root / target-sparc / helper.c @ d3c61721
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1 | e8af50a3 | bellard | /*
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2 | e8af50a3 | bellard | * sparc helpers
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3 | e8af50a3 | bellard | *
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4 | e8af50a3 | bellard | * Copyright (c) 2003 Fabrice Bellard
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5 | e8af50a3 | bellard | *
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6 | e8af50a3 | bellard | * This library is free software; you can redistribute it and/or
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7 | e8af50a3 | bellard | * modify it under the terms of the GNU Lesser General Public
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8 | e8af50a3 | bellard | * License as published by the Free Software Foundation; either
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9 | e8af50a3 | bellard | * version 2 of the License, or (at your option) any later version.
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10 | e8af50a3 | bellard | *
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11 | e8af50a3 | bellard | * This library is distributed in the hope that it will be useful,
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12 | e8af50a3 | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | e8af50a3 | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | e8af50a3 | bellard | * Lesser General Public License for more details.
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15 | e8af50a3 | bellard | *
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16 | e8af50a3 | bellard | * You should have received a copy of the GNU Lesser General Public
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17 | e8af50a3 | bellard | * License along with this library; if not, write to the Free Software
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18 | e8af50a3 | bellard | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | e8af50a3 | bellard | */
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20 | e8af50a3 | bellard | #include "exec.h" |
21 | e8af50a3 | bellard | |
22 | e80cfcfc | bellard | //#define DEBUG_PCALL
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23 | e80cfcfc | bellard | //#define DEBUG_MMU
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24 | e8af50a3 | bellard | |
25 | e8af50a3 | bellard | /* Sparc MMU emulation */
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26 | e8af50a3 | bellard | int cpu_sparc_handle_mmu_fault (CPUState *env, uint32_t address, int rw, |
27 | e8af50a3 | bellard | int is_user, int is_softmmu); |
28 | e8af50a3 | bellard | |
29 | e8af50a3 | bellard | /* thread support */
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30 | e8af50a3 | bellard | |
31 | e8af50a3 | bellard | spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED; |
32 | e8af50a3 | bellard | |
33 | e8af50a3 | bellard | void cpu_lock(void) |
34 | e8af50a3 | bellard | { |
35 | e8af50a3 | bellard | spin_lock(&global_cpu_lock); |
36 | e8af50a3 | bellard | } |
37 | e8af50a3 | bellard | |
38 | e8af50a3 | bellard | void cpu_unlock(void) |
39 | e8af50a3 | bellard | { |
40 | e8af50a3 | bellard | spin_unlock(&global_cpu_lock); |
41 | e8af50a3 | bellard | } |
42 | e8af50a3 | bellard | |
43 | e8af50a3 | bellard | #if !defined(CONFIG_USER_ONLY)
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44 | e8af50a3 | bellard | |
45 | e8af50a3 | bellard | #define MMUSUFFIX _mmu
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46 | e8af50a3 | bellard | #define GETPC() (__builtin_return_address(0)) |
47 | e8af50a3 | bellard | |
48 | e8af50a3 | bellard | #define SHIFT 0 |
49 | e8af50a3 | bellard | #include "softmmu_template.h" |
50 | e8af50a3 | bellard | |
51 | e8af50a3 | bellard | #define SHIFT 1 |
52 | e8af50a3 | bellard | #include "softmmu_template.h" |
53 | e8af50a3 | bellard | |
54 | e8af50a3 | bellard | #define SHIFT 2 |
55 | e8af50a3 | bellard | #include "softmmu_template.h" |
56 | e8af50a3 | bellard | |
57 | e8af50a3 | bellard | #define SHIFT 3 |
58 | e8af50a3 | bellard | #include "softmmu_template.h" |
