| 1 | /* $Id: VBoxPrintHex.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 <Library/BaseLib.h>
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| 43 |
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| 44 | #include "VBoxDebugLib.h"
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| 45 | #include "DevEFI.h"
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| 46 | #include "iprt/asm.h"
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| 47 |
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| 48 |
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| 49 | /**
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| 50 | * Prints a char.
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| 51 | * @param ch The char to print.
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| 52 | */
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| 53 | DECLINLINE(void) vboxPrintHexChar(int ch)
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| 54 | {
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| 55 | ASMOutU8(EFI_DEBUG_PORT, (uint8_t)ch);
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| 56 | }
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| 57 |
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| 58 |
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| 59 | /**
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| 60 | * Print a hex number, up to 64-bit long.
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| 61 | *
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| 62 | * @returns Number of chars printed.
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| 63 | *
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| 64 | * @param uValue The value.
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| 65 | * @param cbType The size of the value type.
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| 66 | */
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| 67 | size_t VBoxPrintHex(UINT64 uValue, size_t cbType)
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| 68 | {
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| 69 | static const char s_szHex[17] = "0123456789abcdef";
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| 70 | switch (cbType)
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| 71 | {
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| 72 | /*
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| 73 | * We have to cast the result to UINTN before indexing into the array
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| 74 | * or cl.exe insists on generating a call to __allmul for unoptimized 32bit builds,
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| 75 | * see: https://patchew.org/EDK2/[email protected]/
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| 76 | */
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| 77 | #define VAL_NIBBLE_EXTRACT(a_uValue, a_iNibbleStart) (s_szHex[(UINTN)(RShiftU64((a_uValue), (a_iNibbleStart)) & 0xf)])
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| 78 | case 8:
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| 79 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 60));
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| 80 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 56));
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| 81 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 52));
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| 82 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 48));
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| 83 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 44));
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| 84 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 40));
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| 85 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 36));
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| 86 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 32));
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| 87 | case 4:
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| 88 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 28));
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| 89 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 24));
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| 90 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 20));
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| 91 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 16));
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| 92 | case 2:
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| 93 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 12));
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| 94 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 8));
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| 95 | case 1:
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| 96 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 4));
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| 97 | vboxPrintHexChar(VAL_NIBBLE_EXTRACT(uValue, 0));
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| 98 | break;
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| 99 | #undef VAL_NIBBLE_EXTRACT
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| 100 | }
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| 101 |
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| 102 | #if 0 /* There is no MultU32x32 for 32bit and cl insists on emitting __allmul otherwise so we just hardcode everything here... */
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| 103 | return cbType * 2;
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| 104 | #else
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| 105 | static size_t s_acbPrinted[9] = { 0, 2, 4, 0, 8, 0, 0, 0, 16};
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| 106 | if (cbType < RT_ELEMENTS(s_acbPrinted))
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| 107 | return s_acbPrinted[cbType];
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| 108 | return 0;
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| 109 | #endif
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| 110 | }
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