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wine/dlls/ntdll/signal_x86_64.c

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/*
* x86-64 signal handling routines
*
* Copyright 1999, 2005 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef __x86_64__
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
#define NONAMELESSUNION
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "wine/library.h"
#include "wine/exception.h"
#include "ntdll_misc.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(seh);
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
#include <asm/prctl.h>
extern int arch_prctl(int func, void *ptr);
typedef struct ucontext SIGCONTEXT;
# define HANDLER_DEF(name) void name( int __signal, struct siginfo *__siginfo, SIGCONTEXT *__context )
# define HANDLER_CONTEXT (__context)
#define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
#define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
#define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
#define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
#define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
#define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
#define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
#define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
#define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
#define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
#define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
#define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
#define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
#define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
#define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
#define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
#define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
#define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
#define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
#define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
#define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
#define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
#define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
#define FAULT_CODE (__siginfo->si_code)
#define FAULT_ADDRESS (__siginfo->si_addr)
#endif /* linux */
#if defined(__NetBSD__)
# include <sys/ucontext.h>
# include <sys/types.h>
# include <signal.h>
typedef ucontext_t SIGCONTEXT;
#define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
#define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
#define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
#define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
#define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
#define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
#define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
#define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
#define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
#define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
#define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
#define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
#define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
#define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
#define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
#define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
#define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
#define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
#define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
#define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
#define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
#define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
#define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
#define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
#define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
#define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
#define FAULT_CODE (__siginfo->si_code)
#define FAULT_ADDRESS (__siginfo->si_addr)
#define HANDLER_DEF(name) void name( int __signal, siginfo_t *__siginfo, SIGCONTEXT *__context )
#define HANDLER_CONTEXT (__context)
#define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
#endif /* __NetBSD__ */
enum i386_trap_code
{
TRAP_x86_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
TRAP_x86_DIVIDE = 0, /* Division by zero exception */
TRAP_x86_TRCTRAP = 1, /* Single-step exception */
TRAP_x86_NMI = 2, /* NMI interrupt */
TRAP_x86_BPTFLT = 3, /* Breakpoint exception */
TRAP_x86_OFLOW = 4, /* Overflow exception */
TRAP_x86_BOUND = 5, /* Bound range exception */
TRAP_x86_PRIVINFLT = 6, /* Invalid opcode exception */
TRAP_x86_DNA = 7, /* Device not available exception */
TRAP_x86_DOUBLEFLT = 8, /* Double fault exception */
TRAP_x86_FPOPFLT = 9, /* Coprocessor segment overrun */
TRAP_x86_TSSFLT = 10, /* Invalid TSS exception */
TRAP_x86_SEGNPFLT = 11, /* Segment not present exception */
TRAP_x86_STKFLT = 12, /* Stack fault */
TRAP_x86_PROTFLT = 13, /* General protection fault */
TRAP_x86_PAGEFLT = 14, /* Page fault */
TRAP_x86_ARITHTRAP = 16, /* Floating point exception */
TRAP_x86_ALIGNFLT = 17, /* Alignment check exception */
TRAP_x86_MCHK = 18, /* Machine check exception */
TRAP_x86_CACHEFLT = 19 /* Cache flush exception */
};
typedef int (*wine_signal_handler)(unsigned int sig);
static wine_signal_handler handlers[256];
/***********************************************************************
* dispatch_signal
*/
static inline int dispatch_signal(unsigned int sig)
{
if (handlers[sig] == NULL) return 0;
return handlers[sig](sig);
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS;
context->Rax = RAX_sig(sigcontext);
context->Rcx = RCX_sig(sigcontext);
context->Rdx = RDX_sig(sigcontext);
context->Rbx = RBX_sig(sigcontext);
context->Rsp = RSP_sig(sigcontext);
context->Rbp = RBP_sig(sigcontext);
context->Rsi = RSI_sig(sigcontext);
context->Rdi = RDI_sig(sigcontext);
context->R8 = R8_sig(sigcontext);
context->R9 = R9_sig(sigcontext);
context->R10 = R10_sig(sigcontext);
context->R11 = R11_sig(sigcontext);
context->R12 = R12_sig(sigcontext);
context->R13 = R13_sig(sigcontext);
context->R14 = R14_sig(sigcontext);
context->R15 = R15_sig(sigcontext);
context->Rip = RIP_sig(sigcontext);
context->SegCs = CS_sig(sigcontext);
context->SegFs = FS_sig(sigcontext);
context->SegGs = GS_sig(sigcontext);
context->EFlags = EFL_sig(sigcontext);
context->SegDs = 0; /* FIXME */
context->SegEs = 0; /* FIXME */
context->SegSs = 0; /* FIXME */
context->MxCsr = 0; /* FIXME */
if (FPU_sig(sigcontext))
{
context->ContextFlags |= CONTEXT_FLOATING_POINT;
context->u.FltSave = *FPU_sig(sigcontext);
}
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, SIGCONTEXT *sigcontext )
{
RAX_sig(sigcontext) = context->Rax;
RCX_sig(sigcontext) = context->Rcx;
RDX_sig(sigcontext) = context->Rdx;
RBX_sig(sigcontext) = context->Rbx;
RSP_sig(sigcontext) = context->Rsp;
RBP_sig(sigcontext) = context->Rbp;
RSI_sig(sigcontext) = context->Rsi;
RDI_sig(sigcontext) = context->Rdi;
R8_sig(sigcontext) = context->R8;
R9_sig(sigcontext) = context->R9;
R10_sig(sigcontext) = context->R10;
R11_sig(sigcontext) = context->R11;
R12_sig(sigcontext) = context->R12;
R13_sig(sigcontext) = context->R13;
R14_sig(sigcontext) = context->R14;
R15_sig(sigcontext) = context->R15;
RIP_sig(sigcontext) = context->Rip;
CS_sig(sigcontext) = context->SegCs;
FS_sig(sigcontext) = context->SegFs;
GS_sig(sigcontext) = context->SegGs;
EFL_sig(sigcontext) = context->EFlags;
if (FPU_sig(sigcontext)) *FPU_sig(sigcontext) = context->u.FltSave;
}
/***********************************************************************
* RtlCaptureContext (NTDLL.@)
*/
void WINAPI __regs_RtlCaptureContext( CONTEXT *context, CONTEXT *regs )
{
*context = *regs;
}
DEFINE_REGS_ENTRYPOINT( RtlCaptureContext, 1 )
/***********************************************************************
* set_cpu_context
*
* Set the new CPU context.
