From: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Thu, 2 Jul 2020 15:04:51 +0000 (+0100)
Subject: aarch64: Add missing ACLE support for BTI
X-Git-Tag: releases/gcc-10.2.0~35
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e8b45f2f4e725afb432436e0a9fc2050f9e8d10;p=thirdparty%2Fgcc.git

aarch64: Add missing ACLE support for BTI

Define the __ARM_FEATURE_BTI_DEFAULT feature test
macro when BTI branch protection is enabled.

2020-07-09  Szabolcs Nagy  <szabolcs.nagy@arm.com>

gcc/ChangeLog:

	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Add
	__ARM_FEATURE_BTI_DEFAULT support.

(cherry picked from commit 63b6808e69699ba576492efa29d92b626cc26eba)
---

diff --git a/gcc/config/aarch64/aarch64-c.c b/gcc/config/aarch64/aarch64-c.c
index e1c1cd415dcb..1882288af8df 100644
--- a/gcc/config/aarch64/aarch64-c.c
+++ b/gcc/config/aarch64/aarch64-c.c
@@ -178,6 +178,9 @@ aarch64_update_cpp_builtins (cpp_reader *pfile)
   aarch64_def_or_undef (TARGET_RNG, "__ARM_FEATURE_RNG", pfile);
   aarch64_def_or_undef (TARGET_MEMTAG, "__ARM_FEATURE_MEMORY_TAGGING", pfile);
 
+  aarch64_def_or_undef (aarch64_bti_enabled (),
+			"__ARM_FEATURE_BTI_DEFAULT", pfile);
+
   aarch64_def_or_undef (TARGET_I8MM, "__ARM_FEATURE_MATMUL_INT8", pfile);
   aarch64_def_or_undef (TARGET_BF16_SIMD,
 			"__ARM_FEATURE_BF16_VECTOR_ARITHMETIC", pfile);