Alexandre Julliard : ntdll: Don't handle breakpoint interrupts in Wow64 mode.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2736fabc585b89328ae64dafaafabd262d2f200b
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=2736fabc585b89328ae64dafa...

Author: Alexandre Julliard 
Date:   Fri Aug 20 11:33:32 2021 +0200

ntdll: Don't handle breakpoint interrupts in Wow64 mode.

Signed-off-by: Alexandre Julliard

---

dlls/ntdll/unix/signal_x86_64.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c
index 2d55bd006c7..f541306d950 100644
--- a/dlls/ntdll/unix/signal_x86_64.c
+++ b/dlls/ntdll/unix/signal_x86_64.c
@@ -2436,8 +2436,10 @@ static inline BOOL handle_interrupt( ucontext_t *sigcontext, EXCEPTION_RECORD *r
         rec->ExceptionCode = STATUS_ASSERTION_FAILURE;
         break;
     case 0x2d:
-        switch (context->Rax)
+        if (CS_sig(sigcontext) == cs64_sel)
         {
+            switch (context->Rax)
+            {
             case 1: /* BREAKPOINT_PRINT */
             case 3: /* BREAKPOINT_LOAD_SYMBOLS */
             case 4: /* BREAKPOINT_UNLOAD_SYMBOLS */
@@ -2445,6 +2447,7 @@ static inline BOOL handle_interrupt( ucontext_t *sigcontext, EXCEPTION_RECORD *r
                 RIP_sig(sigcontext) += 3;
                 leave_handler( sigcontext );
                 return TRUE;
+            }
         }
         context->Rip += 3;
         rec->ExceptionCode = EXCEPTION_BREAKPOINT;