LXR linux/arch/x86/include/asm/sigframe.h

   1#ifndef _ASM_X86_SIGFRAME_H
   2#define _ASM_X86_SIGFRAME_H
   3
   4#include <uapi/asm/sigcontext.h>
   5#include <asm/siginfo.h>
   6#include <asm/ucontext.h>
   7#include <linux/compat.h>
   8
   9#ifdef CONFIG_X86_32
  10#define sigframe_ia32           sigframe
  11#define rt_sigframe_ia32        rt_sigframe
  12#define ucontext_ia32           ucontext
  13#else /* !CONFIG_X86_32 */
  14
  15#ifdef CONFIG_IA32_EMULATION
  16#include <asm/ia32.h>
  17#endif /* CONFIG_IA32_EMULATION */
  18
  19#endif /* CONFIG_X86_32 */
  20
  21#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
  22struct sigframe_ia32 {
  23        u32 pretcode;
  24        int sig;
  25        struct sigcontext_32 sc;
  26        /*
  27         * fpstate is unused. fpstate is moved/allocated after
  28         * retcode[] below. This movement allows to have the FP state and the
  29         * future state extensions (xsave) stay together.
  30         * And at the same time retaining the unused fpstate, prevents changing
  31         * the offset of extramask[] in the sigframe and thus prevent any
  32         * legacy application accessing/modifying it.
  33         */
  34        struct _fpstate_32 fpstate_unused;
  35#ifdef CONFIG_IA32_EMULATION
  36        unsigned int extramask[_COMPAT_NSIG_WORDS-1];
  37#else /* !CONFIG_IA32_EMULATION */
  38        unsigned long extramask[_NSIG_WORDS-1];
  39#endif /* CONFIG_IA32_EMULATION */
  40        char retcode[8];
  41        /* fp state follows here */
  42};
  43
  44struct rt_sigframe_ia32 {
  45        u32 pretcode;
  46        int sig;
  47        u32 pinfo;
  48        u32 puc;
  49#ifdef CONFIG_IA32_EMULATION
  50        compat_siginfo_t info;
  51#else /* !CONFIG_IA32_EMULATION */
  52        struct siginfo info;
  53#endif /* CONFIG_IA32_EMULATION */
  54        struct ucontext_ia32 uc;
  55        char retcode[8];
  56        /* fp state follows here */
  57};
  58#endif /* defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) */
  59
  60#ifdef CONFIG_X86_64
  61
  62struct rt_sigframe {
  63        char __user *pretcode;
  64        struct ucontext uc;
  65        struct siginfo info;
  66        /* fp state follows here */
  67};
  68
  69#ifdef CONFIG_X86_X32_ABI
  70
  71struct ucontext_x32 {
  72        unsigned int      uc_flags;
  73        unsigned int      uc_link;
  74        compat_stack_t    uc_stack;
  75        unsigned int      uc__pad0;     /* needed for alignment */
  76        struct sigcontext uc_mcontext;  /* the 64-bit sigcontext type */
  77        compat_sigset_t   uc_sigmask;   /* mask last for extensibility */
  78};
  79
  80struct rt_sigframe_x32 {
  81        u64 pretcode;
  82        struct ucontext_x32 uc;
  83        compat_siginfo_t info;
  84        /* fp state follows here */
  85};
  86
  87#endif /* CONFIG_X86_X32_ABI */
  88
  89#endif /* CONFIG_X86_64 */
  90
  91#endif /* _ASM_X86_SIGFRAME_H */
  92