linux-kernel - [PATCH] kbuild: dummy-tools: Add support for -fpatchable-function-entry

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Date:   Mon, 30 Oct 2023 09:32:18 +0100
From:   Michal Suchanek <msuchanek@...e.de>
To:     linux-kbuild@...r.kernel.org
Cc:     Michal Suchanek <msuchanek@...e.de>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Naveen N Rao <naveen@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] kbuild: dummy-tools: Add support for -fpatchable-function-entry

dummy-gcc does not produce the output
gcc-check-fpatchable-function-entry.sh expects. Add a base64 encoded
output of the second test.

Fixes: 0f71dcfb4aef ("powerpc/ftrace: Add support for -fpatchable-function-entry")
Signed-off-by: Michal Suchanek <msuchanek@...e.de>
---
 scripts/dummy-tools/gcc | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc
index 07f6dc4c5cf6..8ab81a905cc2 100755
--- a/scripts/dummy-tools/gcc
+++ b/scripts/dummy-tools/gcc
@@ -73,6 +73,25 @@ if arg_contain -Wa,--version "$@"; then
 	exit 0
 fi
 
+if arg_contain -fpatchable-function-entry=2 "$@"; then
+	base64 -d <<-EOF
+	CS5maWxlCSI8c3RkaW4+IgoJLm1hY2hpbmUgcG93ZXI4CgkuYWJpdmVyc2lvbiAyCgkuc2VjdGlv
+	bgkiLnRleHQiCgkuYWxpZ24gMgoJLnAyYWxpZ24gNCwsMTUKCS5nbG9ibCBmdW5jCgkudHlwZQlm
+	dW5jLCBAZnVuY3Rpb24KZnVuYzoKLkxGQjA6CgkuY2ZpX3N0YXJ0cHJvYwouTENGMDoKMDoJYWRk
+	aXMgMiwxMiwuVE9DLi0uTENGMEBoYQoJYWRkaSAyLDIsLlRPQy4tLkxDRjBAbAoJLmxvY2FsZW50
+	cnkJZnVuYywuLWZ1bmMKCS5zZWN0aW9uCV9fcGF0Y2hhYmxlX2Z1bmN0aW9uX2VudHJpZXMsImF3
+	byIsQHByb2diaXRzLC5MUEZFMAoJLmFsaWduIDMKCS44Ynl0ZQkuTFBGRTAKCS5zZWN0aW9uCSIu
+	dGV4dCIKLkxQRkUwOgoJbm9wCglub3AKCWFkZGlzIDksMiwuTEFOQ0hPUjBAdG9jQGhhCglsd2Eg
+	MywuTEFOQ0hPUjBAdG9jQGwoOSkKCWJscgoJLmxvbmcgMAoJLmJ5dGUgMCwwLDAsMCwwLDAsMCww
+	CgkuY2ZpX2VuZHByb2MKLkxGRTA6Cgkuc2l6ZQlmdW5jLC4tZnVuYwoJLmdsb2JsIHgKCS5zZWN0
+	aW9uCSIuYnNzIgoJLmFsaWduIDIKCS5zZXQJLkxBTkNIT1IwLC4gKyAwCgkudHlwZQl4LCBAb2Jq
+	ZWN0Cgkuc2l6ZQl4LCA0Cng6CgkuemVybwk0CgkuaWRlbnQJIkdDQzogKFNVU0UgTGludXgpIDEz
+	LjIuMSAyMDIzMDkxMiBbcmV2aXNpb24gYjk2ZTY2ZmQ0ZWYzZTM2OTgzOTY5ZmI4Y2RkMTk1NmY1
+	NTFhMDc0Yl0iCgkuc2VjdGlvbgkubm90ZS5HTlUtc3RhY2ssIiIsQHByb2diaXRzCg==
+	EOF
+	exit 0
+fi
+
 if arg_contain -S "$@"; then
 	# For scripts/gcc-x86-*-has-stack-protector.sh
 	if arg_contain -fstack-protector "$@"; then
-- 
2.42.0