| cf683fed |
1 | /** @file\r |
| 2 | GCC inline implementation of BaseLib processor specific functions.\r |
| 3 | \r |
| 4 | Copyright (c) 2006 - 2010, Intel Corporation<BR>\r |
| 5 | Portions copyright (c) 2008-2009 Apple Inc. All rights reserved.<BR>\r |
| 6 | All rights reserved. This program and the accompanying materials\r |
| 7 | are licensed and made available under the terms and conditions of the BSD License\r |
| 8 | which accompanies this distribution. The full text of the license may be found at\r |
| 9 | http://opensource.org/licenses/bsd-license.php\r |
| 10 | \r |
| 11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| 12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| 13 | \r |
| 14 | **/\r |
| 15 | \r |
| 16 | \r |
| 17 | #include "BaseLibInternals.h"\r |
| 18 | \r |
| 19 | \r |
| 20 | \r |
| 21 | /**\r |
| 22 | Used to serialize load and store operations.\r |
| 23 | \r |
| 24 | All loads and stores that proceed calls to this function are guaranteed to be\r |
| 25 | globally visible when this function returns.\r |
| 26 | \r |
| 27 | **/\r |
| 28 | VOID\r |
| 29 | EFIAPI\r |
| 30 | MemoryFence (\r |
| 31 | VOID\r |
| 32 | )\r |
| 33 | {\r |
| 34 | // This is a little bit of overkill and it is more about the compiler that it is\r |
| 35 | // actually processor syncronization. This is like the _ReadWriteBarrier \r |
| 36 | // Microsft specific intrinsic\r |
| 37 | __asm__ __volatile__ ("":::"memory");\r |
| 38 | }\r |
| 39 | \r |
| 40 | \r |
| 41 | /**\r |
| 42 | Enables CPU interrupts.\r |
| 43 | \r |
| 44 | Enables CPU interrupts.\r |
| 45 | \r |
| 46 | **/\r |
| 47 | VOID\r |
| 48 | EFIAPI\r |
| 49 | EnableInterrupts (\r |
| 50 | VOID\r |
| 51 | )\r |
| 52 | {\r |
| 53 | __asm__ __volatile__ ("sti"::: "memory");\r |
| 54 | }\r |
| 55 | \r |
| 56 | \r |
| 57 | /**\r |
| 58 | Disables CPU interrupts.\r |
| 59 | \r |
| 60 | Disables CPU interrupts.\r |
| 61 | \r |
| 62 | **/\r |
| 63 | VOID\r |
| 64 | EFIAPI\r |
| 65 | DisableInterrupts (\r |
| 66 | VOID\r |
| 67 | )\r |
| 68 | { \r |
| 69 | __asm__ __volatile__ ("cli"::: "memory");\r |
| 70 | }\r |
| 71 | \r |
| 72 | \r |
| 73 | \r |
| 74 | \r |
| 75 | /**\r |
| 76 | Requests CPU to pause for a short period of time.\r |
| 77 | \r |
| 78 | Requests CPU to pause for a short period of time. Typically used in MP\r |
| 79 | systems to prevent memory starvation while waiting for a spin lock.\r |
| 80 | \r |
| 81 | **/\r |
| 82 | VOID\r |
| 83 | EFIAPI\r |
| 84 | CpuPause (\r |
| 85 | VOID\r |
| 86 | )\r |
| 87 | {\r |
| 88 | __asm__ __volatile__ ("pause");\r |
| 89 | }\r |
| 90 | \r |
| 91 | \r |
| 92 | /**\r |
| 93 | Generates a breakpoint on the CPU.\r |
| 94 | \r |
| 95 | Generates a breakpoint on the CPU. The breakpoint must be implemented such\r |
| 96 | that code can resume normal execution after the breakpoint.\r |
| 97 | \r |
| 98 | **/\r |
| 99 | VOID\r |
| 100 | EFIAPI\r |
| 101 | CpuBreakpoint (\r |
| 102 | VOID\r |
| 103 | )\r |
| 104 | {\r |
| 105 | __asm__ __volatile__ ("int $3");\r |
| 106 | }\r |
| 107 | \r |
| 108 | \r |
| 109 | \r |
| 110 | /**\r |
| 111 | Returns a 64-bit Machine Specific Register(MSR).\r |
| 112 | \r |
| 113 | Reads and returns the 64-bit MSR specified by Index. No parameter checking is\r |
| 114 | performed on Index, and some Index values may cause CPU exceptions. The\r |
| 115 | caller must either guarantee that Index is valid, or the caller must set up\r |
| 116 | exception handlers to catch the exceptions. This function is only available\r |
| 117 | on IA-32 and X64.\r |
| 118 | \r |
| 119 | @param Index The 32-bit MSR index to read.\r |
| 120 | \r |
| 121 | @return The value of the MSR identified by Index.\r |
| 122 | \r |
| 123 | **/\r |
| 124 | UINT64\r |
| 125 | EFIAPI\r |
| 126 | AsmReadMsr64 (\r |
| 127 | IN UINT32 Index\r |
| 128 | )\r |
| 129 | {\r |
| 130 | UINT64 Data;\r |
| 131 | \r |
| 132 | __asm__ __volatile__ (\r |
| 133 | "rdmsr"\r |
| 134 | : "=A" (Data) // %0\r |
| 135 | : "c" (Index) // %1\r |
| 136 | );\r |
| 137 | \r |
| 138 | return Data;\r |
| 139 | }\r |
| 140 | \r |
| 141 | /**\r |
| 142 | Writes a 64-bit value to a Machine Specific Register(MSR), and returns the\r |
| 143 | value.\r |
| 144 | \r |
| 145 | Writes the 64-bit value specified by Value to the MSR specified by Index. The\r |
| 146 | 64-bit value written to the MSR is returned. No parameter checking is\r |
| 147 | performed on Index or Value, and some of these may cause CPU exceptions. The\r |
| 148 | caller must either guarantee that Index and Value are valid, or the caller\r |
| 149 | must establish proper exception handlers. This function is only available on\r |
| 150 | IA-32 and X64.\r |
| 151 | \r |
| 152 | @param Index The 32-bit MSR index to write.\r |
| 153 | @param Value The 64-bit value to write to the MSR.\r |
| 154 | \r |
| 155 | @return Value\r |
| 156 | \r |
| 157 | **/\r |
| 158 | UINT64\r |
| 159 | EFIAPI\r |
| 160 | AsmWriteMsr64 (\r |
| 161 | IN UINT32 Index,\r |
| 162 | IN UINT64 Value\r |
| 163 | )\r |
| 164 | {\r |
| 165 | __asm__ __volatile__ (\r |
| 166 | "wrmsr"\r |
| 167 | :\r |
| 168 | : "c" (Index),\r |
| 169 | "A" (Value)\r |
| 170 | );\r |
| 171 | \r |
| 172 | return Value;\r |
| 173 | }\r |
| 174 | \r |
| 175 | \r |
| 176 | \r |
| 177 | /**\r |
| 178 | Reads the current value of the EFLAGS register.\r |
| 179 | \r |
| 180 | Reads and returns the current value of the EFLAGS register. This function is\r |
| 181 | only available on IA-32 and X64. This returns a 32-bit value on IA-32 and a\r |
| 182 | 64-bit value on X64.\r |
| 183 | \r |
| 184 | @return EFLAGS on IA-32 or RFLAGS on X64.\r |
| 185 | \r |
| 186 | **/\r |
| 187 | UINTN\r |
| 188 | EFIAPI\r |
| 189 | AsmReadEflags (\r |
| 190 | VOID\r |
| 191 | )\r |
| 192 | {\r |
| 193 | UINTN Eflags;\r |
| 194 | \r |
| 195 | __asm__ __volatile__ (\r |
| 196 | "pushfl \n\t"\r |
| 197 | "popl %0 "\r |
