Moved all signal support to a new platform-specific file.

Make use of the per-thread signal stack (Juergen Lock).
Fixed %fs in signal handler for non FS_sig case (Ulrich Weigand).
This commit is contained in:
Alexandre Julliard 1999-09-27 10:58:45 +00:00
parent 55c2d900c6
commit 3d06d20bab
14 changed files with 704 additions and 808 deletions

View file

@ -16,6 +16,7 @@ C_SRCS = \
rtl.c \
rtlstr.c \
sec.c \
signal_i386.c \
sync.c \
time.c

View file

@ -12,7 +12,6 @@
#include "global.h"
#include "wine/exception.h"
#include "stackframe.h"
#include "sig_context.h"
#include "miscemu.h"
#include "debugtools.h"
@ -25,10 +24,11 @@ typedef struct
EXCEPTION_FRAME *prevFrame;
} EXC_NESTED_FRAME;
#ifdef __i386__
# define GET_IP(context) ((LPVOID)EIP_reg(context))
# define GET_IP(context) ((LPVOID)(context)->Eip)
#else
# define GET_IP(context) ((LPVOID)0)
# error You must define GET_IP for this CPU
#endif /* __i386__ */
/* Default hook for built-in debugger */
@ -224,7 +224,7 @@ void WINAPI REGS_FUNC(RtlUnwind)( PEXCEPTION_FRAME pEndFrame, LPVOID unusedEip,
PEXCEPTION_FRAME frame, dispatch;
#ifdef __i386__
EAX_reg(context) = returnEax;
context->Eax = returnEax;
#endif
/* build an exception record, if we do not have one */
@ -343,362 +343,3 @@ void WINAPI DebugBreak16( CONTEXT86 *context )
REGS_FUNC(DebugBreak)( context );
#endif /* defined(__i386__) */
}
/***********************************************************************
* EXC_SaveContext
*
* Set the register values from a sigcontext.
*/
static void EXC_SaveContext( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
#ifdef __i386__
EAX_reg(context) = EAX_sig(sigcontext);
EBX_reg(context) = EBX_sig(sigcontext);
ECX_reg(context) = ECX_sig(sigcontext);
EDX_reg(context) = EDX_sig(sigcontext);
ESI_reg(context) = ESI_sig(sigcontext);
EDI_reg(context) = EDI_sig(sigcontext);
EBP_reg(context) = EBP_sig(sigcontext);
EFL_reg(context) = EFL_sig(sigcontext);
EIP_reg(context) = EIP_sig(sigcontext);
ESP_reg(context) = ESP_sig(sigcontext);
CS_reg(context) = LOWORD(CS_sig(sigcontext));
DS_reg(context) = LOWORD(DS_sig(sigcontext));
ES_reg(context) = LOWORD(ES_sig(sigcontext));
SS_reg(context) = LOWORD(SS_sig(sigcontext));
#ifdef FS_sig
FS_reg(context) = LOWORD(FS_sig(sigcontext));
#else
GET_FS( FS_reg(context) );
FS_reg(context) &= 0xffff;
#endif
#ifdef GS_sig
GS_reg(context) = LOWORD(GS_sig(sigcontext));
#else
GET_GS( GS_reg(context) );
GS_reg(context) &= 0xffff;
#endif
if (ISV86(context)) V86BASE(context) = (DWORD)DOSMEM_MemoryBase(0);
#endif /* __i386__ */
}
/***********************************************************************
* EXC_RestoreContext
*
* Build a sigcontext from the register values.
*/
static void EXC_RestoreContext( const CONTEXT *context, SIGCONTEXT *sigcontext )
{
#ifdef __i386__
EAX_sig(sigcontext) = EAX_reg(context);
EBX_sig(sigcontext) = EBX_reg(context);
ECX_sig(sigcontext) = ECX_reg(context);
EDX_sig(sigcontext) = EDX_reg(context);
ESI_sig(sigcontext) = ESI_reg(context);
EDI_sig(sigcontext) = EDI_reg(context);
EBP_sig(sigcontext) = EBP_reg(context);
EFL_sig(sigcontext) = EFL_reg(context);
EIP_sig(sigcontext) = EIP_reg(context);
ESP_sig(sigcontext) = ESP_reg(context);
CS_sig(sigcontext) = CS_reg(context);
DS_sig(sigcontext) = DS_reg(context);
ES_sig(sigcontext) = ES_reg(context);
SS_sig(sigcontext) = SS_reg(context);
#ifdef FS_sig
FS_sig(sigcontext) = FS_reg(context);
#else
SET_FS( FS_reg(context) );
#endif
#ifdef GS_sig
GS_sig(sigcontext) = GS_reg(context);
#else
SET_GS( GS_reg(context) );
#endif
#endif /* __i386__ */
}
/**********************************************************************
* EXC_segv
*
* Handler for SIGSEGV and related errors.
*/
static HANDLER_DEF(EXC_segv)
{
EXCEPTION_RECORD rec;
CONTEXT context;
HANDLER_INIT();
#if defined(TRAP_sig) && defined(CR2_sig)
/* we want the page-fault case to be fast */
if (TRAP_sig(HANDLER_CONTEXT) == 14)
if (VIRTUAL_HandleFault( (LPVOID)CR2_sig(HANDLER_CONTEXT) )) return;
#endif
EXC_SaveContext( &context, HANDLER_CONTEXT );
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = 0;
rec.ExceptionAddress = GET_IP(&context);
rec.NumberParameters = 0;
#ifdef TRAP_sig
switch(TRAP_sig(HANDLER_CONTEXT))
{
case 4: /* Overflow exception */
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case 5: /* Bound range exception */
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case 6: /* Invalid opcode exception */
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case 12: /* Stack fault */
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
case 11: /* Segment not present exception */
case 13: /* General protection fault */
if (INSTR_EmulateInstruction( &context )) goto restore;
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
break;
case 14: /* Page fault */
#ifdef CR2_sig
rec.NumberParameters = 2;
#ifdef ERROR_sig
rec.ExceptionInformation[0] = (ERROR_sig(HANDLER_CONTEXT) & 2) != 0;
#else
rec.ExceptionInformation[0] = 0;
#endif /* ERROR_sig */
rec.ExceptionInformation[1] = CR2_sig(HANDLER_CONTEXT);
#endif /* CR2_sig */
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
break;
case 17: /* Alignment check exception */
/* FIXME: pass through exception handler first? */
if (EFL_reg(&context) & 0x00040000)
{
/* Disable AC flag, return */
EFL_reg(&context) &= ~0x00040000;
goto restore;
}
