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tools/nolibc: crt.h: initialize stack protector

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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: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/lkml/a00284a6-54b1-498c-92aa-44997fa78403@t-8ch.de/
Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Zhangjin Wu 2023-07-16 02:23:21 +08:00 committed by Willy Tarreau
parent d7f16723d3
commit 06f2a62c81
1 changed files with 4 additions and 0 deletions
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4
tools/include/nolibc/crt.h
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@ -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()