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128 .\" ======================================================================== |
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129 .\" |
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130 .IX Title "READELF 1" |
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131 .TH READELF 1 "2008-01-09" "binutils-2.18.50" "GNU Development Tools" |
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132 .SH "NAME" |
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133 readelf \- Displays information about ELF files. |
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134 .SH "SYNOPSIS" |
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135 .IX Header "SYNOPSIS" |
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136 readelf [\fB\-a\fR|\fB\-\-all\fR] |
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137 [\fB\-h\fR|\fB\-\-file\-header\fR] |
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138 [\fB\-l\fR|\fB\-\-program\-headers\fR|\fB\-\-segments\fR] |
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139 [\fB\-S\fR|\fB\-\-section\-headers\fR|\fB\-\-sections\fR] |
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140 [\fB\-g\fR|\fB\-\-section\-groups\fR] |
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141 [\fB\-t\fR|\fB\-\-section\-details\fR] |
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142 [\fB\-e\fR|\fB\-\-headers\fR] |
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143 [\fB\-s\fR|\fB\-\-syms\fR|\fB\-\-symbols\fR] |
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144 [\fB\-n\fR|\fB\-\-notes\fR] |
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145 [\fB\-r\fR|\fB\-\-relocs\fR] |
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146 [\fB\-u\fR|\fB\-\-unwind\fR] |
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147 [\fB\-d\fR|\fB\-\-dynamic\fR] |
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148 [\fB\-V\fR|\fB\-\-version\-info\fR] |
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149 [\fB\-A\fR|\fB\-\-arch\-specific\fR] |
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150 [\fB\-D\fR|\fB\-\-use\-dynamic\fR] |
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151 [\fB\-x\fR <number or name>|\fB\-\-hex\-dump=\fR<number or name>] |
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152 [\fB\-p\fR <number or name>|\fB\-\-string\-dump=\fR<number or name>] |
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153 [\fB\-c\fR|\fB\-\-archive\-index\fR] |
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154 [\fB\-w[liaprmfFsoR]\fR| |
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155 \fB\-\-debug\-dump\fR[=line,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames\-interp,=str,=loc,=Ranges]] |
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156 [\fB\-I\fR|\fB\-histogram\fR] |
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157 [\fB\-v\fR|\fB\-\-version\fR] |
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158 [\fB\-W\fR|\fB\-\-wide\fR] |
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159 [\fB\-H\fR|\fB\-\-help\fR] |
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160 \fIelffile\fR... |
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161 .SH "DESCRIPTION" |
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162 .IX Header "DESCRIPTION" |
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163 \&\fBreadelf\fR displays information about one or more \s-1ELF\s0 format object |
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164 files. The options control what particular information to display. |
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165 .PP |
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166 \&\fIelffile\fR... are the object files to be examined. 32\-bit and |
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167 64\-bit \s-1ELF\s0 files are supported, as are archives containing \s-1ELF\s0 files. |
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168 .PP |
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169 This program performs a similar function to \fBobjdump\fR but it |
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170 goes into more detail and it exists independently of the \s-1BFD\s0 |
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171 library, so if there is a bug in \s-1BFD\s0 then readelf will not be |
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172 affected. |
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173 .SH "OPTIONS" |
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174 .IX Header "OPTIONS" |
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175 The long and short forms of options, shown here as alternatives, are |
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176 equivalent. At least one option besides \fB\-v\fR or \fB\-H\fR must be |
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177 given. |
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178 .IP "\fB\-a\fR" 4 |
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179 .IX Item "-a" |
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180 .PD 0 |
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181 .IP "\fB\-\-all\fR" 4 |
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182 .IX Item "--all" |
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183 .PD |
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184 Equivalent to specifying \fB\-\-file\-header\fR, |
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185 \&\fB\-\-program\-headers\fR, \fB\-\-sections\fR, \fB\-\-symbols\fR, |
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186 \&\fB\-\-relocs\fR, \fB\-\-dynamic\fR, \fB\-\-notes\fR and |
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187 \&\fB\-\-version\-info\fR. |
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188 .IP "\fB\-h\fR" 4 |
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189 .IX Item "-h" |
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190 .PD 0 |
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191 .IP "\fB\-\-file\-header\fR" 4 |
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192 .IX Item "--file-header" |
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193 .PD |
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194 Displays the information contained in the \s-1ELF\s0 header at the start of the |
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195 file. |
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196 .IP "\fB\-l\fR" 4 |
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197 .IX Item "-l" |
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198 .PD 0 |
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199 .IP "\fB\-\-program\-headers\fR" 4 |
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200 .IX Item "--program-headers" |
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201 .IP "\fB\-\-segments\fR" 4 |
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202 .IX Item "--segments" |
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203 .PD |
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204 Displays the information contained in the file's segment headers, if it |
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205 has any. |
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206 .IP "\fB\-S\fR" 4 |
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207 .IX Item "-S" |
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208 .PD 0 |
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209 .IP "\fB\-\-sections\fR" 4 |
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210 .IX Item "--sections" |
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211 .IP "\fB\-\-section\-headers\fR" 4 |
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212 .IX Item "--section-headers" |
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213 .PD |
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214 Displays the information contained in the file's section headers, if it |
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215 has any. |
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216 .IP "\fB\-g\fR" 4 |