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR( "Got unexpected trap %ld\n", TRAP_sig(HANDLER_CONTEXT) );
/* fall through */
case 2: /* NMI interrupt */
case 7: /* Device not available exception */
case 8: /* Double fault exception */
case 10: /* Invalid TSS exception */
case 15: /* Unknown exception */
case 18: /* Machine check exception */
case 19: /* Cache flush exception */
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
#else /* TRAP_sig */
# ifdef __i386__
if (INSTR_EmulateInstruction( &context )) goto restore;
# endif
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION; /* generic error */
#endif /* TRAP_sig */
REGS_FUNC(RtlRaiseException)( &rec, &context );
restore:
EXC_RestoreContext( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* EXC_trap
*
* Handler for SIGTRAP.
*/
static HANDLER_DEF(EXC_trap)
{
EXCEPTION_RECORD rec;
CONTEXT context;
HANDLER_INIT();
#ifdef TRAP_sig
rec.ExceptionCode = (TRAP_sig(HANDLER_CONTEXT) == 1) ?
EXCEPTION_SINGLE_STEP : EXCEPTION_BREAKPOINT;
#else
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
#endif /* TRAP_sig */
EXC_SaveContext( &context, HANDLER_CONTEXT );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = GET_IP(&context);
rec.NumberParameters = 0;
REGS_FUNC(RtlRaiseException)( &rec, &context );
EXC_RestoreContext( &context, HANDLER_CONTEXT );
}
/***********************************************************************
* EXC_SaveFPU
*
* Set the FPU context from a sigcontext.
*/
static void inline EXC_SaveFPU( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
#ifdef __i386__
# ifdef FPU_sig
if (FPU_sig(sigcontext))
{
context->FloatSave = *FPU_sig(sigcontext);
return;
}
# endif /* FPU_sig */
# ifdef __GNUC__
__asm__ __volatile__( "fnsave %0; fwait" : "=m" (context->FloatSave) );
# endif /* __GNUC__ */
#endif /* __i386__ */
}
/***********************************************************************
* EXC_RestoreFPU
*
* Restore the FPU context to a sigcontext.
*/
static void inline EXC_RestoreFPU( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
#ifdef __i386__
# ifdef FPU_sig
if (FPU_sig(sigcontext))
{
*FPU_sig(sigcontext) = context->FloatSave;
return;
}
# endif /* FPU_sig */
# ifdef __GNUC__
/* avoid nested exceptions */
context->FloatSave.StatusWord &= context->FloatSave.ControlWord | 0xffffff80;
__asm__ __volatile__( "frstor %0; fwait" : : "m" (context->FloatSave) );
# endif /* __GNUC__ */
#endif /* __i386__ */
}
/**********************************************************************
* EXC_GetFPUCode
*
* Get the FPU exception code from the FPU status.
*/
static inline DWORD EXC_GetFPUCode( const CONTEXT *context )
{
#ifdef __i386__
DWORD status = context->FloatSave.StatusWord;
if (status & 0x01) /* IE */
{
if (status & 0x40) /* SF */
return EXCEPTION_FLT_STACK_CHECK;
else
return EXCEPTION_FLT_INVALID_OPERATION;
}
if (status & 0x02) return EXCEPTION_FLT_DENORMAL_OPERAND; /* DE flag */
if (status & 0x04) return EXCEPTION_FLT_DIVIDE_BY_ZERO; /* ZE flag */
if (status & 0x08) return EXCEPTION_FLT_OVERFLOW; /* OE flag */
if (status & 0x10) return EXCEPTION_FLT_UNDERFLOW; /* UE flag */
if (status & 0x20) return EXCEPTION_FLT_INEXACT_RESULT; /* PE flag */
#endif /* __i386__ */
return EXCEPTION_FLT_INVALID_OPERATION; /* generic error */
}
/**********************************************************************
* EXC_fpe
*
* Handler for SIGFPE.
*/
static HANDLER_DEF(EXC_fpe)
{
EXCEPTION_RECORD rec;
CONTEXT context;
HANDLER_INIT();
EXC_SaveFPU( &context, HANDLER_CONTEXT );
#ifdef TRAP_sig
switch(TRAP_sig(HANDLER_CONTEXT))
{
case 0: /* Division by zero exception */
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
case 9: /* Coprocessor segment overrun */
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
case 16: /* Floating point exception */
rec.ExceptionCode = EXC_GetFPUCode( &context );
break;
default:
ERR( "Got unexpected trap %ld\n", TRAP_sig(HANDLER_CONTEXT) );
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
#else /* TRAP_sig */
rec.ExceptionCode = EXC_GetFPUCode( &context );
#endif /* TRAP_sig */
EXC_SaveContext( &context, HANDLER_CONTEXT );
rec.ExceptionFlags = 0;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = GET_IP(&context);
rec.NumberParameters = 0;
REGS_FUNC(RtlRaiseException)( &rec, &context );
EXC_RestoreContext( &context, HANDLER_CONTEXT );
EXC_RestoreFPU( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* EXC_int
*
* Handler for SIGINT.
*/
static HANDLER_DEF(EXC_int)
{
EXCEPTION_RECORD rec;
CONTEXT context;
HANDLER_INIT();
EXC_SaveContext( &context, HANDLER_CONTEXT );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = 0;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = GET_IP(&context);
rec.NumberParameters = 0;
REGS_FUNC(RtlRaiseException)( &rec, &context );
EXC_RestoreContext( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* EXC_InitHandlers
*
* Initialize the signal handlers for exception handling.
*/
void EXC_InitHandlers(void)
{
SIGNAL_SetHandler( SIGINT, (void (*)())EXC_int );
SIGNAL_SetHandler( SIGFPE, (void (*)())EXC_fpe );
SIGNAL_SetHandler( SIGSEGV, (void (*)())EXC_segv );
SIGNAL_SetHandler( SIGILL, (void (*)())EXC_segv );
#ifdef SIGBUS
SIGNAL_SetHandler( SIGBUS, (void (*)())EXC_segv );
#endif
#ifdef SIGTRAP
SIGNAL_SetHandler( SIGTRAP, (void (*)())EXC_trap );
#endif
return;
}

