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1 | 7d13299d | bellard | /*
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2 | 7d13299d | bellard | * i386 emulator main execution loop
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3 | 5fafdf24 | ths | *
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4 | 66321a11 | bellard | * Copyright (c) 2003-2005 Fabrice Bellard
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5 | 7d13299d | bellard | *
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6 | 3ef693a0 | bellard | * This library is free software; you can redistribute it and/or
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7 | 3ef693a0 | bellard | * modify it under the terms of the GNU Lesser General Public
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8 | 3ef693a0 | bellard | * License as published by the Free Software Foundation; either
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9 | 3ef693a0 | bellard | * version 2 of the License, or (at your option) any later version.
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10 | 7d13299d | bellard | *
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11 | 3ef693a0 | bellard | * This library is distributed in the hope that it will be useful,
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12 | 3ef693a0 | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 3ef693a0 | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 3ef693a0 | bellard | * Lesser General Public License for more details.
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15 | 7d13299d | bellard | *
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16 | 3ef693a0 | bellard | * You should have received a copy of the GNU Lesser General Public
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17 | 8167ee88 | Blue Swirl | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 | 7d13299d | bellard | */
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19 | e4533c7a | bellard | #include "config.h" |
20 | 93ac68bc | bellard | #include "exec.h" |
21 | 956034d7 | bellard | #include "disas.h" |
22 | 7cb69cae | bellard | #include "tcg.h" |
23 | 7ba1e619 | aliguori | #include "kvm.h" |
24 | 1d93f0f0 | Jan Kiszka | #include "qemu-barrier.h" |
25 | 7d13299d | bellard | |
26 | fbf9eeb3 | bellard | #if !defined(CONFIG_SOFTMMU)
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27 | fbf9eeb3 | bellard | #undef EAX
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28 | fbf9eeb3 | bellard | #undef ECX
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29 | fbf9eeb3 | bellard | #undef EDX
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30 | fbf9eeb3 | bellard | #undef EBX
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31 | fbf9eeb3 | bellard | #undef ESP
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32 | fbf9eeb3 | bellard | #undef EBP
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33 | fbf9eeb3 | bellard | #undef ESI
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34 | fbf9eeb3 | bellard | #undef EDI
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35 | fbf9eeb3 | bellard | #undef EIP
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36 | fbf9eeb3 | bellard | #include <signal.h> |
37 | 84778508 | blueswir1 | #ifdef __linux__
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38 | fbf9eeb3 | bellard | #include <sys/ucontext.h> |
39 | fbf9eeb3 | bellard | #endif
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40 | 84778508 | blueswir1 | #endif
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41 | fbf9eeb3 | bellard | |
42 | dfe5fff3 | Juan Quintela | #if defined(__sparc__) && !defined(CONFIG_SOLARIS)
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43 | 572a9d4a | blueswir1 | // Work around ugly bugs in glibc that mangle global register contents
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44 | 572a9d4a | blueswir1 | #undef env
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45 | 572a9d4a | blueswir1 | #define env cpu_single_env
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46 | 572a9d4a | blueswir1 | #endif
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47 | 572a9d4a | blueswir1 | |
48 | 36bdbe54 | bellard | int tb_invalidated_flag;
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49 | 36bdbe54 | bellard | |
50 | f0667e66 | Juan Quintela | //#define CONFIG_DEBUG_EXEC
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51 | 9de5e440 | bellard | //#define DEBUG_SIGNAL
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52 | 7d13299d | bellard | |
53 | 6a4955a8 | aliguori | int qemu_cpu_has_work(CPUState *env)
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54 | 6a4955a8 | aliguori | { |
55 | 6a4955a8 | aliguori | return cpu_has_work(env);
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56 | 6a4955a8 | aliguori | } |
57 | 6a4955a8 | aliguori | |
58 | e4533c7a | bellard | void cpu_loop_exit(void) |
59 | e4533c7a | bellard | { |
60 | 1c3569fe | Paolo Bonzini | env->current_tb = NULL;
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61 | e4533c7a | bellard | longjmp(env->jmp_env, 1);
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62 | e4533c7a | bellard | } |
63 | bfed01fc | ths | |
64 | fbf9eeb3 | bellard | /* exit the current TB from a signal handler. The host registers are
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65 | fbf9eeb3 | bellard | restored in a state compatible with the CPU emulator
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66 | fbf9eeb3 | bellard | */
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67 | 5fafdf24 | ths | void cpu_resume_from_signal(CPUState *env1, void *puc) |
68 | fbf9eeb3 | bellard | { |
69 | fbf9eeb3 | bellard | #if !defined(CONFIG_SOFTMMU)
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70 | 84778508 | blueswir1 | #ifdef __linux__
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71 | fbf9eeb3 | bellard | struct ucontext *uc = puc;
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72 | 84778508 | blueswir1 | #elif defined(__OpenBSD__)
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73 | 84778508 | blueswir1 | struct sigcontext *uc = puc;
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74 | 84778508 | blueswir1 | #endif
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75 | fbf9eeb3 | bellard | #endif
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76 | fbf9eeb3 | bellard | |
77 | fbf9eeb3 | bellard | env = env1; |
78 | fbf9eeb3 | bellard | |
79 | fbf9eeb3 | bellard | /* XXX: restore cpu registers saved in host registers */
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80 | fbf9eeb3 | bellard | |
81 | fbf9eeb3 | bellard | #if !defined(CONFIG_SOFTMMU)
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82 | fbf9eeb3 | bellard | if (puc) {
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83 | fbf9eeb3 | bellard | /* XXX: use siglongjmp ? */
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84 | 84778508 | blueswir1 | #ifdef __linux__
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85 | 60e99246 | Aurelien Jarno | #ifdef __ia64
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86 | 60e99246 | Aurelien Jarno | sigprocmask(SIG_SETMASK, (sigset_t *)&uc->uc_sigmask, NULL);
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87 | 60e99246 | Aurelien Jarno | #else
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88 | fbf9eeb3 | bellard | sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL);
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89 | 60e99246 | Aurelien Jarno | #endif
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90 | 84778508 | blueswir1 | #elif defined(__OpenBSD__)
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91 | 84778508 | blueswir1 | sigprocmask(SIG_SETMASK, &uc->sc_mask, NULL);
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92 | 84778508 | blueswir1 | #endif
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93 | fbf9eeb3 | bellard | } |
94 | fbf9eeb3 | bellard | #endif
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95 | 9a3ea654 | pbrook | env->exception_index = -1;
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96 | fbf9eeb3 | bellard | longjmp(env->jmp_env, 1);
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97 | fbf9eeb3 | bellard | } |
98 | fbf9eeb3 | bellard | |
99 | 2e70f6ef | pbrook | /* Execute the code without caching the generated code. An interpreter
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100 | 2e70f6ef | pbrook | could be used if available. */
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101 | 2e70f6ef | pbrook | static void cpu_exec_nocache(int max_cycles, TranslationBlock *orig_tb) |
102 | 2e70f6ef | pbrook | { |
103 | 2e70f6ef | pbrook | unsigned long next_tb; |
104 | 2e70f6ef | pbrook | TranslationBlock *tb; |
105 | 2e70f6ef | pbrook | |
106 | 2e70f6ef | pbrook | /* Should never happen.
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107 | 2e70f6ef | pbrook | We only end up here when an existing TB is too long. */
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108 | 2e70f6ef | pbrook | if (max_cycles > CF_COUNT_MASK)
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109 | 2e70f6ef | pbrook | max_cycles = CF_COUNT_MASK; |
110 | 2e70f6ef | pbrook | |
111 | 2e70f6ef | pbrook | tb = tb_gen_code(env, orig_tb->pc, orig_tb->cs_base, orig_tb->flags, |
112 | 2e70f6ef | pbrook | max_cycles); |
113 | 2e70f6ef | pbrook | env->current_tb = tb; |
114 | 2e70f6ef | pbrook | /* execute the generated code */
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115 | 2e70f6ef | pbrook | next_tb = tcg_qemu_tb_exec(tb->tc_ptr); |
116 | 1c3569fe | Paolo Bonzini | env->current_tb = NULL;
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117 | 2e70f6ef | pbrook | |
118 | 2e70f6ef | pbrook | if ((next_tb & 3) == 2) { |
119 | 2e70f6ef | pbrook | /* Restore PC. This may happen if async event occurs before
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120 | 2e70f6ef | pbrook | the TB starts executing. */
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121 | 622ed360 | aliguori | cpu_pc_from_tb(env, tb); |
122 | 2e70f6ef | pbrook | } |
123 | 2e70f6ef | pbrook | tb_phys_invalidate(tb, -1);
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124 | 2e70f6ef | pbrook | tb_free(tb); |
125 | 2e70f6ef | pbrook | } |
126 | 2e70f6ef | pbrook | |
127 | 8a40a180 | bellard | static TranslationBlock *tb_find_slow(target_ulong pc,
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128 | 8a40a180 | bellard | target_ulong cs_base, |
129 | c068688b | j_mayer | uint64_t flags) |
130 | 8a40a180 | bellard | { |
131 | 8a40a180 | bellard | TranslationBlock *tb, **ptb1; |
132 | 8a40a180 | bellard | unsigned int h; |
133 | 41c1b1c9 | Paul Brook | tb_page_addr_t phys_pc, phys_page1, phys_page2; |
134 | 41c1b1c9 | Paul Brook | target_ulong virt_page2; |
135 | 3b46e624 | ths | |
136 | 8a40a180 | bellard | tb_invalidated_flag = 0;
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137 | 3b46e624 | ths | |
138 | 8a40a180 | bellard | /* find translated block using physical mappings */
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139 | 41c1b1c9 | Paul Brook | phys_pc = get_page_addr_code(env, pc); |
140 | 8a40a180 | bellard | phys_page1 = phys_pc & TARGET_PAGE_MASK; |
141 | 8a40a180 | bellard | phys_page2 = -1;
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142 | 8a40a180 | bellard | h = tb_phys_hash_func(phys_pc); |
143 | 8a40a180 | bellard | ptb1 = &tb_phys_hash[h]; |
144 | 8a40a180 | bellard | for(;;) {
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145 | 8a40a180 | bellard | tb = *ptb1; |
146 | 8a40a180 | bellard | if (!tb)
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147 | 8a40a180 | bellard | goto not_found;
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148 | 5fafdf24 | ths | if (tb->pc == pc &&
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149 | 8a40a180 | bellard | tb->page_addr[0] == phys_page1 &&
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150 | 5fafdf24 | ths | tb->cs_base == cs_base && |
151 | 8a40a180 | bellard | tb->flags == flags) { |
152 | 8a40a180 | bellard | /* check next page if needed */