| 198 | : "=r" (Eflags)\r |
| 199 | );\r |
| 200 | \r |
| 201 | return Eflags;\r |
| 202 | }\r |
| 203 | \r |
| 204 | \r |
| 205 | \r |
| 206 | /**\r |
| 207 | Reads the current value of the Control Register 0 (CR0).\r |
| 208 | \r |
| 209 | Reads and returns the current value of CR0. This function is only available\r |
| 210 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 211 | X64.\r |
| 212 | \r |
| 213 | @return The value of the Control Register 0 (CR0).\r |
| 214 | \r |
| 215 | **/\r |
| 216 | UINTN\r |
| 217 | EFIAPI\r |
| 218 | AsmReadCr0 (\r |
| 219 | VOID\r |
| 220 | )\r |
| 221 | {\r |
| 222 | UINTN Data;\r |
| 223 | \r |
| 224 | __asm__ __volatile__ (\r |
| 225 | "movl %%cr0,%0" \r |
| 226 | : "=a" (Data)\r |
| 227 | );\r |
| 228 | \r |
| 229 | return Data;\r |
| 230 | }\r |
| 231 | \r |
| 232 | \r |
| 233 | /**\r |
| 234 | Reads the current value of the Control Register 2 (CR2).\r |
| 235 | \r |
| 236 | Reads and returns the current value of CR2. This function is only available\r |
| 237 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 238 | X64.\r |
| 239 | \r |
| 240 | @return The value of the Control Register 2 (CR2).\r |
| 241 | \r |
| 242 | **/\r |
| 243 | UINTN\r |
| 244 | EFIAPI\r |
| 245 | AsmReadCr2 (\r |
| 246 | VOID\r |
| 247 | )\r |
| 248 | {\r |
| 249 | UINTN Data;\r |
| 250 | \r |
| 251 | __asm__ __volatile__ (\r |
| 252 | "movl %%cr2, %0" \r |
| 253 | : "=r" (Data)\r |
| 254 | );\r |
| 255 | \r |
| 256 | return Data;\r |
| 257 | }\r |
| 258 | \r |
| 259 | /**\r |
| 260 | Reads the current value of the Control Register 3 (CR3).\r |
| 261 | \r |
| 262 | Reads and returns the current value of CR3. This function is only available\r |
| 263 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 264 | X64.\r |
| 265 | \r |
| 266 | @return The value of the Control Register 3 (CR3).\r |
| 267 | \r |
| 268 | **/\r |
| 269 | UINTN\r |
| 270 | EFIAPI\r |
| 271 | AsmReadCr3 (\r |
| 272 | VOID\r |
| 273 | )\r |
| 274 | {\r |
| 275 | UINTN Data;\r |
| 276 | \r |
| 277 | __asm__ __volatile__ (\r |
| 278 | "movl %%cr3, %0"\r |
| 279 | : "=r" (Data)\r |
| 280 | );\r |
| 281 | \r |
| 282 | return Data;\r |
| 283 | }\r |
| 284 | \r |
| 285 | \r |
| 286 | /**\r |
| 287 | Reads the current value of the Control Register 4 (CR4).\r |
| 288 | \r |
| 289 | Reads and returns the current value of CR4. This function is only available\r |
| 290 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 291 | X64.\r |
| 292 | \r |
| 293 | @return The value of the Control Register 4 (CR4).\r |
| 294 | \r |
| 295 | **/\r |
| 296 | UINTN\r |
| 297 | EFIAPI\r |
| 298 | AsmReadCr4 (\r |
| 299 | VOID\r |
| 300 | )\r |
| 301 | {\r |
| 302 | UINTN Data;\r |
| 303 | \r |
| 304 | __asm__ __volatile__ (\r |
| 305 | "movl %%cr4, %0"\r |
| 306 | : "=a" (Data)\r |
| 307 | );\r |
| 308 | \r |
| 309 | return Data;\r |
| 310 | }\r |
| 311 | \r |
| 312 | \r |
| 313 | /**\r |
| 314 | Writes a value to Control Register 0 (CR0).\r |
| 315 | \r |
| 316 | Writes and returns a new value to CR0. This function is only available on\r |
| 317 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 318 | \r |
| 319 | @param Cr0 The value to write to CR0.\r |
| 320 | \r |
| 321 | @return The value written to CR0.\r |
| 322 | \r |
| 323 | **/\r |
| 324 | UINTN\r |
| 325 | EFIAPI\r |
| 326 | AsmWriteCr0 (\r |
| 327 | UINTN Cr0\r |
| 328 | )\r |
| 329 | {\r |
| 330 | __asm__ __volatile__ (\r |
| 331 | "movl %0, %%cr0"\r |
| 332 | :\r |
| 333 | : "r" (Cr0)\r |
| 334 | );\r |
| 335 | return Cr0;\r |
| 336 | }\r |
| 337 | \r |
| 338 | \r |
| 339 | /**\r |
| 340 | Writes a value to Control Register 2 (CR2).\r |
| 341 | \r |
| 342 | Writes and returns a new value to CR2. This function is only available on\r |
| 343 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 344 | \r |
| 345 | @param Cr2 The value to write to CR2.\r |
| 346 | \r |
| 347 | @return The value written to CR2.\r |
| 348 | \r |
| 349 | **/\r |
| 350 | UINTN\r |
| 351 | EFIAPI\r |
| 352 | AsmWriteCr2 (\r |
| 353 | UINTN Cr2\r |
| 354 | )\r |
| 355 | {\r |
| 356 | __asm__ __volatile__ (\r |
| 357 | "movl %0, %%cr2"\r |
| 358 | :\r |
| 359 | : "r" (Cr2)\r |
| 360 | );\r |
| 361 | return Cr2;\r |
| 362 | }\r |
| 363 | \r |
| 364 | \r |
| 365 | /**\r |
| 366 | Writes a value to Control Register 3 (CR3).\r |
| 367 | \r |
| 368 | Writes and returns a new value to CR3. This function is only available on\r |
| 369 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 370 | \r |
| 371 | @param Cr3 The value to write to CR3.\r |
| 372 | \r |
| 373 | @return The value written to CR3.\r |
| 374 | \r |
| 375 | **/\r |
| 376 | UINTN\r |
| 377 | EFIAPI\r |
| 378 | AsmWriteCr3 (\r |
| 379 | UINTN Cr3\r |
| 380 | )\r |
| 381 | {\r |
| 382 | __asm__ __volatile__ (\r |
| 383 | "movl %0, %%cr3"\r |
| 384 | :\r |
| 385 | : "r" (Cr3)\r |
| 386 | );\r |
| 387 | return Cr3;\r |
| 388 | }\r |
| 389 | \r |
| 390 | \r |
| 391 | /**\r |
| 392 | Writes a value to Control Register 4 (CR4).\r |
| 393 | \r |
| 394 | Writes and returns a new value to CR4. This function is only available on\r |
| 395 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 396 | \r |
| 397 | @param Cr4 The value to write to CR4.\r |
| 398 | \r |
| 399 | @return The value written to CR4.\r |
| 400 | \r |
| 401 | **/\r |
| 402 | UINTN\r |
| 403 | EFIAPI\r |
| 404 | AsmWriteCr4 (\r |
| 405 | UINTN Cr4\r |
| 406 | )\r |
| 407 | {\r |
| 408 | __asm__ __volatile__ (\r |
| 409 | "movl %0, %%cr4"\r |
| 410 | :\r |
| 411 | : "r" (Cr4)\r |
| 412 | );\r |
| 413 | return Cr4;\r |
| 414 | }\r |
| 415 | \r |
| 416 | \r |
| 417 | /**\r |
| 418 | Reads the current value of Debug Register 0 (DR0).\r |
| 419 | \r |
| 420 | Reads and returns the current value of DR0. This function is only available\r |
| 421 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 422 | X64.\r |
| 423 | \r |
