mirror of
https://github.com/reactos/wine.git
synced 2024-11-26 21:20:25 +00:00
703 lines
19 KiB
C
703 lines
19 KiB
C
/*
|
|
* PowerPC signal handling routines
|
|
*
|
|
* Copyright 2002 Marcus Meissner, SuSE Linux AG
|
|
*
|
|
* 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 __powerpc__
|
|
|
|
#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_SYSCALL_H
|
|
# include <syscall.h>
|
|
#else
|
|
# ifdef HAVE_SYS_SYSCALL_H
|
|
# include <sys/syscall.h>
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_VM86_H
|
|
# include <sys/vm86.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_SIGNAL_H
|
|
# include <sys/signal.h>
|
|
#endif
|
|
|
|
#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
|
|
|
|
typedef struct ucontext SIGCONTEXT;
|
|
|
|
# define HANDLER_DEF(name) void name( int __signal, struct siginfo *__siginfo, SIGCONTEXT *__context )
|
|
# define HANDLER_CONTEXT (__context)
|
|
|
|
/* All Registers access - only for local access */
|
|
# define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
|
|
|
|
|
|
/* Gpr Registers access */
|
|
# define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
|
|
|
|
# define IAR_sig(context) REG_sig(nip, context) /* Program counter */
|
|
# define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */
|
|
# define CTR_sig(context) REG_sig(ctr, context) /* Count register */
|
|
|
|
# define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */
|
|
# define LR_sig(context) REG_sig(link, context) /* Link register */
|
|
# define CR_sig(context) REG_sig(ccr, context) /* Condition register */
|
|
|
|
/* Float Registers access */
|
|
# define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
|
|
|
|
# define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
|
|
|
|
/* Exception Registers access */
|
|
# define DAR_sig(context) REG_sig(dar, context)
|
|
# define DSISR_sig(context) REG_sig(dsisr, context)
|
|
# define TRAP_sig(context) REG_sig(trap, context)
|
|
|
|
#endif /* linux */
|
|
|
|
#ifdef __APPLE__
|
|
|
|
# include <sys/ucontext.h>
|
|
|
|
# include <sys/types.h>
|
|
# include <signal.h>
|
|
typedef siginfo_t siginfo;
|
|
|
|
typedef struct ucontext SIGCONTEXT;
|
|
|
|
|
|
# define HANDLER_DEF(name) void name( int __signal, siginfo *__siginfo, SIGCONTEXT *__context )
|
|
# define HANDLER_CONTEXT (__context)
|
|
|
|
/* All Registers access - only for local access */
|
|
# define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
|
|
# define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
|
|
# define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
|
|
# define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
|
|
|
|
/* Gpr Registers access */
|
|
# define GPR_sig(reg_num, context) REG_sig(r##reg_num, context)
|
|
|
|
# define IAR_sig(context) REG_sig(srr0, context) /* Program counter */
|
|
# define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */
|
|
# define CTR_sig(context) REG_sig(ctr, context)
|
|
|
|
# define XER_sig(context) REG_sig(xer, context) /* Link register */
|
|
# define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */
|
|
# define CR_sig(context) REG_sig(cr, context) /* Condition register */
|
|
|
|
/* Float Registers access */
|
|
# define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
|
|
|
|
# define FPSCR_sig(context) FLOATREG_sig(fpscr, context)
|
|
|
|
/* Exception Registers access */
|
|
# define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */
|
|
# define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
|
|
# define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
|
|
|
|
/* Signal defs : Those are undefined on darwin
|
|
SIGBUS
|
|
#undef BUS_ADRERR
|
|
#undef BUS_OBJERR
|
|
SIGILL
|
|
#undef ILL_ILLOPN
|
|
#undef ILL_ILLTRP
|
|
#undef ILL_ILLADR
|
|
#undef ILL_COPROC
|
|
#undef ILL_PRVREG
