/* * hostdep.h : things which are dependent on the host architecture * * * Written by Peter Maydell * * Copyright (C) 2016 Linaro Limited * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. */ #ifndef QEMU_HOSTDEP_H #define QEMU_HOSTDEP_H /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL #ifndef __ASSEMBLER__ /* These are defined by the safe-syscall.inc.S file */ extern char safe_syscall_start[]; extern char safe_syscall_end[]; /* Adjust the signal context to rewind out of safe-syscall if we're in it */ static inline void rewind_if_in_safe_syscall(void *puc) { struct ucontext *uc = puc; unsigned long *pcreg = &uc->uc_mcontext.gp_regs[PT_NIP]; if (*pcreg > (uintptr_t)safe_syscall_start && *pcreg < (uintptr_t)safe_syscall_end) { *pcreg = (uintptr_t)safe_syscall_start; } } #endif /* __ASSEMBLER__ */ #endif