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217 .IX Item "-g" |
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218 .PD 0 |
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219 .IP "\fB\-\-section\-groups\fR" 4 |
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220 .IX Item "--section-groups" |
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221 .PD |
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222 Displays the information contained in the file's section groups, if it |
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223 has any. |
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224 .IP "\fB\-t\fR" 4 |
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225 .IX Item "-t" |
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226 .PD 0 |
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227 .IP "\fB\-\-section\-details\fR" 4 |
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228 .IX Item "--section-details" |
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229 .PD |
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230 Displays the detailed section information. Implies \fB\-S\fR. |
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231 .IP "\fB\-s\fR" 4 |
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232 .IX Item "-s" |
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233 .PD 0 |
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234 .IP "\fB\-\-symbols\fR" 4 |
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235 .IX Item "--symbols" |
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236 .IP "\fB\-\-syms\fR" 4 |
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237 .IX Item "--syms" |
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238 .PD |
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239 Displays the entries in symbol table section of the file, if it has one. |
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240 .IP "\fB\-e\fR" 4 |
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241 .IX Item "-e" |
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242 .PD 0 |
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243 .IP "\fB\-\-headers\fR" 4 |
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244 .IX Item "--headers" |
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245 .PD |
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246 Display all the headers in the file. Equivalent to \fB\-h \-l \-S\fR. |
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247 .IP "\fB\-n\fR" 4 |
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248 .IX Item "-n" |
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249 .PD 0 |
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250 .IP "\fB\-\-notes\fR" 4 |
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251 .IX Item "--notes" |
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252 .PD |
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253 Displays the contents of the \s-1NOTE\s0 segments and/or sections, if any. |
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254 .IP "\fB\-r\fR" 4 |
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255 .IX Item "-r" |
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256 .PD 0 |
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257 .IP "\fB\-\-relocs\fR" 4 |
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258 .IX Item "--relocs" |
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259 .PD |
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260 Displays the contents of the file's relocation section, if it has one. |
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261 .IP "\fB\-u\fR" 4 |
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262 .IX Item "-u" |
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263 .PD 0 |
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264 .IP "\fB\-\-unwind\fR" 4 |
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265 .IX Item "--unwind" |
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266 .PD |
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267 Displays the contents of the file's unwind section, if it has one. Only |
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268 the unwind sections for \s-1IA64\s0 \s-1ELF\s0 files are currently supported. |
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269 .IP "\fB\-d\fR" 4 |
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270 .IX Item "-d" |
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271 .PD 0 |
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272 .IP "\fB\-\-dynamic\fR" 4 |
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273 .IX Item "--dynamic" |
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274 .PD |
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275 Displays the contents of the file's dynamic section, if it has one. |
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276 .IP "\fB\-V\fR" 4 |
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277 .IX Item "-V" |
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278 .PD 0 |
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279 .IP "\fB\-\-version\-info\fR" 4 |
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280 .IX Item "--version-info" |
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281 .PD |
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282 Displays the contents of the version sections in the file, it they |
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283 exist. |
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284 .IP "\fB\-A\fR" 4 |
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285 .IX Item "-A" |
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286 .PD 0 |
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287 .IP "\fB\-\-arch\-specific\fR" 4 |
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288 .IX Item "--arch-specific" |
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289 .PD |
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290 Displays architecture-specific information in the file, if there |
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291 is any. |
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292 .IP "\fB\-D\fR" 4 |
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293 .IX Item "-D" |
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294 .PD 0 |
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295 .IP "\fB\-\-use\-dynamic\fR" 4 |
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296 .IX Item "--use-dynamic" |
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297 .PD |
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298 When displaying symbols, this option makes \fBreadelf\fR use the |
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299 symbol table in the file's dynamic section, rather than the one in the |
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300 symbols section. |
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301 .IP "\fB\-x <number or name>\fR" 4 |
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302 .IX Item "-x <number or name>" |
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303 .PD 0 |
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304 .IP "\fB\-\-hex\-dump=<number or name>\fR" 4 |
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305 .IX Item "--hex-dump=<number or name>" |
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306 .PD |
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307 Displays the contents of the indicated section as a hexadecimal dump. |
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308 A number identifies a particular section by index in the section table; |
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309 any other string identifies all sections with that name in the object file. |
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310 .IP "\fB\-p <number or name>\fR" 4 |
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311 .IX Item "-p <number or name>" |
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312 .PD 0 |
