| d071fb19 |
1 | /** @file\r |
| 2 | Fixes Intel Itanium(TM) specific relocation types.\r |
| 3 | \r |
| 4 | Copyright (c) 2006, Intel Corporation\r |
| 5 | All rights reserved. This program and the accompanying materials\r |
| 6 | are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | which accompanies this distribution. The full text of the license may be found at\r |
| 8 | http://opensource.org/licenses/bsd-license.php\r |
| 9 | \r |
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| 12 | \r |
| 13 | Module Name: PeCoffLoaderEx.c\r |
| 14 | \r |
| 15 | **/\r |
| 16 | \r |
| d071fb19 |
17 | #include "BasePeCoffLibInternals.h"\r |
| 18 | \r |
| 19 | \r |
| 20 | \r |
| 21 | #define EXT_IMM64(Value, Address, Size, InstPos, ValPos) \\r |
| 22 | Value |= (((UINT64)((*(Address) >> InstPos) & (((UINT64)1 << Size) - 1))) << ValPos)\r |
| 23 | \r |
| 24 | #define INS_IMM64(Value, Address, Size, InstPos, ValPos) \\r |
| 25 | *(UINT32*)Address = (*(UINT32*)Address & ~(((1 << Size) - 1) << InstPos)) | \\r |
| 26 | ((UINT32)((((UINT64)Value >> ValPos) & (((UINT64)1 << Size) - 1))) << InstPos)\r |
| 27 | \r |
| 28 | #define IMM64_IMM7B_INST_WORD_X 3\r |
| 29 | #define IMM64_IMM7B_SIZE_X 7\r |
| 30 | #define IMM64_IMM7B_INST_WORD_POS_X 4\r |
| 31 | #define IMM64_IMM7B_VAL_POS_X 0\r |
| 32 | \r |
| 33 | #define IMM64_IMM9D_INST_WORD_X 3\r |
| 34 | #define IMM64_IMM9D_SIZE_X 9\r |
| 35 | #define IMM64_IMM9D_INST_WORD_POS_X 18\r |
| 36 | #define IMM64_IMM9D_VAL_POS_X 7\r |
| 37 | \r |
| 38 | #define IMM64_IMM5C_INST_WORD_X 3\r |
| 39 | #define IMM64_IMM5C_SIZE_X 5\r |
| 40 | #define IMM64_IMM5C_INST_WORD_POS_X 13\r |
| 41 | #define IMM64_IMM5C_VAL_POS_X 16\r |
| 42 | \r |
| 43 | #define IMM64_IC_INST_WORD_X 3\r |
| 44 | #define IMM64_IC_SIZE_X 1\r |
| 45 | #define IMM64_IC_INST_WORD_POS_X 12\r |
| 46 | #define IMM64_IC_VAL_POS_X 21\r |
| 47 | \r |
| 48 | #define IMM64_IMM41a_INST_WORD_X 1\r |
| 49 | #define IMM64_IMM41a_SIZE_X 10\r |
| 50 | #define IMM64_IMM41a_INST_WORD_POS_X 14\r |
| 51 | #define IMM64_IMM41a_VAL_POS_X 22\r |
| 52 | \r |
| 53 | #define IMM64_IMM41b_INST_WORD_X 1\r |
| 54 | #define IMM64_IMM41b_SIZE_X 8\r |
| 55 | #define IMM64_IMM41b_INST_WORD_POS_X 24\r |
| 56 | #define IMM64_IMM41b_VAL_POS_X 32\r |
| 57 | \r |
| 58 | #define IMM64_IMM41c_INST_WORD_X 2\r |
| 59 | #define IMM64_IMM41c_SIZE_X 23\r |
