| 1 | /* $Id: $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | *
|
|---|
| 4 | * kProfile Mark 2 - Debug Info Reader
|
|---|
| 5 | *
|
|---|
| 6 | * Copyright (c) 2006 knut st. osmundsen <bird-src-spam@anduin.net.de>
|
|---|
| 7 | *
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of kLIBC.
|
|---|
| 10 | *
|
|---|
| 11 | * kLIBC is free software; you can redistribute it and/or modify
|
|---|
| 12 | * it under the terms of the GNU General Public License as published by
|
|---|
| 13 | * the Free Software Foundation; either version 2 of the License, or
|
|---|
| 14 | * (at your option) any later version.
|
|---|
| 15 | *
|
|---|
| 16 | * kLIBC is distributed in the hope that it will be useful,
|
|---|
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 19 | * GNU General Public License for more details.
|
|---|
| 20 | *
|
|---|
| 21 | * You should have received a copy of the GNU General Public License
|
|---|
| 22 | * along with kLIBC; if not, write to the Free Software
|
|---|
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|---|
| 24 | *
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*******************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *******************************************************************************/
|
|---|
| 31 | #include <iprt/file.h>
|
|---|
| 32 | #include <iprt/string.h>
|
|---|
| 33 | #include <iprt/err.h>
|
|---|
| 34 | #include <iprt/assert.h>
|
|---|
| 35 | #include <iprt/alloc.h>
|
|---|
| 36 |
|
|---|
| 37 | #include "DBGInternal.h"
|
|---|
| 38 | #include "internal/ldrMZ.h"
|
|---|
| 39 | #include "internal/ldrPE.h"
|
|---|
| 40 |
|
|---|
| 41 |
|
|---|
| 42 |
|
|---|
| 43 | /**
|
|---|
| 44 | * Opens the debug info for a specified executable module.
|
|---|
| 45 | *
|
|---|
| 46 | * @returns IPRT status code.
|
|---|
| 47 | * @param pszModulePath The path to the executable module.
|
|---|
| 48 | * @param ppDbgMod Where to store the debug module handle.
|
|---|
| 49 | */
|
|---|
| 50 | RTDECL(int) RTDbgModuleOpen(const char *pszModulePath, PRTDBGMOD *ppDbgMod)
|
|---|
| 51 | {
|
|---|
| 52 | /*
|
|---|
| 53 | * Validate input.
|
|---|
| 54 | */
|
|---|
| 55 | AssertMsgReturn(VALID_PTR(pszModulePath), ("%p\n", pszModulePath), VERR_INVALID_POINTER);
|
|---|
| 56 | AssertMsgReturn(*pszModulePath, ("%p\n", pszModulePath), VERR_INVALID_PARAMETER);
|
|---|
| 57 | AssertMsgReturn(VALID_PTR(ppDbgMod), ("%p\n", ppDbgMod), VERR_INVALID_POINTER);
|
|---|
| 58 | *ppDbgMod = NULL;
|
|---|
| 59 |
|
|---|
| 60 | /*
|
|---|
| 61 | * The file and try figure out the format.
