📄 44binit_s引导程序注释.mht
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<BR>;=BD=AB=D2=AA=CA=B9=D3=C3=B5=C4r0=BC=C4=B4=E6=C6=F7=C8=EB=D5=BB =
<BR>ldr r0,=3D$HandleLabel;load the address of HandleXXX=20
to r0 <BR>ldr r0,[r0] ;load the contents(service routine start =
address) of=20
HandleXXX <BR>str r0,[sp,#4] ;store the contents(ISR) of HandleXXX =
to=20
stack =
<BR>;=BD=AB=B6=D4=D3=A6=B5=C4=D6=D0=B6=CF=BA=AF=CA=FD=CA=D7=B5=D8=D6=B7=C8=
=EB=D5=BB <BR>ldmfd sp!,{r0,pc} ;POP the work register and=20
pc(jump to ISR) =
<BR>;=BD=AB=D6=D0=B6=CF=BA=AF=CA=FD=CA=D7=B5=D8=D6=B7=B3=F6=D5=BB =
=B7=C5=C8=EB=B3=CC=D0=F2=D6=B8=D5=EB=D6=D0 =
=CF=B5=CD=B3=BD=AB=CC=F8=D7=AA=B5=BD=B6=D4=D3=A6=D6=D0=B6=CF=B4=A6=C0=ED=BA=
=AF=CA=FD <BR>MEND=20
<BR>;=D2=BB=B8=F6arm=D3=C9RO,RW,ZI=C8=FD=B8=F6=B6=CF=D7=E9=B3=C9 =
=C6=E4=D6=D0RO=CE=AA=B4=FA=C2=EB=B6=CE=A3=ACRW=CA=C7=D2=D1=BE=AD=B3=F5=CA=
=BC=BB=AF=B5=C4=C8=AB=BE=D6=B1=E4=C1=BF=A3=ACZI=CA=C7=CE=B4=B3=F5=CA=BC=BB=
=AF=B5=C4=C8=AB=BE=D6=B1=E4=C1=BF=A3=A8=B6=D4=D3=DAGNU=B9=A4=BE=DF=20
=B6=D4=D3=A6=B5=C4=B8=C5=C4=EE=CA=C7TEXT ,DATA,BSS=A3=A9bootloader =
<BR>;bootloader=D2=AA=BD=ABRW=B6=CE=B8=B4=D6=C6=B5=BDram=D6=D0=B2=A2=BD=AB=
ZI=B6=CE=C7=E5=C1=E3=20
=
=B1=E0=D2=EB=C6=F7=CA=B9=D3=C3=CF=C2=C1=D0=B6=CE=C0=B4=BC=C7=C2=BC=B8=F7=B6=
=CE=B5=C4=C6=F0=CA=BC=BA=CD=BD=E1=CA=F8=B5=D8=D6=B7 <BR>; =
|Image$$RO$$Base| ; RO=B6=CE=C6=F0=CA=BC=B5=D8=D6=B7 <BR>;=20
|Image$$RO$$Limit| ; RO=B6=CE=BD=E1=CA=F8=B5=D8=D6=B7=BC=D31 <BR>; =
|Image$$RW$$Base| ; RW=B6=CE=C6=F0=CA=BC=B5=D8=D6=B7 <BR>;=20
|Image$$RW$$Limit| ; RW=B6=CE=BD=E1=CA=F8=B5=D8=D6=B7=BC=D31 <BR>; =
|Image$$ZI$$Base| ; ZI=B6=CE=C6=F0=CA=BC=B5=D8=D6=B7 <BR>;=20
|Image$$ZI$$Limit| ; ZI=B6=CE=BD=E1=CA=F8=B5=D8=D6=B7=BC=D31 =
<BR>;=D5=E2=D0=A9=B1=EA=BA=C5=B5=C4=D6=B5=CA=C7=CD=A8=B9=FD=B1=E0=D2=EB=C6=
=F7=B5=C4=C9=E8=B6=A8=C0=B4=C8=B7=B6=A8=B5=C4=20
=
=C8=E7=B1=E0=D2=EB=C8=ED=BC=FE=D6=D0=B6=D4ro-base=BA=CDrw-base=B5=C4=C9=E8=
=B6=A8=A3=AC=C0=FD=C8=E7 ro-base=3D0xc000000 rw-base=3D0xc5f0000=20
