root / target-xtensa / cpu.c @ 5b50e790
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1 | a4633e16 | Andreas Färber | /*
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2 | a4633e16 | Andreas Färber | * QEMU Xtensa CPU
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3 | a4633e16 | Andreas Färber | *
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4 | 5087a72c | Andreas Färber | * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
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5 | a4633e16 | Andreas Färber | * Copyright (c) 2012 SUSE LINUX Products GmbH
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6 | a4633e16 | Andreas Färber | * All rights reserved.
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7 | a4633e16 | Andreas Färber | *
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8 | a4633e16 | Andreas Färber | * Redistribution and use in source and binary forms, with or without
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9 | a4633e16 | Andreas Färber | * modification, are permitted provided that the following conditions are met:
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10 | a4633e16 | Andreas Färber | * * Redistributions of source code must retain the above copyright
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11 | a4633e16 | Andreas Färber | * notice, this list of conditions and the following disclaimer.
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12 | a4633e16 | Andreas Färber | * * Redistributions in binary form must reproduce the above copyright
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13 | a4633e16 | Andreas Färber | * notice, this list of conditions and the following disclaimer in the
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14 | a4633e16 | Andreas Färber | * documentation and/or other materials provided with the distribution.
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15 | a4633e16 | Andreas Färber | * * Neither the name of the Open Source and Linux Lab nor the
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16 | a4633e16 | Andreas Färber | * names of its contributors may be used to endorse or promote products
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17 | a4633e16 | Andreas Färber | * derived from this software without specific prior written permission.
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18 | a4633e16 | Andreas Färber | *
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19 | a4633e16 | Andreas Färber | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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20 | a4633e16 | Andreas Färber | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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21 | a4633e16 | Andreas Färber | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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22 | a4633e16 | Andreas Färber | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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23 | a4633e16 | Andreas Färber | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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24 | a4633e16 | Andreas Färber | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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25 | a4633e16 | Andreas Färber | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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26 | a4633e16 | Andreas Färber | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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27 | a4633e16 | Andreas Färber | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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28 | a4633e16 | Andreas Färber | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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29 | a4633e16 | Andreas Färber | */
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30 | a4633e16 | Andreas Färber | |
31 | 15be3171 | Andreas Färber | #include "cpu.h" |
32 | a4633e16 | Andreas Färber | #include "qemu-common.h" |
33 | 004a5690 | Andreas Färber | #include "migration/vmstate.h" |
34 | a4633e16 | Andreas Färber | |
