xref: /openbmc/qemu/include/exec/memopidx.h (revision 4f31b54b)
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  */
make_memop_idx(MemOp op,unsigned idx)25 static inline MemOpIdx make_memop_idx(MemOp op, unsigned idx)
26 {
27 #ifdef CONFIG_DEBUG_TCG
28     assert(idx <= 15);
29 #endif
30     return (op << 4) | idx;
31 }
32 
33 /**
34  * get_memop
35  * @oi: combined op/idx parameter
36  *
37  * Extract the memory operation from the combined value.
38  */
get_memop(MemOpIdx oi)39 static inline MemOp get_memop(MemOpIdx oi)
40 {
41     return oi >> 4;
42 }
43 
44 /**
45  * get_mmuidx
46  * @oi: combined op/idx parameter
47  *
48  * Extract the mmu index from the combined value.
49  */
get_mmuidx(MemOpIdx oi)50 static inline unsigned get_mmuidx(MemOpIdx oi)
51 {
52     return oi & 15;
53 }
54 
55 #endif
56