Link register: Revision history

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9 September 2025

  • curprev 03:3903:39, 9 September 2025‎ Rolf talk contribs‎ 354 bytes +354‎ Created page with "The Link register is a register which can hold the return address when calling a subroutine. The term link register is mostly used in the ARM world, in other architectures it is called RA (return address). Basically a call instruction: BL Sub // LR = PC, PC = &Sub and a return instruction BX LR // PC = LR work together as a team."
Retrieved from "https://kb.segger.com/Link_register"