<BR><BR><BR>IMPORT |Image$$RO$$Limit| ; End of ROM code (=3Dstart =
of ROM=20
data) <BR>IMPORT |Image$$RW$$Base| ; Base of RAM to initialise =
<BR>IMPORT=20
|Image$$ZI$$Base| ; Base and limit of area <BR>IMPORT =
|Image$$ZI$$Limit| ;=20
to zero initialise <BR><BR>IMPORT Main ; The main entry of mon =
program=20
<BR>;=CF=C2=C3=E6=CE=AA=B4=FA=C2=EB=B6=CE <BR>AREA =
Init,CODE,READONLY =
<BR><BR>;=D2=EC=B3=A3=D6=D0=B6=CF=CA=B8=C1=BF=B1=ED=A3=A8=C3=BF=B8=F6=B1=ED=
=CF=EE=D5=BC4=B8=F6=D7=D6=BD=DA=A3=A9=20
=CF=C2=C3=E6=CA=C7=D6=D0=B6=CF=CF=F2=C1=BF=B1=ED =
=D2=BB=B5=A9=CF=B5=CD=B3=D4=CB=D0=D0=CA=B1=D3=D0=D6=D0=B6=CF=B7=A2=C9=FA =
=BC=B4=CA=B9=D2=C6=D6=B2=C1=CB=B2=D9=D7=F7=CF=B5=CD=B3 =C8=E7linux =
=B4=A6=C0=ED=C6=F7=D2=D1=BE=AD=B0=D1=BF=D8=D6=C6=C8=A8=BD=BB=B8=F8=C1=CB=B2=
=D9=D7=F7=CF=B5=CD=B3 =D2=BB=B5=A9=B7=A2=C9=FA=D6=D0=B6=CF=20
=
=B4=A6=C0=ED=C6=F7=BB=B9=CA=C7=BB=E1=CC=F8=D7=AA=B5=BD=B4=D30x0=BF=AA=CA=BC=
=
<BR>;=D6=D0=B6=CF=CF=F2=C1=BF=B1=ED=D6=D0=C4=B3=B8=F6=D6=D0=B6=CF=B1=ED=CF=
=EE=A3=A8=D2=C0=BE=DD=D6=D0=B6=CF=C0=E0=D0=CD=A3=A9=BF=AA=CA=BC=D6=B4=D0=D0=
=
<BR>;=BE=DF=CC=E5=D6=D0=B6=CF=CF=F2=C1=BF=B2=BC=BE=D6=C7=EB=B2=CE=BF=BCs3=
c44b0 spec=20
=C0=FD=C8=E7 adc=D6=D0=B6=CF=CF=F2=C1=BF=CE=AA =
0x000000c0=CF=C2=C3=E6=B6=D4=D3=A6=B1=ED=D6=D0=B5=DA49=CF=EE=CE=BB=D6=C3 =
=CF=F2=C1=BF=B5=D8=D6=B70x0+4*(49-1)=3D0x000000c0 <BR>ENTRY=20
<BR>;=B0=E2=D7=D3=C9=CF=B5=E7=BA=CD=B8=B4=CE=BB=BA=F3 =
=B3=CC=D0=F2=BF=AA=CA=BC=B4=D3=CE=BB=D3=DA0x0=B4=A6=BF=AA=CA=BC=D6=B4=D0=D0=
=D3=B2=BC=FE=B8=D5=B8=D5=C9=CF=B5=E7=B8=B4=CE=BB=BA=F3 =
=B3=CC=D0=F2=B4=D3=D5=E2=C0=EF=BF=AA=CA=BC=D6=B4=D0=D0=CC=F8=D7=AA=B5=BD=B1=
=EA=BA=C5=CE=AAResetHandler=B4=A6=D6=B4=D0=D0=20
<BR>b ResetHandler ;for debug <BR>b HandlerUndef ;handlerUndef =
<BR>b=20
HandlerSWI ;SWI interrupt handler <BR>b HandlerPabort =
;handlerPAbort <BR>b=20
HandlerDabort ;handlerDAbort <BR>b . ;handlerReserved <BR>b =
HandlerIRQ=20
<BR>b HandlerFIQ <BR>;***IMPORTANT NOTE*** <BR>;If the H/W =
vectored=20
