| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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; |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 36 | unsigned int extramask[1]; |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 */ |