| 1 | /* |
| 2 | * Combine the MemOp and mmu_idx parameters into a single value. |
| 3 | * |
| 4 | * Authors: |
| 5 | * Richard Henderson <rth@twiddle.net> |
| 6 | * |
| 7 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 8 | * See the COPYING file in the top-level directory. |
| 9 | */ |
| 10 | |
| 11 | #ifndef EXEC_MEMOPIDX_H |
| 12 | #define EXEC_MEMOPIDX_H |
| 13 | |
| 14 | #include "exec/memop.h" |
| 15 | |
| 16 | typedef uint32_t MemOpIdx; |
| 17 | |
| 18 | /** |
| 19 | * make_memop_idx |
| 20 | * @op: memory operation |
| 21 | * @idx: mmu index |
| 22 | * |
| 23 | * Encode these values into a single parameter. |
| 24 | */ |
| 25 | static inline MemOpIdx make_memop_idx(MemOp op, unsigned idx) |
| 26 | { |
| 27 | #ifdef CONFIG_DEBUG_TCG |
| 28 | assert(idx <= 31); |
| 29 | assert(clz32(op) >= 5); |
| 30 | #endif |
| 31 | return (op << 5) | idx; |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * get_memop |
| 36 | * @oi: combined op/idx parameter |
| 37 | * |
| 38 | * Extract the memory operation from the combined value. |
| 39 | */ |
| 40 | static inline MemOp get_memop(MemOpIdx oi) |
| 41 | { |
| 42 | return oi >> 5; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * get_mmuidx |
| 47 | * @oi: combined op/idx parameter |
| 48 | * |
| 49 | * Extract the mmu index from the combined value. |
| 50 | */ |
| 51 | static inline unsigned get_mmuidx(MemOpIdx oi) |
| 52 | { |
| 53 | return oi & 31; |
| 54 | } |
| 55 | |
| 56 | #endif |