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Invalid operand for instruction for armv7-a architecture

pshetty

Hi,

I am seeing the below errors when I try to compile my code in Arm Compiler 6. Can you please help me to resolve this issue? 

error: invalid operand for instruction
MRS r0, PSP

error: invalid operand for instruction
MRS r0, MSP

Environment are below:

CORE = cortex-m4
FPU = fpv4-sp-d16
ARCH = armv7-a

Pradeep

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  • 0 Arm Employee Badge in reply to pshetty

    Those symbols are defined in the linker script.

    You would need to #define them to match the equivalent symbols generated by scatterloading, such as:

    #define _bss_start Image$$ZI_REGION$$Base

    Where ZI_REGION is the name given to the execution region in your scatter file.

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  • 0 Arm Employee Badge in reply to pshetty

    Those symbols are defined in the linker script.

    You would need to #define them to match the equivalent symbols generated by scatterloading, such as:

    #define _bss_start Image$$ZI_REGION$$Base

    Where ZI_REGION is the name given to the execution region in your scatter file.

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