interrutp mode is enabled, The above two instructions should =
<BR>;be=20
changed like below, to work-around with H/W bug of S3C44B0X =
interrupt=20
controller. <BR>; b HandlerIRQ -> subs pc,lr,#4 <BR>; b =
HandlerIRQ=20
-> subs pc,lr,#4 <BR><BR>VECTOR_BRANCH <BR>ldr =
pc,=3DHandlerEINT0 ;mGA=20
H/W interrupt vector table <BR>ldr pc,=3DHandlerEINT1 ; <BR>ldr=20
pc,=3DHandlerEINT2 ; <BR>ldr pc,=3DHandlerEINT3 ; <BR>ldr =
pc,=3DHandlerEINT4567=20
; <BR>ldr pc,=3DHandlerTICK ;mGA <BR>b . <BR>b . <BR>ldr =
pc,=3DHandlerZDMA0=20
;mGB <BR>ldr pc,=3DHandlerZDMA1 ; <BR>ldr pc,=3DHandlerBDMA0 ; =
<BR>ldr=20
pc,=3DHandlerBDMA1 ; <BR>ldr pc,=3DHandlerWDT ; <BR>ldr =
pc,=3DHandlerUERR01 ;mGB=20
<BR>b . <BR>b . <BR>ldr pc,=3DHandlerTIMER0 ;mGC <BR>ldr =
pc,=3DHandlerTIMER1 ;=20
<BR>ldr pc,=3DHandlerTIMER2 ; <BR>ldr pc,=3DHandlerTIMER3 ; =
<BR>ldr=20
pc,=3DHandlerTIMER4 ; <BR>ldr pc,=3DHandlerTIMER5 ;mGC <BR>b . =
<BR>b . <BR>ldr=20
pc,=3DHandlerURXD0 ;mGD <BR>ldr pc,=3DHandlerURXD1 ; <BR>ldr =
pc,=3DHandlerIIC ;=20
<BR>ldr pc,=3DHandlerSIO ; <BR>ldr pc,=3DHandlerUTXD0 ; <BR>ldr=20
pc,=3DHandlerUTXD1 ;mGD <BR>b . <BR>b . <BR>ldr pc,=3DHandlerRTC =
;mGKA <BR>b .=20
; <BR>b . ; <BR>b . ; <BR>b . ; <BR>b . ;mGKA <BR>b . <BR>b . =
<BR>ldr=20
pc,=3DHandlerADC ;mGKB <BR>b . ; <BR>b . ; <BR>b . ; <BR>b . ; =
<BR>b . ;mGKB=20
<BR>b . <BR>b . <BR>;0xe0=3DEnterPWDN <BR>ldr pc,=3DEnterPWDN =
<BR><BR>LTORG=20
=
<BR>;=CF=C2=C3=E6=CA=C7=BE=DF=CC=E5=B5=C4=D6=D0=B6=CF=B4=A6=C0=ED=BA=AF=CA=
=FD=CC=F8=D7=AA=B5=C4=BA=EA=A3=AC=CD=A8=B9=FD=C9=CF=C3=E6=B5=C4$HandlerLa=
bel=B5=C4=BA=EA=B6=A8=D2=E5=D5=B9=BF=AA=BA=F3=CC=F8=D7=AA=B5=BD=B6=D4=D3=A6=
=B5=C4=D6=D0=B6=CF=B4=A6=C0=ED=BA=AF=CA=FD=A3=A8=B6=D4=D3=DA=CF=F2=C1=BF=D6=
=D0=B6=CF=A3=A9=20
<BR>HandlerFIQ HANDLER HandleFIQ <BR>HandlerIRQ HANDLER HandleIRQ=20
<BR>HandlerUndef HANDLER HandleUndef <BR>HandlerSWI HANDLER =
HandleSWI=20
<BR>HandlerDabort HANDLER HandleDabort <BR>HandlerPabort HANDLER=20
HandlePabort <BR><BR>HandlerADC HANDLER HandleADC <BR>HandlerRTC =