59 | e8af50a3 | bellard | |
60 | e8af50a3 | bellard | |
61 | e8af50a3 | bellard | /* try to fill the TLB and return an exception if error. If retaddr is
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62 | e8af50a3 | bellard | NULL, it means that the function was called in C code (i.e. not
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63 | e8af50a3 | bellard | from generated code or from helper.c) */
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64 | e8af50a3 | bellard | /* XXX: fix it to restore all registers */
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65 | 0fa85d43 | bellard | void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr) |
66 | e8af50a3 | bellard | { |
67 | e8af50a3 | bellard | TranslationBlock *tb; |
68 | e8af50a3 | bellard | int ret;
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69 | e8af50a3 | bellard | unsigned long pc; |
70 | e8af50a3 | bellard | CPUState *saved_env; |
71 | e8af50a3 | bellard | |
72 | e8af50a3 | bellard | /* XXX: hack to restore env in all cases, even if not called from
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73 | e8af50a3 | bellard | generated code */
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74 | e8af50a3 | bellard | saved_env = env; |
75 | e8af50a3 | bellard | env = cpu_single_env; |
76 | e8af50a3 | bellard | |
77 | e8af50a3 | bellard | ret = cpu_sparc_handle_mmu_fault(env, addr, is_write, is_user, 1);
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78 | e8af50a3 | bellard | if (ret) {
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79 | e8af50a3 | bellard | if (retaddr) {
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80 | e8af50a3 | bellard | /* now we have a real cpu fault */
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81 | e8af50a3 | bellard | pc = (unsigned long)retaddr; |
82 | e8af50a3 | bellard | tb = tb_find_pc(pc); |
83 | e8af50a3 | bellard | if (tb) {
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84 | e8af50a3 | bellard | /* the PC is inside the translated code. It means that we have
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85 | e8af50a3 | bellard | a virtual CPU fault */
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86 | e8af50a3 | bellard | cpu_restore_state(tb, env, pc, NULL);
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87 | e8af50a3 | bellard | } |
88 | e8af50a3 | bellard | } |
89 | e8af50a3 | bellard | raise_exception_err(ret, env->error_code); |
90 | e8af50a3 | bellard | } |
91 | e8af50a3 | bellard | env = saved_env; |
92 | e8af50a3 | bellard | } |
93 | e8af50a3 | bellard | #endif
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94 | e8af50a3 | bellard | |
95 | e8af50a3 | bellard | static const int access_table[8][8] = { |
96 | e8af50a3 | bellard | { 0, 0, 0, 0, 2, 0, 3, 3 }, |
97 | e8af50a3 | bellard | { 0, 0, 0, 0, 2, 0, 0, 0 }, |
98 | e8af50a3 | bellard | { 2, 2, 0, 0, 0, 2, 3, 3 }, |
99 | e8af50a3 | bellard | { 2, 2, 0, 0, 0, 2, 0, 0 }, |
100 | e8af50a3 | bellard | { 2, 0, 2, 0, 2, 2, 3, 3 }, |
101 | e8af50a3 | bellard | { 2, 0, 2, 0, 2, 0, 2, 0 }, |
102 | e8af50a3 | bellard | { 2, 2, 2, 0, 2, 2, 3, 3 }, |
103 | e8af50a3 | bellard | { 2, 2, 2, 0, 2, 2, 2, 0 } |
104 | e8af50a3 | bellard | }; |
105 | e8af50a3 | bellard | |
106 | e8af50a3 | bellard | /* 1 = write OK */
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107 | e8af50a3 | bellard | static const int rw_table[2][8] = { |
108 | e8af50a3 | bellard | { 0, 1, 0, 1, 0, 1, 0, 1 }, |
109 | e8af50a3 | bellard | { 0, 1, 0, 1, 0, 0, 0, 0 } |
110 | e8af50a3 | bellard | }; |
111 | e8af50a3 | bellard | |
112 | e80cfcfc | bellard | int get_physical_address (CPUState *env, uint32_t *physical, int *prot, |
113 | e80cfcfc | bellard | int *access_index, uint32_t address, int rw, |
114 | e80cfcfc | bellard | int is_user)
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115 | e8af50a3 | bellard | { |
116 | e80cfcfc | bellard | int access_perms = 0; |
117 | e80cfcfc | bellard | target_phys_addr_t pde_ptr; |
118 | e8af50a3 | bellard | uint32_t pde, virt_addr; |
119 | e80cfcfc | bellard | int error_code = 0, is_dirty; |
