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function call in branch instruction

Hermann Andresen

Hello,
i'm using a inline assembler instruction like:

void my_svc_handler(unsigned int * svc_args)
{ .....
}

void SVC_Handler(void)
{ __asm{

.......

B my_svc_handler
}

The problem i have is, that the uVision compiler will not accept the function name "my_svc_handler" after the branch , instruction and comes up with

..\main.c(121): error: #114: label "my_svc_handler" was referenced but not defined

Does anybody know how to correct the syntax that it will work?

Thanks in advance.

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    Hello Scott,
    thanks for your help. It's working now. Was already looking into the instr. Manual, but now i see the difference between
    B loopA // Branch to loopA
    and
    BL func // Branch with link/call to function
    I found this in the CortexM3InstructionSet Examples.

    regards,
    Hermann

Reply
  • 0

    Hello Scott,
    thanks for your help. It's working now. Was already looking into the instr. Manual, but now i see the difference between
    B loopA // Branch to loopA
    and
    BL func // Branch with link/call to function
    I found this in the CortexM3InstructionSet Examples.

    regards,
    Hermann

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