971 lines
32 KiB
C
971 lines
32 KiB
C
/*
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* x86-64 signal handling routines
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*
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* Copyright 1999, 2005 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifdef __x86_64__
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_SIGNAL_H
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# include <sys/signal.h>
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#endif
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#define NONAMELESSUNION
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winternl.h"
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#include "wine/library.h"
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#include "wine/exception.h"
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#include "ntdll_misc.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(seh);
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/***********************************************************************
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* signal context platform-specific definitions
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*/
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#ifdef linux
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#include <asm/prctl.h>
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extern int arch_prctl(int func, void *ptr);
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#define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
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#define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
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#define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
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#define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
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#define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
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#define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
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#define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
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#define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
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#define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
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#define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
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#define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
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#define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
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#define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
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#define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
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#define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
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#define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
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#define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
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#define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
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#define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
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#define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
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#define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
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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 FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
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#endif /* linux */
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#if defined(__NetBSD__)
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# include <sys/ucontext.h>
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# include <sys/types.h>
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# include <signal.h>
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#define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
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#define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
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#define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
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#define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
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#define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
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#define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
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#define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
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#define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
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#define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
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#define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
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#define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
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#define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
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#define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
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#define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
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#define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
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#define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
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#define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
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#define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
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#define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
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#define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
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#define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
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#define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
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#define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
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#define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
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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 FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
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#endif /* __NetBSD__ */
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enum i386_trap_code
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{
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TRAP_x86_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
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TRAP_x86_DIVIDE = 0, /* Division by zero exception */
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TRAP_x86_TRCTRAP = 1, /* Single-step exception */
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TRAP_x86_NMI = 2, /* NMI interrupt */
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TRAP_x86_BPTFLT = 3, /* Breakpoint exception */
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TRAP_x86_OFLOW = 4, /* Overflow exception */
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TRAP_x86_BOUND = 5, /* Bound range exception */
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TRAP_x86_PRIVINFLT = 6, /* Invalid opcode exception */
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TRAP_x86_DNA = 7, /* Device not available exception */
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TRAP_x86_DOUBLEFLT = 8, /* Double fault exception */
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TRAP_x86_FPOPFLT = 9, /* Coprocessor segment overrun */
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TRAP_x86_TSSFLT = 10, /* Invalid TSS exception */
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TRAP_x86_SEGNPFLT = 11, /* Segment not present exception */
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TRAP_x86_STKFLT = 12, /* Stack fault */
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TRAP_x86_PROTFLT = 13, /* General protection fault */
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TRAP_x86_PAGEFLT = 14, /* Page fault */
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TRAP_x86_ARITHTRAP = 16, /* Floating point exception */
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TRAP_x86_ALIGNFLT = 17, /* Alignment check exception */
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TRAP_x86_MCHK = 18, /* Machine check exception */
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TRAP_x86_CACHEFLT = 19 /* Cache flush exception */
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};
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typedef int (*wine_signal_handler)(unsigned int sig);
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static wine_signal_handler handlers[256];
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/***********************************************************************
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* dispatch_signal
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*/
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static inline int dispatch_signal(unsigned int sig)
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{
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if (handlers[sig] == NULL) return 0;
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return handlers[sig](sig);
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}
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/***********************************************************************
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* save_context
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*
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* Set the register values from a sigcontext.