680
dlls/ntdll/signal_i386.c Normal file
View file

@ -0,0 +1,680 @@
/*
* i386 signal handling routines
*
* Copyright 1999 Alexandre Julliard
*/
#ifdef __i386__
#include "config.h"
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef HAVE_SYSCALL_H
# include <syscall.h>
#else
# ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
# endif
#endif
#include "winnt.h"
#include "stackframe.h"
#include "global.h"
#include "miscemu.h"
#include "ntddk.h"
#include "syslevel.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(seh)
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
typedef struct
{
unsigned short sc_gs, __gsh;
unsigned short sc_fs, __fsh;
unsigned short sc_es, __esh;
unsigned short sc_ds, __dsh;
unsigned long sc_edi;
unsigned long sc_esi;
unsigned long sc_ebp;
unsigned long sc_esp;
unsigned long sc_ebx;
unsigned long sc_edx;
unsigned long sc_ecx;
unsigned long sc_eax;
unsigned long sc_trapno;
unsigned long sc_err;
unsigned long sc_eip;
unsigned short sc_cs, __csh;
unsigned long sc_eflags;
unsigned long esp_at_signal;
unsigned short sc_ss, __ssh;
unsigned long i387;
unsigned long oldmask;
unsigned long cr2;
} SIGCONTEXT;
#define HANDLER_DEF(name) void name( int __signal, SIGCONTEXT __context )
#define HANDLER_CONTEXT (&__context)
/* this is the sigaction structure from the Linux 2.1.20 kernel. */
#undef sa_handler
struct kernel_sigaction
{
void (*sa_handler)();
unsigned long sa_mask;
unsigned long sa_flags;
void *sa_restorer;
};
/* Similar to the sigaction function in libc, except it leaves alone the
restorer field, which is used to specify the signal stack address */
static inline int wine_sigaction( int sig, struct kernel_sigaction *new,
struct kernel_sigaction *old )
{
__asm__ __volatile__( "pushl %%ebx\n\t"
"movl %2,%%ebx\n\t"
"int $0x80\n\t"
"popl %%ebx"
: "=a" (sig)
: "0" (SYS_sigaction), "r" (sig), "c" (new), "d" (old) );
if (sig>=0) return 0;
errno = -sig;
return -1;
}
#endif /* linux */
#ifdef BSDI
#define EAX_sig(context) ((context)->tf_eax)
#define EBX_sig(context) ((context)->tf_ebx)
#define ECX_sig(context) ((context)->tf_ecx)
#define EDX_sig(context) ((context)->tf_edx)
#define ESI_sig(context) ((context)->tf_esi)
#define EDI_sig(context) ((context)->tf_edi)
#define EBP_sig(context) ((context)->tf_ebp)
#define CS_sig(context) ((context)->tf_cs)
#define DS_sig(context) ((context)->tf_ds)
#define ES_sig(context) ((context)->tf_es)
#define SS_sig(context) ((context)->tf_ss)
#include <machine/frame.h>
typedef struct trapframe SIGCONTEXT;
#define HANDLER_DEF(name) void name( int __signal, int code, SIGCONTEXT *__context )
#define HANDLER_CONTEXT __context
#define EFL_sig(context) ((context)->tf_eflags)
#define EIP_sig(context) (*((unsigned long*)&(context)->tf_eip))
#define ESP_sig(context) (*((unsigned long*)&(context)->tf_esp))
#endif /* bsdi */
#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
#include <signal.h>
typedef struct sigcontext SIGCONTEXT;
#define HANDLER_DEF(name) void name( int __signal, int code, SIGCONTEXT *__context )
#define HANDLER_CONTEXT __context
#endif /* FreeBSD */
#if defined(__svr4__) || defined(_SCO_DS) || defined(__sun)
#include <signal.h>
#ifdef _SCO_DS
#include <sys/regset.h>
#endif
/* Solaris kludge */
#undef ERR
#include <sys/ucontext.h>
#undef ERR
typedef struct ucontext SIGCONTEXT;
#define HANDLER_DEF(name) void name( int __signal, void *__siginfo, SIGCONTEXT *__context )
#define HANDLER_CONTEXT __context
#endif /* svr4 || SCO_DS */
#ifdef __EMX__
typedef struct
{
unsigned long ContextFlags;
FLOATING_SAVE_AREA sc_float;
unsigned long sc_gs;
unsigned long sc_fs;
unsigned long sc_es;
unsigned long sc_ds;
unsigned long sc_edi;
unsigned long sc_esi;
unsigned long sc_eax;
unsigned long sc_ebx;
unsigned long sc_ecx;
unsigned long sc_edx;
unsigned long sc_ebp;
unsigned long sc_eip;
unsigned long sc_cs;
unsigned long sc_eflags;
unsigned long sc_esp;
unsigned long sc_ss;
} SIGCONTEXT;
#endif /* __EMX__ */
#if defined(linux) || defined(__NetBSD__) || defined(__FreeBSD__) \
|| defined(__OpenBSD__) || defined(__EMX__)
#define EAX_sig(context) ((context)->sc_eax)
#define EBX_sig(context) ((context)->sc_ebx)
#define ECX_sig(context) ((context)->sc_ecx)
#define EDX_sig(context) ((context)->sc_edx)
#define ESI_sig(context) ((context)->sc_esi)
#define EDI_sig(context) ((context)->sc_edi)
#define EBP_sig(context) ((context)->sc_ebp)
#define CS_sig(context) ((context)->sc_cs)
#define DS_sig(context) ((context)->sc_ds)
#define ES_sig(context) ((context)->sc_es)
#define SS_sig(context) ((context)->sc_ss)
#ifdef linux
/* FS and GS are now in the sigcontext struct of FreeBSD, but not
* saved by the exception handling. duh.
*/
#define FS_sig(context) ((context)->sc_fs)
#define GS_sig(context) ((context)->sc_gs)
#define CR2_sig(context) ((context)->cr2)
#define TRAP_sig(context) ((context)->sc_trapno)
#define ERROR_sig(context) ((context)->sc_err)
#define FPU_sig(context) ((FLOATING_SAVE_AREA*)((context)->i387))
#endif
#ifndef __FreeBSD__
#define EFL_sig(context) ((context)->sc_eflags)
#else
#define EFL_sig(context) ((context)->sc_efl)
/* FreeBSD, see i386/i386/traps.c::trap_pfault va->err kludge */
#define CR2_sig(context) ((context)->sc_err)
#endif
#define EIP_sig(context) (*((unsigned long*)&(context)->sc_eip))
#define ESP_sig(context) (*((unsigned long*)&(context)->sc_esp))
#endif /* linux || __NetBSD__ || __FreeBSD__ || __OpenBSD__ */
#if defined(__svr4__) || defined(_SCO_DS) || defined(__sun)
#ifdef _SCO_DS
#define gregs regs
#endif
#define EAX_sig(context) ((context)->uc_mcontext.gregs[EAX])