|
|
#undef ILL_BADSTK
|
|
SIGTRAP
|
|
#undef TRAP_BRKPT
|
|
#undef TRAP_TRACE
|
|
SIGFPE
|
|
*/
|
|
|
|
#endif /* __APPLE__ */
|
|
|
|
|
|
|
|
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 )
|
|
{
|
|
|
|
#define C(x) context->Gpr##x = GPR_sig(x,sigcontext)
|
|
/* Save Gpr registers */
|
|
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
|
|
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
|
|
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
|
|
C(31);
|
|
#undef C
|
|
|
|
context->Iar = IAR_sig(sigcontext); /* Program Counter */
|
|
context->Msr = MSR_sig(sigcontext); /* Machine State Register (Supervisor) */
|
|
context->Ctr = CTR_sig(sigcontext);
|
|
|
|
context->Xer = XER_sig(sigcontext);
|
|
context->Lr = LR_sig(sigcontext);
|
|
context->Cr = CR_sig(sigcontext);
|
|
|
|
/* Saving Exception regs */
|
|
context->Dar = DAR_sig(sigcontext);
|
|
context->Dsisr = DSISR_sig(sigcontext);
|
|
context->Trap = TRAP_sig(sigcontext);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* restore_context
|
|
*
|
|
* Build a sigcontext from the register values.
|
|
*/
|
|
static void restore_context( const CONTEXT *context, SIGCONTEXT *sigcontext )
|
|
{
|
|
|
|
#define C(x) GPR_sig(x,sigcontext) = context->Gpr##x
|
|
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
|
|
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
|
|
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
|
|
C(31);
|
|
#undef C
|
|
|
|
IAR_sig(sigcontext) = context->Iar; /* Program Counter */
|
|
MSR_sig(sigcontext) = context->Msr; /* Machine State Register (Supervisor) */
|
|
CTR_sig(sigcontext) = context->Ctr;
|
|
|
|
XER_sig(sigcontext) = context->Xer;
|
|
LR_sig(sigcontext) = context->Lr;
|
|
CR_sig(sigcontext) = context->Cr;
|
|
|
|
/* Setting Exception regs */
|
|
DAR_sig(sigcontext) = context->Dar;
|
|
DSISR_sig(sigcontext) = context->Dsisr;
|
|
TRAP_sig(sigcontext) = context->Trap;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* save_fpu
|
|
*
|
|
* Set the FPU context from a sigcontext.
|
|
*/
|
|
static inline void save_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
|
|
{
|
|
#define C(x) context->Fpr##x = FLOAT_sig(x,sigcontext)
|
|
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
|
|
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
|
|
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
|
|
C(31);
|
|
#undef C
|
|
context->Fpscr = FPSCR_sig(sigcontext);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* restore_fpu
|
|
*
|
|
* Restore the FPU context to a sigcontext.
|
|
*/
|
|
static inline void restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
|
|
{
|
|
#define C(x) FLOAT_sig(x,sigcontext) = context->Fpr##x
|
|
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
|
|
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
|
|
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
|
|
C(31);
|
|
#undef C
|
|
FPSCR_sig(sigcontext) = context->Fpscr;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* get_cpu_context
|
|
*
|
|
* Get the context of the current thread.
|
|
*/
|
|
void get_cpu_context( CONTEXT *context )
|
|
{
|
|
FIXME("not implemented\n");
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* set_cpu_context
|
|
*
|
|
* Set the new CPU context.
|
|
*/
|
|
void set_cpu_context( const CONTEXT *context )
|
|
{
|
|
FIXME("not implemented\n");
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* get_fpu_code
|
|
*
|
|
* Get the FPU exception code from the FPU status.
|
|
*/
|
|
static inline DWORD get_fpu_code( const CONTEXT *context )
|
|
{
|
|
DWORD status = context->Fpscr;
|
|
|
|
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 */
|
|
}
|
|
|
|
/**********************************************************************
|
|
* do_segv
|
|
*
|
|
* Implementation of SIGSEGV handler.