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*/
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static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
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{
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context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS;
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context->Rax = RAX_sig(sigcontext);
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context->Rcx = RCX_sig(sigcontext);
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context->Rdx = RDX_sig(sigcontext);
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context->Rbx = RBX_sig(sigcontext);
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context->Rsp = RSP_sig(sigcontext);
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context->Rbp = RBP_sig(sigcontext);
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context->Rsi = RSI_sig(sigcontext);
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context->Rdi = RDI_sig(sigcontext);
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context->R8 = R8_sig(sigcontext);
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context->R9 = R9_sig(sigcontext);
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context->R10 = R10_sig(sigcontext);
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context->R11 = R11_sig(sigcontext);
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context->R12 = R12_sig(sigcontext);
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context->R13 = R13_sig(sigcontext);
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context->R14 = R14_sig(sigcontext);
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context->R15 = R15_sig(sigcontext);
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context->Rip = RIP_sig(sigcontext);
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context->SegCs = CS_sig(sigcontext);
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context->SegFs = FS_sig(sigcontext);
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context->SegGs = GS_sig(sigcontext);
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context->EFlags = EFL_sig(sigcontext);
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#ifdef DS_sig
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context->SegDs = DS_sig(sigcontext);
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#else
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__asm__("movw %%ds,%0" : "=m" (context->SegDs));
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#endif
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#ifdef ES_sig
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context->SegEs = ES_sig(sigcontext);
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#else
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__asm__("movw %%es,%0" : "=m" (context->SegEs));
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#endif
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#ifdef SS_sig
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context->SegSs = SS_sig(sigcontext);
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#else
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__asm__("movw %%ss,%0" : "=m" (context->SegSs));
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#endif
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context->MxCsr = 0; /* FIXME */
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if (FPU_sig(sigcontext))
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{
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context->ContextFlags |= CONTEXT_FLOATING_POINT;
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context->u.FltSave = *FPU_sig(sigcontext);
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}
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}
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/***********************************************************************
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* restore_context
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*
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* Build a sigcontext from the register values.
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*/
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static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
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{
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RAX_sig(sigcontext) = context->Rax;
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RCX_sig(sigcontext) = context->Rcx;
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RDX_sig(sigcontext) = context->Rdx;
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RBX_sig(sigcontext) = context->Rbx;
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RSP_sig(sigcontext) = context->Rsp;
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RBP_sig(sigcontext) = context->Rbp;
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RSI_sig(sigcontext) = context->Rsi;
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RDI_sig(sigcontext) = context->Rdi;
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R8_sig(sigcontext) = context->R8;
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R9_sig(sigcontext) = context->R9;
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R10_sig(sigcontext) = context->R10;
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R11_sig(sigcontext) = context->R11;
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R12_sig(sigcontext) = context->R12;
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R13_sig(sigcontext) = context->R13;
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R14_sig(sigcontext) = context->R14;
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R15_sig(sigcontext) = context->R15;
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RIP_sig(sigcontext) = context->Rip;
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CS_sig(sigcontext) = context->SegCs;
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FS_sig(sigcontext) = context->SegFs;
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GS_sig(sigcontext) = context->SegGs;
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EFL_sig(sigcontext) = context->EFlags;
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#ifdef DS_sig
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DS_sig(sigcontext) = context->SegDs;
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#endif
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#ifdef ES_sig
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ES_sig(sigcontext) = context->SegEs;
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#endif
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#ifdef SS_sig
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SS_sig(sigcontext) = context->SegSs;
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#endif
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if (FPU_sig(sigcontext)) *FPU_sig(sigcontext) = context->u.FltSave;
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}
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/***********************************************************************
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* RtlCaptureContext (NTDLL.@)
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*/
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void WINAPI __regs_RtlCaptureContext( CONTEXT *context, CONTEXT *regs )
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{
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*context = *regs;
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}
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DEFINE_REGS_ENTRYPOINT( RtlCaptureContext, 1 )
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/***********************************************************************
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* set_cpu_context
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*
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* Set the new CPU context.
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*/
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void set_cpu_context( const CONTEXT *context )
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{
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extern void CDECL __wine_restore_regs( const CONTEXT * ) DECLSPEC_NORETURN;
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__wine_restore_regs( context );
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}
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/***********************************************************************
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* copy_context
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*
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* Copy a register context according to the flags.
