Use of _disable_interrupts intrinsic causes compiler to emit call to function _get_CPSR, which does not exist

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    • Type: Bug
    • Resolution: Won't Fix
    • Priority: Not Prioritized
    • Code Generation Tools
    • CODEGEN-11433
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      https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/Arm-based-microcontrollers---internal/f/1042/t/1263171
      Show
      https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/Arm-based-microcontrollers---internal/f/1042/t/1263171
    • ARMCLANG_2.1.3.LTS
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       _get_CPSR exists in ti_compatibility.h, but ti_compatibility.h was meant to ensure backward compatibility source code ported to tiarmclang with targets supported by the TI Arm proprietary compiler (armcl), which doesn't include Cortex-M33.

      Separate issue filed to address lack of documentation on enabling/disabling interrupts on Arm targets.
      Show
       _get_CPSR exists in ti_compatibility.h, but ti_compatibility.h was meant to ensure backward compatibility source code ported to tiarmclang with targets supported by the TI Arm proprietary compiler (armcl), which doesn't include Cortex-M33. Separate issue filed to address lack of documentation on enabling/disabling interrupts on Arm targets.

      The attached file.c has these line ...

      #include <ti_compatibility.h>

void fxn()
{
    _disable_interrupts();
}

      Build it ...

      $ tiarmclang @options.txt -S file.c

      Inspect the resulting assembly file ...

      $ findstr _get_CPSR file.S
        bl      _get_CPSR
        .asciz  "_get_CPSR"                     @ string offset=203

      The function _get_CPSR is not defined in the compiler RTS library, or anywhere else. This results in an error when linking.

            Assignee:
            TI User
            Reporter:
            TI User
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              Created:
              Updated:
              Resolved:

                Connection: Intermediate to External PROD System
                EXTSYNC-4181 - Use of _disable_interrupts intrinsi...
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