120 | e80cfcfc | bellard | unsigned long page_offset; |
121 | e8af50a3 | bellard | |
122 | e8af50a3 | bellard | virt_addr = address & TARGET_PAGE_MASK; |
123 | e8af50a3 | bellard | if ((env->mmuregs[0] & MMU_E) == 0) { /* MMU disabled */ |
124 | e80cfcfc | bellard | *physical = address; |
125 | e80cfcfc | bellard | *prot = PAGE_READ | PAGE_WRITE; |
126 | e80cfcfc | bellard | return 0; |
127 | e8af50a3 | bellard | } |
128 | e8af50a3 | bellard | |
129 | e8af50a3 | bellard | /* SPARC reference MMU table walk: Context table->L1->L2->PTE */
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130 | e8af50a3 | bellard | /* Context base + context number */
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131 | e80cfcfc | bellard | pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 4); |
132 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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133 | e80cfcfc | bellard | bswap32s(&pde); |
134 | e8af50a3 | bellard | |
135 | e8af50a3 | bellard | /* Ctx pde */
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136 | e8af50a3 | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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137 | e80cfcfc | bellard | default:
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138 | e8af50a3 | bellard | case 0: /* Invalid */ |
139 | e80cfcfc | bellard | return 1; |
140 | e80cfcfc | bellard | case 2: /* L0 PTE, maybe should not happen? */ |
141 | e8af50a3 | bellard | case 3: /* Reserved */ |
142 | e80cfcfc | bellard | return 4; |
143 | e80cfcfc | bellard | case 1: /* L0 PDE */ |
144 | e80cfcfc | bellard | pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4); |
145 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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146 | e80cfcfc | bellard | bswap32s(&pde); |
147 | e8af50a3 | bellard | |
148 | e8af50a3 | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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149 | e80cfcfc | bellard | default:
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150 | e8af50a3 | bellard | case 0: /* Invalid */ |
151 | e80cfcfc | bellard | return 1; |
152 | e8af50a3 | bellard | case 3: /* Reserved */ |
153 | e80cfcfc | bellard | return 4; |
154 | e80cfcfc | bellard | case 1: /* L1 PDE */ |
155 | e80cfcfc | bellard | pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4); |
156 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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157 | e80cfcfc | bellard | bswap32s(&pde); |
158 | e8af50a3 | bellard | |
159 | e8af50a3 | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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160 | e80cfcfc | bellard | default:
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161 | e8af50a3 | bellard | case 0: /* Invalid */ |
162 | e80cfcfc | bellard | return 1; |
163 | e8af50a3 | bellard | case 3: /* Reserved */ |
164 | e80cfcfc | bellard | return 4; |
165 | e80cfcfc | bellard | case 1: /* L2 PDE */ |
166 | e80cfcfc | bellard | pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4); |
167 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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168 | e80cfcfc | bellard | bswap32s(&pde); |
169 | e8af50a3 | bellard | |
170 | e8af50a3 | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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171 | e80cfcfc | bellard | default:
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172 | e8af50a3 | bellard | case 0: /* Invalid */ |
173 | e80cfcfc | bellard | return 1; |
174 | e8af50a3 | bellard | case 1: /* PDE, should not happen */ |
175 | e8af50a3 | bellard | case 3: /* Reserved */ |
176 | e80cfcfc | bellard | return 4; |
177 | e8af50a3 | bellard | case 2: /* L3 PTE */ |
178 | e8af50a3 | bellard | virt_addr = address & TARGET_PAGE_MASK; |
179 | e8af50a3 | bellard | page_offset = (address & TARGET_PAGE_MASK) & (TARGET_PAGE_SIZE - 1);
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180 | e8af50a3 | bellard | } |
181 | e8af50a3 | bellard | break;
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182 | e8af50a3 | bellard | case 2: /* L2 PTE */ |