#define EBX_sig(context) ((context)->uc_mcontext.gregs[EBX])
#define ECX_sig(context) ((context)->uc_mcontext.gregs[ECX])
#define EDX_sig(context) ((context)->uc_mcontext.gregs[EDX])
#define ESI_sig(context) ((context)->uc_mcontext.gregs[ESI])
#define EDI_sig(context) ((context)->uc_mcontext.gregs[EDI])
#define EBP_sig(context) ((context)->uc_mcontext.gregs[EBP])
#define CS_sig(context) ((context)->uc_mcontext.gregs[CS])
#define DS_sig(context) ((context)->uc_mcontext.gregs[DS])
#define ES_sig(context) ((context)->uc_mcontext.gregs[ES])
#define SS_sig(context) ((context)->uc_mcontext.gregs[SS])
#define FS_sig(context) ((context)->uc_mcontext.gregs[FS])
#define GS_sig(context) ((context)->uc_mcontext.gregs[GS])
#define EFL_sig(context) ((context)->uc_mcontext.gregs[EFL])
#define EIP_sig(context) ((context)->uc_mcontext.gregs[EIP])
#ifdef R_ESP
#define ESP_sig(context) ((context)->uc_mcontext.gregs[R_ESP])
#else
#define ESP_sig(context) ((context)->uc_mcontext.gregs[ESP])
#endif
#ifdef TRAPNO
#define TRAP_sig(context) ((context)->uc_mcontext.gregs[TRAPNO])
#endif
#endif /* svr4 || SCO_DS */
extern void WINAPI REGS_FUNC(RtlRaiseException)( EXCEPTION_RECORD *rec, CONTEXT *context );
/***********************************************************************
* handler_init
*
* Initialization code for a signal handler.
* Restores the proper %fs value for the current thread.
*/
static inline void handler_init( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
WORD fs;
/* get %fs at time of the fault */
#ifdef FS_sig
fs = FS_sig(sigcontext);
#else
GET_FS(fs);
#endif
context->SegFs = fs;
/* now restore a proper %fs for the fault handler */
if (!IS_SELECTOR_SYSTEM(CS_sig(sigcontext))) fs = SYSLEVEL_Win16CurrentTeb;
if (!fs) fs = SYSLEVEL_EmergencyTeb;
SET_FS(fs);
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
context->Eax = EAX_sig(sigcontext);
context->Ebx = EBX_sig(sigcontext);
context->Ecx = ECX_sig(sigcontext);
context->Edx = EDX_sig(sigcontext);
context->Esi = ESI_sig(sigcontext);
context->Edi = EDI_sig(sigcontext);
context->Ebp = EBP_sig(sigcontext);
context->EFlags = EFL_sig(sigcontext);
context->Eip = EIP_sig(sigcontext);
context->Esp = ESP_sig(sigcontext);
context->SegCs = LOWORD(CS_sig(sigcontext));
context->SegDs = LOWORD(DS_sig(sigcontext));
context->SegEs = LOWORD(ES_sig(sigcontext));
context->SegSs = LOWORD(SS_sig(sigcontext));
/* %fs already handled in handler_init */
#ifdef GS_sig
context->SegGs = LOWORD(GS_sig(sigcontext));
#else
GET_GS( context->SegGs );
context->SegGs &= 0xffff;
#endif
if (ISV86(context)) V86BASE(context) = (DWORD)DOSMEM_MemoryBase(0);
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, SIGCONTEXT *sigcontext )
{
EAX_sig(sigcontext) = context->Eax;
EBX_sig(sigcontext) = context->Ebx;
ECX_sig(sigcontext) = context->Ecx;
EDX_sig(sigcontext) = context->Edx;
ESI_sig(sigcontext) = context->Esi;
EDI_sig(sigcontext) = context->Edi;
EBP_sig(sigcontext) = context->Ebp;
EFL_sig(sigcontext) = context->EFlags;
EIP_sig(sigcontext) = context->Eip;
ESP_sig(sigcontext) = context->Esp;
CS_sig(sigcontext) = context->SegCs;
DS_sig(sigcontext) = context->SegDs;
ES_sig(sigcontext) = context->SegEs;
SS_sig(sigcontext) = context->SegSs;
#ifdef FS_sig
FS_sig(sigcontext) = context->SegFs;
#else
SET_FS( context->SegFs );
#endif
#ifdef GS_sig
GS_sig(sigcontext) = context->SegGs;
#else
SET_GS( context->SegGs );
#endif
}
/***********************************************************************
* save_fpu
*
* Set the FPU context from a sigcontext.
*/
static void inline save_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
#ifdef FPU_sig
if (FPU_sig(sigcontext))
{
context->FloatSave = *FPU_sig(sigcontext);
return;
}
#endif /* FPU_sig */
#ifdef __GNUC__
__asm__ __volatile__( "fnsave %0; fwait" : "=m" (context->FloatSave) );
#endif /* __GNUC__ */
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static void inline restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
{
#ifdef FPU_sig
if (FPU_sig(sigcontext))
{
*FPU_sig(sigcontext) = context->FloatSave;
return;
}
#endif /* FPU_sig */
#ifdef __GNUC__
/* avoid nested exceptions */
context->FloatSave.StatusWord &= context->FloatSave.ControlWord | 0xffffff80;
__asm__ __volatile__( "frstor %0; fwait" : : "m" (context->FloatSave) );
#endif /* __GNUC__ */
}
/**********************************************************************
* get_fpu_code
*
* Get the FPU exception code from the FPU status.
*/
static inline DWORD get_fpu_code( const CONTEXT *context )
{
DWORD status = context->FloatSave.StatusWord;
if (status & 0x01) /* IE */
{
if (status & 0x40) /* SF */
return EXCEPTION_FLT_STACK_CHECK;
else
return EXCEPTION_FLT_INVALID_OPERATION;
}
if (status & 0x02) return EXCEPTION_FLT_DENORMAL_OPERAND; /* DE flag */
if (status & 0x04) return EXCEPTION_FLT_DIVIDE_BY_ZERO; /* ZE flag */
if (status & 0x08) return EXCEPTION_FLT_OVERFLOW; /* OE flag */
if (status & 0x10) return EXCEPTION_FLT_UNDERFLOW; /* UE flag */
if (status & 0x20) return EXCEPTION_FLT_INEXACT_RESULT; /* PE flag */
return EXCEPTION_FLT_INVALID_OPERATION; /* generic error */
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static HANDLER_DEF(segv_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
handler_init( &context, HANDLER_CONTEXT );
#if defined(TRAP_sig) && defined(CR2_sig)
/* we want the page-fault case to be fast */
if (TRAP_sig(HANDLER_CONTEXT) == 14)
if (VIRTUAL_HandleFault( (LPVOID)CR2_sig(HANDLER_CONTEXT) )) return;
#endif
save_context( &context, HANDLER_CONTEXT );
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionAddress = (LPVOID)context.Eip;
