[newlib-cygwin] Cygwin: profile.c: drop i686 register access

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=20adacdca2fe2bd3d41a7287f77d42b4bf22f423

commit 20adacdca2fe2bd3d41a7287f77d42b4bf22f423
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Fri Jul 29 12:17:43 2022 +0200

    Cygwin: profile.c: drop i686 register access
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/profil.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/winsup/cygwin/profil.c b/winsup/cygwin/profil.c
index be59b4909..2c3a7a5eb 100644
--- a/winsup/cygwin/profil.c
+++ b/winsup/cygwin/profil.c
@@ -42,10 +42,10 @@ get_thrpc (HANDLE thr)
   ctx.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
   pc = (size_t) - 1;
   if (GetThreadContext (thr, &ctx)) {
-#ifndef _WIN64
-    pc = ctx.Eip;
-#else
+#ifdef __x86_64__
     pc = ctx.Rip;
+#else
+#error unimplemented for this target
 #endif
   }
   ResumeThread (thr);