HANDLER=20
HandleRTC <BR>HandlerUTXD1 HANDLER HandleUTXD1 <BR>HandlerUTXD0 =
HANDLER=20
HandleUTXD0 <BR>HandlerSIO HANDLER HandleSIO <BR>HandlerIIC =
HANDLER=20
HandleIIC <BR>HandlerURXD1 HANDLER HandleURXD1 <BR>HandlerURXD0 =
HANDLER=20
HandleURXD0 <BR>HandlerTIMER5 HANDLER HandleTIMER5 =
<BR>HandlerTIMER4=20
HANDLER HandleTIMER4 <BR>HandlerTIMER3 HANDLER HandleTIMER3=20
<BR>HandlerTIMER2 HANDLER HandleTIMER2 <BR>HandlerTIMER1 HANDLER=20
HandleTIMER1 <BR>HandlerTIMER0 HANDLER HandleTIMER0 =
<BR>HandlerUERR01=20
HANDLER HandleUERR01 <BR>HandlerWDT HANDLER HandleWDT =
<BR>HandlerBDMA1=20
HANDLER HandleBDMA1 <BR>HandlerBDMA0 HANDLER HandleBDMA0 =
<BR>HandlerZDMA1=20
HANDLER HandleZDMA1 <BR>HandlerZDMA0 HANDLER HandleZDMA0 =
<BR>HandlerTICK=20
HANDLER HandleTICK <BR>HandlerEINT4567 HANDLER HandleEINT4567=20
<BR>HandlerEINT3 HANDLER HandleEINT3 <BR>HandlerEINT2 HANDLER =
HandleEINT2=20
<BR>HandlerEINT1 HANDLER HandleEINT1 <BR>HandlerEINT0 HANDLER =
HandleEINT0=20
<BR><BR><BR>;One of the following two routines can be used for=20
non-vectored interrupt. =
<BR>;=CF=C2=C3=E6=D5=E2=B6=CE=B3=CC=D0=F2=CA=C7=D3=C3=C0=B4=B4=A6=C0=ED=B7=
=C7=CF=F2=C1=BF=D6=D0=B6=CF=A3=AC=BE=DF=CC=E5=C5=D0=B6=CFI_ISPR=D6=D0=B8=F7=
=CE=BB=CA=C7=B7=F1=D6=C31=20
=
=D6=C31=B1=ED=CA=BE=C4=BF=C7=B0=B4=CB=D6=D0=B6=CF=B5=C8=B4=FD=CF=EC=D3=A6=
=A3=A8=C3=BF=B4=CE=D6=BB=C4=DC=D3=D0=D2=BB=CE=BB=D6=C31=A3=A9=A3=AC=B4=D3=
=D7=EE=B8=DF=D3=C5=CF=C8=BC=B6=D6=D0=B6=CF=CE=BB=BF=AA=CA=BC=C5=D0=B6=CF=A3=
=AC=BC=EC=B2=E2=B5=BD=B5=C8=B4=FD=B7=FE=CE=F1 =
<BR>;=D6=D0=B6=CF=BE=CD=BD=ABpc=D6=C3=CE=AA=D6=D0=B6=CF=B7=FE=CE=F1=BA=AF=
=CA=FD=CA=D7=B5=D8=D6=B7=20
<BR>IsrIRQ ;using I_ISPR register. <BR>sub sp,sp,#4 ;reserved for =
PC=20
<BR>stmfd sp!,{r8-r9} <BR><BR>;IMPORTANT CAUTION <BR>;if I_ISPC =
isn't used=20
properly, I_ISPR can be 0 in this routine. <BR><BR>ldr =
r9,=3DI_ISPR <BR>ldr=20
r9,[r9] <BR>mov r8,#0x0 <BR>0 <BR>movs r9,r9,lsr #1 <BR>bcs %F1 =
<BR>add=20
r8,r8,#4 <BR>b %B0 <BR><BR>1 <BR>ldr r9,=3DHandleADC <BR>add =