35 | a4633e16 | Andreas Färber | |
36 | f45748f1 | Andreas Färber | static void xtensa_cpu_set_pc(CPUState *cs, vaddr value) |
37 | f45748f1 | Andreas Färber | { |
38 | f45748f1 | Andreas Färber | XtensaCPU *cpu = XTENSA_CPU(cs); |
39 | f45748f1 | Andreas Färber | |
40 | f45748f1 | Andreas Färber | cpu->env.pc = value; |
41 | f45748f1 | Andreas Färber | } |
42 | f45748f1 | Andreas Färber | |
43 | a4633e16 | Andreas Färber | /* CPUClass::reset() */
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44 | a4633e16 | Andreas Färber | static void xtensa_cpu_reset(CPUState *s) |
45 | a4633e16 | Andreas Färber | { |
46 | a4633e16 | Andreas Färber | XtensaCPU *cpu = XTENSA_CPU(s); |
47 | a4633e16 | Andreas Färber | XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(cpu); |
48 | a4633e16 | Andreas Färber | CPUXtensaState *env = &cpu->env; |
49 | a4633e16 | Andreas Färber | |
50 | a4633e16 | Andreas Färber | xcc->parent_reset(s); |
51 | a4633e16 | Andreas Färber | |
52 | 5087a72c | Andreas Färber | env->exception_taken = 0;
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53 | 5087a72c | Andreas Färber | env->pc = env->config->exception_vector[EXC_RESET]; |
54 | 5087a72c | Andreas Färber | env->sregs[LITBASE] &= ~1;
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55 | 5087a72c | Andreas Färber | env->sregs[PS] = xtensa_option_enabled(env->config, |
56 | 5087a72c | Andreas Färber | XTENSA_OPTION_INTERRUPT) ? 0x1f : 0x10; |
57 | 5087a72c | Andreas Färber | env->sregs[VECBASE] = env->config->vecbase; |
58 | 5087a72c | Andreas Färber | env->sregs[IBREAKENABLE] = 0;
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59 | 4e41d2f5 | Max Filippov | env->sregs[CACHEATTR] = 0x22222222;
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60 | fcc803d1 | Max Filippov | env->sregs[ATOMCTL] = xtensa_option_enabled(env->config, |
61 | fcc803d1 | Max Filippov | XTENSA_OPTION_ATOMCTL) ? 0x28 : 0x15; |
62 | 5087a72c | Andreas Färber | |
63 | 5087a72c | Andreas Färber | env->pending_irq_level = 0;
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64 | 5087a72c | Andreas Färber | reset_mmu(env); |
65 | a4633e16 | Andreas Färber | } |
66 | a4633e16 | Andreas Färber | |
67 | 67cce561 | Andreas Färber | static ObjectClass *xtensa_cpu_class_by_name(const char *cpu_model) |
68 | 67cce561 | Andreas Färber | { |
69 | 67cce561 | Andreas Färber | ObjectClass *oc; |
70 | 67cce561 | Andreas Färber | char *typename;
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71 | 67cce561 | Andreas Färber | |
72 | 67cce561 | Andreas Färber | if (cpu_model == NULL) { |
73 | 67cce561 | Andreas Färber | return NULL; |
74 | 67cce561 | Andreas Färber | } |
75 | 67cce561 | Andreas Färber | |
76 | 67cce561 | Andreas Färber | typename = g_strdup_printf("%s-" TYPE_XTENSA_CPU, cpu_model);
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77 | 67cce561 | Andreas Färber | oc = object_class_by_name(typename); |
78 | 67cce561 | Andreas Färber | g_free(typename); |
79 | 67cce561 | Andreas Färber | if (oc == NULL || !object_class_dynamic_cast(oc, TYPE_XTENSA_CPU) || |
80 | 67cce561 | Andreas Färber | object_class_is_abstract(oc)) { |
81 | 67cce561 | Andreas Färber | return NULL; |
82 | 67cce561 | Andreas Färber | } |
83 | 67cce561 | Andreas Färber | return oc;
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84 | 67cce561 | Andreas Färber | } |
85 | 67cce561 | Andreas Färber | |
86 | 5f6c9643 | Andreas Färber | static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp) |
87 | 5f6c9643 | Andreas Färber | { |
88 | a0e372f0 | Andreas Färber | CPUState *cs = CPU(dev); |
89 | 5f6c9643 | Andreas Färber | XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(dev); |
90 | 5f6c9643 | Andreas Färber | |
91 | a0e372f0 | Andreas Färber | cs->gdb_num_regs = xcc->config->gdb_regmap.num_regs; |
92 | a0e372f0 | Andreas Färber | |
93 | 5f6c9643 | Andreas Färber | xcc->parent_realize(dev, errp); |
94 | 5f6c9643 | Andreas Färber | } |
95 | 5f6c9643 | Andreas Färber | |
96 | e554bbc6 | Andreas Färber | static void xtensa_cpu_initfn(Object *obj) |
97 | e554bbc6 | Andreas Färber | { |
98 | c05efcb1 | Andreas Färber | CPUState *cs = CPU(obj); |
