signal_sparc.c 28 KB
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/*
 * Sparc signal handling routines
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 *
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 * Copyright 1999 Ulrich Weigand
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 *
 * 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
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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 */

#ifdef __sparc__

#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <signal.h>
#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
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#include <stdarg.h>
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#include <stdio.h>
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#include <sys/ucontext.h>

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#include "ntstatus.h"
#define WIN32_NO_STATUS
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#include "windef.h"
#include "winternl.h"
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#include "winnt.h"

#include "wine/exception.h"
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#include "ntdll_misc.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(seh);
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static pthread_key_t teb_key;

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typedef int (*wine_signal_handler)(unsigned int sig);
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static wine_signal_handler handlers[256];

/***********************************************************************
 *           dispatch_signal
 */
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static inline int dispatch_signal(unsigned int sig)
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{
    if (handlers[sig] == NULL) return 0;
    return handlers[sig](sig);
}


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/*
 * FIXME:  All this works only on Solaris for now
 */

/**********************************************************************
 *		save_context
 */
static void save_context( CONTEXT *context, ucontext_t *ucontext )
{
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    context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;

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    /* 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 */
}


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/**********************************************************************
 *           call_stack_handlers
 *
 * Call the stack handlers chain.
 */
static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
{
    EXCEPTION_POINTERS ptrs;

    FIXME( "not implemented on Sparc\n" );

    /* hack: call unhandled exception filter directly */
    ptrs.ExceptionRecord = rec;
    ptrs.ContextRecord = context;
    unhandled_exception_filter( &ptrs );
    return STATUS_UNHANDLED_EXCEPTION;
}


/*******************************************************************
 *		raise_exception
 *
 * Implementation of NtRaiseException.
 */
static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
{
    NTSTATUS status;

    if (first_chance)
    {
        DWORD c;

        TRACE( "code=%x flags=%x addr=%p ip=%x tid=%04x\n",
               rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
               context->pc, GetCurrentThreadId() );
        for (c = 0; c < rec->NumberParameters; c++)
            TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
        if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
        {
            if (rec->ExceptionInformation[1] >> 16)
                MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
                         rec->ExceptionAddress,
                         (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
            else
                MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
                         rec->ExceptionAddress,
                         (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
        }
        else
        {
            /* FIXME: dump context */
        }

        status = send_debug_event( rec, TRUE, context );
        if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
            return STATUS_SUCCESS;

        if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
            return STATUS_SUCCESS;

        if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
            return status;
    }

    /* last chance exception */

    status = send_debug_event( rec, FALSE, context );
    if (status != DBG_CONTINUE)
    {
        if (rec->ExceptionFlags & EH_STACK_INVALID)
            ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
        else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
            ERR("Process attempted to continue execution after noncontinuable exception.\n");
        else
            ERR("Unhandled exception code %x flags %x addr %p\n",
                rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
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        NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
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    }
    return STATUS_SUCCESS;
}


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/***********************************************************************
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 *		RtlCaptureContext (NTDLL.@)
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 */
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void WINAPI RtlCaptureContext( CONTEXT *context )
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{
    FIXME("not implemented\n");
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    memset( context, 0, sizeof(*context) );
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}


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/***********************************************************************
 *           set_cpu_context
 *
 * Set the new CPU context.
 */
void set_cpu_context( const CONTEXT *context )
{
    FIXME("not implemented\n");
}


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/***********************************************************************
 *           copy_context
 *
 * Copy a register context according to the flags.
 */
void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
{
    flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
    if (flags & CONTEXT_CONTROL)
    {
        to->psr = from->psr;
        to->pc  = from->pc;
        to->npc = from->npc;
        to->y   = from->y;
        to->wim = from->wim;
        to->tbr = from->tbr;
    }
    if (flags & CONTEXT_INTEGER)
    {
        to->g0 = from->g0;
        to->g1 = from->g1;
        to->g2 = from->g2;
        to->g3 = from->g3;
        to->g4 = from->g4;
        to->g5 = from->g5;
        to->g6 = from->g6;
        to->g7 = from->g7;
        to->o0 = from->o0;
        to->o1 = from->o1;
        to->o2 = from->o2;
        to->o3 = from->o3;
        to->o4 = from->o4;
        to->o5 = from->o5;
        to->o6 = from->o6;
        to->o7 = from->o7;
        to->l0 = from->l0;
        to->l1 = from->l1;
        to->l2 = from->l2;
        to->l3 = from->l3;
        to->l4 = from->l4;
        to->l5 = from->l5;
        to->l6 = from->l6;
        to->l7 = from->l7;
        to->i0 = from->i0;
        to->i1 = from->i1;
        to->i2 = from->i2;
        to->i3 = from->i3;
        to->i4 = from->i4;
        to->i5 = from->i5;
        to->i6 = from->i6;
        to->i7 = from->i7;
    }
    if (flags & CONTEXT_FLOATING_POINT)
    {
        /* FIXME */
    }
}


