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ntdll: Factor out setup_raise_exception. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2019-09-04 12:45:39 +02:00 committed by Alexandre Julliard
parent bd836a6f3e
commit be7a8d6b7a
1 changed files with 41 additions and 21 deletions
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62
dlls/ntdll/signal_x86_64.c
View File

@ -2733,6 +2733,17 @@ __ASM_GLOBAL_FUNC( raise_func_trampoline,
"call *%rdx\n\t"
"int $3")
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
ULONG64 rsi;
ULONG64 rdi;
ULONG64 rbp;
ULONG64 rip;
ULONG64 red_zone[16];
};
/***********************************************************************
* setup_exception
*
@ -2740,19 +2751,9 @@ __ASM_GLOBAL_FUNC( raise_func_trampoline,
* sigcontext so that the return from the signal handler will call
* the raise function.
*/
static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func func )
static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext )
{
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
ULONG64 rsi;
ULONG64 rdi;
ULONG64 rbp;
ULONG64 rip;
ULONG64 red_zone[16];
} *stack;
ULONG64 *rsp_ptr;
struct stack_layout *stack;
DWORD exception_code = 0;
stack = (struct stack_layout *)(RSP_sig(sigcontext) & ~15);
@ -2818,6 +2819,14 @@ static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func fun
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
return &stack->rec;
}
static void setup_raise_exception( ucontext_t *sigcontext, EXCEPTION_RECORD *rec, raise_func func )
{
struct stack_layout *stack = CONTAINING_RECORD( rec, struct stack_layout, rec );
ULONG64 *rsp_ptr;
/* store return address and %rbp without aligning, so that the offset is fixed */
rsp_ptr = (ULONG64 *)RSP_sig(sigcontext) - 16;
*(--rsp_ptr) = RIP_sig(sigcontext);
@ -2834,8 +2843,6 @@ static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func fun
RSP_sig(sigcontext) = (ULONG_PTR)stack;
/* clear single-step, direction, and align check flag */
EFL_sig(sigcontext) &= ~(0x100|0x400|0x40000);
return &stack->rec;
}
@ -2962,14 +2969,19 @@ static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
case 1: /* handled */
return;
case -1: /* overflow */
rec = setup_exception( sigcontext, raise_segv_exception );
rec = setup_exception( sigcontext );
rec->ExceptionCode = EXCEPTION_STACK_OVERFLOW;
setup_raise_exception( sigcontext, rec, raise_segv_exception );
return;
}
}
rec = setup_exception( sigcontext, raise_segv_exception );
if (rec->ExceptionCode == EXCEPTION_STACK_OVERFLOW) return;
rec = setup_exception( sigcontext );
if (rec->ExceptionCode == EXCEPTION_STACK_OVERFLOW)
{
setup_raise_exception( sigcontext, rec, raise_segv_exception );
return;
}
switch(TRAP_sig(ucontext))
{
@ -3020,6 +3032,8 @@ static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
setup_raise_exception( sigcontext, rec, raise_segv_exception );
}
/**********************************************************************
@ -3029,7 +3043,7 @@ static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
*/
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_trap_exception );
EXCEPTION_RECORD *rec = setup_exception( sigcontext );
switch (siginfo->si_code)
{
@ -3055,6 +3069,8 @@ static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
rec->ExceptionInformation[0] = 0;
break;
}
setup_raise_exception( sigcontext, rec, raise_trap_exception );
}
/**********************************************************************
@ -3064,7 +3080,7 @@ static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
EXCEPTION_RECORD *rec = setup_exception( sigcontext );
switch (siginfo->si_code)
{
@ -3094,6 +3110,8 @@ static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
rec->ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
setup_raise_exception( sigcontext, rec, raise_generic_exception );
}
/**********************************************************************
@ -3105,8 +3123,9 @@ static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
if (!dispatch_signal(SIGINT))
{
EXCEPTION_RECORD *rec = setup_exception( sigcontext, raise_generic_exception );
EXCEPTION_RECORD *rec = setup_exception( sigcontext );
rec->ExceptionCode = CONTROL_C_EXIT;
setup_raise_exception( sigcontext, rec, raise_generic_exception );
}
}
@ -3118,9 +3137,10 @@ 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 );
EXCEPTION_RECORD *rec = setup_exception( sigcontext );
rec->ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec->ExceptionFlags = EH_NONCONTINUABLE;
setup_raise_exception( sigcontext, rec, raise_generic_exception );
}