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* [glibc] hurd: Generalize init-first.c to support x86_64
@ 2023-02-24 19:44 Samuel Thibault
0 siblings, 0 replies; only message in thread
From: Samuel Thibault @ 2023-02-24 19:44 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=91689649656314b04f3dbee0415a9254eb1424dd
commit 91689649656314b04f3dbee0415a9254eb1424dd
Author: Sergey Bugaev <bugaevc@gmail.com>
Date: Thu Feb 23 18:14:36 2023 +0300
hurd: Generalize init-first.c to support x86_64
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-Id: <20230223151436.49180-2-bugaevc@gmail.com>
Diff:
---
sysdeps/mach/hurd/{i386 => x86}/init-first.c | 6 ++++++
1 file changed, 6 insertions(+)
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 05424563bf..2fccaefdd2 100644
--- a/sysdeps/mach/hurd/i386/init-first.c
+++ b/sysdeps/mach/hurd/x86/init-first.c
@@ -225,9 +225,15 @@ _hurd_stack_setup (void)
void doinit (intptr_t *data)
{
init ((void **) 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 ();
}
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2023-02-24 19:44 [glibc] hurd: Generalize init-first.c to support x86_64 Samuel Thibault
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