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206c0dfa3c
The compat signal data structures are required as part of the compat vDSO implementation in order to provide the unwinding information for the sigreturn trampolines. Expose these data structures as part of signal32.h. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Shijith Thotton <sthotton@marvell.com> Tested-by: Andre Przywara <andre.przywara@arm.com> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@armlinux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Huw Davies <huw@codeweavers.com> Link: https://lkml.kernel.org/r/20190621095252.32307-8-vincenzo.frascino@arm.com
84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 ARM Ltd.
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*/
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#ifndef __ASM_SIGNAL32_H
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#define __ASM_SIGNAL32_H
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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#include <linux/compat.h>
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struct compat_sigcontext {
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/* We always set these two fields to 0 */
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compat_ulong_t trap_no;
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compat_ulong_t error_code;
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compat_ulong_t oldmask;
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compat_ulong_t arm_r0;
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compat_ulong_t arm_r1;
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compat_ulong_t arm_r2;
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compat_ulong_t arm_r3;
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compat_ulong_t arm_r4;
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compat_ulong_t arm_r5;
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compat_ulong_t arm_r6;
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compat_ulong_t arm_r7;
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compat_ulong_t arm_r8;
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compat_ulong_t arm_r9;
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compat_ulong_t arm_r10;
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compat_ulong_t arm_fp;
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compat_ulong_t arm_ip;
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compat_ulong_t arm_sp;
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compat_ulong_t arm_lr;
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compat_ulong_t arm_pc;
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compat_ulong_t arm_cpsr;
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compat_ulong_t fault_address;
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};
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struct compat_ucontext {
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compat_ulong_t uc_flags;
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compat_uptr_t uc_link;
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compat_stack_t uc_stack;
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struct compat_sigcontext uc_mcontext;
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compat_sigset_t uc_sigmask;
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int __unused[32 - (sizeof(compat_sigset_t) / sizeof(int))];
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compat_ulong_t uc_regspace[128] __attribute__((__aligned__(8)));
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};
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struct compat_sigframe {
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struct compat_ucontext uc;
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compat_ulong_t retcode[2];
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};
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struct compat_rt_sigframe {
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struct compat_siginfo info;
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struct compat_sigframe sig;
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};
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int compat_setup_frame(int usig, struct ksignal *ksig, sigset_t *set,
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struct pt_regs *regs);
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int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
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struct pt_regs *regs);
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void compat_setup_restart_syscall(struct pt_regs *regs);
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#else
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static inline int compat_setup_frame(int usid, struct ksignal *ksig,
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sigset_t *set, struct pt_regs *regs)
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{
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return -ENOSYS;
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}
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static inline int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set,
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struct pt_regs *regs)
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{
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return -ENOSYS;
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}
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static inline void compat_setup_restart_syscall(struct pt_regs *regs)
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{
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}
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#endif /* CONFIG_COMPAT */
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#endif /* __KERNEL__ */
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#endif /* __ASM_SIGNAL32_H */
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