On 1/27/25 05:15, 1425075683@qq.com wrote:

From: Liya Huang 1425075683@qq.com

Refer to the commit a3c101a61348 ("examples: fix building on arm64") fix for arm32. crt0.S does not even build with CONFIG_API=y, CONFIG_EXAMPLES=y:

 examples/api/crt0.S: Assembler messages:
 examples/api/crt0.S:32: Error: lo register required -- `ldr ip,=search_hint'
 examples/api/crt0.S:33: Error: lo register required -- `str sp,[ip]'
 examples/api/crt0.S:39: Error: lo register required -- `ldr ip,=syscall_ptr'
 examples/api/crt0.S:40: Error: lo register required -- `ldr pc,[ip]'
 make[2]: *** [scripts/Makefile.build:292：examples/api/crt0.o] Error 1

Use valid register names and instructions.

Hello Liva,

Thank you for reporting the issue that you experience and suggesting a patch.

I am not able to reproduce your problem using

make qemu_arm_defconfig make menuconfig # to add CONFIG_API=y, CONFIG_EXAMPLES=y export CROSS_COMPILE=arm-linux-gnueabi- make

https://developer.arm.com/documentation/den0013/d/Application-Binary-Interfa... lists IP, SP, PC as aliases for registers R12, R13, R15.

I am using gcc 4.2.0 and binutils 2.43 on Ubuntu 25.04.

Could you, please, share some detail on how to reproduce your issue:

* version of U-Boot (commit in git) * operating system and architecture * installed version of gcc and binutils * used defconfig * used commands for building

Best regards

Heinrich

Signed-off-by: Liya Huang 1425075683@qq.com

examples/api/crt0.S | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/examples/api/crt0.S b/examples/api/crt0.S index d2a97557817..d33e1c4aa4d 100644 --- a/examples/api/crt0.S +++ b/examples/api/crt0.S @@ -29,15 +29,17 @@ syscall: .text .globl _start _start:

• ldr ip, =search_hint
• str sp, [ip]

• ldr r0, =search_hint

• mov r1, sp

• str r1, [r0] b main

  .globl syscall syscall:

• ldr ip, =syscall_ptr
• ldr pc, [ip]

• ldr r0, =syscall_ptr

• ldr r0, [r0]

• bx r0

  #elif defined(CONFIG_ARM64)