1 /** @file 2 Processor or Compiler specific defines and types for RISC-V 3 4 Copyright (c) 2016 - 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR> 5 6 SPDX-License-Identifier: BSD-2-Clause-Patent 7 8 **/ 9 10 #ifndef PROCESSOR_BIND_H__ 11 #define PROCESSOR_BIND_H__ 12 13 /// 14 /// Define the processor type so other code can make processor based choices 15 /// 16 #define MDE_CPU_RISCV64 17 18 // 19 // Make sure we are using the correct packing rules per EFI specification 20 // 21 #if !defined(__GNUC__) 22 #pragma pack() 23 #endif 24 25 /// 26 /// 8-byte unsigned value 27 /// 28 typedef unsigned long long UINT64 __attribute__ ((aligned (8))); 29 /// 30 /// 8-byte signed value 31 /// 32 typedef long long INT64 __attribute__ ((aligned (8))); 33 /// 34 /// 4-byte unsigned value 35 /// 36 typedef unsigned int UINT32 __attribute__ ((aligned (4))); 37 /// 38 /// 4-byte signed value 39 /// 40 typedef int INT32 __attribute__ ((aligned (4))); 41 /// 42 /// 2-byte unsigned value 43 /// 44 typedef unsigned short UINT16 __attribute__ ((aligned (2))); 45 /// 46 /// 2-byte Character. Unless otherwise specified all strings are stored in the 47 /// UTF-16 encoding format as defined by Unicode 2.1 and ISO/IEC 10646 standards. 48 /// 49 typedef unsigned short CHAR16 __attribute__ ((aligned (2))); 50 /// 51 /// 2-byte signed value 52 /// 53 typedef short INT16 __attribute__ ((aligned (2))); 54 /// 55 /// Logical Boolean. 1-byte value containing 0 for FALSE or a 1 for TRUE. Other 56 /// values are undefined. 57 /// 58 typedef unsigned char BOOLEAN; 59 /// 60 /// 1-byte unsigned value 61 /// 62 typedef unsigned char UINT8; 63 /// 64 /// 1-byte Character 65 /// 66 typedef char CHAR8; 67 /// 68 /// 1-byte signed value 69 /// 70 typedef signed char INT8; 71 /// 72 /// Unsigned value of native width. (4 bytes on supported 32-bit processor instructions, 73 /// 8 bytes on supported 64-bit processor instructions) 74 /// 75 typedef UINT64 UINTN __attribute__ ((aligned (8))); 76 /// 77 /// Signed value of native width. (4 bytes on supported 32-bit processor instructions, 78 /// 8 bytes on supported 64-bit processor instructions) 79 /// 80 typedef INT64 INTN __attribute__ ((aligned (8))); 81 82 // 83 // Processor specific defines 84 // 85 86 /// 87 /// A value of native width with the highest bit set. 88 /// 89 #define MAX_BIT 0x8000000000000000ULL 90 /// 91 /// A value of native width with the two highest bits set. 92 /// 93 #define MAX_2_BITS 0xC000000000000000ULL 94 95 /// 96 /// Maximum legal RV64 address 97 /// 98 #define MAX_ADDRESS 0xFFFFFFFFFFFFFFFFULL 99 100 /// 101 /// Maximum usable address at boot time (48 bits using 4 KB pages in Supervisor mode) 102 /// 103 #define MAX_ALLOC_ADDRESS 0xFFFFFFFFFFFFULL 104 105 /// 106 /// Maximum legal RISC-V INTN and UINTN values. 107 /// 108 #define MAX_INTN ((INTN)0x7FFFFFFFFFFFFFFFULL) 109 #define MAX_UINTN ((UINTN)0xFFFFFFFFFFFFFFFFULL) 110 111 /// 112 /// The stack alignment required for RISC-V 113 /// 114 #define CPU_STACK_ALIGNMENT 16 115 116 /// 117 /// Page allocation granularity for RISC-V 118 /// 119 #define DEFAULT_PAGE_ALLOCATION_GRANULARITY (0x1000) 120 #define RUNTIME_PAGE_ALLOCATION_GRANULARITY (0x1000) 121 122 // 123 // Modifier to ensure that all protocol member functions and EFI intrinsics 124 // use the correct C calling convention. All protocol member functions and 125 // EFI intrinsics are required to modify their member functions with EFIAPI. 126 // 127 #ifdef EFIAPI 128 /// 129 /// If EFIAPI is already defined, then we use that definition. 130 /// 131 #elif defined(__GNUC__) 132 /// 133 /// Define the standard calling convention regardless of optimization level 134 /// The GCC support assumes a GCC compiler that supports the EFI ABI. The EFI 135 /// ABI is much closer to the x64 Microsoft* ABI than standard x64 (x86-64) 136 /// GCC ABI. Thus a standard x64 (x86-64) GCC compiler can not be used for 137 /// x64. Warning the assembly code in the MDE x64 does not follow the correct 138 /// ABI for the standard x64 (x86-64) GCC. 139 /// 140 #define EFIAPI 141 #else 142 /// 143 /// The default for a non Microsoft* or GCC compiler is to assume the EFI ABI 144 /// is the standard. 145 /// 146 #define EFIAPI 147 #endif 148 149 #if defined(__GNUC__) 150 /// 151 /// For GNU assembly code, .global or .globl can declare global symbols. 152 /// Define this macro to unify the usage. 153 /// 154 #define ASM_GLOBAL .globl 155 #endif 156 157 /** 158 Return the pointer to the first instruction of a function given a function pointer. 159 On x64 CPU architectures, these two pointer values are the same, 160 so the implementation of this macro is very simple. 161 162 @param FunctionPointer A pointer to a function. 163 164 @return The pointer to the first instruction of a function given a function pointer. 165 166 **/ 167 #define FUNCTION_ENTRY_POINT(FunctionPointer) (VOID *)(UINTN)(FunctionPointer) 168 169 #ifndef __USER_LABEL_PREFIX__ 170 #define __USER_LABEL_PREFIX__ 171 #endif 172 173 #endif 174