67 lines
2.0 KiB
Diff
67 lines
2.0 KiB
Diff
From 723a13c41dca89e37f3e02120c9385b33ee73439 Mon Sep 17 00:00:00 2001
|
|
From: Tulio Magno Quites Machado Filho <tuliom@redhat.com>
|
|
Date: Mon, 17 Jun 2024 16:47:04 -0300
|
|
Subject: [PATCH] [tsan][aarch64] Fix branch protection in interceptors
|
|
|
|
Start functions with BTI in order to identify the function as a valid
|
|
branch target.
|
|
Also add the BTI marker to tsan_rtl_aarch64.S.
|
|
|
|
With this patch, libclang_rt.tsan.so can now be generated with
|
|
DT_AARCH64_BTI_PLT when built with -mbranch-protection=standard.
|
|
---
|
|
compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S | 7 +++++++
|
|
1 file changed, 7 insertions(+)
|
|
|
|
diff --git a/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S b/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S
|
|
index c6162659b8766..7d920bee4a2db 100644
|
|
--- a/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S
|
|
+++ b/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S
|
|
@@ -2,6 +2,7 @@
|
|
#if defined(__aarch64__)
|
|
|
|
#include "sanitizer_common/sanitizer_asm.h"
|
|
+#include "builtins/assembly.h"
|
|
|
|
#if !defined(__APPLE__)
|
|
.section .text
|
|
@@ -16,6 +17,7 @@ ASM_HIDDEN(__tsan_setjmp)
|
|
ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(setjmp))
|
|
ASM_SYMBOL_INTERCEPTOR(setjmp):
|
|
CFI_STARTPROC
|
|
+ BTI_C
|
|
|
|
// Save frame/link register
|
|
stp x29, x30, [sp, -32]!
|
|
@@ -66,6 +68,7 @@ ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(setjmp))
|
|
ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(_setjmp))
|
|
ASM_SYMBOL_INTERCEPTOR(_setjmp):
|
|
CFI_STARTPROC
|
|
+ BTI_C
|
|
|
|
// Save frame/link register
|
|
stp x29, x30, [sp, -32]!
|
|
@@ -116,6 +119,7 @@ ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(_setjmp))
|
|
ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))
|
|
ASM_SYMBOL_INTERCEPTOR(sigsetjmp):
|
|
CFI_STARTPROC
|
|
+ BTI_C
|
|
|
|
// Save frame/link register
|
|
stp x29, x30, [sp, -32]!
|
|
@@ -168,6 +172,7 @@ ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))
|
|
ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))
|
|
ASM_SYMBOL_INTERCEPTOR(__sigsetjmp):
|
|
CFI_STARTPROC
|
|
+ BTI_C
|
|
|
|
// Save frame/link register
|
|
stp x29, x30, [sp, -32]!
|
|
@@ -217,4 +222,6 @@ ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))
|
|
|
|
NO_EXEC_STACK_DIRECTIVE
|
|
|
|
+GNU_PROPERTY_BTI_PAC
|
|
+
|
|
#endif
|