183 | e8af50a3 | bellard | virt_addr = address & ~0x3ffff;
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184 | e8af50a3 | bellard | page_offset = address & 0x3ffff;
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185 | e8af50a3 | bellard | } |
186 | e8af50a3 | bellard | break;
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187 | e8af50a3 | bellard | case 2: /* L1 PTE */ |
188 | e8af50a3 | bellard | virt_addr = address & ~0xffffff;
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189 | e8af50a3 | bellard | page_offset = address & 0xffffff;
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190 | e8af50a3 | bellard | } |
191 | e8af50a3 | bellard | } |
192 | e8af50a3 | bellard | |
193 | e8af50a3 | bellard | /* update page modified and dirty bits */
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194 | b769d8fe | bellard | is_dirty = (rw & 1) && !(pde & PG_MODIFIED_MASK);
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195 | e8af50a3 | bellard | if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
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196 | e80cfcfc | bellard | uint32_t tmppde; |
197 | e8af50a3 | bellard | pde |= PG_ACCESSED_MASK; |
198 | e8af50a3 | bellard | if (is_dirty)
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199 | e8af50a3 | bellard | pde |= PG_MODIFIED_MASK; |
200 | e80cfcfc | bellard | tmppde = bswap32(pde); |
201 | e80cfcfc | bellard | cpu_physical_memory_write(pde_ptr, (uint8_t *)&tmppde, 4);
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202 | e8af50a3 | bellard | } |
203 | e8af50a3 | bellard | /* check access */
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204 | e80cfcfc | bellard | *access_index = ((rw & 1) << 2) | (rw & 2) | (is_user? 0 : 1); |
205 | e8af50a3 | bellard | access_perms = (pde & PTE_ACCESS_MASK) >> PTE_ACCESS_SHIFT; |
206 | e80cfcfc | bellard | error_code = access_table[*access_index][access_perms]; |
207 | e8af50a3 | bellard | if (error_code)
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208 | e80cfcfc | bellard | return error_code;
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209 | e8af50a3 | bellard | |
210 | e8af50a3 | bellard | /* the page can be put in the TLB */
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211 | e80cfcfc | bellard | *prot = PAGE_READ; |
212 | e8af50a3 | bellard | if (pde & PG_MODIFIED_MASK) {
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213 | e8af50a3 | bellard | /* only set write access if already dirty... otherwise wait
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214 | e8af50a3 | bellard | for dirty access */
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215 | e8af50a3 | bellard | if (rw_table[is_user][access_perms])
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216 | e80cfcfc | bellard | *prot |= PAGE_WRITE; |
217 | e8af50a3 | bellard | } |
218 | e8af50a3 | bellard | |
219 | e8af50a3 | bellard | /* Even if large ptes, we map only one 4KB page in the cache to
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220 | e8af50a3 | bellard | avoid filling it too fast */
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221 | e80cfcfc | bellard | *physical = ((pde & PTE_ADDR_MASK) << 4) + page_offset;
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222 | e80cfcfc | bellard | return 0; |
223 | e80cfcfc | bellard | } |
224 | e80cfcfc | bellard | |
225 | e80cfcfc | bellard | /* Perform address translation */
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226 | e80cfcfc | bellard | int cpu_sparc_handle_mmu_fault (CPUState *env, uint32_t address, int rw, |
227 | e80cfcfc | bellard | int is_user, int is_softmmu) |
228 | e80cfcfc | bellard | { |
229 | e80cfcfc | bellard | int exception = 0; |
230 | e80cfcfc | bellard | uint32_t virt_addr, paddr; |
231 | e80cfcfc | bellard | unsigned long vaddr; |
232 | e80cfcfc | bellard | int error_code = 0, prot, ret = 0, access_index; |
233 | e8af50a3 | bellard | |
234 | e80cfcfc | bellard | if (env->user_mode_only) {
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235 | e80cfcfc | bellard | /* user mode only emulation */
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236 | e80cfcfc | bellard | error_code = -2;
