Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 115 insertions, 0 deletions

diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-PrintChr.asm b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-PrintChr.asm
new file mode 100644
index 00000000..4099a967
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-PrintChr.asm
@@ -0,0 +1,115 @@
+; $Id: bs3-cmn-PrintChr.asm $
+;; @file
+; BS3Kit - Bs3PrintChr.
+;
+
+;
+; Copyright (C) 2007-2022 Oracle and/or its affiliates.
+;
+; This file is part of VirtualBox base platform packages, as
+; available from https://www.virtualbox.org.
+;
+; This program is free software; you can redistribute it and/or
+; modify it under the terms of the GNU General Public License
+; as published by the Free Software Foundation, in version 3 of the
+; License.
+;
+; This program is distributed in the hope that it will be useful, but
+; WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+; General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program; if not, see <https://www.gnu.org/licenses>.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+; in the VirtualBox distribution, in which case the provisions of the
+; CDDL are applicable instead of those of the GPL.
+;
+; You may elect to license modified versions of this file under the
+; terms and conditions of either the GPL or the CDDL or both.
+;
+; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+;
+
+
+;*********************************************************************************************************************************
+;*  Header Files                                                                                                                 *
+;*********************************************************************************************************************************
+%include "bs3kit-template-header.mac"
+
+
+;*********************************************************************************************************************************
+;*  External Symbols                                                                                                             *
+;*********************************************************************************************************************************
+%if TMPL_BITS == 16
+BS3_EXTERN_DATA16 g_bBs3CurrentMode
+%endif
+BS3_EXTERN_CMN Bs3Syscall
+
+
+TMPL_BEGIN_TEXT
+
+;;
+; @cproto   BS3_DECL(void) Bs3PrintChr_c16(char ch);
+;
+BS3_PROC_BEGIN_CMN Bs3PrintChr, BS3_PBC_NEAR
+        BS3_CALL_CONV_PROLOG 1
+        push    xBP
+        mov     xBP, xSP
+        push    xAX
+        push    xCX
+        push    xBX
+
+%if TMPL_BITS == 16
+        ; If we're in real mode or v8086 mode, call the VGA BIOS directly.
+        mov     bl, [g_bBs3CurrentMode]
+        cmp     bl, BS3_MODE_RM
+        je      .do_vga_bios_call
+ %if 0
+        test    bl, BS3_MODE_CODE_V86
+        jz      .do_system_call
+ %else
+        jmp     .do_system_call
+ %endif
+
+.do_vga_bios_call:
+        mov     al, [xBP + xCB*2]       ; Load the char
+        cmp     al, 0ah                 ; \n
+        je      .newline
+        mov     bx, 0ff00h
+        mov     ah, 0eh
+        int     10h
+        jmp     .return
+.newline:
+        mov     ax, 0e0dh               ; cmd + '\r'.
+        mov     bx, 0ff00h
+        int     10h
+        mov     ax, 0e0ah               ; cmd + '\n'.
+        mov     bx, 0ff00h
+        int     10h
+        jmp     .return
+%endif
+
+.do_system_call:
+        mov     cl, [xBP + xCB*2]       ; Load the char
+        mov     ax, BS3_SYSCALL_PRINT_CHR
+        call    Bs3Syscall              ; near! no BS3_CALL!
+
+.return:
+        pop     xBX
+        pop     xCX
+        pop     xAX
+        pop     xBP
+        BS3_CALL_CONV_EPILOG 1
+        ret
+BS3_PROC_END_CMN   Bs3PrintChr
+
+;
+; Generate 16-bit far stub.
+; Peformance critical, so don't penalize near calls.
+;
+BS3_CMN_FAR_STUB Bs3PrintChr, 2
+