/************************************** * $Id: i2c2.s,v 1.3 1999/10/30 01:42:11 ecueva Exp $ * * copyright @ Motorola, 1999 * **************************************/ #ifdef GCC_REGISTERS #include "../../gcc_registers.h" #endif /*GCC_REGISTERS */ /********************************************************** * 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 * * lwbrx r3,r4,r5 */ lwbrx r3,r4,r3 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: stwbrx r5, r4, r3 sync bclr 20,0