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/***********************************************************************
 *           context_to_server
 *
 * Convert a register context to the server format.
 */
NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
{
    DWORD flags = from->ContextFlags & ~CONTEXT_SPARC;  /* get rid of CPU id */

    memset( to, 0, sizeof(*to) );
    to->cpu = CPU_SPARC;

    if (flags & CONTEXT_CONTROL)
    {
        to->flags |= SERVER_CTX_CONTROL;
        to->ctl.sparc_regs.psr = from->psr;
        to->ctl.sparc_regs.pc  = from->pc;
        to->ctl.sparc_regs.npc = from->npc;
        to->ctl.sparc_regs.y   = from->y;
        to->ctl.sparc_regs.wim = from->wim;
        to->ctl.sparc_regs.tbr = from->tbr;
    }
    if (flags & CONTEXT_INTEGER)
    {
        to->flags |= SERVER_CTX_INTEGER;
        to->integer.sparc_regs.g[0] = from->g0;
        to->integer.sparc_regs.g[1] = from->g1;
        to->integer.sparc_regs.g[2] = from->g2;
        to->integer.sparc_regs.g[3] = from->g3;
        to->integer.sparc_regs.g[4] = from->g4;
        to->integer.sparc_regs.g[5] = from->g5;
        to->integer.sparc_regs.g[6] = from->g6;
        to->integer.sparc_regs.g[7] = from->g7;
        to->integer.sparc_regs.o[0] = from->o0;
        to->integer.sparc_regs.o[1] = from->o1;
        to->integer.sparc_regs.o[2] = from->o2;
        to->integer.sparc_regs.o[3] = from->o3;
        to->integer.sparc_regs.o[4] = from->o4;
        to->integer.sparc_regs.o[5] = from->o5;
        to->integer.sparc_regs.o[6] = from->o6;
        to->integer.sparc_regs.o[7] = from->o7;
        to->integer.sparc_regs.l[0] = from->l0;
        to->integer.sparc_regs.l[1] = from->l1;
        to->integer.sparc_regs.l[2] = from->l2;
        to->integer.sparc_regs.l[3] = from->l3;
        to->integer.sparc_regs.l[4] = from->l4;
        to->integer.sparc_regs.l[5] = from->l5;
        to->integer.sparc_regs.l[6] = from->l6;
        to->integer.sparc_regs.l[7] = from->l7;
        to->integer.sparc_regs.i[0] = from->i0;
        to->integer.sparc_regs.i[1] = from->i1;
        to->integer.sparc_regs.i[2] = from->i2;
        to->integer.sparc_regs.i[3] = from->i3;
        to->integer.sparc_regs.i[4] = from->i4;
        to->integer.sparc_regs.i[5] = from->i5;
        to->integer.sparc_regs.i[6] = from->i6;
        to->integer.sparc_regs.i[7] = from->i7;
    }
    if (flags & CONTEXT_FLOATING_POINT)
    {
        /* FIXME */
    }
    return STATUS_SUCCESS;
}


/***********************************************************************
 *           context_from_server
 *
 * Convert a register context from the server format.
 */
NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
{
    if (from->cpu != CPU_SPARC) return STATUS_INVALID_PARAMETER;