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*/
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void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
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{
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flags &= ~CONTEXT_AMD64; /* get rid of CPU id */
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if (flags & CONTEXT_CONTROL)
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{
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to->Rbp = from->Rbp;
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to->Rip = from->Rip;
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to->Rsp = from->Rsp;
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to->SegCs = from->SegCs;
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to->SegSs = from->SegSs;
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to->EFlags = from->EFlags;
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to->MxCsr = from->MxCsr;
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}
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if (flags & CONTEXT_INTEGER)
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{
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to->Rax = from->Rax;
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to->Rcx = from->Rcx;
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to->Rdx = from->Rdx;
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to->Rbx = from->Rbx;
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to->Rsi = from->Rsi;
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to->Rdi = from->Rdi;
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to->R8 = from->R8;
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to->R9 = from->R9;
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to->R10 = from->R10;
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to->R11 = from->R11;
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to->R12 = from->R12;
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to->R13 = from->R13;
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to->R14 = from->R14;
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to->R15 = from->R15;
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}
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if (flags & CONTEXT_SEGMENTS)
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{
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to->SegDs = from->SegDs;
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to->SegEs = from->SegEs;
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to->SegFs = from->SegFs;
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to->SegGs = from->SegGs;
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}
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if (flags & CONTEXT_FLOATING_POINT)
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{
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to->u.FltSave = from->u.FltSave;
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}
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if (flags & CONTEXT_DEBUG_REGISTERS)
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{
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to->Dr0 = from->Dr0;
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to->Dr1 = from->Dr1;
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to->Dr2 = from->Dr2;
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to->Dr3 = from->Dr3;
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to->Dr6 = from->Dr6;
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to->Dr7 = from->Dr7;
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}
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}
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/***********************************************************************
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* context_to_server
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*
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* Convert a register context to the server format.
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*/
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NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
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{
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DWORD flags = from->ContextFlags & ~CONTEXT_AMD64; /* get rid of CPU id */
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memset( to, 0, sizeof(*to) );
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to->cpu = CPU_x86_64;
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if (flags & CONTEXT_CONTROL)
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{
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to->flags |= SERVER_CTX_CONTROL;
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to->ctl.x86_64_regs.rbp = from->Rbp;
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to->ctl.x86_64_regs.rip = from->Rip;
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to->ctl.x86_64_regs.rsp = from->Rsp;
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to->ctl.x86_64_regs.cs = from->SegCs;
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to->ctl.x86_64_regs.ss = from->SegSs;
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to->ctl.x86_64_regs.flags = from->EFlags;
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to->ctl.x86_64_regs.mxcsr = from->MxCsr;
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}
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if (flags & CONTEXT_INTEGER)
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{
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to->flags |= SERVER_CTX_INTEGER;
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to->integer.x86_64_regs.rax = from->Rax;
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to->integer.x86_64_regs.rcx = from->Rcx;
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to->integer.x86_64_regs.rdx = from->Rdx;
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to->integer.x86_64_regs.rbx = from->Rbx;
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to->integer.x86_64_regs.rsi = from->Rsi;
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to->integer.x86_64_regs.rdi = from->Rdi;
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to->integer.x86_64_regs.r8 = from->R8;
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to->integer.x86_64_regs.r9 = from->R9;
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to->integer.x86_64_regs.r10 = from->R10;
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to->integer.x86_64_regs.r11 = from->R11;
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to->integer.x86_64_regs.r12 = from->R12;
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to->integer.x86_64_regs.r13 = from->R13;
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to->integer.x86_64_regs.r14 = from->R14;
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to->integer.x86_64_regs.r15 = from->R15;
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}
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if (flags & CONTEXT_SEGMENTS)
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{
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to->flags |= SERVER_CTX_SEGMENTS;
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to->seg.x86_64_regs.ds = from->SegDs;
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to->seg.x86_64_regs.es = from->SegEs;
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to->seg.x86_64_regs.fs = from->SegFs;
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to->seg.x86_64_regs.gs = from->SegGs;
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}
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if (flags & CONTEXT_FLOATING_POINT)
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{
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to->flags |= SERVER_CTX_FLOATING_POINT;
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memcpy( to->fp.x86_64_regs.fpregs, &from->u.FltSave, sizeof(to->fp.x86_64_regs.fpregs) );
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}
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if (flags & CONTEXT_DEBUG_REGISTERS)
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{
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to->flags |= SERVER_CTX_DEBUG_REGISTERS;
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to->debug.x86_64_regs.dr0 = from->Dr0;
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to->debug.x86_64_regs.dr1 = from->Dr1;
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to->debug.x86_64_regs.dr2 = from->Dr2;
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to->debug.x86_64_regs.dr3 = from->Dr3;
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to->debug.x86_64_regs.dr6 = from->Dr6;
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to->debug.x86_64_regs.dr7 = from->Dr7;
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}
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return STATUS_SUCCESS;
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}
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|
|
|
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/***********************************************************************
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|
* context_from_server
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*
|
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* Convert a register context from the server format.
