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ntdll: Use separate handlers for SIGSEGV/SIGILL/SIGBUS on ARM64. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-07-15 10:52:52 +02:00
parent 7b79532448
commit 82dc024a35
1 changed files with 42 additions and 28 deletions
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70
dlls/ntdll/unix/signal_arm64.c
View File

@ -69,7 +69,9 @@
#include "unix_private.h"
#include "wine/debug.h"
#ifdef HAVE_LIBUNWIND
WINE_DEFAULT_DEBUG_CHANNEL(seh);
#endif
/***********************************************************************
* signal context platform-specific definitions
@ -596,49 +598,59 @@ void WINAPI call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *cont
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
* Handler for SIGSEGV.
*/
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { 0 };
ucontext_t *context = ucontext;
ucontext_t *context = sigcontext;
switch(signal)
{
case SIGILL: /* Invalid opcode exception */
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case SIGSEGV: /* Segmentation fault */
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
rec.ExceptionCode = virtual_handle_fault( info->si_addr, rec.ExceptionInformation[0],
(void *)SP_sig(context) );
if (!rec.ExceptionCode) return;
break;
case SIGBUS: /* Alignment check exception */
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR("Got unexpected signal %i\n", signal);
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
rec.ExceptionCode = virtual_handle_fault( siginfo->si_addr, rec.ExceptionInformation[0],
(void *)SP_sig(context) );
if (!rec.ExceptionCode) return;
setup_exception( context, &rec );
}
/**********************************************************************
* ill_handler
*
* Handler for SIGILL.
*/
static void ill_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { EXCEPTION_ILLEGAL_INSTRUCTION };
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* bus_handler
*
* Handler for SIGBUS.
*/
static void bus_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { EXCEPTION_DATATYPE_MISALIGNMENT };
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { 0 };
ucontext_t *context = ucontext;
switch (info->si_code)
switch (siginfo->si_code)
{
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
@ -648,7 +660,7 @@ static void trap_handler( int signal, siginfo_t *info, void *ucontext )
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
break;
}
setup_exception( context, &rec );
setup_exception( sigcontext, &rec );
}
@ -859,7 +871,9 @@ void signal_init_process(void)
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = ill_handler;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = bus_handler;
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
return;