532 lines
14 KiB
C
532 lines
14 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifdef __powerpc__
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <stdlib.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 "winternl.h"
|
|
#include "winnt.h"
|
|
#include "wine/library.h"
|
|
#include "wine/exception.h"
|
|
#include "selectors.h"
|
|
#include "stackframe.h"
|
|
#include "global.h"
|
|
#include "miscemu.h"
|
|
#include "syslevel.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(seh);
|
|
|
|
|
|
/***********************************************************************
|
|
* signal context platform-specific definitions
|
|
*/
|
|
|
|
typedef struct ucontext SIGCONTEXT;
|
|
|
|
#define HANDLER_DEF(name) void name( int __signal, struct siginfo *__siginfo, SIGCONTEXT *__context )
|
|
#define HANDLER_CONTEXT (__context)
|
|
|
|
typedef int (*wine_signal_handler)(unsigned int sig);
|
|
|
|
static wine_signal_handler handlers[256];
|
|
|
|
static sigset_t all_sigs;
|
|
|
|
|
|
/***********************************************************************
|
|
* dispatch_signal
|
|
*/
|
|
inline static 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 CX(x,y) context->x = sigcontext->uc_mcontext.regs->y
|
|
#define C(x) CX(Gpr##x,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);
|
|
|
|
CX(Iar,nip);
|
|
CX(Msr,msr);
|
|
CX(Ctr,ctr);
|
|
#undef CX
|
|
/* FIXME: fp regs? */
|
|
|
|
/* FIXME: missing pt_regs ...
|
|
unsigned long link;
|
|
unsigned long xer;
|
|
unsigned long ccr;
|
|
unsigned long mq;
|
|
|
|
unsigned long trap;
|
|
unsigned long dar;
|
|
unsigned long dsisr;
|
|
|
|
*/
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* restore_context
|
|
*
|
|
* Build a sigcontext from the register values.
|
|
*/
|
|
static void restore_context( const CONTEXT *context, SIGCONTEXT *sigcontext )
|
|
{
|
|
#define CX(x,y) sigcontext->uc_mcontext.regs->y = context->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);
|
|
|
|
CX(Iar,nip);
|
|
CX(Msr,msr);
|
|
CX(Ctr,ctr);
|
|
#undef CX
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* save_fpu
|
|
*
|
|
* Set the FPU context from a sigcontext.
|
|
*/
|
|
inline static void save_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
|
|
{
|
|
/* FIXME? */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* restore_fpu
|
|
*
|
|
* Restore the FPU context to a sigcontext.
|
|
*/
|
|
inline static void restore_fpu( CONTEXT *context, const SIGCONTEXT *sigcontext )
|
|
{
|
|
/* FIXME? */
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* get_fpu_code
|
|
*
|
|
* Get the FPU exception code from the FPU status.
|
|
*/
|
|
static inline DWORD get_fpu_code( const CONTEXT *context )
|
|
{
|
|
DWORD status = 0 /* FIXME */;
|
|
|
|
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 */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SIGNAL_Unblock
|
|
*
|
|
* Unblock signals. Called from EXC_RtlRaiseException.
|
|
*/
|
|
void SIGNAL_Unblock( void )
|
|
{
|
|
sigprocmask( SIG_UNBLOCK, &all_sigs, NULL );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* segv_handler
|
|
*
|
|
* Handler for SIGSEGV and related errors.
|
|
*/
|
|
static HANDLER_DEF(segv_handler)
|
|
{
|
|
CONTEXT context;
|
|
EXCEPTION_RECORD rec;
|
|
DWORD page_fault_code = EXCEPTION_ACCESS_VIOLATION;
|
|
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionAddress = (LPVOID)HANDLER_CONTEXT->uc_mcontext.regs->nip;
|
|
rec.NumberParameters = 0;
|
|
switch (__siginfo->si_signo) {
|
|
case SIGSEGV:
|
|
switch ( __siginfo->si_code & 0xffff ) {
|
|
case SEGV_MAPERR:
|
|
case SEGV_ACCERR:
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = 0; /* FIXME ? */
|
|
rec.ExceptionInformation[1] = (DWORD)__siginfo->si_addr;
|
|
if (!(page_fault_code=VIRTUAL_HandleFault(__siginfo->si_addr)))
|
|
return;
|
|
rec.ExceptionCode = page_fault_code;
|
|
break;
|
|
default:FIXME("Unhandled SIGSEGV/%x\n",__siginfo->si_code);
|
|
break;
|
|
}
|
|
break;
|
|
case SIGBUS:
|
|
switch ( __siginfo->si_code & 0xffff ) {
|
|
case BUS_ADRALN:
|
|
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
|
|
break;
|
|
case BUS_ADRERR:
|
|
case BUS_OBJERR:
|
|
/* FIXME: correct for all cases ? */
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = 0; /* FIXME ? */
|
|
rec.ExceptionInformation[1] = (DWORD)__siginfo->si_addr;
|
|
if (!(page_fault_code=VIRTUAL_HandleFault(__siginfo->si_addr)))
|
|
return;
|
|
rec.ExceptionCode = page_fault_code;
|
|
break;
|
|
default:FIXME("Unhandled SIGBUS/%x\n",__siginfo->si_code);
|
|
break;
|
|
}
|
|
break;
|
|
case SIGILL:
|
|
switch ( __siginfo->si_code & 0xffff ) {
|
|
case ILL_ILLOPC: /* illegal opcode */
|
|
case ILL_ILLOPN: /* illegal operand */
|
|
case ILL_ILLADR: /* illegal addressing mode */
|
|
case ILL_ILLTRP: /* illegal trap */
|
|
case ILL_COPROC: /* coprocessor error */
|
|
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
case ILL_PRVOPC: /* privileged opcode */
|
|
case ILL_PRVREG: /* privileged register */
|
|
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
|
|
break;
|
|
case ILL_BADSTK: /* internal stack error */
|
|
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
|
|
break;
|
|
default:FIXME("Unhandled SIGILL/%x\n",__siginfo->si_code);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
EXC_RtlRaiseException( &rec, &context );
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* trap_handler
|
|
*
|
|
* Handler for SIGTRAP.
