We have a problem with arguments passing in memory.
The caller puts the arguments in memory relative to the sp:
add sp, 4 // allocate space for the argument. stack grows up
store r1, (sp-4) // store the argument on the stack
call xxx// call the function.
In xxx the result code looks like:
load (sp-4), r1 // load the argument from the stack.
The problem is that the 'call' instruction pushes the return address
to the stack and
increments the sp by 4 so when the callee tries to access the memory
it does not get
to the correct location.
How can I tell GCC that that the callee should load from the original
offset + 4?
Thanks.