| 60 | #define IMM64_IMM41c_INST_WORD_POS_X 0\r |
| 61 | #define IMM64_IMM41c_VAL_POS_X 40\r |
| 62 | \r |
| 63 | #define IMM64_SIGN_INST_WORD_X 3\r |
| 64 | #define IMM64_SIGN_SIZE_X 1\r |
| 65 | #define IMM64_SIGN_INST_WORD_POS_X 27\r |
| 66 | #define IMM64_SIGN_VAL_POS_X 63\r |
| 67 | \r |
| 68 | /**\r |
| 69 | Performs an Itanium-based specific relocation fixup.\r |
| 70 | \r |
| 71 | @param Reloc Pointer to the relocation record.\r |
| 72 | @param Fixup Pointer to the address to fix up.\r |
| 73 | @param FixupData Pointer to a buffer to log the fixups.\r |
| 74 | @param Adjust The offset to adjust the fixup.\r |
| 75 | \r |
| 76 | @return Status code.\r |
| 77 | \r |
| 78 | **/\r |
| 79 | RETURN_STATUS\r |
| 80 | PeCoffLoaderRelocateImageEx (\r |
| 81 | IN UINT16 *Reloc,\r |
| 82 | IN OUT CHAR8 *Fixup,\r |
| 83 | IN OUT CHAR8 **FixupData,\r |
| 84 | IN UINT64 Adjust\r |
| 85 | )\r |
| 86 | {\r |
| 87 | UINT64 *F64;\r |
| 88 | UINT64 FixupVal;\r |
| 89 | \r |
| 90 | switch ((*Reloc) >> 12) {\r |
| 91 | case EFI_IMAGE_REL_BASED_IA64_IMM64:\r |
| 92 | \r |
| 93 | //\r |
| 94 | // Align it to bundle address before fixing up the\r |
| 95 | // 64-bit immediate value of the movl instruction.\r |
| 96 | //\r |
| 97 | \r |
| 98 | Fixup = (CHAR8 *)((UINTN) Fixup & (UINTN) ~(15));\r |
| 99 | FixupVal = (UINT64)0;\r |
| 100 | \r |
| 101 | //\r |
| 102 | // Extract the lower 32 bits of IMM64 from bundle\r |
| 103 | //\r |
| 104 | EXT_IMM64(FixupVal,\r |
| 105 | (UINT32 *)Fixup + IMM64_IMM7B_INST_WORD_X,\r |
| 106 | IMM64_IMM7B_SIZE_X,\r |
| 107 | IMM64_IMM7B_INST_WORD_POS_X,\r |
| 108 | IMM64_IMM7B_VAL_POS_X\r |
| 109 | );\r |
| 110 | \r |
| 111 | EXT_IMM64(FixupVal,\r |
| 112 | (UINT32 *)Fixup + IMM64_IMM9D_INST_WORD_X,\r |
| 113 | IMM64_IMM9D_SIZE_X,\r |
| 114 | IMM64_IMM9D_INST_WORD_POS_X,\r |
| 115 | IMM64_IMM9D_VAL_POS_X\r |
| 116 | );\r |
| 117 | \r |
| 118 | EXT_IMM64(FixupVal,\r |
| 119 | (UINT32 *)Fixup + IMM64_IMM5C_INST_WORD_X,\r |
| 120 | IMM64_IMM5C_SIZE_X,\r |
| 121 | IMM64_IMM5C_INST_WORD_POS_X,\r |
| 122 | IMM64_IMM5C_VAL_POS_X\r |
| 123 | );\r |
| 124 | \r |
| 125 | EXT_IMM64(FixupVal,\r |
| 126 | (UINT32 *)Fixup + IMM64_IC_INST_WORD_X,\r |
| 127 | IMM64_IC_SIZE_X,\r |
| 128 | IMM64_IC_INST_WORD_POS_X,\r |
| 129 | IMM64_IC_VAL_POS_X\r |
| 130 | );\r |
| 131 | \r |