|
|
*/
|
|
static HANDLER_DEF(trap_handler)
|
|
{
|
|
CONTEXT context;
|
|
EXCEPTION_RECORD rec;
|
|
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)__context->uc_mcontext.regs->nip;
|
|
rec.NumberParameters = 0;
|
|
|
|
/* FIXME: check if we might need to modify PC */
|
|
switch (__siginfo->si_code & 0xffff) {
|
|
case TRAP_BRKPT:
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
break;
|
|
case TRAP_TRACE:
|
|
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
|
|
break;
|
|
}
|
|
EXC_RtlRaiseException( &rec, &context );
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* fpe_handler
|
|
*
|
|
* Handler for SIGFPE.
|
|
*/
|
|
static HANDLER_DEF(fpe_handler)
|
|
{
|
|
CONTEXT context;
|
|
EXCEPTION_RECORD rec;
|
|
|
|
/*save_fpu( &context, HANDLER_CONTEXT );*/
|
|
save_context( &context, HANDLER_CONTEXT );
|
|
|
|
switch ( __siginfo->si_code & 0xffff ) {
|
|
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;
|
|
}
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)__context->uc_mcontext.regs->nip;
|
|
rec.NumberParameters = 0;
|
|
EXC_RtlRaiseException( &rec, &context );
|
|
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;
|
|
EXC_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;
|
|
EXC_RtlRaiseException( &rec, &context ); /* Should never return.. */
|
|
restore_context( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* set_handler
|
|
*
|
|
* Set a signal handler
|
|
*/
|
|
static int set_handler( int sig, int have_sigaltstack, void (*func)() )
|
|
{
|
|
struct sigaction sig_act;
|
|
|
|
sig_act.sa_sigaction = func;
|
|
sigemptyset( &sig_act.sa_mask );
|
|
sigaddset( &sig_act.sa_mask, SIGINT );
|
|
sigaddset( &sig_act.sa_mask, SIGALRM );
|
|
|
|
sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
|
|
|
|
#ifdef SA_ONSTACK
|
|
if (have_sigaltstack) sig_act.sa_flags |= SA_ONSTACK;
|
|
#endif
|
|
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)
|
|
{
|
|
int have_sigaltstack = 0;
|
|
|
|
#ifdef HAVE_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)) have_sigaltstack = 1;
|
|
}
|
|
#endif /* HAVE_SIGALTSTACK */
|
|
|
|
sigfillset( &all_sigs );
|
|
|
|
if (set_handler( SIGINT, have_sigaltstack, (void (*)())int_handler ) == -1) goto error;
|
|
if (set_handler( SIGFPE, have_sigaltstack, (void (*)())fpe_handler ) == -1) goto error;
|
|
if (set_handler( SIGSEGV, have_sigaltstack, (void (*)())segv_handler ) == -1) goto error;
|
|
if (set_handler( SIGILL, have_sigaltstack, (void (*)())segv_handler ) == -1) goto error;
|
|
if (set_handler( SIGABRT, have_sigaltstack, (void (*)())abrt_handler ) == -1) goto error;
|
|
#ifdef SIGBUS
|
|
if (set_handler( SIGBUS, have_sigaltstack, (void (*)())segv_handler ) == -1) goto error;
|
|
#endif
|
|
#ifdef SIGTRAP
|
|
if (set_handler( SIGTRAP, have_sigaltstack, (void (*)())trap_handler ) == -1) goto error;
|
|
#endif
|
|
|
|
return TRUE;
|
|
|
|
error:
|
|
perror("sigaction");
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* SIGNAL_Reset
|
|
*/
|
|
void SIGNAL_Reset(void)
|
|
{
|
|
sigset_t block_set;
|
|
|
|
/* block the async signals */
|
|
sigemptyset( &block_set );
|
|
sigaddset( &block_set, SIGALRM );
|
|
sigaddset( &block_set, SIGIO );
|
|
sigaddset( &block_set, SIGHUP );
|
|
sigaddset( &block_set, SIGUSR2 );
|
|
sigprocmask( SIG_BLOCK, &block_set, NULL );
|
|
|
|
/* restore default handlers */
|
|
signal( SIGINT, SIG_DFL );
|
|
signal( SIGFPE, SIG_DFL );
|
|
signal( SIGSEGV, SIG_DFL );
|
|
signal( SIGILL, SIG_DFL );
|
|
#ifdef SIGBUS
|
|
signal( SIGBUS, SIG_DFL );
|
|
#endif
|
|
#ifdef SIGTRAP
|
|
signal( SIGTRAP, SIG_DFL );
|
|
#endif
|
|
}
|
|
|
|
/**********************************************************************
|
|
* __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__ */
|