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313 .IP "\fB\-\-string\-dump=<number or name>\fR" 4 |
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314 .IX Item "--string-dump=<number or name>" |
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315 .PD |
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316 Displays the contents of the indicated section as printable strings. |
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317 A number identifies a particular section by index in the section table; |
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318 any other string identifies all sections with that name in the object file. |
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319 .IP "\fB\-c\fR" 4 |
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320 .IX Item "-c" |
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321 .PD 0 |
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322 .IP "\fB\-\-archive\-index\fR" 4 |
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323 .IX Item "--archive-index" |
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324 .PD |
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325 Displays the file symbol index infomation contained in the header part |
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326 of binary archives. Performs the same function as the \fBt\fR |
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327 command to \fBar\fR, but without using the \s-1BFD\s0 library. |
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328 .IP "\fB\-w[liaprmfFsoR]\fR" 4 |
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329 .IX Item "-w[liaprmfFsoR]" |
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330 .PD 0 |
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331 .IP "\fB\-\-debug\-dump[=line,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames\-interp,=str,=loc,=Ranges]\fR" 4 |
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332 .IX Item "--debug-dump[=line,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]" |
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333 .PD |
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334 Displays the contents of the debug sections in the file, if any are |
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335 present. If one of the optional letters or words follows the switch |
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336 then only data found in those specific sections will be dumped. |
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337 .IP "\fB\-I\fR" 4 |
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338 .IX Item "-I" |
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339 .PD 0 |
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340 .IP "\fB\-\-histogram\fR" 4 |
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341 .IX Item "--histogram" |
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342 .PD |
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343 Display a histogram of bucket list lengths when displaying the contents |
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344 of the symbol tables. |
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345 .IP "\fB\-v\fR" 4 |
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346 .IX Item "-v" |
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347 .PD 0 |
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348 .IP "\fB\-\-version\fR" 4 |
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349 .IX Item "--version" |
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350 .PD |
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351 Display the version number of readelf. |
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352 .IP "\fB\-W\fR" 4 |
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353 .IX Item "-W" |
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354 .PD 0 |
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355 .IP "\fB\-\-wide\fR" 4 |
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356 .IX Item "--wide" |
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357 .PD |
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358 Don't break output lines to fit into 80 columns. By default |
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359 \&\fBreadelf\fR breaks section header and segment listing lines for |
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360 64\-bit \s-1ELF\s0 files, so that they fit into 80 columns. This option causes |
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361 \&\fBreadelf\fR to print each section header resp. each segment one a |
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362 single line, which is far more readable on terminals wider than 80 columns. |
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363 .IP "\fB\-H\fR" 4 |
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364 .IX Item "-H" |
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365 .PD 0 |
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366 .IP "\fB\-\-help\fR" 4 |
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367 .IX Item "--help" |
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368 .PD |
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369 Display the command line options understood by \fBreadelf\fR. |
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370 .IP "\fB@\fR\fIfile\fR" 4 |
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371 .IX Item "@file" |
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372 Read command-line options from \fIfile\fR. The options read are |
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373 inserted in place of the original @\fIfile\fR option. If \fIfile\fR |
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374 does not exist, or cannot be read, then the option will be treated |
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375 literally, and not removed. |
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376 .Sp |
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377 Options in \fIfile\fR are separated by whitespace. A whitespace |
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378 character may be included in an option by surrounding the entire |
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379 option in either single or double quotes. Any character (including a |
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380 backslash) may be included by prefixing the character to be included |
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381 with a backslash. The \fIfile\fR may itself contain additional |
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382 @\fIfile\fR options; any such options will be processed recursively. |
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383 .SH "SEE ALSO" |
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384 .IX Header "SEE ALSO" |
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385 \&\fIobjdump\fR\|(1), and the Info entries for \fIbinutils\fR. |
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386 .SH "COPYRIGHT" |
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387 .IX Header "COPYRIGHT" |
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388 Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
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389 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
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390 .PP |
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391 Permission is granted to copy, distribute and/or modify this document |
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392 under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.2 |
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393 or any later version published by the Free Software Foundation; |
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394 with no Invariant Sections, with no Front-Cover Texts, and with no |
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395 Back-Cover Texts. A copy of the license is included in the |
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396 section entitled \*(L"\s-1GNU\s0 Free Documentation License\*(R". |