| 132 | EXT_IMM64(FixupVal,\r |
| 133 | (UINT32 *)Fixup + IMM64_IMM41a_INST_WORD_X,\r |
| 134 | IMM64_IMM41a_SIZE_X,\r |
| 135 | IMM64_IMM41a_INST_WORD_POS_X,\r |
| 136 | IMM64_IMM41a_VAL_POS_X\r |
| 137 | );\r |
| 138 | \r |
| 139 | //\r |
| 140 | // Update 64-bit address\r |
| 141 | //\r |
| 142 | FixupVal += Adjust;\r |
| 143 | \r |
| 144 | //\r |
| 145 | // Insert IMM64 into bundle\r |
| 146 | //\r |
| 147 | INS_IMM64(FixupVal,\r |
| 148 | ((UINT32 *)Fixup + IMM64_IMM7B_INST_WORD_X),\r |
| 149 | IMM64_IMM7B_SIZE_X,\r |
| 150 | IMM64_IMM7B_INST_WORD_POS_X,\r |
| 151 | IMM64_IMM7B_VAL_POS_X\r |
| 152 | );\r |
| 153 | \r |
| 154 | INS_IMM64(FixupVal,\r |
| 155 | ((UINT32 *)Fixup + IMM64_IMM9D_INST_WORD_X),\r |
| 156 | IMM64_IMM9D_SIZE_X,\r |
| 157 | IMM64_IMM9D_INST_WORD_POS_X,\r |
| 158 | IMM64_IMM9D_VAL_POS_X\r |
| 159 | );\r |
| 160 | \r |
| 161 | INS_IMM64(FixupVal,\r |
| 162 | ((UINT32 *)Fixup + IMM64_IMM5C_INST_WORD_X),\r |
| 163 | IMM64_IMM5C_SIZE_X,\r |
| 164 | IMM64_IMM5C_INST_WORD_POS_X,\r |
| 165 | IMM64_IMM5C_VAL_POS_X\r |
| 166 | );\r |
| 167 | \r |
| 168 | INS_IMM64(FixupVal,\r |
| 169 | ((UINT32 *)Fixup + IMM64_IC_INST_WORD_X),\r |
| 170 | IMM64_IC_SIZE_X,\r |
| 171 | IMM64_IC_INST_WORD_POS_X,\r |
| 172 | IMM64_IC_VAL_POS_X\r |
| 173 | );\r |
| 174 | \r |
| 175 | INS_IMM64(FixupVal,\r |
| 176 | ((UINT32 *)Fixup + IMM64_IMM41a_INST_WORD_X),\r |
| 177 | IMM64_IMM41a_SIZE_X,\r |
| 178 | IMM64_IMM41a_INST_WORD_POS_X,\r |
| 179 | IMM64_IMM41a_VAL_POS_X\r |
| 180 | );\r |
| 181 | \r |
| 182 | INS_IMM64(FixupVal,\r |
| 183 | ((UINT32 *)Fixup + IMM64_IMM41b_INST_WORD_X),\r |
| 184 | IMM64_IMM41b_SIZE_X,\r |
| 185 | IMM64_IMM41b_INST_WORD_POS_X,\r |
| 186 | IMM64_IMM41b_VAL_POS_X\r |
| 187 | );\r |
| 188 | \r |
| 189 | INS_IMM64(FixupVal,\r |
| 190 | ((UINT32 *)Fixup + IMM64_IMM41c_INST_WORD_X),\r |
| 191 | IMM64_IMM41c_SIZE_X,\r |
| 192 | IMM64_IMM41c_INST_WORD_POS_X,\r |
| 193 | IMM64_IMM41c_VAL_POS_X\r |
| 194 | );\r |
| 195 | \r |
| 196 | INS_IMM64(FixupVal,\r |
| 197 | ((UINT32 *)Fixup + IMM64_SIGN_INST_WORD_X),\r |
| 198 | IMM64_SIGN_SIZE_X,\r |
| 199 | IMM64_SIGN_INST_WORD_POS_X,\r |
| 200 | IMM64_SIGN_VAL_POS_X\r |
| 201 | );\r |
| 202 | \r |
| 203 | F64 = (UINT64 *) Fixup;\r |
| 204 | if (*FixupData != NULL) {\r |
| 205 | *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));\r |