rec.NumberParameters = 0;
#ifdef TRAP_sig
switch(TRAP_sig(HANDLER_CONTEXT))
{
case 4: /* Overflow exception */
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case 5: /* Bound range exception */
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case 6: /* Invalid opcode exception */
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case 12: /* Stack fault */
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
case 11: /* Segment not present exception */
case 13: /* General protection fault */
if (INSTR_EmulateInstruction( &context )) goto restore;
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
break;
case 14: /* Page fault */
#ifdef CR2_sig
rec.NumberParameters = 2;
#ifdef ERROR_sig
rec.ExceptionInformation[0] = (ERROR_sig(HANDLER_CONTEXT) & 2) != 0;
#else
rec.ExceptionInformation[0] = 0;
#endif /* ERROR_sig */
rec.ExceptionInformation[1] = CR2_sig(HANDLER_CONTEXT);
#endif /* CR2_sig */
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
break;
case 17: /* Alignment check exception */
/* FIXME: pass through exception handler first? */
if (context.EFlags & 0x00040000)
{
/* Disable AC flag, return */
context.EFlags &= ~0x00040000;
goto restore;
}
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR( "Got unexpected trap %ld\n", TRAP_sig(HANDLER_CONTEXT) );
/* fall through */
case 2: /* NMI interrupt */
case 7: /* Device not available exception */
case 8: /* Double fault exception */
case 10: /* Invalid TSS exception */
case 15: /* Unknown exception */
case 18: /* Machine check exception */
case 19: /* Cache flush exception */
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
#else /* TRAP_sig */
if (INSTR_EmulateInstruction( &context )) return;
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION; /* generic error */
#endif /* TRAP_sig */
REGS_FUNC(RtlRaiseException)( &rec, &context );
restore:
restore_context( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static HANDLER_DEF(trap_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
handler_init( &context, HANDLER_CONTEXT );
#ifdef TRAP_sig
rec.ExceptionCode = (TRAP_sig(HANDLER_CONTEXT) == 1) ?
EXCEPTION_SINGLE_STEP : EXCEPTION_BREAKPOINT;
#else
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
#endif /* TRAP_sig */
save_context( &context, HANDLER_CONTEXT );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Eip;
rec.NumberParameters = 0;
REGS_FUNC(RtlRaiseException)( &rec, &context );
restore_context( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static HANDLER_DEF(fpe_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
handler_init( &context, HANDLER_CONTEXT );
save_fpu( &context, HANDLER_CONTEXT );
#ifdef TRAP_sig
switch(TRAP_sig(HANDLER_CONTEXT))
{
case 0: /* Division by zero exception */
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
case 9: /* Coprocessor segment overrun */
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
case 16: /* Floating point exception */
rec.ExceptionCode = get_fpu_code( &context );
break;
default:
ERR( "Got unexpected trap %ld\n", TRAP_sig(HANDLER_CONTEXT) );
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
#else /* TRAP_sig */
rec.ExceptionCode = get_fpu_code( &context );
#endif /* TRAP_sig */
save_context( &context, HANDLER_CONTEXT );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Eip;
rec.NumberParameters = 0;
REGS_FUNC(RtlRaiseException)( &rec, &context );
restore_context( &context, HANDLER_CONTEXT );
restore_fpu( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static HANDLER_DEF(int_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
handler_init( &context, HANDLER_CONTEXT );
save_context( &context, HANDLER_CONTEXT );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Eip;
rec.NumberParameters = 0;
REGS_FUNC(RtlRaiseException)( &rec, &context );
restore_context( &context, HANDLER_CONTEXT );
}
/***********************************************************************
* set_handler
*
* Set a signal handler
*/
static int set_handler( int sig, void (*func)() )
{
#ifdef linux
struct kernel_sigaction sig_act;
sig_act.sa_handler = func;
sig_act.sa_flags = SA_RESTART | SA_NOMASK;
sig_act.sa_mask = 0;
/* point to the top of the stack */
sig_act.sa_restorer = (char *)NtCurrentTeb()->signal_stack + SIGNAL_STACK_SIZE;
return wine_sigaction( sig, &sig_act, NULL );
#else /* linux */
struct sigaction sig_act;
sig_act.sa_handler = func;
sigemptyset( &sig_act.sa_mask );
# if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
sig_act.sa_flags = SA_ONSTACK;
# elif defined (__svr4__) || defined(_SCO_DS)
sig_act.sa_flags = SA_SIGINFO | SA_ONSTACK | SA_RESTART;
# elif defined(__EMX__)
sig_act.sa_flags = 0; /* FIXME: EMX has only SA_ACK and SA_SYSV */
# else
sig_act.sa_flags = 0;
# endif
return sigaction( sig, &sig_act, NULL );
#endif /* linux */
}
/**********************************************************************
* SIGNAL_Init
*/
BOOL SIGNAL_Init(void)
{
#ifdef HAVE_WORKING_SIGALTSTACK
struct sigaltstack ss;
if ((ss.ss_sp = NtCurrentTeb()->signal_stack))
{
ss.ss_size = SIGNAL_STACK_SIZE;
ss.ss_flags = 0;
if (sigaltstack(&ss, NULL) < 0)
{
perror("sigaltstack");
/* fall through on error and try it differently */
}
}
#endif /* HAVE_SIGALTSTACK */
/* ignore SIGPIPE so that WINSOCK can get a EPIPE error instead */
signal( SIGPIPE, SIG_IGN );
/* automatic child reaping to avoid zombies */
signal( SIGCHLD, SIG_IGN );
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;
#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 TRUE;
error:
perror("sigaction");
return FALSE;
}
#endif /* __i386__ */