|
|---|
| 62 | */
|
|---|
| 63 | RTFILE File;
|
|---|
| 64 | int rc = RTFileOpen(&File, pszModulePath, RTFILE_O_READ | RTFILE_O_DENY_WRITE | RTFILE_O_OPEN);
|
|---|
| 65 | if (RT_FAILURE(rc))
|
|---|
| 66 | return rc;
|
|---|
| 67 |
|
|---|
| 68 | RTFOFF offHdr = 0;
|
|---|
| 69 | union
|
|---|
| 70 | {
|
|---|
| 71 | uint32_t au32[4];
|
|---|
| 72 | uint16_t au16[8];
|
|---|
| 73 | uint8_t ab[16];
|
|---|
| 74 | } Buf;
|
|---|
| 75 | rc = RTFileRead(File, &Buf, sizeof(Buf), NULL);
|
|---|
| 76 | if ( RT_SUCCESS(rc)
|
|---|
| 77 | && Buf.au16[0] == IMAGE_DOS_SIGNATURE)
|
|---|
| 78 | {
|
|---|
| 79 | /* new header? */
|
|---|
| 80 | uint32_t offNewHeader;
|
|---|
| 81 | rc = RTFileReadAt(File, OFFSETOF(IMAGE_DOS_HEADER, e_lfanew), &offNewHeader, sizeof(offNewHeader), NULL);
|
|---|
| 82 | if (RT_SUCCESS(rc) && offNewHeader)
|
|---|
| 83 | {
|
|---|
| 84 | offHdr = offNewHeader;
|
|---|
| 85 | rc = RTFileReadAt(File, offNewHeader, &Buf, sizeof(Buf), NULL);
|
|---|
| 86 | }
|
|---|
| 87 | }
|
|---|
| 88 | if (RT_SUCCESS(rc))
|
|---|
| 89 | {
|
|---|
| 90 | if (Buf.au16[0] == IMAGE_DOS_SIGNATURE)
|
|---|
| 91 | rc = VERR_NOT_SUPPORTED;
|
|---|
| 92 | #ifdef IMAGE_NE_SIGNATURE
|
|---|
| 93 | else if (Buf.au16[0] == IMAGE_NE_SIGNATURE)
|
|---|
| 94 | rc = VERR_NOT_SUPPORTED;
|
|---|
| 95 | #endif
|
|---|
| 96 | #ifdef IMAGE_LX_SIGNATURE
|
|---|
| 97 | else if (Buf.au16[0] == IMAGE_LX_SIGNATURE)
|
|---|
| 98 | rc = VERR_NOT_SUPPORTED;
|
|---|
| 99 | #endif
|
|---|
| 100 | #ifdef IMAGE_LE_SIGNATURE
|
|---|
| 101 | else if (Buf.au16[0] == IMAGE_LE_SIGNATURE)
|
|---|
| 102 | rc = VERR_NOT_SUPPORTED;
|
|---|
| 103 | #endif
|
|---|
| 104 | #ifdef IMAGE_ELF_SIGNATURE
|
|---|
| 105 | else if (Buf.au32[0] == IMAGE_ELF_SIGNATURE)
|
|---|
| 106 | rc = VERR_NOT_SUPPORTED;
|
|---|
| 107 | #endif
|
|---|
| 108 | #ifdef IMAGE_NT_SIGNATURE
|
|---|
| 109 | else if (Buf.au32[0] == IMAGE_NT_SIGNATURE)
|
|---|
| 110 | rc = rtDbgModPEOpen(File, offHdr, pszModulePath, ppDbgMod);
|
|---|
| 111 | #endif
|
|---|
| 112 | /** @todo there are a number of text file formats too which I want to support. */
|
|---|
| 113 | else
|
|---|
| 114 | rc = VERR_NOT_SUPPORTED;
|
|---|
| 115 |
|
|---|
| 116 | }
|
|---|
| 117 |
|
|---|
| 118 | if (RT_FAILURE(rc))
|
|---|
| 119 | RTFileClose(File);
|
|---|
| 120 | return rc;
|
|---|
| 121 | }
|
|---|
| 122 |
|
|---|
| 123 |
|
|---|
| 124 | /**
|
|---|
| 125 | * Validates a debug module handle.
|
|---|
| 126 | * All necessary asserting will be taken care of here.
|
|---|
| 127 | *
|
|---|
| 128 | * @returns True / false.
|
|---|
| 129 | * @param pMod The debug module handle.
|
|---|
| 130 | */
|
|---|
| 131 | DECLINLINE(bool) rtDbgModIsValid(PRTDBGMOD pMod)
|
|---|
| 132 | {
|
|---|
| 133 | AssertMsgReturn(VALID_PTR(pMod), ("%p", pMod), false);
|
|---|
| 134 | AssertMsgReturn(pMod->u32Magic == RTDBGMOD_MAGIC, ("%RX32", pMod->u32Magic), false);
|
|---|
| 135 | AssertMsgReturn(VALID_PTR(pMod->pOps), ("%p", pMod->pOps), false);
|
|---|
| 136 | return true;
|
|---|
| 137 | }
|
|---|
| 138 |
|
|---|
| 139 |
|
|---|
| 140 | /**
|
|---|
| 141 | * Closes the module.