| 424 | @return The value of Debug Register 0 (DR0).\r |
| 425 | \r |
| 426 | **/\r |
| 427 | UINTN\r |
| 428 | EFIAPI\r |
| 429 | AsmReadDr0 (\r |
| 430 | VOID\r |
| 431 | )\r |
| 432 | {\r |
| 433 | UINTN Data;\r |
| 434 | \r |
| 435 | __asm__ __volatile__ (\r |
| 436 | "movl %%dr0, %0"\r |
| 437 | : "=r" (Data)\r |
| 438 | );\r |
| 439 | \r |
| 440 | return Data;\r |
| 441 | }\r |
| 442 | \r |
| 443 | \r |
| 444 | /**\r |
| 445 | Reads the current value of Debug Register 1 (DR1).\r |
| 446 | \r |
| 447 | Reads and returns the current value of DR1. This function is only available\r |
| 448 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 449 | X64.\r |
| 450 | \r |
| 451 | @return The value of Debug Register 1 (DR1).\r |
| 452 | \r |
| 453 | **/\r |
| 454 | UINTN\r |
| 455 | EFIAPI\r |
| 456 | AsmReadDr1 (\r |
| 457 | VOID\r |
| 458 | )\r |
| 459 | {\r |
| 460 | UINTN Data;\r |
| 461 | \r |
| 462 | __asm__ __volatile__ (\r |
| 463 | "movl %%dr1, %0"\r |
| 464 | : "=r" (Data)\r |
| 465 | );\r |
| 466 | \r |
| 467 | return Data;\r |
| 468 | }\r |
| 469 | \r |
| 470 | \r |
| 471 | /**\r |
| 472 | Reads the current value of Debug Register 2 (DR2).\r |
| 473 | \r |
| 474 | Reads and returns the current value of DR2. This function is only available\r |
| 475 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 476 | X64.\r |
| 477 | \r |
| 478 | @return The value of Debug Register 2 (DR2).\r |
| 479 | \r |
| 480 | **/\r |
| 481 | UINTN\r |
| 482 | EFIAPI\r |
| 483 | AsmReadDr2 (\r |
| 484 | VOID\r |
| 485 | )\r |
| 486 | {\r |
| 487 | UINTN Data;\r |
| 488 | \r |
| 489 | __asm__ __volatile__ (\r |
| 490 | "movl %%dr2, %0"\r |
| 491 | : "=r" (Data)\r |
| 492 | );\r |
| 493 | \r |
| 494 | return Data;\r |
| 495 | }\r |
| 496 | \r |
| 497 | \r |
| 498 | /**\r |
| 499 | Reads the current value of Debug Register 3 (DR3).\r |
| 500 | \r |
| 501 | Reads and returns the current value of DR3. This function is only available\r |
| 502 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 503 | X64.\r |
| 504 | \r |
| 505 | @return The value of Debug Register 3 (DR3).\r |
| 506 | \r |
| 507 | **/\r |
| 508 | UINTN\r |
| 509 | EFIAPI\r |
| 510 | AsmReadDr3 (\r |
| 511 | VOID\r |
| 512 | )\r |
| 513 | {\r |
| 514 | UINTN Data;\r |
| 515 | \r |
| 516 | __asm__ __volatile__ (\r |
| 517 | "movl %%dr3, %0"\r |
| 518 | : "=r" (Data)\r |
| 519 | );\r |
| 520 | \r |
| 521 | return Data;\r |
| 522 | }\r |
| 523 | \r |
| 524 | \r |
| 525 | /**\r |
| 526 | Reads the current value of Debug Register 4 (DR4).\r |
| 527 | \r |
| 528 | Reads and returns the current value of DR4. This function is only available\r |
| 529 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 530 | X64.\r |
| 531 | \r |
| 532 | @return The value of Debug Register 4 (DR4).\r |
| 533 | \r |
| 534 | **/\r |
| 535 | UINTN\r |
| 536 | EFIAPI\r |
| 537 | AsmReadDr4 (\r |
| 538 | VOID\r |
| 539 | )\r |
| 540 | {\r |
| 541 | UINTN Data;\r |
| 542 | \r |
| 543 | __asm__ __volatile__ (\r |
| 544 | "movl %%dr4, %0"\r |
| 545 | : "=r" (Data)\r |
| 546 | );\r |
| 547 | \r |
| 548 | return Data;\r |
| 549 | }\r |
| 550 | \r |
| 551 | \r |
| 552 | /**\r |
| 553 | Reads the current value of Debug Register 5 (DR5).\r |
| 554 | \r |
| 555 | Reads and returns the current value of DR5. This function is only available\r |
| 556 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 557 | X64.\r |
| 558 | \r |
| 559 | @return The value of Debug Register 5 (DR5).\r |
| 560 | \r |
| 561 | **/\r |
| 562 | UINTN\r |
| 563 | EFIAPI\r |
| 564 | AsmReadDr5 (\r |
| 565 | VOID\r |
| 566 | )\r |
| 567 | {\r |
| 568 | UINTN Data;\r |
| 569 | \r |
| 570 | __asm__ __volatile__ (\r |
| 571 | "movl %%dr5, %0"\r |
| 572 | : "=r" (Data)\r |
| 573 | );\r |
| 574 | \r |
| 575 | return Data;\r |
| 576 | }\r |
| 577 | \r |
| 578 | \r |
| 579 | /**\r |
| 580 | Reads the current value of Debug Register 6 (DR6).\r |
| 581 | \r |
| 582 | Reads and returns the current value of DR6. This function is only available\r |
| 583 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 584 | X64.\r |
| 585 | \r |
| 586 | @return The value of Debug Register 6 (DR6).\r |
| 587 | \r |
| 588 | **/\r |
| 589 | UINTN\r |
| 590 | EFIAPI\r |
| 591 | AsmReadDr6 (\r |
| 592 | VOID\r |
| 593 | )\r |
| 594 | {\r |
| 595 | UINTN Data;\r |
| 596 | \r |
| 597 | __asm__ __volatile__ (\r |
| 598 | "movl %%dr6, %0"\r |
| 599 | : "=r" (Data)\r |
| 600 | );\r |
| 601 | \r |
| 602 | return Data;\r |
| 603 | }\r |
| 604 | \r |
| 605 | \r |
| 606 | /**\r |
| 607 | Reads the current value of Debug Register 7 (DR7).\r |
| 608 | \r |
| 609 | Reads and returns the current value of DR7. This function is only available\r |
| 610 | on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
| 611 | X64.\r |
| 612 | \r |
| 613 | @return The value of Debug Register 7 (DR7).\r |
| 614 | \r |
| 615 | **/\r |
| 616 | UINTN\r |
| 617 | EFIAPI\r |
| 618 | AsmReadDr7 (\r |
| 619 | VOID\r |
| 620 | )\r |
| 621 | {\r |
| 622 | UINTN Data;\r |
| 623 | \r |
| 624 | __asm__ __volatile__ (\r |
| 625 | "movl %%dr7, %0"\r |
| 626 | : "=r" (Data)\r |
| 627 | );\r |
| 628 | \r |
| 629 | return Data;\r |
| 630 | }\r |
| 631 | \r |
| 632 | \r |
| 633 | /**\r |
| 634 | Writes a value to Debug Register 0 (DR0).\r |
| 635 | \r |
| 636 | Writes and returns a new value to DR0. This function is only available on\r |
| 637 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 638 | \r |
| 639 | @param Dr0 The value to write to Dr0.\r |
| 640 | \r |
| 641 | @return The value written to Debug Register 0 (DR0).\r |
| 642 | \r |
| 643 | **/\r |
| 644 | UINTN\r |
| 645 | EFIAPI\r |
| 646 | AsmWriteDr0 (\r |
| 647 | UINTN Dr0\r |
| 648 | )\r |
| 649 | {\r |
| 650 | __asm__ __volatile__ (\r |
| 651 | "movl %0, %%dr0"\r |
| 652 | :\r |
| 653 | : "r" (Dr0)\r |
| 654 | );\r |
| 655 | return Dr0;\r |
| 656 | }\r |
| 657 | \r |
| 658 | \r |
| 659 | /**\r |
