1 /** @file 2 Root include file for Mde Package Base type modules 3 4 This is the include file for any module of type base. Base modules only use 5 types defined via this include file and can be ported easily to any 6 environment. There are a set of base libraries in the Mde Package that can 7 be used to implement base modules. 8 9 Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR> 10 Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> 11 This program and the accompanying materials 12 are licensed and made available under the terms and conditions of the BSD License 13 which accompanies this distribution. The full text of the license may be found at 14 http://opensource.org/licenses/bsd-license.php. 15 16 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 18 19 **/ 20 21 22 #ifndef __BASE_H__ 23 #define __BASE_H__ 24 25 // 26 // Include processor specific binding 27 // 28 #include <ProcessorBind.h> 29 30 #if defined(_MSC_EXTENSIONS) 31 // 32 // Disable warning when last field of data structure is a zero sized array. 33 // 34 #pragma warning ( disable : 4200 ) 35 #endif 36 37 /** 38 Verifies the storage size of a given data type. 39 40 This macro generates a divide by zero error or a zero size array declaration in 41 the preprocessor if the size is incorrect. These are declared as "extern" so 42 the space for these arrays will not be in the modules. 43 44 @param TYPE The date type to determine the size of. 45 @param Size The expected size for the TYPE. 46 47 **/ 48 #define VERIFY_SIZE_OF(TYPE, Size) extern UINT8 _VerifySizeof##TYPE[(sizeof(TYPE) == (Size)) / (sizeof(TYPE) == (Size))] 49 50 // 51 // Verify that ProcessorBind.h produced UEFI Data Types that are compliant with 52 // Section 2.3.1 of the UEFI 2.3 Specification. 53 // 54 VERIFY_SIZE_OF (BOOLEAN, 1); 55 VERIFY_SIZE_OF (INT8, 1); 56 VERIFY_SIZE_OF (UINT8, 1); 57 VERIFY_SIZE_OF (INT16, 2); 58 VERIFY_SIZE_OF (UINT16, 2); 59 VERIFY_SIZE_OF (INT32, 4); 60 VERIFY_SIZE_OF (UINT32, 4); 61 VERIFY_SIZE_OF (INT64, 8); 62 VERIFY_SIZE_OF (UINT64, 8); 63 VERIFY_SIZE_OF (CHAR8, 1); 64 VERIFY_SIZE_OF (CHAR16, 2); 65 66 // 67 // The following three enum types are used to verify that the compiler 68 // configuration for enum types is compliant with Section 2.3.1 of the 69 // UEFI 2.3 Specification. These enum types and enum values are not 70 // intended to be used. A prefix of '__' is used avoid conflicts with 71 // other types. 72 // 73 typedef enum { 74 __VerifyUint8EnumValue = 0xff 75 } __VERIFY_UINT8_ENUM_SIZE; 76 77 typedef enum { 78 __VerifyUint16EnumValue = 0xffff 79 } __VERIFY_UINT16_ENUM_SIZE; 80 81 typedef enum { 82 __VerifyUint32EnumValue = 0xffffffff 83 } __VERIFY_UINT32_ENUM_SIZE; 84 85 VERIFY_SIZE_OF (__VERIFY_UINT8_ENUM_SIZE, 4); 86 VERIFY_SIZE_OF (__VERIFY_UINT16_ENUM_SIZE, 4); 87 VERIFY_SIZE_OF (__VERIFY_UINT32_ENUM_SIZE, 4); 88 89 // 90 // The Microsoft* C compiler can removed references to unreferenced data items 91 // if the /OPT:REF linker option is used. We defined a macro as this is a 92 // a non standard extension 93 // 94 #if defined(_MSC_EXTENSIONS) && !defined (MDE_CPU_EBC) 95 /// 96 /// Remove global variable from the linked image if there are no references to 97 /// it after all compiler and linker optimizations have been performed. 98 /// 99 /// 100 #define GLOBAL_REMOVE_IF_UNREFERENCED __declspec(selectany) 101 #else 102 /// 103 /// Remove the global variable from the linked image if there are no references 104 /// to it after all compiler and linker optimizations have been performed. 105 /// 106 /// 107 #define GLOBAL_REMOVE_IF_UNREFERENCED 108 #endif 109 110 // 111 // Should be used in combination with NORETURN to avoid 'noreturn' returns 112 // warnings. 113 // 114 #ifndef UNREACHABLE 115 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 4) 116 /// 117 /// Signal compilers and analyzers that this call is not reachable. It is 118 /// up to the compiler to remove any code past that point. 119 /// Not implemented by GCC 4.4 or earlier. 120 /// 121 #define UNREACHABLE() __builtin_unreachable () 122 #elif defined (__has_feature) 123 #if __has_builtin (__builtin_unreachable) 124 /// 125 /// Signal compilers and analyzers that this call is not reachable. It is 126 /// up to the compiler to remove any code past that point. 127 /// 128 #define UNREACHABLE() __builtin_unreachable () 129 #endif 130 #endif 131 132 #ifndef UNREACHABLE 133 /// 134 /// Signal compilers and analyzers that this call is not reachable. It is 135 /// up to the compiler to remove any code past that point. 136 /// 137 #define UNREACHABLE() 138 #endif 139 #endif 140 141 // 142 // Signaling compilers and analyzers that a certain function cannot return may 143 // remove all following code and thus lead to better optimization and less 144 // false positives. 145 // 146 #ifndef NORETURN 147 #if defined (__GNUC__) || defined (__clang__) 148 /// 149 /// Signal compilers and analyzers that the function cannot return. 150 /// It is up to the compiler to remove any code past a call to functions 151 /// flagged with this attribute. 