Sweden-Number/dlls/ntdll/signal_sparc.c

757 lines
22 KiB
C

/*
* 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 "ntstatus.h"
#define WIN32_NO_STATUS
#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);
static pthread_key_t teb_key;
#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
*/
static inline 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 */
}
/***********************************************************************
* RtlCaptureContext (NTDLL.@)
*/
void WINAPI RtlCaptureContext( CONTEXT *context )
{
FIXME("not implemented\n");
memset( context, 0, sizeof(*context) );
}
/***********************************************************************
* set_cpu_context
*
* Set the new CPU context.
*/
void set_cpu_context( const CONTEXT *context )
{
FIXME("not implemented\n");
}
/***********************************************************************
* 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 */
}
}
/***********************************************************************
* 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;
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV.
*/
static void segv_handler( int signal, siginfo_t *info, ucontext_t *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
/* we want the page-fault case to be fast */
if ( info->si_code == SEGV_ACCERR )
if (!(rec.ExceptionCode = virtual_handle_fault( info->si_addr, 0 ))) return;
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 ? */
rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
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;
NTSTATUS status;
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;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
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;
NTSTATUS status;
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;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
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;
NTSTATUS status;
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;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
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;
NTSTATUS status;
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;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
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;
NTSTATUS status;
save_context( &context, ucontext );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.pc;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, ucontext );
}
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static HANDLER_DEF(abrt_handler)
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
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;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, HANDLER_CONTEXT );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static HANDLER_DEF(quit_handler)
{
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 CDECL __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_thread
*/
void signal_init_thread( TEB *teb )
{
static int init_done;
if (!init_done)
{
pthread_key_create( &teb_key, NULL );
init_done = 1;
}
pthread_setspecific( teb_key, teb );
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(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( SIGQUIT, (void (*)())quit_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;
error:
perror("sigaction");
exit(1);
}
/**********************************************************************
* __wine_enter_vm86
*/
void __wine_enter_vm86( CONTEXT *context )
{
MESSAGE("vm86 mode not supported on this platform\n");
}
/***********************************************************************
* RtlRaiseException (NTDLL.@)
*/
void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
{
CONTEXT context;
NTSTATUS status;
RtlCaptureContext( &context );
rec->ExceptionAddress = (void *)context.pc;
status = raise_exception( rec, &context, TRUE );
if (status) raise_status( status, rec );
}
/**********************************************************************
* DbgBreakPoint (NTDLL.@)
*/
void WINAPI DbgBreakPoint(void)
{
kill(getpid(), SIGTRAP);
}
/**********************************************************************
* DbgUserBreakPoint (NTDLL.@)
*/
void WINAPI DbgUserBreakPoint(void)
{
kill(getpid(), SIGTRAP);
}
/**********************************************************************
* NtCurrentTeb (NTDLL.@)
*/
TEB * WINAPI NtCurrentTeb(void)
{
return pthread_getspecific( teb_key );
}
#endif /* __sparc__ */