|
|
*/
|
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NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
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|
{
|
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if (from->cpu != CPU_x86_64) return STATUS_INVALID_PARAMETER;
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|
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to->ContextFlags = CONTEXT_AMD64;
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if (from->flags & SERVER_CTX_CONTROL)
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{
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to->ContextFlags |= CONTEXT_CONTROL;
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to->Rbp = from->ctl.x86_64_regs.rbp;
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to->Rip = from->ctl.x86_64_regs.rip;
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to->Rsp = from->ctl.x86_64_regs.rsp;
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to->SegCs = from->ctl.x86_64_regs.cs;
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to->SegSs = from->ctl.x86_64_regs.ss;
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to->EFlags = from->ctl.x86_64_regs.flags;
|
|
to->MxCsr = from->ctl.x86_64_regs.mxcsr;
|
|
}
|
|
|
|
if (from->flags & SERVER_CTX_INTEGER)
|
|
{
|
|
to->ContextFlags |= CONTEXT_INTEGER;
|
|
to->Rax = from->integer.x86_64_regs.rax;
|
|
to->Rcx = from->integer.x86_64_regs.rcx;
|
|
to->Rdx = from->integer.x86_64_regs.rdx;
|
|
to->Rbx = from->integer.x86_64_regs.rbx;
|
|
to->Rsi = from->integer.x86_64_regs.rsi;
|
|
to->Rdi = from->integer.x86_64_regs.rdi;
|
|
to->R8 = from->integer.x86_64_regs.r8;
|
|
to->R9 = from->integer.x86_64_regs.r9;
|
|
to->R10 = from->integer.x86_64_regs.r10;
|
|
to->R11 = from->integer.x86_64_regs.r11;
|
|
to->R12 = from->integer.x86_64_regs.r12;
|
|
to->R13 = from->integer.x86_64_regs.r13;
|
|
to->R14 = from->integer.x86_64_regs.r14;
|
|
to->R15 = from->integer.x86_64_regs.r15;
|
|
}
|
|
if (from->flags & SERVER_CTX_SEGMENTS)
|
|
{
|
|
to->ContextFlags |= CONTEXT_SEGMENTS;
|
|
to->SegDs = from->seg.x86_64_regs.ds;
|
|
to->SegEs = from->seg.x86_64_regs.es;
|
|
to->SegFs = from->seg.x86_64_regs.fs;
|
|
to->SegGs = from->seg.x86_64_regs.gs;
|
|
}
|
|
if (from->flags & SERVER_CTX_FLOATING_POINT)
|
|
{
|
|
to->ContextFlags |= CONTEXT_FLOATING_POINT;
|
|
memcpy( &to->u.FltSave, from->fp.x86_64_regs.fpregs, sizeof(from->fp.x86_64_regs.fpregs) );
|
|
}
|
|
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
|
|
{
|
|
to->ContextFlags |= CONTEXT_DEBUG_REGISTERS;
|
|
to->Dr0 = from->debug.x86_64_regs.dr0;
|
|
to->Dr1 = from->debug.x86_64_regs.dr1;
|
|
to->Dr2 = from->debug.x86_64_regs.dr2;
|
|
to->Dr3 = from->debug.x86_64_regs.dr3;
|
|
to->Dr6 = from->debug.x86_64_regs.dr6;
|
|
to->Dr7 = from->debug.x86_64_regs.dr7;
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* call_stack_handlers
|
|
*
|
|
* Call the stack handlers chain.
|
|
*/
|
|
static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
|
|
{
|
|
EXCEPTION_POINTERS ptrs;
|
|
|
|
FIXME( "not implemented on x86_64\n" );
|
|
|
|
/* hack: call unhandled exception filter directly */
|
|
ptrs.ExceptionRecord = rec;
|
|
ptrs.ContextRecord = context;
|
|
unhandled_exception_filter( &ptrs );
|
|
return STATUS_UNHANDLED_EXCEPTION;
|
|
}
|
|
|
|
|
|
/*******************************************************************
|
|
* raise_exception
|
|
*
|
|
* Implementation of NtRaiseException.
