📄 引导程序中伪指令详解.mht
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; <FONT=20
size=3D3><STRONG> =CB=C4=A1=A2MACRO</STRONG></FONT> =
</DIV>
<DIV><BR> =20
$HandlerLabel HANDLER $HandleLabel=20
<BR> =
$HandlerLabel=20
<BR> sub =
sp,sp,#4=20
;decrement sp(to store jump address)=20
<BR> stmfd =
sp!,{r0}=20
;PUSH the work register to stack=20
<BR> ldr=20
r0,=3D$HandleLabel;load the address of HandleXXX to r0 =
<BR> ldr =
r0,[r0]=20
;load the contents(service routine start address) of =
HandleXXX=20
<BR> str =
r0,[sp,#4]=20
;store the contents(ISR) of HandleXXX to stack=20
<BR> ldmfd=20
sp!,{r0,pc} ;POP the work register and pc(jump to ISR) =
<BR> MEND =
</DIV>
<DIV> </DIV>
=
<DIV>//MACRO=A1=AD=A1=ADMEND<BR>=B9=A6=C4=DC=A3=BA=B1=EA=D6=BE=D2=BB=CF=C2=
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