|
|---|
| 142 | *
|
|---|
| 143 | * @returns IPRT status code.
|
|---|
| 144 | * @param pMod The module handle.
|
|---|
| 145 | */
|
|---|
| 146 | RTDECL(int) RTDbgModuleClose(PRTDBGMOD pMod)
|
|---|
| 147 | {
|
|---|
| 148 | if (!rtDbgModIsValid(pMod))
|
|---|
| 149 | return VERR_INVALID_PARAMETER;
|
|---|
| 150 |
|
|---|
| 151 | int rc = pMod->pOps->pfnClose(pMod);
|
|---|
| 152 | if (RT_SUCCESS(rc))
|
|---|
| 153 | RTMemFree(pMod);
|
|---|
| 154 | return rc;
|
|---|
| 155 | }
|
|---|
| 156 |
|
|---|
| 157 |
|
|---|
| 158 | /**
|
|---|
| 159 | * Gets a symbol by segment:offset.
|
|---|
| 160 | * This will be approximated to the nearest symbol if there is no exact match.
|
|---|
| 161 | *
|
|---|
| 162 | * @returns IPRT status code.
|
|---|
| 163 | * @param pMod The module.
|
|---|
| 164 | * @param iSegment The segment this offset is relative to.
|
|---|
| 165 | * The -1 segment is special, it means that the addres is relative to
|
|---|
| 166 | * the image base. The image base is where the first bit of the image
|
|---|
| 167 | * is mapped during load.
|
|---|
| 168 | * @param off The offset into the segment.
|
|---|
| 169 | * @param pSym Where to store the symbol details.
|
|---|
| 170 | */
|
|---|
| 171 | RTDECL(int) RTDbgModuleQuerySymbol(PRTDBGMOD pMod, int32_t iSegment, RTUINTPTR off, PRTDBGSYMBOL pSym)
|
|---|
| 172 | {
|
|---|
| 173 | if (!rtDbgModIsValid(pMod))
|
|---|
| 174 | return VERR_INVALID_PARAMETER;
|
|---|
| 175 | AssertMsgReturn(VALID_PTR(pSym), ("%p", pSym), VERR_INVALID_POINTER);
|
|---|
| 176 |
|
|---|
| 177 | return pMod->pOps->pfnQuerySymbol(pMod, iSegment, off, pSym);
|
|---|
| 178 | }
|
|---|
| 179 |
|
|---|
| 180 |
|
|---|
| 181 | /**
|
|---|
| 182 | * Gets & allocates a symbol by segment:offset.
|
|---|
| 183 | * This will be approximated to the nearest symbol if there is no exact match.
|
|---|
| 184 | *
|
|---|
| 185 | * @returns IPRT status code.
|
|---|
| 186 | * @param pMod The module.
|
|---|
| 187 | * @param iSegment The segment this offset is relative to.
|
|---|
| 188 | * The -1 segment is special, it means that the addres is relative to
|
|---|
| 189 | * the image base. The image base is where the first bit of the image
|
|---|
| 190 | * is mapped during load.
|
|---|
| 191 | * @param off The offset into the segment.
|
|---|
| 192 | * @param ppSym Where to store the pointer to the symbol info.
|
|---|
| 193 | * Free the returned symbol using RTDbgSymbolFree().
|
|---|
| 194 | */
|
|---|
| 195 | RTDECL(int) RTDbgModuleQuerySymbolA(PRTDBGMOD pMod, int32_t iSegment, RTUINTPTR off, PPRTDBGSYMBOL ppSym)
|
|---|
| 196 | {
|
|---|
| 197 | AssertMsgReturn(VALID_PTR(ppSym), ("%p\n", ppSym), VERR_INVALID_POINTER);
|
|---|
| 198 |
|
|---|
| 199 | RTDBGSYMBOL Sym;
|
|---|
| 200 | int rc = RTDbgModuleQuerySymbol(pMod, iSegment, off, &Sym);
|
|---|
| 201 | if (RT_SUCCESS(rc))
|
|---|
| 202 | {
|
|---|
| 203 | *ppSym = RTDbgSymbolDup(&Sym);
|
|---|
| 204 | if (!*ppSym)
|
|---|
| 205 | rc = VERR_NO_MEMORY;
|
|---|
| 206 | }
|
|---|
| 207 | else
|
|---|
| 208 | *ppSym = NULL;
|
|---|
| 209 | return rc;
|
|---|
| 210 | }
|
|---|
| 211 |
|
|---|
| 212 |
|
|---|
| 213 | /**
|
|---|
| 214 | * Gets a line number entry by segment:offset.
