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| author | Michael Neuling <mikey@neuling.org> | 2008-06-25 14:07:18 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-07-01 11:28:50 +1000 |
| commit | ce48b2100785e5ca629fb3aa8e3b50aca808f692 (patch) | |
| tree | 63532ff7cc68b18ca4902bd10e03fcbaaf01cade /include/asm-powerpc/system.h | |
| parent | 72ffff5b1792b0fa4d40a8e2f3276fff999820ec (diff) | |
| download | linux-ce48b2100785e5ca629fb3aa8e3b50aca808f692.tar.gz linux-ce48b2100785e5ca629fb3aa8e3b50aca808f692.tar.bz2 linux-ce48b2100785e5ca629fb3aa8e3b50aca808f692.zip | |
powerpc: Add VSX context save/restore, ptrace and signal support
This patch extends the floating point save and restore code to use the
VSX load/stores when VSX is available. This will make FP context
save/restore marginally slower on FP only code, when VSX is available,
as it has to load/store 128bits rather than just 64bits.
Mixing FP, VMX and VSX code will get constant architected state.
The signals interface is extended to enable access to VSR 0-31
doubleword 1 after discussions with tool chain maintainers. Backward
compatibility is maintained.
The ptrace interface is also extended to allow access to VSR 0-31 full
registers.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/system.h')
| -rw-r--r-- | include/asm-powerpc/system.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h index 2642a92b724f..0c12c66733f6 100644 --- a/include/asm-powerpc/system.h +++ b/include/asm-powerpc/system.h @@ -139,6 +139,7 @@ extern void enable_kernel_altivec(void); extern void giveup_altivec(struct task_struct *); extern void load_up_altivec(struct task_struct *); extern int emulate_altivec(struct pt_regs *); +extern void giveup_vsx(struct task_struct *); extern void enable_kernel_spe(void); extern void giveup_spe(struct task_struct *); extern void load_up_spe(struct task_struct *); @@ -162,6 +163,14 @@ static inline void flush_altivec_to_thread(struct task_struct *t) } #endif +#ifdef CONFIG_VSX +extern void flush_vsx_to_thread(struct task_struct *); +#else +static inline void flush_vsx_to_thread(struct task_struct *t) +{ +} +#endif + #ifdef CONFIG_SPE extern void flush_spe_to_thread(struct task_struct *); #else |