[newlib-cygwin/main] Cygwin: dumper: port to AArch64

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=5d65b2287d7e99bbfc7f204f0943738a3cca1e7e

commit 5d65b2287d7e99bbfc7f204f0943738a3cca1e7e
Author:     Radek Bartoň <[email protected]>
AuthorDate: Wed Jun 11 23:07:21 2025 +0200
Commit:     Corinna Vinschen <[email protected]>
CommitDate: Mon Jul 14 13:48:15 2025 +0200

    Cygwin: dumper: port to AArch64
    
    This patch allows to build winsup/utils/dumper.cc for AArch64 by handling target
    architecture condition in dumper::init_core_dump.
    
    Signed-off-by: Radek Bartoň <[email protected]>

Diff:
---
 winsup/utils/dumper.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/winsup/utils/dumper.cc b/winsup/utils/dumper.cc
index 994f9b683c72..b3151e66d403 100644
--- a/winsup/utils/dumper.cc
+++ b/winsup/utils/dumper.cc
@@ -700,8 +700,10 @@ dumper::init_core_dump ()
 {
   bfd_init ();
 
-#ifdef __x86_64__
+#if defined(__x86_64__)
   const char *target = "elf64-x86-64";
+#elif defined(__aarch64__)
+  const char *target = "elf64-aarch64";
 #else
 #error unimplemented for this target
 #endif