View file

@ -3516,7 +3516,7 @@ static HRESULT WINAPI DGA_IDirectDrawImpl_SetDisplayMode(
TSXF86DGASetViewPort(display,DefaultScreen(display),0,0);
#ifdef RESTORE_SIGNALS
EXC_InitHandlers();
SIGNAL_Init();
#endif
return DD_OK;
}
@ -3918,7 +3918,7 @@ static HRESULT WINAPI DGA_IDirectDraw2Impl_RestoreDisplayMode(LPDIRECTDRAW2 ifac
Sleep(1000);
TSXF86DGADirectVideo(display,DefaultScreen(display),0);
#ifdef RESTORE_SIGNALS
EXC_InitHandlers();
SIGNAL_Init();
#endif
return DD_OK;
}
@ -3969,7 +3969,7 @@ static ULONG WINAPI DGA_IDirectDraw2Impl_Release(LPDIRECTDRAW2 iface) {
#endif
#ifdef RESTORE_SIGNALS
EXC_InitHandlers();
SIGNAL_Init();
#endif
HeapFree(GetProcessHeap(),0,This);
return 0;
@ -4958,7 +4958,7 @@ static HRESULT WINAPI DGA_DirectDrawCreate( LPDIRECTDRAW *lplpDD, LPUNKNOWN pUnk
depth = DefaultDepthOfScreen(X11DRV_GetXScreen());
_common_depth_to_pixelformat(depth, &((*ilplpDD)->d.directdraw_pixelformat), &((*ilplpDD)->d.screen_pixelformat), NULL);
#ifdef RESTORE_SIGNALS
EXC_InitHandlers();
SIGNAL_Init();
#endif
return DD_OK;

View file

@ -9,7 +9,6 @@
#include <sys/types.h> /* u_long ... */
#include "windef.h"
#include "sig_context.h"
#include "miscemu.h"
#define STEP_FLAG 0x100 /* single step flag */

View file

@ -10,7 +10,6 @@
#include <sys/types.h> /* pid_t */
#include "winbase.h" /* for LPSTARTUPINFO32A */
#include "winnt.h" /* for PCONTEXT */
#include "sig_context.h"
typedef struct _DOSSYSTEM {
int id;

View file

@ -184,10 +184,6 @@ extern int DPMI_CallRMProc(CONTEXT86*,LPWORD,int,int);
/* msdos/xms.c */
extern void WINAPI XMS_Handler(CONTEXT86*);
/* loader/signal.c */
extern BOOL SIGNAL_Init(void);
extern void SIGNAL_SetHandler( int sig, void (*func)() );
/* misc/aspi.c */
extern void ASPI_DOS_HandleInt(CONTEXT86 *context);