r9,r9,r8=20
<BR>ldr r9,[r9] <BR>str r9,[sp,#8] <BR>ldmfd sp!,{r8-r9,pc}=20
<BR><BR><BR>;**************************************************** =
<BR>;*=20
START * <BR>;****************************************************=20
<BR>;=B0=E2=D7=D3=C9=CF=B5=E7=BA=CD=B8=B4=CE=BB=BA=F3 =
=B3=CC=D0=F2=BF=AA=CA=BC=B4=D3=CE=BB=D3=DA0x0=D6=B4=D0=D0b ResetHandler =
=B3=CC=D0=F2=B4=D3=CC=F8=D7=AA=B5=BD=D5=E2=C0=EF=D6=B4=D0=D0 =
<BR>;=B0=E5=D7=D3=C9=CF=B5=E7=B8=B4=CE=BB=BA=F3=20
=
=D6=B4=D0=D0=BC=B8=B8=F6=B2=BD=D6=E8=D5=E2=C0=EF=CD=A8=B9=FD=B1=EA=BA=C5=D4=
=DA=D7=A2=CA=CD=D6=D0=BC=D31=A3=AC2=A3=AC3....=B1=EA=CA=BE =
=B1=EA=BA=C5=B1=ED=CA=BE=D6=B4=D0=D0=CB=B3=D0=F2 =
<BR>;1.=BD=FB=D6=B9=BF=B4=C3=C5=B9=B7 =
=C6=C1=B1=CE=CB=F9=D3=D0=D6=D0=B6=CF <BR>ResetHandler=20
<BR>ldr r0,=3DWTCON ;watch dog disable <BR>ldr r1,=3D0x0 <BR>str =
r1,[r0]=20
<BR><BR>ldr r0,=3DINTMSK <BR>ldr r1,=3D0x07ffffff ;all interrupt =
disable=20
<BR>str r1,[r0] =
<BR>;2.=B8=F9=BE=DD=B9=A4=D7=F7=C6=B5=C2=CA=C9=E8=D6=C3pll =
<BR>;=D5=E2=C0=EF=BD=E9=C9=DC=D2=BB=CF=C2=BC=C6=CB=E3=B9=AB=CA=BD=20
<BR>;Fpllo=3D(m*Fin)/(p*2^s) <BR>;m=3DMDIV+8,p=3DPDIV+2,s=3DSDIV=20
<BR>;Fpllo=B1=D8=D0=EB=B4=F3=D3=DA20Mhz=D0=A1=D3=DA66Mhz =
<BR>;Fpllo*2^s=B1=D8=D0=EB=D0=A1=D3=DA170Mhz=20
<BR>;=C8=E7=CF=C2=C3=E6=B5=C4PLLCON=C9=E8=B6=A8=D6=D0=B5=C4M_DIV =
P_DIV S_DIV=CA=C7=C8=A1=D7=D4option.h=D6=D0 <BR>;#elif=20
(MCLK=3D=3D40000000) <BR>;#define PLL_M (0x48) <BR>;#define PLL_P =
(0x3)=20
<BR>;#define PLL_S (0x2) =
<BR>;=CB=F9=D2=D4m=3DMDIV+8=3D80,p=3DPDIV+2=3D5,s=3DSDIV=3D2=20
=
<BR>;=D3=B2=BC=FE=CA=B9=D3=C3=BE=A7=D5=F1=CE=AA10Mhz,=BC=B4Fin=3D10Mhz =
<BR>;Fpllo=3D80*10/5*2^2=3D40Mhz=20
<BR><BR>;**************************************************** =
<BR>;* Set=20
clock control registers *=20
<BR>;**************************************************** <BR>ldr=20
r0,=3DLOCKTIME <BR>ldr r1,=3D800 ; count =3D t_lock * Fin =
(t_lock=3D200us,=20
Fin=3D4MHz) =3D 800 <BR>str r1,[r0] <BR><BR>[ PLLONSTART <BR>ldr =
