| 1 | /* $Id: VBoxPrintHexDump.c 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxPrintHex.c - Implementation of the VBoxPrintHex() debug logging routine.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 |
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| 39 | /*********************************************************************************************************************************
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| 40 | * Header Files *
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| 41 | *********************************************************************************************************************************/
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| 42 | #include "VBoxDebugLib.h"
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| 43 | #include "DevEFI.h"
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| 44 | #include "iprt/asm.h"
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| 45 | #include "iprt/ctype.h"
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| 46 |
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| 47 |
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| 48 | /**
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| 49 | * Prints a char.
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| 50 | * @returns 1.
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| 51 | * @param ch The char to print.
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| 52 | */
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| 53 | DECLINLINE(int) vboxPrintHexDumpChar(int ch)
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| 54 | {
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| 55 | ASMOutU8(EFI_DEBUG_PORT, (uint8_t)ch);
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| 56 | return 1;
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| 57 | }
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| 58 |
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| 59 |
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| 60 | /**
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| 61 | * Prints a hex dump the specified memory block.
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| 62 | *
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| 63 | * @returns Number of bytes printed.
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| 64 | *
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| 65 | * @param pv The memory to dump.
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| 66 | * @param cb Number of bytes to dump.
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| 67 | */
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| 68 | size_t VBoxPrintHexDump(const void *pv, size_t cb)
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| 69 | {
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| 70 | size_t cchPrinted = 0;
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| 71 | uint8_t const *pb = (uint8_t const *)pv;
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| 72 | while (cb > 0)
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| 73 | {
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| 74 | unsigned i;
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| 75 |
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| 76 | /* the offset */
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| 77 | cchPrinted += VBoxPrintHex((uintptr_t)pb, sizeof(pb));
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| 78 | cchPrinted += VBoxPrintString(" ");
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| 79 |
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| 80 | /* the hex bytes value. */
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| 81 | for (i = 0; i < 16; i++)
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| 82 | {
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| 83 | cchPrinted += vboxPrintHexDumpChar(i == 7 ? '-' : ' ');
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| 84 | if (i < cb)
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| 85 | cchPrinted += VBoxPrintHex(pb[i], 1);
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| 86 | else
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| 87 | cchPrinted += VBoxPrintString(" ");
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| 88 | }
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| 89 |
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| 90 | /* the printable chars */
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| 91 | cchPrinted += VBoxPrintString(" ");
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| 92 | for (i = 0; i < 16 && i < cb; i++)
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| 93 | cchPrinted += vboxPrintHexDumpChar(RT_C_IS_PRINT(pb[i])
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| 94 | ? pb[i]
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| 95 | : '.');
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| 96 |
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| 97 | /* finally, the new line. */
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| 98 | cchPrinted += vboxPrintHexDumpChar('\n');
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| 99 |
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| 100 | /*
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| 101 | * Advance.
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| 102 | */
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| 103 | if (cb <= 16)
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| 104 | break;
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| 105 | cb -= 16;
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| 106 | pb += 16;
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| 107 | }
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| 108 |
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| 109 | return cchPrinted;
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| 110 | }
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| 111 |
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