152 /// 153 #define NORETURN __attribute__((noreturn)) 154 #elif defined(_MSC_EXTENSIONS) && !defined(MDE_CPU_EBC) 155 /// 156 /// Signal compilers and analyzers that the function cannot return. 157 /// It is up to the compiler to remove any code past a call to functions 158 /// flagged with this attribute. 159 /// 160 #define NORETURN __declspec(noreturn) 161 #else 162 /// 163 /// Signal compilers and analyzers that the function cannot return. 164 /// It is up to the compiler to remove any code past a call to functions 165 /// flagged with this attribute. 166 /// 167 #define NORETURN 168 #endif 169 #endif 170 171 // 172 // Should be used in combination with ANALYZER_NORETURN to avoid 'noreturn' 173 // returns warnings. 174 // 175 #ifndef ANALYZER_UNREACHABLE 176 #ifdef __clang_analyzer__ 177 #if __has_builtin (__builtin_unreachable) 178 /// 179 /// Signal the analyzer that this call is not reachable. 180 /// This excludes compilers. 181 /// 182 #define ANALYZER_UNREACHABLE() __builtin_unreachable () 183 #endif 184 #endif 185 186 #ifndef ANALYZER_UNREACHABLE 187 /// 188 /// Signal the analyzer that this call is not reachable. 189 /// This excludes compilers. 190 /// 191 #define ANALYZER_UNREACHABLE() 192 #endif 193 #endif 194 195 // 196 // Static Analyzers may issue errors about potential NULL-dereferences when 197 // dereferencing a pointer, that has been checked before, outside of a 198 // NULL-check. This may lead to false positives, such as when using ASSERT() 199 // for verification. 200 // 201 #ifndef ANALYZER_NORETURN 202 #ifdef __has_feature 203 #if __has_feature (attribute_analyzer_noreturn) 204 /// 205 /// Signal analyzers that the function cannot return. 206 /// This excludes compilers. 207 /// 208 #define ANALYZER_NORETURN __attribute__((analyzer_noreturn)) 209 #endif 210 #endif 211 212 #ifndef ANALYZER_NORETURN 213 /// 214 /// Signal the analyzer that the function cannot return. 215 /// This excludes compilers. 216 /// 217 #define ANALYZER_NORETURN 218 #endif 219 #endif 220 221 // 222 // For symbol name in assembly code, an extra "_" is sometimes necessary 223 // 224 225 /// 226 /// Private worker functions for ASM_PFX() 227 /// 228 #define _CONCATENATE(a, b) __CONCATENATE(a, b) 229 #define __CONCATENATE(a, b) a ## b 230 231 /// 232 /// The __USER_LABEL_PREFIX__ macro predefined by GNUC represents the prefix 233 /// on symbols in assembly language. 234 /// 235 #define ASM_PFX(name) _CONCATENATE (__USER_LABEL_PREFIX__, name) 236 237 #if __APPLE__ 238 // 239 // Apple extension that is used by the linker to optimize code size 240 // with assembly functions. Put at the end of your .S files 241 // 242 #define ASM_FUNCTION_REMOVE_IF_UNREFERENCED .subsections_via_symbols 243 #else 244 #define ASM_FUNCTION_REMOVE_IF_UNREFERENCED 245 #endif 246 247 #ifdef __CC_ARM 248 // 249 // Older RVCT ARM compilers don't fully support #pragma pack and require __packed 250 // as a prefix for the structure. 251 // 252 #define PACKED __packed 253 #else 254 #define PACKED 255 #endif 256 257 /// 258 /// 128 bit buffer containing a unique identifier value. 259 /// Unless otherwise specified, aligned on a 64 bit boundary. 260 /// 261 typedef struct { 262 UINT32 Data1; 263 UINT16 Data2; 264 UINT16 Data3; 265 UINT8 Data4[8]; 266 } GUID; 267 268 // 269 // 8-bytes unsigned value that represents a physical system address. 270 // 271 typedef UINT64 PHYSICAL_ADDRESS; 272 273 /// 274 /// LIST_ENTRY structure definition. 275 /// 276 typedef struct _LIST_ENTRY LIST_ENTRY; 277 278 /// 279 /// _LIST_ENTRY structure definition. 280 /// 281 struct _LIST_ENTRY { 282 LIST_ENTRY *ForwardLink; 283 LIST_ENTRY *BackLink; 284 }; 285 286 // 287 // Modifiers to abstract standard types to aid in debug of problems 288 // 289 290 /// 291 /// Datum is read-only. 292 /// 293 #define CONST const 294 295 /// 296 /// Datum is scoped to the current file or function. 297 /// 298 #define STATIC static 299 300 /// 301 /// Undeclared type. 302 /// 303 #define VOID void 304 305 // 306 // Modifiers for Data Types used to self document code. 307 // This concept is borrowed for UEFI specification. 308 // 309 310 /// 311 /// Datum is passed to the function. 312 /// 313 #define IN 314 315 /// 316 /// Datum is returned from the function. 317 /// 318 #define OUT 319 320 /// 321 /// Passing the datum to the function is optional, and a NULL 322 /// is passed if the value is not supplied. 323 /// 324 #define OPTIONAL 325 326 // 327 // UEFI specification claims 1 and 0. We are concerned about the 328 // compiler portability so we did it this way. 329 // 330 331 /// 332 /// Boolean true value. UEFI Specification defines this value to be 1, 333 /// but this form is more portable. 334 /// 335 #define TRUE ((BOOLEAN)(1==1)) 336 337 /// 338 /// Boolean false value. UEFI Specification defines this value to be 0, 339 /// but this form is more portable. 