View file

@ -1,268 +0,0 @@
/*
* Signal context definitions
*
* Copyright 1995 Alexandre Julliard
*/
#ifndef __WINE_SIG_CONTEXT_H
#define __WINE_SIG_CONTEXT_H
#ifdef __i386__
#ifdef linux
typedef struct
{
unsigned short sc_gs, __gsh;
unsigned short sc_fs, __fsh;
unsigned short sc_es, __esh;
unsigned short sc_ds, __dsh;
unsigned long sc_edi;
unsigned long sc_esi;
unsigned long sc_ebp;
unsigned long sc_esp;
unsigned long sc_ebx;
unsigned long sc_edx;
unsigned long sc_ecx;
unsigned long sc_eax;
unsigned long sc_trapno;
unsigned long sc_err;
unsigned long sc_eip;
unsigned short sc_cs, __csh;
unsigned long sc_eflags;
unsigned long esp_at_signal;
unsigned short sc_ss, __ssh;
unsigned long i387;
unsigned long oldmask;
unsigned long cr2;
} SIGCONTEXT;
#define __HAVE_SIGCONTEXT
#define HANDLER_DEF(name) void name (int signal, SIGCONTEXT __context)
#define HANDLER_CONTEXT (&__context)
#endif /* linux */
#ifdef BSDI
#define EAX_sig(context) ((context)->tf_eax)
#define EBX_sig(context) ((context)->tf_ebx)
#define ECX_sig(context) ((context)->tf_ecx)
#define EDX_sig(context) ((context)->tf_edx)
#define ESI_sig(context) ((context)->tf_esi)
#define EDI_sig(context) ((context)->tf_edi)
#define EBP_sig(context) ((context)->tf_ebp)
#define CS_sig(context) ((context)->tf_cs)
#define DS_sig(context) ((context)->tf_ds)
#define ES_sig(context) ((context)->tf_es)
#define SS_sig(context) ((context)->tf_ss)
#include <machine/frame.h>
typedef struct trapframe SIGCONTEXT;
#define __HAVE_SIGCONTEXT
#define HANDLER_DEF(name) void name(int signal, int code, SIGCONTEXT *__context)
#define HANDLER_CONTEXT __context
#define EFL_sig(context) ((context)->tf_eflags)
#define EIP_sig(context) (*((unsigned long*)&(context)->tf_eip))
#define ESP_sig(context) (*((unsigned long*)&(context)->tf_esp))
#endif /* bsdi */
#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
#include <signal.h>
typedef struct sigcontext SIGCONTEXT;
#define __HAVE_SIGCONTEXT
#define HANDLER_DEF(name) void name(int signal, int code, SIGCONTEXT *__context)
#define HANDLER_CONTEXT __context
#endif /* FreeBSD */
#if defined(__svr4__) || defined(_SCO_DS) || defined(__sun)
#include <signal.h>
#ifdef _SCO_DS
#include <sys/regset.h>
#endif
/* Solaris kludge */
#undef ERR
#include <sys/ucontext.h>
#undef ERR
typedef struct ucontext SIGCONTEXT;
#define __HAVE_SIGCONTEXT
#define HANDLER_DEF(name) void name(int signal, void *siginfo, SIGCONTEXT *__context)
#define HANDLER_CONTEXT __context
#endif /* svr4 || SCO_DS */
#ifdef __EMX__
typedef struct _fpreg /* Note 1 */
{
ULONG losig;
ULONG hisig;
USHORT signexp;
} FPREG;
typedef FPREG *PFPREG;
typedef struct _CONTEXT /* Note 1 */
{
ULONG ContextFlags;
ULONG ctx_env[7];
FPREG ctx_stack[8];
ULONG ctx_SegGs;
ULONG ctx_SegFs;
ULONG ctx_SegEs;
ULONG ctx_SegDs;
ULONG ctx_RegEdi;
ULONG ctx_RegEsi;
ULONG ctx_RegEax;
ULONG ctx_RegEbx;
ULONG ctx_RegEcx;
ULONG ctx_RegEdx;
ULONG ctx_RegEbp;
ULONG ctx_RegEip;
ULONG ctx_SegCs;
ULONG ctx_EFlags;
ULONG ctx_RegEsp;
ULONG ctx_SegSs;
} SIGCONTEXT;
#define __HAVE_SIGCONTEXT
/*typedef CONTEXTRECORD *PCONTEXTRECORD;*/
#endif /* __EMX__ */
#if defined(linux) || defined(__NetBSD__) || defined(__FreeBSD__) \
|| defined(__OpenBSD__)
#define EAX_sig(context) ((context)->sc_eax)
#define EBX_sig(context) ((context)->sc_ebx)
#define ECX_sig(context) ((context)->sc_ecx)
#define EDX_sig(context) ((context)->sc_edx)
#define ESI_sig(context) ((context)->sc_esi)
#define EDI_sig(context) ((context)->sc_edi)
#define EBP_sig(context) ((context)->sc_ebp)
#define CS_sig(context) ((context)->sc_cs)
#define DS_sig(context) ((context)->sc_ds)
#define ES_sig(context) ((context)->sc_es)
#define SS_sig(context) ((context)->sc_ss)
#ifdef linux
/* FS and GS are now in the sigcontext struct of FreeBSD, but not
* saved by the exception handling. duh.
*/
#define FS_sig(context) ((context)->sc_fs)
#define GS_sig(context) ((context)->sc_gs)
#define CR2_sig(context) ((context)->cr2)
#define TRAP_sig(context) ((context)->sc_trapno)
#define ERROR_sig(context) ((context)->sc_err)
#define FPU_sig(context) ((FLOATING_SAVE_AREA*)((context)->i387))
#endif
#ifndef __FreeBSD__
#define EFL_sig(context) ((context)->sc_eflags)
#else
#define EFL_sig(context) ((context)->sc_efl)
/* FreeBSD, see i386/i386/traps.c::trap_pfault va->err kludge */
#define CR2_sig(context) ((context)->sc_err)
#endif
#define EIP_sig(context) (*((unsigned long*)&(context)->sc_eip))
#define ESP_sig(context) (*((unsigned long*)&(context)->sc_esp))
#endif /* linux || __NetBSD__ || __FreeBSD__ || __OpenBSD__ */
#if defined(__svr4__) || defined(_SCO_DS) || defined(__sun)
#ifdef _SCO_DS
#define gregs regs
#endif
#define EAX_sig(context) ((context)->uc_mcontext.gregs[EAX])
#define EBX_sig(context) ((context)->uc_mcontext.gregs[EBX])
#define ECX_sig(context) ((context)->uc_mcontext.gregs[ECX])
#define EDX_sig(context) ((context)->uc_mcontext.gregs[EDX])
#define ESI_sig(context) ((context)->uc_mcontext.gregs[ESI])
#define EDI_sig(context) ((context)->uc_mcontext.gregs[EDI])
#define EBP_sig(context) ((context)->uc_mcontext.gregs[EBP])
#define CS_sig(context) ((context)->uc_mcontext.gregs[CS])
#define DS_sig(context) ((context)->uc_mcontext.gregs[DS])
#define ES_sig(context) ((context)->uc_mcontext.gregs[ES])
#define SS_sig(context) ((context)->uc_mcontext.gregs[SS])
#define FS_sig(context) ((context)->uc_mcontext.gregs[FS])
#define GS_sig(context) ((context)->uc_mcontext.gregs[GS])
#define EFL_sig(context) ((context)->uc_mcontext.gregs[EFL])
#define EIP_sig(context) ((context)->uc_mcontext.gregs[EIP])
#ifdef R_ESP
#define ESP_sig(context) ((context)->uc_mcontext.gregs[R_ESP])
#else
#define ESP_sig(context) ((context)->uc_mcontext.gregs[ESP])
#endif
#ifdef TRAPNO
#define TRAP_sig(context) ((context)->uc_mcontext.gregs[TRAPNO])
#endif
#endif /* svr4 || SCO_DS */
#ifdef __EMX__
#define EAX_sig(context) ((context)->ctx_RegEax)
#define EBX_sig(context) ((context)->ctx_RegEbx)
#define ECX_sig(context) ((context)->ctx_RegEcx)
#define EDX_sig(context) ((context)->ctx_RegEdx)
#define ESI_sig(context) ((context)->ctx_RegEsi)
#define EDI_sig(context) ((context)->ctx_RegEdi)
#define EBP_sig(context) ((context)->ctx_RegEbp)
#define ESP_sig(context) ((context)->ctx_RegEsp)
#define CS_sig(context) ((context)->ctx_SegCs)
#define DS_sig(context) ((context)->ctx_SegDs)
#define ES_sig(context) ((context)->ctx_SegEs)
#define SS_sig(context) ((context)->ctx_SegSs)
#define FS_sig(context) ((context)->ctx_SegFs)
#define GS_sig(context) ((context)->ctx_SegGs)
#define EFL_sig(context) ((context)->ctx_EFlags)
#define EIP_sig(context) ((context)->ctx_RegEip)
#endif /* __EMX__ */
#ifdef FS_sig
#include "syslevel.h"
#define HANDLER_INIT() \
do { int fs = IS_SELECTOR_SYSTEM(CS_sig(HANDLER_CONTEXT)) ? \
FS_sig(HANDLER_CONTEXT) : SYSLEVEL_Win16CurrentTeb; \
if (!fs) fs = SYSLEVEL_EmergencyTeb; \
SET_FS(fs); } while (0)
#else
#define HANDLER_INIT() \
do { int fs; GET_FS(fs); fs &= 0xffff; \
if (!IS_SELECTOR_SYSTEM(CS_sig(HANDLER_CONTEXT))) \
fs = SYSLEVEL_Win16CurrentTeb; \
if (!fs) fs = SYSLEVEL_EmergencyTeb; \
SET_FS(fs); } while (0)
#endif
#else /* __i386__ */
#define HANDLER_DEF(name) void name (int signal)
#define HANDLER_INIT() /* nothing */
#endif /* __i386__ */
#ifndef __HAVE_SIGCONTEXT
/* empty entry for non x86 architectures mostly. */
typedef DWORD SIGCONTEXT;
#define HANDLER_CONTEXT 0
#endif
#endif /* __WINE_SIG_CONTEXT_H */

