source: xtideuniversalbios/trunk/Assembly_Library/Src/Display/Display.asm@ 240

Last change on this file since 240 was 181, checked in by krille_n_@…, 13 years ago

Changes to all parts of the project:

  • Size optimizations.
  • Added a define (EXCLUDE_FROM_XTIDECFG) to exclude unused library code from XTIDECFG.
  • Tried to minimize time spent with interrupts disabled.
  • Some minor attempts to improve speed (reordering instructions etc).
  • Tried to improve readability, did some cleanup and fixed some errors in comments.
File size: 3.7 KB
Line 
1; Project name : Assembly Library
2; Description : Display Library functions for CALL_DISPLAY_LIBRARY macro
3; that users should use to make library call.
4
5; Section containing code
6SECTION .text
7
8;--------------------------------------------------------------------
9; DisplayFunctionFromDI
10; Parameters:
11; DI: Function to call (DISPLAY_LIB.functionName)
12; Others: Depends on function to call (DX cannot be parameter)
13; Returns:
14; Depends on function to call
15; Corrupts registers:
16; AX (unless used as a return register), DI
17;--------------------------------------------------------------------
18ALIGN JUMP_ALIGN
19Display_FunctionFromDI:
20 push es
21 push ds
22 push dx
23
24 cld
25 LOAD_BDA_SEGMENT_TO ds, dx
26 mov dx, di
27 les di, [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.fpCursorPosition]
28 call dx
29 mov [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.fpCursorPosition], di
30
31 pop dx
32 pop ds
33 pop es
34 ret
35
36;--------------------------------------------------------------------
37; Display_FormatNullTerminatedStringFromCSSI
38; Parameters:
39; Same as DisplayPrint_FormattedNullTerminatedStringFromCSSI
40; Returns:
41; Stack variables will be cleaned
42; Corrupts registers:
43; AX
44;--------------------------------------------------------------------
45ALIGN JUMP_ALIGN
46Display_FormatNullTerminatedStringFromCSSI:
47 pop ax ; Discard return address to inside Display_FunctionFromDI
48 call DisplayPrint_FormattedNullTerminatedStringFromCSSI
49 mov [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.fpCursorPosition], di
50
51 pop dx
52 pop ds
53 pop es
54
55 pop ax ; Pop return address
56 mov sp, bp ; Clean stack variables
57 jmp ax
58
59
60 %define InitializeDisplayContext DisplayContext_Initialize
61
62%ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
63 %define SetCharacterPointerFromBXAX DisplayContext_SetCharacterPointerFromBXAX
64%endif
65 %define SetCharOutputFunctionFromAXwithAttribFlagInBL DisplayContext_SetCharOutputFunctionFromAXwithAttribFlagInBL
66 %define SetCharacterOutputParameterFromAX DisplayContext_SetCharacterOutputParameterFromAX
67 %define SetCharacterAttributeFromAL DisplayContext_SetCharacterAttributeFromAL
68 %define SetCursorShapeFromAX DisplayCursor_SetShapeFromAX
69 %define SetCursorCoordinatesFromAX DisplayCursor_SetCoordinatesFromAX
70 %define SetNewPageFromAL DisplayPage_SetFromAL
71 %define SynchronizeDisplayContextToHardware DisplayContext_SynchronizeToHardware
72
73%ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
74 %define GetCharacterPointerToBXAX DisplayContext_GetCharacterPointerToBXAX
75%endif
76 %define GetSoftwareCoordinatesToAX DisplayCursor_GetSoftwareCoordinatesToAX
77 %define GetColumnsToALandRowsToAH DisplayPage_GetColumnsToALandRowsToAH
78
79 %define FormatNullTerminatedStringFromCSSI Display_FormatNullTerminatedStringFromCSSI
80%ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
81 %define PrintSignedWordFromAXWithBaseInBX DisplayPrint_SignedWordFromAXWithBaseInBX
82%endif
83 %define PrintWordFromAXwithBaseInBX DisplayPrint_WordFromAXWithBaseInBX
84 %define PrintCharBufferFromBXSIwithLengthInCX DisplayPrint_CharacterBufferFromBXSIwithLengthInCX
85 %define PrintNullTerminatedStringFromBXSI DisplayPrint_NullTerminatedStringFromBXSI
86 %define PrintNullTerminatedStringFromCSSI DisplayPrint_NullTerminatedStringFromCSSI
87 %define PrintRepeatedCharacterFromALwithCountInCX DisplayPrint_RepeatCharacterFromALwithCountInCX
88 %define PrintCharacterFromAL DisplayPrint_CharacterFromAL
89 %define PrintNewlineCharacters DisplayPrint_Newline
90%ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
91 %define ClearAreaWithHeightInAHandWidthInAL DisplayPrint_ClearAreaWithHeightInAHandWidthInAL
92%endif
93 %define ClearScreenWithCharInALandAttrInAH DisplayPrint_ClearScreenWithCharInALandAttributeInAH
94
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