340 /// 341 #define FALSE ((BOOLEAN)(0==1)) 342 343 /// 344 /// NULL pointer (VOID *) 345 /// 346 #define NULL ((VOID *) 0) 347 348 // 349 // Null character 350 // 351 #define CHAR_NULL 0x0000 352 353 /// 354 /// Maximum values for common UEFI Data Types 355 /// 356 #define MAX_INT8 ((INT8)0x7F) 357 #define MAX_UINT8 ((UINT8)0xFF) 358 #define MAX_INT16 ((INT16)0x7FFF) 359 #define MAX_UINT16 ((UINT16)0xFFFF) 360 #define MAX_INT32 ((INT32)0x7FFFFFFF) 361 #define MAX_UINT32 ((UINT32)0xFFFFFFFF) 362 #define MAX_INT64 ((INT64)0x7FFFFFFFFFFFFFFFULL) 363 #define MAX_UINT64 ((UINT64)0xFFFFFFFFFFFFFFFFULL) 364 365 #define BIT0 0x00000001 366 #define BIT1 0x00000002 367 #define BIT2 0x00000004 368 #define BIT3 0x00000008 369 #define BIT4 0x00000010 370 #define BIT5 0x00000020 371 #define BIT6 0x00000040 372 #define BIT7 0x00000080 373 #define BIT8 0x00000100 374 #define BIT9 0x00000200 375 #define BIT10 0x00000400 376 #define BIT11 0x00000800 377 #define BIT12 0x00001000 378 #define BIT13 0x00002000 379 #define BIT14 0x00004000 380 #define BIT15 0x00008000 381 #define BIT16 0x00010000 382 #define BIT17 0x00020000 383 #define BIT18 0x00040000 384 #define BIT19 0x00080000 385 #define BIT20 0x00100000 386 #define BIT21 0x00200000 387 #define BIT22 0x00400000 388 #define BIT23 0x00800000 389 #define BIT24 0x01000000 390 #define BIT25 0x02000000 391 #define BIT26 0x04000000 392 #define BIT27 0x08000000 393 #define BIT28 0x10000000 394 #define BIT29 0x20000000 395 #define BIT30 0x40000000 396 #define BIT31 0x80000000 397 #define BIT32 0x0000000100000000ULL 398 #define BIT33 0x0000000200000000ULL 399 #define BIT34 0x0000000400000000ULL 400 #define BIT35 0x0000000800000000ULL 401 #define BIT36 0x0000001000000000ULL 402 #define BIT37 0x0000002000000000ULL 403 #define BIT38 0x0000004000000000ULL 404 #define BIT39 0x0000008000000000ULL 405 #define BIT40 0x0000010000000000ULL 406 #define BIT41 0x0000020000000000ULL 407 #define BIT42 0x0000040000000000ULL 408 #define BIT43 0x0000080000000000ULL 409 #define BIT44 0x0000100000000000ULL 410 #define BIT45 0x0000200000000000ULL 411 #define BIT46 0x0000400000000000ULL 412 #define BIT47 0x0000800000000000ULL 413 #define BIT48 0x0001000000000000ULL 414 #define BIT49 0x0002000000000000ULL 415 #define BIT50 0x0004000000000000ULL 416 #define BIT51 0x0008000000000000ULL 417 #define BIT52 0x0010000000000000ULL 418 #define BIT53 0x0020000000000000ULL 419 #define BIT54 0x0040000000000000ULL 420 #define BIT55 0x0080000000000000ULL 421 #define BIT56 0x0100000000000000ULL 422 #define BIT57 0x0200000000000000ULL 423 #define BIT58 0x0400000000000000ULL 424 #define BIT59 0x0800000000000000ULL 425 #define BIT60 0x1000000000000000ULL 426 #define BIT61 0x2000000000000000ULL 427 #define BIT62 0x4000000000000000ULL 428 #define BIT63 0x8000000000000000ULL 429 430 #define SIZE_1KB 0x00000400 431 #define SIZE_2KB 0x00000800 432 #define SIZE_4KB 0x00001000 433 #define SIZE_8KB 0x00002000 434 #define SIZE_16KB 0x00004000 435 #define SIZE_32KB 0x00008000 436 #define SIZE_64KB 0x00010000 437 #define SIZE_128KB 0x00020000 438 #define SIZE_256KB 0x00040000 439 #define SIZE_512KB 0x00080000 440 #define SIZE_1MB 0x00100000 441 #define SIZE_2MB 0x00200000 442 #define SIZE_4MB 0x00400000 443 #define SIZE_8MB 0x00800000 444 #define SIZE_16MB 0x01000000 445 #define SIZE_32MB 0x02000000 446 #define SIZE_64MB 0x04000000 447 #define SIZE_128MB 0x08000000 448 #define SIZE_256MB 0x10000000 449 #define SIZE_512MB 0x20000000 450 #define SIZE_1GB 0x40000000 451 #define SIZE_2GB 0x80000000 452 #define SIZE_4GB 0x0000000100000000ULL 453 #define SIZE_8GB 0x0000000200000000ULL 454 #define SIZE_16GB 0x0000000400000000ULL 455 #define SIZE_32GB 0x0000000800000000ULL 456 #define SIZE_64GB 0x0000001000000000ULL 457 #define SIZE_128GB 0x0000002000000000ULL 458 #define SIZE_256GB 0x0000004000000000ULL 459 #define SIZE_512GB 0x0000008000000000ULL 460 #define SIZE_1TB 0x0000010000000000ULL 461 #define SIZE_2TB 0x0000020000000000ULL 462 #define SIZE_4TB 0x0000040000000000ULL 463 #define SIZE_8TB 0x0000080000000000ULL 464 #define SIZE_16TB 0x0000100000000000ULL 465 #define SIZE_32TB 0x0000200000000000ULL 466 #define SIZE_64TB 0x0000400000000000ULL 467 #define SIZE_128TB 0x0000800000000000ULL 468 #define SIZE_256TB 0x0001000000000000ULL 469 #define SIZE_512TB 0x0002000000000000ULL 470 #define SIZE_1PB 0x0004000000000000ULL 471 #define SIZE_2PB 0x0008000000000000ULL 472 #define SIZE_4PB 0x0010000000000000ULL 473 #define SIZE_8PB 0x0020000000000000ULL 474 #define SIZE_16PB 0x0040000000000000ULL 475 #define SIZE_32PB 0x0080000000000000ULL 476 #define SIZE_64PB 0x0100000000000000ULL 477 #define SIZE_128PB 0x0200000000000000ULL 478 #define SIZE_256PB 0x0400000000000000ULL 479 #define SIZE_512PB 0x0800000000000000ULL 480 #define SIZE_1EB 0x1000000000000000ULL 481 #define SIZE_2EB 0x2000000000000000ULL 482 #define SIZE_4EB 0x4000000000000000ULL 483 #define SIZE_8EB 0x8000000000000000ULL 484 485 #define BASE_1KB 0x00000400 486 #define BASE_2KB 0x00000800 487 #define BASE_4KB 0x00001000 488 #define BASE_8KB 0x00002000 489 #define BASE_16KB 0x00004000 490 #define BASE_32KB 0x00008000 491 #define BASE_64KB 0x00010000 492 #define BASE_128KB 0x00020000 493 #define BASE_256KB 0x00040000 494 #define BASE_512KB 0x00080000 495 #define BASE_1MB 0x00100000 496 #define BASE_2MB 0x00200000 497 #define BASE_4MB 0x00400000 498 #define BASE_8MB 0x00800000 499 #define BASE_16MB 0x01000000 500 #define BASE_32MB 0x02000000 501 #define BASE_64MB 0x04000000 502 #define BASE_128MB 0x08000000 503 #define BASE_256MB 0x10000000 504 #define BASE_512MB 0x20000000 505 #define BASE_1GB 0x40000000 506 #define BASE_2GB 0x80000000 507 #define BASE_4GB 0x0000000100000000ULL 508 #define BASE_8GB 0x0000000200000000ULL 509 #define BASE_16GB 0x0000000400000000ULL 510 #define BASE_32GB 0x0000000800000000ULL 511 #define BASE_64GB 0x0000001000000000ULL 512 #define BASE_128GB 0x0000002000000000ULL 513 #define BASE_256GB 0x0000004000000000ULL 514 #define BASE_512GB 0x0000008000000000ULL 515 #define BASE_1TB 0x0000010000000000ULL 516 #define BASE_2TB 0x0000020000000000ULL 517 #define BASE_4TB 0x0000040000000000ULL 518 #define BASE_8TB 0x0000080000000000ULL 519 #define BASE_16TB 0x0000100000000000ULL 520 #define BASE_32TB 0x0000200000000000ULL 521 #define BASE_64TB 0x0000400000000000ULL 522 #define BASE_128TB 0x0000800000000000ULL 523 #define BASE_256TB 0x0001000000000000ULL 524 #define BASE_512TB 0x0002000000000000ULL 525 #define BASE_1PB 0x0004000000000000ULL 526 #define BASE_2PB 0x0008000000000000ULL 527 #define BASE_4PB 0x0010000000000000ULL 528 #define BASE_8PB 0x0020000000000000ULL 529 #define BASE_16PB 0x0040000000000000ULL 530 #define BASE_32PB 0x0080000000000000ULL 531 #define BASE_64PB 0x0100000000000000ULL 532 #define BASE_128PB 0x0200000000000000ULL 533 #define BASE_256PB 0x0400000000000000ULL 534 #define BASE_512PB 0x0800000000000000ULL 535 #define BASE_1EB 0x1000000000000000ULL 536 #define BASE_2EB 0x2000000000000000ULL 537 #define BASE_4EB 0x4000000000000000ULL 538 #define BASE_8EB 0x8000000000000000ULL 539 540 // 541 // Support for variable length argument lists using the ANSI standard. 542 // 543 // Since we are using the ANSI standard we used the standard naming and 544 // did not follow the coding convention 545 // 546 // VA_LIST - typedef for argument list. 547 // VA_START (VA_LIST Marker, argument before the ...) - Init Marker for use. 548 // VA_END (VA_LIST Marker) - Clear Marker 549 // VA_ARG (VA_LIST Marker, var arg size) - Use Marker to get an argument from 550 // the ... list. You must know the size and pass it in this macro. 551 // VA_COPY (VA_LIST Dest, VA_LIST Start) - Initialize Dest as a copy of Start. 552 // 553 // example: 554 // 555 // UINTN 556 // ExampleVarArg ( 557 // IN UINTN NumberOfArgs, 558 // ... 559 // ) 560 // { 561 // VA_LIST Marker; 562 // UINTN Index; 563 // UINTN Result; 564 // 565 // // 566 // // Initialize the Marker 567 // // 568 // VA_START (Marker, NumberOfArgs); 569 // for (Index = 0, Result = 0; Index < NumberOfArgs; Index++) { 570 // // 571 // // The ... list is a series of UINTN values, so average them up. 572 // // 573 // Result += VA_ARG (Marker, UINTN); 574 // } 575 // 576 // VA_END (Marker); 577 // return Result 578 // } 579 // 580 581 /** 582 Return the size of argument that has been aligned to sizeof (UINTN). 583 584 @param n The parameter size to be aligned. 585 586 @return The aligned size. 587 **/ 588 #define _INT_SIZE_OF(n) ((sizeof (n) + sizeof (UINTN) - 1) &~(sizeof (UINTN) - 1)) 589 590 #if defined(__CC_ARM) 591 // 592 // RVCT ARM variable argument list support. 593 // 594 595 /// 596 /// Variable used to traverse the list of arguments. This type can vary by 597 /// implementation and could be an array or structure. 598 /// 599 #ifdef __APCS_ADSABI 600 typedef int *va_list[1]; 601 #define VA_LIST va_list 602 #else 603 typedef struct __va_list { void *__ap; } va_list; 604 #define VA_LIST va_list 605 #endif 606 607 #define VA_START(Marker, Parameter) __va_start(Marker, Parameter) 608 609 #define VA_ARG(Marker, TYPE) __va_arg(Marker, TYPE) 610 611 #define VA_END(Marker) ((void)0) 612 613 // For some ARM RVCT compilers, __va_copy is not defined 614 #ifndef __va_copy 615 #define __va_copy(dest, src) ((void)((dest) = (src))) 616 #endif 617 618 #define VA_COPY(Dest, Start) __va_copy (Dest, Start) 619 620 #elif defined(__GNUC__) 621 622 #if defined(MDE_CPU_X64) && !defined(NO_MSABI_VA_FUNCS) 623 // 624 // X64 only. Use MS ABI version of GCC built-in macros for variable argument lists. 625 // 626 /// 627 /// Both GCC and LLVM 3.8 for X64 support new variable argument intrinsics for Microsoft ABI 628 /// 629 630 /// 631 /// Variable used to traverse the list of arguments. This type can vary by 632 /// implementation and could be an array or structure. 633 /// 634 typedef __builtin_ms_va_list VA_LIST; 635 636 #define VA_START(Marker, Parameter) __builtin_ms_va_start (Marker, Parameter) 637 638 #define VA_ARG(Marker, TYPE) ((sizeof (TYPE) < sizeof (UINTN)) ? (TYPE)(__builtin_va_arg (Marker, UINTN)) : (TYPE)(__builtin_va_arg (Marker, TYPE))) 639 640 #define VA_END(Marker) __builtin_ms_va_end (Marker) 641 642 #define VA_COPY(Dest, Start) __builtin_ms_va_copy (Dest, Start) 643 644 #else 645 // 646 // Use GCC built-in macros for variable argument lists. 