r0,=3DPLLCON=20
;temporary setting of PLL <BR>ldr=20
r1,=3D((M_DIV<<12)+(P_DIV<<4)+S_DIV) =
;Fin=3D10MHz,Fout=3D40MHz=20
<BR>str r1,[r0] <BR>] <BR><BR>ldr r0,=3DCLKCON <BR>ldr =
r1,=3D0x7ff8 ;All unit=20
block CLK enable <BR>str r1,[r0] =
<BR>;3.=D6=C3=B4=E6=B4=A2=CF=E0=B9=D8=BC=C4=B4=E6=C6=F7=B5=C4=B3=CC=D0=F2=
<BR>;=D5=E2=CA=C7=C9=E8=D6=C3SDRAM,flash=20
ROM =
=B4=E6=B4=A2=C6=F7=C1=AC=BD=D3=BA=CD=B9=A4=D7=F7=CA=B1=D0=F2=B5=C4=B3=CC=D0=
=F2,=C6=AC=D1=A1=B6=A8=D2=E5=B5=C4=B3=CC=D0=F2 <BR>;SMRDATA =
map=D4=DA=CF=C2=C3=E6=B5=C4=B3=CC=D0=F2=D6=D0=B6=A8=D2=E5=20
=
<BR>;SMRDATA=D6=D0=C9=E6=BC=B0=B5=C4=D6=B5=C7=EB=B2=CE=BF=BCmemcfg.s=B3=CC=
=D0=F2 =
<BR>;=BE=DF=CC=E5=BC=C4=B4=E6=C6=F7=B8=F7=CE=BB=BA=AC=D2=E5=C7=EB=B2=CE=BF=
=BCs3c44b0 spec=20
<BR><BR>;**************************************************** =
<BR>;* Set=20
memory control registers *=20
<BR>;**************************************************** <BR>ldr=20
r0,=3DSMRDATA <BR>ldmia r0,{r1-r13} <BR>ldr r0,=3D0x01c80000 =
;BWSCON Address=20
<BR>stmia r0,{r1-r13}=20
<BR><BR>;**************************************************** =
<BR>;*=20
Initialize stacks *=20
<BR>;**************************************************** <BR>ldr =
sp,=20
=3DSVCStack ;Why? <BR>bl InitStacks =
<BR>;5.=C9=E8=D6=C3=C8=B1=CA=A1=D6=D0=B6=CF=B4=A6=C0=ED=BA=AF=CA=FD=20
<BR>;**************************************************** <BR>;* =
Setup IRQ=20
handler * =
<BR>;****************************************************=20
<BR>ldr r0,=3DHandleIRQ ;This routine is needed <BR>ldr =
r1,=3DIsrIRQ ;if there=20
isn't 'subs pc,lr,#4' at 0x18, 0x1c <BR>str r1,[r0] =
<BR>;6.=BD=AB=CA=FD=BE=DD=B6=CE=BF=BD=B1=B4=B5=BDram=D6=D0=20
=BD=AB=C1=E3=B3=F5=CA=BC=BB=AF=CA=FD=BE=DD=B6=CE=C7=E5=C1=E3 =
=CC=F8=C8=EBC=D3=EF=D1=D4=B5=C4main=BA=AF=CA=FD=D6=B4=D0=D0 =
=B5=BD=D5=E2=B2=BD=BD=E1=CA=F8bootloader=B3=F5=B2=BD=D2=FD=B5=BC=BD=E1=CA=
=F8=20
<BR>;******************************************************** =
<BR>;* Copy=20
and paste RW data/zero initialized data *=20