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153 | 8a40a180 | bellard | if (tb->page_addr[1] != -1) { |
154 | 5fafdf24 | ths | virt_page2 = (pc & TARGET_PAGE_MASK) + |
155 | 8a40a180 | bellard | TARGET_PAGE_SIZE; |
156 | 41c1b1c9 | Paul Brook | phys_page2 = get_page_addr_code(env, virt_page2); |
157 | 8a40a180 | bellard | if (tb->page_addr[1] == phys_page2) |
158 | 8a40a180 | bellard | goto found;
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159 | 8a40a180 | bellard | } else {
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160 | 8a40a180 | bellard | goto found;
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161 | 8a40a180 | bellard | } |
162 | 8a40a180 | bellard | } |
163 | 8a40a180 | bellard | ptb1 = &tb->phys_hash_next; |
164 | 8a40a180 | bellard | } |
165 | 8a40a180 | bellard | not_found:
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166 | 2e70f6ef | pbrook | /* if no translated code available, then translate it now */
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167 | 2e70f6ef | pbrook | tb = tb_gen_code(env, pc, cs_base, flags, 0);
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168 | 3b46e624 | ths | |
169 | 8a40a180 | bellard | found:
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170 | 2c90fe2b | Kirill Batuzov | /* Move the last found TB to the head of the list */
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171 | 2c90fe2b | Kirill Batuzov | if (likely(*ptb1)) {
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172 | 2c90fe2b | Kirill Batuzov | *ptb1 = tb->phys_hash_next; |
173 | 2c90fe2b | Kirill Batuzov | tb->phys_hash_next = tb_phys_hash[h]; |
174 | 2c90fe2b | Kirill Batuzov | tb_phys_hash[h] = tb; |
175 | 2c90fe2b | Kirill Batuzov | } |
176 | 8a40a180 | bellard | /* we add the TB in the virtual pc hash table */
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177 | 8a40a180 | bellard | env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb; |
178 | 8a40a180 | bellard | return tb;
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179 | 8a40a180 | bellard | } |
180 | 8a40a180 | bellard | |
181 | 8a40a180 | bellard | static inline TranslationBlock *tb_find_fast(void) |
182 | 8a40a180 | bellard | { |
183 | 8a40a180 | bellard | TranslationBlock *tb; |
184 | 8a40a180 | bellard | target_ulong cs_base, pc; |
185 | 6b917547 | aliguori | int flags;
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186 | 8a40a180 | bellard | |
187 | 8a40a180 | bellard | /* we record a subset of the CPU state. It will
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188 | 8a40a180 | bellard | always be the same before a given translated block
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189 | 8a40a180 | bellard | is executed. */
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190 | 6b917547 | aliguori | cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags); |
191 | bce61846 | bellard | tb = env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)]; |
192 | 551bd27f | ths | if (unlikely(!tb || tb->pc != pc || tb->cs_base != cs_base ||
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193 | 551bd27f | ths | tb->flags != flags)) { |
194 | 8a40a180 | bellard | tb = tb_find_slow(pc, cs_base, flags); |
195 | 8a40a180 | bellard | } |
196 | 8a40a180 | bellard | return tb;
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197 | 8a40a180 | bellard | } |
198 | 8a40a180 | bellard | |
199 | dde2367e | aliguori | static CPUDebugExcpHandler *debug_excp_handler;
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200 | dde2367e | aliguori | |
201 | dde2367e | aliguori | CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler) |
202 | dde2367e | aliguori | { |
203 | dde2367e | aliguori | CPUDebugExcpHandler *old_handler = debug_excp_handler; |
204 | dde2367e | aliguori | |
205 | dde2367e | aliguori | debug_excp_handler = handler; |
206 | dde2367e | aliguori | return old_handler;
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207 | dde2367e | aliguori | } |
208 | dde2367e | aliguori | |
209 | 6e140f28 | aliguori | static void cpu_handle_debug_exception(CPUState *env) |
210 | 6e140f28 | aliguori | { |
211 | 6e140f28 | aliguori | CPUWatchpoint *wp; |
212 | 6e140f28 | aliguori | |
213 | 6e140f28 | aliguori | if (!env->watchpoint_hit)
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214 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(wp, &env->watchpoints, entry) |
215 | 6e140f28 | aliguori | wp->flags &= ~BP_WATCHPOINT_HIT; |
216 | dde2367e | aliguori | |
217 | dde2367e | aliguori | if (debug_excp_handler)
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218 | dde2367e | aliguori | debug_excp_handler(env); |
219 | 6e140f28 | aliguori | } |
220 | 6e140f28 | aliguori | |
221 | 7d13299d | bellard | /* main execution loop */
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222 | 7d13299d | bellard | |
223 | 1a28cac3 | Marcelo Tosatti | volatile sig_atomic_t exit_request;
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224 | 1a28cac3 | Marcelo Tosatti | |
225 | e4533c7a | bellard | int cpu_exec(CPUState *env1)
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226 | 7d13299d | bellard | { |
227 | 1d9000e8 | Paolo Bonzini | volatile host_reg_t saved_env_reg;
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228 | 8a40a180 | bellard | int ret, interrupt_request;
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229 | 8a40a180 | bellard | TranslationBlock *tb; |
230 | c27004ec | bellard | uint8_t *tc_ptr; |
231 | d5975363 | pbrook | unsigned long next_tb; |
232 | 8c6939c0 | bellard | |
233 | bfed01fc | ths | if (cpu_halted(env1) == EXCP_HALTED)
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234 | bfed01fc | ths | return EXCP_HALTED;
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235 | 5a1e3cfc | bellard | |
236 | 5fafdf24 | ths | cpu_single_env = env1; |
237 | 6a00d601 | bellard | |
238 | 24ebf5f3 | Paolo Bonzini | /* the access to env below is actually saving the global register's
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239 | 24ebf5f3 | Paolo Bonzini | value, so that files not including target-xyz/exec.h are free to
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240 | 24ebf5f3 | Paolo Bonzini | use it. */
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241 | 24ebf5f3 | Paolo Bonzini | QEMU_BUILD_BUG_ON (sizeof (saved_env_reg) != sizeof (env)); |
242 | 24ebf5f3 | Paolo Bonzini | saved_env_reg = (host_reg_t) env; |
243 | 1d93f0f0 | Jan Kiszka | barrier(); |
244 | c27004ec | bellard | env = env1; |
245 | e4533c7a | bellard | |
246 | c629a4bc | Jan Kiszka | if (unlikely(exit_request)) {
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247 | 1a28cac3 | Marcelo Tosatti | env->exit_request = 1;
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248 | 1a28cac3 | Marcelo Tosatti | } |
249 | 1a28cac3 | Marcelo Tosatti | |
250 | ecb644f4 | ths | #if defined(TARGET_I386)
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251 | 14dcc3e2 | Jan Kiszka | if (!kvm_enabled()) {
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252 | 14dcc3e2 | Jan Kiszka | /* put eflags in CPU temporary format */
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253 | 14dcc3e2 | Jan Kiszka | CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
254 | 14dcc3e2 | Jan Kiszka | DF = 1 - (2 * ((env->eflags >> 10) & 1)); |
255 | 14dcc3e2 | Jan Kiszka | CC_OP = CC_OP_EFLAGS; |
256 | 14dcc3e2 | Jan Kiszka | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
257 | 14dcc3e2 | Jan Kiszka | } |
258 | 93ac68bc | bellard | #elif defined(TARGET_SPARC)
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259 | e6e5906b | pbrook | #elif defined(TARGET_M68K)
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260 | e6e5906b | pbrook | env->cc_op = CC_OP_FLAGS; |
261 | e6e5906b | pbrook | env->cc_dest = env->sr & 0xf;
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262 | e6e5906b | pbrook | env->cc_x = (env->sr >> 4) & 1; |
263 | ecb644f4 | ths | #elif defined(TARGET_ALPHA)
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264 | ecb644f4 | ths | #elif defined(TARGET_ARM)
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265 | ecb644f4 | ths | #elif defined(TARGET_PPC)
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266 | b779e29e | Edgar E. Iglesias | #elif defined(TARGET_MICROBLAZE)
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267 | 6af0bf9c | bellard | #elif defined(TARGET_MIPS)
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268 | fdf9b3e8 | bellard | #elif defined(TARGET_SH4)
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269 | f1ccf904 | ths | #elif defined(TARGET_CRIS)
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270 | 10ec5117 | Alexander Graf | #elif defined(TARGET_S390X)
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271 | fdf9b3e8 | bellard | /* XXXXX */
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272 | e4533c7a | bellard | #else
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273 | e4533c7a | bellard | #error unsupported target CPU
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274 | e4533c7a | bellard | #endif
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275 | 3fb2ded1 | bellard | env->exception_index = -1;
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276 | 9d27abd9 | bellard | |
277 | 7d13299d | bellard | /* prepare setjmp context for exception handling */
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278 | 3fb2ded1 | bellard | for(;;) {
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279 | 3fb2ded1 | bellard | if (setjmp(env->jmp_env) == 0) { |
280 | dfe5fff3 | Juan Quintela | #if defined(__sparc__) && !defined(CONFIG_SOLARIS)
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281 | 9ddff3d2 | blueswir1 | #undef env
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282 | 9ddff3d2 | blueswir1 | env = cpu_single_env; |
283 | 9ddff3d2 | blueswir1 | #define env cpu_single_env
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284 | 9ddff3d2 | blueswir1 | #endif
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285 | 3fb2ded1 | bellard | /* if an exception is pending, we execute it here */
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286 | 3fb2ded1 | bellard | if (env->exception_index >= 0) { |
287 | 3fb2ded1 | bellard | if (env->exception_index >= EXCP_INTERRUPT) {
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288 | 3fb2ded1 | bellard | /* exit request from the cpu execution loop */
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289 | 3fb2ded1 | bellard | ret = env->exception_index; |
290 | 6e140f28 | aliguori | if (ret == EXCP_DEBUG)
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291 | 6e140f28 | aliguori | cpu_handle_debug_exception(env); |
292 | 3fb2ded1 | bellard | break;
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293 | 72d239ed | aurel32 | } else {
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294 | 72d239ed | aurel32 | #if defined(CONFIG_USER_ONLY)
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295 | 3fb2ded1 | bellard | /* if user mode only, we simulate a fake exception
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296 | 9f083493 | ths | which will be handled outside the cpu execution
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297 | 3fb2ded1 | bellard | loop */
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298 | 83479e77 | bellard | #if defined(TARGET_I386)
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299 | 5fafdf24 | ths | do_interrupt_user(env->exception_index, |
300 | 5fafdf24 | ths | env->exception_is_int, |
301 | 5fafdf24 | ths | env->error_code, |
302 | 3fb2ded1 | bellard | env->exception_next_eip); |
303 | eba01623 | bellard | /* successfully delivered */
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304 | eba01623 | bellard | env->old_exception = -1;
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305 | 83479e77 | bellard | #endif
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306 | 3fb2ded1 | bellard | ret = env->exception_index; |
307 | 3fb2ded1 | bellard | break;
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308 | 72d239ed | aurel32 | #else