647 // 648 649 /// 650 /// Variable used to traverse the list of arguments. This type can vary by 651 /// implementation and could be an array or structure. 652 /// 653 typedef __builtin_va_list VA_LIST; 654 655 #define VA_START(Marker, Parameter) __builtin_va_start (Marker, Parameter) 656 657 #define VA_ARG(Marker, TYPE) ((sizeof (TYPE) < sizeof (UINTN)) ? (TYPE)(__builtin_va_arg (Marker, UINTN)) : (TYPE)(__builtin_va_arg (Marker, TYPE))) 658 659 #define VA_END(Marker) __builtin_va_end (Marker) 660 661 #define VA_COPY(Dest, Start) __builtin_va_copy (Dest, Start) 662 663 #endif 664 665 #else 666 /// 667 /// Variable used to traverse the list of arguments. This type can vary by 668 /// implementation and could be an array or structure. 669 /// 670 typedef CHAR8 *VA_LIST; 671 672 /** 673 Retrieves a pointer to the beginning of a variable argument list, based on 674 the name of the parameter that immediately precedes the variable argument list. 675 676 This function initializes Marker to point to the beginning of the variable 677 argument list that immediately follows Parameter. The method for computing the 678 pointer to the next argument in the argument list is CPU-specific following the 679 EFIAPI ABI. 680 681 @param Marker The VA_LIST used to traverse the list of arguments. 682 @param Parameter The name of the parameter that immediately precedes 683 the variable argument list. 684 685 @return A pointer to the beginning of a variable argument list. 686 687 **/ 688 #define VA_START(Marker, Parameter) (Marker = (VA_LIST) ((UINTN) & (Parameter) + _INT_SIZE_OF (Parameter))) 689 690 /** 691 Returns an argument of a specified type from a variable argument list and updates 692 the pointer to the variable argument list to point to the next argument. 693 694 This function returns an argument of the type specified by TYPE from the beginning 695 of the variable argument list specified by Marker. Marker is then updated to point 696 to the next argument in the variable argument list. The method for computing the 697 pointer to the next argument in the argument list is CPU-specific following the EFIAPI ABI. 698 699 @param Marker VA_LIST used to traverse the list of arguments. 700 @param TYPE The type of argument to retrieve from the beginning 701 of the variable argument list. 702 703 @return An argument of the type specified by TYPE. 704 705 **/ 706 #define VA_ARG(Marker, TYPE) (*(TYPE *) ((Marker += _INT_SIZE_OF (TYPE)) - _INT_SIZE_OF (TYPE))) 707 708 /** 709 Terminates the use of a variable argument list. 710 711 This function initializes Marker so it can no longer be used with VA_ARG(). 712 After this macro is used, the only way to access the variable argument list is 713 by using VA_START() again. 714 715 @param Marker VA_LIST used to traverse the list of arguments. 716 717 **/ 718 #define VA_END(Marker) (Marker = (VA_LIST) 0) 719 720 /** 721 Initializes a VA_LIST as a copy of an existing VA_LIST. 722 723 This macro initializes Dest as a copy of Start, as if the VA_START macro had been applied to Dest 724 followed by the same sequence of uses of the VA_ARG macro as had previously been used to reach 725 the present state of Start. 726 727 @param Dest VA_LIST used to traverse the list of arguments. 728 @param Start VA_LIST used to traverse the list of arguments. 729 730 **/ 731 #define VA_COPY(Dest, Start) ((void)((Dest) = (Start))) 732 733 #endif 734 735 /// 736 /// Pointer to the start of a variable argument list stored in a memory buffer. Same as UINT8 *. 737 /// 738 typedef UINTN *BASE_LIST; 739 740 /** 741 Returns the size of a data type in sizeof(UINTN) units rounded up to the nearest UINTN boundary. 742 743 @param TYPE The date type to determine the size of. 744 745 @return The size of TYPE in sizeof (UINTN) units rounded up to the nearest UINTN boundary. 746 **/ 747 #define _BASE_INT_SIZE_OF(TYPE) ((sizeof (TYPE) + sizeof (UINTN) - 1) / sizeof (UINTN)) 748 749 /** 750 Returns an argument of a specified type from a variable argument list and updates 751 the pointer to the variable argument list to point to the next argument. 752 753 This function returns an argument of the type specified by TYPE from the beginning 754 of the variable argument list specified by Marker. Marker is then updated to point 755 to the next argument in the variable argument list. The method for computing the 756 pointer to the next argument in the argument list is CPU specific following the EFIAPI ABI. 757 758 @param Marker The pointer to the beginning of a variable argument list. 759 @param TYPE The type of argument to retrieve from the beginning 760 of the variable argument list. 761 762 @return An argument of the type specified by TYPE. 763 764 **/ 765 #define BASE_ARG(Marker, TYPE) (*(TYPE *) ((Marker += _BASE_INT_SIZE_OF (TYPE)) - _BASE_INT_SIZE_OF (TYPE))) 766 767 /** 768 The macro that returns the byte offset of a field in a data structure. 