What is Stack frame?
The area reserved on the stack each time a function is called. It holds the return address, saved registers and local variables and is freed when the function returns.
Field: ISA & Assembly
Stack frame in the explanations
If it also avoids callee-saved registers, it does not even need a stack frame.
A function that calls no other functions (a leaf function) …Subtracting 16 from sp makes the 16 bytes between the new sp and the old one this function's stack frame, where the return address, saved registers and local variables can be kept.
What is the purpose of executing "addi sp, sp, -16" at the …Line 1 subtracts 16 from sp to allocate a stack frame, line 2 writes the return address ra into it, and line 3 writes the callee-saved s0.
The code above is the start (prologue) of a function. What …
Questions that mention Stack frame (5)
- A function that calls no other functions (a leaf function) often does not need to save ra on the stack. Why?
- What is the purpose of executing "addi sp, sp, -16" at the start of a RISC-V function?
- The code above is the start (prologue) of a function. What does it do?
- What is the effect of applying tail-call optimization to the final recursive call in the function above?
- Where is a non-static local (automatic) variable declared inside a C function placed at run time?
Related terms
Return address Leaf function Stack pointer Addressing mode Application binary interface (ABI) Assembler Branch delay slot Callee-saved register Caller-saved register Calling convention