From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- src/VBox/Devices/PC/BIOS/print.c | 306 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 306 insertions(+) create mode 100644 src/VBox/Devices/PC/BIOS/print.c (limited to 'src/VBox/Devices/PC/BIOS/print.c') diff --git a/src/VBox/Devices/PC/BIOS/print.c b/src/VBox/Devices/PC/BIOS/print.c new file mode 100644 index 00000000..88b08c88 --- /dev/null +++ b/src/VBox/Devices/PC/BIOS/print.c @@ -0,0 +1,306 @@ +/* $Id: print.c $ */ +/** @file + * PC BIOS - ??? + */ + +/* + * Copyright (C) 2006-2023 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 . + * + * SPDX-License-Identifier: GPL-3.0-only + * -------------------------------------------------------------------- + * + * This code is based on: + * + * ROM BIOS for use with Bochs/Plex86/QEMU emulation environment + * + * Copyright (C) 2002 MandrakeSoft S.A. + * + * MandrakeSoft S.A. + * 43, rue d'Aboukir + * 75002 Paris - France + * http://www.linux-mandrake.com/ + * http://www.mandrakesoft.com/ + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +/* + * Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice + * other than GPL or LGPL is available it will apply instead, Oracle elects to use only + * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where + * a choice of LGPL license versions is made available with the language indicating + * that LGPLv2 or any later version may be used, or where a choice of which version + * of the LGPL is applied is otherwise unspecified. + */ + + +#include +#include +#include "inlines.h" +#include "biosint.h" + +// Debug printf support + +/* Redirect INFO output to backdoor logging port. */ +#define INFO_PORT 0x504 +#define DEBUG_PORT 0x403 + +const char bios_prefix_string[] = "BIOS: "; + +void wrch(uint8_t c); +#pragma aux wrch = "mov ah, 0eh" "int 10h" parm [al] modify exact [ax bx]; + +void send(uint16_t action, uint8_t c) +{ +#if BX_DEBUG_SERIAL + if (c == '\n') + uart_tx_byte(BX_DEBUG_PORT, '\r'); + uart_tx_byte(BX_DEBUG_PORT, c); +#endif +#if BX_VIRTUAL_PORTS + if (action & BIOS_PRINTF_DEBUG) + outb(DEBUG_PORT, c); + if (action & BIOS_PRINTF_INFO) + outb(INFO_PORT, c); +#endif + if (action & BIOS_PRINTF_SCREEN) { + if (c == '\n') + wrch('\r'); + wrch(c); + } +} + +void put_int(uint16_t action, short val, short width, bx_bool neg) +{ + short nval = val / 10; + if (nval) + put_int(action, nval, width - 1, neg); + else { + while (--width > 0) + send(action, ' '); + if (neg) + send(action, '-'); + } + send(action, val - (nval * 10) + '0'); +} + +void put_uint(uint16_t action, unsigned short val, short width, bx_bool neg) +{ + unsigned short nval = val / 10; + if (nval) + put_uint(action, nval, width - 1, neg); + else { + while (--width > 0) + send(action, ' '); + if (neg) + send(action, '-'); + } + send(action, val - (nval * 10) + '0'); +} + +void put_luint(uint16_t action, unsigned long val, short width, bx_bool neg) +{ + unsigned long nval = val / 10; + if (nval) + put_luint(action, nval, width - 1, neg); + else { + while (--width > 0) + send(action, ' '); + if (neg) + send(action, '-'); + } + send(action, val - (nval * 10) + '0'); +} + +void put_str(uint16_t action, const char __far *s) +{ + uint8_t c; + + while (c = *s) { + send(action, c); + s++; + } +} + +void put_str_near(uint16_t action, const char __near *s) +{ + uint8_t c; + + while (c = *s) { + send(action, c); + s++; + } +} + + +//-------------------------------------------------------------------------- +// bios_printf() +// A compact variable argument printf function. +// +// Supports %[format_width][length]format +// where format can be x,X,u,d,s,S,c +// and the optional length modifier is l (ell, long 32-bit) or ll +// (long long, 64-bit). +// Only x,X work with ll +//-------------------------------------------------------------------------- +void bios_printf(uint16_t action, const char *s, ...) +{ + uint8_t c; + bx_bool in_format; + int i; + uint16_t arg, nibble, hibyte, format_width, hexadd; + va_list args; + + va_start( args, s ); + + in_format = 0; + format_width = 0; + + if ((action & BIOS_PRINTF_DEBHALT) == BIOS_PRINTF_DEBHALT) { + bios_printf (BIOS_PRINTF_SCREEN, "FATAL: "); + } + + while (c = *s) { + if ( c == '%' ) { + in_format = 1; + format_width = 0; + } + else if (in_format) { + if ( (c>='0') && (c<='9') ) { + format_width = (format_width * 10) + (c - '0'); + } + else { + arg = va_arg( args, uint16_t ); + if (c == 'x' || c == 'X') { + if (format_width == 0) + format_width = 4; + if (c == 'x') + hexadd = 'a'; + else + hexadd = 'A'; + for (i=format_width-1; i>=0; i--) { + nibble = (arg >> (4 * i)) & 0x000f; + send (action, (nibble<=9)? (nibble+'0') : (nibble-10+hexadd)); + } + } + else if (c == 'u') { + put_uint(action, arg, format_width, 0); + } + else if (c == 'l' && s[1] == 'l') { + uint64_t llval; + uint16_t __far *cp16; + + s += 2; + c = *s; + cp16 = (uint16_t __far *)&llval; + cp16[0] = arg; + cp16[1] = va_arg( args, uint16_t ); + cp16[2] = va_arg( args, uint16_t ); + cp16[3] = va_arg( args, uint16_t ); + if (c == 'x' || c == 'X') { + if (format_width == 0) + format_width = 16; + if (c == 'x') + hexadd = 'a'; + else + hexadd = 'A'; + for (i=format_width-1; i>=0; i--) { + nibble = (llval >> (i * 4)) & 0x000f; + send (action, (nibble<=9)? (nibble+'0') : (nibble-10+hexadd)); + } + } else { + BX_PANIC("bios_printf: unknown %ll format\n"); + } + } + else if (c == 'l') { + s++; + c = *s; /* is it ld,lx,lu? */ + hibyte = va_arg( args, uint16_t ); + if (c == 'd') { + if (hibyte & 0x8000) + put_luint(action, 0L-(((uint32_t) hibyte << 16) | arg), format_width-1, 1); + else + put_luint(action, ((uint32_t) hibyte << 16) | arg, format_width, 0); + } + else if (c == 'u') { + put_luint(action, ((uint32_t) hibyte << 16) | arg, format_width, 0); + } + else if (c == 'x' || c == 'X') + { + if (format_width == 0) + format_width = 8; + if (c == 'x') + hexadd = 'a'; + else + hexadd = 'A'; + for (i=format_width-1; i>=0; i--) { + nibble = ((((uint32_t)hibyte << 16) | arg) >> (4 * i)) & 0x000f; + send (action, (nibble<=9)? (nibble+'0') : (nibble-10+hexadd)); + } + } + } + else if (c == 'd') { + if (arg & 0x8000) + put_int(action, -arg, format_width - 1, 1); + else + put_int(action, arg, format_width, 0); + } + else if (c == 's') { + put_str(action, (char *)arg); + } + else if (c == 'S') { + hibyte = arg; + arg = va_arg( args, uint16_t ); + put_str(action, hibyte :> (char *)arg); + } + else if (c == 'c') { + send(action, arg); + } + else + BX_PANIC("bios_printf: unknown format\n"); + in_format = 0; + } + } + else { + send(action, c); + } + ++s; + } + va_end( args ); + if (action & BIOS_PRINTF_HALT) { + // freeze in a busy loop. + int_disable(); + halt_forever(); + } +} + +// End of printf support -- cgit v1.2.3