| 660 | Writes a value to Debug Register 1 (DR1).\r |
| 661 | \r |
| 662 | Writes and returns a new value to DR1. This function is only available on\r |
| 663 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 664 | \r |
| 665 | @param Dr1 The value to write to Dr1.\r |
| 666 | \r |
| 667 | @return The value written to Debug Register 1 (DR1).\r |
| 668 | \r |
| 669 | **/\r |
| 670 | UINTN\r |
| 671 | EFIAPI\r |
| 672 | AsmWriteDr1 (\r |
| 673 | UINTN Dr1\r |
| 674 | )\r |
| 675 | {\r |
| 676 | __asm__ __volatile__ (\r |
| 677 | "movl %0, %%dr1"\r |
| 678 | :\r |
| 679 | : "r" (Dr1)\r |
| 680 | );\r |
| 681 | return Dr1;\r |
| 682 | }\r |
| 683 | \r |
| 684 | \r |
| 685 | /**\r |
| 686 | Writes a value to Debug Register 2 (DR2).\r |
| 687 | \r |
| 688 | Writes and returns a new value to DR2. This function is only available on\r |
| 689 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 690 | \r |
| 691 | @param Dr2 The value to write to Dr2.\r |
| 692 | \r |
| 693 | @return The value written to Debug Register 2 (DR2).\r |
| 694 | \r |
| 695 | **/\r |
| 696 | UINTN\r |
| 697 | EFIAPI\r |
| 698 | AsmWriteDr2 (\r |
| 699 | UINTN Dr2\r |
| 700 | )\r |
| 701 | {\r |
| 702 | __asm__ __volatile__ (\r |
| 703 | "movl %0, %%dr2"\r |
| 704 | :\r |
| 705 | : "r" (Dr2)\r |
| 706 | );\r |
| 707 | return Dr2;\r |
| 708 | }\r |
| 709 | \r |
| 710 | \r |
| 711 | /**\r |
| 712 | Writes a value to Debug Register 3 (DR3).\r |
| 713 | \r |
| 714 | Writes and returns a new value to DR3. This function is only available on\r |
| 715 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 716 | \r |
| 717 | @param Dr3 The value to write to Dr3.\r |
| 718 | \r |
| 719 | @return The value written to Debug Register 3 (DR3).\r |
| 720 | \r |
| 721 | **/\r |
| 722 | UINTN\r |
| 723 | EFIAPI\r |
| 724 | AsmWriteDr3 (\r |
| 725 | UINTN Dr3\r |
| 726 | )\r |
| 727 | {\r |
| 728 | __asm__ __volatile__ (\r |
| 729 | "movl %0, %%dr3"\r |
| 730 | :\r |
| 731 | : "r" (Dr3)\r |
| 732 | );\r |
| 733 | return Dr3;\r |
| 734 | }\r |
| 735 | \r |
| 736 | \r |
| 737 | /**\r |
| 738 | Writes a value to Debug Register 4 (DR4).\r |
| 739 | \r |
| 740 | Writes and returns a new value to DR4. This function is only available on\r |
| 741 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 742 | \r |
| 743 | @param Dr4 The value to write to Dr4.\r |
| 744 | \r |
| 745 | @return The value written to Debug Register 4 (DR4).\r |
| 746 | \r |
| 747 | **/\r |
| 748 | UINTN\r |
| 749 | EFIAPI\r |
| 750 | AsmWriteDr4 (\r |
| 751 | UINTN Dr4\r |
| 752 | )\r |
| 753 | {\r |
| 754 | __asm__ __volatile__ (\r |
| 755 | "movl %0, %%dr4"\r |
| 756 | :\r |
| 757 | : "r" (Dr4)\r |
| 758 | );\r |
| 759 | return Dr4;\r |
| 760 | }\r |
| 761 | \r |
| 762 | \r |
| 763 | /**\r |
| 764 | Writes a value to Debug Register 5 (DR5).\r |
| 765 | \r |
| 766 | Writes and returns a new value to DR5. This function is only available on\r |
| 767 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 768 | \r |
| 769 | @param Dr5 The value to write to Dr5.\r |
| 770 | \r |
| 771 | @return The value written to Debug Register 5 (DR5).\r |
| 772 | \r |
| 773 | **/\r |
| 774 | UINTN\r |
| 775 | EFIAPI\r |
| 776 | AsmWriteDr5 (\r |
| 777 | UINTN Dr5\r |
| 778 | )\r |
| 779 | {\r |
| 780 | __asm__ __volatile__ (\r |
| 781 | "movl %0, %%dr5"\r |
| 782 | :\r |
| 783 | : "r" (Dr5)\r |
| 784 | );\r |
| 785 | return Dr5;\r |
| 786 | }\r |
| 787 | \r |
| 788 | \r |
| 789 | /**\r |
| 790 | Writes a value to Debug Register 6 (DR6).\r |
| 791 | \r |
| 792 | Writes and returns a new value to DR6. This function is only available on\r |
| 793 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 794 | \r |
| 795 | @param Dr6 The value to write to Dr6.\r |
| 796 | \r |
| 797 | @return The value written to Debug Register 6 (DR6).\r |
| 798 | \r |
| 799 | **/\r |
| 800 | UINTN\r |
| 801 | EFIAPI\r |
| 802 | AsmWriteDr6 (\r |
| 803 | UINTN Dr6\r |
| 804 | )\r |
| 805 | {\r |
| 806 | __asm__ __volatile__ (\r |
| 807 | "movl %0, %%dr6"\r |
| 808 | :\r |
| 809 | : "r" (Dr6)\r |
| 810 | );\r |
| 811 | return Dr6;\r |
| 812 | }\r |
| 813 | \r |
| 814 | \r |
| 815 | /**\r |
| 816 | Writes a value to Debug Register 7 (DR7).\r |
| 817 | \r |
| 818 | Writes and returns a new value to DR7. This function is only available on\r |
| 819 | IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.\r |
| 820 | \r |
| 821 | @param Dr7 The value to write to Dr7.\r |
| 822 | \r |
| 823 | @return The value written to Debug Register 7 (DR7).\r |
| 824 | \r |
| 825 | **/\r |
| 826 | UINTN\r |
| 827 | EFIAPI\r |
| 828 | AsmWriteDr7 (\r |
| 829 | UINTN Dr7\r |
| 830 | )\r |
| 831 | {\r |
| 832 | __asm__ __volatile__ (\r |
| 833 | "movl %0, %%dr7"\r |
| 834 | :\r |
| 835 | : "r" (Dr7)\r |
| 836 | );\r |
| 837 | return Dr7;\r |
| 838 | }\r |
| 839 | \r |
| 840 | \r |
| 841 | /**\r |
| 842 | Reads the current value of Code Segment Register (CS).\r |
| 843 | \r |
| 844 | Reads and returns the current value of CS. This function is only available on\r |
| 845 | IA-32 and X64.\r |
| 846 | \r |
| 847 | @return The current value of CS.\r |
| 848 | \r |
| 849 | **/\r |
| 850 | UINT16\r |
| 851 | EFIAPI\r |
| 852 | AsmReadCs (\r |
| 853 | VOID\r |
| 854 | )\r |
| 855 | {\r |
| 856 | UINT16 Data;\r |
| 857 | \r |
| 858 | __asm__ __volatile__ (\r |
| 859 | "mov %%cs, %0"\r |
| 860 | :"=a" (Data)\r |
| 861 | );\r |
| 862 | \r |
| 863 | return Data;\r |
| 864 | }\r |
| 865 | \r |
| 866 | \r |
| 867 | /**\r |
| 868 | Reads the current value of Data Segment Register (DS).\r |
| 869 | \r |
| 870 | Reads and returns the current value of DS. This function is only available on\r |
| 871 | IA-32 and X64.\r |
| 872 | \r |
| 873 | @return The current value of DS.\r |
| 874 | \r |
| 875 | **/\r |
| 876 | UINT16\r |
| 877 | EFIAPI\r |
| 878 | AsmReadDs (\r |
| 879 | VOID\r |
| 880 | )\r |
| 881 | {\r |
| 882 | UINT16 Data;\r |
