PING^1 [PATCH] testsuite: 'b' instruction can't do long enough jumps

[Torbjorn SVENSSON <torbjorn.svensson@foss.st.com>]

Hi,

Ping: https://gcc.gnu.org/pipermail/gcc-patches/2022-September/601829.html

Kind regards,
Torbjörn

On 2022-09-19 18:30, Torbjörn SVENSSON wrote:
> After moving the testglue in commit 9d503515cee, the jump to exit and
> abort is too far for the 'b' instruction on Cortex-M0. As most of the
> C code would generate a 'bl' instruction instead of a 'b'
> instruction, lets do the same for the inline assembler.
> 
> The error seen without this patch:
> 
> /tmp/cccCRiCl.o: in function `main':
> stack-protector-1.c:(.text+0x4e): relocation truncated to fit: R_ARM_THM_JUMP11 against symbol `__wrap_exit' defined in .text section in gcc_tg.o
> stack-protector-1.c:(.text+0x50): relocation truncated to fit: R_ARM_THM_JUMP11 against symbol `__wrap_abort' defined in .text section in gcc_tg.o
> collect2: error: ld returned 1 exit status
> 
> gcc/testsuite/ChangeLog:
> 
>          * gcc/testsuite/gcc.target/arm/stack-protector-1.c: Use 'bl'
> 	instead of 'b' instruction.
> 	* gcc/testsuite/gcc.target/arm/stack-protector-3.c: Likewise.
> 
> Co-Authored-By: Yvan ROUX  <yvan.roux@foss.st.com>
> Signed-off-by: Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
> ---
>   gcc/testsuite/gcc.target/arm/stack-protector-1.c | 4 ++--
>   gcc/testsuite/gcc.target/arm/stack-protector-3.c | 2 +-
>   2 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/gcc/testsuite/gcc.target/arm/stack-protector-1.c b/gcc/testsuite/gcc.target/arm/stack-protector-1.c
> index 8d28b0a847c..3f0ffc9c3f3 100644
> --- a/gcc/testsuite/gcc.target/arm/stack-protector-1.c
> +++ b/gcc/testsuite/gcc.target/arm/stack-protector-1.c
> @@ -56,8 +56,8 @@ asm (
>   "	ldr	r1, [sp, #4]\n"
>   	CHECK (r1)
>   "	mov	r0, #0\n"
> -"	b	exit\n"
> +"	bl	exit\n"
>   "1:\n"
> -"	b	abort\n"
> +"	bl	abort\n"
>   "	.size	main, .-main"
>   );
> diff --git a/gcc/testsuite/gcc.target/arm/stack-protector-3.c b/gcc/testsuite/gcc.target/arm/stack-protector-3.c
> index b8f77fa2309..2f710529b8f 100644
> --- a/gcc/testsuite/gcc.target/arm/stack-protector-3.c
> +++ b/gcc/testsuite/gcc.target/arm/stack-protector-3.c
> @@ -26,7 +26,7 @@ asm (
>   "	.type	__stack_chk_fail, %function\n"
>   "__stack_chk_fail:\n"
>   "	movs	r0, #0\n"
> -"	b	exit\n"
> +"	bl	exit\n"
>   "	.size	__stack_chk_fail, .-__stack_chk_fail"
>   );
>