Mercurial > sdl-ios-xcode
view src/hermes/mmx_main.asm @ 2046:da8332c8f480
Replaced strncmp for SDL_VIDEODRIVER test with strcasecmp
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 01 Oct 2006 02:28:41 +0000 |
parents | eb4d9d99849b |
children | 180fa05e98e2 |
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; ; mmx format converter main loops for HERMES ; Some routines Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk) ; This source code is licensed under the GNU LGPL ; ; Please refer to the file COPYING.LIB contained in the distribution for ; licensing conditions ; BITS 32 %include "common.inc" SDL_FUNC _ConvertMMX SDL_FUNC _mmxreturn SECTION .text ;; _ConvertMMX: ;; [ESP+8] ConverterInfo* ;; -------------------------------------------------------------------------- ;; ConverterInfo (ebp+..) ;; 0: void *s_pixels ;; 4: int s_width ;; 8: int s_height ;; 12: int s_add ;; 16: void *d_pixels ;; 20: int d_width ;; 24: int d_height ;; 28: int d_add ;; 32: void (*converter_function)() ;; 36: int32 *lookup _ConvertMMX: push ebp mov ebp,esp ; Save the registers used by the blitters, necessary for optimized code pusha mov eax,[ebp+8] cmp dword [eax+4],BYTE 0 je endconvert mov ebp,eax mov esi,[ebp+0] mov edi,[ebp+16] y_loop: mov ecx,[ebp+4] jmp [ebp+32] _mmxreturn: add esi,[ebp+12] add edi,[ebp+28] dec dword [ebp+8] jnz y_loop ; Restore the registers used by the blitters, necessary for optimized code popa pop ebp endconvert: emms ret %ifidn __OUTPUT_FORMAT__,elf section .note.GNU-stack noalloc noexec nowrite progbits %endif