*/
void set_cpu_context( const CONTEXT *context )
{
FIXME("not implemented\n");
}
/***********************************************************************
* copy_context
*
* Copy a register context according to the flags.
*/
void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
{
flags &= ~CONTEXT_AMD64; /* get rid of CPU id */
if (flags & CONTEXT_CONTROL)
{
to->Rbp = from->Rbp;
to->Rip = from->Rip;
to->Rsp = from->Rsp;
to->SegCs = from->SegCs;
to->SegSs = from->SegSs;
to->EFlags = from->EFlags;
to->MxCsr = from->MxCsr;
}
if (flags & CONTEXT_INTEGER)
{
to->Rax = from->Rax;
to->Rcx = from->Rcx;
to->Rdx = from->Rdx;
to->Rbx = from->Rbx;
to->Rsi = from->Rsi;
to->Rdi = from->Rdi;
to->R8 = from->R8;
to->R9 = from->R9;
to->R10 = from->R10;
to->R11 = from->R11;
to->R12 = from->R12;
to->R13 = from->R13;
to->R14 = from->R14;
to->R15 = from->R15;
}
if (flags & CONTEXT_SEGMENTS)
{
to->SegDs = from->SegDs;
to->SegEs = from->SegEs;
to->SegFs = from->SegFs;
to->SegGs = from->SegGs;
}
if (flags & CONTEXT_FLOATING_POINT)
{
to->u.FltSave = from->u.FltSave;
}
if (flags & CONTEXT_DEBUG_REGISTERS)
{
to->Dr0 = from->Dr0;
to->Dr1 = from->Dr1;
to->Dr2 = from->Dr2;
to->Dr3 = from->Dr3;
to->Dr6 = from->Dr6;
to->Dr7 = from->Dr7;
}
}
/***********************************************************************
* context_to_server
*
* Convert a register context to the server format.
*/
NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
{
DWORD flags = from->ContextFlags & ~CONTEXT_AMD64; /* get rid of CPU id */
memset( to, 0, sizeof(*to) );
to->cpu = CPU_x86_64;
if (flags & CONTEXT_CONTROL)
{
to->flags |= SERVER_CTX_CONTROL;
to->ctl.x86_64_regs.rbp = from->Rbp;
to->ctl.x86_64_regs.rip = from->Rip;
to->ctl.x86_64_regs.rsp = from->Rsp;
to->ctl.x86_64_regs.cs = from->SegCs;
to->ctl.x86_64_regs.ss = from->SegSs;
to->ctl.x86_64_regs.flags = from->EFlags;
to->ctl.x86_64_regs.mxcsr = from->MxCsr;
}
if (flags & CONTEXT_INTEGER)
{
to->flags |= SERVER_CTX_INTEGER;
to->integer.x86_64_regs.rax = from->Rax;
to->integer.x86_64_regs.rcx = from->Rcx;
to->integer.x86_64_regs.rdx = from->Rdx;
to->integer.x86_64_regs.rbx = from->Rbx;
to->integer.x86_64_regs.rsi = from->Rsi;
to->integer.x86_64_regs.rdi = from->Rdi;
to->integer.x86_64_regs.r8 = from->R8;
to->integer.x86_64_regs.r9 = from->R9;
to->integer.x86_64_regs.r10 = from->R10;
to->integer.x86_64_regs.r11 = from->R11;
to->integer.x86_64_regs.r12 = from->R12;
to->integer.x86_64_regs.r13 = from->R13;
to->integer.x86_64_regs.r14 = from->R14;
to->integer.x86_64_regs.r15 = from->R15;
}
if (flags & CONTEXT_SEGMENTS)
{
to->flags |= SERVER_CTX_SEGMENTS;
to->seg.x86_64_regs.ds = from->SegDs;
to->seg.x86_64_regs.es = from->SegEs;
to->seg.x86_64_regs.fs = from->SegFs;
to->seg.x86_64_regs.gs = from->SegGs;
}
if (flags & CONTEXT_FLOATING_POINT)
{
to->flags |= SERVER_CTX_FLOATING_POINT;
memcpy( to->fp.x86_64_regs.fpregs, &from->u.FltSave, sizeof(to->fp.x86_64_regs.fpregs) );
}
if (flags & CONTEXT_DEBUG_REGISTERS)
{
to->flags |= SERVER_CTX_DEBUG_REGISTERS;
to->debug.x86_64_regs.dr0 = from->Dr0;
to->debug.x86_64_regs.dr1 = from->Dr1;
to->debug.x86_64_regs.dr2 = from->Dr2;
to->debug.x86_64_regs.dr3 = from->Dr3;
to->debug.x86_64_regs.dr6 = from->Dr6;
to->debug.x86_64_regs.dr7 = from->Dr7;
}
return STATUS_SUCCESS;
}
/***********************************************************************
* context_from_server
*
* Convert a register context from the server format.
