MIPS/GCC Procedure Calling Conventions

Calling Procedure

• Step-1: Pass the arguments:

  • The first four arguments are passed in registers $a0-$a3
  • Remaining arguments are pushed onto the stack
    (in reverse order arg5 is at the top of the stack).

• Step-2: Save caller-saved registers

  • Save registers $t0-$t9 if they contain live values at the call site.

• Step-3: Execute a jal instruction.

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