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309 | 83479e77 | bellard | #if defined(TARGET_I386)
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310 | 3fb2ded1 | bellard | /* simulate a real cpu exception. On i386, it can
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311 | 3fb2ded1 | bellard | trigger new exceptions, but we do not handle
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312 | 3fb2ded1 | bellard | double or triple faults yet. */
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313 | 5fafdf24 | ths | do_interrupt(env->exception_index, |
314 | 5fafdf24 | ths | env->exception_is_int, |
315 | 5fafdf24 | ths | env->error_code, |
316 | d05e66d2 | bellard | env->exception_next_eip, 0);
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317 | 678dde13 | ths | /* successfully delivered */
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318 | 678dde13 | ths | env->old_exception = -1;
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319 | ce09776b | bellard | #elif defined(TARGET_PPC)
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320 | ce09776b | bellard | do_interrupt(env); |
321 | b779e29e | Edgar E. Iglesias | #elif defined(TARGET_MICROBLAZE)
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322 | b779e29e | Edgar E. Iglesias | do_interrupt(env); |
323 | 6af0bf9c | bellard | #elif defined(TARGET_MIPS)
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324 | 6af0bf9c | bellard | do_interrupt(env); |
325 | e95c8d51 | bellard | #elif defined(TARGET_SPARC)
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326 | f2bc7e7f | blueswir1 | do_interrupt(env); |
327 | b5ff1b31 | bellard | #elif defined(TARGET_ARM)
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328 | b5ff1b31 | bellard | do_interrupt(env); |
329 | fdf9b3e8 | bellard | #elif defined(TARGET_SH4)
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330 | fdf9b3e8 | bellard | do_interrupt(env); |
331 | eddf68a6 | j_mayer | #elif defined(TARGET_ALPHA)
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332 | eddf68a6 | j_mayer | do_interrupt(env); |
333 | f1ccf904 | ths | #elif defined(TARGET_CRIS)
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334 | f1ccf904 | ths | do_interrupt(env); |
335 | 0633879f | pbrook | #elif defined(TARGET_M68K)
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336 | 0633879f | pbrook | do_interrupt(0);
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337 | 83479e77 | bellard | #endif
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338 | 301d2908 | Paolo Bonzini | env->exception_index = -1;
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339 | 72d239ed | aurel32 | #endif
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340 | 3fb2ded1 | bellard | } |
341 | 5fafdf24 | ths | } |
342 | 9df217a3 | bellard | |
343 | 7ba1e619 | aliguori | if (kvm_enabled()) {
|
344 | becfc390 | aliguori | kvm_cpu_exec(env); |
345 | becfc390 | aliguori | longjmp(env->jmp_env, 1);
|
346 | 7ba1e619 | aliguori | } |
347 | 7ba1e619 | aliguori | |
348 | b5fc09ae | blueswir1 | next_tb = 0; /* force lookup of first TB */ |
349 | 3fb2ded1 | bellard | for(;;) {
|
350 | 68a79315 | bellard | interrupt_request = env->interrupt_request; |
351 | e1638bd8 | malc | if (unlikely(interrupt_request)) {
|
352 | e1638bd8 | malc | if (unlikely(env->singlestep_enabled & SSTEP_NOIRQ)) {
|
353 | e1638bd8 | malc | /* Mask out external interrupts for this step. */
|
354 | e1638bd8 | malc | interrupt_request &= ~(CPU_INTERRUPT_HARD | |
355 | e1638bd8 | malc | CPU_INTERRUPT_FIQ | |
356 | e1638bd8 | malc | CPU_INTERRUPT_SMI | |
357 | e1638bd8 | malc | CPU_INTERRUPT_NMI); |
358 | e1638bd8 | malc | } |
359 | 6658ffb8 | pbrook | if (interrupt_request & CPU_INTERRUPT_DEBUG) {
|
360 | 6658ffb8 | pbrook | env->interrupt_request &= ~CPU_INTERRUPT_DEBUG; |
361 | 6658ffb8 | pbrook | env->exception_index = EXCP_DEBUG; |
362 | 6658ffb8 | pbrook | cpu_loop_exit(); |
363 | 6658ffb8 | pbrook | } |
364 | a90b7318 | balrog | #if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_MIPS) || \
|
365 | b779e29e | Edgar E. Iglesias | defined(TARGET_PPC) || defined(TARGET_ALPHA) || defined(TARGET_CRIS) || \ |
366 | b779e29e | Edgar E. Iglesias | defined(TARGET_MICROBLAZE) |
367 | a90b7318 | balrog | if (interrupt_request & CPU_INTERRUPT_HALT) {
|
368 | a90b7318 | balrog | env->interrupt_request &= ~CPU_INTERRUPT_HALT; |
369 | a90b7318 | balrog | env->halted = 1;
|
370 | a90b7318 | balrog | env->exception_index = EXCP_HLT; |
371 | a90b7318 | balrog | cpu_loop_exit(); |
372 | a90b7318 | balrog | } |
373 | a90b7318 | balrog | #endif
|
374 | 68a79315 | bellard | #if defined(TARGET_I386)
|
375 | b09ea7d5 | Gleb Natapov | if (interrupt_request & CPU_INTERRUPT_INIT) {
|
376 | b09ea7d5 | Gleb Natapov | svm_check_intercept(SVM_EXIT_INIT); |
377 | b09ea7d5 | Gleb Natapov | do_cpu_init(env); |
378 | b09ea7d5 | Gleb Natapov | env->exception_index = EXCP_HALTED; |
379 | b09ea7d5 | Gleb Natapov | cpu_loop_exit(); |
380 | b09ea7d5 | Gleb Natapov | } else if (interrupt_request & CPU_INTERRUPT_SIPI) { |
381 | b09ea7d5 | Gleb Natapov | do_cpu_sipi(env); |
382 | b09ea7d5 | Gleb Natapov | } else if (env->hflags2 & HF2_GIF_MASK) { |
383 | db620f46 | bellard | if ((interrupt_request & CPU_INTERRUPT_SMI) &&
|
384 | db620f46 | bellard | !(env->hflags & HF_SMM_MASK)) { |
385 | db620f46 | bellard | svm_check_intercept(SVM_EXIT_SMI); |
386 | db620f46 | bellard | env->interrupt_request &= ~CPU_INTERRUPT_SMI; |
387 | db620f46 | bellard | do_smm_enter(); |
388 | db620f46 | bellard | next_tb = 0;
|
389 | db620f46 | bellard | } else if ((interrupt_request & CPU_INTERRUPT_NMI) && |
390 | db620f46 | bellard | !(env->hflags2 & HF2_NMI_MASK)) { |
391 | db620f46 | bellard | env->interrupt_request &= ~CPU_INTERRUPT_NMI; |
392 | db620f46 | bellard | env->hflags2 |= HF2_NMI_MASK; |
393 | db620f46 | bellard | do_interrupt(EXCP02_NMI, 0, 0, 0, 1); |
394 | db620f46 | bellard | next_tb = 0;
|
395 | 79c4f6b0 | Huang Ying | } else if (interrupt_request & CPU_INTERRUPT_MCE) { |
396 | 79c4f6b0 | Huang Ying | env->interrupt_request &= ~CPU_INTERRUPT_MCE; |
397 | 79c4f6b0 | Huang Ying | do_interrupt(EXCP12_MCHK, 0, 0, 0, 0); |
398 | 79c4f6b0 | Huang Ying | next_tb = 0;
|
399 | db620f46 | bellard | } else if ((interrupt_request & CPU_INTERRUPT_HARD) && |
400 | db620f46 | bellard | (((env->hflags2 & HF2_VINTR_MASK) && |
401 | db620f46 | bellard | (env->hflags2 & HF2_HIF_MASK)) || |
402 | db620f46 | bellard | (!(env->hflags2 & HF2_VINTR_MASK) && |
403 | db620f46 | bellard | (env->eflags & IF_MASK && |
404 | db620f46 | bellard | !(env->hflags & HF_INHIBIT_IRQ_MASK))))) { |
405 | db620f46 | bellard | int intno;
|
406 | db620f46 | bellard | svm_check_intercept(SVM_EXIT_INTR); |
407 | db620f46 | bellard | env->interrupt_request &= ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_VIRQ); |
408 | db620f46 | bellard | intno = cpu_get_pic_interrupt(env); |
409 | 93fcfe39 | aliguori | qemu_log_mask(CPU_LOG_TB_IN_ASM, "Servicing hardware INT=0x%02x\n", intno);
|
410 | dfe5fff3 | Juan Quintela | #if defined(__sparc__) && !defined(CONFIG_SOLARIS)
|
411 | 9ddff3d2 | blueswir1 | #undef env
|
412 | 9ddff3d2 | blueswir1 | env = cpu_single_env; |
413 | 9ddff3d2 | blueswir1 | #define env cpu_single_env
|
414 | 9ddff3d2 | blueswir1 | #endif
|
415 | db620f46 | bellard | do_interrupt(intno, 0, 0, 0, 1); |
416 | db620f46 | bellard | /* ensure that no TB jump will be modified as
|
417 | db620f46 | bellard | the program flow was changed */
|
418 | db620f46 | bellard | next_tb = 0;
|
419 | 0573fbfc | ths | #if !defined(CONFIG_USER_ONLY)
|
420 | db620f46 | bellard | } else if ((interrupt_request & CPU_INTERRUPT_VIRQ) && |
421 | db620f46 | bellard | (env->eflags & IF_MASK) && |
422 | db620f46 | bellard | !(env->hflags & HF_INHIBIT_IRQ_MASK)) { |
423 | db620f46 | bellard | int intno;
|
424 | db620f46 | bellard | /* FIXME: this should respect TPR */
|
425 | db620f46 | bellard | svm_check_intercept(SVM_EXIT_VINTR); |
426 | db620f46 | bellard | intno = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_vector));
|
427 | 93fcfe39 | aliguori | qemu_log_mask(CPU_LOG_TB_IN_ASM, "Servicing virtual hardware INT=0x%02x\n", intno);
|
428 | db620f46 | bellard | do_interrupt(intno, 0, 0, 0, 1); |
429 | d40c54d6 | aurel32 | env->interrupt_request &= ~CPU_INTERRUPT_VIRQ; |
430 | db620f46 | bellard | next_tb = 0;
|
431 | 0573fbfc | ths | #endif
|
432 | db620f46 | bellard | } |
433 | 68a79315 | bellard | } |
434 | ce09776b | bellard | #elif defined(TARGET_PPC)
|
435 | 9fddaa0c | bellard | #if 0
|
436 | 9fddaa0c | bellard | if ((interrupt_request & CPU_INTERRUPT_RESET)) {
|
437 | d84bda46 | Blue Swirl | cpu_reset(env);
|
438 | 9fddaa0c | bellard | }
|
439 | 9fddaa0c | bellard | #endif
|
440 | 47103572 | j_mayer | if (interrupt_request & CPU_INTERRUPT_HARD) {
|
441 | e9df014c | j_mayer | ppc_hw_interrupt(env); |
442 | e9df014c | j_mayer | if (env->pending_interrupts == 0) |
443 | e9df014c | j_mayer | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
444 | b5fc09ae | blueswir1 | next_tb = 0;
|
445 | ce09776b | bellard | } |
446 | b779e29e | Edgar E. Iglesias | #elif defined(TARGET_MICROBLAZE)
|
447 | b779e29e | Edgar E. Iglesias | if ((interrupt_request & CPU_INTERRUPT_HARD)
|
448 | b779e29e | Edgar E. Iglesias | && (env->sregs[SR_MSR] & MSR_IE) |
449 | b779e29e | Edgar E. Iglesias | && !(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP)) |
450 | b779e29e | Edgar E. Iglesias | && !(env->iflags & (D_FLAG | IMM_FLAG))) { |
451 | b779e29e | Edgar E. Iglesias | env->exception_index = EXCP_IRQ; |
452 | b779e29e | Edgar E. Iglesias | do_interrupt(env); |
453 | b779e29e | Edgar E. Iglesias | next_tb = 0;
|
454 | b779e29e | Edgar E. Iglesias | } |
455 | 6af0bf9c | bellard | #elif defined(TARGET_MIPS)
|
456 | 6af0bf9c | bellard | if ((interrupt_request & CPU_INTERRUPT_HARD) &&
|
457 | 4cdc1cd1 | Aurelien Jarno | cpu_mips_hw_interrupts_pending(env)) { |
458 | 6af0bf9c | bellard | /* Raise it */
|
459 | 6af0bf9c | bellard | env->exception_index = EXCP_EXT_INTERRUPT; |
460 | 6af0bf9c | bellard | env->error_code = 0;
|
461 | 6af0bf9c | bellard | do_interrupt(env); |
462 | b5fc09ae | blueswir1 | next_tb = 0;
|
463 | 6af0bf9c | bellard | } |
464 | e95c8d51 | bellard | #elif defined(TARGET_SPARC)
|
465 | d532b26c | Igor V. Kovalenko | if (interrupt_request & CPU_INTERRUPT_HARD) {
|
466 | d532b26c | Igor V. Kovalenko | if (cpu_interrupts_enabled(env) &&
|
467 | d532b26c | Igor V. Kovalenko | env->interrupt_index > 0) {
|
468 | d532b26c | Igor V. Kovalenko | int pil = env->interrupt_index & 0xf; |
469 | d532b26c | Igor V. Kovalenko | int type = env->interrupt_index & 0xf0; |
470 | d532b26c | Igor V. Kovalenko | |
471 | d532b26c | Igor V. Kovalenko | if (((type == TT_EXTINT) &&
|
472 | d532b26c | Igor V. Kovalenko | cpu_pil_allowed(env, pil)) || |
473 | d532b26c | Igor V. Kovalenko | type != TT_EXTINT) { |
474 | d532b26c | Igor V. Kovalenko | env->exception_index = env->interrupt_index; |
475 | d532b26c | Igor V. Kovalenko | do_interrupt(env); |
476 | d532b26c | Igor V. Kovalenko | next_tb = 0;
|
477 | d532b26c | Igor V. Kovalenko | } |
478 | d532b26c | Igor V. Kovalenko | } |
479 | e95c8d51 | bellard | } else if (interrupt_request & CPU_INTERRUPT_TIMER) { |
480 | e95c8d51 | bellard | //do_interrupt(0, 0, 0, 0, 0);
|
481 | e95c8d51 | bellard | env->interrupt_request &= ~CPU_INTERRUPT_TIMER; |
482 | a90b7318 | balrog | } |
483 | b5ff1b31 | bellard | #elif defined(TARGET_ARM)
|
484 | b5ff1b31 | bellard | if (interrupt_request & CPU_INTERRUPT_FIQ
|
485 | b5ff1b31 | bellard | && !(env->uncached_cpsr & CPSR_F)) { |
486 | b5ff1b31 | bellard | env->exception_index = EXCP_FIQ; |
487 | b5ff1b31 | bellard | do_interrupt(env); |
488 | b5fc09ae | blueswir1 | next_tb = 0;
|
489 | b5ff1b31 | bellard | } |
490 | 9ee6e8bb | pbrook | /* ARMv7-M interrupt return works by loading a magic value
|
491 | 9ee6e8bb | pbrook | into the PC. On real hardware the load causes the
|
492 | 9ee6e8bb | pbrook | return to occur. The qemu implementation performs the
|
493 | 9ee6e8bb | pbrook | jump normally, then does the exception return when the
|
494 | 9ee6e8bb | pbrook | CPU tries to execute code at the magic address.
