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Rev | Author | Line No. | Line |
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2 | pj | 1 | /* Project: OSLib |
2 | * Description: The OS Construction Kit |
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3 | * Date: 1.6.2000 |
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4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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5 | * |
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6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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7 | * low-level infrastructure for developing OS kernels and Embedded |
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8 | * Applications; it partially derives from the HARTIK project but it |
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9 | * currently is independently developed. |
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10 | * |
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11 | * OSLib is distributed under GPL License, and some of its code has |
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12 | * been derived from the Linux kernel source; also some important |
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13 | * ideas come from studying the DJGPP go32 extender. |
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14 | * |
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15 | * We acknowledge the Linux Community, Free Software Foundation, |
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16 | * D.J. Delorie and all the other developers who believe in the |
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17 | * freedom of software and ideas. |
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18 | * |
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19 | * For legalese, check out the included GPL license. |
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20 | */ |
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21 | |||
22 | /* Assembler portion of the library: |
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23 | function: modf! */ |
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24 | |||
25 | #include <ll/i386/linkage.h> |
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26 | |||
27 | .text |
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28 | .globl SYMBOL_NAME(modf) |
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29 | |||
30 | SYMBOL_NAME_LABEL(modf) |
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31 | pushl %ebp |
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32 | movl %esp,%ebp |
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33 | subl $16,%esp |
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34 | pushl %ebx |
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35 | fnstcw -4(%ebp) |
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36 | fwait |
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37 | movw -4(%ebp),%ax |
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38 | orw $0x0c3f,%ax |
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39 | movw %ax,-8(%ebp) |
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40 | fldcw -8(%ebp) |
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41 | fwait |
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42 | fldl 8(%ebp) |
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43 | frndint |
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44 | fstpl -16(%ebp) |
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45 | fwait |
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46 | movl -16(%ebp),%edx |
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47 | movl -12(%ebp),%ecx |
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48 | movl 16(%ebp),%ebx |
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49 | movl %edx,(%ebx) |
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50 | movl %ecx,4(%ebx) |
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51 | fldl 8(%ebp) |
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52 | fsubl -16(%ebp) |
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53 | leal -20(%ebp),%esp |
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54 | fclex |
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55 | fldcw -4(%ebp) |
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56 | fwait |
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57 | popl %ebx |
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58 | leave |
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59 | ret |