Hi all, Below code is part of powerpc 555 boot up code, could any one explain, wh stack is terminated by "stwu r0,-64(r1)"
addi r1,r11,_ld_stack_end@l # value in linker command file. addis r13,r0,_SDA_BASE_@ha # Initialize r13 to sdata base addi r13,r13,_SDA_BASE_@l # (provided by linker). addis r2,r0,_SDA2_BASE_@ha # Initialize r2 to sdata2 base addi r2,r2,_SDA2_BASE_@l # (provided by linker). addi r0,r0,0 # Clear r0. stwu r0,-64(r1) # Terminate stack.
Expecting replies from you all.