| 883 | \r |
| 884 | __asm__ __volatile__ (\r |
| 885 | "mov %%ds, %0"\r |
| 886 | :"=a" (Data)\r |
| 887 | );\r |
| 888 | \r |
| 889 | return Data;\r |
| 890 | }\r |
| 891 | \r |
| 892 | \r |
| 893 | /**\r |
| 894 | Reads the current value of Extra Segment Register (ES).\r |
| 895 | \r |
| 896 | Reads and returns the current value of ES. This function is only available on\r |
| 897 | IA-32 and X64.\r |
| 898 | \r |
| 899 | @return The current value of ES.\r |
| 900 | \r |
| 901 | **/\r |
| 902 | UINT16\r |
| 903 | EFIAPI\r |
| 904 | AsmReadEs (\r |
| 905 | VOID\r |
| 906 | )\r |
| 907 | {\r |
| 908 | UINT16 Data;\r |
| 909 | \r |
| 910 | __asm__ __volatile__ (\r |
| 911 | "mov %%es, %0"\r |
| 912 | :"=a" (Data)\r |
| 913 | );\r |
| 914 | \r |
| 915 | return Data;\r |
| 916 | }\r |
| 917 | \r |
| 918 | \r |
| 919 | /**\r |
| 920 | Reads the current value of FS Data Segment Register (FS).\r |
| 921 | \r |
| 922 | Reads and returns the current value of FS. This function is only available on\r |
| 923 | IA-32 and X64.\r |
| 924 | \r |
| 925 | @return The current value of FS.\r |
| 926 | \r |
| 927 | **/\r |
| 928 | UINT16\r |
| 929 | EFIAPI\r |
| 930 | AsmReadFs (\r |
| 931 | VOID\r |
| 932 | )\r |
| 933 | {\r |
| 934 | UINT16 Data;\r |
| 935 | \r |
| 936 | __asm__ __volatile__ (\r |
| 937 | "mov %%fs, %0"\r |
| 938 | :"=a" (Data)\r |
| 939 | );\r |
| 940 | \r |
| 941 | return Data;\r |
| 942 | }\r |
| 943 | \r |
| 944 | \r |
| 945 | /**\r |
| 946 | Reads the current value of GS Data Segment Register (GS).\r |
| 947 | \r |
| 948 | Reads and returns the current value of GS. This function is only available on\r |
| 949 | IA-32 and X64.\r |
| 950 | \r |
| 951 | @return The current value of GS.\r |
| 952 | \r |
| 953 | **/\r |
| 954 | UINT16\r |
| 955 | EFIAPI\r |
| 956 | AsmReadGs (\r |
| 957 | VOID\r |
| 958 | )\r |
| 959 | {\r |
| 960 | UINT16 Data;\r |
| 961 | \r |
| 962 | __asm__ __volatile__ (\r |
| 963 | "mov %%gs, %0"\r |
| 964 | :"=a" (Data)\r |
| 965 | );\r |
| 966 | \r |
| 967 | return Data;\r |
| 968 | }\r |
| 969 | \r |
| 970 | \r |
| 971 | /**\r |
| 972 | Reads the current value of Stack Segment Register (SS).\r |
| 973 | \r |
| 974 | Reads and returns the current value of SS. This function is only available on\r |
| 975 | IA-32 and X64.\r |
| 976 | \r |
| 977 | @return The current value of SS.\r |
| 978 | \r |
| 979 | **/\r |
| 980 | UINT16\r |
| 981 | EFIAPI\r |
| 982 | AsmReadSs (\r |
| 983 | VOID\r |
| 984 | )\r |
| 985 | {\r |
| 986 | UINT16 Data;\r |
| 987 | \r |
| 988 | __asm__ __volatile__ (\r |
| 989 | "mov %%ds, %0"\r |
| 990 | :"=a" (Data)\r |
| 991 | );\r |
| 992 | \r |
| 993 | return Data;\r |
| 994 | }\r |
| 995 | \r |
| 996 | \r |
| 997 | /**\r |
| 998 | Reads the current value of Task Register (TR).\r |
| 999 | \r |
| 1000 | Reads and returns the current value of TR. This function is only available on\r |
| 1001 | IA-32 and X64.\r |
| 1002 | \r |
| 1003 | @return The current value of TR.\r |
| 1004 | \r |
| 1005 | **/\r |
| 1006 | UINT16\r |
| 1007 | EFIAPI\r |
| 1008 | AsmReadTr (\r |
| 1009 | VOID\r |
| 1010 | )\r |
| 1011 | {\r |
| 1012 | UINT16 Data;\r |
| 1013 | \r |
| 1014 | __asm__ __volatile__ (\r |
| 1015 | "str %0"\r |
| 1016 | : "=a" (Data)\r |
| 1017 | );\r |
| 1018 | \r |
| 1019 | return Data;\r |
| 1020 | }\r |
| 1021 | \r |
| 1022 | \r |
| 1023 | /**\r |
| 1024 | Reads the current Global Descriptor Table Register(GDTR) descriptor.\r |
| 1025 | \r |
| 1026 | Reads and returns the current GDTR descriptor and returns it in Gdtr. This\r |
| 1027 | function is only available on IA-32 and X64.\r |
| 1028 | \r |
| 1029 | @param Gdtr Pointer to a GDTR descriptor.\r |
| 1030 | \r |
| 1031 | **/\r |
| 1032 | VOID\r |
| 1033 | EFIAPI\r |
| 1034 | InternalX86ReadGdtr (\r |
| 1035 | OUT IA32_DESCRIPTOR *Gdtr\r |
| 1036 | )\r |
| 1037 | {\r |
| 1038 | __asm__ __volatile__ (\r |
| 1039 | "sgdt %0"\r |
| 1040 | : "=m" (*Gdtr)\r |
| 1041 | );\r |
| 1042 | }\r |
| 1043 | \r |
| 1044 | \r |
| 1045 | /**\r |
| 1046 | Writes the current Global Descriptor Table Register (GDTR) descriptor.\r |
| 1047 | \r |
| 1048 | Writes and the current GDTR descriptor specified by Gdtr. This function is\r |
| 1049 | only available on IA-32 and X64.\r |
| 1050 | \r |
| 1051 | @param Gdtr Pointer to a GDTR descriptor.\r |
| 1052 | \r |
| 1053 | **/\r |
| 1054 | VOID\r |
| 1055 | EFIAPI\r |
| 1056 | InternalX86WriteGdtr (\r |
| 1057 | IN CONST IA32_DESCRIPTOR *Gdtr\r |
| 1058 | )\r |
| 1059 | {\r |
| 1060 | __asm__ __volatile__ (\r |
| 1061 | "lgdt %0"\r |
| 1062 | :\r |
| 1063 | : "m" (*Gdtr)\r |
| 1064 | );\r |
| 1065 | \r |
| 1066 | }\r |
| 1067 | \r |
| 1068 | \r |
| 1069 | /**\r |
| 1070 | Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.\r |
| 1071 | \r |
| 1072 | Reads and returns the current IDTR descriptor and returns it in Idtr. This\r |
| 1073 | function is only available on IA-32 and X64.\r |
| 1074 | \r |
| 1075 | @param Idtr Pointer to a IDTR descriptor.\r |
| 1076 | \r |
| 1077 | **/\r |
| 1078 | VOID\r |
| 1079 | EFIAPI\r |
| 1080 | InternalX86ReadIdtr (\r |
| 1081 | OUT IA32_DESCRIPTOR *Idtr\r |
| 1082 | )\r |
| 1083 | {\r |
| 1084 | __asm__ __volatile__ (\r |
| 1085 | "sldt %0"\r |
| 1086 | : "=m" (*Idtr)\r |
| 1087 | );\r |
| 1088 | }\r |
| 1089 | \r |
| 1090 | \r |
| 1091 | /**\r |
| 1092 | Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.\r |
| 1093 | \r |
| 1094 | Writes the current IDTR descriptor and returns it in Idtr. This function is\r |
| 1095 | only available on IA-32 and X64.\r |
| 1096 | \r |
| 1097 | @param Idtr Pointer to a IDTR descriptor.\r |
| 1098 | \r |
| 1099 | **/\r |
| 1100 | VOID\r |
| 1101 | EFIAPI\r |
| 1102 | InternalX86WriteIdtr (\r |
| 1103 | IN CONST IA32_DESCRIPTOR *Idtr\r |
| 1104 | )\r |
| 1105 | {\r |
| 1106 | __asm__ __volatile__ (\r |
| 1107 | "lidt %0"\r |
| 1108 | :\r |
| 1109 | : "m" (*Idtr)\r |
