From 6135d50e44233d8c89ca788f78c669941ad09fb9 Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue, 8 Aug 2023 09:27:54 -0300
Subject: [PATCH 04/12] x86_64: Fix build with --disable-multiarch (BZ 30721)

With multiarch disabled, the default memmove implementation provides
the fortify routines for memcpy, mempcpy, and memmove.  However, it
does not provide the internal hidden definitions used when building
with fortify enabled.  The memset has a similar issue.

Checked on x86_64-linux-gnu building with different options:
default and --disable-multi-arch plus default, --disable-default-pie,
--enable-fortify-source={2,3}, and --enable-fortify-source={2,3}
with --disable-default-pie.
Tested-by: Andreas K. Huettel <dilfridge@gentoo.org>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

(cherry picked from commit 51cb52214fcd72849c640b12f5099ed3ac776181)
---
 sysdeps/x86_64/memcpy.S  | 2 +-
 sysdeps/x86_64/memmove.S | 3 +++
 sysdeps/x86_64/memset.S  | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/sysdeps/x86_64/memcpy.S b/sysdeps/x86_64/memcpy.S
index d98500a78a..4922cba657 100644
--- a/sysdeps/x86_64/memcpy.S
+++ b/sysdeps/x86_64/memcpy.S
@@ -1 +1 @@
-/* Implemented in memcpy.S.  */
+/* Implemented in memmove.S.  */
diff --git a/sysdeps/x86_64/memmove.S b/sysdeps/x86_64/memmove.S
index f0b84e3b52..c3c08165e1 100644
--- a/sysdeps/x86_64/memmove.S
+++ b/sysdeps/x86_64/memmove.S
@@ -46,6 +46,9 @@ weak_alias (__mempcpy, mempcpy)
 
 #ifndef USE_MULTIARCH
 libc_hidden_builtin_def (memmove)
+libc_hidden_builtin_def (__memmove_chk)
+libc_hidden_builtin_def (__memcpy_chk)
+libc_hidden_builtin_def (__mempcpy_chk)
 # if defined SHARED && IS_IN (libc)
 strong_alias (memmove, __memcpy)
 libc_hidden_ver (memmove, memcpy)
diff --git a/sysdeps/x86_64/memset.S b/sysdeps/x86_64/memset.S
index 7c99df36db..c6df24e8de 100644
--- a/sysdeps/x86_64/memset.S
+++ b/sysdeps/x86_64/memset.S
@@ -32,6 +32,7 @@
 #include "isa-default-impl.h"
 
 libc_hidden_builtin_def (memset)
+libc_hidden_builtin_def (__memset_chk)
 
 #if IS_IN (libc)
 libc_hidden_def (__wmemset)
-- 
2.33.0

