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h index 91462fea150..1d3aee04b5c 100644 --- a/arch/sh/include/asm/fpu.h +++ b/arch/sh/include/asm/fpu.h @@ -30,8 +30,15 @@ static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs) } #endif +struct user_regset; + extern int do_fpu_inst(unsigned short, struct pt_regs *); +extern int fpregs_get(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + void *kbuf, void __user *ubuf); + static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) { preempt_disable(); @@ -50,6 +57,18 @@ static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs) preempt_enable(); } +static inline int init_fpu(struct task_struct *tsk) +{ + if (tsk_used_math(tsk)) { + if ((boot_cpu_data.flags & CPU_HAS_FPU) && tsk == current) + unlazy_fpu(tsk, task_pt_regs(tsk)); + return 0; + } + + set_stopped_child_used_math(tsk); + return 0; +} + #endif /* __ASSEMBLY__ */ #endif /* __ASM_SH_FPU_H */ |