View file

@ -169,7 +169,7 @@ static inline EXCEPTION_FRAME * WINE_UNUSED EXC_pop_frame( EXCEPTION_FRAME *fram
typedef DWORD (*DEBUGHOOK)( EXCEPTION_RECORD *, CONTEXT *, BOOL );
extern void EXC_SetDebugEventHook( DEBUGHOOK hook );
extern DEBUGHOOK EXC_GetDebugEventHook(void);
extern void EXC_InitHandlers(void);
extern BOOL SIGNAL_Init(void);
#endif
#endif /* __WINE_WINE_EXCEPTION_H */

View file

@ -15,7 +15,6 @@ C_SRCS = \
pe_image.c \
pe_resource.c \
resource.c \
signal.c \
task.c
GLUE = task.c

View file

@ -65,9 +65,6 @@ BOOL MAIN_MainInit(void)
/* Initialize syslevel handling */
SYSLEVEL_Init();
/* Initialize signal handling */
if (!SIGNAL_Init()) return FALSE;
/* Load the configuration file */
if (!PROFILE_LoadWineIni()) return FALSE;

View file

@ -1,161 +0,0 @@
/*
* Wine signal handling
*
* Copyright 1995 Alexandre Julliard
*/
#include "config.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <time.h>
#include <setjmp.h>
#include <sys/time.h>
#include <sys/timeb.h>
#include <sys/types.h>
#include <sys/wait.h>
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef HAVE_SYSCALL_H
# include <syscall.h>
#else
# ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
# endif
#endif
#include "winsock.h"
#include "global.h"
#include "options.h"
#include "miscemu.h"
#include "dosexe.h"
#include "thread.h"
#include "wine/exception.h"
#include "debugtools.h"
/* Linux sigaction function */
#if defined(linux) && defined(__i386__)
/* This is the sigaction structure from the Linux 2.1.20 kernel. */
#undef sa_handler
struct kernel_sigaction
{
void (*sa_handler)();
unsigned long sa_mask;
unsigned long sa_flags;
void (*sa_restorer)();
};
/* Similar to the sigaction function in libc, except it leaves alone the
restorer field, which is used to specify the signal stack address */
static inline int wine_sigaction( int sig, struct kernel_sigaction *new,
struct kernel_sigaction *old )
{
#ifdef __PIC__
__asm__ __volatile__( "pushl %%ebx\n\t"
"movl %2,%%ebx\n\t"
"int $0x80\n\t"
"popl %%ebx"
: "=a" (sig)
: "0" (SYS_sigaction),
"r" (sig),
"c" (new),
"d" (old) );
#else
__asm__ __volatile__( "int $0x80"
: "=a" (sig)
: "0" (SYS_sigaction),
"b" (sig),
"c" (new),
"d" (old) );
#endif /* __PIC__ */
if (sig>=0)
return 0;
errno = -sig;
return -1;
}
#endif /* linux && __i386__ */
/* Signal stack */
static char SIGNAL_Stack[16384];
/**********************************************************************
* SIGNAL_SetHandler
*/
void SIGNAL_SetHandler( int sig, void (*func)() )
{
int ret;
#if defined(linux) && defined(__i386__)
struct kernel_sigaction sig_act;
sig_act.sa_handler = func;
sig_act.sa_flags = SA_RESTART | SA_NOMASK;
sig_act.sa_mask = 0;
/* Point to the top of the stack, minus 4 just in case, and make
it aligned */
sig_act.sa_restorer =
(void (*)())((int)(SIGNAL_Stack + sizeof(SIGNAL_Stack) - 4) & ~3);
ret = wine_sigaction( sig, &sig_act, NULL );
#else /* linux && __i386__ */
struct sigaction sig_act;
sig_act.sa_handler = func;
sigemptyset( &sig_act.sa_mask );
# if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
sig_act.sa_flags = SA_ONSTACK;
# elif defined (__svr4__) || defined(_SCO_DS)
sig_act.sa_flags = SA_SIGINFO | SA_ONSTACK | SA_RESTART;
# elif defined(__EMX__)
sig_act.sa_flags = 0; /* FIXME: EMX has only SA_ACK and SA_SYSV */
# else
sig_act.sa_flags = 0;
# endif
ret = sigaction( sig, &sig_act, NULL );
#endif /* linux && __i386__ */
if (ret < 0)
{
perror( "sigaction" );
exit(1);
}
}
/**********************************************************************
* SIGNAL_Init
*/
BOOL SIGNAL_Init(void)
{
#ifdef HAVE_WORKING_SIGALTSTACK
struct sigaltstack ss;
ss.ss_sp = SIGNAL_Stack;
ss.ss_size = sizeof(SIGNAL_Stack);
ss.ss_flags = 0;
if (sigaltstack(&ss, NULL) < 0)
{
perror("sigaltstack");
/* fall through on error and try it differently */
}
#endif /* HAVE_SIGALTSTACK */
/* ignore SIGPIPE so that WINSOCK can get a EPIPE error instead */
signal (SIGPIPE, SIG_IGN);
/* automatic child reaping to avoid zombies */
signal (SIGCHLD, SIG_IGN);
EXC_InitHandlers();
return TRUE;
}

View file

@ -362,6 +362,9 @@ BOOL PROCESS_Init(void)
if (!(SystemHeap = HeapCreate( HEAP_GROWABLE, 0x10000, 0 ))) return FALSE;
initial_pdb.system_heap = initial_pdb.heap = SystemHeap;
/* Initialize signal handling */
if (!SIGNAL_Init()) return FALSE;
/* Create the environment DB of the first process */
if (!PROCESS_CreateEnvDB()) return FALSE;

View file

@ -28,6 +28,7 @@ static int *ph_errno = &h_errno;
#include "thread.h"
#include "server.h"
#include "winbase.h"
#include "wine/exception.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(thread)
@ -130,7 +131,16 @@ static void SYSDEPS_StartThread( TEB *teb )
{
SYSDEPS_SetCurThread( teb );
CLIENT_InitThread();
teb->startup();
SIGNAL_Init();
__TRY
{
teb->startup();
}
__EXCEPT(UnhandledExceptionFilter)
{
TerminateThread( GetCurrentThread(), GetExceptionCode() );
}
__ENDTRY
SYSDEPS_ExitThread(); /* should never get here */
}