4 * Copyright (c) 2015 Chen Gang
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see
18 * <http://www.gnu.org/licenses/lgpl-2.1.html>
21 #include "qemu/osdep.h"
22 #include "qapi/error.h"
24 #include "qemu-common.h"
25 #include "hw/qdev-properties.h"
26 #include "migration/vmstate.h"
27 #include "linux-user/syscall_defs.h"
28 #include "exec/exec-all.h"
30 static void tilegx_cpu_dump_state(CPUState
*cs
, FILE *f
,
31 fprintf_function cpu_fprintf
, int flags
)
33 static const char * const reg_names
[TILEGX_R_COUNT
] = {
34 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
35 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
36 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
37 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
38 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
39 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
40 "r48", "r49", "r50", "r51", "bp", "tp", "sp", "lr"
43 TileGXCPU
*cpu
= TILEGX_CPU(cs
);
44 CPUTLGState
*env
= &cpu
->env
;
47 for (i
= 0; i
< TILEGX_R_COUNT
; i
++) {
48 cpu_fprintf(f
, "%-4s" TARGET_FMT_lx
"%s",
49 reg_names
[i
], env
->regs
[i
],
50 (i
% 4) == 3 ? "\n" : " ");
52 cpu_fprintf(f
, "PC " TARGET_FMT_lx
" CEX " TARGET_FMT_lx
"\n\n",
53 env
->pc
, env
->spregs
[TILEGX_SPR_CMPEXCH
]);
56 TileGXCPU
*cpu_tilegx_init(const char *cpu_model
)
60 cpu
= TILEGX_CPU(object_new(TYPE_TILEGX_CPU
));
62 object_property_set_bool(OBJECT(cpu
), true, "realized", NULL
);
67 static void tilegx_cpu_set_pc(CPUState
*cs
, vaddr value
)
69 TileGXCPU
*cpu
= TILEGX_CPU(cs
);
74 static bool tilegx_cpu_has_work(CPUState
*cs
)
79 static void tilegx_cpu_reset(CPUState
*s
)
81 TileGXCPU
*cpu
= TILEGX_CPU(s
);
82 TileGXCPUClass
*tcc
= TILEGX_CPU_GET_CLASS(cpu
);
83 CPUTLGState
*env
= &cpu
->env
;
87 memset(env
, 0, sizeof(CPUTLGState
));
91 static void tilegx_cpu_realizefn(DeviceState
*dev
, Error
**errp
)
93 CPUState
*cs
= CPU(dev
);
94 TileGXCPUClass
*tcc
= TILEGX_CPU_GET_CLASS(dev
);
99 tcc
->parent_realize(dev
, errp
);
102 static void tilegx_cpu_initfn(Object
*obj
)
104 CPUState
*cs
= CPU(obj
);
105 TileGXCPU
*cpu
= TILEGX_CPU(obj
);
106 CPUTLGState
*env
= &cpu
->env
;
107 static bool tcg_initialized
;
110 cpu_exec_init(cs
, &error_abort
);
112 if (tcg_enabled() && !tcg_initialized
) {
113 tcg_initialized
= true;
118 static void tilegx_cpu_do_interrupt(CPUState
*cs
)
120 cs
->exception_index
= -1;
123 static int tilegx_cpu_handle_mmu_fault(CPUState
*cs
, vaddr address
, int rw
,
126 TileGXCPU
*cpu
= TILEGX_CPU(cs
);
128 /* The sigcode field will be filled in by do_signal in main.c. */
129 cs
->exception_index
= TILEGX_EXCP_SIGNAL
;
130 cpu
->env
.excaddr
= address
;
131 cpu
->env
.signo
= TARGET_SIGSEGV
;
132 cpu
->env
.sigcode
= 0;
137 static bool tilegx_cpu_exec_interrupt(CPUState
*cs
, int interrupt_request
)
139 if (interrupt_request
& CPU_INTERRUPT_HARD
) {
140 tilegx_cpu_do_interrupt(cs
);
146 static void tilegx_cpu_class_init(ObjectClass
*oc
, void *data
)
148 DeviceClass
*dc
= DEVICE_CLASS(oc
);
149 CPUClass
*cc
= CPU_CLASS(oc
);
150 TileGXCPUClass
*tcc
= TILEGX_CPU_CLASS(oc
);
152 tcc
->parent_realize
= dc
->realize
;
153 dc
->realize
= tilegx_cpu_realizefn
;
155 tcc
->parent_reset
= cc
->reset
;
156 cc
->reset
= tilegx_cpu_reset
;
158 cc
->has_work
= tilegx_cpu_has_work
;
159 cc
->do_interrupt
= tilegx_cpu_do_interrupt
;
160 cc
->cpu_exec_interrupt
= tilegx_cpu_exec_interrupt
;
161 cc
->dump_state
= tilegx_cpu_dump_state
;
162 cc
->set_pc
= tilegx_cpu_set_pc
;
163 cc
->handle_mmu_fault
= tilegx_cpu_handle_mmu_fault
;
164 cc
->gdb_num_core_regs
= 0;
167 * Reason: tilegx_cpu_initfn() calls cpu_exec_init(), which saves
168 * the object in cpus -> dangling pointer after final
171 dc
->cannot_destroy_with_object_finalize_yet
= true;
174 static const TypeInfo tilegx_cpu_type_info
= {
175 .name
= TYPE_TILEGX_CPU
,
177 .instance_size
= sizeof(TileGXCPU
),
178 .instance_init
= tilegx_cpu_initfn
,
179 .class_size
= sizeof(TileGXCPUClass
),
180 .class_init
= tilegx_cpu_class_init
,
183 static void tilegx_cpu_register_types(void)
185 type_register_static(&tilegx_cpu_type_info
);
188 type_init(tilegx_cpu_register_types
)