1 /** @file 2 3 Copyright (c) 2013, ARM Ltd. All rights reserved.<BR> 4 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 Module Name: 14 15 EfiBind.h 16 17 Abstract: 18 19 Processor or Compiler specific defines and types for AArch64. 20 We are using the ANSI C 2000 _t type definitions for basic types. 21 This it technically a violation of the coding standard, but they 22 are used to make EfiTypes.h portable. Code other than EfiTypes.h 23 should never use any ANSI C 2000 _t integer types. 24 25 **/ 26 27 28 #ifndef _EFI_BIND_H_ 29 #define _EFI_BIND_H_ 30 31 32 #define EFI_DRIVER_ENTRY_POINT(InitFunction) 33 #define EFI_APPLICATION_ENTRY_POINT EFI_DRIVER_ENTRY_POINT 34 35 36 // 37 // Make sure we are using the correct packing rules per EFI specification. 38 // 39 #ifndef __GNUC__ 40 #pragma pack() 41 #endif 42 43 44 // 45 // Assume standard AArch64 alignment. 46 // BugBug: Need to check portability of long long 47 // 48 typedef unsigned long long uint64_t; 49 typedef long long int64_t; 50 typedef unsigned int uint32_t; 51 typedef int int32_t; 52 typedef unsigned short uint16_t; 53 typedef short int16_t; 54 typedef unsigned char uint8_t; 55 typedef signed char int8_t; 56 57 // 58 // Native integer size in stdint.h 59 // 60 typedef uint64_t uintn_t; 61 typedef int64_t intn_t; 62 63 // 64 // Processor specific defines 65 // 66 #define EFI_MAX_BIT 0x8000000000000000 67 #define MAX_2_BITS 0xC000000000000000 68 69 // 70 // Maximum legal AArch64 address 71 // 72 #define EFI_MAX_ADDRESS 0xFFFFFFFFFFFFFFFF 73 74 // 75 // Bad pointer value to use in check builds. 76 // if you see this value you are using uninitialized or free'ed data 77 // 78 #define EFI_BAD_POINTER 0xAFAFAFAFAFAFAFAF 79 #define EFI_BAD_POINTER_AS_BYTE 0xAF 80 81 #define EFI_DEADLOOP() { volatile UINTN __iii; __iii = 1; while (__iii); } 82 83 // 84 // For real hardware, just put in a halt loop. Don't do a while(1) because the 85 // compiler will optimize away the rest of the function following, so that you run out in 86 // the weeds if you skip over it with a debugger. 87 // 88 #define EFI_BREAKPOINT EFI_DEADLOOP() 89 90 91 // 92 // Memory Fence forces serialization, and is needed to support out of order 93 // memory transactions. The Memory Fence is mainly used to make sure IO 94 // transactions complete in a deterministic sequence, and to syncronize locks 95 // an other MP code. Currently no memory fencing is required. 96 // 97 #define MEMORY_FENCE() 98 99 // 100 // Some compilers don't support the forward reference construct: 101 // typedef struct XXXXX. The forward reference is required for 102 // ANSI compatibility. 103 // 104 // The following macro provide a workaround for such cases. 105 // 106 107 108 #ifdef EFI_NO_INTERFACE_DECL 109 #define EFI_FORWARD_DECLARATION(x) 110 #else 111 #define EFI_FORWARD_DECLARATION(x) typedef struct _##x x 112 #endif 113 114 115 // 116 // Some C compilers optimize the calling conventions to increase performance. 117 // _EFIAPI is used to make all public APIs follow the standard C calling 118 // convention. 119 // 120 #define _EFIAPI 121 122 123 124 // 125 // For symbol name in GNU assembly code, an extra "_" is necessary 126 // 127 #if defined(__GNUC__) 128 /// 129 /// Private worker functions for ASM_PFX() 130 /// 131 #define _CONCATENATE(a, b) __CONCATENATE(a, b) 132 #define __CONCATENATE(a, b) a ## b 133 134 /// 135 /// The __USER_LABEL_PREFIX__ macro predefined by GNUC represents the prefix 136 /// on symbols in assembly language. 137 /// 138 #define ASM_PFX(name) _CONCATENATE (__USER_LABEL_PREFIX__, name) 139 140 #endif 141 142 #endif 143 144
