linux-user/host/x86: Populate host_signal.h
Split host_signal_pc and host_signal_write out of user-exec.c. Drop the *BSD code, to be re-created under bsd-user/ later. Reviewed-by: Warner Losh <imp@bsdimp.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Richard Henderson
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e6037d04c5
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85442fce49
@ -29,19 +29,6 @@
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#include "trace/trace-root.h"
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#include "internal.h"
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#undef EAX
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#undef ECX
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#undef EDX
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#undef EBX
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#undef ESP
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#undef EBP
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#undef ESI
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#undef EDI
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#undef EIP
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#ifdef __linux__
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#include <sys/ucontext.h>
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#endif
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__thread uintptr_t helper_retaddr;
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//#define DEBUG_SIGNAL
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@ -266,123 +253,7 @@ void *probe_access(CPUArchState *env, target_ulong addr, int size,
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return size ? g2h(env_cpu(env), addr) : NULL;
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}
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#if defined(__i386__)
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#if defined(__NetBSD__)
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#include <ucontext.h>
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#include <machine/trap.h>
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#define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP])
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#define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#define PAGE_FAULT_TRAP T_PAGEFLT
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#elif defined(__FreeBSD__) || defined(__DragonFly__)
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#include <ucontext.h>
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#include <machine/trap.h>
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#define EIP_sig(context) (*((unsigned long *)&(context)->uc_mcontext.mc_eip))
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#define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
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#define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
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#define MASK_sig(context) ((context)->uc_sigmask)
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#define PAGE_FAULT_TRAP T_PAGEFLT
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#elif defined(__OpenBSD__)
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#include <machine/trap.h>
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#define EIP_sig(context) ((context)->sc_eip)
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#define TRAP_sig(context) ((context)->sc_trapno)
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#define ERROR_sig(context) ((context)->sc_err)
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#define MASK_sig(context) ((context)->sc_mask)
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#define PAGE_FAULT_TRAP T_PAGEFLT
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#else
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#define EIP_sig(context) ((context)->uc_mcontext.gregs[REG_EIP])
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#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#define PAGE_FAULT_TRAP 0xe
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#endif
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int cpu_signal_handler(int host_signum, void *pinfo,
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void *puc)
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{
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siginfo_t *info = pinfo;
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#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
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ucontext_t *uc = puc;
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#elif defined(__OpenBSD__)
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struct sigcontext *uc = puc;
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#else
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ucontext_t *uc = puc;
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#endif
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unsigned long pc;
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int trapno;
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#ifndef REG_EIP
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/* for glibc 2.1 */
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#define REG_EIP EIP
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#define REG_ERR ERR
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#define REG_TRAPNO TRAPNO
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#endif
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pc = EIP_sig(uc);
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trapno = TRAP_sig(uc);
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return handle_cpu_signal(pc, info,
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trapno == PAGE_FAULT_TRAP ?
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(ERROR_sig(uc) >> 1) & 1 : 0,
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&MASK_sig(uc));
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}
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#elif defined(__x86_64__)
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#ifdef __NetBSD__
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#include <machine/trap.h>
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#define PC_sig(context) _UC_MACHINE_PC(context)
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#define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#define PAGE_FAULT_TRAP T_PAGEFLT
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#elif defined(__OpenBSD__)
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#include <machine/trap.h>
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#define PC_sig(context) ((context)->sc_rip)
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#define TRAP_sig(context) ((context)->sc_trapno)
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#define ERROR_sig(context) ((context)->sc_err)
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#define MASK_sig(context) ((context)->sc_mask)
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#define PAGE_FAULT_TRAP T_PAGEFLT
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#elif defined(__FreeBSD__) || defined(__DragonFly__)
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#include <ucontext.h>
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#include <machine/trap.h>
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#define PC_sig(context) (*((unsigned long *)&(context)->uc_mcontext.mc_rip))
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#define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
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#define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
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#define MASK_sig(context) ((context)->uc_sigmask)
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#define PAGE_FAULT_TRAP T_PAGEFLT
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#else
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#define PC_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
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#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#define PAGE_FAULT_TRAP 0xe
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#endif
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int cpu_signal_handler(int host_signum, void *pinfo,
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void *puc)
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{
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siginfo_t *info = pinfo;
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unsigned long pc;
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#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
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ucontext_t *uc = puc;
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#elif defined(__OpenBSD__)
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struct sigcontext *uc = puc;
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#else
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ucontext_t *uc = puc;
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#endif
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pc = PC_sig(uc);
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return handle_cpu_signal(pc, info,
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TRAP_sig(uc) == PAGE_FAULT_TRAP ?
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(ERROR_sig(uc) >> 1) & 1 : 0,
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&MASK_sig(uc));
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}
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#elif defined(_ARCH_PPC)
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#if defined(_ARCH_PPC)
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/***********************************************************************
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* signal context platform-specific definitions
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@ -893,11 +764,6 @@ int cpu_signal_handler(int host_signum, void *pinfo,
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return handle_cpu_signal(pc, info, is_write, &uc->uc_sigmask);
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}
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#else
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#error host CPU specific signal handler needed
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#endif
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/* The softmmu versions of these helpers are in cputlb.c. */
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@ -1 +1,25 @@
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#define HOST_SIGNAL_PLACEHOLDER
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/*
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* host-signal.h: signal info dependent on the host architecture
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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* Copyright (c) 2021 Linaro Limited
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef I386_HOST_SIGNAL_H
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#define I386_HOST_SIGNAL_H
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static inline uintptr_t host_signal_pc(ucontext_t *uc)
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{
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return uc->uc_mcontext.gregs[REG_EIP];
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}
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static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
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{
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return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe
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&& (uc->uc_mcontext.gregs[REG_ERR] & 0x2);
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}
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#endif
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@ -1 +1 @@
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#define HOST_SIGNAL_PLACEHOLDER
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#include "../x86_64/host-signal.h"
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@ -1 +1,24 @@
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#define HOST_SIGNAL_PLACEHOLDER
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/*
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* host-signal.h: signal info dependent on the host architecture
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*
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* Copyright (C) 2021 Linaro Limited
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef X86_64_HOST_SIGNAL_H
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#define X86_64_HOST_SIGNAL_H
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static inline uintptr_t host_signal_pc(ucontext_t *uc)
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{
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return uc->uc_mcontext.gregs[REG_RIP];
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}
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static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
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{
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return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe
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&& (uc->uc_mcontext.gregs[REG_ERR] & 0x2);
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}
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#endif
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