source: xtideuniversalbios/trunk/Configurator/Src/MenuPage.asm@ 629

Last change on this file since 629 was 293, checked in by krille_n_@…, 13 years ago

Commit 1/2 (Library, Configurators and Serial Server):

  • Changed Emulate.inc so that making 286 and 386 versions now works. Additionally, only one processor type define is needed in the makefile.
  • Minor optimizations.
  • Fixed spelling and did some cleaning.
File size: 4.5 KB
Line 
1; Project name : XTIDE Universal BIOS Configurator
2; Description : Functions to access MENUPAGE structs.
3
4; Section containing code
5SECTION .text
6
7;--------------------------------------------------------------------
8; Returns number of visible menuitems in MENUPAGE.
9;
10; MenuPage_GetNumberOfVisibleItems
11; Parameters:
12; DS:SI: Ptr to MENUPAGE
13; Returns:
14; AX: Number of visible menuitems
15; Corrupts registers:
16; DI
17;--------------------------------------------------------------------
18ALIGN JUMP_ALIGN
19MenuPage_GetNumberOfVisibleItems:
20 xor ax, ax ; Zero visible menuitems
21 mov di, MenuPage_IterateForNumberOfVisibleItems
22 jmp SHORT MenuPage_IterateMenuPageItems
23
24;--------------------------------------------------------------------
25; Iteration callback function for MenuPage_GetNumberOfVisibleItems.
26;
27; MenuPage_IterateForNumberOfVisibleItems
28; Parameters:
29; AX: Number of visible menuitems found so far
30; DS:BX: Ptr to MENUPAGEITEM to examine
31; Returns:
32; AX: Number of visible menuitems found so far
33; CF: Cleared to continue iteration
34; Corrupts registers:
35; Nothing
36;--------------------------------------------------------------------
37ALIGN JUMP_ALIGN
38MenuPage_IterateForNumberOfVisibleItems:
39 test BYTE [bx+MENUPAGEITEM.bFlags], FLG_MENUPAGEITEM_VISIBLE ; Clears CF
40 jz SHORT .NextItem
41 inc ax ; Increment visible menuitems
42ALIGN JUMP_ALIGN
43.NextItem:
44 ret
45
46
47;--------------------------------------------------------------------
48; Returns pointer to MENUPAGEITEM for visible index (menu library index).
49;
50; MenuPage_GetMenuPageItemForVisibleIndex
51; Parameters:
52; CX: Index of visible menuitem
53; DS:SI: Ptr to MENUPAGE
54; Returns:
55; DS:DI: Ptr to MENUPAGEITEM
56; CF: Set if MENUPAGEITEM was found
57; Corrupts registers:
58; AX
59;--------------------------------------------------------------------
60ALIGN JUMP_ALIGN
61MenuPage_GetMenuPageItemForVisibleIndex:
62 mov ax, cx ; Menuitem index to menuitems to skip
63 mov di, MenuPage_IterateForVisibleIndex
64 jmp SHORT MenuPage_IterateMenuPageItems
65
66;--------------------------------------------------------------------
67; Iteration callback function for MenuPage_GetMenuPageItemForVisibleIndex.
68;
69; MenuPage_IterateForVisibleIndex
70; Parameters:
71; AX: Number of visible menuitems left to skip
72; DS:BX: Ptr to MENUPAGEITEM to examine
73; Returns:
74; AX: Number of visible menuitems left to skip
75; CF: Cleared to continue iteration
76; Set if correct MENUPAGEITEM was found
77; Corrupts registers:
78; Nothing
79;--------------------------------------------------------------------
80ALIGN JUMP_ALIGN
81MenuPage_IterateForVisibleIndex:
82 test BYTE [bx+MENUPAGEITEM.bFlags], FLG_MENUPAGEITEM_VISIBLE ; Clears CF
83 jz SHORT .NextItem
84 sub ax, BYTE 1 ; Set CF if correct MENUITEM found
85ALIGN JUMP_ALIGN
86.NextItem:
87 ret
88
89
90;--------------------------------------------------------------------
91; Iterates MENUPAGEITEMs until terminated by callback function or
92; all MENUPAGEITEMs have been iterated.
93;
94; MenuPage_IterateMenuPageItems
95; Parameters:
96; AX,DX: Parameters to callback function
97; DI: Offset to iteration callback function
98; DS:SI: Ptr to MENUPAGE
99; Returns:
100; AX,DX: Return values from callback function
101; DS:DI: Ptr to MENUPAGEITEM (only if CF set)
102; CF: Cleared if terminated by end of menuitems
103; Set if terminated by callback function
104; Corrupts registers:
105; Nothing, unless corrupted by callback function
106;--------------------------------------------------------------------
107ALIGN JUMP_ALIGN
108MenuPage_IterateMenuPageItems:
109 push cx
110 push bx
111 eMOVZX cx, [si+MENUPAGE.bItemCnt]
112 lea bx, [si+MENUPAGE.rgMenuPageItem]
113ALIGN JUMP_ALIGN
114.IterationLoop:
115 call di ; Callback function
116 jc SHORT .IterationComplete ; CF set, end iteration
117 add bx, BYTE MENUPAGEITEM_size
118 loop .IterationLoop
119 clc ; Clear CF since end of MENUITEMs
120ALIGN JUMP_ALIGN
121.IterationComplete:
122 mov di, bx ; DS:DI points to MENUPAGEITEM
123 pop bx
124 pop cx
125 ret
126
127
128;--------------------------------------------------------------------
129; Updates number of menuitems and redraws them.
130;
131; MenuPage_InvalidateItemCount
132; Parameters:
133; DS:SI: Ptr to MENUPAGE
134; Returns:
135; Nothing
136; Corrupts registers:
137; AX, BX, CX, DX
138;--------------------------------------------------------------------
139ALIGN JUMP_ALIGN
140MenuPage_InvalidateItemCount:
141 push di
142 call MenuPage_GetNumberOfVisibleItems
143 mov cx, ax
144 mov dl, MFL_UPD_ITEM | MFL_UPD_NFO
145 call Menu_InvItemCnt
146 pop di
147 ret
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