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server: On macOS, fake debug registers when running under Rosetta.

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Based on a patch by Tim Clem <tclem@codeweavers.com>.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54367
This commit is contained in:
Brendan Shanks 2023-02-08 15:51:29 -08:00 committed by Alexandre Julliard
parent d85bc9f433
commit 93fde56b49
1 changed files with 39 additions and 0 deletions
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39
server/mach.c
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@ -31,6 +31,9 @@
#ifdef HAVE_SYS_SYSCALL_H
#include <sys/syscall.h>
#endif
#ifdef HAVE_SYS_SYSCTL_H
#include <sys/sysctl.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
@ -74,6 +77,25 @@ static mach_port_t get_process_port( struct process *process )
return process->trace_data;
}
static int is_rosetta( void )
{
static int rosetta_status, did_check = 0;
if (!did_check)
{
/* returns 0 for native process or on error, 1 for translated */
int ret = 0;
size_t size = sizeof(ret);
if (sysctlbyname( "sysctl.proc_translated", &ret, &size, NULL, 0 ) == -1)
rosetta_status = 0;
else
rosetta_status = ret;
did_check = 1;
}
return rosetta_status;
}
/* initialize the process control mechanism */
void init_tracing_mechanism(void)
{
@ -165,6 +187,14 @@ void get_thread_context( struct thread *thread, context_t *context, unsigned int
/* all other regs are handled on the client side */
assert( flags == SERVER_CTX_DEBUG_REGISTERS );
if (is_rosetta())
{
/* getting debug registers of a translated process is not supported cross-process, return all zeroes */
memset( &context->debug, 0, sizeof(context->debug) );
context->flags |= SERVER_CTX_DEBUG_REGISTERS;
return;
}
if (thread->unix_pid == -1 || !process_port ||
mach_port_extract_right( process_port, thread->unix_tid,
MACH_MSG_TYPE_COPY_SEND, &port, &type ))
@ -251,6 +281,15 @@ void set_thread_context( struct thread *thread, const context_t *context, unsign
return;
}
if (is_rosetta())
{
/* Setting debug registers of a translated process is not supported cross-process
* (and even in-process, setting debug registers never has the desired effect).
*/
set_error( STATUS_UNSUCCESSFUL );
return;
}
/* get the debug state to determine which flavor to use */
ret = thread_get_state(port, x86_DEBUG_STATE, (thread_state_t)&state, &count);
if (ret)