1 /* 2 * PowerPC interal definitions for qemu. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef PPC_INTERNAL_H 19 #define PPC_INTERNAL_H 20 21 #define FUNC_MASK(name, ret_type, size, max_val) \ 22 static inline ret_type name(uint##size##_t start, \ 23 uint##size##_t end) \ 24 { \ 25 ret_type ret, max_bit = size - 1; \ 26 \ 27 if (likely(start == 0)) { \ 28 ret = max_val << (max_bit - end); \ 29 } else if (likely(end == max_bit)) { \ 30 ret = max_val >> start; \ 31 } else { \ 32 ret = (((uint##size##_t)(-1ULL)) >> (start)) ^ \ 33 (((uint##size##_t)(-1ULL) >> (end)) >> 1); \ 34 if (unlikely(start > end)) { \ 35 return ~ret; \ 36 } \ 37 } \ 38 \ 39 return ret; \ 40 } 41 42 #if defined(TARGET_PPC64) 43 FUNC_MASK(MASK, target_ulong, 64, UINT64_MAX); 44 #else 45 FUNC_MASK(MASK, target_ulong, 32, UINT32_MAX); 46 #endif 47 FUNC_MASK(mask_u32, uint32_t, 32, UINT32_MAX); 48 FUNC_MASK(mask_u64, uint64_t, 64, UINT64_MAX); 49 50 #endif /* PPC_INTERNAL_H */ 51