From: Sergey V. Lobanov <sergey@lobanov.in>
Date: Mon, 24 Jan 2022 23:29:44 +0000 (+0300)
Subject: mkimage: fix segfault on MacOS arm64
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-logo.png?a=commitdiff_plain;h=54ee416050f1d0b3c93d6ec1708f5925e57aa6bf;p=u-boot.git

mkimage: fix segfault on MacOS arm64

mkimage segfaults due to the ASLR mechanism on MacOS arm64

It is required to use _dyld_get_image_vmaddr_slide()
to prevent segfault on MacOS arm64

This patch is based on the discussion
https://github.com/u-boot/u-boot/commit/3b142045e8a7f0ab17b6099e9226296af45967d0

Thanks to Jessica Clarke, Ronny Kotzschmar and ptpt52 github user

Reviewed-by: Jessica Clarke <jrtc27@jrtc27.com>
Signed-off-by: Sergey V. Lobanov <sergey@lobanov.in>
---

diff --git a/tools/imagetool.h b/tools/imagetool.h
index 413e97cbeb..a4105515d8 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -275,11 +275,13 @@ int rockchip_copy_image(int fd, struct image_tool_params *mparams);
  *  b) we need a API call to get the respective section symbols */
 #if defined(__MACH__)
 #include <mach-o/getsect.h>
+#include <mach-o/dyld.h>
 
 #define INIT_SECTION(name)  do {					\
 		unsigned long name ## _len;				\
 		char *__cat(pstart_, name) = getsectdata("__DATA",	\
 			#name, &__cat(name, _len));			\
+		__cat(pstart_, name) += _dyld_get_image_vmaddr_slide(0);\
 		char *__cat(pstop_, name) = __cat(pstart_, name) +	\
 			__cat(name, _len);				\
 		__cat(__start_, name) = (void *)__cat(pstart_, name);	\