|
495 | 9ee6e8bb | pbrook | This will cause the magic PC value to be pushed to
|
496 | 9ee6e8bb | pbrook | the stack if an interrupt occured at the wrong time.
|
497 | 9ee6e8bb | pbrook | We avoid this by disabling interrupts when
|
498 | 9ee6e8bb | pbrook | pc contains a magic address. */
|
499 | b5ff1b31 | bellard | if (interrupt_request & CPU_INTERRUPT_HARD
|
500 | 9ee6e8bb | pbrook | && ((IS_M(env) && env->regs[15] < 0xfffffff0) |
501 | 9ee6e8bb | pbrook | || !(env->uncached_cpsr & CPSR_I))) { |
502 | b5ff1b31 | bellard | env->exception_index = EXCP_IRQ; |
503 | b5ff1b31 | bellard | do_interrupt(env); |
504 | b5fc09ae | blueswir1 | next_tb = 0;
|
505 | b5ff1b31 | bellard | } |
506 | fdf9b3e8 | bellard | #elif defined(TARGET_SH4)
|
507 | e96e2044 | ths | if (interrupt_request & CPU_INTERRUPT_HARD) {
|
508 | e96e2044 | ths | do_interrupt(env); |
509 | b5fc09ae | blueswir1 | next_tb = 0;
|
510 | e96e2044 | ths | } |
511 | eddf68a6 | j_mayer | #elif defined(TARGET_ALPHA)
|
512 | eddf68a6 | j_mayer | if (interrupt_request & CPU_INTERRUPT_HARD) {
|
513 | eddf68a6 | j_mayer | do_interrupt(env); |
514 | b5fc09ae | blueswir1 | next_tb = 0;
|
515 | eddf68a6 | j_mayer | } |
516 | f1ccf904 | ths | #elif defined(TARGET_CRIS)
|
517 | 1b1a38b0 | edgar_igl | if (interrupt_request & CPU_INTERRUPT_HARD
|
518 | fb9fb692 | Edgar E. Iglesias | && (env->pregs[PR_CCS] & I_FLAG) |
519 | fb9fb692 | Edgar E. Iglesias | && !env->locked_irq) { |
520 | 1b1a38b0 | edgar_igl | env->exception_index = EXCP_IRQ; |
521 | 1b1a38b0 | edgar_igl | do_interrupt(env); |
522 | 1b1a38b0 | edgar_igl | next_tb = 0;
|
523 | 1b1a38b0 | edgar_igl | } |
524 | 1b1a38b0 | edgar_igl | if (interrupt_request & CPU_INTERRUPT_NMI
|
525 | 1b1a38b0 | edgar_igl | && (env->pregs[PR_CCS] & M_FLAG)) { |
526 | 1b1a38b0 | edgar_igl | env->exception_index = EXCP_NMI; |
527 | f1ccf904 | ths | do_interrupt(env); |
528 | b5fc09ae | blueswir1 | next_tb = 0;
|
529 | f1ccf904 | ths | } |
530 | 0633879f | pbrook | #elif defined(TARGET_M68K)
|
531 | 0633879f | pbrook | if (interrupt_request & CPU_INTERRUPT_HARD
|
532 | 0633879f | pbrook | && ((env->sr & SR_I) >> SR_I_SHIFT) |
533 | 0633879f | pbrook | < env->pending_level) { |
534 | 0633879f | pbrook | /* Real hardware gets the interrupt vector via an
|
535 | 0633879f | pbrook | IACK cycle at this point. Current emulated
|
536 | 0633879f | pbrook | hardware doesn't rely on this, so we
|
537 | 0633879f | pbrook | provide/save the vector when the interrupt is
|
538 | 0633879f | pbrook | first signalled. */
|
539 | 0633879f | pbrook | env->exception_index = env->pending_vector; |
540 | 0633879f | pbrook | do_interrupt(1);
|
541 | b5fc09ae | blueswir1 | next_tb = 0;
|
542 | 0633879f | pbrook | } |
543 | 68a79315 | bellard | #endif
|
544 | 9d05095e | bellard | /* Don't use the cached interupt_request value,
|
545 | 9d05095e | bellard | do_interrupt may have updated the EXITTB flag. */
|
546 | b5ff1b31 | bellard | if (env->interrupt_request & CPU_INTERRUPT_EXITTB) {
|
547 | bf3e8bf1 | bellard | env->interrupt_request &= ~CPU_INTERRUPT_EXITTB; |
548 | bf3e8bf1 | bellard | /* ensure that no TB jump will be modified as
|
549 | bf3e8bf1 | bellard | the program flow was changed */
|
550 | b5fc09ae | blueswir1 | next_tb = 0;
|
551 | bf3e8bf1 | bellard | } |
552 | be214e6c | aurel32 | } |
553 | be214e6c | aurel32 | if (unlikely(env->exit_request)) {
|
554 | be214e6c | aurel32 | env->exit_request = 0;
|
555 | be214e6c | aurel32 | env->exception_index = EXCP_INTERRUPT; |
556 | be214e6c | aurel32 | cpu_loop_exit(); |
557 | 3fb2ded1 | bellard | } |
558 | a73b1fd9 | Richard Henderson | #if defined(DEBUG_DISAS) || defined(CONFIG_DEBUG_EXEC)
|
559 | 8fec2b8c | aliguori | if (qemu_loglevel_mask(CPU_LOG_TB_CPU)) {
|
560 | 3fb2ded1 | bellard | /* restore flags in standard format */
|
561 | ecb644f4 | ths | #if defined(TARGET_I386)
|
562 | a7812ae4 | pbrook | env->eflags = env->eflags | helper_cc_compute_all(CC_OP) | (DF & DF_MASK); |
563 | 93fcfe39 | aliguori | log_cpu_state(env, X86_DUMP_CCOP); |
564 | 3fb2ded1 | bellard | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
565 | e6e5906b | pbrook | #elif defined(TARGET_M68K)
|
566 | e6e5906b | pbrook | cpu_m68k_flush_flags(env, env->cc_op); |
567 | e6e5906b | pbrook | env->cc_op = CC_OP_FLAGS; |
568 | e6e5906b | pbrook | env->sr = (env->sr & 0xffe0)
|
569 | e6e5906b | pbrook | | env->cc_dest | (env->cc_x << 4);
|
570 | 93fcfe39 | aliguori | log_cpu_state(env, 0);
|
571 | e4533c7a | bellard | #else
|
572 | a73b1fd9 | Richard Henderson | log_cpu_state(env, 0);
|
573 | e4533c7a | bellard | #endif
|
574 | 3fb2ded1 | bellard | } |
575 | a73b1fd9 | Richard Henderson | #endif /* DEBUG_DISAS || CONFIG_DEBUG_EXEC */ |
576 | d5975363 | pbrook | spin_lock(&tb_lock); |
577 | 8a40a180 | bellard | tb = tb_find_fast(); |
578 | d5975363 | pbrook | /* Note: we do it here to avoid a gcc bug on Mac OS X when
|
579 | d5975363 | pbrook | doing it in tb_find_slow */
|
580 | d5975363 | pbrook | if (tb_invalidated_flag) {
|
581 | d5975363 | pbrook | /* as some TB could have been invalidated because
|
582 | d5975363 | pbrook | of memory exceptions while generating the code, we
|
583 | d5975363 | pbrook | must recompute the hash index here */
|
584 | d5975363 | pbrook | next_tb = 0;
|
585 | 2e70f6ef | pbrook | tb_invalidated_flag = 0;
|
586 | d5975363 | pbrook | } |
587 | f0667e66 | Juan Quintela | #ifdef CONFIG_DEBUG_EXEC
|
588 | 93fcfe39 | aliguori | qemu_log_mask(CPU_LOG_EXEC, "Trace 0x%08lx [" TARGET_FMT_lx "] %s\n", |
589 | 93fcfe39 | aliguori | (long)tb->tc_ptr, tb->pc,
|
590 | 93fcfe39 | aliguori | lookup_symbol(tb->pc)); |
591 | 9d27abd9 | bellard | #endif
|
592 | 8a40a180 | bellard | /* see if we can patch the calling TB. When the TB
|
593 | 8a40a180 | bellard | spans two pages, we cannot safely do a direct
|
594 | 8a40a180 | bellard | jump. */
|
595 | 040f2fb2 | Paolo Bonzini | if (next_tb != 0 && tb->page_addr[1] == -1) { |
596 | b5fc09ae | blueswir1 | tb_add_jump((TranslationBlock *)(next_tb & ~3), next_tb & 3, tb); |
597 | 3fb2ded1 | bellard | } |
598 | d5975363 | pbrook | spin_unlock(&tb_lock); |
599 | 55e8b85e | malc | |
600 | 55e8b85e | malc | /* cpu_interrupt might be called while translating the
|
601 | 55e8b85e | malc | TB, but before it is linked into a potentially
|
602 | 55e8b85e | malc | infinite loop and becomes env->current_tb. Avoid
|
603 | 55e8b85e | malc | starting execution if there is a pending interrupt. */
|
604 | b0052d15 | Jan Kiszka | env->current_tb = tb; |
605 | b0052d15 | Jan Kiszka | barrier(); |
606 | b0052d15 | Jan Kiszka | if (likely(!env->exit_request)) {
|
607 | 2e70f6ef | pbrook | tc_ptr = tb->tc_ptr; |
608 | 3fb2ded1 | bellard | /* execute the generated code */
|
609 | dfe5fff3 | Juan Quintela | #if defined(__sparc__) && !defined(CONFIG_SOLARIS)
|
610 | 572a9d4a | blueswir1 | #undef env
|
611 | 2e70f6ef | pbrook | env = cpu_single_env; |
612 | 572a9d4a | blueswir1 | #define env cpu_single_env
|
613 | 572a9d4a | blueswir1 | #endif
|
614 | 2e70f6ef | pbrook | next_tb = tcg_qemu_tb_exec(tc_ptr); |
615 | 2e70f6ef | pbrook | if ((next_tb & 3) == 2) { |
616 | bf20dc07 | ths | /* Instruction counter expired. */
|
617 | 2e70f6ef | pbrook | int insns_left;
|
618 | 2e70f6ef | pbrook | tb = (TranslationBlock *)(long)(next_tb & ~3); |
619 | 2e70f6ef | pbrook | /* Restore PC. */
|
620 | 622ed360 | aliguori | cpu_pc_from_tb(env, tb); |
621 | 2e70f6ef | pbrook | insns_left = env->icount_decr.u32; |
622 | 2e70f6ef | pbrook | if (env->icount_extra && insns_left >= 0) { |
623 | 2e70f6ef | pbrook | /* Refill decrementer and continue execution. */
|
624 | 2e70f6ef | pbrook | env->icount_extra += insns_left; |
