Commit ca2d0437 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Paul E. McKenney
Browse files

tools/nolibc: loongarch: add stackprotector support 



Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent ed6c0d89

tools/include/nolibc/arch-loongarch.h

+6 −1
Original line number Diff line number Diff line
@@ -149,6 +149,8 @@ 
char **environ __attribute__((weak));

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



#define __ARCH_SUPPORTS_STACK_PROTECTOR



#if __loongarch_grlen == 32

#define LONGLOG      "2"

#define SZREG        "4"
@@ -170,9 +172,12 @@ const unsigned long *_auxv __attribute__((weak)); 
#endif



/* 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

		REG_L        " $a0, $sp, 0\n"         /* argc (a0) was in the stack                          */

		LONG_ADDI    " $a1, $sp, "SZREG"\n"   /* argv (a1) = sp + SZREG                              */

		LONG_SLL     " $a2, $a0, "LONGLOG"\n" /* envp (a2) = SZREG*argc ...                          */

tools/testing/selftests/nolibc/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -84,6 +84,7 @@ CFLAGS_STKP_x86_64 = $(CFLAGS_STACKPROTECTOR) 
CFLAGS_STKP_x86 = $(CFLAGS_STACKPROTECTOR)

CFLAGS_STKP_arm64 = $(CFLAGS_STACKPROTECTOR)

CFLAGS_STKP_arm = $(CFLAGS_STACKPROTECTOR)

CFLAGS_STKP_loongarch = $(CFLAGS_STACKPROTECTOR)

CFLAGS_s390 = -m64

CFLAGS  ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 \

		$(call cc-option,-fno-stack-protector) \