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* [glibc/release/2.32/master] aarch64: Add unwind information to _start (bug 26853)
@ 2020-11-10 14:28 Florian Weimer
0 siblings, 0 replies; only message in thread
From: Florian Weimer @ 2020-11-10 14:28 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c6e794640c324db37038c6a8606f3f5f8903250b
commit c6e794640c324db37038c6a8606f3f5f8903250b
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Nov 9 11:31:04 2020 +0100
aarch64: Add unwind information to _start (bug 26853)
This adds CFI directives which communicate that the stack ends
with this function.
Fixes bug 26853.
(cherry picked from commit 5edf3d9fd6efe06fda37b2a460e60690a90457a4)
Diff:
---
NEWS | 1 +
sysdeps/aarch64/start.S | 7 +++----
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/NEWS b/NEWS
index 3030735839..d2a484462b 100644
--- a/NEWS
+++ b/NEWS
@@ -15,6 +15,7 @@ The following bugs are resolved with this release:
[26637] libc: semctl SEM_STAT_ANY fails to pass the buffer specified
by the caller to the kernel
[26639] libc: msgctl IPC_INFO and MSG_INFO return garbage
+ [26853] aarch64: Missing unwind information in statically linked startup code
Version 2.32
diff --git a/sysdeps/aarch64/start.S b/sysdeps/aarch64/start.S
index 75393e1c18..108f602721 100644
--- a/sysdeps/aarch64/start.S
+++ b/sysdeps/aarch64/start.S
@@ -43,11 +43,9 @@
*/
.text
- .globl _start
- .type _start,#function
-_start:
- BTI_C
+ENTRY(_start)
/* Create an initial frame with 0 LR and FP */
+ cfi_undefined (x30)
mov x29, #0
mov x30, #0
@@ -103,6 +101,7 @@ _start:
__wrap_main:
b main
#endif
+END(_start)
/* Define a symbol for the first piece of initialized data. */
.data
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2020-11-10 14:28 [glibc/release/2.32/master] aarch64: Add unwind information to _start (bug 26853) Florian Weimer
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