99 | e554bbc6 | Andreas Färber | XtensaCPU *cpu = XTENSA_CPU(obj); |
100 | 67cce561 | Andreas Färber | XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(obj); |
101 | e554bbc6 | Andreas Färber | CPUXtensaState *env = &cpu->env; |
102 | 25733ead | Andreas Färber | static bool tcg_inited; |
103 | e554bbc6 | Andreas Färber | |
104 | c05efcb1 | Andreas Färber | cs->env_ptr = env; |
105 | 67cce561 | Andreas Färber | env->config = xcc->config; |
106 | e554bbc6 | Andreas Färber | cpu_exec_init(env); |
107 | 25733ead | Andreas Färber | |
108 | 25733ead | Andreas Färber | if (tcg_enabled() && !tcg_inited) {
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109 | 25733ead | Andreas Färber | tcg_inited = true;
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110 | 25733ead | Andreas Färber | xtensa_translate_init(); |
111 | 25733ead | Andreas Färber | cpu_set_debug_excp_handler(xtensa_breakpoint_handler); |
112 | 25733ead | Andreas Färber | } |
113 | e554bbc6 | Andreas Färber | } |
114 | e554bbc6 | Andreas Färber | |
115 | 004a5690 | Andreas Färber | static const VMStateDescription vmstate_xtensa_cpu = { |
116 | 004a5690 | Andreas Färber | .name = "cpu",
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117 | 004a5690 | Andreas Färber | .unmigratable = 1,
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118 | 004a5690 | Andreas Färber | }; |
119 | 004a5690 | Andreas Färber | |
120 | a4633e16 | Andreas Färber | static void xtensa_cpu_class_init(ObjectClass *oc, void *data) |
121 | a4633e16 | Andreas Färber | { |
122 | 004a5690 | Andreas Färber | DeviceClass *dc = DEVICE_CLASS(oc); |
123 | a4633e16 | Andreas Färber | CPUClass *cc = CPU_CLASS(oc); |
124 | a4633e16 | Andreas Färber | XtensaCPUClass *xcc = XTENSA_CPU_CLASS(cc); |
125 | a4633e16 | Andreas Färber | |
126 | 5f6c9643 | Andreas Färber | xcc->parent_realize = dc->realize; |
127 | 5f6c9643 | Andreas Färber | dc->realize = xtensa_cpu_realizefn; |
128 | 5f6c9643 | Andreas Färber | |
129 | a4633e16 | Andreas Färber | xcc->parent_reset = cc->reset; |
130 | a4633e16 | Andreas Färber | cc->reset = xtensa_cpu_reset; |
131 | 004a5690 | Andreas Färber | |
132 | 67cce561 | Andreas Färber | cc->class_by_name = xtensa_cpu_class_by_name; |
133 | 97a8ea5a | Andreas Färber | cc->do_interrupt = xtensa_cpu_do_interrupt; |
134 | 878096ee | Andreas Färber | cc->dump_state = xtensa_cpu_dump_state; |
135 | f45748f1 | Andreas Färber | cc->set_pc = xtensa_cpu_set_pc; |
136 | 5b50e790 | Andreas Färber | cc->gdb_read_register = xtensa_cpu_gdb_read_register; |
137 | 5b50e790 | Andreas Färber | cc->gdb_write_register = xtensa_cpu_gdb_write_register; |
138 | 00b941e5 | Andreas Färber | #ifndef CONFIG_USER_ONLY
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139 | 00b941e5 | Andreas Färber | cc->get_phys_page_debug = xtensa_cpu_get_phys_page_debug; |
140 | 00b941e5 | Andreas Färber | #endif
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141 | 004a5690 | Andreas Färber | dc->vmsd = &vmstate_xtensa_cpu; |
142 | a4633e16 | Andreas Färber | } |
143 | a4633e16 | Andreas Färber | |
144 | a4633e16 | Andreas Färber | static const TypeInfo xtensa_cpu_type_info = { |
145 | a4633e16 | Andreas Färber | .name = TYPE_XTENSA_CPU, |
146 | a4633e16 | Andreas Färber | .parent = TYPE_CPU, |
147 | a4633e16 | Andreas Färber | .instance_size = sizeof(XtensaCPU),
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148 | e554bbc6 | Andreas Färber | .instance_init = xtensa_cpu_initfn, |
149 | 67cce561 | Andreas Färber | .abstract = true,
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150 | a4633e16 | Andreas Färber | .class_size = sizeof(XtensaCPUClass),
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151 | a4633e16 | Andreas Färber | .class_init = xtensa_cpu_class_init, |
152 | a4633e16 | Andreas Färber | }; |
153 | a4633e16 | Andreas Färber | |
154 | a4633e16 | Andreas Färber | static void xtensa_cpu_register_types(void) |
155 | a4633e16 | Andreas Färber | { |
156 | a4633e16 | Andreas Färber | type_register_static(&xtensa_cpu_type_info); |
157 | a4633e16 | Andreas Färber | } |
158 | a4633e16 | Andreas Färber | |
159 | a4633e16 | Andreas Färber | type_init(xtensa_cpu_register_types) |