Editing Return statement (section)

==Call/return sequences==
{{main|Calling convention}}

A number of possible call/return sequences are possible depending on the hardware instruction set, including the following:
# The <code>CALL</code> instruction pushes address of the <em>next</em> instruction on the stack and branches to the specified address. The <code>RETURN</code> instruction pops the return address from the stack into the instruction pointer and execution resumes at that address. (Examples: [[x86]], [[PDP-11]]) In architectures such as the [[Motorola 96000]], the stack area may be allocated in a separate address space, which is called 'Stack Memory Space',<ref>{{cite web |url=https://www.nxp.com/docs/en/user-guide/DSP96002UM.pdf#page=27 |title=DSP96002 32-BIT DIGITAL SIGNAL PROCESSOR USER'S MANUAL |page=27(3 - 4) |accessdate=2023-12-24}}</ref> distinct from the main memory address space.<ref>{{cite web |url=https://www.nxp.com/docs/en/user-guide/DSP96002UM.pdf#page=50 |title=DSP96002 32-BIT DIGITAL SIGNAL PROCESSOR USER'S MANUAL |page=50(4 - 11) |accessdate=2023-12-24}}</ref> The [[NEC μPD7720]] also features a stack with its own separate address space.<ref>{{Cite web |url=https://www.datasheetarchive.com/datasheet?id=71b7ef54b1f0964332c3db2035de7589c6d319&type=M&term=upd7720 |title=μPD77C20A, 7720A, 77P20 Digital Signal Processor |page=4(3a-4) |accessdate=2023-12-25}}</ref>
# The <code>CALL</code> instruction places address of the <em>next</em> instruction in a register and branches to the specified address. The <code>RETURN</code> instruction sequence  places the return address from the register into the instruction pointer and execution resumes at that address. (Examples: [[IBM System/360]] and successors through [[z/Architecture]], most [[reduced instruction set computing|RISC]] architectures)
# The <code>CALL</code> instruction places address of the <em>next</em> (or <em>current</em>) instruction in the storage location at the call address and branches to the specified address+1. The <code>RETURN</code> instruction sequence branches to the return address by an [[indirection|indirect]] jump to the first instruction of the subroutine. (Examples: [[IBM 1130]], [[SDS 9 Series|SDS 9XX]], [[PDP-8]])