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ntdll: Implement setting the thread context on ARM64. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2019-08-13 14:53:07 +02:00
parent 1c9fdaab0f
commit 94a98cf5a2
1 changed files with 19 additions and 1 deletions
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20
dlls/ntdll/signal_arm64.c
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@ -252,7 +252,8 @@ __ASM_STDCALL_FUNC( RtlCaptureContext, 8,
*/
static void set_cpu_context( const CONTEXT *context )
{
FIXME( "Not implemented on ARM64\n" );
interlocked_xchg_ptr( (void **)&arm64_thread_data()->context, (void *)context );
raise( SIGUSR2 );
}
/***********************************************************************
@ -861,6 +862,21 @@ static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
}
/**********************************************************************
* usr2_handler
*
* Handler for SIGUSR2, used to set a thread context.
*/
static void usr2_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT *context = interlocked_xchg_ptr( (void **)&arm64_thread_data()->context, NULL );
if (!context) return;
if ((context->ContextFlags & ~CONTEXT_ARM64) & CONTEXT_FLOATING_POINT)
restore_fpu( context, sigcontext );
restore_context( context, sigcontext );
}
/***********************************************************************
* __wine_set_signal_handler (NTDLL.@)
*/
@ -955,6 +971,8 @@ void signal_init_process(void)
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr2_handler;
if (sigaction( SIGUSR2, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;