Mercurial > sdl-ios-xcode
view src/hermes/x86_main.asm @ 1622:5bbfc3e20e10
Fixed bug #191
[I opted to go for a warning, since I often tweak configure.in, but don't want to rebuild the entire project]
One thing that was lost in the switch from automake to the new build system is
that there is now no rule to build configure from configure.in.
IMHO, if configure.in gets changed, then at the very least, the build system
should print out a warning (better, again IMHO, an error) about this fact.
Else, you easily forget about this when modifying configure.in.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Thu, 13 Apr 2006 13:23:56 +0000 |
parents | 3202d727bb4b |
children | 393092a3ebf6 |
line wrap: on
line source
; ; x86 format converters for HERMES ; Some routines Copyright (c) 1998 Christian Nentwich (brn@eleet.mcb.at) ; This source code is licensed under the GNU LGPL ; ; Please refer to the file COPYING.LIB contained in the distribution for ; licensing conditions ; ; Most routines are (c) Glenn Fiedler (ptc@gaffer.org), used with permission ; BITS 32 GLOBAL _ConvertX86 GLOBAL _x86return GLOBAL _Hermes_X86_CPU SECTION .text ;; _ConvertX86: ;; [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 _ConvertX86: 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] _x86return: 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: ret ;; Hermes_X86_CPU returns the CPUID flags in eax _Hermes_X86_CPU: pushfd pop eax mov ecx,eax xor eax,040000h push eax popfd pushfd pop eax xor eax,ecx jz .L1 ; Processor is 386 push ecx popfd mov eax,ecx xor eax,200000h push eax popfd pushfd pop eax xor eax,ecx je .L1 push ebx mov eax,1 cpuid mov eax,edx pop ebx .L1: ret %ifidn __OUTPUT_FORMAT__,elf section .note.GNU-stack noalloc noexec nowrite progbits %endif