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authorTom Tromey <tromey@redhat.com>2014-01-20 12:58:03 +0000
committerMarcus Shawcroft <marcus.shawcroft@arm.com>2014-01-21 12:42:06 +0000
commitc616775d2c6df31786b71b4e135fba90b4a63f89 (patch)
tree8bca2817e63ac3ab118b84db1b274cca70a8f4b7
parent2a8396b962b8c57a2581023b62766a3ac44c3ba4 (diff)
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[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. (cherry picked from commit 3a3acb6afc753475675b5724f206e619d0c9590d) Conflicts: NEWS
-rw-r--r--NEWS2
-rw-r--r--ports/ChangeLog.aarch646
-rw-r--r--ports/sysdeps/unix/sysv/linux/aarch64/clone.S7
3 files changed, 13 insertions, 2 deletions
diff --git a/NEWS b/NEWS
index 2e8bb1684e3..c914dadd53e 100644
--- a/NEWS
+++ b/NEWS
@@ -9,7 +9,7 @@ Version 2.18.1
* The following bugs are resolved with this release:
- 15073, 15128, 15909, 15996, 16150, 16387.
+ 15073, 15128, 15909, 15996, 16150, 16169, 16387.
Version 2.18
diff --git a/ports/ChangeLog.aarch64 b/ports/ChangeLog.aarch64
index ce2fd5cf5e0..89259326d6c 100644
--- a/ports/ChangeLog.aarch64
+++ b/ports/ChangeLog.aarch64
@@ -1,3 +1,9 @@
+2014-01-20 Tom Tromey <tromey@redhat.com>
+
+ [BZ #16169]
+ * sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Add CFI
+ directives; Zero x29.
+
2014-01-07 Marcus Shawcroft <marcus.shawcroft@linaro.org>
[BZ #16387]
diff --git a/ports/sysdeps/unix/sysv/linux/aarch64/clone.S b/ports/sysdeps/unix/sysv/linux/aarch64/clone.S
index b359e6e8a32..7d8816977f2 100644
--- a/ports/sysdeps/unix/sysv/linux/aarch64/clone.S
+++ b/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 3f
@@ -72,6 +73,9 @@ 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
@@ -93,7 +97,8 @@ 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)