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237 | e80cfcfc | bellard | goto do_fault_user;
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238 | e80cfcfc | bellard | } |
239 | e8af50a3 | bellard | |
240 | e80cfcfc | bellard | error_code = get_physical_address(env, &paddr, &prot, &access_index, address, rw, is_user); |
241 | e80cfcfc | bellard | if (error_code == 0) { |
242 | e80cfcfc | bellard | virt_addr = address & TARGET_PAGE_MASK; |
243 | e80cfcfc | bellard | vaddr = virt_addr + ((address & TARGET_PAGE_MASK) & (TARGET_PAGE_SIZE - 1));
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244 | e80cfcfc | bellard | ret = tlb_set_page(env, vaddr, paddr, prot, is_user, is_softmmu); |
245 | e80cfcfc | bellard | return ret;
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246 | e80cfcfc | bellard | } |
247 | e8af50a3 | bellard | |
248 | e8af50a3 | bellard | if (env->mmuregs[3]) /* Fault status register */ |
249 | e8af50a3 | bellard | env->mmuregs[3] = 1; /* overflow (not read before another fault) */ |
250 | e8af50a3 | bellard | env->mmuregs[3] |= (access_index << 5) | (error_code << 2) | 2; |
251 | e8af50a3 | bellard | env->mmuregs[4] = address; /* Fault address register */ |
252 | e8af50a3 | bellard | |
253 | 8d5f07fa | bellard | if (env->mmuregs[0] & MMU_NF || env->psret == 0) // No fault |
254 | e8af50a3 | bellard | return 0; |
255 | e80cfcfc | bellard | do_fault_user:
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256 | e8af50a3 | bellard | env->exception_index = exception; |
257 | e8af50a3 | bellard | env->error_code = error_code; |
258 | e8af50a3 | bellard | return error_code;
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259 | e8af50a3 | bellard | } |
260 | e8af50a3 | bellard | |
261 | e8af50a3 | bellard | void memcpy32(uint32_t *dst, const uint32_t *src) |
262 | e8af50a3 | bellard | { |
263 | e8af50a3 | bellard | dst[0] = src[0]; |
264 | e8af50a3 | bellard | dst[1] = src[1]; |
265 | e8af50a3 | bellard | dst[2] = src[2]; |
266 | e8af50a3 | bellard | dst[3] = src[3]; |
267 | e8af50a3 | bellard | dst[4] = src[4]; |
268 | e8af50a3 | bellard | dst[5] = src[5]; |
269 | e8af50a3 | bellard | dst[6] = src[6]; |
270 | e8af50a3 | bellard | dst[7] = src[7]; |
271 | e8af50a3 | bellard | } |
272 | e8af50a3 | bellard | |
273 | e8af50a3 | bellard | void set_cwp(int new_cwp) |
274 | e8af50a3 | bellard | { |
275 | e8af50a3 | bellard | /* put the modified wrap registers at their proper location */
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276 | e8af50a3 | bellard | if (env->cwp == (NWINDOWS - 1)) |
277 | e8af50a3 | bellard | memcpy32(env->regbase, env->regbase + NWINDOWS * 16);
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278 | e8af50a3 | bellard | env->cwp = new_cwp; |
279 | e8af50a3 | bellard | /* put the wrap registers at their temporary location */
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280 | e8af50a3 | bellard | if (new_cwp == (NWINDOWS - 1)) |
281 | e8af50a3 | bellard | memcpy32(env->regbase + NWINDOWS * 16, env->regbase);
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282 | e8af50a3 | bellard | env->regwptr = env->regbase + (new_cwp * 16);
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283 | e8af50a3 | bellard | } |
284 | e8af50a3 | bellard | |
285 | 0fa85d43 | bellard | void cpu_set_cwp(CPUState *env1, int new_cwp) |
286 | 0fa85d43 | bellard | { |
287 | 0fa85d43 | bellard | CPUState *saved_env; |
288 | 0fa85d43 | bellard | saved_env = env; |
289 | 0fa85d43 | bellard | env = env1; |
290 | 0fa85d43 | bellard | set_cwp(new_cwp); |
291 | 0fa85d43 | bellard | env = saved_env; |
292 | 0fa85d43 | bellard | } |
293 | 0fa85d43 | bellard | |
294 | e8af50a3 | bellard | /*
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295 | e8af50a3 | bellard | * Begin execution of an interruption. is_int is TRUE if coming from
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296 | e8af50a3 | bellard | * the int instruction. next_eip is the EIP value AFTER the interrupt
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297 | e8af50a3 | bellard | * instruction. It is only relevant if is_int is TRUE.