|
|
*/
|
|
static void do_segv( CONTEXT *context, int trap, int err, int code, void * addr )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
DWORD page_fault_code = EXCEPTION_ACCESS_VIOLATION;
|
|
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionAddress = addr;
|
|
rec.NumberParameters = 0;
|
|
|
|
switch (trap) {
|
|
case SIGSEGV:
|
|
switch ( code & 0xffff ) {
|
|
case SEGV_MAPERR:
|
|
case SEGV_ACCERR:
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = 0; /* FIXME ? */
|
|
rec.ExceptionInformation[1] = (ULONG_PTR)addr;
|
|
if (!(page_fault_code=VIRTUAL_HandleFault(addr)))
|
|
return;
|
|
rec.ExceptionCode = page_fault_code;
|
|
break;
|
|
default:FIXME("Unhandled SIGSEGV/%x\n",code);
|
|
break;
|
|
}
|
|
break;
|
|
case SIGBUS:
|
|
switch ( code & 0xffff ) {
|
|
case BUS_ADRALN:
|
|
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
|
|
break;
|
|
#ifdef BUS_ADRERR
|
|
case BUS_ADRERR:
|
|
#endif
|
|
#ifdef BUS_OBJERR
|
|
case BUS_OBJERR:
|
|
/* FIXME: correct for all cases ? */
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = 0; /* FIXME ? */
|
|
rec.ExceptionInformation[1] = (ULONG_PTR)addr;
|
|
if (!(page_fault_code=VIRTUAL_HandleFault(addr)))
|
|
return;
|
|
rec.ExceptionCode = page_fault_code;
|
|
break;
|
|
#endif
|
|
default:FIXME("Unhandled SIGBUS/%x\n",code);
|
|
break;
|
|
}
|
|
break;
|
|
case SIGILL:
|
|
switch ( code & 0xffff ) {
|
|
case ILL_ILLOPC: /* illegal opcode */
|
|
#ifdef ILL_ILLOPN
|
|
case ILL_ILLOPN: /* illegal operand */
|
|
#endif
|
|
#ifdef ILL_ILLADR
|
|
case ILL_ILLADR: /* illegal addressing mode */
|
|
#endif
|
|
#ifdef ILL_ILLTRP
|
|
case ILL_ILLTRP: /* illegal trap */
|
|
#endif
|
|
#ifdef ILL_COPROC
|
|
case ILL_COPROC: /* coprocessor error */
|
|
#endif
|
|
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
case ILL_PRVOPC: /* privileged opcode */
|
|
#ifdef ILL_PRVREG
|
|
case ILL_PRVREG: /* privileged register */
|
|
#endif
|
|
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
|
|
break;
|
|
#ifdef ILL_BADSTK
|
|
case ILL_BADSTK: /* internal stack error */
|
|
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
|
|
break;
|
|
#endif
|
|
default:FIXME("Unhandled SIGILL/%x\n", code);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
__regs_RtlRaiseException( &rec, context );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* do_trap
|
|
*
|
|
* Implementation of SIGTRAP handler.
|
|
*/
|
|
static void do_trap( CONTEXT *context, int code, void * addr )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = addr;
|
|
rec.NumberParameters = 0;
|
|
|
|
/* FIXME: check if we might need to modify PC */
|
|
switch (code & 0xffff) {
|
|
#ifdef TRAP_BRKPT
|
|
case TRAP_BRKPT:
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
break;
|
|
#endif
|
|
#ifdef TRAP_TRACE
|
|
case TRAP_TRACE:
|
|
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
|
|
break;
|
|
#endif
|
|
default:FIXME("Unhandled SIGTRAP/%x\n", code);
|
|
break;
|
|
}
|
|
__regs_RtlRaiseException( &rec, context );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* do_trap
|
|
*
|
|
* Implementation of SIGFPE handler.
