diff options
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/uapi/asm/sigcontext32.h | 110 |
1 files changed, 58 insertions, 52 deletions
diff --git a/arch/x86/include/uapi/asm/sigcontext32.h b/arch/x86/include/uapi/asm/sigcontext32.h index ff7826c41a1c..6ff4fbab650e 100644 --- a/arch/x86/include/uapi/asm/sigcontext32.h +++ b/arch/x86/include/uapi/asm/sigcontext32.h @@ -1,79 +1,85 @@ #ifndef _ASM_X86_SIGCONTEXT32_H #define _ASM_X86_SIGCONTEXT32_H +/* Signal context definitions for compat 32-bit programs: */ + #include <linux/types.h> #include <asm/sigcontext.h> -/* signal context for 32bit programs. */ - -#define X86_FXSR_MAGIC 0x0000 - +/* 10-byte legacy floating point register: */ struct _fpreg { - unsigned short significand[4]; - unsigned short exponent; + unsigned short significand[4]; + unsigned short exponent; }; +/* 16-byte floating point register: */ struct _fpxreg { - unsigned short significand[4]; - unsigned short exponent; - unsigned short padding[3]; + unsigned short significand[4]; + unsigned short exponent; + unsigned short padding[3]; }; +/* 16-byte XMM vector register: */ struct _xmmreg { __u32 element[4]; }; -/* FSAVE frame with extensions */ +#define X86_FXSR_MAGIC 0x0000 + +/* FXSAVE frame: FSAVE frame with extensions */ struct _fpstate_ia32 { - /* Regular FPU environment */ - __u32 cw; - __u32 sw; - __u32 tag; /* not compatible to 64bit twd */ - __u32 ipoff; - __u32 cssel; - __u32 dataoff; - __u32 datasel; - struct _fpreg _st[8]; - unsigned short status; - unsigned short magic; /* 0xffff = regular FPU data only */ + /* Regular FPU environment: */ + __u32 cw; + __u32 sw; + __u32 tag; /* Not compatible with the 64-bit frame */ + __u32 ipoff; + __u32 cssel; + __u32 dataoff; + __u32 datasel; + struct _fpreg _st[8]; + unsigned short status; + unsigned short magic; /* 0xffff: regular FPU data only */ + /* 0x0000: FXSR data */ - /* FXSR FPU environment */ - __u32 _fxsr_env[6]; - __u32 mxcsr; - __u32 reserved; - struct _fpxreg _fxsr_st[8]; - struct _xmmreg _xmm[8]; /* It's actually 16 */ - __u32 padding[44]; + /* Extended FXSR FPU environment: */ + __u32 _fxsr_env[6]; + __u32 mxcsr; + __u32 reserved; + struct _fpxreg _fxsr_st[8]; + struct _xmmreg _xmm[8]; /* The first 8 XMM registers */ + __u32 padding[44]; /* The second 8 XMM registers plus padding */ union { - __u32 padding2[12]; - struct _fpx_sw_bytes sw_reserved; + __u32 padding2[12]; + /* Might encode xstate extensions, see asm/sigcontext.h: */ + struct _fpx_sw_bytes sw_reserved; }; }; +/* 32-bit compat sigcontext: */ struct sigcontext_ia32 { - unsigned short gs, __gsh; - unsigned short fs, __fsh; - unsigned short es, __esh; - unsigned short ds, __dsh; - unsigned int di; - unsigned int si; - unsigned int bp; - unsigned int sp; - unsigned int bx; - unsigned int dx; - unsigned int cx; - unsigned int ax; - unsigned int trapno; - unsigned int err; - unsigned int ip; - unsigned short cs, __csh; - unsigned int flags; - unsigned int sp_at_signal; - unsigned short ss, __ssh; - unsigned int fpstate; /* really (struct _fpstate_ia32 *) */ - unsigned int oldmask; - unsigned int cr2; + unsigned short gs, __gsh; + unsigned short fs, __fsh; + unsigned short es, __esh; + unsigned short ds, __dsh; + unsigned int di; + unsigned int si; + unsigned int bp; + unsigned int sp; + unsigned int bx; + unsigned int dx; + unsigned int cx; + unsigned int ax; + unsigned int trapno; + unsigned int err; + unsigned int ip; + unsigned short cs, __csh; + unsigned int flags; + unsigned int sp_at_signal; + unsigned short ss, __ssh; + unsigned int fpstate; /* Pointer to 'struct _fpstate_ia32' */ + unsigned int oldmask; + unsigned int cr2; }; #endif /* _ASM_X86_SIGCONTEXT32_H */ |