| 1110 | );\r |
| 1111 | }\r |
| 1112 | \r |
| 1113 | \r |
| 1114 | /**\r |
| 1115 | Reads the current Local Descriptor Table Register(LDTR) selector.\r |
| 1116 | \r |
| 1117 | Reads and returns the current 16-bit LDTR descriptor value. This function is\r |
| 1118 | only available on IA-32 and X64.\r |
| 1119 | \r |
| 1120 | @return The current selector of LDT.\r |
| 1121 | \r |
| 1122 | **/\r |
| 1123 | UINT16\r |
| 1124 | EFIAPI\r |
| 1125 | AsmReadLdtr (\r |
| 1126 | VOID\r |
| 1127 | )\r |
| 1128 | {\r |
| 1129 | UINT16 Data;\r |
| 1130 | \r |
| 1131 | __asm__ __volatile__ (\r |
| 1132 | "sldt %0"\r |
| 1133 | : "=g" (Data) // %0\r |
| 1134 | );\r |
| 1135 | \r |
| 1136 | return Data;\r |
| 1137 | }\r |
| 1138 | \r |
| 1139 | \r |
| 1140 | /**\r |
| 1141 | Writes the current Local Descriptor Table Register (GDTR) selector.\r |
| 1142 | \r |
| 1143 | Writes and the current LDTR descriptor specified by Ldtr. This function is\r |
| 1144 | only available on IA-32 and X64.\r |
| 1145 | \r |
| 1146 | @param Ldtr 16-bit LDTR selector value.\r |
| 1147 | \r |
| 1148 | **/\r |
| 1149 | VOID\r |
| 1150 | EFIAPI\r |
| 1151 | AsmWriteLdtr (\r |
| 1152 | IN UINT16 Ldtr\r |
| 1153 | )\r |
| 1154 | {\r |
| 1155 | __asm__ __volatile__ (\r |
| 1156 | "lldtw %0"\r |
| 1157 | :\r |
| 1158 | : "g" (Ldtr) // %0\r |
| 1159 | );\r |
| 1160 | }\r |
| 1161 | \r |
| 1162 | \r |
| 1163 | /**\r |
| 1164 | Save the current floating point/SSE/SSE2 context to a buffer.\r |
| 1165 | \r |
| 1166 | Saves the current floating point/SSE/SSE2 state to the buffer specified by\r |
| 1167 | Buffer. Buffer must be aligned on a 16-byte boundary. This function is only\r |
| 1168 | available on IA-32 and X64.\r |
| 1169 | \r |
| 1170 | @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.\r |
| 1171 | \r |
| 1172 | **/\r |
| 1173 | VOID\r |
| 1174 | EFIAPI\r |
| 1175 | InternalX86FxSave (\r |
| 1176 | OUT IA32_FX_BUFFER *Buffer\r |
| 1177 | )\r |
| 1178 | {\r |
| 1179 | __asm__ __volatile__ (\r |
| 1180 | "fxsave %0"\r |
| 1181 | :\r |
| 1182 | : "m" (*Buffer) // %0\r |
| 1183 | ); \r |
| 1184 | }\r |
| 1185 | \r |
| 1186 | \r |
| 1187 | /**\r |
| 1188 | Restores the current floating point/SSE/SSE2 context from a buffer.\r |
| 1189 | \r |
| 1190 | Restores the current floating point/SSE/SSE2 state from the buffer specified\r |
| 1191 | by Buffer. Buffer must be aligned on a 16-byte boundary. This function is\r |
| 1192 | only available on IA-32 and X64.\r |
| 1193 | \r |
| 1194 | @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.\r |
| 1195 | \r |
| 1196 | **/\r |
| 1197 | VOID\r |
| 1198 | EFIAPI\r |
| 1199 | InternalX86FxRestore (\r |
| 1200 | IN CONST IA32_FX_BUFFER *Buffer\r |
| 1201 | )\r |
| 1202 | {\r |
| 1203 | __asm__ __volatile__ (\r |
| 1204 | "fxrstor %0"\r |
| 1205 | :\r |
| 1206 | : "m" (*Buffer) // %0\r |
| 1207 | );\r |
| 1208 | }\r |
| 1209 | \r |
| 1210 | \r |
| 1211 | /**\r |
| 1212 | Reads the current value of 64-bit MMX Register #0 (MM0).\r |
| 1213 | \r |
| 1214 | Reads and returns the current value of MM0. This function is only available\r |
| 1215 | on IA-32 and X64.\r |
| 1216 | \r |
| 1217 | @return The current value of MM0.\r |
| 1218 | \r |
| 1219 | **/\r |
| 1220 | UINT64\r |
| 1221 | EFIAPI\r |
| 1222 | AsmReadMm0 (\r |
| 1223 | VOID\r |
| 1224 | )\r |
| 1225 | {\r |
| 1226 | UINT64 Data;\r |
| 1227 | \r |
| 1228 | __asm__ __volatile__ (\r |
| 1229 | "push %%eax \n\t"\r |
| 1230 | "push %%eax \n\t"\r |
| 1231 | "movq %%mm0, (%%esp)\n\t"\r |
| 1232 | "pop %%eax \n\t"\r |
| 1233 | "pop %%edx \n\t"\r |
| 1234 | : "=A" (Data) // %0\r |
| 1235 | );\r |
| 1236 | \r |
| 1237 | return Data;\r |
| 1238 | }\r |
| 1239 | \r |
| 1240 | \r |
| 1241 | /**\r |
| 1242 | Reads the current value of 64-bit MMX Register #1 (MM1).\r |
| 1243 | \r |
| 1244 | Reads and returns the current value of MM1. This function is only available\r |
| 1245 | on IA-32 and X64.\r |
| 1246 | \r |
| 1247 | @return The current value of MM1.\r |
| 1248 | \r |
| 1249 | **/\r |
| 1250 | UINT64\r |
| 1251 | EFIAPI\r |
| 1252 | AsmReadMm1 (\r |
| 1253 | VOID\r |
| 1254 | )\r |
| 1255 | {\r |
| 1256 | UINT64 Data;\r |
| 1257 | \r |
| 1258 | __asm__ __volatile__ (\r |
| 1259 | "push %%eax \n\t"\r |
| 1260 | "push %%eax \n\t"\r |
| 1261 | "movq %%mm1, (%%esp)\n\t"\r |
| 1262 | "pop %%eax \n\t"\r |
| 1263 | "pop %%edx \n\t"\r |
| 1264 | : "=A" (Data) // %0\r |
| 1265 | );\r |
| 1266 | \r |
| 1267 | return Data;\r |
| 1268 | }\r |
| 1269 | \r |
| 1270 | \r |
| 1271 | /**\r |
| 1272 | Reads the current value of 64-bit MMX Register #2 (MM2).\r |
| 1273 | \r |
| 1274 | Reads and returns the current value of MM2. This function is only available\r |
| 1275 | on IA-32 and X64.\r |
| 1276 | \r |
| 1277 | @return The current value of MM2.\r |
| 1278 | \r |
| 1279 | **/\r |
| 1280 | UINT64\r |
| 1281 | EFIAPI\r |
| 1282 | AsmReadMm2 (\r |
| 1283 | VOID\r |
| 1284 | )\r |
| 1285 | {\r |
| 1286 | UINT64 Data;\r |
| 1287 | \r |
| 1288 | __asm__ __volatile__ (\r |
| 1289 | "push %%eax \n\t"\r |
| 1290 | "push %%eax \n\t"\r |
| 1291 | "movq %%mm2, (%%esp)\n\t"\r |
| 1292 | "pop %%eax \n\t"\r |
| 1293 | "pop %%edx \n\t"\r |
| 1294 | : "=A" (Data) // %0\r |
| 1295 | );\r |
| 1296 | \r |
| 1297 | return Data;\r |
| 1298 | }\r |
| 1299 | \r |
| 1300 | \r |
| 1301 | /**\r |
| 1302 | Reads the current value of 64-bit MMX Register #3 (MM3).\r |
| 1303 | \r |
| 1304 | Reads and returns the current value of MM3. This function is only available\r |
| 1305 | on IA-32 and X64.\r |
| 1306 | \r |
| 1307 | @return The current value of MM3.\r |
| 1308 | \r |
| 1309 | **/\r |
| 1310 | UINT64\r |
| 1311 | EFIAPI\r |
| 1312 | AsmReadMm3 (\r |
| 1313 | VOID\r |
| 1314 | )\r |
| 1315 | {\r |
| 1316 | UINT64 Data;\r |
| 1317 | \r |
| 1318 | __asm__ __volatile__ (\r |
| 1319 | "push %%eax \n\t"\r |
| 1320 | "push %%eax \n\t"\r |
| 1321 | "movq %%mm3, (%%esp)\n\t"\r |
