分散加载文件scf与sarm初始化是同一功能吗？？？

只看该作者 · 2008-3-27 10:55

看到zlg摸版都用scf文件加载程序，而我看了别的arm芯片用如下程序，
功能应该一样吧，各位？谢谢
**********************************************
    adr    r0, ResetEntry
    ldr    r2, BaseOfROM
    cmp    r0, r2
    ldreq    r0, TopOfROM
    beq    InitRam
    ldr r3, TopOfROM
0
    ldmia    r0!, {r4-r7}
    stmia    r2!, {r4-r7}
    cmp    r2, r3
    bcc    %B0

    sub    r2, r2, r3
    sub    r0, r0, r2

InitRam
    ldr    r2, BaseOfBSS
    ldr    r3, BaseOfZero
0
    cmp    r2, r3
    ldrcc    r1, [r0], #4
    strcc    r1, [r2], #4
    bcc    %B0

    mov    r0,    #0
    ldr    r3,    EndOfBSS
1
    cmp    r2,    r3
    strcc    r0, [r2], #4
    bcc    %B1