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[AArch64] BZ #16169 Add CFI directives to clone.S

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[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.
This commit is contained in:
Tom Tromey 2014-01-20 12:58:03 +00:00 committed by Marcus Shawcroft
parent b67e7fe0f9
commit 3a3acb6afc
3 changed files with 16 additions and 5 deletions
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8
NEWS
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@ -22,10 +22,10 @@ Version 2.19
15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15985, 15988,
15997, 16032, 16034, 16036, 16037, 16038, 16041, 16055, 16071, 16072,
16074, 16077, 16078, 16103, 16112, 16133, 16143, 16144, 16146, 16150,
16151, 16153, 16167, 16172, 16195, 16214, 16245, 16271, 16274, 16283,
16289, 16293, 16314, 16316, 16330, 16337, 16338, 16356, 16365, 16366,
16369, 16372, 16375, 16379, 16384, 16385, 16386, 16387, 16390, 16394,
16400, 16407, 16408, 16414, 16430, 16453.
16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245, 16271, 16274,
16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338, 16356, 16365,
16366, 16369, 16372, 16375, 16379, 16384, 16385, 16386, 16387, 16390,
16394, 16400, 16407, 16408, 16414, 16430, 16453.
* Slovenian translations for glibc messages have been contributed by the
Translation Project's Slovenian team of translators.

6
ports/ChangeLog.aarch64
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@ -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.
2014-01-20 Marcus Shawcroft <marcus.shawcroft@linaro.org>
* sysdeps/aarch64/configure.ac: New file.

7
ports/sysdeps/unix/sysv/linux/aarch64/clone.S
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@ -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)