Mercurial > sdl-ios-xcode
annotate src/hermes/mmx_main.asm @ 1998:cbac0f77a799
Fixed silly logic thing.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 31 Aug 2006 22:22:34 +0000 |
| parents | eb4d9d99849b |
| children | 180fa05e98e2 |
| rev | line source |
|---|---|
| 0 | 1 ; |
| 2 ; mmx format converter main loops for HERMES | |
| 3 ; Some routines Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk) | |
| 4 ; This source code is licensed under the GNU LGPL | |
| 5 ; | |
| 6 ; Please refer to the file COPYING.LIB contained in the distribution for | |
| 7 ; licensing conditions | |
| 8 ; | |
| 9 | |
| 10 BITS 32 | |
| 11 | |
|
1873
eb4d9d99849b
Renamed, per Mike's comment on bug #157
Sam Lantinga <slouken@libsdl.org>
parents:
1871
diff
changeset
|
12 %include "common.inc" |
| 1871 | 13 |
| 14 SDL_FUNC _ConvertMMX | |
| 15 SDL_FUNC _mmxreturn | |
| 0 | 16 |
| 17 SECTION .text | |
| 18 | |
| 19 ;; _ConvertMMX: | |
| 20 ;; [ESP+8] ConverterInfo* | |
| 21 ;; -------------------------------------------------------------------------- | |
| 22 ;; ConverterInfo (ebp+..) | |
| 23 ;; 0: void *s_pixels | |
| 24 ;; 4: int s_width | |
| 25 ;; 8: int s_height | |
| 26 ;; 12: int s_add | |
| 27 ;; 16: void *d_pixels | |
| 28 ;; 20: int d_width | |
| 29 ;; 24: int d_height | |
| 30 ;; 28: int d_add | |
| 31 ;; 32: void (*converter_function)() | |
| 32 ;; 36: int32 *lookup | |
| 33 | |
| 34 _ConvertMMX: | |
| 35 push ebp | |
| 36 mov ebp,esp | |
| 37 | |
| 38 ; Save the registers used by the blitters, necessary for optimized code | |
| 39 pusha | |
| 40 | |
| 41 mov eax,[ebp+8] | |
| 42 | |
| 43 cmp dword [eax+4],BYTE 0 | |
| 44 je endconvert | |
| 45 | |
| 46 mov ebp,eax | |
| 47 | |
| 48 mov esi,[ebp+0] | |
| 49 mov edi,[ebp+16] | |
| 50 | |
| 51 y_loop: | |
| 52 mov ecx,[ebp+4] | |
| 53 | |
| 54 jmp [ebp+32] | |
| 55 | |
| 56 _mmxreturn: | |
| 57 add esi,[ebp+12] | |
| 58 add edi,[ebp+28] | |
| 59 | |
| 60 dec dword [ebp+8] | |
| 61 jnz y_loop | |
| 62 | |
| 63 | |
| 64 ; Restore the registers used by the blitters, necessary for optimized code | |
| 65 popa | |
| 66 | |
| 67 pop ebp | |
| 68 | |
| 69 endconvert: | |
| 70 emms | |
| 71 | |
| 72 ret | |
| 73 | |
|
1199
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
74 %ifidn __OUTPUT_FORMAT__,elf |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
75 section .note.GNU-stack noalloc noexec nowrite progbits |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
|
76 %endif |