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 --- tools/include/nolibc/crt.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/tools/include/nolibc/crt.h b/tools/include/nolibc/crt.h index 92a2a0478cb1..32e128b0fb62 100644 --- a/tools/include/nolibc/crt.h +++ b/tools/include/nolibc/crt.h @@ -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()