625 | 2e70f6ef | pbrook | if (env->icount_extra > 0xffff) { |
626 | 2e70f6ef | pbrook | insns_left = 0xffff;
|
627 | 2e70f6ef | pbrook | } else {
|
628 | 2e70f6ef | pbrook | insns_left = env->icount_extra; |
629 | 2e70f6ef | pbrook | } |
630 | 2e70f6ef | pbrook | env->icount_extra -= insns_left; |
631 | 2e70f6ef | pbrook | env->icount_decr.u16.low = insns_left; |
632 | 2e70f6ef | pbrook | } else {
|
633 | 2e70f6ef | pbrook | if (insns_left > 0) { |
634 | 2e70f6ef | pbrook | /* Execute remaining instructions. */
|
635 | 2e70f6ef | pbrook | cpu_exec_nocache(insns_left, tb); |
636 | 2e70f6ef | pbrook | } |
637 | 2e70f6ef | pbrook | env->exception_index = EXCP_INTERRUPT; |
638 | 2e70f6ef | pbrook | next_tb = 0;
|
639 | 2e70f6ef | pbrook | cpu_loop_exit(); |
640 | 2e70f6ef | pbrook | } |
641 | 2e70f6ef | pbrook | } |
642 | 2e70f6ef | pbrook | } |
643 | b0052d15 | Jan Kiszka | env->current_tb = NULL;
|
644 | 4cbf74b6 | bellard | /* reset soft MMU for next block (it can currently
|
645 | 4cbf74b6 | bellard | only be set by a memory fault) */
|
646 | 50a518e3 | ths | } /* for(;;) */
|
647 | 7d13299d | bellard | } |
648 | 3fb2ded1 | bellard | } /* for(;;) */
|
649 | 3fb2ded1 | bellard | |
650 | 7d13299d | bellard | |
651 | e4533c7a | bellard | #if defined(TARGET_I386)
|
652 | 9de5e440 | bellard | /* restore flags in standard format */
|
653 | a7812ae4 | pbrook | env->eflags = env->eflags | helper_cc_compute_all(CC_OP) | (DF & DF_MASK); |
654 | e4533c7a | bellard | #elif defined(TARGET_ARM)
|
655 | b7bcbe95 | bellard | /* XXX: Save/restore host fpu exception state?. */
|
656 | 93ac68bc | bellard | #elif defined(TARGET_SPARC)
|
657 | 67867308 | bellard | #elif defined(TARGET_PPC)
|
658 | e6e5906b | pbrook | #elif defined(TARGET_M68K)
|
659 | e6e5906b | pbrook | cpu_m68k_flush_flags(env, env->cc_op); |
660 | e6e5906b | pbrook | env->cc_op = CC_OP_FLAGS; |
661 | e6e5906b | pbrook | env->sr = (env->sr & 0xffe0)
|
662 | e6e5906b | pbrook | | env->cc_dest | (env->cc_x << 4);
|
663 | b779e29e | Edgar E. Iglesias | #elif defined(TARGET_MICROBLAZE)
|
664 | 6af0bf9c | bellard | #elif defined(TARGET_MIPS)
|
665 | fdf9b3e8 | bellard | #elif defined(TARGET_SH4)
|
666 | eddf68a6 | j_mayer | #elif defined(TARGET_ALPHA)
|
667 | f1ccf904 | ths | #elif defined(TARGET_CRIS)
|
668 | 10ec5117 | Alexander Graf | #elif defined(TARGET_S390X)
|
669 | fdf9b3e8 | bellard | /* XXXXX */
|
670 | e4533c7a | bellard | #else
|
671 | e4533c7a | bellard | #error unsupported target CPU
|
672 | e4533c7a | bellard | #endif
|
673 | 1057eaa7 | pbrook | |
674 | 1057eaa7 | pbrook | /* restore global registers */
|
675 | 1d93f0f0 | Jan Kiszka | barrier(); |
676 | 24ebf5f3 | Paolo Bonzini | env = (void *) saved_env_reg;
|
677 | 1057eaa7 | pbrook | |
678 | 6a00d601 | bellard | /* fail safe : never use cpu_single_env outside cpu_exec() */
|
679 | 5fafdf24 | ths | cpu_single_env = NULL;
|
680 | 7d13299d | bellard | return ret;
|
681 | 7d13299d | bellard | } |
682 | 6dbad63e | bellard | |
683 | fbf9eeb3 | bellard | /* must only be called from the generated code as an exception can be
|
684 | fbf9eeb3 | bellard | generated */
|
685 | fbf9eeb3 | bellard | void tb_invalidate_page_range(target_ulong start, target_ulong end)
|
686 | fbf9eeb3 | bellard | { |
687 | dc5d0b3d | bellard | /* XXX: cannot enable it yet because it yields to MMU exception
|
688 | dc5d0b3d | bellard | where NIP != read address on PowerPC */
|
689 | dc5d0b3d | bellard | #if 0
|
690 | fbf9eeb3 | bellard | target_ulong phys_addr;
|
691 | fbf9eeb3 | bellard | phys_addr = get_phys_addr_code(env, start);
|
692 | fbf9eeb3 | bellard | tb_invalidate_phys_page_range(phys_addr, phys_addr + end - start, 0);
|
693 | dc5d0b3d | bellard | #endif
|
694 | fbf9eeb3 | bellard | } |
695 | fbf9eeb3 | bellard | |
696 | 1a18c71b | bellard | #if defined(TARGET_I386) && defined(CONFIG_USER_ONLY)
|
697 | e4533c7a | bellard | |
698 | 6dbad63e | bellard | void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) |
699 | 6dbad63e | bellard | { |
700 | 6dbad63e | bellard | CPUX86State *saved_env; |
701 | 6dbad63e | bellard | |
702 | 6dbad63e | bellard | saved_env = env; |
703 | 6dbad63e | bellard | env = s; |
704 | a412ac57 | bellard | if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { |
705 | a513fe19 | bellard | selector &= 0xffff;
|
706 | 5fafdf24 | ths | cpu_x86_load_seg_cache(env, seg_reg, selector, |
707 | c27004ec | bellard | (selector << 4), 0xffff, 0); |
708 | a513fe19 | bellard | } else {
|
709 | 5d97559d | bellard | helper_load_seg(seg_reg, selector); |
710 | a513fe19 | bellard | } |
711 | 6dbad63e | bellard | env = saved_env; |
712 | 6dbad63e | bellard | } |
713 | 9de5e440 | bellard | |
714 | 6f12a2a6 | bellard | void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32) |
715 | d0a1ffc9 | bellard | { |
716 | d0a1ffc9 | bellard | CPUX86State *saved_env; |
717 | d0a1ffc9 | bellard | |
718 | d0a1ffc9 | bellard | saved_env = env; |
719 | d0a1ffc9 | bellard | env = s; |
720 | 3b46e624 | ths | |
721 | 6f12a2a6 | bellard | helper_fsave(ptr, data32); |
722 | d0a1ffc9 | bellard | |
723 | d0a1ffc9 | bellard | env = saved_env; |
724 | d0a1ffc9 | bellard | } |
725 | d0a1ffc9 | bellard | |
726 | 6f12a2a6 | bellard | void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32) |
727 | d0a1ffc9 | bellard | { |
728 | d0a1ffc9 | bellard | CPUX86State *saved_env; |
729 | d0a1ffc9 | bellard | |
730 | d0a1ffc9 | bellard | saved_env = env; |
731 | d0a1ffc9 | bellard | env = s; |
732 | 3b46e624 | ths | |
733 | 6f12a2a6 | bellard | helper_frstor(ptr, data32); |
734 | d0a1ffc9 | bellard | |
735 | d0a1ffc9 | bellard | env = saved_env; |
736 | d0a1ffc9 | bellard | } |
737 | d0a1ffc9 | bellard | |
738 | e4533c7a | bellard | #endif /* TARGET_I386 */ |
739 | e4533c7a | bellard | |
740 | 67b915a5 | bellard | #if !defined(CONFIG_SOFTMMU)
|
741 | 67b915a5 | bellard | |
742 | 3fb2ded1 | bellard | #if defined(TARGET_I386)
|
743 | 0b5c1ce8 | Nathan Froyd | #define EXCEPTION_ACTION raise_exception_err(env->exception_index, env->error_code)
|
744 | 0b5c1ce8 | Nathan Froyd | #else
|
745 | 0b5c1ce8 | Nathan Froyd | #define EXCEPTION_ACTION cpu_loop_exit()
|
746 | 0b5c1ce8 | Nathan Froyd | #endif
|
747 | 3fb2ded1 | bellard | |
748 | b56dad1c | bellard | /* 'pc' is the host PC at which the exception was raised. 'address' is
|
749 | fd6ce8f6 | bellard | the effective address of the memory exception. 'is_write' is 1 if a
|
750 | fd6ce8f6 | bellard | write caused the exception and otherwise 0'. 'old_set' is the
|
751 | fd6ce8f6 | bellard | signal set which should be restored */
|
752 | 2b413144 | bellard | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, |
753 | 5fafdf24 | ths | int is_write, sigset_t *old_set,
|
754 | bf3e8bf1 | bellard | void *puc)
|
755 | 9de5e440 | bellard | { |
756 | a513fe19 | bellard | TranslationBlock *tb; |
757 | a513fe19 | bellard | int ret;
|
758 | 68a79315 | bellard | |
759 | 83479e77 | bellard | if (cpu_single_env)
|
760 | 83479e77 | bellard | env = cpu_single_env; /* XXX: find a correct solution for multithread */
|
761 | fd6ce8f6 | bellard | #if defined(DEBUG_SIGNAL)
|
762 | 5fafdf24 | ths | qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
|
763 | bf3e8bf1 | bellard | pc, address, is_write, *(unsigned long *)old_set); |
764 | 9de5e440 | bellard | #endif
|
765 | 25eb4484 | bellard | /* XXX: locking issue */
|
766 | 53a5960a | pbrook | if (is_write && page_unprotect(h2g(address), pc, puc)) {
|
767 | fd6ce8f6 | bellard | return 1; |
768 | fd6ce8f6 | bellard | } |
769 | fbf9eeb3 | bellard | |
770 | 3fb2ded1 | bellard | /* see if it is an MMU fault */
|
771 | 0b5c1ce8 | Nathan Froyd | ret = cpu_handle_mmu_fault(env, address, is_write, MMU_USER_IDX, 0);
