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