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Procedure call instructions

Procedure call: jump-and-link instruction

jal x1, ProcedureLabel
  • Executed by caller
  • Puts address of instruction after this one in x1 (ra) (return address)
  • Jumps to target address of ProcedureLabel

Procedure return: jump-and-link register instruction

jalr x0, 0(x1)
  • Executed by callee
  • Like jal, but jumps to 0 + address in x1 (ra)
  • No return address (x0 cannot be changed)
  • Can also be used for unconditional jumps
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pdf

owner: pavestonelaboringuntitled - (no access) - 04 Instructions-language of the computer.pdf, p54


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