|
772 | 68016c62 | bellard | if (ret < 0) |
773 | 68016c62 | bellard | return 0; /* not an MMU fault */ |
774 | 68016c62 | bellard | if (ret == 0) |
775 | 68016c62 | bellard | return 1; /* the MMU fault was handled without causing real CPU fault */ |
776 | 68016c62 | bellard | /* now we have a real cpu fault */
|
777 | 68016c62 | bellard | tb = tb_find_pc(pc); |
778 | 68016c62 | bellard | if (tb) {
|
779 | 68016c62 | bellard | /* the PC is inside the translated code. It means that we have
|
780 | 68016c62 | bellard | a virtual CPU fault */
|
781 | 68016c62 | bellard | cpu_restore_state(tb, env, pc, puc); |
782 | 68016c62 | bellard | } |
783 | 68016c62 | bellard | |
784 | 68016c62 | bellard | /* we restore the process signal mask as the sigreturn should
|
785 | 68016c62 | bellard | do it (XXX: use sigsetjmp) */
|
786 | 68016c62 | bellard | sigprocmask(SIG_SETMASK, old_set, NULL);
|
787 | 0b5c1ce8 | Nathan Froyd | EXCEPTION_ACTION; |
788 | e6e5906b | pbrook | |
789 | e6e5906b | pbrook | /* never comes here */
|
790 | 67867308 | bellard | return 1; |
791 | 67867308 | bellard | } |
792 | 6af0bf9c | bellard | |
793 | 2b413144 | bellard | #if defined(__i386__)
|
794 | 2b413144 | bellard | |
795 | d8ecc0b9 | bellard | #if defined(__APPLE__)
|
796 | d8ecc0b9 | bellard | # include <sys/ucontext.h> |
797 | d8ecc0b9 | bellard | |
798 | d8ecc0b9 | bellard | # define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->ss.eip)) |
799 | d8ecc0b9 | bellard | # define TRAP_sig(context) ((context)->uc_mcontext->es.trapno)
|
800 | d8ecc0b9 | bellard | # define ERROR_sig(context) ((context)->uc_mcontext->es.err)
|
801 | d39bb24a | blueswir1 | # define MASK_sig(context) ((context)->uc_sigmask)
|
802 | 78cfb07f | Juergen Lock | #elif defined (__NetBSD__)
|
803 | 78cfb07f | Juergen Lock | # include <ucontext.h> |
804 | 78cfb07f | Juergen Lock | |
805 | 78cfb07f | Juergen Lock | # define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP])
|
806 | 78cfb07f | Juergen Lock | # define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
|
807 | 78cfb07f | Juergen Lock | # define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
|
808 | 78cfb07f | Juergen Lock | # define MASK_sig(context) ((context)->uc_sigmask)
|
809 | 78cfb07f | Juergen Lock | #elif defined (__FreeBSD__) || defined(__DragonFly__)
|
810 | 78cfb07f | Juergen Lock | # include <ucontext.h> |
811 | 78cfb07f | Juergen Lock | |
812 | 78cfb07f | Juergen Lock | # define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_eip)) |
813 | 78cfb07f | Juergen Lock | # define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
|
814 | 78cfb07f | Juergen Lock | # define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
|
815 | 78cfb07f | Juergen Lock | # define MASK_sig(context) ((context)->uc_sigmask)
|
816 | d39bb24a | blueswir1 | #elif defined(__OpenBSD__)
|
817 | d39bb24a | blueswir1 | # define EIP_sig(context) ((context)->sc_eip)
|
818 | d39bb24a | blueswir1 | # define TRAP_sig(context) ((context)->sc_trapno)
|
819 | d39bb24a | blueswir1 | # define ERROR_sig(context) ((context)->sc_err)
|
820 | d39bb24a | blueswir1 | # define MASK_sig(context) ((context)->sc_mask)
|
821 | d8ecc0b9 | bellard | #else
|
822 | d8ecc0b9 | bellard | # define EIP_sig(context) ((context)->uc_mcontext.gregs[REG_EIP])
|
823 | d8ecc0b9 | bellard | # define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
|
824 | d8ecc0b9 | bellard | # define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
|
825 | d39bb24a | blueswir1 | # define MASK_sig(context) ((context)->uc_sigmask)
|
826 | d8ecc0b9 | bellard | #endif
|
827 | d8ecc0b9 | bellard | |
828 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
829 | e4533c7a | bellard | void *puc)
|
830 | 9de5e440 | bellard | { |
831 | 5a7b542b | ths | siginfo_t *info = pinfo; |
832 | 78cfb07f | Juergen Lock | #if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__)
|
833 | 78cfb07f | Juergen Lock | ucontext_t *uc = puc; |
834 | 78cfb07f | Juergen Lock | #elif defined(__OpenBSD__)
|
835 | d39bb24a | blueswir1 | struct sigcontext *uc = puc;
|
836 | d39bb24a | blueswir1 | #else
|
837 | 9de5e440 | bellard | struct ucontext *uc = puc;
|
838 | d39bb24a | blueswir1 | #endif
|
839 | 9de5e440 | bellard | unsigned long pc; |
840 | bf3e8bf1 | bellard | int trapno;
|
841 | 97eb5b14 | bellard | |
842 | d691f669 | bellard | #ifndef REG_EIP
|
843 | d691f669 | bellard | /* for glibc 2.1 */
|
844 | fd6ce8f6 | bellard | #define REG_EIP EIP
|
845 | fd6ce8f6 | bellard | #define REG_ERR ERR
|
846 | fd6ce8f6 | bellard | #define REG_TRAPNO TRAPNO
|
847 | d691f669 | bellard | #endif
|
848 | d8ecc0b9 | bellard | pc = EIP_sig(uc); |
849 | d8ecc0b9 | bellard | trapno = TRAP_sig(uc); |
850 | ec6338ba | bellard | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
851 | ec6338ba | bellard | trapno == 0xe ?
|
852 | ec6338ba | bellard | (ERROR_sig(uc) >> 1) & 1 : 0, |
853 | d39bb24a | blueswir1 | &MASK_sig(uc), puc); |
854 | 2b413144 | bellard | } |
855 | 2b413144 | bellard | |
856 | bc51c5c9 | bellard | #elif defined(__x86_64__)
|
857 | bc51c5c9 | bellard | |
858 | b3efe5c8 | blueswir1 | #ifdef __NetBSD__
|
859 | d397abbd | blueswir1 | #define PC_sig(context) _UC_MACHINE_PC(context)
|
860 | d397abbd | blueswir1 | #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
|
861 | d397abbd | blueswir1 | #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
|
862 | d397abbd | blueswir1 | #define MASK_sig(context) ((context)->uc_sigmask)
|
863 | d397abbd | blueswir1 | #elif defined(__OpenBSD__)
|
864 | d397abbd | blueswir1 | #define PC_sig(context) ((context)->sc_rip)
|
865 | d397abbd | blueswir1 | #define TRAP_sig(context) ((context)->sc_trapno)
|
866 | d397abbd | blueswir1 | #define ERROR_sig(context) ((context)->sc_err)
|
867 | d397abbd | blueswir1 | #define MASK_sig(context) ((context)->sc_mask)
|
868 | 78cfb07f | Juergen Lock | #elif defined (__FreeBSD__) || defined(__DragonFly__)
|
869 | 78cfb07f | Juergen Lock | #include <ucontext.h> |
870 | 78cfb07f | Juergen Lock | |
871 | 78cfb07f | Juergen Lock | #define PC_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_rip)) |
872 | 78cfb07f | Juergen Lock | #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
|
873 | 78cfb07f | Juergen Lock | #define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
|
874 | 78cfb07f | Juergen Lock | #define MASK_sig(context) ((context)->uc_sigmask)
|
875 | b3efe5c8 | blueswir1 | #else
|
876 | d397abbd | blueswir1 | #define PC_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
|
877 | d397abbd | blueswir1 | #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
|
878 | d397abbd | blueswir1 | #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
|
879 | d397abbd | blueswir1 | #define MASK_sig(context) ((context)->uc_sigmask)
|
880 | b3efe5c8 | blueswir1 | #endif
|
881 | b3efe5c8 | blueswir1 | |
882 | 5a7b542b | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
883 | bc51c5c9 | bellard | void *puc)
|
884 | bc51c5c9 | bellard | { |
885 | 5a7b542b | ths | siginfo_t *info = pinfo; |
886 | bc51c5c9 | bellard | unsigned long pc; |
887 | 78cfb07f | Juergen Lock | #if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__)
|
888 | b3efe5c8 | blueswir1 | ucontext_t *uc = puc; |
889 | d397abbd | blueswir1 | #elif defined(__OpenBSD__)
|
890 | d397abbd | blueswir1 | struct sigcontext *uc = puc;
|
891 | b3efe5c8 | blueswir1 | #else
|
892 | b3efe5c8 | blueswir1 | struct ucontext *uc = puc;
|
893 | b3efe5c8 | blueswir1 | #endif
|
894 | bc51c5c9 | bellard | |
895 | d397abbd | blueswir1 | pc = PC_sig(uc); |
896 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
897 | d397abbd | blueswir1 | TRAP_sig(uc) == 0xe ?
