arch/x86/include/asm/sigframe.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_SIGFRAME_H
   3 #define _ASM_X86_SIGFRAME_H
   4
   5 #include <uapi/asm/sigcontext.h>
   6 #include <asm/siginfo.h>
   7 #include <asm/ucontext.h>
   8 #include <linux/compat.h>
   9
  10 #ifdef CONFIG_X86_32
  11 #define sigframe_ia32           sigframe
  12 #define rt_sigframe_ia32        rt_sigframe
  13 #define ucontext_ia32           ucontext
  14 #else /* !CONFIG_X86_32 */
  15
  16 #ifdef CONFIG_IA32_EMULATION
  17 #include <asm/ia32.h>
  18 #endif /* CONFIG_IA32_EMULATION */
  19
  20 #endif /* CONFIG_X86_32 */
  21
  22 #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
  23 struct sigframe_ia32 {
  24         u32 pretcode;
  25         int sig;
  26         struct sigcontext_32 sc;
  27         /*
  28          * fpstate is unused. fpstate is moved/allocated after
  29          * retcode[] below. This movement allows to have the FP state and the
  30          * future state extensions (xsave) stay together.
  31          * And at the same time retaining the unused fpstate, prevents changing
  32          * the offset of extramask[] in the sigframe and thus prevent any
  33          * legacy application accessing/modifying it.
  34          */
  35         struct _fpstate_32 fpstate_unused;
  36         unsigned int extramask[1];
  37         char retcode[8];
  38         /* fp state follows here */
  39 };
  40
  41 struct rt_sigframe_ia32 {
  42         u32 pretcode;
  43         int sig;
  44         u32 pinfo;
  45         u32 puc;
  46 #ifdef CONFIG_IA32_EMULATION
  47         compat_siginfo_t info;
  48 #else /* !CONFIG_IA32_EMULATION */
  49         struct siginfo info;
  50 #endif /* CONFIG_IA32_EMULATION */
  51         struct ucontext_ia32 uc;
  52         char retcode[8];
  53         /* fp state follows here */
  54 };
  55 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) */
  56
  57 #ifdef CONFIG_X86_64
  58
  59 struct rt_sigframe {
  60         char __user *pretcode;
  61         struct ucontext uc;
  62         struct siginfo info;
  63         /* fp state follows here */
  64 };
  65
  66 #ifdef CONFIG_X86_X32_ABI
  67
  68 struct ucontext_x32 {
  69         unsigned int      uc_flags;
  70         unsigned int      uc_link;
  71         compat_stack_t    uc_stack;
  72         unsigned int      uc__pad0;     /* needed for alignment */
  73         struct sigcontext uc_mcontext;  /* the 64-bit sigcontext type */
  74         compat_sigset_t   uc_sigmask;   /* mask last for extensibility */
  75 };
  76
  77 struct rt_sigframe_x32 {
  78         u64 pretcode;
  79         struct ucontext_x32 uc;
  80         compat_siginfo_t info;
  81         /* fp state follows here */
  82 };
  83
  84 #endif /* CONFIG_X86_X32_ABI */
  85
  86 #endif /* CONFIG_X86_64 */
  87
  88 #endif /* _ASM_X86_SIGFRAME_H */