| 206 | *(UINT64 *)(*FixupData) = *F64;\r |
| 207 | *FixupData = *FixupData + sizeof(UINT64);\r |
| 208 | }\r |
| 209 | break;\r |
| 210 | \r |
| 211 | default:\r |
| 212 | return RETURN_UNSUPPORTED;\r |
| 213 | }\r |
| 214 | \r |
| 215 | return RETURN_SUCCESS;\r |
| 216 | }\r |
| 217 | \r |
| 218 | /**\r |
| 219 | Returns TRUE if the machine type of PE/COFF image is supported. Supported\r |
| 220 | does not mean the image can be executed it means the PE/COFF loader supports\r |
| 221 | loading and relocating of the image type. It's up to the caller to support\r |
| 222 | the entry point.\r |
| 223 | \r |
| 224 | This function implies the basic PE/COFF loader/relocator supports IA32, EBC,\r |
| 225 | & X64 images. Calling the entry point in a correct mannor is up to the\r |
| 226 | consumer of this library. This version also supports the special relocations\r |
| 227 | for Itanium.\r |
| 228 | \r |
| 229 | @param Machine Machine type from the PE Header.\r |
| 230 | \r |
| 231 | @return TRUE if this PE/COFF loader can load the image\r |
| 232 | \r |
| 233 | **/\r |
| 234 | BOOLEAN\r |
| 235 | PeCoffLoaderImageFormatSupported (\r |
| 236 | IN UINT16 Machine\r |
| 237 | )\r |
| 238 | {\r |
| 239 | if ((Machine == EFI_IMAGE_MACHINE_IPF) || (Machine == EFI_IMAGE_MACHINE_IA32) ||\r |
| 240 | (Machine == EFI_IMAGE_MACHINE_EBC) || (Machine == EFI_IMAGE_MACHINE_X64)) {\r |
| 241 | return TRUE;\r |
| 242 | }\r |
| 243 | \r |
| 244 | return FALSE;\r |
| 245 | }\r |
| 246 | \r |
| 247 | \r |
| 248 | /**\r |
| 249 | ImageRead function that operates on a memory buffer whos base is passed into\r |
| 250 | FileHandle.\r |
| 251 | \r |
| 252 | @param Reloc Ponter to baes of the input stream\r |
| 253 | @param Fixup Offset to the start of the buffer\r |
| 254 | @param FixupData Number of bytes to copy into the buffer\r |
| 255 | @param Adjust Location to place results of read\r |
| 256 | \r |
| 257 | @retval RETURN_SUCCESS Data is read from FileOffset from the Handle into\r |
| 258 | the buffer.\r |
| 259 | **/\r |
| 260 | RETURN_STATUS\r |
| 261 | PeHotRelocateImageEx (\r |
| 262 | IN UINT16 *Reloc,\r |
| 263 | IN OUT CHAR8 *Fixup,\r |
| 264 | IN OUT CHAR8 **FixupData,\r |
| 265 | IN UINT64 Adjust\r |
| 266 | )\r |
| 267 | {\r |
| 268 | UINT64 *F64;\r |
| 269 | UINT64 FixupVal;\r |
| 270 | \r |
| 271 | switch ((*Reloc) >> 12) {\r |
