Mercurial > sdl-ios-xcode
annotate 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 |
| rev | line source |
|---|---|
| 0 | 1 ; |
| 2 ; x86 format converters for HERMES | |
| 3 ; Some routines Copyright (c) 1998 Christian Nentwich (brn@eleet.mcb.at) | |
| 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 ; Most routines are (c) Glenn Fiedler (ptc@gaffer.org), used with permission | |
| 10 ; | |
| 11 | |
| 12 BITS 32 | |
| 13 | |
| 14 GLOBAL _ConvertX86 | |
| 15 GLOBAL _x86return | |
| 16 | |
| 17 GLOBAL _Hermes_X86_CPU | |
| 18 | |
| 19 SECTION .text | |
| 20 | |
| 21 ;; _ConvertX86: | |
| 22 ;; [ESP+8] ConverterInfo* | |
| 23 ;; -------------------------------------------------------------------------- | |
| 24 ;; ConverterInfo (ebp+..) | |
| 25 ;; 0: void *s_pixels | |
| 26 ;; 4: int s_width | |
| 27 ;; 8: int s_height | |
| 28 ;; 12: int s_add | |
| 29 ;; 16: void *d_pixels | |
| 30 ;; 20: int d_width | |
| 31 ;; 24: int d_height | |
| 32 ;; 28: int d_add | |
| 33 ;; 32: void (*converter_function)() | |
| 34 ;; 36: int32 *lookup | |
| 35 | |
| 36 _ConvertX86: | |
| 37 push ebp | |
| 38 mov ebp,esp | |
| 39 | |
| 40 ; Save the registers used by the blitters, necessary for optimized code | |
| 41 pusha | |
| 42 | |
| 43 mov eax,[ebp+8] | |
| 44 | |
| 45 cmp dword [eax+4],BYTE 0 | |
| 46 je endconvert | |
| 47 | |
| 48 mov ebp,eax | |
| 49 | |
| 50 mov esi,[ebp+0] | |
| 51 mov edi,[ebp+16] | |
| 52 | |
| 53 y_loop: | |
| 54 mov ecx,[ebp+4] | |
| 55 | |
| 56 jmp [ebp+32] | |
| 57 | |
| 58 _x86return: | |
| 59 add esi,[ebp+12] | |
| 60 add edi,[ebp+28] | |
| 61 | |
| 62 dec dword [ebp+8] | |
| 63 jnz y_loop | |
| 64 | |
| 65 ; Restore the registers used by the blitters, necessary for optimized code | |
| 66 popa | |
| 67 | |
| 68 pop ebp | |
| 69 | |
| 70 endconvert: | |
| 71 ret | |
| 72 | |
| 73 | |
| 74 | |
| 75 ;; Hermes_X86_CPU returns the CPUID flags in eax | |
| 76 | |
| 77 _Hermes_X86_CPU: | |
| 78 pushfd | |
| 79 pop eax | |
| 80 | |
| 81 mov ecx,eax | |
| 82 | |
| 83 xor eax,040000h | |
| 84 push eax | |
| 85 | |
| 86 popfd | |
| 87 pushfd | |
| 88 | |
| 89 pop eax | |
| 90 xor eax,ecx | |
| 91 jz .L1 ; Processor is 386 | |
| 92 | |
| 93 push ecx | |
| 94 popfd | |
| 95 | |
| 96 mov eax,ecx | |
| 97 xor eax,200000h | |
| 98 | |
| 99 push eax | |
| 100 popfd | |
| 101 pushfd | |
| 102 | |
| 103 pop eax | |
| 104 xor eax,ecx | |
| 105 je .L1 | |
| 106 | |
|
1227
3202d727bb4b
From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
1199
diff
changeset
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107 push ebx |
|
3202d727bb4b
From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
1199
diff
changeset
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108 |
| 0 | 109 mov eax,1 |
| 110 cpuid | |
|
1227
3202d727bb4b
From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
1199
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111 mov eax,edx |
| 0 | 112 |
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1227
3202d727bb4b
From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
1199
diff
changeset
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113 pop ebx |
| 0 | 114 |
| 115 .L1: | |
| 116 ret | |
|
1199
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From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
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117 |
|
2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
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118 %ifidn __OUTPUT_FORMAT__,elf |
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2d6dc7de1145
From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
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119 section .note.GNU-stack noalloc noexec nowrite progbits |
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From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
1166
diff
changeset
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120 %endif |