projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| dcdaadb6 LV |
1 | /* |
| 2 | * Helper functions for guest memory tracing | |
| 3 | * | |
| 4 | * Copyright (C) 2016 Lluís Vilanova <vilanova@ac.upc.edu> | |
| 5 | * | |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
| 7 | * See the COPYING file in the top-level directory. | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef TRACE__MEM_H | |
| 11 | #define TRACE__MEM_H | |
| 12 | ||
| 13 | #include "tcg/tcg.h" | |
| 14 | ||
| 785ea711 RH |
15 | #define TRACE_MEM_SZ_SHIFT_MASK 0xf /* size shift mask */ |
| 16 | #define TRACE_MEM_SE (1ULL << 4) /* sign extended (y/n) */ | |
| 17 | #define TRACE_MEM_BE (1ULL << 5) /* big endian (y/n) */ | |
| 18 | #define TRACE_MEM_ST (1ULL << 6) /* store (y/n) */ | |
| 19 | #define TRACE_MEM_MMU_SHIFT 8 /* mmu idx */ | |
| dcdaadb6 LV |
20 | |
| 21 | /** | |
| 785ea711 | 22 | * trace_mem_build_info: |
| dcdaadb6 LV |
23 | * |
| 24 | * Return a value for the 'info' argument in guest memory access traces. | |
| 25 | */ | |
| 785ea711 RH |
26 | static inline uint16_t trace_mem_build_info(int size_shift, bool sign_extend, |
| 27 | MemOp endianness, bool store, | |
| 28 | unsigned int mmu_idx) | |
| 29 | { | |
| 30 | uint16_t res; | |
| 31 | ||
| 32 | res = size_shift & TRACE_MEM_SZ_SHIFT_MASK; | |
| 33 | if (sign_extend) { | |
| 34 | res |= TRACE_MEM_SE; | |
| 35 | } | |
| 36 | if (endianness == MO_BE) { | |
| 37 | res |= TRACE_MEM_BE; | |
| 38 | } | |
| 39 | if (store) { | |
| 40 | res |= TRACE_MEM_ST; | |
| 41 | } | |
| 42 | #ifdef CONFIG_SOFTMMU | |
| 43 | res |= mmu_idx << TRACE_MEM_MMU_SHIFT; | |
| 44 | #endif | |
| 45 | return res; | |
| 46 | } | |
| 47 | ||
| dcdaadb6 LV |
48 | |
| 49 | /** | |
| 785ea711 | 50 | * trace_mem_get_info: |
| dcdaadb6 LV |
51 | * |
| 52 | * Return a value for the 'info' argument in guest memory access traces. | |
| 53 | */ | |
| 785ea711 RH |
54 | static inline uint16_t trace_mem_get_info(MemOp op, |
| 55 | unsigned int mmu_idx, | |
| 56 | bool store) | |
| 57 | { | |
| 58 | return trace_mem_build_info(op & MO_SIZE, !!(op & MO_SIGN), | |
| 59 | op & MO_BSWAP, store, | |
| 60 | mmu_idx); | |
| 61 | } | |
| dcdaadb6 | 62 | |
| 175de524 | 63 | #endif /* TRACE__MEM_H */ |