VirtualBox

source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bootsector2-common-routines-template-2.mac@ 90780

Last change on this file since 90780 was 82968, checked in by vboxsync, 5 years ago

Copyright year updates by scm.

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1; $Id: bootsector2-common-routines-template-2.mac 82968 2020-02-04 10:35:17Z vboxsync $
2;; @file
3; bootsector2 common routines - template containing code specific to each mode.
4;
5
6;
7; Copyright (C) 2007-2020 Oracle Corporation
8;
9; This file is part of VirtualBox Open Source Edition (OSE), as
10; available from http://www.virtualbox.org. This file is free software;
11; you can redistribute it and/or modify it under the terms of the GNU
12; General Public License (GPL) as published by the Free Software
13; Foundation, in version 2 as it comes in the "COPYING" file of the
14; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16;
17; The contents of this file may alternatively be used under the terms
18; of the Common Development and Distribution License Version 1.0
19; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20; VirtualBox OSE distribution, in which case the provisions of the
21; CDDL are applicable instead of those of the GPL.
22;
23; You may elect to license modified versions of this file under the
24; terms and conditions of either the GPL or the CDDL or both.
25;
26
27%include "bootsector2-template-header.mac"
28ALIGNCODE(32)
29GLOBALNAME TMPL_NM(g_szMode)
30 db TMPL_MODE_STR, 0
31
32
33;;
34; Prints a string on the screen.
35;
36; @param ds:ax The string to print (null terminated).
37;
38; @uses nothing
39;
40BEGINPROC TMPL_NM(PrintStr)
41 push xBP
42 mov xBP, xSP
43 push xAX
44 push xBX
45 push xSI
46
47 mov xSI, xAX
48.next:
49 lodsb
50 test al, al
51 jz .done
52%ifdef TMPL_HAVE_BIOS
53 mov bx, 0ff00h
54 mov ah, 0eh
55 int 10h
56%else
57 call TMPL_NM(PrintChr)
58%endif
59 jmp .next
60
61.done:
62 pop xSI
63 pop xBX
64 pop xAX
65 leave
66 ret
67ENDPROC TMPL_NM(PrintStr)
68
69
70;;
71; Prints a string on the screen.
72;
73; @param al The character to print.
74;
75; @uses nothing
76;
77BEGINCODELOW
78BEGINPROC TMPL_NM(PrintChr)
79 push xBP
80 mov xBP, xSP
81 push xAX
82 push xBX
83
84%ifndef TMPL_HAVE_BIOS
85 %ifdef BS2_WITH_TRAPS
86 mov bx, cs
87 and xBX, 0x3
88 push xBX
89 jz .ring_ok
90 call TMPL_NM_CMN(Bs2ToRing0)
91.ring_ok:
92 %endif
93
94 mov bl, al
95 call TMPL_NM(LeaveCpuMode)
96 mov al, bl
97BITS 16
98%endif
99
100 mov bx, 0ff00h
101 mov ah, 0eh
102 int 10h
103
104%ifndef TMPL_HAVE_BIOS
105 call TMPL_NM(EnterCpuMode)
106BITS TMPL_BITS
107 %ifdef BS2_WITH_TRAPS
108 pop xAX
109 test al, al
110 jz .ring_restored
111 call TMPL_NM_CMN(Bs2ToRingN)
112.ring_restored:
113 %endif
114%endif
115
116 pop xBX
117 pop xAX
118 leave
119 ret
120ENDPROC TMPL_NM(PrintChr)
121TMPL_BEGINCODE
122
123
124%ifndef TMPL_HAVE_BIOS
125
126;;
127; Leaves the current CPU mode and returns to real mode.
128;
129; @uses nothing
130;
131BEGINPROC TMPL_NM(LeaveCpuMode)
132 jmp TMPL_NM(Bs2ExitMode)
133ENDPROC TMPL_NM(LeaveCpuMode)
134
135
136;;
137; Undo what LeaveCpuMode did.
138;
139; @uses nothing
140;
141BEGINCODELOW
142BITS 16
143BEGINPROC TMPL_NM(EnterCpuMode)
144 jmp TMPL_NM(Bs2EnterMode_rm)
145ENDPROC TMPL_NM(EnterCpuMode)
146TMPL_BEGINCODE
147BITS TMPL_BITS
148
149%endif ; TMPL_HAVE_BIOS
150
151
152;;
153; Sets the global variable for the current CPU mode.
154;
155; @uses nothing.
156;
157BEGINPROC TMPL_NM(SetCpuModeGlobals)
158%ifdef TMPL_CMN_PE
159 %ifdef BS2_INC_PE16
160 mov word [g_pfnPrintStrInternal_p16], PrintStr_pe16
161 mov word [g_pfnPrintChrInternal_p16], PrintChr_pe16
162 %endif
163 %ifdef BS2_INC_PE32
164 mov dword [g_pfnPrintStrInternal_p32], PrintStr_pe32
165 mov dword [g_pfnPrintChrInternal_p32], PrintChr_pe32
166 %endif
167
168%elifdef TMPL_CMN_PP
169 %ifdef BS2_INC_PP16
170 mov word [g_pfnPrintStrInternal_p16], PrintStr_pp16
171 mov word [g_pfnPrintChrInternal_p16], PrintChr_pp16
172 %endif
173 %ifdef BS2_INC_PP32
174 mov dword [g_pfnPrintStrInternal_p32], PrintStr_pp32
175 mov dword [g_pfnPrintChrInternal_p32], PrintChr_pp32
176 %endif
177
178%elifdef TMPL_CMN_PAE
179 %ifdef BS2_INC_PAE16
180 mov word [g_pfnPrintStrInternal_p16], PrintStr_pae16
181 mov word [g_pfnPrintChrInternal_p16], PrintChr_pae16
182 %endif
183 %ifdef BS2_INC_PAE32
184 mov dword [g_pfnPrintStrInternal_p32], PrintStr_pae32
185 mov dword [g_pfnPrintChrInternal_p32], PrintChr_pae32
186 %endif
187
188%elifdef TMPL_CMN_LM
189 %ifdef BS2_INC_LM16
190 mov word [g_pfnPrintStrInternal_p16], PrintStr_lm16
191 mov word [g_pfnPrintChrInternal_p16], PrintChr_lm16
192 %endif
193 %ifdef BS2_INC_LM32
194 mov dword [g_pfnPrintStrInternal_p32], PrintStr_lm32
195 mov dword [g_pfnPrintChrInternal_p32], PrintChr_lm32
196 %endif
197 %ifdef BS2_INC_LM64
198 mov dword [g_pfnPrintStrInternal_p64], PrintStr_lm64
199 mov dword [g_pfnPrintChrInternal_p64], PrintChr_lm64
200 %endif
201
202%elifdef TMPL_16BIT
203 mov word [TMPL_NM_CMN(g_pfnPrintStrInternal)], TMPL_NM(PrintStr)
204 mov word [TMPL_NM_CMN(g_pfnPrintChrInternal)], TMPL_NM(PrintChr)
205%else
206 %error "missing case"
207%endif
208 ret
209ENDPROC TMPL_NM(SetCpuModeGlobals)
210
211
212
213%include "bootsector2-template-footer.mac"
214
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