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b92e5a22 FB |
1 | /* |
2 | * Software MMU support | |
3 | * | |
4 | * Copyright (c) 2003 Fabrice Bellard | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | #if DATA_SIZE == 8 | |
21 | #define SUFFIX q | |
61382a50 | 22 | #define USUFFIX q |
b92e5a22 FB |
23 | #define DATA_TYPE uint64_t |
24 | #elif DATA_SIZE == 4 | |
25 | #define SUFFIX l | |
61382a50 | 26 | #define USUFFIX l |
b92e5a22 FB |
27 | #define DATA_TYPE uint32_t |
28 | #elif DATA_SIZE == 2 | |
29 | #define SUFFIX w | |
61382a50 | 30 | #define USUFFIX uw |
b92e5a22 FB |
31 | #define DATA_TYPE uint16_t |
32 | #define DATA_STYPE int16_t | |
33 | #elif DATA_SIZE == 1 | |
34 | #define SUFFIX b | |
61382a50 | 35 | #define USUFFIX ub |
b92e5a22 FB |
36 | #define DATA_TYPE uint8_t |
37 | #define DATA_STYPE int8_t | |
38 | #else | |
39 | #error unsupported data size | |
40 | #endif | |
41 | ||
61382a50 FB |
42 | #if ACCESS_TYPE == 0 |
43 | ||
44 | #define CPU_MEM_INDEX 0 | |
45 | #define MMUSUFFIX _mmu | |
46 | ||
47 | #elif ACCESS_TYPE == 1 | |
48 | ||
49 | #define CPU_MEM_INDEX 1 | |
50 | #define MMUSUFFIX _mmu | |
51 | ||
52 | #elif ACCESS_TYPE == 2 | |
53 | ||
54 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3) | |
55 | #define MMUSUFFIX _mmu | |
56 | ||
57 | #elif ACCESS_TYPE == 3 | |
58 | ||
59 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3) | |
60 | #define MMUSUFFIX _cmmu | |
61 | ||
b92e5a22 | 62 | #else |
61382a50 | 63 | #error invalid ACCESS_TYPE |
b92e5a22 FB |
64 | #endif |
65 | ||
66 | #if DATA_SIZE == 8 | |
67 | #define RES_TYPE uint64_t | |
68 | #else | |
69 | #define RES_TYPE int | |
70 | #endif | |
71 | ||
72 | ||
61382a50 FB |
73 | DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(unsigned long addr, |
74 | int is_user); | |
75 | void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(unsigned long addr, DATA_TYPE v, int is_user); | |
b92e5a22 | 76 | |
8948b5d6 | 77 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(void *ptr) |
b92e5a22 FB |
78 | { |
79 | int index; | |
80 | RES_TYPE res; | |
81 | unsigned long addr, physaddr; | |
61382a50 FB |
82 | int is_user; |
83 | ||
b92e5a22 FB |
84 | addr = (unsigned long)ptr; |
85 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
61382a50 FB |
86 | is_user = CPU_MEM_INDEX; |
87 | if (__builtin_expect(env->tlb_read[is_user][index].address != | |
b92e5a22 | 88 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
61382a50 | 89 | res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user); |
b92e5a22 | 90 | } else { |
61382a50 FB |
91 | physaddr = addr + env->tlb_read[is_user][index].addend; |
92 | res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr); | |
b92e5a22 FB |
93 | } |
94 | return res; | |
95 | } | |
96 | ||
97 | #if DATA_SIZE <= 2 | |
98 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(void *ptr) | |
99 | { | |
100 | int res, index; | |
101 | unsigned long addr, physaddr; | |
61382a50 FB |
102 | int is_user; |
103 | ||
b92e5a22 FB |
104 | addr = (unsigned long)ptr; |
105 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
61382a50 FB |
106 | is_user = CPU_MEM_INDEX; |
107 | if (__builtin_expect(env->tlb_read[is_user][index].address != | |
b92e5a22 | 108 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
61382a50 | 109 | res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user); |
b92e5a22 | 110 | } else { |
61382a50 | 111 | physaddr = addr + env->tlb_read[is_user][index].addend; |
b92e5a22 FB |
112 | res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr); |
113 | } | |
114 | return res; | |
115 | } | |
116 | #endif | |
117 | ||
118 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v) | |
119 | { | |
120 | int index; | |
121 | unsigned long addr, physaddr; | |
61382a50 FB |
122 | int is_user; |
123 | ||
b92e5a22 FB |
124 | addr = (unsigned long)ptr; |
125 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
61382a50 FB |
126 | is_user = CPU_MEM_INDEX; |
127 | if (__builtin_expect(env->tlb_write[is_user][index].address != | |
b92e5a22 | 128 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
61382a50 | 129 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user); |
b92e5a22 | 130 | } else { |
61382a50 | 131 | physaddr = addr + env->tlb_write[is_user][index].addend; |
b92e5a22 FB |
132 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v); |
133 | } | |
134 | } | |
135 | ||
136 | #undef RES_TYPE | |
137 | #undef DATA_TYPE | |
138 | #undef DATA_STYPE | |
139 | #undef SUFFIX | |
61382a50 | 140 | #undef USUFFIX |
b92e5a22 | 141 | #undef DATA_SIZE |
61382a50 FB |
142 | #undef CPU_MEM_INDEX |
143 | #undef MMUSUFFIX |