*/
NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
{
if (from->cpu != CPU_x86_64) return STATUS_INVALID_PARAMETER;
to->ContextFlags = CONTEXT_AMD64;
if (from->flags & SERVER_CTX_CONTROL)
{
to->ContextFlags |= CONTEXT_CONTROL;
to->Rbp = from->ctl.x86_64_regs.rbp;
to->Rip = from->ctl.x86_64_regs.rip;
to->Rsp = from->ctl.x86_64_regs.rsp;
to->SegCs = from->ctl.x86_64_regs.cs;
to->SegSs = from->ctl.x86_64_regs.ss;
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;
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static HANDLER_DEF(segv_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, HANDLER_CONTEXT );
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionAddress = (LPVOID)context.Rip;
rec.NumberParameters = 0;
switch(TRAP_sig(HANDLER_CONTEXT))
{
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(HANDLER_CONTEXT) ? EXCEPTION_ACCESS_VIOLATION
: EXCEPTION_PRIV_INSTRUCTION;
break;
case TRAP_x86_PAGEFLT: /* Page fault */
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
#ifdef FAULT_ADDRESS
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = (ERROR_sig(HANDLER_CONTEXT) & 2) != 0;
rec.ExceptionInformation[1] = (ULONG_PTR)FAULT_ADDRESS;
if (!(rec.ExceptionCode = virtual_handle_fault( FAULT_ADDRESS, rec.ExceptionInformation[0] )))
goto done;
#endif
break;
case TRAP_x86_ALIGNFLT: /* Alignment check exception */
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR( "Got unexpected trap %ld\n", TRAP_sig(HANDLER_CONTEXT) );
/* 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, HANDLER_CONTEXT );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static HANDLER_DEF(trap_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, HANDLER_CONTEXT );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Rip;
rec.NumberParameters = 0;
switch(FAULT_CODE)
{
case TRAP_TRACE: /* Single-step exception */
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
EFL_sig(HANDLER_CONTEXT) &= ~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, HANDLER_CONTEXT );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static HANDLER_DEF(fpe_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, HANDLER_CONTEXT );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Rip;
rec.NumberParameters = 0;
switch (FAULT_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, HANDLER_CONTEXT );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static HANDLER_DEF(int_handler)
{
if (!dispatch_signal(SIGINT))
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, HANDLER_CONTEXT );
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, HANDLER_CONTEXT );
}
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static HANDLER_DEF(abrt_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, HANDLER_CONTEXT );
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, HANDLER_CONTEXT );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static HANDLER_DEF(quit_handler)
{
abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static HANDLER_DEF(usr1_handler)
{
CONTEXT context;
save_context( &context, HANDLER_CONTEXT );
wait_suspend( &context );
restore_context( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* 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 */
}
/***********************************************************************
* set_handler
*
* Set a signal handler
*/
static int set_handler( int sig, void (*func)() )
{
struct sigaction sig_act;
sig_act.sa_sigaction = func;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
return sigaction( sig, &sig_act, NULL );
}
/***********************************************************************
* __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)
{
if (set_handler( SIGINT, (void (*)())int_handler ) == -1) goto error;
if (set_handler( SIGFPE, (void (*)())fpe_handler ) == -1) goto error;
if (set_handler( SIGSEGV, (void (*)())segv_handler ) == -1) goto error;
if (set_handler( SIGILL, (void (*)())segv_handler ) == -1) goto error;
if (set_handler( SIGABRT, (void (*)())abrt_handler ) == -1) goto error;
if (set_handler( SIGQUIT, (void (*)())quit_handler ) == -1) goto error;
if (set_handler( SIGUSR1, (void (*)())usr1_handler ) == -1) goto error;
#ifdef SIGBUS
if (set_handler( SIGBUS, (void (*)())segv_handler ) == -1) goto error;
#endif
#ifdef SIGTRAP
if (set_handler( SIGTRAP, (void (*)())trap_handler ) == -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;
}
/***********************************************************************
* 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__ */
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