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ntdll: Don't run exception handlers on the signal stack on ARM64. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2019-08-13 15:41:25 +02:00
parent 94a98cf5a2
commit 3027c266fc
1 changed files with 30 additions and 63 deletions
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93
dlls/ntdll/signal_arm64.c
View File

@ -470,6 +470,7 @@ static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func fun
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
save_fpu( &stack->context, sigcontext );
/* now modify the sigcontext to return to the raise function */
SP_sig(sigcontext) = (ULONG_PTR)stack;
@ -499,11 +500,20 @@ static void WINAPI raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context
break;
}
status = NtRaiseException( rec, context, TRUE );
if (status) raise_status( status, rec );
raise_status( status, rec );
done:
set_cpu_context( context );
}
/**********************************************************************
* raise_generic_exception
*/
static void WINAPI raise_generic_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
{
NTSTATUS status = NtRaiseException( rec, context, TRUE );
raise_status( status, rec );
}
/**********************************************************************
* call_stack_handlers
*
@ -693,29 +703,19 @@ static void segv_handler( int signal, siginfo_t *info, void *ucontext )
*/
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
ucontext_t *context = ucontext;
EXCEPTION_RECORD *rec = setup_exception( context, raise_generic_exception );
switch ( info->si_code )
switch (info->si_code)
{
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
rec->ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
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 );
}
/**********************************************************************
@ -725,66 +725,52 @@ static void trap_handler( int signal, siginfo_t *info, void *ucontext )
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_fpu( &context, sigcontext );
save_context( &context, sigcontext );
EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
rec->ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
rec->ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
rec->ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
rec->ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
rec->ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
rec->ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
rec->ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
rec->ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
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, sigcontext );
restore_fpu( &context, sigcontext );
}
/**********************************************************************
@ -796,19 +782,9 @@ static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
if (!dispatch_signal(SIGINT))
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
save_context( &context, sigcontext );
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, sigcontext );
rec->ExceptionCode = CONTROL_C_EXIT;
}
}
@ -820,19 +796,10 @@ static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
save_context( &context, sigcontext );
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, sigcontext );
rec->ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec->ExceptionFlags = EH_NONCONTINUABLE;
}