source:
trunk/minix/lib/i86/em/em_dup.s@
10
| Last change on this file since 10 was 9, checked in by , 15 years ago | |
|---|---|
| File size: 177 bytes | |
| Rev | Line | |
|---|---|---|
| [9] | 1 | .define .dup |
| 2 | ||
| 3 | ! #bytes in cx | |
| 4 | .text | |
| 5 | .dup: | |
| 6 | pop bx ! return address | |
| 7 | mov ax,si | |
| 8 | mov dx,di | |
| 9 | mov si,sp | |
| 10 | sub sp,cx | |
| 11 | mov di,sp | |
| 12 | sar cx,#1 | |
| 13 | rep | |
| 14 | mov | |
| 15 | mov si,ax | |
| 16 | mov di,dx | |
| 17 | jmp (bx) |
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