Mercurial > sdl-ios-xcode
annotate src/hermes/x86_main.asm @ 1282:217f5d5a49e5
Date: Sat, 15 Jan 2005 02:01:51 +0000 (UTC)
From: jimrandomh
Subject: [SDL] Re: Modifier keys pressed during initialization stick
I wrote a simple test program which initializes SDL, prints the SDL
version number, then prints any keydown and keyup events with their
modifiers. (Source code below). Compilation was done using Visual
Studio 6, release mode.
My test sequence was:
Start a command prompt. Type the name of the test program.
shift down
enter down (program starts)
Wait for window to appear
enter up
shift up
spacebar down
spacebar up
Under Windows 98, the output was correct:
SDL 1.2.8
left shift down
shift-return down
shift-return up
left shift up
space down
space up
Under Windows 2000 and under Windows XP, the output was:
SDL 1.2.8
shift-space down
shift-space up
Since shift was not held at the time space was pressed, this is
incorrect. Similar results were observed with launching in different
ways (including double-clicking in Windows Explorer), so it does not
depend on the launching terminal.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 29 Jan 2006 07:57:13 +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 | |
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From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
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107 push ebx |
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From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
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108 |
0 | 109 mov eax,1 |
110 cpuid | |
1227
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From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
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111 mov eax,edx |
0 | 112 |
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From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents:
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113 pop ebx |
0 | 114 |
115 .L1: | |
116 ret | |
1199
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Ryan C. Gordon <icculus@icculus.org>
parents:
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117 |
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From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
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118 %ifidn __OUTPUT_FORMAT__,elf |
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From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents:
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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:
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120 %endif |