source:
trunk/minix/lib/i86/em/em_csb2.s@
20
| Last change on this file since 20 was 9, checked in by , 14 years ago | |
|---|---|
| File size: 318 bytes | |
| Line | |
|---|---|
| 1 | .define .csb2 |
| 2 | |
| 3 | .text |
| 4 | .csb2: |
| 5 | !bx, descriptor address |
| 6 | !ax, index |
| 7 | mov dx,(bx) |
| 8 | mov cx,2(bx) |
| 9 | 1: |
| 10 | add bx,#4 |
| 11 | dec cx |
| 12 | jl 4f |
| 13 | cmp ax,(bx) |
| 14 | jne 1b |
| 15 | mov bx,2(bx) |
| 16 | 2: |
| 17 | test bx,bx |
| 18 | jnz 3f |
| 19 | ECASE = 20 |
| 20 | .extern .fat |
| 21 | mov ax,#ECASE |
| 22 | push ax |
| 23 | jmp .fat |
| 24 | 3: |
| 25 | jmp (bx) |
| 26 | 4: |
| 27 | mov bx,dx |
| 28 | jmp 2b |
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