~mdw / secnet / blame
| Commit | Line | Data |
|---|---|---|
| 0bcb8184 MW |
1 | /* |
| 2 | * This file is part of secnet. | |
| 3 | * See README for full list of copyright holders. | |
| 4 | * | |
| 5 | * secnet is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation; either version d of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * secnet is distributed in the hope that it will be useful, but | |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * version 3 along with secnet; if not, see | |
| 17 | * https://www.gnu.org/licenses/gpl.html. | |
| 18 | */ | |
| 19 | ||
| 20 | #ifndef fake_mLib_bits_h | |
| 21 | #define fake_mLib_bits_h | |
| 22 | ||
| 23 | /* The <mLib/bits.h> header defines a large number of types and macros for | |
| 24 | * various kinds of bithacking. Notably, it has machinery for autodetecting | |
| 25 | * suitable types holding (at least) various numbers of bits -- a service | |
| 26 | * which C99 provides through other means. | |
| 27 | * | |
| 28 | * This file provides a small portion of the <mLib/bits.h> interface, just | |
| 29 | * enough to make the pieces of code lifted from Catacomb feel at home. | |
| 30 | */ | |
| 31 | ||
| 32 | #include <stdint.h> | |
| ca028fbe | 33 | #include "u64.h" |
| 0bcb8184 MW |
34 | #include "unaligned.h" |
| 35 | ||
| 36 | typedef uint8_t octet; | |
| b0c1f00c MW |
37 | typedef uint32_t uint32; |
| 38 | typedef uint64_t uint64; | |
| 39 | ||
| 40 | typedef int32_t int32; | |
| 41 | typedef int64_t int64; | |
| 0bcb8184 MW |
42 | |
| 43 | #define LOAD32_L(p) (get_uint32_le(p)) | |
| ca028fbe | 44 | #define LOAD32_B(p) (get_uint32(p)) |
| 0bcb8184 | 45 | #define STORE32_L(p, x) put_uint32_le((p), (x)) |
| ca028fbe MW |
46 | #define STORE32_B(p, x) put_uint32((p), (x)) |
| 47 | #define ROL32(x, n) ((n) ? ((x) << (n) | (x) >> (32 - (n))) : (x)) | |
| 0bcb8184 | 48 | |
| ca028fbe MW |
49 | #define MASK32 0xffffffffu |
| 50 | #define U32(x) ((uint32)(x) & MASK32) | |
| 51 | ||
| 52 | typedef u64 kludge64; | |
| 53 | #define X64(hi, lo) u64init(0x##hi, 0x##lo) | |
| 54 | #define HI64(x) u64gethi(x) | |
| 55 | #define LO64(x) u64getlo(x) | |
| 56 | #define LOAD64_L_(x, p) do { \ | |
| 57 | const uint8_t *p_ = (const uint8_t *)(p); \ | |
| 58 | uint32_t lo_ = LOAD32_L(p_ + 0), hi_ = LOAD32_L(p_ + 4); \ | |
| 59 | (x) = u64hilo(hi_, lo_); \ | |
| 60 | } while (0) | |
| 61 | #define LOAD64_B_(x, p) do { \ | |
| 62 | const uint8_t *p_ = (const uint8_t *)(p); \ | |
| 63 | uint32_t hi_ = LOAD32_B(p_ + 0), lo_ = LOAD32_B(p_ + 4); \ | |
| 64 | (x) = u64hilo(hi_, lo_); \ | |
| 65 | } while (0) | |
| 66 | #define STORE64_L_(p, x) do { \ | |
| 67 | uint8_t *p_ = (uint8_t *)(p); \ | |
| 68 | uint32_t lo_ = LO64(x), hi_ = HI64(x); \ | |
| 69 | STORE32_L(p_ + 0, lo_); STORE32_L(p_ + 4, hi_); \ | |
| 70 | } while (0) | |
| 71 | #define STORE64_B_(p, x) do { \ | |
| 72 | uint8_t *p_ = (uint8_t *)(p); \ | |
| 73 | uint32_t lo_ = LO64(x), hi_ = HI64(x); \ | |
| 74 | STORE32_B(p_ + 0, hi_); STORE32_B(p_ + 4, lo_); \ | |
| 75 | } while (0) | |
| 76 | #define SET64(z, hi, lo) ((z) = u64hilo((hi), (lo))) | |
| 77 | #define AND64(z, x, y) ((z) = u64and((x), (y))) | |
| 78 | #define OR64(z, x, y) ((z) = u64or((x), (y))) | |
| 79 | #define XOR64(z, x, y) ((z) = u64xor((x), (y))) | |
| 80 | #define CPL64(z, x) ((z) = u64not((x))) | |
| 81 | #define ROL64_(z, x, n) ((n) ? (z) = u64rol((x), (n)) : (x)) | |
| 0bcb8184 | 82 | |
| 0bcb8184 | 83 | #endif /* fake_mLib_bits_h */ |