diff options
| author | Michael Neuling <mikey@neuling.org> | 2008-06-25 08:07:18 +0400 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-07-01 05:28:50 +0400 |
| commit | ce48b2100785e5ca629fb3aa8e3b50aca808f692 (patch) | |
| tree | 63532ff7cc68b18ca4902bd10e03fcbaaf01cade /include/asm-powerpc/elf.h | |
| parent | 72ffff5b1792b0fa4d40a8e2f3276fff999820ec (diff) | |
| download | linux-ce48b2100785e5ca629fb3aa8e3b50aca808f692.tar.xz | |
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/elf.h')
| -rw-r--r-- | include/asm-powerpc/elf.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/asm-powerpc/elf.h b/include/asm-powerpc/elf.h index d1e3bda0625d..746e53d60cbe 100644 --- a/include/asm-powerpc/elf.h +++ b/include/asm-powerpc/elf.h @@ -109,6 +109,7 @@ typedef elf_gregset_t32 compat_elf_gregset_t; #ifdef __powerpc64__ # define ELF_NVRREG32 33 /* includes vscr & vrsave stuffed together */ # define ELF_NVRREG 34 /* includes vscr & vrsave in split vectors */ +# define ELF_NVSRHALFREG 32 /* Half the vsx registers */ # define ELF_GREG_TYPE elf_greg_t64 #else # define ELF_NEVRREG 34 /* includes acc (as 2) */ @@ -158,6 +159,7 @@ typedef __vector128 elf_vrreg_t; typedef elf_vrreg_t elf_vrregset_t[ELF_NVRREG]; #ifdef __powerpc64__ typedef elf_vrreg_t elf_vrregset_t32[ELF_NVRREG32]; +typedef elf_fpreg_t elf_vsrreghalf_t32[ELF_NVSRHALFREG]; #endif #ifdef __KERNEL__ @@ -219,8 +221,8 @@ extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *); typedef elf_vrregset_t elf_fpxregset_t; #ifdef CONFIG_ALTIVEC -extern int dump_task_altivec(struct task_struct *, elf_vrregset_t *vrregs); -#define ELF_CORE_COPY_XFPREGS(tsk, regs) dump_task_altivec(tsk, regs) +extern int dump_task_vector(struct task_struct *, elf_vrregset_t *vrregs); +#define ELF_CORE_COPY_XFPREGS(tsk, regs) dump_task_vector(tsk, regs) #define ELF_CORE_XFPREG_TYPE NT_PPC_VMX #endif |