Mercurial > sdl-ios-xcode
view src/hermes/mmx_main.asm @ 2079:1ed2155b7ee4
From: Torsten Giebl
Subject: ALLOCA Patch for SDL-1.2
Newsgroups: gmane.comp.lib.sdl
Date: 2006-10-24 00:31:16 GMT
Hello !
As alloca.h is not available on CYGWIN and MinGW32
it should not be checked there or it should be checked
with -mno-cygwin using.
I am a total configure.in newbie, but i found the way
that things are handled in configure.in pretty bad for the
case CYGWIN with MinGW Mode or not.
Maybe this is not possible but i would like to
have a way to detect at the start for example CYGWIN
and then add. ask if configure was called with --enable-cygwin
for example. --enable-cygwin should be optional and disabled
by default as we want to have MinGW Mode by default.
Only if the user wants it he should be able to use it.
Then the whole configure.in would get add. questions
okay the system is CYGWIN with or without MinGW Mode.
The alloca.h thing for example is only
available under CYGWIN ( without MinGW Mode ).
CU
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Fri, 01 Dec 2006 20:25:03 +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