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298 | e8af50a3 | bellard | */
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299 | e8af50a3 | bellard | void do_interrupt(int intno, int is_int, int error_code, |
300 | e8af50a3 | bellard | unsigned int next_eip, int is_hw) |
301 | e8af50a3 | bellard | { |
302 | e8af50a3 | bellard | int cwp;
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303 | e8af50a3 | bellard | |
304 | e8af50a3 | bellard | #ifdef DEBUG_PCALL
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305 | e8af50a3 | bellard | if (loglevel & CPU_LOG_INT) {
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306 | e8af50a3 | bellard | static int count; |
307 | e8af50a3 | bellard | fprintf(logfile, "%6d: v=%02x e=%04x i=%d pc=%08x npc=%08x SP=%08x\n",
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308 | e8af50a3 | bellard | count, intno, error_code, is_int, |
309 | e8af50a3 | bellard | env->pc, |
310 | 8d5f07fa | bellard | env->npc, env->regwptr[6]);
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311 | e80cfcfc | bellard | #if 1 |
312 | 7fe48483 | bellard | cpu_dump_state(env, logfile, fprintf, 0);
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313 | e8af50a3 | bellard | { |
314 | e8af50a3 | bellard | int i;
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315 | e8af50a3 | bellard | uint8_t *ptr; |
316 | e80cfcfc | bellard | |
317 | e8af50a3 | bellard | fprintf(logfile, " code=");
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318 | e80cfcfc | bellard | ptr = (uint8_t *)env->pc; |
319 | e8af50a3 | bellard | for(i = 0; i < 16; i++) { |
320 | e8af50a3 | bellard | fprintf(logfile, " %02x", ldub(ptr + i));
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321 | e8af50a3 | bellard | } |
322 | e8af50a3 | bellard | fprintf(logfile, "\n");
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323 | e8af50a3 | bellard | } |
324 | e8af50a3 | bellard | #endif
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325 | e8af50a3 | bellard | count++; |
326 | e8af50a3 | bellard | } |
327 | e8af50a3 | bellard | #endif
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328 | e80cfcfc | bellard | #if !defined(CONFIG_USER_ONLY)
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329 | e80cfcfc | bellard | if (env->psret == 0) { |
330 | 0fa85d43 | bellard | cpu_abort(cpu_single_env, "Trap while interrupts disabled, Error state");
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331 | e80cfcfc | bellard | return;
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332 | e80cfcfc | bellard | } |
333 | e80cfcfc | bellard | #endif
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334 | e8af50a3 | bellard | env->psret = 0;
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335 | e8af50a3 | bellard | cwp = (env->cwp - 1) & (NWINDOWS - 1); |
336 | e8af50a3 | bellard | set_cwp(cwp); |
337 | e80cfcfc | bellard | env->regwptr[9] = env->pc - 4; // XXX? |
338 | e80cfcfc | bellard | env->regwptr[10] = env->pc;
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339 | e8af50a3 | bellard | env->psrps = env->psrs; |
340 | e8af50a3 | bellard | env->psrs = 1;
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341 | e8af50a3 | bellard | env->tbr = (env->tbr & TBR_BASE_MASK) | (intno << 4);
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342 | e8af50a3 | bellard | env->pc = env->tbr; |
343 | e8af50a3 | bellard | env->npc = env->pc + 4;
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344 | e8af50a3 | bellard | env->exception_index = 0;
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345 | e8af50a3 | bellard | } |
346 | e8af50a3 | bellard | |
