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| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2008-07-29 10:29:24 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-30 19:49:27 +0200 |
| commit | bdd8caba5ed5bb7ee21c9f061597284ffeb280bf (patch) | |
| tree | 036491dc4b283979f462008bc961800847187937 /include/asm-x86/sigcontext32.h | |
| parent | 9dc89c0f96a6ce6a1b7f9a47dd8bf6f17e2002c9 (diff) | |
| download | talos-op-linux-bdd8caba5ed5bb7ee21c9f061597284ffeb280bf.tar.gz talos-op-linux-bdd8caba5ed5bb7ee21c9f061597284ffeb280bf.zip | |
x86, xsave: struct _fpstate extensions to include extended state information
Bytes 464..511 in the current 512byte layout of fxsave/fxrstor
frame, are reserved for SW usage. On cpu's supporting xsave/xrstor, these bytes
are used to extended the fpstate pointer in the sigcontext, which now includes
the extended state information along with fpstate information.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/sigcontext32.h')
| -rw-r--r-- | include/asm-x86/sigcontext32.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/asm-x86/sigcontext32.h b/include/asm-x86/sigcontext32.h index 4e2ec732dd01..8c347032c2f2 100644 --- a/include/asm-x86/sigcontext32.h +++ b/include/asm-x86/sigcontext32.h @@ -40,7 +40,11 @@ struct _fpstate_ia32 { __u32 reserved; struct _fpxreg _fxsr_st[8]; struct _xmmreg _xmm[8]; /* It's actually 16 */ - __u32 padding[56]; + __u32 padding[44]; + union { + __u32 padding2[12]; + struct _fpx_sw_bytes sw_reserved; + }; }; struct sigcontext_ia32 { |