769 770 This function returns the offset, in bytes, of field specified by Field from the 771 beginning of the data structure specified by TYPE. If TYPE does not contain Field, 772 the module will not compile. 773 774 @param TYPE The name of the data structure that contains the field specified by Field. 775 @param Field The name of the field in the data structure. 776 777 @return Offset, in bytes, of field. 778 779 **/ 780 #ifdef __GNUC__ 781 #if __GNUC__ >= 4 782 #define OFFSET_OF(TYPE, Field) ((UINTN) __builtin_offsetof(TYPE, Field)) 783 #endif 784 #endif 785 786 #ifndef OFFSET_OF 787 #define OFFSET_OF(TYPE, Field) ((UINTN) &(((TYPE *)0)->Field)) 788 #endif 789 790 /** 791 Macro that returns a pointer to the data structure that contains a specified field of 792 that data structure. This is a lightweight method to hide information by placing a 793 public data structure inside a larger private data structure and using a pointer to 794 the public data structure to retrieve a pointer to the private data structure. 795 796 This function computes the offset, in bytes, of field specified by Field from the beginning 797 of the data structure specified by TYPE. This offset is subtracted from Record, and is 798 used to return a pointer to a data structure of the type specified by TYPE. If the data type 799 specified by TYPE does not contain the field specified by Field, then the module will not compile. 800 801 @param Record Pointer to the field specified by Field within a data structure of type TYPE. 802 @param TYPE The name of the data structure type to return. This data structure must 803 contain the field specified by Field. 804 @param Field The name of the field in the data structure specified by TYPE to which Record points. 805 806 @return A pointer to the structure from one of it's elements. 807 808 **/ 809 #define BASE_CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field))) 810 811 /** 812 Rounds a value up to the next boundary using a specified alignment. 813 814 This function rounds Value up to the next boundary using the specified Alignment. 815 This aligned value is returned. 816 817 @param Value The value to round up. 818 @param Alignment The alignment boundary used to return the aligned value. 819 820 @return A value up to the next boundary. 821 822 **/ 823 #define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & ((Alignment) - 1))) 824 825 /** 826 Adjust a pointer by adding the minimum offset required for it to be aligned on 827 a specified alignment boundary. 828 829 This function rounds the pointer specified by Pointer to the next alignment boundary 830 specified by Alignment. The pointer to the aligned address is returned. 831 832 @param Pointer The pointer to round up. 833 @param Alignment The alignment boundary to use to return an aligned pointer. 834 835 @return Pointer to the aligned address. 836 837 **/ 838 #define ALIGN_POINTER(Pointer, Alignment) ((VOID *) (ALIGN_VALUE ((UINTN)(Pointer), (Alignment)))) 839 840 /** 841 Rounds a value up to the next natural boundary for the current CPU. 842 This is 4-bytes for 32-bit CPUs and 8-bytes for 64-bit CPUs. 843 844 This function rounds the value specified by Value up to the next natural boundary for the 845 current CPU. This rounded value is returned. 846 847 @param Value The value to round up. 848 849 @return Rounded value specified by Value. 850 851 **/ 852 #define ALIGN_VARIABLE(Value) ALIGN_VALUE ((Value), sizeof (UINTN)) 853 854 855 /** 856 Return the maximum of two operands. 857 858 This macro returns the maximum of two operand specified by a and b. 859 Both a and b must be the same numerical types, signed or unsigned. 860 861 @param a The first operand with any numerical type. 862 @param b The second operand. Can be any numerical type as long as is 863 the same type as a. 864 865 @return Maximum of two operands. 866 867 **/ 868 #define MAX(a, b) \ 869 (((a) > (b)) ? (a) : (b)) 870 871 /** 872 Return the minimum of two operands. 873 874 This macro returns the minimal of two operand specified by a and b. 875 Both a and b must be the same numerical types, signed or unsigned. 876 877 @param a The first operand with any numerical type. 878 @param b The second operand. It should be the same any numerical type with a. 879 880 @return Minimum of two operands. 881 882 **/ 883 #define MIN(a, b) \ 884 (((a) < (b)) ? (a) : (b)) 885 886 /** 887 Return the absolute value of a signed operand. 888 889 This macro returns the absolute value of the signed operand specified by a. 890 891 @param a The signed operand. 892 893 @return The absolute value of the signed operand. 894 895 **/ 896 #define ABS(a) \ 897 (((a) < 0) ? (-(a)) : (a)) 898 899 // 900 // Status codes common to all execution phases 901 // 902 typedef UINTN RETURN_STATUS; 903 904 /** 905 Produces a RETURN_STATUS code with the highest bit set. 906 907 @param StatusCode The status code value to convert into a warning code. 908 StatusCode must be in the range 0x00000000..0x7FFFFFFF. 