Function __THPHuffDecodeTab

src/dolphin/src/thp/THPDec.c:1275–1511

}

inline s32 __THPHuffDecodeTab(register THPFileInfo *info, register THPHuffmanTab *h)
{
    register s32 code;
    register u32 cnt;
    register s32 cb;
    register u32 increment;
    register s32 tmp;

#define cnt4 code
    asm
    {
        lwz     cnt, info->cnt;
        addi    increment, h, 32;
        lwz     cb, info->currByte;
        addi    cnt4, cnt, 4;
        cmpwi   cnt, 28;
        rlwnm   tmp, cb, cnt4, 27, 31;
        bgt     _notEnoughBits;
        lbzx    code, h, tmp;
        lbzx    increment, increment, tmp;
        cmpwi   code, 0xFF;
        beq     _FailedCheckEnoughBits;
        add     cnt, cnt, increment;
        stw     cnt, info->cnt;
    }
_done:
    return code;

    {
        register u32 maxcodebase;
        register u32 tmp2;

    _FailedCheckEnoughBits:
        maxcodebase = (u32) & (h->maxCode);
        cnt += 5;

        asm {
            li          tmp2, sizeof(s32)*(5);
            li          code, 5;
            add         maxcodebase, maxcodebase, tmp2;
          __WHILE_START:
            cmpwi       cnt, 33;
            slwi        tmp, tmp, 1

            beq         _FCEB_faster;
            rlwnm       increment, cb, cnt, 31, 31;
            lwzu        tmp2, 4(maxcodebase);
            or          tmp, tmp, increment
            addi        cnt, cnt, 1;
            b __WHILE_CHECK;

          _FCEB_faster:
            lwz     increment, info->c;
            li      cnt, 1;
            lwzu    cb, 4(increment);
            lwzu    tmp2, 4(maxcodebase);

            stw     increment, info->c;