lecture 8: compiler II

Return Sequence
1. The callee stores the return value near the parameters. Note that this address can be determined by the caller using the old (soon-to-be-restored) sp.
2. The callee restores sp and the registers.
3. The callee jumps to the return address.
Note that varagrs are supported.
Variable-Length Data on the Stack
There are two flavors of variable-length data.
? Data obtained by malloc/new have hard to determine lifetimes and are stored in the heap instead of the stack.
? Data, such as arrays with bounds determined by the parameters are still stack like in their lifetimes (if A calls B, these variables of A are allocated before and released after the corresponding variables of B).
It
Return Sequence
1. The callee stores the return value near the parameters. Note that this address can be determined by the caller using the old (soon-to-be-restored) sp.
2. The callee restores sp and the registers.
3. The callee jumps to the return address.
Note that varagrs are supported.
Variable-Length Data on the Stack
There are two flavors of variable-length data.
? Data obtained by malloc/new have hard to determine lifetimes and are stored in the heap instead of the stack.
? Data, such as arrays with bounds determined by the parameters are still stack like in their lifetimes (if A calls B, these variables of A are allocated before and released after the corresponding variables of B).
It