MIPS/GCC Procedure Calling Conventions (cont.)

On return from a call

• Step-1: Put returned values in registers $v0, [$v1].  (if values are returned)

• Step-2: Restore callee-saved registers.

  • Restore $fp and other saved registers. [$ra, $s0 - $s7]

• Step-3: Pop the stack

  • Add the frame size to $sp. addiu $sp, $sp, <frame-size>

• Step-4: Return

  • Jump to the address in $ra.  jr $ra

Previous slide

Next slide

Back to first slide

View graphic version