|
|
*/
|
|
static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
|
|
{
|
|
NTSTATUS status;
|
|
|
|
if (first_chance)
|
|
{
|
|
DWORD c;
|
|
|
|
TRACE( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
|
|
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
|
context->Rip, GetCurrentThreadId() );
|
|
for (c = 0; c < rec->NumberParameters; c++)
|
|
TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
|
|
if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
|
|
{
|
|
if (rec->ExceptionInformation[1] >> 16)
|
|
MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
|
|
rec->ExceptionAddress,
|
|
(char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
|
|
else
|
|
MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
|
|
rec->ExceptionAddress,
|
|
(char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
|
|
}
|
|
else
|
|
{
|
|
TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
|
|
context->Rax, context->Rbx, context->Rcx, context->Rdx );
|
|
TRACE(" rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
|
|
context->Rsi, context->Rdi, context->Rbp, context->Rsp );
|
|
TRACE(" r8=%016lx r9=%016lx r10=%016lx r11=%016lx\n",
|
|
context->R8, context->R9, context->R10, context->R11 );
|
|
TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
|
|
context->R12, context->R13, context->R14, context->R15 );
|
|
}
|
|
status = send_debug_event( rec, TRUE, context );
|
|
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
|
|
return STATUS_SUCCESS;
|
|
|
|
if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
|
|
return STATUS_SUCCESS;
|
|
|
|
if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
|
|
return status;
|
|
}
|
|
|
|
/* last chance exception */
|
|
|
|
status = send_debug_event( rec, FALSE, context );
|
|
if (status != DBG_CONTINUE)
|
|
{
|
|
if (rec->ExceptionFlags & EH_STACK_INVALID)
|
|
ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
|
|
else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
|
|
ERR("Process attempted to continue execution after noncontinuable exception.\n");
|
|
else
|
|
ERR("Unhandled exception code %x flags %x addr %p\n",
|
|
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
|
|
NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* segv_handler
|
|
*
|
|
* Handler for SIGSEGV and related errors.
|
|
*/
|
|
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
ucontext_t *ucontext = sigcontext;
|
|
|
|
save_context( &context, ucontext );
|
|
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionAddress = (LPVOID)context.Rip;
|
|
rec.NumberParameters = 0;
|
|
|
|
switch(TRAP_sig(ucontext))
|
|
{
|
|
case TRAP_x86_OFLOW: /* Overflow exception */
|
|
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
|
|
break;
|
|
case TRAP_x86_BOUND: /* Bound range exception */
|
|
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
|
|
break;
|
|
case TRAP_x86_PRIVINFLT: /* Invalid opcode exception */
|
|
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
case TRAP_x86_STKFLT: /* Stack fault */
|
|
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
|
|
break;
|
|
case TRAP_x86_SEGNPFLT: /* Segment not present exception */
|
|
case TRAP_x86_PROTFLT: /* General protection fault */
|
|
case TRAP_x86_UNKNOWN: /* Unknown fault code */
|
|
rec.ExceptionCode = ERROR_sig(ucontext) ? EXCEPTION_ACCESS_VIOLATION
|
|
: EXCEPTION_PRIV_INSTRUCTION;
|
|
break;
|
|
case TRAP_x86_PAGEFLT: /* Page fault */
|
|
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = (ERROR_sig(ucontext) & 2) != 0;
|
|
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
|
|
if (!(rec.ExceptionCode = virtual_handle_fault( siginfo->si_addr, rec.ExceptionInformation[0] )))
|
|
goto done;
|
|
break;
|
|
case TRAP_x86_ALIGNFLT: /* Alignment check exception */
|
|
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
|
|
break;
|
|
default:
|
|
ERR( "Got unexpected trap %ld\n", TRAP_sig(ucontext) );
|
|
/* fall through */
|
|
case TRAP_x86_NMI: /* NMI interrupt */
|
|
case TRAP_x86_DNA: /* Device not available exception */
|
|
case TRAP_x86_DOUBLEFLT: /* Double fault exception */
|
|
case TRAP_x86_TSSFLT: /* Invalid TSS exception */
|
|
case TRAP_x86_MCHK: /* Machine check exception */
|
|
case TRAP_x86_CACHEFLT: /* Cache flush exception */
|
|
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
}
|
|
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
done:
|
|
restore_context( &context, ucontext );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* trap_handler
|
|
*
|
|
* Handler for SIGTRAP.