<BR>;******************************************************** =
<BR>LDR r0,=20
=3D|Image$$RO$$Limit| ; Get pointer to ROM data <BR>LDR r1,=20
=3D|Image$$RW$$Base| ; and RAM copy <BR>LDR r3, =
=3D|Image$$ZI$$Base| <BR>;Zero=20
init base =3D> top of initialised data <BR><BR>CMP r0, r1 ; =
Check that=20
they are different <BR>BEQ %F1 <BR>0 <BR>CMP r1, r3 ; Copy init =
data=20
<BR>LDRCC r2, [r0], #4 ;--> LDRCC r2, [r0] + ADD r0, r0, #4 =
<BR>STRCC=20
r2, [r1], #4 ;--> STRCC r2, [r1] + ADD r1, r1, #4 <BR>BCC %B0 =
<BR>1=20
<BR>LDR r1, =3D|Image$$ZI$$Limit| ; Top of zero init segment =
<BR>MOV r2, #0=20
<BR>2 <BR>CMP r3, r1 ; Zero init <BR>STRCC r2, [r3], #4 <BR>BCC =
%B2=20
<BR><BR>[ :LNOT:THUMBCODE <BR>BL Main ;Don't use main() because=20
......;=CC=F8=C8=EBmain=BA=AF=CA=FD <BR>B . <BR>] <BR><BR>[ =
THUMBCODE ;for start-up code for=20
Thumb mode <BR>orr lr,pc,#1 <BR>bx lr <BR>CODE16 <BR>bl Main =
;Don't use=20
main() because ......;=CC=F8=C8=EBmain=BA=AF=CA=FD <BR>b . =
<BR>CODE32 <BR>] =
<BR>;4.=B3=F5=CA=BC=BB=AF=B8=F7=C4=A3=CA=BD=CF=C2=B5=C4=D5=BB=D6=B8=D5=EB=
=20
<BR>;**************************************************** <BR>;* =
The=20
function for initializing stack *=20
<BR>;**************************************************** =
<BR>InitStacks=20
<BR>;Don't use DRAM,such as stmfd,ldmfd...... <BR>;SVCstack is =
initialized=20
before <BR>;Under toolkit ver 2.50, 'msr cpsr,r1' can be used =
instead of=20
'msr cpsr_cxsf,r1' <BR><BR>mrs r0,cpsr <BR>bic r0,r0,#MODEMASK =
<BR>orr=20
r1,r0,#UNDEFMODE|NOINT <BR>msr cpsr_cxsf,r1 ;UndefMode <BR>ldr=20
sp,=3DUndefStack <BR><BR>orr r1,r0,#ABORTMODE|NOINT <BR>msr =
cpsr_cxsf,r1=20
;AbortMode <BR>ldr sp,=3DAbortStack <BR><BR>orr =
r1,r0,#IRQMODE|NOINT <BR>msr=20
cpsr_cxsf,r1 ;IRQMode <BR>ldr sp,=3DIRQStack <BR><BR>orr=20
r1,r0,#FIQMODE|NOINT <BR>msr cpsr_cxsf,r1 ;FIQMode <BR>ldr =
sp,=3DFIQStack=20
<BR><BR>bic r0,r0,#MODEMASK|NOINT <BR>orr r1,r0,#SVCMODE <BR>msr=20
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