Return to unpack.s CVS log

Up to [Research Unix] / researchv8dc / sys / pcs

Annotation of researchv8dc/sys/pcs/unpack.s, revision 1.1

1.1     ! root        1: /*
        !             2:  * unpack comet microcode and patch bits:
        !             3:  * it's too much trouble to write this in C
        !             4:  *
        !             5:  * unpack(packed, unpacked, nwords, nbits)
        !             6:  *
        !             7:  * copies nwords nbits-bit things from packed
        !             8:  * into nwords 32-bit things in unpacked
        !             9:  */
        !            10: 
        !            11:        .globl  _unpack
        !            12: _unpack:
        !            13:        .word   0
        !            14:        movl    8(ap),r0        # to
        !            15:        clrl    r1              # bit offset
        !            16:        movl    12(ap),r2       # word count
        !            17:        bneq    0f
        !            18:         ret
        !            19: 0:     movl    16(ap),r3       # bit size
        !            20:        bneq    1f
        !            21:         ret
        !            22: 1:
        !            23:        extzv   r1,r3,*4(ap),(r0)+
        !            24:        addl2   r3,r1
        !            25:        sobgtr  r2,1b
        !            26:        ret

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.