| Ronak Kanabar | 1ae366f | 2023-06-07 01:21:56 +0530 | [diff] [blame^] | 1 | /** @file |
| 2 | Processor or Compiler specific defines and types for LoongArch |
| 3 | |
| 4 | Copyright (c) 2022, Loongson Technology Corporation Limited. 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_LOONGARCH64 |
| 17 | |
| 18 | #define EFIAPI |
| 19 | |
| 20 | // |
| 21 | // Make sure we are using the correct packing rules per EFI specification |
| 22 | // |
| 23 | #ifndef __GNUC__ |
| 24 | #pragma pack() |
| 25 | #endif |
| 26 | |
| 27 | // |
| 28 | // Assume standard LoongArch 64-bit alignment. |
| 29 | // Need to check portability of long long |
| 30 | // |
| 31 | typedef unsigned long long UINT64; |
| 32 | typedef long long INT64; |
| 33 | typedef unsigned int UINT32; |
| 34 | typedef int INT32; |
| 35 | typedef unsigned short UINT16; |
| 36 | typedef unsigned short CHAR16; |
| 37 | typedef short INT16; |
| 38 | typedef unsigned char BOOLEAN; |
| 39 | typedef unsigned char UINT8; |
| 40 | typedef char CHAR8; |
| 41 | typedef char INT8; |
| 42 | |
| 43 | // |
| 44 | // Unsigned value of native width. (4 bytes on supported 32-bit processor instructions, |
| 45 | // 8 bytes on supported 64-bit processor instructions) |
| 46 | // |
| 47 | |
| 48 | typedef UINT64 UINTN; |
| 49 | |
| 50 | // |
| 51 | // Signed value of native width. (4 bytes on supported 32-bit processor instructions, |
| 52 | // 8 bytes on supported 64-bit processor instructions) |
| 53 | // |
| 54 | typedef INT64 INTN; |
| 55 | |
| 56 | // |
| 57 | // Processor specific defines |
| 58 | // |
| 59 | |
| 60 | // |
| 61 | // A value of native width with the highest bit set. |
| 62 | // |
| 63 | #define MAX_BIT 0x8000000000000000ULL |
| 64 | // |
| 65 | // A value of native width with the two highest bits set. |
| 66 | // |
| 67 | #define MAX_2_BITS 0xC000000000000000ULL |
| 68 | |
| 69 | // |
| 70 | // Maximum legal LoongArch 64-bit address |
| 71 | // |
| 72 | #define MAX_ADDRESS 0xFFFFFFFFFFFFFFFFULL |
| 73 | |
| 74 | // |
| 75 | // Maximum usable address at boot time (48 bits using 4KB pages) |
| 76 | // |
| 77 | #define MAX_ALLOC_ADDRESS 0xFFFFFFFFFFFFULL |
| 78 | |
| 79 | // |
| 80 | // Maximum legal LoongArch 64-bit INTN and UINTN values. |
| 81 | // |
| 82 | #define MAX_INTN ((INTN)0x7FFFFFFFFFFFFFFFULL) |
| 83 | #define MAX_UINTN ((UINTN)0xFFFFFFFFFFFFFFFFULL) |
| 84 | |
| 85 | // |
| 86 | // Page allocation granularity for LoongArch |
| 87 | // |
| 88 | #define DEFAULT_PAGE_ALLOCATION_GRANULARITY (0x1000) |
| 89 | #define RUNTIME_PAGE_ALLOCATION_GRANULARITY (0x10000) |
| 90 | |
| 91 | #if defined (__GNUC__) |
| 92 | // |
| 93 | // For GNU assembly code, .global or .globl can declare global symbols. |
| 94 | // Define this macro to unify the usage. |
| 95 | // |
| 96 | #define ASM_GLOBAL .globl |
| 97 | #endif |
| 98 | |
| 99 | // |
| 100 | // The stack alignment required for LoongArch |
| 101 | // |
| 102 | #define CPU_STACK_ALIGNMENT 16 |
| 103 | |
| 104 | /** |
| 105 | Return the pointer to the first instruction of a function given a function pointer. |
| 106 | On LOONGARCH CPU architectures, these two pointer values are the same, |
| 107 | so the implementation of this macro is very simple. |
| 108 | |
| 109 | @param FunctionPointer A pointer to a function. |
| 110 | |
| 111 | @return The pointer to the first instruction of a function given a function pointer. |
| 112 | |
| 113 | **/ |
| 114 | #define FUNCTION_ENTRY_POINT(FunctionPointer) (VOID *)(UINTN)(FunctionPointer) |
| 115 | |
| 116 | #ifndef __USER_LABEL_PREFIX__ |
| 117 | #define __USER_LABEL_PREFIX__ |
| 118 | #endif |
| 119 | |
| 120 | #endif |