347 | e8af50a3 | bellard | void raise_exception_err(int exception_index, int error_code) |
348 | e8af50a3 | bellard | { |
349 | e8af50a3 | bellard | raise_exception(exception_index); |
350 | e8af50a3 | bellard | } |
351 | e80cfcfc | bellard | |
352 | e80cfcfc | bellard | uint32_t mmu_probe(uint32_t address, int mmulev)
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353 | e80cfcfc | bellard | { |
354 | e80cfcfc | bellard | target_phys_addr_t pde_ptr; |
355 | e80cfcfc | bellard | uint32_t pde; |
356 | e80cfcfc | bellard | |
357 | e80cfcfc | bellard | /* Context base + context number */
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358 | e80cfcfc | bellard | pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 4); |
359 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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360 | e80cfcfc | bellard | bswap32s(&pde); |
361 | e80cfcfc | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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362 | e80cfcfc | bellard | default:
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363 | e80cfcfc | bellard | case 0: /* Invalid */ |
364 | e80cfcfc | bellard | case 2: /* PTE, maybe should not happen? */ |
365 | e80cfcfc | bellard | case 3: /* Reserved */ |
366 | e80cfcfc | bellard | return 0; |
367 | e80cfcfc | bellard | case 1: /* L1 PDE */ |
368 | e80cfcfc | bellard | if (mmulev == 3) |
369 | e80cfcfc | bellard | return pde;
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370 | e80cfcfc | bellard | pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4); |
371 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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372 | e80cfcfc | bellard | bswap32s(&pde); |
373 | e80cfcfc | bellard | |
374 | e80cfcfc | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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375 | e80cfcfc | bellard | default:
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376 | e80cfcfc | bellard | case 0: /* Invalid */ |
377 | e80cfcfc | bellard | case 3: /* Reserved */ |
378 | e80cfcfc | bellard | return 0; |
379 | e80cfcfc | bellard | case 2: /* L1 PTE */ |
380 | e80cfcfc | bellard | return pde;
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381 | e80cfcfc | bellard | case 1: /* L2 PDE */ |
382 | e80cfcfc | bellard | if (mmulev == 2) |
383 | e80cfcfc | bellard | return pde;
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384 | e80cfcfc | bellard | pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4); |
385 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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386 | e80cfcfc | bellard | bswap32s(&pde); |
387 | e80cfcfc | bellard | |
388 | e80cfcfc | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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389 | e80cfcfc | bellard | default:
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390 | e80cfcfc | bellard | case 0: /* Invalid */ |
391 | e80cfcfc | bellard | case 3: /* Reserved */ |
392 | e80cfcfc | bellard | return 0; |
393 | e80cfcfc | bellard | case 2: /* L2 PTE */ |
394 | e80cfcfc | bellard | return pde;
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395 | e80cfcfc | bellard | case 1: /* L3 PDE */ |
396 | e80cfcfc | bellard | if (mmulev == 1) |
397 | e80cfcfc | bellard | return pde;
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398 | e80cfcfc | bellard | pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4); |
399 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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400 | e80cfcfc | bellard | bswap32s(&pde); |