909 910 @return The value specified by StatusCode with the highest bit set. 911 912 **/ 913 #define ENCODE_ERROR(StatusCode) ((RETURN_STATUS)(MAX_BIT | (StatusCode))) 914 915 /** 916 Produces a RETURN_STATUS code with the highest bit clear. 917 918 @param StatusCode The status code value to convert into a warning code. 919 StatusCode must be in the range 0x00000000..0x7FFFFFFF. 920 921 @return The value specified by StatusCode with the highest bit clear. 922 923 **/ 924 #define ENCODE_WARNING(StatusCode) ((RETURN_STATUS)(StatusCode)) 925 926 /** 927 Returns TRUE if a specified RETURN_STATUS code is an error code. 928 929 This function returns TRUE if StatusCode has the high bit set. Otherwise, FALSE is returned. 930 931 @param StatusCode The status code value to evaluate. 932 933 @retval TRUE The high bit of StatusCode is set. 934 @retval FALSE The high bit of StatusCode is clear. 935 936 **/ 937 #define RETURN_ERROR(StatusCode) (((INTN)(RETURN_STATUS)(StatusCode)) < 0) 938 939 /// 940 /// The operation completed successfully. 941 /// 942 #define RETURN_SUCCESS 0 943 944 /// 945 /// The image failed to load. 946 /// 947 #define RETURN_LOAD_ERROR ENCODE_ERROR (1) 948 949 /// 950 /// The parameter was incorrect. 951 /// 952 #define RETURN_INVALID_PARAMETER ENCODE_ERROR (2) 953 954 /// 955 /// The operation is not supported. 956 /// 957 #define RETURN_UNSUPPORTED ENCODE_ERROR (3) 958 959 /// 960 /// The buffer was not the proper size for the request. 961 /// 962 #define RETURN_BAD_BUFFER_SIZE ENCODE_ERROR (4) 963 964 /// 965 /// The buffer was not large enough to hold the requested data. 966 /// The required buffer size is returned in the appropriate 967 /// parameter when this error occurs. 968 /// 969 #define RETURN_BUFFER_TOO_SMALL ENCODE_ERROR (5) 970 971 /// 972 /// There is no data pending upon return. 973 /// 974 #define RETURN_NOT_READY ENCODE_ERROR (6) 975 976 /// 977 /// The physical device reported an error while attempting the 978 /// operation. 979 /// 980 #define RETURN_DEVICE_ERROR ENCODE_ERROR (7) 981 982 /// 983 /// The device can not be written to. 984 /// 985 #define RETURN_WRITE_PROTECTED ENCODE_ERROR (8) 986 987 /// 988 /// The resource has run out. 989 /// 990 #define RETURN_OUT_OF_RESOURCES ENCODE_ERROR (9) 991 992 /// 993 /// An inconsistency was detected on the file system causing the 994 /// operation to fail. 995 /// 996 #define RETURN_VOLUME_CORRUPTED ENCODE_ERROR (10) 997 998 /// 999 /// There is no more space on the file system. 1000 /// 1001 #define RETURN_VOLUME_FULL ENCODE_ERROR (11) 1002 1003 /// 1004 /// The device does not contain any medium to perform the 1005 /// operation. 1006 /// 1007 #define RETURN_NO_MEDIA ENCODE_ERROR (12) 1008 1009 /// 1010 /// The medium in the device has changed since the last 1011 /// access. 1012 /// 1013 #define RETURN_MEDIA_CHANGED ENCODE_ERROR (13) 1014 1015 /// 1016 /// The item was not found. 1017 /// 1018 #define RETURN_NOT_FOUND ENCODE_ERROR (14) 1019 1020 /// 1021 /// Access was denied. 1022 /// 1023 #define RETURN_ACCESS_DENIED ENCODE_ERROR (15) 1024 1025 /// 1026 /// The server was not found or did not respond to the request. 1027 /// 1028 #define RETURN_NO_RESPONSE ENCODE_ERROR (16) 1029 1030 /// 1031 /// A mapping to the device does not exist. 1032 /// 1033 #define RETURN_NO_MAPPING ENCODE_ERROR (17) 1034 1035 /// 1036 /// A timeout time expired. 1037 /// 1038 #define RETURN_TIMEOUT ENCODE_ERROR (18) 1039 1040 /// 1041 /// The protocol has not been started. 1042 /// 1043 #define RETURN_NOT_STARTED ENCODE_ERROR (19) 1044 1045 /// 1046 /// The protocol has already been started. 1047 /// 1048 #define RETURN_ALREADY_STARTED ENCODE_ERROR (20) 1049 1050 /// 1051 /// The operation was aborted. 1052 /// 1053 #define RETURN_ABORTED ENCODE_ERROR (21) 1054 1055 /// 1056 /// An ICMP error occurred during the network operation. 1057 /// 1058 #define RETURN_ICMP_ERROR ENCODE_ERROR (22) 1059 1060 /// 1061 /// A TFTP error occurred during the network operation. 1062 /// 1063 #define RETURN_TFTP_ERROR ENCODE_ERROR (23) 1064 1065 /// 1066 /// A protocol error occurred during the network operation. 1067 /// 1068 #define RETURN_PROTOCOL_ERROR ENCODE_ERROR (24) 1069 1070 /// 1071 /// A function encountered an internal version that was 1072 /// incompatible with a version requested by the caller. 1073 /// 1074 #define RETURN_INCOMPATIBLE_VERSION ENCODE_ERROR (25) 1075 1076 /// 1077 /// The function was not performed due to a security violation. 1078 /// 1079 #define RETURN_SECURITY_VIOLATION ENCODE_ERROR (26) 1080 1081 /// 1082 /// A CRC error was detected. 1083 /// 1084 #define RETURN_CRC_ERROR ENCODE_ERROR (27) 1085 1086 /// 1087 /// The beginning or end of media was reached. 1088 /// 1089 #define RETURN_END_OF_MEDIA ENCODE_ERROR (28) 1090 1091 /// 1092 /// The end of the file was reached. 1093 /// 1094 #define RETURN_END_OF_FILE ENCODE_ERROR (31) 1095 1096 /// 1097 /// The language specified was invalid. 