Commit 06f2a62c authored by Zhangjin Wu's avatar Zhangjin Wu Committed by Willy Tarreau
Browse files

tools/nolibc: crt.h: initialize stack protector 



As suggested by Thomas, It is able to move the stackprotector
initialization from the assembly _start to the beginning of the new
_start_c(). Let's call __stack_chk_init() in _start_c() as a
preparation.

Suggested-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/lkml/a00284a6-54b1-498c-92aa-44997fa78403@t-8ch.de/


Signed-off-by: default avatarZhangjin Wu <falcon@tinylab.org>
Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
parent d7f16723

tools/include/nolibc/crt.h

+4 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
char **environ __attribute__((weak));

const unsigned long *_auxv __attribute__((weak));



void __stack_chk_init(void);

static void exit(int);



void _start_c(long *sp)
@@ -21,6 +22,9 @@ void _start_c(long *sp) 
	/* silence potential warning: conflicting types for 'main' */

	int _nolibc_main(int, char **, char **) __asm__ ("main");



	/* initialize stack protector */

	__stack_chk_init();



	/*

	 * sp  :    argc          <-- argument count, required by main()

	 * argv:    argv[0]       <-- argument vector, required by main()