| 272 | case EFI_IMAGE_REL_BASED_DIR64:\r |
| 273 | F64 = (UINT64 *) Fixup;\r |
| 274 | *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT64));\r |
| 275 | if (*(UINT64 *) (*FixupData) == *F64) {\r |
| 276 | *F64 = *F64 + (UINT64) Adjust;\r |
| 277 | }\r |
| 278 | \r |
| 279 | *FixupData = *FixupData + sizeof (UINT64);\r |
| 280 | break;\r |
| 281 | \r |
| 282 | case EFI_IMAGE_REL_BASED_IA64_IMM64:\r |
| 283 | F64 = (UINT64 *) Fixup;\r |
| 284 | *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT64));\r |
| 285 | if (*(UINT64 *) (*FixupData) == *F64) {\r |
| 286 | //\r |
| 287 | // Align it to bundle address before fixing up the\r |
| 288 | // 64-bit immediate value of the movl instruction.\r |
| 289 | //\r |
| 290 | //\r |
| 291 | Fixup = (CHAR8 *) ((UINT64) Fixup & (UINT64)~(15));\r |
| 292 | FixupVal = (UINT64) 0;\r |
| 293 | \r |
| 294 | //\r |
| 295 | // Extract the lower 32 bits of IMM64 from bundle\r |
| 296 | //\r |
| 297 | EXT_IMM64 (\r |
| 298 | FixupVal,\r |
| 299 | (UINT32 *) Fixup + IMM64_IMM7B_INST_WORD_X,\r |
| 300 | IMM64_IMM7B_SIZE_X,\r |
| 301 | IMM64_IMM7B_INST_WORD_POS_X,\r |
| 302 | IMM64_IMM7B_VAL_POS_X\r |
| 303 | );\r |
| 304 | \r |
| 305 | EXT_IMM64 (\r |
| 306 | FixupVal,\r |
| 307 | (UINT32 *) Fixup + IMM64_IMM9D_INST_WORD_X,\r |
| 308 | IMM64_IMM9D_SIZE_X,\r |
| 309 | IMM64_IMM9D_INST_WORD_POS_X,\r |
| 310 | IMM64_IMM9D_VAL_POS_X\r |
| 311 | );\r |
| 312 | \r |
| 313 | EXT_IMM64 (\r |
| 314 | FixupVal,\r |
| 315 | (UINT32 *) Fixup + IMM64_IMM5C_INST_WORD_X,\r |
| 316 | IMM64_IMM5C_SIZE_X,\r |
| 317 | IMM64_IMM5C_INST_WORD_POS_X,\r |
| 318 | IMM64_IMM5C_VAL_POS_X\r |
| 319 | );\r |
| 320 | \r |
| 321 | EXT_IMM64 (\r |
| 322 | FixupVal,\r |
| 323 | (UINT32 *) Fixup + IMM64_IC_INST_WORD_X,\r |
| 324 | IMM64_IC_SIZE_X,\r |
| 325 | IMM64_IC_INST_WORD_POS_X,\r |
| 326 | IMM64_IC_VAL_POS_X\r |
| 327 | );\r |
| 328 | \r |
| 329 | EXT_IMM64 (\r |
| 330 | FixupVal,\r |
| 331 | (UINT32 *) Fixup + IMM64_IMM41a_INST_WORD_X,\r |
| 332 | IMM64_IMM41a_SIZE_X,\r |
| 333 | IMM64_IMM41a_INST_WORD_POS_X,\r |
| 334 | IMM64_IMM41a_VAL_POS_X\r |
| 335 | );\r |
| 336 | \r |
| 337 | //\r |
| 338 | // Update 64-bit address\r |
| 339 | //\r |
| 340 | FixupVal += Adjust;\r |
| 341 | \r |
| 342 | //\r |
| 343 | // Insert IMM64 into bundle\r |
| 344 | //\r |
| 345 | INS_IMM64 (\r |
