1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/*
* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Open Source and Linux Lab nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CPU_XTENSA_H
#define CPU_XTENSA_H
#define TARGET_LONG_BITS 32
#define ELF_MACHINE EM_XTENSA
#define CPUState struct CPUXtensaState
#include "config.h"
#include "qemu-common.h"
#include "cpu-defs.h"
#define TARGET_HAS_ICE 1
#define NB_MMU_MODES 4
#define TARGET_PHYS_ADDR_SPACE_BITS 32
#define TARGET_VIRT_ADDR_SPACE_BITS 32
#define TARGET_PAGE_BITS 12
enum {
/* Additional instructions */
XTENSA_OPTION_CODE_DENSITY,
XTENSA_OPTION_LOOP,
XTENSA_OPTION_EXTENDED_L32R,
XTENSA_OPTION_16_BIT_IMUL,
XTENSA_OPTION_32_BIT_IMUL,
XTENSA_OPTION_32_BIT_IDIV,
XTENSA_OPTION_MAC16,
XTENSA_OPTION_MISC_OP,
XTENSA_OPTION_COPROCESSOR,
XTENSA_OPTION_BOOLEAN,
XTENSA_OPTION_FP_COPROCESSOR,
XTENSA_OPTION_MP_SYNCHRO,
XTENSA_OPTION_CONDITIONAL_STORE,
/* Interrupts and exceptions */
XTENSA_OPTION_EXCEPTION,
XTENSA_OPTION_RELOCATABLE_VECTOR,
XTENSA_OPTION_UNALIGNED_EXCEPTION,
XTENSA_OPTION_INTERRUPT,
XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT,
XTENSA_OPTION_TIMER_INTERRUPT,
/* Local memory */
XTENSA_OPTION_ICACHE,
XTENSA_OPTION_ICACHE_TEST,
XTENSA_OPTION_ICACHE_INDEX_LOCK,
XTENSA_OPTION_DCACHE,
XTENSA_OPTION_DCACHE_TEST,
XTENSA_OPTION_DCACHE_INDEX_LOCK,
XTENSA_OPTION_IRAM,
XTENSA_OPTION_IROM,
XTENSA_OPTION_DRAM,
XTENSA_OPTION_DROM,
XTENSA_OPTION_XLMI,
XTENSA_OPTION_HW_ALIGNMENT,
XTENSA_OPTION_MEMORY_ECC_PARITY,
/* Memory protection and translation */
XTENSA_OPTION_REGION_PROTECTION,
XTENSA_OPTION_REGION_TRANSLATION,
XTENSA_OPTION_MMU,
/* Other */
XTENSA_OPTION_WINDOWED_REGISTER,
XTENSA_OPTION_PROCESSOR_INTERFACE,
XTENSA_OPTION_MISC_SR,
XTENSA_OPTION_THREAD_POINTER,
XTENSA_OPTION_PROCESSOR_ID,
XTENSA_OPTION_DEBUG,
XTENSA_OPTION_TRACE_PORT,
};
enum {
THREADPTR = 231,
FCR = 232,
FSR = 233,
};
enum {
SAR = 3,
SCOMPARE1 = 12,
PS = 230,
};
#define PS_INTLEVEL 0xf
#define PS_INTLEVEL_SHIFT 0
#define PS_EXCM 0x10
#define PS_UM 0x20
#define PS_RING 0xc0
#define PS_RING_SHIFT 6
#define PS_OWB 0xf00
#define PS_OWB_SHIFT 8
#define PS_CALLINC 0x30000
#define PS_CALLINC_SHIFT 16
#define PS_CALLINC_LEN 2
#define PS_WOE 0x40000
typedef struct XtensaConfig {
const char *name;
uint64_t options;
} XtensaConfig;
typedef struct CPUXtensaState {
const XtensaConfig *config;
uint32_t regs[16];
uint32_t pc;
uint32_t sregs[256];
uint32_t uregs[256];
CPU_COMMON
} CPUXtensaState;
#define cpu_init cpu_xtensa_init
#define cpu_exec cpu_xtensa_exec
#define cpu_gen_code cpu_xtensa_gen_code
#define cpu_signal_handler cpu_xtensa_signal_handler
#define cpu_list xtensa_cpu_list
CPUXtensaState *cpu_xtensa_init(const char *cpu_model);
void xtensa_translate_init(void);
int cpu_xtensa_exec(CPUXtensaState *s);
void do_interrupt(CPUXtensaState *s);
int cpu_xtensa_signal_handler(int host_signum, void *pinfo, void *puc);
void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf);
#define XTENSA_OPTION_BIT(opt) (((uint64_t)1) << (opt))
static inline bool xtensa_option_enabled(const XtensaConfig *config, int opt)
{
return (config->options & XTENSA_OPTION_BIT(opt)) != 0;
}
static inline int xtensa_get_ring(const CPUState *env)
{
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT;
} else {
return 0;
}
}
static inline int xtensa_get_cring(const CPUState *env)
{
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU) &&
(env->sregs[PS] & PS_EXCM) == 0) {
return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT;
} else {
return 0;
}
}
/* MMU modes definitions */
#define MMU_MODE0_SUFFIX _ring0
#define MMU_MODE1_SUFFIX _ring1
#define MMU_MODE2_SUFFIX _ring2
#define MMU_MODE3_SUFFIX _ring3
static inline int cpu_mmu_index(CPUState *env)
{
return xtensa_get_cring(env);
}
#define XTENSA_TBFLAG_RING_MASK 0x3
#define XTENSA_TBFLAG_EXCM 0x4
static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
target_ulong *cs_base, int *flags)
{
*pc = env->pc;
*cs_base = 0;
*flags = 0;
*flags |= xtensa_get_ring(env);
if (env->sregs[PS] & PS_EXCM) {
*flags |= XTENSA_TBFLAG_EXCM;
}
}
#include "cpu-all.h"
#include "exec-all.h"
static inline int cpu_has_work(CPUState *env)
{
return 1;
}
static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
{
env->pc = tb->pc;
}
#endif
|
