?? 44blib_a.s
字號:
; ***********************************************
; * NAME : assembly function library *
; * Version : 07.JUL.2000 *
; ***********************************************
AREA |C$$code|, CODE, READONLY
EXPORT ChangeMemCon
;void ChangeMemCon();
ChangeMemCon
stmfd sp!,{r4-r9} ;Assembler uses the high registers(r4~).
ldmia r0,{r1-r9}
ldr r0,=0x01c80004 ;BANKCON0 Address
stmia r0,{r1-r9}
ldmfd sp!,{r4-r9}
mov pc,lr
EXPORT DisableInterrupt
DisableInterrupt
;This function works only if the processor is in previliged mode.
NOINT EQU 0xc0
mrs r0,cpsr
orr r0,r0,#NOINT
msr cpsr_cxsf,r0
mov pc,lr
EXPORT EnableInterrupt
EnableInterrupt
;This function works only if the processor is in previliged mode.
mrs r0,cpsr
bic r0,r0,#NOINT
msr cpsr_cxsf,r0
mov pc,lr
END
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