|
898 | d397abbd | blueswir1 | (ERROR_sig(uc) >> 1) & 1 : 0, |
899 | d397abbd | blueswir1 | &MASK_sig(uc), puc); |
900 | bc51c5c9 | bellard | } |
901 | bc51c5c9 | bellard | |
902 | e58ffeb3 | malc | #elif defined(_ARCH_PPC)
|
903 | 2b413144 | bellard | |
904 | 83fb7adf | bellard | /***********************************************************************
|
905 | 83fb7adf | bellard | * signal context platform-specific definitions
|
906 | 83fb7adf | bellard | * From Wine
|
907 | 83fb7adf | bellard | */
|
908 | 83fb7adf | bellard | #ifdef linux
|
909 | 83fb7adf | bellard | /* All Registers access - only for local access */
|
910 | 83fb7adf | bellard | # define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
|
911 | 83fb7adf | bellard | /* Gpr Registers access */
|
912 | 83fb7adf | bellard | # define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
|
913 | 83fb7adf | bellard | # define IAR_sig(context) REG_sig(nip, context) /* Program counter */ |
914 | 83fb7adf | bellard | # define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */ |
915 | 83fb7adf | bellard | # define CTR_sig(context) REG_sig(ctr, context) /* Count register */ |
916 | 83fb7adf | bellard | # define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */ |
917 | 83fb7adf | bellard | # define LR_sig(context) REG_sig(link, context) /* Link register */ |
918 | 83fb7adf | bellard | # define CR_sig(context) REG_sig(ccr, context) /* Condition register */ |
919 | 83fb7adf | bellard | /* Float Registers access */
|
920 | 83fb7adf | bellard | # define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num]) |
921 | 83fb7adf | bellard | # define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4))) |
922 | 83fb7adf | bellard | /* Exception Registers access */
|
923 | 83fb7adf | bellard | # define DAR_sig(context) REG_sig(dar, context)
|
924 | 83fb7adf | bellard | # define DSISR_sig(context) REG_sig(dsisr, context)
|
925 | 83fb7adf | bellard | # define TRAP_sig(context) REG_sig(trap, context)
|
926 | 83fb7adf | bellard | #endif /* linux */ |
927 | 83fb7adf | bellard | |
928 | 58d9b1e0 | Juergen Lock | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
929 | 58d9b1e0 | Juergen Lock | #include <ucontext.h> |
930 | 58d9b1e0 | Juergen Lock | # define IAR_sig(context) ((context)->uc_mcontext.mc_srr0)
|
931 | 58d9b1e0 | Juergen Lock | # define MSR_sig(context) ((context)->uc_mcontext.mc_srr1)
|
932 | 58d9b1e0 | Juergen Lock | # define CTR_sig(context) ((context)->uc_mcontext.mc_ctr)
|
933 | 58d9b1e0 | Juergen Lock | # define XER_sig(context) ((context)->uc_mcontext.mc_xer)
|
934 | 58d9b1e0 | Juergen Lock | # define LR_sig(context) ((context)->uc_mcontext.mc_lr)
|
935 | 58d9b1e0 | Juergen Lock | # define CR_sig(context) ((context)->uc_mcontext.mc_cr)
|
936 | 58d9b1e0 | Juergen Lock | /* Exception Registers access */
|
937 | 58d9b1e0 | Juergen Lock | # define DAR_sig(context) ((context)->uc_mcontext.mc_dar)
|
938 | 58d9b1e0 | Juergen Lock | # define DSISR_sig(context) ((context)->uc_mcontext.mc_dsisr)
|
939 | 58d9b1e0 | Juergen Lock | # define TRAP_sig(context) ((context)->uc_mcontext.mc_exc)
|
940 | 58d9b1e0 | Juergen Lock | #endif /* __FreeBSD__|| __FreeBSD_kernel__ */ |
941 | 58d9b1e0 | Juergen Lock | |
942 | 83fb7adf | bellard | #ifdef __APPLE__
|
943 | 83fb7adf | bellard | # include <sys/ucontext.h> |
944 | 83fb7adf | bellard | typedef struct ucontext SIGCONTEXT; |
945 | 83fb7adf | bellard | /* All Registers access - only for local access */
|
946 | 83fb7adf | bellard | # define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
|
947 | 83fb7adf | bellard | # define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
|
948 | 83fb7adf | bellard | # define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
|
949 | 83fb7adf | bellard | # define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
|
950 | 83fb7adf | bellard | /* Gpr Registers access */
|
951 | 83fb7adf | bellard | # define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) |
952 | 83fb7adf | bellard | # define IAR_sig(context) REG_sig(srr0, context) /* Program counter */ |
953 | 83fb7adf | bellard | # define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */ |
954 | 83fb7adf | bellard | # define CTR_sig(context) REG_sig(ctr, context)
|
955 | 83fb7adf | bellard | # define XER_sig(context) REG_sig(xer, context) /* Link register */ |
956 | 83fb7adf | bellard | # define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */ |
957 | 83fb7adf | bellard | # define CR_sig(context) REG_sig(cr, context) /* Condition register */ |
958 | 83fb7adf | bellard | /* Float Registers access */
|
959 | 83fb7adf | bellard | # define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
|
960 | 83fb7adf | bellard | # define FPSCR_sig(context) ((double)FLOATREG_sig(fpscr, context)) |
961 | 83fb7adf | bellard | /* Exception Registers access */
|
962 | 83fb7adf | bellard | # define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */ |
963 | 83fb7adf | bellard | # define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
|
964 | 83fb7adf | bellard | # define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */ |
965 | 83fb7adf | bellard | #endif /* __APPLE__ */ |
966 | 83fb7adf | bellard | |
967 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
968 | e4533c7a | bellard | void *puc)
|
969 | 2b413144 | bellard | { |
970 | 5a7b542b | ths | siginfo_t *info = pinfo; |
971 | 58d9b1e0 | Juergen Lock | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
972 | 58d9b1e0 | Juergen Lock | ucontext_t *uc = puc; |
973 | 58d9b1e0 | Juergen Lock | #else
|
974 | 25eb4484 | bellard | struct ucontext *uc = puc;
|
975 | 58d9b1e0 | Juergen Lock | #endif
|
976 | 25eb4484 | bellard | unsigned long pc; |
977 | 25eb4484 | bellard | int is_write;
|
978 | 25eb4484 | bellard | |
979 | 83fb7adf | bellard | pc = IAR_sig(uc); |
980 | 25eb4484 | bellard | is_write = 0;
|
981 | 25eb4484 | bellard | #if 0
|
982 | 25eb4484 | bellard | /* ppc 4xx case */
|
983 | 83fb7adf | bellard | if (DSISR_sig(uc) & 0x00800000)
|
984 | 25eb4484 | bellard | is_write = 1;
|
985 | 25eb4484 | bellard | #else
|
986 | 83fb7adf | bellard | if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000)) |
987 | 25eb4484 | bellard | is_write = 1;
|
988 | 25eb4484 | bellard | #endif
|
989 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
990 | bf3e8bf1 | bellard | is_write, &uc->uc_sigmask, puc); |
991 | 2b413144 | bellard | } |
992 | 2b413144 | bellard | |
993 | 2f87c607 | bellard | #elif defined(__alpha__)
|
994 | 2f87c607 | bellard | |
995 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
996 | 2f87c607 | bellard | void *puc)
|
997 | 2f87c607 | bellard | { |
998 | 5a7b542b | ths | siginfo_t *info = pinfo; |
999 | 2f87c607 | bellard | struct ucontext *uc = puc;
|
1000 | 2f87c607 | bellard | uint32_t *pc = uc->uc_mcontext.sc_pc; |
1001 | 2f87c607 | bellard | uint32_t insn = *pc; |
1002 | 2f87c607 | bellard | int is_write = 0; |
1003 | 2f87c607 | bellard | |
1004 | 8c6939c0 | bellard | /* XXX: need kernel patch to get write flag faster */
|
1005 | 2f87c607 | bellard | switch (insn >> 26) { |
1006 | 2f87c607 | bellard | case 0x0d: // stw |
1007 | 2f87c607 | bellard | case 0x0e: // stb |
1008 | 2f87c607 | bellard | case 0x0f: // stq_u |
1009 | 2f87c607 | bellard | case 0x24: // stf |
1010 | 2f87c607 | bellard | case 0x25: // stg |
1011 | 2f87c607 | bellard | case 0x26: // sts |
1012 | 2f87c607 | bellard | case 0x27: // stt |
1013 | 2f87c607 | bellard | case 0x2c: // stl |
1014 | 2f87c607 | bellard | case 0x2d: // stq |
1015 | 2f87c607 | bellard | case 0x2e: // stl_c |
1016 | 2f87c607 | bellard | case 0x2f: // stq_c |
1017 | 2f87c607 | bellard | is_write = 1;
|
1018 | 2f87c607 | bellard | } |
1019 | 2f87c607 | bellard | |
1020 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
1021 | bf3e8bf1 | bellard | is_write, &uc->uc_sigmask, puc); |
1022 | 2f87c607 | bellard | } |
1023 | 8c6939c0 | bellard | #elif defined(__sparc__)
|
1024 | 8c6939c0 | bellard | |
1025 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
1026 | e4533c7a | bellard | void *puc)
|
1027 | 8c6939c0 | bellard | { |
1028 | 5a7b542b | ths | siginfo_t *info = pinfo; |
1029 | 8c6939c0 | bellard | int is_write;
|
1030 | 8c6939c0 | bellard | uint32_t insn; |
1031 | dfe5fff3 | Juan Quintela | #if !defined(__arch64__) || defined(CONFIG_SOLARIS)
|
1032 | c9e1e2b0 | blueswir1 | uint32_t *regs = (uint32_t *)(info + 1);
|
1033 | c9e1e2b0 | blueswir1 | void *sigmask = (regs + 20); |
1034 | 8c6939c0 | bellard | /* XXX: is there a standard glibc define ? */
|
1035 | c9e1e2b0 | blueswir1 | unsigned long pc = regs[1]; |
1036 | c9e1e2b0 | blueswir1 | #else
|
1037 | 84778508 | blueswir1 | #ifdef __linux__
|
1038 | c9e1e2b0 | blueswir1 | struct sigcontext *sc = puc;
|
1039 | c9e1e2b0 | blueswir1 | unsigned long pc = sc->sigc_regs.tpc; |
1040 | c9e1e2b0 | blueswir1 | void *sigmask = (void *)sc->sigc_mask; |
1041 | 84778508 | blueswir1 | #elif defined(__OpenBSD__)
|
1042 | 84778508 | blueswir1 | struct sigcontext *uc = puc;
|
1043 | 84778508 | blueswir1 | unsigned long pc = uc->sc_pc; |
1044 | 84778508 | blueswir1 | void *sigmask = (void *)(long)uc->sc_mask; |
1045 | 84778508 | blueswir1 | #endif
|
1046 | c9e1e2b0 | blueswir1 | #endif
|
1047 | c9e1e2b0 | blueswir1 | |
1048 | 8c6939c0 | bellard | /* XXX: need kernel patch to get write flag faster */
|
1049 | 8c6939c0 | bellard | is_write = 0;
|
1050 | 8c6939c0 | bellard | insn = *(uint32_t *)pc; |
1051 | 8c6939c0 | bellard | if ((insn >> 30) == 3) { |
1052 | 8c6939c0 | bellard | switch((insn >> 19) & 0x3f) { |
1053 | 8c6939c0 | bellard | case 0x05: // stb |
1054 | d877fa5a | Blue Swirl | case 0x15: // stba |
1055 | 8c6939c0 | bellard | case 0x06: // sth |
1056 | d877fa5a | Blue Swirl | case 0x16: // stha |
1057 | 8c6939c0 | bellard | case 0x04: // st |
1058 | d877fa5a | Blue Swirl | case 0x14: // sta |
1059 | 8c6939c0 | bellard | case 0x07: // std |
1060 | d877fa5a | Blue Swirl | case 0x17: // stda |
1061 | d877fa5a | Blue Swirl | case 0x0e: // stx |
1062 | d877fa5a | Blue Swirl | case 0x1e: // stxa |
1063 | 8c6939c0 | bellard | case 0x24: // stf |
1064 | d877fa5a | Blue Swirl | case 0x34: // stfa |
1065 | 8c6939c0 | bellard | case 0x27: // stdf |
1066 | d877fa5a | Blue Swirl | case 0x37: // stdfa |
1067 | d877fa5a | Blue Swirl | case 0x26: // stqf |
1068 | d877fa5a | Blue Swirl | case 0x36: // stqfa |
1069 | 8c6939c0 | bellard | case 0x25: // stfsr |
1070 | d877fa5a | Blue Swirl | case 0x3c: // casa |
1071 | d877fa5a | Blue Swirl | case 0x3e: // casxa |
