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 void __init init_sigframe_size(void); 89 90 #endif /* _ASM_X86_SIGFRAME_H */ 91