diff mbox series

[v2,2/4] hurd: Generalize init-first.c to support x86_64

Message ID 20230221211932.296459-3-bugaevc@gmail.com
State New
Headers show
Series More x86_64-gnu glibc work | expand

Commit Message

Sergey Bugaev Feb. 21, 2023, 9:19 p.m. UTC 
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
---
 sysdeps/mach/hurd/{i386 => x86}/init-first.c | 6 ++++++
 1 file changed, 6 insertions(+)
 rename sysdeps/mach/hurd/{i386 => x86}/init-first.c (97%)
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Patch

diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/x86/init-first.c
similarity index 97%
rename from sysdeps/mach/hurd/i386/init-first.c
rename to sysdeps/mach/hurd/x86/init-first.c
index 34e8dcc0..a187af82 100644
--- a/sysdeps/mach/hurd/i386/init-first.c
+++ b/sysdeps/mach/hurd/x86/init-first.c
@@ -238,9 +238,15 @@  _hurd_stack_setup (void)
   void doinit (intptr_t *data)
     {
       init ((int *) data);
+# ifdef __x86_64__
+      asm volatile ("movq %0, %%rsp\n" /* Switch to new outermost stack.  */
+                    "xorq %%rbp, %%rbp\n" /* Clear outermost frame pointer.  */
+                    "jmp *%1" : : "r" (data), "r" (caller));
+# else
       asm volatile ("movl %0, %%esp\n" /* Switch to new outermost stack.  */
 		    "xorl %%ebp, %%ebp\n" /* Clear outermost frame pointer.  */
 		    "jmp *%1" : : "r" (data), "r" (caller));
+# endif
       __builtin_unreachable ();
     }