From 5d470261d9b865bf709f9f4d8da350e3536e6251 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Radek=20Barto=C5=88?= Date: Thu, 5 Jun 2025 13:15:22 +0200 Subject: [PATCH] Cygwin: stack base initialization for AArch64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Radek BartoĊˆ --- winsup/cygwin/dcrt0.cc | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc index f4c09befd..15b3479d3 100644 --- a/winsup/cygwin/dcrt0.cc +++ b/winsup/cygwin/dcrt0.cc @@ -1030,14 +1030,20 @@ _dll_crt0 () PVOID stackaddr = create_new_main_thread_stack (allocationbase); if (stackaddr) { -#ifdef __x86_64__ /* Set stack pointer to new address. Set frame pointer to stack pointer and subtract 32 bytes for shadow space. */ +#if defined(__x86_64__) __asm__ ("\n\ movq %[ADDR], %%rsp \n\ movq %%rsp, %%rbp \n\ subq $32,%%rsp \n" : : [ADDR] "r" (stackaddr)); +#elif defined(__aarch64__) + __asm__ ("\n\ + mov fp, %[ADDR] \n\ + sub sp, fp, #32 \n" + : : [ADDR] "r" (stackaddr) + : "memory"); #else #error unimplemented for this target #endif -- 2.49.0.vfs.0.4