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Error generation on accessing Special purpose register.

nancy

I am trying to write on a register using the following command:

asm("ldr r0, =0x00");

asm("MSR ICC_SEIEN_EL1, r0") ;

and getting this error:

tmp/ccnn8Apc.s: Assembler messages:

/tmp/ccnn8Apc.s:93787: Error: selected processor does not support requested special purpose register -- `msr ICC_SEIEN_EL1,r0'

Can somebody help me in finding out the root cause of this issue.

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  • 0 in reply to Chris Shore

    Hi Chris,

    Initially I was using MSR , but got error as explained above. But now I am using the following code:

    asm("ldr r0, =0xFF");

    asm("MCR p15,0,r0,c12,c13,0") ;

    asm("MRC p15,0,r0,c12,c13,0"); the format is as defined in the Manual for ICC_SEI register for 32 bit architecture.

    This one is not working either.

Reply
  • 0 in reply to Chris Shore

    Hi Chris,

    Initially I was using MSR , but got error as explained above. But now I am using the following code:

    asm("ldr r0, =0xFF");

    asm("MCR p15,0,r0,c12,c13,0") ;

    asm("MRC p15,0,r0,c12,c13,0"); the format is as defined in the Manual for ICC_SEI register for 32 bit architecture.

    This one is not working either.

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