“Assembly Language”, 3rd Edition by Wang Shuang Chapter 10: CALL and RET Instructions Checkpoint 10.3 (Page 193) What is the value in ax after executing the following program? Memory Address Machine Code Assembly Instruction 1000:0 b8 00 00 mov ax, 0 1000:3 9A 09 00 00 10 call far ptr s 1000:8 40 inc ax … Read more
ret and retf Instructions <span>call</span> and <span>ret</span> are transfer instructions that control the program flow by modifying the IP (Instruction Pointer) or simultaneously modifying both the CS (Code Segment Register) and IP. These instructions are typically used together to implement the design of subroutines (functions). ret Instruction <span>ret</span> (return) instruction pops data from the stack … Read more
Course 3: Stage 2 – Core Instructions and Programming Topic：Function Calls and Stack Operations, ARMv8 Calling Conventions, Bare-Metal Programming Practice 3.1 Basics of Function Calls Core Concepts： BL Instruction： <span>BL label</span>：Jump to<span>label</span> to execute, while saving the return address (the address of the next instruction) to<span>LR</span> (X30). After the function call, return using<span>RET</span> (<span>RET</span> is … Read more