    to->ContextFlags = CONTEXT_SPARC;
    if (from->flags & SERVER_CTX_CONTROL)
    {
        to->ContextFlags |= CONTEXT_CONTROL;
        to->psr = from->ctl.sparc_regs.psr;
        to->pc  = from->ctl.sparc_regs.pc;
        to->npc = from->ctl.sparc_regs.npc;
        to->y   = from->ctl.sparc_regs.y;
        to->wim = from->ctl.sparc_regs.wim;
        to->tbr = from->ctl.sparc_regs.tbr;
    }
    if (from->flags & SERVER_CTX_INTEGER)
    {
        to->ContextFlags |= CONTEXT_INTEGER;
        to->g0 = from->integer.sparc_regs.g[0];
        to->g1 = from->integer.sparc_regs.g[1];
        to->g2 = from->integer.sparc_regs.g[2];
        to->g3 = from->integer.sparc_regs.g[3];
        to->g4 = from->integer.sparc_regs.g[4];
        to->g5 = from->integer.sparc_regs.g[5];
        to->g6 = from->integer.sparc_regs.g[6];
        to->g7 = from->integer.sparc_regs.g[7];
        to->o0 = from->integer.sparc_regs.o[0];
        to->o1 = from->integer.sparc_regs.o[1];
        to->o2 = from->integer.sparc_regs.o[2];
        to->o3 = from->integer.sparc_regs.o[3];
        to->o4 = from->integer.sparc_regs.o[4];
        to->o5 = from->integer.sparc_regs.o[5];
        to->o6 = from->integer.sparc_regs.o[6];
        to->o7 = from->integer.sparc_regs.o[7];
        to->l0 = from->integer.sparc_regs.l[0];
        to->l1 = from->integer.sparc_regs.l[1];
        to->l2 = from->integer.sparc_regs.l[2];
        to->l3 = from->integer.sparc_regs.l[3];
        to->l4 = from->integer.sparc_regs.l[4];
        to->l5 = from->integer.sparc_regs.l[5];
        to->l6 = from->integer.sparc_regs.l[6];
        to->l7 = from->integer.sparc_regs.l[7];
        to->i0 = from->integer.sparc_regs.i[0];
        to->i1 = from->integer.sparc_regs.i[1];
        to->i2 = from->integer.sparc_regs.i[2];
        to->i3 = from->integer.sparc_regs.i[3];
        to->i4 = from->integer.sparc_regs.i[4];
        to->i5 = from->integer.sparc_regs.i[5];
        to->i6 = from->integer.sparc_regs.i[6];
        to->i7 = from->integer.sparc_regs.i[7];
    }
    if (from->flags & SERVER_CTX_FLOATING_POINT)
    {
        /* FIXME */
    }
    return STATUS_SUCCESS;
}


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/**********************************************************************
 *		segv_handler
 *
 * Handler for SIGSEGV.
 */
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static void segv_handler( int signal, siginfo_t *info, void *ucontext )
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{
    EXCEPTION_RECORD rec;
    CONTEXT context;
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    NTSTATUS status;
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    rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;

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    /* we want the page-fault case to be fast */
    if ( info->si_code == SEGV_ACCERR )
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        if (!(rec.ExceptionCode = virtual_handle_fault( info->si_addr, 0 ))) return;
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    save_context( &context, ucontext );
    rec.ExceptionRecord  = NULL;
    rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
    rec.ExceptionAddress = (LPVOID)context.pc;
    rec.NumberParameters = 2;
    rec.ExceptionInformation[0] = 0;  /* FIXME: read/write access ? */
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    rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
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    status = raise_exception( &rec, &context, TRUE );
    if (status) raise_status( status, &rec );
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    restore_context( &context, ucontext );
}

/**********************************************************************
 *		bus_handler
 *
 * Handler for SIGBUS.
 */
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static void bus_handler( int signal, siginfo_t *info, void *ucontext )
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{
    EXCEPTION_RECORD rec;
    CONTEXT context;
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    NTSTATUS status;
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    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;
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    status = raise_exception( &rec, &context, TRUE );
    if (status) raise_status( status, &rec );
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    restore_context( &context, ucontext );
}

/**********************************************************************
 *		ill_handler
 *
 * Handler for SIGILL.
 */
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static void ill_handler( int signal, siginfo_t *info, void *ucontext )
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{
    EXCEPTION_RECORD rec;
    CONTEXT context;
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    NTSTATUS status;
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    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;
    }
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    save_context( &context, ucontext );
    rec.ExceptionRecord  = NULL;
    rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
    rec.ExceptionAddress = (LPVOID)context.pc;
    rec.NumberParameters = 0;
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    status = raise_exception( &rec, &context, TRUE );
    if (status) raise_status( status, &rec );
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    restore_context( &context, ucontext );
}


/**********************************************************************
 *		trap_handler
 *
 * Handler for SIGTRAP.
 */
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static void trap_handler( int signal, siginfo_t *info, void *ucontext )
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{
    EXCEPTION_RECORD rec;
    CONTEXT context;
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    NTSTATUS status;
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    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;
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    status = raise_exception( &rec, &context, TRUE );
    if (status) raise_status( status, &rec );
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    restore_context( &context, ucontext );
}


