Hello experts, I am reading the Systeam V ABI for PowerPC and have a question about the LR save word in the stack frame. The ABI says: > Before a function calls another function, it shall save the contents of t= he link register at the time the function > was entered in the LR save word of its caller=92s stack frame and shall e= stablish its own stack frame. Here is my question: Why should LR save word be saved in the caller's stack frame? Why not just use the callee's stack frame? v.c.