source:
trunk/minix/lib/ack/i386/em/em_cfi.s@
19
| Last change on this file since 19 was 9, checked in by , 14 years ago | |
|---|---|
| File size: 352 bytes | |
| Line | |
|---|---|
| 1 | .sect .text; .sect .rom; .sect .data; .sect .bss |
| 2 | .define .cfi |
| 3 | |
| 4 | .sect .text |
| 5 | .cfi: |
| 6 | mov bx,sp |
| 7 | fstcw 4(bx) |
| 8 | wait |
| 9 | mov dx,4(bx) |
| 10 | or 4(bx),0xc00 ! truncating mode |
| 11 | wait |
| 12 | fldcw 4(bx) |
| 13 | cmp 8(bx),4 |
| 14 | jne 2f |
| 15 | ! loc 4 loc ? cfi |
| 16 | flds 12(bx) |
| 17 | fistpl 12(bx) |
| 18 | 1: |
| 19 | mov 4(bx),dx |
| 20 | wait |
| 21 | fldcw 4(bx) |
| 22 | ret |
| 23 | 2: |
| 24 | ! loc 8 loc ? cfi |
| 25 | fldd 12(bx) |
| 26 | fistpl 16(bx) |
| 27 | jmp 1b |
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