/**********************************************************************
 *		fpe_handler
 *
 * Handler for SIGFPE.
 */
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static void fpe_handler( int signal, siginfo_t *info, void *ucontext )
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{
    EXCEPTION_RECORD rec;
    CONTEXT context;
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    NTSTATUS status;
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    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;
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    status = raise_exception( &rec, &context, TRUE );
    if (status) raise_status( status, &rec );
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    restore_context( &context, ucontext );
    restore_fpu( &context, ucontext );
}


/**********************************************************************
 *		int_handler
 *
 * Handler for SIGINT.
 */
636
static void int_handler( int signal, siginfo_t *info, void *ucontext )
637
{
638
    if (!dispatch_signal(SIGINT))
639 640 641
    {
        EXCEPTION_RECORD rec;
        CONTEXT context;
642
        NTSTATUS status;
643 644 645 646 647 648 649

        save_context( &context, ucontext );
        rec.ExceptionCode    = CONTROL_C_EXIT;
        rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
        rec.ExceptionRecord  = NULL;
        rec.ExceptionAddress = (LPVOID)context.pc;
        rec.NumberParameters = 0;
650 651
        status = raise_exception( &rec, &context, TRUE );
        if (status) raise_status( status, &rec );
652 653
        restore_context( &context, ucontext );
    }
654 655
}

656 657 658 659 660
/**********************************************************************
 *		abrt_handler
 *
 * Handler for SIGABRT.
 */
661
static void abrt_handler( int signal, struct siginfo *info, void *ucontext )
662 663 664
{
    EXCEPTION_RECORD rec;
    CONTEXT context;
665
    NTSTATUS status;
666

667
    save_context( &context, ucontext );
668 669 670
    rec.ExceptionCode    = EXCEPTION_WINE_ASSERTION;
    rec.ExceptionFlags   = EH_NONCONTINUABLE;
    rec.ExceptionRecord  = NULL;
671
    rec.ExceptionAddress = (LPVOID)context.pc;
672
    rec.NumberParameters = 0;
673 674
    status = raise_exception( &rec, &context, TRUE );
    if (status) raise_status( status, &rec );
675
    restore_context( &context, ucontext );
676
}
677

678

679
/**********************************************************************
680
 *		quit_handler
681
 *
682
 * Handler for SIGQUIT.
683
 */
684
static void quit_handler( int signal, struct siginfo *info, void *ucontext )
685
{
686
    abort_thread(0);
687 688 689
}


690 691 692 693 694
/**********************************************************************
 *		usr1_handler
 *
 * Handler for SIGUSR1, used to signal a thread that it got suspended.
 */
695
static void usr1_handler( int signal, struct siginfo *info, void *ucontext )
696
{
697
    CONTEXT context;
698

699
    save_context( &context, ucontext );
700
    wait_suspend( &context );
701
    restore_context( &context, ucontext );
702 703 704
}


705 706 707
/***********************************************************************
 *           __wine_set_signal_handler   (NTDLL.@)
 */
708
int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
709 710 711 712 713 714 715 716
{
    if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
    if (handlers[sig] != NULL) return -2;
    handlers[sig] = wsh;
    return 0;
}


717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762
/**********************************************************************
 *		signal_alloc_thread
 */
NTSTATUS signal_alloc_thread( TEB **teb )
{
    static size_t sigstack_zero_bits;
    SIZE_T size;
    NTSTATUS status;

    if (!sigstack_zero_bits)
    {
        size_t min_size = getpagesize();  /* this is just for the TEB, we don't use a signal stack yet */
        /* find the first power of two not smaller than min_size */
        while ((1u << sigstack_zero_bits) < min_size) sigstack_zero_bits++;
        assert( sizeof(TEB) <= min_size );
    }

    size = 1 << sigstack_zero_bits;
    *teb = NULL;
    if (!(status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb, sigstack_zero_bits,
                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
    {
        (*teb)->Tib.Self = &(*teb)->Tib;
        (*teb)->Tib.ExceptionList = (void *)~0UL;
    }
    return status;
}


/**********************************************************************
 *		signal_free_thread
 */
void signal_free_thread( TEB *teb )
{
    SIZE_T size;

    if (teb->DeallocationStack)
    {
        size = 0;
        NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
    }
    size = 0;
    NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
}


