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wine/dlls/ntdll/signal_sparc.c
Alexandre Julliard c388c58b9f ntdll: Make the server signal mask global.
2007-01-18 12:20:56 +01:00

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/*
* Sparc signal handling routines
*
* Copyright 1999 Ulrich Weigand
*
* 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 __sparc__
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <sys/ucontext.h>
#include "windef.h"
#include "winternl.h"
#include "winnt.h"
#include "wine/exception.h"
#include "ntdll_misc.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(seh);
#define HANDLER_DEF(name) void name( int __signal, struct siginfo *__siginfo, ucontext_t *__context )
#define HANDLER_CONTEXT (__context)
typedef int (*wine_signal_handler)(unsigned int sig);
static wine_signal_handler handlers[256];
/***********************************************************************
* dispatch_signal
*/
inline static int dispatch_signal(unsigned int sig)
{
if (handlers[sig] == NULL) return 0;
return handlers[sig](sig);
}
/*
* FIXME: All this works only on Solaris for now
*/
/**********************************************************************
* save_context
*/
static void save_context( CONTEXT *context, ucontext_t *ucontext )
{
/* Special registers */
context->psr = ucontext->uc_mcontext.gregs[REG_PSR];
context->pc = ucontext->uc_mcontext.gregs[REG_PC];
context->npc = ucontext->uc_mcontext.gregs[REG_nPC];
context->y = ucontext->uc_mcontext.gregs[REG_Y];
context->wim = 0; /* FIXME */
context->tbr = 0; /* FIXME */
/* Global registers */
context->g0 = 0; /* always */
context->g1 = ucontext->uc_mcontext.gregs[REG_G1];
context->g2 = ucontext->uc_mcontext.gregs[REG_G2];
context->g3 = ucontext->uc_mcontext.gregs[REG_G3];
context->g4 = ucontext->uc_mcontext.gregs[REG_G4];
context->g5 = ucontext->uc_mcontext.gregs[REG_G5];
context->g6 = ucontext->uc_mcontext.gregs[REG_G6];
context->g7 = ucontext->uc_mcontext.gregs[REG_G7];
/* Current 'out' registers */
context->o0 = ucontext->uc_mcontext.gregs[REG_O0];
context->o1 = ucontext->uc_mcontext.gregs[REG_O1];
context->o2 = ucontext->uc_mcontext.gregs[REG_O2];
context->o3 = ucontext->uc_mcontext.gregs[REG_O3];
context->o4 = ucontext->uc_mcontext.gregs[REG_O4];
context->o5 = ucontext->uc_mcontext.gregs[REG_O5];
context->o6 = ucontext->uc_mcontext.gregs[REG_O6];
context->o7 = ucontext->uc_mcontext.gregs[REG_O7];
/* FIXME: what if the current register window isn't saved? */
if ( ucontext->uc_mcontext.gwins && ucontext->uc_mcontext.gwins->wbcnt > 0 )
{
/* Current 'local' registers from first register window */
context->l0 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[0];
context->l1 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[1];
context->l2 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[2];
context->l3 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[3];
context->l4 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[4];
context->l5 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[5];
context->l6 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[6];
context->l7 = ucontext->uc_mcontext.gwins->wbuf[0].rw_local[7];
/* Current 'in' registers from first register window */
context->i0 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[0];
context->i1 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[1];
context->i2 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[2];
context->i3 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[3];
context->i4 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[4];
context->i5 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[5];
context->i6 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[6];
context->i7 = ucontext->uc_mcontext.gwins->wbuf[0].rw_in[7];
}
}
/**********************************************************************
* restore_context
*/
static void restore_context( CONTEXT *context, ucontext_t *ucontext )
{
/* FIXME */
}
/**********************************************************************
* save_fpu
*/
static void save_fpu( CONTEXT *context, ucontext_t *ucontext )
{
/* FIXME */
}
/**********************************************************************
* restore_fpu
*/
static void restore_fpu( CONTEXT *context, ucontext_t *ucontext )
{
/* FIXME */
}
/***********************************************************************
* 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");
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV.
*/
static void segv_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
/* we want the page-fault case to be fast */
if ( info->si_code == SEGV_ACCERR )
if (VIRTUAL_HandleFault( (LPVOID)info->si_addr )) return;
save_context( &context, ucontext );
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionAddress = (LPVOID)context.pc;
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = 0; /* FIXME: read/write access ? */
rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
__regs_RtlRaiseException( &rec, &context );
restore_context( &context, ucontext );
}
/**********************************************************************
* bus_handler
*
* Handler for SIGBUS.
*/
static void bus_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
save_context( &context, ucontext );
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionAddress = (LPVOID)context.pc;
rec.NumberParameters = 0;
if ( info->si_code == BUS_ADRALN )
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
else
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
__regs_RtlRaiseException( &rec, &context );
restore_context( &context, ucontext );
}
/**********************************************************************
* ill_handler
*
* Handler for SIGILL.
*/
static void ill_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
switch ( info->si_code )
{
default:
case ILL_ILLOPC:
case ILL_ILLOPN:
case ILL_ILLADR:
case ILL_ILLTRP:
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case ILL_PRVOPC:
case ILL_PRVREG:
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
break;
case ILL_BADSTK:
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
}
save_context( &context, ucontext );
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionAddress = (LPVOID)context.pc;
rec.NumberParameters = 0;
__regs_RtlRaiseException( &rec, &context );
restore_context( &context, ucontext );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
switch ( info->si_code )
{
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
break;
}
save_context( &context, ucontext );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.pc;
rec.NumberParameters = 0;
__regs_RtlRaiseException( &rec, &context );
restore_context( &context, ucontext );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
switch ( info->si_code )
{
case FPE_FLTSUB:
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case FPE_INTDIV:
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
case FPE_INTOVF:
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case FPE_FLTDIV:
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
case FPE_FLTOVF:
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
case FPE_FLTUND:
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
case FPE_FLTRES:
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
case FPE_FLTINV:
default:
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
save_context( &context, ucontext );
save_fpu( &context, ucontext );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.pc;
rec.NumberParameters = 0;
__regs_RtlRaiseException( &rec, &context );
restore_context( &context, ucontext );
restore_fpu( &context, ucontext );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
{
if (!dispatch_signal(SIGINT))
{
EXCEPTION_RECORD rec;
CONTEXT context;
save_context( &context, ucontext );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.pc;
rec.NumberParameters = 0;
__regs_RtlRaiseException( &rec, &context );
restore_context( &context, ucontext );
}
}
/**********************************************************************
* 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.pc;
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_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 (*)())ill_handler ) == -1) goto error;
if (set_handler( SIGBUS, (void (*)())bus_handler ) == -1) goto error;
if (set_handler( SIGTRAP, (void (*)())trap_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;
/* 'ta 6' tells the kernel to synthesize any unaligned accesses this
process makes, instead of just signalling an error and terminating
the process. wine-devel did not reach a conclusion on whether
this is correct, because that is what x86 does, or it is harmful
because it could obscure problems in user code */
asm("ta 6"); /* 6 == ST_FIX_ALIGN defined in sys/trap.h */
return TRUE;
error:
perror("sigaction");
return FALSE;
}
/**********************************************************************
* __wine_enter_vm86
*/
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 /* __sparc__ */
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