401 | e80cfcfc | bellard | |
402 | e80cfcfc | bellard | switch (pde & PTE_ENTRYTYPE_MASK) {
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403 | e80cfcfc | bellard | default:
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404 | e80cfcfc | bellard | case 0: /* Invalid */ |
405 | e80cfcfc | bellard | case 1: /* PDE, should not happen */ |
406 | e80cfcfc | bellard | case 3: /* Reserved */ |
407 | e80cfcfc | bellard | return 0; |
408 | e80cfcfc | bellard | case 2: /* L3 PTE */ |
409 | e80cfcfc | bellard | return pde;
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410 | e80cfcfc | bellard | } |
411 | e80cfcfc | bellard | } |
412 | e80cfcfc | bellard | } |
413 | e80cfcfc | bellard | } |
414 | e80cfcfc | bellard | return 0; |
415 | e80cfcfc | bellard | } |
416 | e80cfcfc | bellard | |
417 | e80cfcfc | bellard | void dump_mmu(void) |
418 | e80cfcfc | bellard | { |
419 | e80cfcfc | bellard | #ifdef DEBUG_MMU
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420 | e80cfcfc | bellard | uint32_t pa, va, va1, va2; |
421 | e80cfcfc | bellard | int n, m, o;
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422 | e80cfcfc | bellard | target_phys_addr_t pde_ptr; |
423 | e80cfcfc | bellard | uint32_t pde; |
424 | e80cfcfc | bellard | |
425 | e80cfcfc | bellard | printf("MMU dump:\n");
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426 | e80cfcfc | bellard | pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 4); |
427 | e80cfcfc | bellard | cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
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428 | e80cfcfc | bellard | bswap32s(&pde); |
429 | e80cfcfc | bellard | printf("Root ptr: 0x%08x, ctx: %d\n", env->mmuregs[1] << 4, env->mmuregs[2]); |
430 | e80cfcfc | bellard | for (n = 0, va = 0; n < 256; n++, va += 16 * 1024 * 1024) { |
431 | e80cfcfc | bellard | pde_ptr = mmu_probe(va, 2);
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432 | e80cfcfc | bellard | if (pde_ptr) {
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433 | e80cfcfc | bellard | pa = cpu_get_phys_page_debug(env, va); |
434 | e80cfcfc | bellard | printf("VA: 0x%08x, PA: 0x%08x PDE: 0x%08x\n", va, pa, pde_ptr);
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435 | e80cfcfc | bellard | for (m = 0, va1 = va; m < 64; m++, va1 += 256 * 1024) { |
436 | e80cfcfc | bellard | pde_ptr = mmu_probe(va1, 1);
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437 | e80cfcfc | bellard | if (pde_ptr) {
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438 | e80cfcfc | bellard | pa = cpu_get_phys_page_debug(env, va1); |
439 | e80cfcfc | bellard | printf(" VA: 0x%08x, PA: 0x%08x PDE: 0x%08x\n", va1, pa, pde_ptr);
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440 | e80cfcfc | bellard | for (o = 0, va2 = va1; o < 64; o++, va2 += 4 * 1024) { |
441 | e80cfcfc | bellard | pde_ptr = mmu_probe(va2, 0);
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442 | e80cfcfc | bellard | if (pde_ptr) {
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443 | e80cfcfc | bellard | pa = cpu_get_phys_page_debug(env, va2); |
444 | e80cfcfc | bellard | printf(" VA: 0x%08x, PA: 0x%08x PTE: 0x%08x\n", va2, pa, pde_ptr);
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445 | e80cfcfc | bellard | } |
446 | e80cfcfc | bellard | } |
447 | e80cfcfc | bellard | } |
448 | e80cfcfc | bellard | } |
449 | e80cfcfc | bellard | } |
450 | e80cfcfc | bellard | } |
451 | e80cfcfc | bellard | printf("MMU dump ends\n");
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452 | e80cfcfc | bellard | #endif
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453 | e80cfcfc | bellard | } |