1098 /// 1099 #define RETURN_INVALID_LANGUAGE ENCODE_ERROR (32) 1100 1101 /// 1102 /// The security status of the data is unknown or compromised 1103 /// and the data must be updated or replaced to restore a valid 1104 /// security status. 1105 /// 1106 #define RETURN_COMPROMISED_DATA ENCODE_ERROR (33) 1107 1108 /// 1109 /// A HTTP error occurred during the network operation. 1110 /// 1111 #define RETURN_HTTP_ERROR ENCODE_ERROR (35) 1112 1113 /// 1114 /// The string contained one or more characters that 1115 /// the device could not render and were skipped. 1116 /// 1117 #define RETURN_WARN_UNKNOWN_GLYPH ENCODE_WARNING (1) 1118 1119 /// 1120 /// The handle was closed, but the file was not deleted. 1121 /// 1122 #define RETURN_WARN_DELETE_FAILURE ENCODE_WARNING (2) 1123 1124 /// 1125 /// The handle was closed, but the data to the file was not 1126 /// flushed properly. 1127 /// 1128 #define RETURN_WARN_WRITE_FAILURE ENCODE_WARNING (3) 1129 1130 /// 1131 /// The resulting buffer was too small, and the data was 1132 /// truncated to the buffer size. 1133 /// 1134 #define RETURN_WARN_BUFFER_TOO_SMALL ENCODE_WARNING (4) 1135 1136 /// 1137 /// The data has not been updated within the timeframe set by 1138 /// local policy for this type of data. 1139 /// 1140 #define RETURN_WARN_STALE_DATA ENCODE_WARNING (5) 1141 1142 /// 1143 /// The resulting buffer contains UEFI-compliant file system. 1144 /// 1145 #define RETURN_WARN_FILE_SYSTEM ENCODE_WARNING (6) 1146 1147 1148 /** 1149 Returns a 16-bit signature built from 2 ASCII characters. 1150 1151 This macro returns a 16-bit value built from the two ASCII characters specified 1152 by A and B. 1153 1154 @param A The first ASCII character. 1155 @param B The second ASCII character. 1156 1157 @return A 16-bit value built from the two ASCII characters specified by A and B. 1158 1159 **/ 1160 #define SIGNATURE_16(A, B) ((A) | (B << 8)) 1161 1162 /** 1163 Returns a 32-bit signature built from 4 ASCII characters. 1164 1165 This macro returns a 32-bit value built from the four ASCII characters specified 1166 by A, B, C, and D. 1167 1168 @param A The first ASCII character. 1169 @param B The second ASCII character. 1170 @param C The third ASCII character. 1171 @param D The fourth ASCII character. 1172 1173 @return A 32-bit value built from the two ASCII characters specified by A, B, 1174 C and D. 1175 1176 **/ 1177 #define SIGNATURE_32(A, B, C, D) (SIGNATURE_16 (A, B) | (SIGNATURE_16 (C, D) << 16)) 1178 1179 /** 1180 Returns a 64-bit signature built from 8 ASCII characters. 1181 1182 This macro returns a 64-bit value built from the eight ASCII characters specified 1183 by A, B, C, D, E, F, G,and H. 1184 1185 @param A The first ASCII character. 1186 @param B The second ASCII character. 1187 @param C The third ASCII character. 1188 @param D The fourth ASCII character. 1189 @param E The fifth ASCII character. 1190 @param F The sixth ASCII character. 1191 @param G The seventh ASCII character. 1192 @param H The eighth ASCII character. 1193 1194 @return A 64-bit value built from the two ASCII characters specified by A, B, 1195 C, D, E, F, G and H. 1196 1197 **/ 1198 #define SIGNATURE_64(A, B, C, D, E, F, G, H) \ 1199 (SIGNATURE_32 (A, B, C, D) | ((UINT64) (SIGNATURE_32 (E, F, G, H)) << 32)) 1200 1201 #if defined(_MSC_EXTENSIONS) && !defined (__INTEL_COMPILER) && !defined (MDE_CPU_EBC) 1202 #pragma intrinsic(_ReturnAddress) 1203 /** 1204 Get the return address of the calling function. 1205 1206 Based on intrinsic function _ReturnAddress that provides the address of 1207 the instruction in the calling function that will be executed after 1208 control returns to the caller. 1209 1210 @param L Return Level. 1211 1212 @return The return address of the calling function or 0 if L != 0. 1213 1214 **/ 1215 #define RETURN_ADDRESS(L) ((L == 0) ? _ReturnAddress() : (VOID *) 0) 1216 #elif defined(__GNUC__) 1217 void * __builtin_return_address (unsigned int level); 1218 /** 1219 Get the return address of the calling function. 1220 1221 Based on built-in Function __builtin_return_address that returns 1222 the return address of the current function, or of one of its callers. 1223 1224 @param L Return Level. 1225 1226 @return The return address of the calling function. 1227 1228 **/ 1229 #define RETURN_ADDRESS(L) __builtin_return_address (L) 1230 #else 1231 /** 1232 Get the return address of the calling function. 1233 1234 @param L Return Level. 1235 1236 @return 0 as compilers don't support this feature. 1237 1238 **/ 1239 #define RETURN_ADDRESS(L) ((VOID *) 0) 1240 #endif 1241 1242 /** 1243 Return the number of elements in an array. 1244 1245 @param Array An object of array type. Array is only used as an argument to 1246 the sizeof operator, therefore Array is never evaluated. The 1247 caller is responsible for ensuring that Array's type is not 1248 incomplete; that is, Array must have known constant size. 1249 1250 @return The number of elements in Array. The result has type UINTN. 1251 1252 **/ 1253 #define ARRAY_SIZE(Array) (sizeof (Array) / sizeof ((Array)[0])) 1254 1255 #endif 1256 1257
