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ntdll: Use a stack_layout structure to build exception data on ARM64. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2019-09-12 21:07:14 +02:00
parent d9ec920fd9
commit 7736f3837e
1 changed files with 42 additions and 38 deletions
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80
dlls/ntdll/signal_arm64.c
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@ -114,6 +114,15 @@ static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
static const size_t signal_stack_size = max( MINSIGSTKSZ, 8192 );
typedef void (WINAPI *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[2];
};
typedef int (*wine_signal_handler)(unsigned int sig);
static wine_signal_handler handlers[256];
@ -471,18 +480,13 @@ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
/***********************************************************************
* setup_exception_record
* setup_exception
*
* Setup the exception record and context on the thread stack.
*/
static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func func )
static struct stack_layout *setup_exception( ucontext_t *sigcontext, raise_func func )
{
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
void *redzone[2];
} *stack;
struct stack_layout *stack;
DWORD exception_code = 0;
/* push the stack_layout structure */
@ -503,7 +507,7 @@ static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func fun
REGn_sig(0, sigcontext) = (ULONG_PTR)&stack->rec; /* first arg for raise_func */
REGn_sig(1, sigcontext) = (ULONG_PTR)&stack->context; /* second arg for raise_func */
return &stack->rec;
return stack;
}
/**********************************************************************
@ -1039,7 +1043,7 @@ static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL f
*/
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD *rec;
struct stack_layout *stack;
ucontext_t *context = ucontext;
/* check for page fault inside the thread stack */
@ -1050,32 +1054,32 @@ static void segv_handler( int signal, siginfo_t *info, void *ucontext )
case 1: /* handled */
return;
case -1: /* overflow */
rec = setup_exception( context, raise_segv_exception );
rec->ExceptionCode = EXCEPTION_STACK_OVERFLOW;
stack = setup_exception( context, raise_segv_exception );
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
return;
}
}
rec = setup_exception( context, raise_segv_exception );
if (rec->ExceptionCode == EXCEPTION_STACK_OVERFLOW) return;
stack = setup_exception( context, raise_segv_exception );
if (stack->rec.ExceptionCode == EXCEPTION_STACK_OVERFLOW) return;
switch(signal)
{
case SIGILL: /* Invalid opcode exception */
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case SIGSEGV: /* Segmentation fault */
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec->NumberParameters = 2;
rec->ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
rec->ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
stack->rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
stack->rec.NumberParameters = 2;
stack->rec.ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
stack->rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
break;
case SIGBUS: /* Alignment check exception */
rec->ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
stack->rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR("Got unexpected signal %i\n", signal);
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
}
@ -1088,16 +1092,16 @@ static void segv_handler( int signal, siginfo_t *info, void *ucontext )
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
{
ucontext_t *context = ucontext;
EXCEPTION_RECORD *rec = setup_exception( context, raise_trap_exception );
struct stack_layout *stack = setup_exception( context, raise_trap_exception );
switch (info->si_code)
{
case TRAP_TRACE:
rec->ExceptionCode = EXCEPTION_SINGLE_STEP;
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
rec->ExceptionCode = EXCEPTION_BREAKPOINT;
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
break;
}
}
@ -1109,50 +1113,50 @@ 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 = setup_exception( sigcontext, raise_generic_exception );
struct stack_layout *stack = setup_exception( sigcontext, raise_generic_exception );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
rec->ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
rec->ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
stack->rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
rec->ExceptionCode = EXCEPTION_INT_OVERFLOW;
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
rec->ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
stack->rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
rec->ExceptionCode = EXCEPTION_FLT_OVERFLOW;
stack->rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
rec->ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
stack->rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
rec->ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
stack->rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
rec->ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
stack->rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
}
@ -1166,9 +1170,9 @@ static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
if (!dispatch_signal(SIGINT))
{
EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
struct stack_layout *stack = setup_exception( sigcontext, raise_generic_exception );
rec->ExceptionCode = CONTROL_C_EXIT;
stack->rec.ExceptionCode = CONTROL_C_EXIT;
}
}
@ -1180,10 +1184,10 @@ 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 = setup_exception( sigcontext, raise_generic_exception );
struct stack_layout *stack = setup_exception( sigcontext, raise_generic_exception );
rec->ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec->ExceptionFlags = EH_NONCONTINUABLE;
stack->rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
stack->rec.ExceptionFlags = EH_NONCONTINUABLE;
}