|
|---|
| 215 | * This will be approximated to the nearest line number there is no exact match.
|
|---|
| 216 | *
|
|---|
| 217 | * @returns IPRT status code.
|
|---|
| 218 | * @param pMod The module.
|
|---|
| 219 | * @param iSegment The segment this offset is relative to.
|
|---|
| 220 | * The -1 segment is special, it means that the addres is relative to
|
|---|
| 221 | * the image base. The image base is where the first bit of the image
|
|---|
| 222 | * is mapped during load.
|
|---|
| 223 | * @param off The offset into the segment.
|
|---|
| 224 | * @param pLine Where to store the line number details.
|
|---|
| 225 | */
|
|---|
| 226 | RTDECL(int) RTDbgModuleQueryLine(PRTDBGMOD pMod, int32_t iSegment, RTUINTPTR off, PRTDBGLINE pLine)
|
|---|
| 227 | {
|
|---|
| 228 | if (!rtDbgModIsValid(pMod))
|
|---|
| 229 | return VERR_INVALID_PARAMETER;
|
|---|
| 230 | AssertMsgReturn(VALID_PTR(pLine), ("%p", pLine), VERR_INVALID_POINTER);
|
|---|
| 231 |
|
|---|
| 232 | return pMod->pOps->pfnQueryLine(pMod, iSegment, off, pLine);
|
|---|
| 233 | }
|
|---|
| 234 |
|
|---|
| 235 |
|
|---|
| 236 | /**
|
|---|
| 237 | * Gets & allocates a line number entry by segment:offset.
|
|---|
| 238 | * This will be approximated to the nearest line number there is no exact match.
|
|---|
| 239 | *
|
|---|
| 240 | * @returns IPRT status code.
|
|---|
| 241 | * @param pMod The module.
|
|---|
| 242 | * @param iSegment The segment this offset is relative to.
|
|---|
| 243 | * The -1 segment is special, it means that the addres is relative to
|
|---|
| 244 | * the image base. The image base is where the first bit of the image
|
|---|
| 245 | * is mapped during load.
|
|---|
| 246 | * @param off The offset into the segment.
|
|---|
| 247 | * @param ppLine Where to store the pointer to the line number info.
|
|---|
| 248 | * Free the returned line number using RTDbgLineFree().
|
|---|
| 249 | */
|
|---|
| 250 | RTDECL(int) RTDbgModuleQueryLineA(PRTDBGMOD pMod, int32_t iSegment, RTUINTPTR off, PPRTDBGLINE ppLine)
|
|---|
| 251 | {
|
|---|
| 252 | AssertMsgReturn(VALID_PTR(ppLine), ("%p\n", ppLine), VERR_INVALID_POINTER);
|
|---|
| 253 |
|
|---|
| 254 | RTDBGLINE Line;
|
|---|
| 255 | int rc = RTDbgModuleQueryLine(pMod, iSegment, off, &Line);
|
|---|
| 256 | if (RT_SUCCESS(rc))
|
|---|
| 257 | {
|
|---|
| 258 | *ppLine = RTDbgLineDup(&Line);
|
|---|
| 259 | if (!*ppLine)
|
|---|
| 260 | rc = VERR_NO_MEMORY;
|
|---|
| 261 | }
|
|---|
| 262 | else
|
|---|
| 263 | *ppLine = NULL;
|
|---|
| 264 | return rc;
|
|---|
| 265 | }
|
|---|
| 266 |
|
|---|
