From 378778fcb7dd97bed6aad7c009639b82608ba158 Mon Sep 17 00:00:00 2001
From: Richard Cooper <richard.cooper@arm.com>
Date: Thu, 4 Nov 2021 13:23:05 +0000
Subject: [PATCH] ext: Add extra defines to libelf to support Apple silicon.

The current version of libelf does not include a configuration
compatible with Apple silicon. This patch adds the required defines.

Change-Id: I9b7b9b1f711973159f31666d3fe480c2dc01a6b7
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/52723
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Austin Harris <mail@austin-harris.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
---
 ext/libelf/_libelf_config.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/ext/libelf/_libelf_config.h b/ext/libelf/_libelf_config.h
index 1b8f35b224..b968441bd7 100644
--- a/ext/libelf/_libelf_config.h
+++ b/ext/libelf/_libelf_config.h
@@ -36,9 +36,15 @@
 #define	LIBELF_ARCH		EM_386
 #define	LIBELF_BYTEORDER	ELFDATA2LSB
 #define	LIBELF_CLASS		ELFCLASS32
+#elif	defined(__aarch64__)
+#define	LIBELF_ARCH		EM_AARCH64
+#define	LIBELF_BYTEORDER	ELFDATA2LSB
+#define	LIBELF_CLASS		ELFCLASS64
+#else
+#error	Unknown Apple or DragonFly architecture.
 #endif
 
-#endif	/* __DragonFly__ */
+#endif	/* __APPLE__ || __DragonFly__ */
 
 #ifdef __FreeBSD__