| 1322 | "pop %%eax \n\t"\r |
| 1323 | "pop %%edx \n\t"\r |
| 1324 | : "=A" (Data) // %0\r |
| 1325 | );\r |
| 1326 | \r |
| 1327 | return Data;\r |
| 1328 | }\r |
| 1329 | \r |
| 1330 | \r |
| 1331 | /**\r |
| 1332 | Reads the current value of 64-bit MMX Register #4 (MM4).\r |
| 1333 | \r |
| 1334 | Reads and returns the current value of MM4. This function is only available\r |
| 1335 | on IA-32 and X64.\r |
| 1336 | \r |
| 1337 | @return The current value of MM4.\r |
| 1338 | \r |
| 1339 | **/\r |
| 1340 | UINT64\r |
| 1341 | EFIAPI\r |
| 1342 | AsmReadMm4 (\r |
| 1343 | VOID\r |
| 1344 | )\r |
| 1345 | {\r |
| 1346 | UINT64 Data;\r |
| 1347 | \r |
| 1348 | __asm__ __volatile__ (\r |
| 1349 | "push %%eax \n\t"\r |
| 1350 | "push %%eax \n\t"\r |
| 1351 | "movq %%mm4, (%%esp)\n\t"\r |
| 1352 | "pop %%eax \n\t"\r |
| 1353 | "pop %%edx \n\t"\r |
| 1354 | : "=A" (Data) // %0\r |
| 1355 | );\r |
| 1356 | \r |
| 1357 | return Data;\r |
| 1358 | }\r |
| 1359 | \r |
| 1360 | \r |
| 1361 | /**\r |
| 1362 | Reads the current value of 64-bit MMX Register #5 (MM5).\r |
| 1363 | \r |
| 1364 | Reads and returns the current value of MM5. This function is only available\r |
| 1365 | on IA-32 and X64.\r |
| 1366 | \r |
| 1367 | @return The current value of MM5.\r |
| 1368 | \r |
| 1369 | **/\r |
| 1370 | UINT64\r |
| 1371 | EFIAPI\r |
| 1372 | AsmReadMm5 (\r |
| 1373 | VOID\r |
| 1374 | )\r |
| 1375 | {\r |
| 1376 | UINT64 Data;\r |
| 1377 | \r |
| 1378 | __asm__ __volatile__ (\r |
| 1379 | "push %%eax \n\t"\r |
| 1380 | "push %%eax \n\t"\r |
| 1381 | "movq %%mm5, (%%esp)\n\t"\r |
| 1382 | "pop %%eax \n\t"\r |
| 1383 | "pop %%edx \n\t"\r |
| 1384 | : "=A" (Data) // %0\r |
| 1385 | );\r |
| 1386 | \r |
| 1387 | return Data;\r |
| 1388 | }\r |
| 1389 | \r |
| 1390 | \r |
| 1391 | /**\r |
| 1392 | Reads the current value of 64-bit MMX Register #6 (MM6).\r |
| 1393 | \r |
| 1394 | Reads and returns the current value of MM6. This function is only available\r |
| 1395 | on IA-32 and X64.\r |
| 1396 | \r |
| 1397 | @return The current value of MM6.\r |
| 1398 | \r |
| 1399 | **/\r |
| 1400 | UINT64\r |
| 1401 | EFIAPI\r |
| 1402 | AsmReadMm6 (\r |
| 1403 | VOID\r |
| 1404 | )\r |
| 1405 | {\r |
| 1406 | UINT64 Data;\r |
| 1407 | \r |
| 1408 | __asm__ __volatile__ (\r |
| 1409 | "push %%eax \n\t"\r |
| 1410 | "push %%eax \n\t"\r |
| 1411 | "movq %%mm6, (%%esp)\n\t"\r |
| 1412 | "pop %%eax \n\t"\r |
| 1413 | "pop %%edx \n\t"\r |
| 1414 | : "=A" (Data) // %0\r |
| 1415 | );\r |
| 1416 | \r |
| 1417 | return Data;\r |
| 1418 | }\r |
| 1419 | \r |
| 1420 | \r |
| 1421 | /**\r |
| 1422 | Reads the current value of 64-bit MMX Register #7 (MM7).\r |
| 1423 | \r |
| 1424 | Reads and returns the current value of MM7. This function is only available\r |
| 1425 | on IA-32 and X64.\r |
| 1426 | \r |
| 1427 | @return The current value of MM7.\r |
| 1428 | \r |
| 1429 | **/\r |
| 1430 | UINT64\r |
| 1431 | EFIAPI\r |
| 1432 | AsmReadMm7 (\r |
| 1433 | VOID\r |
| 1434 | )\r |
| 1435 | {\r |
| 1436 | UINT64 Data;\r |
| 1437 | \r |
| 1438 | __asm__ __volatile__ (\r |
| 1439 | "push %%eax \n\t"\r |
| 1440 | "push %%eax \n\t"\r |
| 1441 | "movq %%mm7, (%%esp)\n\t"\r |
| 1442 | "pop %%eax \n\t"\r |
| 1443 | "pop %%edx \n\t"\r |
| 1444 | : "=A" (Data) // %0\r |
| 1445 | );\r |
| 1446 | \r |
| 1447 | return Data;\r |
| 1448 | }\r |
| 1449 | \r |
| 1450 | \r |
| 1451 | /**\r |
| 1452 | Writes the current value of 64-bit MMX Register #0 (MM0).\r |
| 1453 | \r |
| 1454 | Writes the current value of MM0. This function is only available on IA32 and\r |
| 1455 | X64.\r |
| 1456 | \r |
| 1457 | @param Value The 64-bit value to write to MM0.\r |
| 1458 | \r |
| 1459 | **/\r |
| 1460 | VOID\r |
| 1461 | EFIAPI\r |
| 1462 | AsmWriteMm0 (\r |
| 1463 | IN UINT64 Value\r |
| 1464 | )\r |
| 1465 | {\r |
| 1466 | __asm__ __volatile__ (\r |
| 1467 | "movq %0, %%mm0" // %0\r |
| 1468 | : \r |
| 1469 | : "m" (Value)\r |
| 1470 | );\r |
| 1471 | }\r |
| 1472 | \r |
| 1473 | \r |
| 1474 | /**\r |
| 1475 | Writes the current value of 64-bit MMX Register #1 (MM1).\r |
| 1476 | \r |
| 1477 | Writes the current value of MM1. This function is only available on IA32 and\r |
| 1478 | X64.\r |
| 1479 | \r |
| 1480 | @param Value The 64-bit value to write to MM1.\r |
| 1481 | \r |
| 1482 | **/\r |
| 1483 | VOID\r |
| 1484 | EFIAPI\r |
| 1485 | AsmWriteMm1 (\r |
| 1486 | IN UINT64 Value\r |
| 1487 | )\r |
| 1488 | {\r |
| 1489 | __asm__ __volatile__ (\r |
| 1490 | "movq %0, %%mm1" // %0\r |
| 1491 | : \r |
| 1492 | : "m" (Value)\r |
| 1493 | );\r |
| 1494 | }\r |
| 1495 | \r |
| 1496 | \r |
| 1497 | /**\r |
| 1498 | Writes the current value of 64-bit MMX Register #2 (MM2).\r |
| 1499 | \r |
| 1500 | Writes the current value of MM2. This function is only available on IA32 and\r |
| 1501 | X64.\r |
| 1502 | \r |
| 1503 | @param Value The 64-bit value to write to MM2.\r |
| 1504 | \r |
| 1505 | **/\r |
| 1506 | VOID\r |
| 1507 | EFIAPI\r |
| 1508 | AsmWriteMm2 (\r |
| 1509 | IN UINT64 Value\r |
| 1510 | )\r |
| 1511 | {\r |
| 1512 | __asm__ __volatile__ (\r |
| 1513 | "movq %0, %%mm2" // %0\r |
| 1514 | : \r |
| 1515 | : "m" (Value)\r |
| 1516 | );\r |
| 1517 | }\r |
| 1518 | \r |
| 1519 | \r |
| 1520 | /**\r |
| 1521 | Writes the current value of 64-bit MMX Register #3 (MM3).\r |
| 1522 | \r |
| 1523 | Writes the current value of MM3. This function is only available on IA32 and\r |
| 1524 | X64.\r |
| 1525 | \r |
| 1526 | @param Value The 64-bit value to write to MM3.\r |
| 1527 | \r |
| 1528 | **/\r |
| 1529 | VOID\r |
| 1530 | EFIAPI\r |
| 1531 | AsmWriteMm3 (\r |
| 1532 | IN UINT64 Value\r |
| 1533 | )\r |
| 1534 | {\r |
| 1535 | __asm__ __volatile__ (\r |
| 1536 | "movq %0, %%mm3" // %0\r |
| 1537 | : \r |
| 1538 | : "m" (Value)\r |
| 1539 | );\r |
| 1540 | }\r |
| 1541 | \r |
| 1542 | \r |
| 1543 | /**\r |
