From: Rémi Bernon rbernon@codeweavers.com
To make sure gdb will unwind through it, and ignore that the syscall frame is inner its caller frame on the thread stack. --- dlls/ntdll/unix/signal_i386.c | 2 ++ dlls/ntdll/unix/signal_x86_64.c | 2 ++ 2 files changed, 4 insertions(+)
diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c index 89af605443d..472711fbcb1 100644 --- a/dlls/ntdll/unix/signal_i386.c +++ b/dlls/ntdll/unix/signal_i386.c @@ -2537,6 +2537,7 @@ __ASM_GLOBAL_FUNC( signal_exit_thread, * __wine_syscall_dispatcher */ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, + __ASM_CFI(".cfi_signal_frame\n\t") "movl %fs:0x1f8,%ecx\n\t" /* x86_thread_data()->syscall_frame */ "movw $0,0x02(%ecx)\n\t" /* frame->restore_flags */ "popl 0x08(%ecx)\n\t" /* frame->eip */ @@ -2729,6 +2730,7 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, * __wine_unix_call_dispatcher */ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, + __ASM_CFI(".cfi_signal_frame\n\t") "movl %fs:0x1f8,%ecx\n\t" /* x86_thread_data()->syscall_frame */ "movw $0,0x02(%ecx)\n\t" /* frame->restore_flags */ "popl 0x08(%ecx)\n\t" /* frame->eip */ diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index 97d3a009c03..865be183c08 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -2646,6 +2646,7 @@ __ASM_GLOBAL_FUNC( signal_exit_thread, * __wine_syscall_dispatcher */ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, + __ASM_CFI(".cfi_signal_frame\n\t") #ifdef __APPLE__ "movq %gs:0x30,%rcx\n\t" "movq 0x328(%rcx),%rcx\n\t" @@ -2870,6 +2871,7 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, * __wine_unix_call_dispatcher */ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, + __ASM_CFI(".cfi_signal_frame\n\t") "movq %rcx,%r10\n\t" #ifdef __APPLE__ "movq %gs:0x30,%rcx\n\t"