From 3a3acb6afc753475675b5724f206e619d0c9590d Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@redhat.com>
Date: Mon, 20 Jan 2014 12:58:03 +0000
Subject: [PATCH] [AArch64] BZ #16169 Add CFI directives to clone.S
[BZ #16169] Add CFI directives to the AArch64 clone.S implementation
and ensure that the FP in the child is zero'd in order to comply with
AAPCS.
---
NEWS | 8 ++++----
ports/ChangeLog.aarch64 | 6 ++++++
ports/sysdeps/unix/sysv/linux/aarch64/clone.S | 7 ++++++-
3 files changed, 16 insertions(+), 5 deletions(-)
Index: glibc-2.17-c758a686/ports/sysdeps/unix/sysv/linux/aarch64/clone.S
===================================================================
--- glibc-2.17-c758a686/ports/sysdeps/unix/sysv/linux/aarch64/clone.S
+++ glibc-2.17-c758a686/ports/sysdeps/unix/sysv/linux/aarch64/clone.S
@@ -63,6 +63,7 @@ ENTRY(__clone)
mov x8, #SYS_ify(clone)
/* X0:flags, x1:newsp, x2:parenttidptr, x3:newtls, x4:childtid. */
svc 0x0
+ cfi_endproc
cmp x0, #0
beq 2f
blt C_SYMBOL_NAME(__syscall_error)
@@ -71,6 +72,9 @@ ENTRY(__clone)
b syscall_error
2:
+ cfi_startproc
+ cfi_undefined (x30)
+ mov x29, 0
#ifdef RESET_PID
tbnz x5, #CLONE_THREAD_BIT, 3f
mov x0, #-1
@@ -92,7 +96,8 @@ ENTRY(__clone)
/* We are done, pass the return value through x0. */
b HIDDEN_JUMPTARGET(_exit)
-
+ cfi_endproc
+ cfi_startproc
PSEUDO_END (__clone)
weak_alias (__clone, clone)