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Rev | Author | Line No. | Line |
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8210 | maxcodehac | 1 | ; |
2 | ; mmx format converter main loops for HERMES |
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3 | ; Some routines Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk) |
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4 | ; This source code is licensed under the GNU LGPL |
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5 | ; |
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6 | ; Please refer to the file COPYING.LIB contained in the distribution for |
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7 | ; licensing conditions |
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8 | ; |
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9 | |||
10 | BITS 32 |
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11 | |||
9172 | turbocat | 12 | %include "common.inc" |
8210 | maxcodehac | 13 | |
9172 | turbocat | 14 | SDL_FUNC _ConvertMMX |
9202 | turbocat | 15 | SDL_FUNC ConvertMMX |
8210 | maxcodehac | 16 | |
17 | SECTION .text |
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18 | |||
19 | ;; _ConvertMMX: |
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20 | ;; [ESP+8] ConverterInfo* |
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21 | ;; -------------------------------------------------------------------------- |
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22 | ;; ConverterInfo (ebp+..) |
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23 | ;; 0: void *s_pixels |
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24 | ;; 4: int s_width |
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25 | ;; 8: int s_height |
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26 | ;; 12: int s_add |
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27 | ;; 16: void *d_pixels |
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28 | ;; 20: int d_width |
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29 | ;; 24: int d_height |
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30 | ;; 28: int d_add |
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31 | ;; 32: void (*converter_function)() |
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32 | ;; 36: int32 *lookup |
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9202 | turbocat | 33 | |
34 | ConvertMMX |
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8210 | maxcodehac | 35 | _ConvertMMX: |
36 | push ebp |
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37 | mov ebp,esp |
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38 | |||
39 | ; Save the registers used by the blitters, necessary for optimized code |
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40 | pusha |
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41 | |||
42 | mov eax,[ebp+8] |
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43 | |||
44 | cmp dword [eax+4],BYTE 0 |
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45 | je endconvert |
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46 | |||
47 | mov ebp,eax |
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48 | |||
49 | mov esi,[ebp+0] |
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50 | mov edi,[ebp+16] |
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51 | |||
52 | y_loop: |
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53 | mov ecx,[ebp+4] |
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54 | |||
9172 | turbocat | 55 | call [ebp+32] |
8210 | maxcodehac | 56 | |
57 | add esi,[ebp+12] |
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58 | add edi,[ebp+28] |
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59 | |||
60 | dec dword [ebp+8] |
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61 | jnz y_loop |
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62 | |||
63 | |||
64 | ; Restore the registers used by the blitters, necessary for optimized code |
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65 | popa |
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66 | |||
67 | pop ebp |
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68 | |||
69 | endconvert: |
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70 | emms |
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71 | |||
72 | ret |
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73 | |||
9172 | turbocat | 74 | %ifidn __OUTPUT_FORMAT__,elf32 |
75 | section .note.GNU-stack noalloc noexec nowrite progbits |
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76 | %endif |