| 346 | FixupVal,\r |
| 347 | ((UINT32 *) Fixup + IMM64_IMM7B_INST_WORD_X),\r |
| 348 | IMM64_IMM7B_SIZE_X,\r |
| 349 | IMM64_IMM7B_INST_WORD_POS_X,\r |
| 350 | IMM64_IMM7B_VAL_POS_X\r |
| 351 | );\r |
| 352 | \r |
| 353 | INS_IMM64 (\r |
| 354 | FixupVal,\r |
| 355 | ((UINT32 *) Fixup + IMM64_IMM9D_INST_WORD_X),\r |
| 356 | IMM64_IMM9D_SIZE_X,\r |
| 357 | IMM64_IMM9D_INST_WORD_POS_X,\r |
| 358 | IMM64_IMM9D_VAL_POS_X\r |
| 359 | );\r |
| 360 | \r |
| 361 | INS_IMM64 (\r |
| 362 | FixupVal,\r |
| 363 | ((UINT32 *) Fixup + IMM64_IMM5C_INST_WORD_X),\r |
| 364 | IMM64_IMM5C_SIZE_X,\r |
| 365 | IMM64_IMM5C_INST_WORD_POS_X,\r |
| 366 | IMM64_IMM5C_VAL_POS_X\r |
| 367 | );\r |
| 368 | \r |
| 369 | INS_IMM64 (\r |
| 370 | FixupVal,\r |
| 371 | ((UINT32 *) Fixup + IMM64_IC_INST_WORD_X),\r |
| 372 | IMM64_IC_SIZE_X,\r |
| 373 | IMM64_IC_INST_WORD_POS_X,\r |
| 374 | IMM64_IC_VAL_POS_X\r |
| 375 | );\r |
| 376 | \r |
| 377 | INS_IMM64 (\r |
| 378 | FixupVal,\r |
| 379 | ((UINT32 *) Fixup + IMM64_IMM41a_INST_WORD_X),\r |
| 380 | IMM64_IMM41a_SIZE_X,\r |
| 381 | IMM64_IMM41a_INST_WORD_POS_X,\r |
| 382 | IMM64_IMM41a_VAL_POS_X\r |
| 383 | );\r |
| 384 | \r |
| 385 | INS_IMM64 (\r |
| 386 | FixupVal,\r |
| 387 | ((UINT32 *) Fixup + IMM64_IMM41b_INST_WORD_X),\r |
| 388 | IMM64_IMM41b_SIZE_X,\r |
| 389 | IMM64_IMM41b_INST_WORD_POS_X,\r |
| 390 | IMM64_IMM41b_VAL_POS_X\r |
| 391 | );\r |
| 392 | \r |
| 393 | INS_IMM64 (\r |
| 394 | FixupVal,\r |
| 395 | ((UINT32 *) Fixup + IMM64_IMM41c_INST_WORD_X),\r |
| 396 | IMM64_IMM41c_SIZE_X,\r |
| 397 | IMM64_IMM41c_INST_WORD_POS_X,\r |
| 398 | IMM64_IMM41c_VAL_POS_X\r |
| 399 | );\r |
| 400 | \r |
| 401 | INS_IMM64 (\r |
| 402 | FixupVal,\r |
| 403 | ((UINT32 *) Fixup + IMM64_SIGN_INST_WORD_X),\r |
| 404 | IMM64_SIGN_SIZE_X,\r |
| 405 | IMM64_SIGN_INST_WORD_POS_X,\r |
| 406 | IMM64_SIGN_VAL_POS_X\r |
| 407 | );\r |
| 408 | \r |
| 409 | *(UINT64 *) (*FixupData) = *F64;\r |
| 410 | }\r |
| 411 | \r |
| 412 | *FixupData = *FixupData + sizeof (UINT64);\r |
| 413 | break;\r |
| 414 | \r |
| 415 | default:\r |
| 416 | DEBUG ((EFI_D_ERROR, "PeHotRelocateEx:unknown fixed type\n"));\r |
| 417 | return RETURN_UNSUPPORTED;\r |
| 418 | }\r |
| 419 | \r |
| 420 | return RETURN_SUCCESS;\r |
| 421 | }\r |
| 422 | \r |
| 423 | \r |
| 424 | \r |
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