763
/**********************************************************************
764
 *		signal_init_thread
765
 */
766
void signal_init_thread( TEB *teb )
767
{
768 769 770 771 772 773 774 775
    static int init_done;

    if (!init_done)
    {
        pthread_key_create( &teb_key, NULL );
        init_done = 1;
    }
    pthread_setspecific( teb_key, teb );
776 777
}

778

779 780 781 782
/**********************************************************************
 *		signal_init_process
 */
void signal_init_process(void)
783
{
784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801
    struct sigaction sig_act;

    sig_act.sa_mask = server_block_set;
    sig_act.sa_flags = SA_RESTART | SA_SIGINFO;

    sig_act.sa_sigaction = int_handler;
    if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
    sig_act.sa_sigaction = fpe_handler;
    if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
    sig_act.sa_sigaction = abrt_handler;
    if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
    sig_act.sa_sigaction = quit_handler;
    if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
    sig_act.sa_sigaction = usr1_handler;
    if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;

    sig_act.sa_sigaction = segv_handler;
    if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
802
    sig_act.sa_sigaction = ill_handler;
803 804
    if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
#ifdef SIGBUS
805
    sig_act.sa_sigaction = bus_handler;
806 807 808 809 810 811 812 813
    if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
#endif

#ifdef SIGTRAP
    sig_act.sa_sigaction = trap_handler;
    if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
#endif

814
#ifdef __sun__
815 816 817 818 819
    /* '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 */
820
    __asm__("ta 6"); /* 6 == ST_FIX_ALIGN defined in sys/trap.h */
821
#endif
822

823
    return;
824 825
 error:
    perror("sigaction");
826
    exit(1);
827 828
}

829

830 831 832 833 834 835 836 837
/**********************************************************************
 *		__wine_enter_vm86
 */
void __wine_enter_vm86( CONTEXT *context )
{
    MESSAGE("vm86 mode not supported on this platform\n");
}

838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855
/***********************************************************************
 *            RtlUnwind  (NTDLL.@)
 */
void WINAPI RtlUnwind( PVOID pEndFrame, PVOID targetIp, PEXCEPTION_RECORD pRecord, PVOID retval )
{
    FIXME( "Not implemented on Sparc\n" );
}

/*******************************************************************
 *		NtRaiseException (NTDLL.@)
 */
NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
{
    NTSTATUS status = raise_exception( rec, context, first_chance );
    if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
    return status;
}

856 857 858 859 860 861 862 863 864
/***********************************************************************
 *		RtlRaiseException (NTDLL.@)
 */
void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
{
    CONTEXT context;
    NTSTATUS status;

    RtlCaptureContext( &context );
865
    rec->ExceptionAddress = (void *)context.pc;
866 867 868 869
    status = raise_exception( rec, &context, TRUE );
    if (status) raise_status( status, rec );
}

870 871 872 873 874 875 876 877 878
/*************************************************************************
 *		RtlCaptureStackBackTrace (NTDLL.@)
 */
USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
{
    FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
    return 0;
}

879 880 881 882 883 884 885
/***********************************************************************
 *           call_thread_entry_point
 */
void call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg )
{
    __TRY
    {
886
        exit_thread( entry( arg ));
887 888 889 890 891 892 893 894 895
    }
    __EXCEPT(unhandled_exception_filter)
    {
        NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
    }
    __ENDTRY
    abort();  /* should not be reached */
}

896 897 898 899 900 901 902 903
/***********************************************************************
 *           RtlExitUserThread  (NTDLL.@)
 */
void WINAPI RtlExitUserThread( ULONG status )
{
    exit_thread( status );
}

904 905 906 907 908 909 910 911
/***********************************************************************
 *           abort_thread
 */
void abort_thread( int status )
{
    terminate_thread( status );
}

912
/**********************************************************************
913
 *              DbgBreakPoint   (NTDLL.@)
914 915 916
 */
void WINAPI DbgBreakPoint(void)
{
917
     kill(getpid(), SIGTRAP);
918 919 920
}

/**********************************************************************
921
 *              DbgUserBreakPoint   (NTDLL.@)
922 923 924
 */
void WINAPI DbgUserBreakPoint(void)
{
925
     kill(getpid(), SIGTRAP);
926 927
}

928 929 930 931 932 933 934 935
/**********************************************************************
 *           NtCurrentTeb   (NTDLL.@)
 */
TEB * WINAPI NtCurrentTeb(void)
{
    return pthread_getspecific( teb_key );
}

936
#endif  /* __sparc__ */