1072 | 8c6939c0 | bellard | is_write = 1;
|
1073 | 8c6939c0 | bellard | break;
|
1074 | 8c6939c0 | bellard | } |
1075 | 8c6939c0 | bellard | } |
1076 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
1077 | bf3e8bf1 | bellard | is_write, sigmask, NULL);
|
1078 | 8c6939c0 | bellard | } |
1079 | 8c6939c0 | bellard | |
1080 | 8c6939c0 | bellard | #elif defined(__arm__)
|
1081 | 8c6939c0 | bellard | |
1082 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
1083 | e4533c7a | bellard | void *puc)
|
1084 | 8c6939c0 | bellard | { |
1085 | 5a7b542b | ths | siginfo_t *info = pinfo; |
1086 | 8c6939c0 | bellard | struct ucontext *uc = puc;
|
1087 | 8c6939c0 | bellard | unsigned long pc; |
1088 | 8c6939c0 | bellard | int is_write;
|
1089 | 3b46e624 | ths | |
1090 | 48bbf11b | blueswir1 | #if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3)) |
1091 | 5c49b363 | balrog | pc = uc->uc_mcontext.gregs[R15]; |
1092 | 5c49b363 | balrog | #else
|
1093 | 4eee57f5 | balrog | pc = uc->uc_mcontext.arm_pc; |
1094 | 5c49b363 | balrog | #endif
|
1095 | 8c6939c0 | bellard | /* XXX: compute is_write */
|
1096 | 8c6939c0 | bellard | is_write = 0;
|
1097 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
1098 | 8c6939c0 | bellard | is_write, |
1099 | f3a9676a | pbrook | &uc->uc_sigmask, puc); |
1100 | 8c6939c0 | bellard | } |
1101 | 8c6939c0 | bellard | |
1102 | 38e584a0 | bellard | #elif defined(__mc68000)
|
1103 | 38e584a0 | bellard | |
1104 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
1105 | 38e584a0 | bellard | void *puc)
|
1106 | 38e584a0 | bellard | { |
1107 | 5a7b542b | ths | siginfo_t *info = pinfo; |
1108 | 38e584a0 | bellard | struct ucontext *uc = puc;
|
1109 | 38e584a0 | bellard | unsigned long pc; |
1110 | 38e584a0 | bellard | int is_write;
|
1111 | 3b46e624 | ths | |
1112 | 38e584a0 | bellard | pc = uc->uc_mcontext.gregs[16];
|
1113 | 38e584a0 | bellard | /* XXX: compute is_write */
|
1114 | 38e584a0 | bellard | is_write = 0;
|
1115 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
1116 | 38e584a0 | bellard | is_write, |
1117 | bf3e8bf1 | bellard | &uc->uc_sigmask, puc); |
1118 | 38e584a0 | bellard | } |
1119 | 38e584a0 | bellard | |
1120 | b8076a74 | bellard | #elif defined(__ia64)
|
1121 | b8076a74 | bellard | |
1122 | b8076a74 | bellard | #ifndef __ISR_VALID
|
1123 | b8076a74 | bellard | /* This ought to be in <bits/siginfo.h>... */
|
1124 | b8076a74 | bellard | # define __ISR_VALID 1 |
1125 | b8076a74 | bellard | #endif
|
1126 | b8076a74 | bellard | |
1127 | 5a7b542b | ths | int cpu_signal_handler(int host_signum, void *pinfo, void *puc) |
1128 | b8076a74 | bellard | { |
1129 | 5a7b542b | ths | siginfo_t *info = pinfo; |
1130 | b8076a74 | bellard | struct ucontext *uc = puc;
|
1131 | b8076a74 | bellard | unsigned long ip; |
1132 | b8076a74 | bellard | int is_write = 0; |
1133 | b8076a74 | bellard | |
1134 | b8076a74 | bellard | ip = uc->uc_mcontext.sc_ip; |
1135 | b8076a74 | bellard | switch (host_signum) {
|
1136 | b8076a74 | bellard | case SIGILL:
|
1137 | b8076a74 | bellard | case SIGFPE:
|
1138 | b8076a74 | bellard | case SIGSEGV:
|
1139 | b8076a74 | bellard | case SIGBUS:
|
1140 | b8076a74 | bellard | case SIGTRAP:
|
1141 | fd4a43e4 | bellard | if (info->si_code && (info->si_segvflags & __ISR_VALID))
|
1142 | b8076a74 | bellard | /* ISR.W (write-access) is bit 33: */
|
1143 | b8076a74 | bellard | is_write = (info->si_isr >> 33) & 1; |
1144 | b8076a74 | bellard | break;
|
1145 | b8076a74 | bellard | |
1146 | b8076a74 | bellard | default:
|
1147 | b8076a74 | bellard | break;
|
1148 | b8076a74 | bellard | } |
1149 | b8076a74 | bellard | return handle_cpu_signal(ip, (unsigned long)info->si_addr, |
1150 | b8076a74 | bellard | is_write, |
1151 | 60e99246 | Aurelien Jarno | (sigset_t *)&uc->uc_sigmask, puc); |
1152 | b8076a74 | bellard | } |
1153 | b8076a74 | bellard | |
1154 | 90cb9493 | bellard | #elif defined(__s390__)
|
1155 | 90cb9493 | bellard | |
1156 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
1157 | 90cb9493 | bellard | void *puc)
|
1158 | 90cb9493 | bellard | { |
1159 | 5a7b542b | ths | siginfo_t *info = pinfo; |
1160 | 90cb9493 | bellard | struct ucontext *uc = puc;
|
1161 | 90cb9493 | bellard | unsigned long pc; |
1162 | 6a1621b9 | Richard Henderson | uint16_t *pinsn; |
1163 | 6a1621b9 | Richard Henderson | int is_write = 0; |
1164 | 3b46e624 | ths | |
1165 | 90cb9493 | bellard | pc = uc->uc_mcontext.psw.addr; |
1166 | 6a1621b9 | Richard Henderson | |
1167 | 6a1621b9 | Richard Henderson | /* ??? On linux, the non-rt signal handler has 4 (!) arguments instead
|
1168 | 6a1621b9 | Richard Henderson | of the normal 2 arguments. The 3rd argument contains the "int_code"
|
1169 | 6a1621b9 | Richard Henderson | from the hardware which does in fact contain the is_write value.
|
1170 | 6a1621b9 | Richard Henderson | The rt signal handler, as far as I can tell, does not give this value
|
1171 | 6a1621b9 | Richard Henderson | at all. Not that we could get to it from here even if it were. */
|
1172 | 6a1621b9 | Richard Henderson | /* ??? This is not even close to complete, since it ignores all
|
1173 | 6a1621b9 | Richard Henderson | of the read-modify-write instructions. */
|
1174 | 6a1621b9 | Richard Henderson | pinsn = (uint16_t *)pc; |
1175 | 6a1621b9 | Richard Henderson | switch (pinsn[0] >> 8) { |
1176 | 6a1621b9 | Richard Henderson | case 0x50: /* ST */ |
1177 | 6a1621b9 | Richard Henderson | case 0x42: /* STC */ |
1178 | 6a1621b9 | Richard Henderson | case 0x40: /* STH */ |
1179 | 6a1621b9 | Richard Henderson | is_write = 1;
|
1180 | 6a1621b9 | Richard Henderson | break;
|
1181 | 6a1621b9 | Richard Henderson | case 0xc4: /* RIL format insns */ |
1182 | 6a1621b9 | Richard Henderson | switch (pinsn[0] & 0xf) { |
1183 | 6a1621b9 | Richard Henderson | case 0xf: /* STRL */ |
1184 | 6a1621b9 | Richard Henderson | case 0xb: /* STGRL */ |
1185 | 6a1621b9 | Richard Henderson | case 0x7: /* STHRL */ |
1186 | 6a1621b9 | Richard Henderson | is_write = 1;
|
1187 | 6a1621b9 | Richard Henderson | } |
1188 | 6a1621b9 | Richard Henderson | break;
|
1189 | 6a1621b9 | Richard Henderson | case 0xe3: /* RXY format insns */ |
1190 | 6a1621b9 | Richard Henderson | switch (pinsn[2] & 0xff) { |
1191 | 6a1621b9 | Richard Henderson | case 0x50: /* STY */ |
1192 | 6a1621b9 | Richard Henderson | case 0x24: /* STG */ |
1193 | 6a1621b9 | Richard Henderson | case 0x72: /* STCY */ |
1194 | 6a1621b9 | Richard Henderson | case 0x70: /* STHY */ |
1195 | 6a1621b9 | Richard Henderson | case 0x8e: /* STPQ */ |
1196 | 6a1621b9 | Richard Henderson | case 0x3f: /* STRVH */ |
1197 | 6a1621b9 | Richard Henderson | case 0x3e: /* STRV */ |
1198 | 6a1621b9 | Richard Henderson | case 0x2f: /* STRVG */ |
1199 | 6a1621b9 | Richard Henderson | is_write = 1;
|
1200 | 6a1621b9 | Richard Henderson | } |
1201 | 6a1621b9 | Richard Henderson | break;
|
1202 | 6a1621b9 | Richard Henderson | } |
1203 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
1204 | c4b89d18 | ths | is_write, &uc->uc_sigmask, puc); |
1205 | c4b89d18 | ths | } |
1206 | c4b89d18 | ths | |
1207 | c4b89d18 | ths | #elif defined(__mips__)
|
1208 | c4b89d18 | ths | |
1209 | 5fafdf24 | ths | int cpu_signal_handler(int host_signum, void *pinfo, |
1210 | c4b89d18 | ths | void *puc)
|
1211 | c4b89d18 | ths | { |
1212 | 9617efe8 | ths | siginfo_t *info = pinfo; |
1213 | c4b89d18 | ths | struct ucontext *uc = puc;
|
1214 | c4b89d18 | ths | greg_t pc = uc->uc_mcontext.pc; |
1215 | c4b89d18 | ths | int is_write;
|
1216 | 3b46e624 | ths | |
1217 | c4b89d18 | ths | /* XXX: compute is_write */
|
1218 | c4b89d18 | ths | is_write = 0;
|
1219 | 5fafdf24 | ths | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
1220 | c4b89d18 | ths | is_write, &uc->uc_sigmask, puc); |
1221 | 90cb9493 | bellard | } |
1222 | 90cb9493 | bellard | |
1223 | f54b3f92 | aurel32 | #elif defined(__hppa__)
|
1224 | f54b3f92 | aurel32 | |
1225 | f54b3f92 | aurel32 | int cpu_signal_handler(int host_signum, void *pinfo, |
1226 | f54b3f92 | aurel32 | void *puc)
|
1227 | f54b3f92 | aurel32 | { |
1228 | f54b3f92 | aurel32 | struct siginfo *info = pinfo;
|
1229 | f54b3f92 | aurel32 | struct ucontext *uc = puc;
|
1230 | f57040be | Richard Henderson | unsigned long pc = uc->uc_mcontext.sc_iaoq[0]; |
1231 | f57040be | Richard Henderson | uint32_t insn = *(uint32_t *)pc; |
1232 | f57040be | Richard Henderson | int is_write = 0; |
1233 | f57040be | Richard Henderson | |
1234 | f57040be | Richard Henderson | /* XXX: need kernel patch to get write flag faster. */
|
1235 | f57040be | Richard Henderson | switch (insn >> 26) { |
1236 | f57040be | Richard Henderson | case 0x1a: /* STW */ |
1237 | f57040be | Richard Henderson | case 0x19: /* STH */ |
1238 | f57040be | Richard Henderson | case 0x18: /* STB */ |
1239 | f57040be | Richard Henderson | case 0x1b: /* STWM */ |
1240 | f57040be | Richard Henderson | is_write = 1;
|
1241 | f57040be | Richard Henderson | break;
|
1242 | f57040be | Richard Henderson | |
1243 | f57040be | Richard Henderson | case 0x09: /* CSTWX, FSTWX, FSTWS */ |
1244 | f57040be | Richard Henderson | case 0x0b: /* CSTDX, FSTDX, FSTDS */ |
1245 | f57040be | Richard Henderson | /* Distinguish from coprocessor load ... */
|
1246 | f57040be | Richard Henderson | is_write = (insn >> 9) & 1; |
1247 | f57040be | Richard Henderson | break;
|
1248 | f57040be | Richard Henderson | |
1249 | f57040be | Richard Henderson | case 0x03: |
1250 | f57040be | Richard Henderson | switch ((insn >> 6) & 15) { |
1251 | f57040be | Richard Henderson | case 0xa: /* STWS */ |
1252 | f57040be | Richard Henderson | case 0x9: /* STHS */ |
1253 | f57040be | Richard Henderson | case 0x8: /* STBS */ |
1254 | f57040be | Richard Henderson | case 0xe: /* STWAS */ |
1255 | f57040be | Richard Henderson | case 0xc: /* STBYS */ |
1256 | f57040be | Richard Henderson | is_write = 1;
|
1257 | f57040be | Richard Henderson | } |
1258 | f57040be | Richard Henderson | break;
|
1259 | f57040be | Richard Henderson | } |
1260 | f54b3f92 | aurel32 | |
1261 | f54b3f92 | aurel32 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
1262 | f57040be | Richard Henderson | is_write, &uc->uc_sigmask, puc); |
1263 | f54b3f92 | aurel32 | } |
1264 | f54b3f92 | aurel32 | |
1265 | 9de5e440 | bellard | #else
|
1266 | 2b413144 | bellard | |
1267 | 3fb2ded1 | bellard | #error host CPU specific signal handler needed
|
1268 | 2b413144 | bellard | |
1269 | 9de5e440 | bellard | #endif
|
1270 | 67b915a5 | bellard | |
1271 | 67b915a5 | bellard | #endif /* !defined(CONFIG_SOFTMMU) */ |