GNU Arm Embedded Toolchain

Error: cannot honor width suffix -- `rsb r0,#0'

Asked by Mallikarjun

Hi,
I get this error when i compile following code:

 .cpu cortex-m0
 .fpu softvfp
 .thumb
 .text
 .align 2
 .global rsb_test
 .thumb
 .thumb_func
 .type rsb_test, %function
rsb_test:
 rsb r0, #0

The command i used is:
./arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb rsb_bug.S

Anything wrong with the options i have used? Or is it known bug?

Thanks for your time.

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GNU Arm Embedded Toolchain Edit question
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Solved by:
Terry Guo
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Best Terry Guo (terry.guo) said : 		#1

It could be a missing part in assembler to support rsb instruction for non-UAL assembly code. Suggest you to use "neg r0, r0" instead. They use same instruction encoding.

Revision history for this message
Mallikarjun (mallikarjun-gouda) said : 		#2

Thanks Terry Guo, that solved my question.