| 1 | /* $Id: DBGCFunctions.cpp 69500 2017-10-28 15:14:05Z vboxsync $ */
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| 2 | /** @file
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| 3 | * DBGC - Debugger Console, Native Functions.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2017 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | /*********************************************************************************************************************************
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| 20 | * Header Files *
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| 21 | *********************************************************************************************************************************/
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| 22 | #define LOG_GROUP LOG_GROUP_DBGC
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| 23 | #include <VBox/dbg.h>
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| 24 | #include <VBox/vmm/dbgf.h>
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| 25 | #include <VBox/err.h>
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| 26 | #include <VBox/log.h>
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| 27 |
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| 28 | #include <iprt/assert.h>
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| 29 | #include <iprt/rand.h>
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| 30 | #include <iprt/string.h>
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| 31 |
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| 32 | #include "DBGCInternal.h"
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| 33 |
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| 34 |
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| 35 |
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| 36 | /*********************************************************************************************************************************
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| 37 | * Global Variables *
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| 38 | *********************************************************************************************************************************/
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| 39 | /** Pointer to head of the list of exteranl functions. */
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| 40 | static PDBGCEXTFUNCS g_pExtFuncsHead;
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| 41 |
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| 42 |
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| 43 |
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| 44 |
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| 45 | /**
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| 46 | * @callback_method_impl{FNDBGCFUNC, The randu32() function implementation.}
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| 47 | */
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| 48 | static DECLCALLBACK(int) dbgcFuncRandU32(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
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| 49 | PDBGCVAR pResult)
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| 50 | {
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| 51 | AssertReturn(cArgs == 0, VERR_DBGC_PARSE_BUG);
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| 52 | uint32_t u32 = RTRandU32();
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| 53 | DBGCVAR_INIT_NUMBER(pResult, u32);
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| 54 | NOREF(pFunc); NOREF(pCmdHlp); NOREF(pUVM); NOREF(paArgs);
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| 55 | return VINF_SUCCESS;
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| 56 | }
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| 57 |
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| 58 |
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| 59 | /** Functions descriptors for the basic functions. */
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| 60 | const DBGCFUNC g_aDbgcFuncs[] =
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| 61 | {
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| 62 | /* pszCmd, cArgsMin, cArgsMax, paArgDescs, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
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| 63 | { "randu32", 0, 0, NULL, 0, 0, dbgcFuncRandU32, "", "Returns an unsigned 32-bit random number." },
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| 64 | };
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| 65 |
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| 66 | /** The number of function descriptions in g_aDbgcFuncs. */
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| 67 | const uint32_t g_cDbgcFuncs = RT_ELEMENTS(g_aDbgcFuncs);
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| 68 |
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| 69 |
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| 70 | /**
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| 71 | * Looks up a function.
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| 72 | *
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| 73 | * @returns Pointer to the function descriptor on success, NULL if not found.
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| 74 | * @param pDbgc The DBGC instance.
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| 75 | * @param pachName The first charater in the name.
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| 76 | * @param cchName The length of the function name.
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| 77 | * @param fExternal Whether it's an external function.
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| 78 | */
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| 79 | PCDBGCFUNC dbgcFunctionLookup(PDBGC pDbgc, const char *pachName, size_t cchName, bool fExternal)
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| 80 | {
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| 81 | if (!fExternal)
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| 82 | {
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| 83 | /* emulation first, so commands can be overloaded (info ++). */
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| 84 | PCDBGCFUNC pFunc = pDbgc->paEmulationFuncs;
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| 85 | uint32_t cLeft = pDbgc->cEmulationFuncs;
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| 86 | while (cLeft-- > 0)
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| 87 | {
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| 88 | if ( !strncmp(pachName, pFunc->pszFuncNm, cchName)
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| 89 | && !pFunc->pszFuncNm[cchName])
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| 90 | return pFunc;
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| 91 | pFunc++;
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| 92 | }
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| 93 |
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| 94 | for (uint32_t iFunc = 0; iFunc < RT_ELEMENTS(g_aDbgcFuncs); iFunc++)
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| 95 | {
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| 96 | if ( !strncmp(pachName, g_aDbgcFuncs[iFunc].pszFuncNm, cchName)
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| 97 | && !g_aDbgcFuncs[iFunc].pszFuncNm[cchName])
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| 98 | return &g_aDbgcFuncs[iFunc];
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| 99 | }
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| 100 | }
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| 101 | else
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| 102 | {
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| 103 | DBGCEXTLISTS_LOCK_RD();
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| 104 | for (PDBGCEXTFUNCS pExtFuncs = g_pExtFuncsHead; pExtFuncs; pExtFuncs = pExtFuncs->pNext)
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| 105 | {
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| 106 | for (uint32_t iFunc = 0; iFunc < pExtFuncs->cFuncs; iFunc++)
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| 107 | {
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| 108 | if ( !strncmp(pachName, pExtFuncs->paFuncs[iFunc].pszFuncNm, cchName)
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| 109 | && !pExtFuncs->paFuncs[iFunc].pszFuncNm[cchName])
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| 110 | return &pExtFuncs->paFuncs[iFunc];
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| 111 | }
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| 112 | }
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| 113 | DBGCEXTLISTS_UNLOCK_RD();
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| 114 | }
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| 115 |
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| 116 | return NULL;
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| 117 | }
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| 118 |
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