/************************************** * * copyright @ Motorola, 1999 * * * This file contains two commonly used * lower level utility routines. * * The utility routines are also in other * Kahlua device driver libraries. The * need to be linked in only once. **************************************/ #include #include /********************************************************** * function: load_runtime_reg * * input: r3 - value of eumbbar * r4 - register offset in embedded utility space * * output: r3 - register content **********************************************************/ .text .align 2 .global load_runtime_reg load_runtime_reg: xor r5,r5,r5 or r5,r5,r3 /* save eumbbar */ lwbrx r3,r4,r5 sync bclr 20, 0 /**************************************************************** * function: store_runtime_reg * * input: r3 - value of eumbbar * r4 - register offset in embedded utility space * r5 - new value to be stored * ****************************************************************/ .text .align 2 .global store_runtime_reg store_runtime_reg: xor r0,r0,r0 stwbrx r5, r4, r3 sync bclr 20,0