annotate src/hermes/mmx_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 2d6dc7de1145
children 393092a3ebf6
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1 ;
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2 ; mmx format converter main loops for HERMES
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3 ; Some routines Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk)
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4 ; This source code is licensed under the GNU LGPL
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5 ;
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6 ; Please refer to the file COPYING.LIB contained in the distribution for
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7 ; licensing conditions
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8 ;
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9
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10 BITS 32
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11
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12 GLOBAL _ConvertMMX
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13 GLOBAL _mmxreturn
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14
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15 SECTION .text
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16
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17 ;; _ConvertMMX:
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18 ;; [ESP+8] ConverterInfo*
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19 ;; --------------------------------------------------------------------------
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20 ;; ConverterInfo (ebp+..)
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21 ;; 0: void *s_pixels
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22 ;; 4: int s_width
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23 ;; 8: int s_height
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24 ;; 12: int s_add
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25 ;; 16: void *d_pixels
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26 ;; 20: int d_width
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27 ;; 24: int d_height
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28 ;; 28: int d_add
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29 ;; 32: void (*converter_function)()
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30 ;; 36: int32 *lookup
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31
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32 _ConvertMMX:
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33 push ebp
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34 mov ebp,esp
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35
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36 ; Save the registers used by the blitters, necessary for optimized code
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37 pusha
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38
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39 mov eax,[ebp+8]
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40
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41 cmp dword [eax+4],BYTE 0
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42 je endconvert
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43
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44 mov ebp,eax
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45
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46 mov esi,[ebp+0]
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47 mov edi,[ebp+16]
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48
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49 y_loop:
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50 mov ecx,[ebp+4]
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51
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52 jmp [ebp+32]
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53
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54 _mmxreturn:
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55 add esi,[ebp+12]
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56 add edi,[ebp+28]
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57
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58 dec dword [ebp+8]
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59 jnz y_loop
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60
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61
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62 ; Restore the registers used by the blitters, necessary for optimized code
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63 popa
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64
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65 pop ebp
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66
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67 endconvert:
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68 emms
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69
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70 ret
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71
1199
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72 %ifidn __OUTPUT_FORMAT__,elf
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73 section .note.GNU-stack noalloc noexec nowrite progbits
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74 %endif