https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=49ba5f467c4278be04274c96d799943830d5f6d3

commit 49ba5f467c4278be04274c96d799943830d5f6d3
Author:     Radek Bartoň <radek.bar...@microsoft.com>
AuthorDate: Mon Jun 9 13:08:35 2025 +0200
Commit:     Corinna Vinschen <cori...@vinschen.de>
CommitDate: Thu Jul 17 11:28:41 2025 +0200

    Cygwin: cygcheck: port to AArch64
    
    This patch ports `winsup/utils/mingw/cygcheck.cc` to AArch64:
     - Adds arch=aarch64 to packages API URL.
     - Ports dll_info function.
    
    Signed-off-by: Radek Bartoň <radek.bar...@microsoft.com>

Diff:
---
 winsup/utils/mingw/cygcheck.cc | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/winsup/utils/mingw/cygcheck.cc b/winsup/utils/mingw/cygcheck.cc
index 89a08e560f4f..d17909bfccc4 100644
--- a/winsup/utils/mingw/cygcheck.cc
+++ b/winsup/utils/mingw/cygcheck.cc
@@ -654,16 +654,22 @@ dll_info (const char *path, HANDLE fh, int lvl, int 
recurse)
   WORD arch = get_word (fh, pe_header_offset + 4);
   if (GetLastError () != NO_ERROR)
     display_error ("get_word");
-#ifdef __x86_64__
+#if defined(__x86_64__)
   if (arch != IMAGE_FILE_MACHINE_AMD64)
     {
       puts (verbose ? " (not x86_64 dll)" : "\n");
       return;
     }
-  int base_off = 108;
+#elif defined (__aarch64__)
+  if (arch != IMAGE_FILE_MACHINE_ARM64)
+    {
+      puts (verbose ? " (not aarch64 dll)" : "\n");
+      return;
+    }
 #else
 #error unimplemented for this target
 #endif
+  int base_off = 108;
   int opthdr_ofs = pe_header_offset + 4 + 20;
   unsigned short v[6];
 
@@ -2108,8 +2114,10 @@ static const char safe_chars[] = "$-_.!*'(),";
 static const char grep_base_url[] =
        "http://cygwin.com/cgi-bin2/package-grep.cgi?text=1&grep=";;
 
-#ifdef __x86_64__
+#if defined(__x86_64__)
 #define ARCH_STR  "&arch=x86_64"
+#elif defined(__aarch64__)
+#define ARCH_STR  "&arch=aarch64"
 #else
 #error unimplemented for this target
 #endif

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