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ntdll: Do not override existing context's RAX when dispatching user APC on x86_64. 

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Gabriel Ivăncescu 2021-01-08 20:26:16 +02:00 committed by Alexandre Julliard
parent 775dac0238
commit 22dba3f0fb
1 changed files with 1 additions and 1 deletions
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2
dlls/ntdll/unix/signal_x86_64.c
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@ -2049,6 +2049,7 @@ struct apc_stack_layout * WINAPI setup_user_apc_dispatcher_stack( CONTEXT *conte
{ {
c.ContextFlags = CONTEXT_FULL; c.ContextFlags = CONTEXT_FULL;
NtGetContextThread( GetCurrentThread(), &c ); NtGetContextThread( GetCurrentThread(), &c );
c.Rax = STATUS_USER_APC;
context = &c; context = &c;
} }
memmove( &stack->context, context, sizeof(stack->context) ); memmove( &stack->context, context, sizeof(stack->context) );
@ -2076,7 +2077,6 @@ __ASM_GLOBAL_FUNC( call_user_apc_dispatcher,
"call " __ASM_NAME("setup_user_apc_dispatcher_stack") "\n\t" "call " __ASM_NAME("setup_user_apc_dispatcher_stack") "\n\t"
"movq %rax,%rsp\n\t" "movq %rax,%rsp\n\t"
"leaq 0x30(%rsp),%rcx\n\t" /* context */ "leaq 0x30(%rsp),%rcx\n\t" /* context */
"movq $0xc0,0x78(%rcx)\n\t" /* context.Rax = STATUS_USER_APC */
"movq %r12,%rdx\n\t" /* ctx */ "movq %r12,%rdx\n\t" /* ctx */
"movq %r13,%r8\n\t" /* arg1 */ "movq %r13,%r8\n\t" /* arg1 */
"movq %r14,%r9\n" /* arg2 */ "movq %r14,%r9\n" /* arg2 */