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