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ntdll: Send debug event before pushing exception data on ARM64. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-07-15 10:34:56 +02:00
parent adb4e74b47
commit ae15a4ca5a
1 changed files with 38 additions and 53 deletions
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91
dlls/ntdll/unix/signal_arm64.c
View File

@ -114,17 +114,6 @@ static DWORD64 get_fault_esr( ucontext_t *sigcontext )
static pthread_key_t teb_key;
typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
/* stack layout when calling an exception raise function */
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
void *redzone[3];
};
C_ASSERT( !(sizeof(struct stack_layout) % 16) );
struct arm64_thread_data
{
void *exit_frame; /* exit frame pointer */
@ -534,26 +523,7 @@ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
}
/***********************************************************************
* setup_exception
*
* Setup the exception record and context on the thread stack.
*/
static struct stack_layout *setup_exception( ucontext_t *sigcontext, EXCEPTION_RECORD *rec )
{
void *stack_ptr = (void *)(SP_sig(sigcontext) & ~15);
struct stack_layout *stack;
rec->ExceptionAddress = (void *)PC_sig(sigcontext);
stack = virtual_setup_exception( stack_ptr, sizeof(*stack), rec );
stack->rec = *rec;
save_context( &stack->context, sigcontext );
save_fpu( &stack->context, sigcontext );
return stack;
}
extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func, void *sp );
extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, void *dispatcher, void *sp );
__ASM_GLOBAL_FUNC( raise_func_trampoline,
__ASM_CFI(".cfi_signal_frame\n\t")
"stp x29, x30, [sp, #-0x20]!\n\t"
@ -572,26 +542,48 @@ __ASM_GLOBAL_FUNC( raise_func_trampoline,
"brk #1")
/***********************************************************************
* setup_raise_exception
* setup_exception
*
* Modify the signal context to call the exception raise function.
*/
static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout *stack )
static void setup_exception( ucontext_t *sigcontext, EXCEPTION_RECORD *rec )
{
NTSTATUS status = send_debug_event( &stack->rec, &stack->context, TRUE );
struct
{
CONTEXT context;
EXCEPTION_RECORD rec;
void *redzone[3];
} *stack;
void *stack_ptr = (void *)(SP_sig(sigcontext) & ~15);
CONTEXT context;
NTSTATUS status;
rec->ExceptionAddress = (void *)PC_sig(sigcontext);
save_context( &context, sigcontext );
save_fpu( &context, sigcontext );
status = send_debug_event( rec, &context, TRUE );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
{
restore_context( &stack->context, sigcontext );
restore_context( &context, sigcontext );
return;
}
/* fix up instruction pointer in context for EXCEPTION_BREAKPOINT */
if (rec->ExceptionCode == EXCEPTION_BREAKPOINT) context.Pc += 4;
stack = virtual_setup_exception( stack_ptr, (sizeof(*stack) + 15) & ~15, rec );
stack->rec = *rec;
stack->context = context;
REGn_sig(3, sigcontext) = SP_sig(sigcontext); /* original stack pointer, fourth arg for raise_func_trampoline */
SP_sig(sigcontext) = (ULONG_PTR)stack;
LR_sig(sigcontext) = PC_sig(sigcontext);
PC_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline; /* raise_generic_exception; */
REGn_sig(0, sigcontext) = (ULONG_PTR)&stack->rec; /* first arg for raise_generic_exception */
REGn_sig(1, sigcontext) = (ULONG_PTR)&stack->context; /* second arg for raise_generic_exception */
REGn_sig(2, sigcontext) = (ULONG_PTR)pKiUserExceptionDispatcher; /* third arg for raise_func_trampoline */
PC_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline;
REGn_sig(0, sigcontext) = (ULONG_PTR)&stack->rec; /* first arg for KiUserExceptionDispatcher */
REGn_sig(1, sigcontext) = (ULONG_PTR)&stack->context; /* second arg for KiUserExceptionDispatcher */
REGn_sig(2, sigcontext) = (ULONG_PTR)pKiUserExceptionDispatcher; /* dispatcher arg for raise_func_trampoline */
REGn_sig(18, sigcontext) = (ULONG_PTR)NtCurrentTeb();
}
@ -609,7 +601,6 @@ void WINAPI call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *cont
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD rec = { 0 };
struct stack_layout *stack;
ucontext_t *context = ucontext;
switch(signal)
@ -633,8 +624,7 @@ static void segv_handler( int signal, siginfo_t *info, void *ucontext )
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
stack = setup_exception( context, &rec );
setup_raise_exception( context, stack );
setup_exception( context, &rec );
}
@ -647,7 +637,6 @@ static void trap_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD rec = { 0 };
ucontext_t *context = ucontext;
struct stack_layout *stack;
switch (info->si_code)
{
@ -657,11 +646,9 @@ static void trap_handler( int signal, siginfo_t *info, void *ucontext )
case TRAP_BRKPT:
default:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
PC_sig(context) += 4;
break;
}
stack = setup_exception( context, &rec );
setup_raise_exception( context, stack );
setup_exception( context, &rec );
}
@ -673,7 +660,6 @@ 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 = { 0 };
struct stack_layout *stack;
switch (siginfo->si_code & 0xffff )
{
@ -719,8 +705,7 @@ static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
stack = setup_exception( sigcontext, &rec );
setup_raise_exception( sigcontext, stack );
setup_exception( sigcontext, &rec );
}
@ -732,8 +717,8 @@ static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { CONTROL_C_EXIT };
struct stack_layout *stack = setup_exception( sigcontext, &rec );
setup_raise_exception( sigcontext, stack );
setup_exception( sigcontext, &rec );
}
@ -745,8 +730,8 @@ 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 = { EXCEPTION_WINE_ASSERTION, EH_NONCONTINUABLE };
struct stack_layout *stack = setup_exception( sigcontext, &rec );
setup_raise_exception( sigcontext, stack );
setup_exception( sigcontext, &rec );
}