| From | "Paul E. McKenney" <> | Subject | [PATCH v2 nolibc 23/53] tools/nolibc: mips: add stackprotector support | Date | Mon, 12 Jun 2023 13:44:44 -0700 |
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From: Thomas Weißschuh <linux@weissschuh.net>
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> --- tools/include/nolibc/arch-mips.h | 8 +++++++- tools/testing/selftests/nolibc/Makefile | 1 + 2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/include/nolibc/arch-mips.h b/tools/include/nolibc/arch-mips.h index 8822f150e72f..65c19ccc7f9d 100644 --- a/tools/include/nolibc/arch-mips.h +++ b/tools/include/nolibc/arch-mips.h @@ -179,14 +179,20 @@ struct sys_stat_struct { char **environ __attribute__((weak)); const unsigned long *_auxv __attribute__((weak)); +#define __ARCH_SUPPORTS_STACK_PROTECTOR + /* startup code, note that it's called __start on MIPS */ -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 ( /*".set nomips16\n"*/ ".set push\n" ".set noreorder\n" ".option pic0\n" +#ifdef NOLIBC_STACKPROTECTOR + "jal __stack_chk_init\n" /* initialize stack protector */ + "nop\n" /* delayed slot */ +#endif /*".ent __start\n"*/ /*"__start:\n"*/ "lw $a0,($sp)\n" /* argc was in the stack */ diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index ab6e7c0c2494..6d660d922240 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -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_mips = $(CFLAGS_STACKPROTECTOR) CFLAGS_STKP_loongarch = $(CFLAGS_STACKPROTECTOR) CFLAGS_s390 = -m64 CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 \ -- 2.40.1
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