Index: compiler-rt/lib/builtins/assembly.h =================================================================== --- compiler-rt/lib/builtins/assembly.h +++ compiler-rt/lib/builtins/assembly.h @@ -105,9 +105,11 @@ .popsection #if BTI_FLAG != 0 -#define BTI_C bti c +#define BTI_C hint #34 +#define BTI_J hint #36 #else #define BTI_C +#define BTI_J #endif #if (BTI_FLAG | PAC_FLAG) != 0 Index: compiler-rt/lib/hwasan/hwasan_setjmp.S =================================================================== --- compiler-rt/lib/hwasan/hwasan_setjmp.S +++ compiler-rt/lib/hwasan/hwasan_setjmp.S @@ -12,6 +12,7 @@ //===----------------------------------------------------------------------===// #include "sanitizer_common/sanitizer_asm.h" +#include "builtins/assembly.h" #if HWASAN_WITH_INTERCEPTORS && defined(__aarch64__) #include "sanitizer_common/sanitizer_platform.h" @@ -34,6 +35,7 @@ ASM_TYPE_FUNCTION(__interceptor_setjmp) __interceptor_setjmp: CFI_STARTPROC + BTI_C mov x1, #0 b __interceptor_sigsetjmp CFI_ENDPROC @@ -46,6 +48,7 @@ ASM_TYPE_FUNCTION(__interceptor_setjmp_bionic) __interceptor_setjmp_bionic: CFI_STARTPROC + BTI_C mov x1, #1 b __interceptor_sigsetjmp CFI_ENDPROC @@ -56,6 +59,7 @@ ASM_TYPE_FUNCTION(__interceptor_sigsetjmp) __interceptor_sigsetjmp: CFI_STARTPROC + BTI_C stp x19, x20, [x0, #0<<3] stp x21, x22, [x0, #2<<3] stp x23, x24, [x0, #4<<3] @@ -98,3 +102,5 @@ // We do not need executable stack. NO_EXEC_STACK_DIRECTIVE + +GNU_PROPERTY_BTI_PAC Index: compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S =================================================================== --- compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S +++ compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S @@ -1,4 +1,5 @@ #include "sanitizer_common/sanitizer_asm.h" +#include "builtins/assembly.h" // The content of this file is AArch64-only: #if defined(__aarch64__) @@ -74,6 +75,8 @@ .global __hwasan_tag_mismatch .type __hwasan_tag_mismatch, %function __hwasan_tag_mismatch: + BTI_J + // Compute the granule position one past the end of the access. mov x16, #1 and x17, x1, #0xf @@ -106,6 +109,7 @@ .type __hwasan_tag_mismatch_v2, %function __hwasan_tag_mismatch_v2: CFI_STARTPROC + BTI_J // Set the CFA to be the return address for caller of __hwasan_check_*. Note // that we do not emit CFI predicates to describe the contents of this stack @@ -150,3 +154,5 @@ // We do not need executable stack. NO_EXEC_STACK_DIRECTIVE + +GNU_PROPERTY_BTI_PAC