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The stack frame usually includes at least the following items (in push order): the arguments (parameter values) passed to the routine (if any); the return address back to the routine's caller (e.g. in the DrawLine stack frame, an address into DrawSquare's code); and; space for the local variables of the routine (if any).
The stack segment contains the call stack, a LIFO structure, typically located in the higher parts of memory. A "stack pointer" register tracks the top of the stack; it is adjusted each time a value is "pushed" onto the stack. The set of values pushed for one function call is termed a "stack frame". A stack frame consists at minimum of a return ...
SS:SP (SS is Stack Segment, SP is Stack Pointer) points to the address of the top of the stack, i.e. the most recently pushed byte. SS:BP (SS is Stack Segment, BP is Stack Frame Pointer) points to the address of the top of the stack frame, i.e. the base of the data area in the call stack for the currently active subprogram.
In particular, how the stack frame is restored so the caller may continue after the callee has finished. Whether and how metadata describing the arguments is passed; Where the previous value of the frame pointer is stored, which is used to restore the stack frame when the subroutine ends. Options include within the call stack, or in a specific ...
POD return values 33–64 bits in size are returned via the EAX:EDX registers. Non-POD return values or values larger than 64-bits, the calling code will allocate space and passes a pointer to this space via a hidden parameter on the stack. The called function writes the return value to this address. Stack aligned on 4-byte boundary. stdcall ...
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