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 #ifdef CONFIG_IA32_EMULATION 37 unsigned int extramask[_COMPAT_NSIG_WORDS-1]; 38 #else /* !CONFIG_IA32_EMULATION */ 39 unsigned long extramask[_NSIG_WORDS-1]; 40 #endif /* CONFIG_IA32_EMULATION */ 41 char retcode[8]; 42 /* fp state follows here */ 43 }; 44 45 struct rt_sigframe_ia32 { 46 u32 pretcode; 47 int sig; 48 u32 pinfo; 49 u32 puc; 50 #ifdef CONFIG_IA32_EMULATION 51 compat_siginfo_t info; 52 #else /* !CONFIG_IA32_EMULATION */ 53 struct siginfo info; 54 #endif /* CONFIG_IA32_EMULATION */ 55 struct ucontext_ia32 uc; 56 char retcode[8]; 57 /* fp state follows here */ 58 }; 59 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) */ 60 61 #ifdef CONFIG_X86_64 62 63 struct rt_sigframe { 64 char __user *pretcode; 65 struct ucontext uc; 66 struct siginfo info; 67 /* fp state follows here */ 68 }; 69 70 #ifdef CONFIG_X86_X32_ABI 71 72 struct ucontext_x32 { 73 unsigned int uc_flags; 74 unsigned int uc_link; 75 compat_stack_t uc_stack; 76 unsigned int uc__pad0; /* needed for alignment */ 77 struct sigcontext uc_mcontext; /* the 64-bit sigcontext type */ 78 compat_sigset_t uc_sigmask; /* mask last for extensibility */ 79 }; 80 81 struct rt_sigframe_x32 { 82 u64 pretcode; 83 struct ucontext_x32 uc; 84 compat_siginfo_t info; 85 /* fp state follows here */ 86 }; 87 88 #endif /* CONFIG_X86_X32_ABI */ 89 90 #endif /* CONFIG_X86_64 */ 91 92 #endif /* _ASM_X86_SIGFRAME_H */ 93