Return to ffcopy.s CVS log

Up to [MW Coherent from dump] / coherent / d / PS2_KERNEL / io.286

Annotation of coherent/d/PS2_KERNEL/io.286/ffcopy.s, revision 1.1.1.1

1.1       root        1: ////////
                      2: /
                      3: / void ffcopy(from_fp, to_fp, count)
                      4: / faddr_t from_fp, to_fp;
                      5: / int count;
                      6: /
                      7: / Copy count bytes from from_fp to to_fp.
                      8: /
                      9: / Here is the stack after initial "push bp":
                     10: /
                     11: /      12(bp)  count
                     12: /      10(bp)  FP_SEL(to_fp)
                     13: /      8(bp)   FP_OFF(to_fp)
                     14: /      6(bp)   FP_SEL(from_fp)
                     15: /      4(bp)   FP_OFF(from_fp)
                     16: /      2(bp)   return IP
                     17: /      0(bp)   old bp
                     18: /
                     19: ////////
                     20: 
                     21: ffcopy_:
                     22:        push    bp
                     23:        mov     bp, sp
                     24:        push    es
                     25:        push    di
                     26:        push    ds
                     27:        push    si
                     28: 
                     29:        lds     si, 4(bp)       / from_fp  to DS:SI
                     30:        les     di, 8(bp)       / to_fp to ES:DI
                     31:        mov     cx, 12(bp)      / rep count to CX
                     32:        rep
                     33:        movsb
                     34: 
                     35:        pop     si
                     36:        pop     ds
                     37:        pop     di
                     38:        pop     es
                     39:        pop     bp
                     40:        ret

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