|
|
*/
|
|
static void do_fpe( CONTEXT *context, int code, void * addr )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
|
|
switch ( code & 0xffff ) {
|
|
#ifdef FPE_FLTSUB
|
|
case FPE_FLTSUB:
|
|
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_INTDIV
|
|
case FPE_INTDIV:
|
|
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_INTOVF
|
|
case FPE_INTOVF:
|
|
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTDIV
|
|
case FPE_FLTDIV:
|
|
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTOVF
|
|
case FPE_FLTOVF:
|
|
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTUND
|
|
case FPE_FLTUND:
|
|
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTRES
|
|
case FPE_FLTRES:
|
|
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTINV
|
|
case FPE_FLTINV:
|
|
#endif
|
|
default:
|
|
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
|
|
break;
|
|
}
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = addr;
|
|
rec.NumberParameters = 0;
|
|
__regs_RtlRaiseException( &rec, context );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* segv_handler
|
|
*
|
|
* Handler for SIGSEGV and related errors.
|
|
*/
|
|
static HANDLER_DEF(segv_handler)
|
|
{
|
|
CONTEXT context;
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
do_segv( &context, __siginfo->si_signo, __siginfo->si_errno, __siginfo->si_code, __siginfo->si_addr );
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* trap_handler
|
|
*
|
|
* Handler for SIGTRAP.
|
|
*/
|
|
static HANDLER_DEF(trap_handler)
|
|
{
|
|
CONTEXT context;
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
do_trap( &context, __siginfo->si_code, __siginfo->si_addr );
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* fpe_handler
|
|
*
|
|
* Handler for SIGFPE.
|
|
*/
|
|
static HANDLER_DEF(fpe_handler)
|
|
{
|
|
CONTEXT context;
|
|
save_fpu( &context, HANDLER_CONTEXT );
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
do_fpe( &context, __siginfo->si_code, __siginfo->si_addr );
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
restore_fpu( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* int_handler
|
|
*
|
|
* Handler for SIGINT.
|
|
*/
|
|
static HANDLER_DEF(int_handler)
|
|
{
|
|
if (!dispatch_signal(SIGINT))
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
rec.ExceptionCode = CONTROL_C_EXIT;
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Iar;
|
|
rec.NumberParameters = 0;
|
|
__regs_RtlRaiseException( &rec, &context );
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* abrt_handler
|
|
*
|
|
* Handler for SIGABRT.
|
|
*/
|
|
static HANDLER_DEF(abrt_handler)
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
|
|
rec.ExceptionFlags = EH_NONCONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Iar;
|
|
rec.NumberParameters = 0;
|
|
__regs_RtlRaiseException( &rec, &context ); /* Should never return.. */
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* term_handler
|
|
*
|
|
* Handler for SIGTERM.
|
|
*/
|
|
static HANDLER_DEF(term_handler)
|
|
{
|
|
server_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) <= getpagesize() );
|
|
return 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;
|
|
return sigaction( sig, &sig_act, NULL );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_set_signal_handler (NTDLL.@)
|
|
*/
|
|
int __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
|
|
*/
|
|
BOOL SIGNAL_Init(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( SIGTERM, (void (*)())term_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 TRUE;
|
|
|
|
error:
|
|
perror("sigaction");
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* __wine_enter_vm86 (NTDLL.@)
|
|
*/
|
|
void __wine_enter_vm86( CONTEXT *context )
|
|
{
|
|
MESSAGE("vm86 mode not supported on this platform\n");
|
|
}
|
|
|
|
/**********************************************************************
|
|
* DbgBreakPoint (NTDLL.@)
|
|
*/
|
|
void WINAPI DbgBreakPoint(void)
|
|
{
|
|
kill(getpid(), SIGTRAP);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* DbgUserBreakPoint (NTDLL.@)
|
|
*/
|
|
void WINAPI DbgUserBreakPoint(void)
|
|
{
|
|
kill(getpid(), SIGTRAP);
|
|
}
|
|
|
|
#endif /* __powerpc__ */
|