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Date: Mon, 30 Oct 2023 17:56:18 GMT
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To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org,
dev-commits-src-main@FreeBSD.org
From: Andrew Turner <andrew@FreeBSD.org>
Subject: git: 5270cc9757fb - main - rtld: Teach rtld about the BTI
elf note
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The branch main has been updated by andrew:
URL: https://cgit.FreeBSD.org/src/commit/?id=5270cc9757fb4e0c1303ec44c2602b75acf3806d
commit 5270cc9757fb4e0c1303ec44c2602b75acf3806d
Author: Andrew Turner <andrew@FreeBSD.org>
AuthorDate: 2023-10-12 16:29:46 +0000
Commit: Andrew Turner <andrew@FreeBSD.org>
CommitDate: 2023-10-30 17:55:44 +0000
rtld: Teach rtld about the BTI elf note
Add the Branch Target Identification (BTI) note to libc assembly
sources. As all obect files need the note for rtld to have it we need
to insert it in all asm files.
Reviewed by: markj, emaste
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D42228
---
libexec/rtld-elf/aarch64/rtld_start.S | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libexec/rtld-elf/aarch64/rtld_start.S b/libexec/rtld-elf/aarch64/rtld_start.S
index 7dc87213b5fb..8de3e021d567 100644
--- a/libexec/rtld-elf/aarch64/rtld_start.S
+++ b/libexec/rtld-elf/aarch64/rtld_start.S
@@ -28,6 +28,8 @@
*/
#include <machine/asm.h>
+#include <sys/elf_common.h>
+
ENTRY(.rtld_start)
.cfi_undefined x30
mov x19, x0 /* Put ps_strings in a callee-saved register */
@@ -249,3 +251,5 @@ ENTRY(_rtld_tlsdesc_dynamic)
.cfi_adjust_cfa_offset -2 * 16
ret
END(_rtld_tlsdesc_dynamic)
+
+GNU_PROPERTY_AARCH64_FEATURE_1_NOTE(GNU_PROPERTY_AARCH64_FEATURE_1_VAL)