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wow64: Access the BTCpuSimulate backend function pointer directly.

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This commit is contained in:
Alexandre Julliard 2024-03-21 18:25:19 +01:00
parent d09501691e
commit 753875e80b
1 changed files with 30 additions and 23 deletions
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53
dlls/wow64/syscall.c
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@ -100,7 +100,7 @@ static BOOLEAN (WINAPI *pBTCpuIsProcessorFeaturePresent)(UINT);
static void (WINAPI *pBTCpuProcessInit)(void);
static NTSTATUS (WINAPI *pBTCpuSetContext)(HANDLE,HANDLE,void *,void *);
static void (WINAPI *pBTCpuThreadInit)(void);
static void (WINAPI *pBTCpuSimulate)(void);
static void (WINAPI *pBTCpuSimulate)(void) __attribute__((used));
static void * (WINAPI *p__wine_get_unix_opcode)(void);
static void * (WINAPI *pKiRaiseUserExceptionDispatcher)(void);
void (WINAPI *pBTCpuNotifyFlushInstructionCache2)( const void *, SIZE_T ) = NULL;
@ -974,41 +974,48 @@ NTSTATUS WINAPI Wow64SystemServiceEx( UINT num, UINT *args )
* cpu_simulate
*/
#ifdef __aarch64__
extern void DECLSPEC_NORETURN cpu_simulate( void (*func)(void) );
extern void DECLSPEC_NORETURN cpu_simulate(void);
__ASM_GLOBAL_FUNC( cpu_simulate,
"stp x29, x30, [sp, #-32]!\n\t"
".seh_save_fplr_x 32\n\t"
"stp x29, x30, [sp, #-16]!\n\t"
".seh_save_fplr_x 16\n\t"
".seh_endprologue\n\t"
".seh_handler cpu_simulate_handler, @except\n\t"
"str x0, [sp, #16]\n"
".seh_handler cpu_simulate_handler, @except\n"
".Lcpu_simulate_loop:\n\t"
"ldr x0, [sp, #16]\n\t"
"blr x0\n\t"
"adrp x16, pBTCpuSimulate\n\t"
"ldr x16, [x16, :lo12:pBTCpuSimulate]\n\t"
"blr x16\n\t"
"b .Lcpu_simulate_loop" )
__ASM_GLOBAL_FUNC( cpu_simulate_handler,
"stp x29, x30, [sp, #-32]!\n\t"
".seh_save_fplr_x 32\n\t"
"stp x29, x30, [sp, #-48]!\n\t"
".seh_save_fplr_x 48\n\t"
"stp x19, x20, [sp, #16]\n\t"
".seh_save_regp x19, 16\n\t"
".seh_endprologue\n\t"
"mov x19, x0\n\t" /* record */
"mov x20, x1\n\t" /* frame */
"stp x0, x2, [sp, #16]\n\t" /* record, context */
"add x0, sp, #16\n\t"
"ldr w4, [x0, #4]\n\t" /* record->ExceptionFlags */
"tst w4, #6\n\t" /* EXCEPTION_UNWINDING | EXCEPTION_EXIT_UNWIND */
"b.ne 1f\n\t"
"stp x0, x2, [sp, #32]\n\t" /* record, context */
"add x0, sp, #32\n\t"
"bl Wow64PassExceptionToGuest\n\t"
"mov x20, x0\n\t" /* frame */
"mov x0, x20\n\t" /* frame */
"adr x1, .Lcpu_simulate_loop\n\t" /* target */
"mov x19, x2\n\t" /* record */
"mov x2, x19\n\t" /* record */
"bl RtlUnwind\n\t"
"brk #1" )
"1:\tmov w0, #1\n\t" /* ExceptionContinueSearch */
"ldp x19, x20, [sp, #16]\n\t"
"ldp x29, x30, [sp], #48\n\t"
"ret" )
#else
extern void DECLSPEC_NORETURN cpu_simulate( void (*func)(void) );
extern void DECLSPEC_NORETURN cpu_simulate(void);
__ASM_GLOBAL_FUNC( cpu_simulate,
"subq $0x28, %rsp\n\t"
".seh_stackalloc 0x28\n\t"
".seh_endprologue\n\t"
".seh_handler cpu_simulate_handler, @except\n\t"
"movq %rcx,0x20(%rsp)\n"
".Lcpu_simulate_loop:\n\t"
"call *0x20(%rsp)\n\t"
"call *pBTCpuSimulate(%rip)\n\t"
"jmp .Lcpu_simulate_loop" )
__ASM_GLOBAL_FUNC( cpu_simulate_handler,
"subq $0x38, %rsp\n\t"
@ -1098,7 +1105,7 @@ void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CON
ctx.Eip = pLdrSystemDllInitBlock->pKiUserApcDispatcher;
frame.wow_context = &stack->context;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
cpu_simulate( pBTCpuSimulate );
cpu_simulate();
}
break;
@ -1124,7 +1131,7 @@ void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CON
ctx.R3 = arg3;
frame.wow_context = &stack->context;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
cpu_simulate( pBTCpuSimulate );
cpu_simulate();
}
break;
}
@ -1187,7 +1194,7 @@ NTSTATUS WINAPI Wow64KiUserCallbackDispatcher( ULONG id, void *args, ULONG len,
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (!__wine_setjmpex( &frame.jmpbuf, NULL ))
cpu_simulate( pBTCpuSimulate );
cpu_simulate();
else
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &orig_ctx );
}
@ -1212,7 +1219,7 @@ NTSTATUS WINAPI Wow64KiUserCallbackDispatcher( ULONG id, void *args, ULONG len,
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (!__wine_setjmpex( &frame.jmpbuf, NULL ))
cpu_simulate( pBTCpuSimulate );
cpu_simulate();
else
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &orig_ctx );
}
@ -1236,7 +1243,7 @@ void WINAPI Wow64LdrpInitialize( CONTEXT *context )
RtlRunOnceExecuteOnce( &init_done, process_init, NULL, NULL );
thread_init();
cpu_simulate( pBTCpuSimulate );
cpu_simulate();
}