| 1544 | Writes the current value of 64-bit MMX Register #4 (MM4).\r |
| 1545 | \r |
| 1546 | Writes the current value of MM4. This function is only available on IA32 and\r |
| 1547 | X64.\r |
| 1548 | \r |
| 1549 | @param Value The 64-bit value to write to MM4.\r |
| 1550 | \r |
| 1551 | **/\r |
| 1552 | VOID\r |
| 1553 | EFIAPI\r |
| 1554 | AsmWriteMm4 (\r |
| 1555 | IN UINT64 Value\r |
| 1556 | )\r |
| 1557 | {\r |
| 1558 | __asm__ __volatile__ (\r |
| 1559 | "movq %0, %%mm4" // %0\r |
| 1560 | : \r |
| 1561 | : "m" (Value)\r |
| 1562 | );\r |
| 1563 | }\r |
| 1564 | \r |
| 1565 | \r |
| 1566 | /**\r |
| 1567 | Writes the current value of 64-bit MMX Register #5 (MM5).\r |
| 1568 | \r |
| 1569 | Writes the current value of MM5. This function is only available on IA32 and\r |
| 1570 | X64.\r |
| 1571 | \r |
| 1572 | @param Value The 64-bit value to write to MM5.\r |
| 1573 | \r |
| 1574 | **/\r |
| 1575 | VOID\r |
| 1576 | EFIAPI\r |
| 1577 | AsmWriteMm5 (\r |
| 1578 | IN UINT64 Value\r |
| 1579 | )\r |
| 1580 | {\r |
| 1581 | __asm__ __volatile__ (\r |
| 1582 | "movq %0, %%mm5" // %0\r |
| 1583 | : \r |
| 1584 | : "m" (Value)\r |
| 1585 | );\r |
| 1586 | }\r |
| 1587 | \r |
| 1588 | \r |
| 1589 | /**\r |
| 1590 | Writes the current value of 64-bit MMX Register #6 (MM6).\r |
| 1591 | \r |
| 1592 | Writes the current value of MM6. This function is only available on IA32 and\r |
| 1593 | X64.\r |
| 1594 | \r |
| 1595 | @param Value The 64-bit value to write to MM6.\r |
| 1596 | \r |
| 1597 | **/\r |
| 1598 | VOID\r |
| 1599 | EFIAPI\r |
| 1600 | AsmWriteMm6 (\r |
| 1601 | IN UINT64 Value\r |
| 1602 | )\r |
| 1603 | {\r |
| 1604 | __asm__ __volatile__ (\r |
| 1605 | "movq %0, %%mm6" // %0\r |
| 1606 | : \r |
| 1607 | : "m" (Value)\r |
| 1608 | );\r |
| 1609 | }\r |
| 1610 | \r |
| 1611 | \r |
| 1612 | /**\r |
| 1613 | Writes the current value of 64-bit MMX Register #7 (MM7).\r |
| 1614 | \r |
| 1615 | Writes the current value of MM7. This function is only available on IA32 and\r |
| 1616 | X64.\r |
| 1617 | \r |
| 1618 | @param Value The 64-bit value to write to MM7.\r |
| 1619 | \r |
| 1620 | **/\r |
| 1621 | VOID\r |
| 1622 | EFIAPI\r |
| 1623 | AsmWriteMm7 (\r |
| 1624 | IN UINT64 Value\r |
| 1625 | )\r |
| 1626 | {\r |
| 1627 | __asm__ __volatile__ (\r |
| 1628 | "movq %0, %%mm7" // %0\r |
| 1629 | : \r |
| 1630 | : "m" (Value)\r |
| 1631 | );\r |
| 1632 | }\r |
| 1633 | \r |
| 1634 | \r |
| 1635 | /**\r |
| 1636 | Reads the current value of Time Stamp Counter (TSC).\r |
| 1637 | \r |
| 1638 | Reads and returns the current value of TSC. This function is only available\r |
| 1639 | on IA-32 and X64.\r |
| 1640 | \r |
| 1641 | @return The current value of TSC\r |
| 1642 | \r |
| 1643 | **/\r |
| 1644 | UINT64\r |
| 1645 | EFIAPI\r |
| 1646 | AsmReadTsc (\r |
| 1647 | VOID\r |
| 1648 | )\r |
| 1649 | {\r |
| 1650 | UINT64 Data;\r |
| 1651 | \r |
| 1652 | __asm__ __volatile__ (\r |
| 1653 | "rdtsc"\r |
| 1654 | : "=A" (Data)\r |
| 1655 | );\r |
| 1656 | \r |
| 1657 | return Data; \r |
| 1658 | }\r |
| 1659 | \r |
| 1660 | \r |
| 1661 | /**\r |
| 1662 | Reads the current value of a Performance Counter (PMC).\r |
| 1663 | \r |
| 1664 | Reads and returns the current value of performance counter specified by\r |
| 1665 | Index. This function is only available on IA-32 and X64.\r |
| 1666 | \r |
| 1667 | @param Index The 32-bit Performance Counter index to read.\r |
| 1668 | \r |
| 1669 | @return The value of the PMC specified by Index.\r |
| 1670 | \r |
| 1671 | **/\r |
| 1672 | UINT64\r |
| 1673 | EFIAPI\r |
| 1674 | AsmReadPmc (\r |
| 1675 | IN UINT32 Index\r |
| 1676 | )\r |
| 1677 | {\r |
| 1678 | UINT64 Data;\r |
| 1679 | \r |
| 1680 | __asm__ __volatile__ (\r |
| 1681 | "rdpmc"\r |
| 1682 | : "=A" (Data)\r |
| 1683 | : "c" (Index)\r |
| 1684 | );\r |
| 1685 | \r |
| 1686 | return Data; \r |
| 1687 | }\r |
| 1688 | \r |
| 1689 | \r |
| 1690 | \r |
| 1691 | \r |
| 1692 | /**\r |
| 1693 | Executes a WBINVD instruction.\r |
| 1694 | \r |
| 1695 | Executes a WBINVD instruction. This function is only available on IA-32 and\r |
| 1696 | X64.\r |
| 1697 | \r |
| 1698 | **/\r |
| 1699 | VOID\r |
| 1700 | EFIAPI\r |
| 1701 | AsmWbinvd (\r |
| 1702 | VOID\r |
| 1703 | )\r |
| 1704 | {\r |
| 1705 | __asm__ __volatile__ ("wbinvd":::"memory");\r |
| 1706 | }\r |
| 1707 | \r |
| 1708 | \r |
| 1709 | /**\r |
| 1710 | Executes a INVD instruction.\r |
| 1711 | \r |
| 1712 | Executes a INVD instruction. This function is only available on IA-32 and\r |
| 1713 | X64.\r |
| 1714 | \r |
| 1715 | **/\r |
| 1716 | VOID\r |
| 1717 | EFIAPI\r |
| 1718 | AsmInvd (\r |
| 1719 | VOID\r |
| 1720 | )\r |
| 1721 | {\r |
| 1722 | __asm__ __volatile__ ("invd":::"memory");\r |
| 1723 | \r |
| 1724 | }\r |
| 1725 | \r |
| 1726 | \r |
| 1727 | /**\r |
| 1728 | Flushes a cache line from all the instruction and data caches within the\r |
| 1729 | coherency domain of the CPU.\r |
| 1730 | \r |
| 1731 | Flushed the cache line specified by LinearAddress, and returns LinearAddress.\r |
| 1732 | This function is only available on IA-32 and X64.\r |
| 1733 | \r |
| 1734 | @param LinearAddress The address of the cache line to flush. If the CPU is\r |
| 1735 | in a physical addressing mode, then LinearAddress is a\r |
| 1736 | physical address. If the CPU is in a virtual\r |
| 1737 | addressing mode, then LinearAddress is a virtual\r |
| 1738 | address.\r |
| 1739 | \r |
| 1740 | @return LinearAddress\r |
| 1741 | **/\r |
| 1742 | VOID *\r |
| 1743 | EFIAPI\r |
| 1744 | AsmFlushCacheLine (\r |
| 1745 | IN VOID *LinearAddress\r |
| 1746 | )\r |
| 1747 | {\r |
| 1748 | __asm__ __volatile__ (\r |
| 1749 | "clflush (%0)"\r |
| 1750 | : "+a" (LinearAddress) \r |
| 1751 | : \r |
| 1752 | : "memory"\r |
| 1753 | );\r |
| 1754 | \r |
| 1755 | return LinearAddress;\r |
| 1756 | }\r |
| 1757 | \r |
| 1758 | \r |
projects / mirror_edk2.git / blame