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SPARC Assembly/Subroutines

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SPARC Assembly

This page is going to discuss the use of subroutines in SPARC Assembly.

Saving Registers

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Subroutine Linkage

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A typical (non-leaf) subroutine has a procedure prologue and epilogue something like this:[1][2] 

do_something_useful:
    ; prologue:
    save %sp, -16, %sp

    ; main body
    ; ... perform function ...

    ; leave return value, if any, in register %i0

    ; epilogue:
    ret
    restore

Return Values

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Further reading

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  1. ↑ Peter Magnusson. "Understanding stacks and registers in the Sparc architecture(s)".
  2. ↑ Mark Smotherman. "SPARC Subroutines".
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