|
|
*/
|
|
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
ucontext_t *ucontext = sigcontext;
|
|
|
|
save_context( &context, ucontext );
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Rip;
|
|
rec.NumberParameters = 0;
|
|
|
|
switch (siginfo->si_code)
|
|
{
|
|
case TRAP_TRACE: /* Single-step exception */
|
|
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
|
|
EFL_sig(ucontext) &= ~0x100; /* clear single-step flag */
|
|
break;
|
|
case TRAP_BRKPT: /* Breakpoint exception */
|
|
rec.ExceptionAddress = (char *)rec.ExceptionAddress - 1; /* back up over the int3 instruction */
|
|
/* fall through */
|
|
default:
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
break;
|
|
}
|
|
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, ucontext );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* fpe_handler
|
|
*
|
|
* Handler for SIGFPE.
|
|
*/
|
|
static void fpe_handler( int signal, siginfo_t *siginfo, void *ucontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
save_context( &context, ucontext );
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Rip;
|
|
rec.NumberParameters = 0;
|
|
|
|
switch (siginfo->si_code)
|
|
{
|
|
case FPE_FLTSUB:
|
|
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
|
|
break;
|
|
case FPE_INTDIV:
|
|
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
|
|
break;
|
|
case FPE_INTOVF:
|
|
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
|
|
break;
|
|
case FPE_FLTDIV:
|
|
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
|
|
break;
|
|
case FPE_FLTOVF:
|
|
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
|
|
break;
|
|
case FPE_FLTUND:
|
|
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
|
|
break;
|
|
case FPE_FLTRES:
|
|
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
|
|
break;
|
|
case FPE_FLTINV:
|
|
default:
|
|
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
|
|
break;
|
|
}
|
|
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, ucontext );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* int_handler
|
|
*
|
|
* Handler for SIGINT.
|
|
*/
|
|
static void int_handler( int signal, siginfo_t *siginfo, void *ucontext )
|
|
{
|
|
if (!dispatch_signal(SIGINT))
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
save_context( &context, ucontext );
|
|
rec.ExceptionCode = CONTROL_C_EXIT;
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Rip;
|
|
rec.NumberParameters = 0;
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, ucontext );
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* abrt_handler
|
|
*
|
|
* Handler for SIGABRT.
|
|
*/
|
|
static void abrt_handler( int signal, siginfo_t *siginfo, void *ucontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
save_context( &context, ucontext );
|
|
rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
|
|
rec.ExceptionFlags = EH_NONCONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Rip;
|
|
rec.NumberParameters = 0;
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, ucontext );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* quit_handler
|
|
*
|
|
* Handler for SIGQUIT.
|
|
*/
|
|
static void quit_handler( int signal, siginfo_t *siginfo, void *ucontext )
|
|
{
|
|
abort_thread(0);
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* usr1_handler
|
|
*
|
|
* Handler for SIGUSR1, used to signal a thread that it got suspended.
|
|
*/
|
|
static void usr1_handler( int signal, siginfo_t *siginfo, void *ucontext )
|
|
{
|
|
CONTEXT context;
|
|
|
|
save_context( &context, ucontext );
|
|
wait_suspend( &context );
|
|
restore_context( &context, ucontext );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* get_signal_stack_total_size
|
|
*
|
|
* Retrieve the size to allocate for the signal stack, including the TEB at the bottom.
|
|
* Must be a power of two.
