Commit ed6c0d89 authored Apr 17, 2023 by Thomas Weißschuh Committed by Paul E. McKenney Jun 09, 2023

tools/nolibc: arm: add stackprotector support



Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

parent c1e30f7d

tools/include/nolibc/arch-arm.h

+6 −1

Original line number	Diff line number	Diff line
		@@ -199,10 +199,15 @@ struct sys_stat_struct {
		char **environ __attribute__((weak));
		const unsigned long *_auxv __attribute__((weak));

		#define __ARCH_SUPPORTS_STACK_PROTECTOR

		/* startup code */
		void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void)
		void __attribute__((weak,noreturn,optimize("omit-frame-pointer"),no_stack_protector)) _start(void)
		{
		__asm__ volatile (
		#ifdef NOLIBC_STACKPROTECTOR
		"bl __stack_chk_init\n" /* initialize stack protector */
		#endif
		"pop {%r0}\n" /* argc was in the stack */
		"mov %r1, %sp\n" /* argv = sp */

tools/testing/selftests/nolibc/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -83,6 +83,7 @@ CFLAGS_STKP_i386 = $(CFLAGS_STACKPROTECTOR)
		CFLAGS_STKP_x86_64 = $(CFLAGS_STACKPROTECTOR)
		CFLAGS_STKP_x86 = $(CFLAGS_STACKPROTECTOR)
		CFLAGS_STKP_arm64 = $(CFLAGS_STACKPROTECTOR)
		CFLAGS_STKP_arm = $(CFLAGS_STACKPROTECTOR)
		CFLAGS_s390 = -m64
		CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 \
		$(call cc-option,-fno-stack-protector) \