|
|
*/
|
|
size_t get_signal_stack_total_size(void)
|
|
{
|
|
assert( sizeof(TEB) <= 2*getpagesize() );
|
|
return 2*getpagesize(); /* this is just for the TEB, we don't need a signal stack */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_set_signal_handler (NTDLL.@)
|
|
*/
|
|
int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
|
|
{
|
|
if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
|
|
if (handlers[sig] != NULL) return -2;
|
|
handlers[sig] = wsh;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_thread
|
|
*/
|
|
void signal_init_thread( TEB *teb )
|
|
{
|
|
#ifdef __linux__
|
|
arch_prctl( ARCH_SET_GS, teb );
|
|
#else
|
|
# error Please define setting %gs for your architecture
|
|
#endif
|
|
}
|
|
|
|
/**********************************************************************
|
|
* signal_init_process
|
|
*/
|
|
void signal_init_process(void)
|
|
{
|
|
struct sigaction sig_act;
|
|
|
|
sig_act.sa_mask = server_block_set;
|
|
sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
|
|
|
|
sig_act.sa_sigaction = int_handler;
|
|
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = fpe_handler;
|
|
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = abrt_handler;
|
|
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = quit_handler;
|
|
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = usr1_handler;
|
|
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
|
|
|
|
sig_act.sa_sigaction = segv_handler;
|
|
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
|
|
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
|
|
#ifdef SIGBUS
|
|
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
|
|
#endif
|
|
|
|
#ifdef SIGTRAP
|
|
sig_act.sa_sigaction = trap_handler;
|
|
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
|
|
#endif
|
|
return;
|
|
|
|
error:
|
|
perror("sigaction");
|
|
exit(1);
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* RtlLookupFunctionEntry (NTDLL.@)
|
|
*/
|
|
PRUNTIME_FUNCTION WINAPI RtlLookupFunctionEntry( ULONG64 pc, ULONG64 *base,
|
|
UNWIND_HISTORY_TABLE *table )
|
|
{
|
|
FIXME("stub\n");
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* RtlVirtualUnwind (NTDLL.@)
|
|
*/
|
|
PVOID WINAPI RtlVirtualUnwind ( ULONG type, ULONG64 base, ULONG64 pc,
|
|
RUNTIME_FUNCTION *function, CONTEXT *context,
|
|
PVOID *data, ULONG64 *frame,
|
|
KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
|
|
{
|
|
FIXME("stub\n");
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*******************************************************************
|
|
* RtlUnwind (NTDLL.@)
|
|
*/
|
|
void WINAPI __regs_RtlUnwind( EXCEPTION_REGISTRATION_RECORD* pEndFrame, PVOID targetIp,
|
|
PEXCEPTION_RECORD pRecord, PVOID retval, CONTEXT *context )
|
|
{
|
|
EXCEPTION_RECORD record;
|
|
|
|
/* build an exception record, if we do not have one */
|
|
if (!pRecord)
|
|
{
|
|
record.ExceptionCode = STATUS_UNWIND;
|
|
record.ExceptionFlags = 0;
|
|
record.ExceptionRecord = NULL;
|
|
record.ExceptionAddress = (void *)context->Rip;
|
|
record.NumberParameters = 0;
|
|
pRecord = &record;
|
|
}
|
|
|
|
pRecord->ExceptionFlags |= EH_UNWINDING | (pEndFrame ? 0 : EH_EXIT_UNWIND);
|
|
|
|
FIXME( "code=%x flags=%x not implemented on x86_64\n",
|
|
pRecord->ExceptionCode, pRecord->ExceptionFlags );
|
|
NtTerminateProcess( GetCurrentProcess(), 1 );
|
|
}
|
|
DEFINE_REGS_ENTRYPOINT( RtlUnwind, 4 )
|
|
|
|
|
|
/*******************************************************************
|
|
* NtRaiseException (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
|
|
{
|
|
NTSTATUS status = raise_exception( rec, context, first_chance );
|
|
if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RtlRaiseException (NTDLL.@)
|
|
*/
|
|
void WINAPI __regs_RtlRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context )
|
|
{
|
|
NTSTATUS status;
|
|
|
|
rec->ExceptionAddress = (void *)context->Rip;
|
|
status = raise_exception( rec, context, TRUE );
|
|
if (status != STATUS_SUCCESS) raise_status( status, rec );
|
|
}
|
|
DEFINE_REGS_ENTRYPOINT( RtlRaiseException, 1 )
|
|
|
|
|
|
/**********************************************************************
|
|
* __wine_enter_vm86 (NTDLL.@)
|
|
*/
|
|
void __wine_enter_vm86( CONTEXT *context )
|
|
{
|
|
MESSAGE("vm86 mode not supported on this platform\n");
|
|
}
|
|
|
|
/**********************************************************************
|
|
* DbgBreakPoint (NTDLL.@)
|
|
*/
|
|
__ASM_GLOBAL_FUNC( DbgBreakPoint, "int $3; ret")
|
|
|
|
/**********************************************************************
|
|
* DbgUserBreakPoint (NTDLL.@)
|
|
*/
|
|
__ASM_GLOBAL_FUNC( DbgUserBreakPoint, "int $3; ret")
|
|
|
|
#endif /* __x86_64__ */
|