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
|
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/helper-proto.h"
#include "qemu/host-utils.h"
#include "hw/lm32/lm32_pic.h"
#include "hw/char/lm32_juart.h"
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/sysemu.h"
#endif
#if !defined(CONFIG_USER_ONLY)
void raise_exception(CPULM32State *env, int index)
{
CPUState *cs = CPU(lm32_env_get_cpu(env));
cs->exception_index = index;
cpu_loop_exit(cs);
}
void HELPER(raise_exception)(CPULM32State *env, uint32_t index)
{
raise_exception(env, index);
}
void HELPER(hlt)(CPULM32State *env)
{
CPUState *cs = CPU(lm32_env_get_cpu(env));
cs->halted = 1;
cs->exception_index = EXCP_HLT;
cpu_loop_exit(cs);
}
void HELPER(ill)(CPULM32State *env)
{
#ifndef CONFIG_USER_ONLY
CPUState *cs = CPU(lm32_env_get_cpu(env));
fprintf(stderr, "VM paused due to illegal instruction. "
"Connect a debugger or switch to the monitor console "
"to find out more.\n");
vm_stop(RUN_STATE_PAUSED);
cs->halted = 1;
raise_exception(env, EXCP_HALTED);
#endif
}
void HELPER(wcsr_bp)(CPULM32State *env, uint32_t bp, uint32_t idx)
{
uint32_t addr = bp & ~1;
assert(idx < 4);
env->bp[idx] = bp;
lm32_breakpoint_remove(env, idx);
if (bp & 1) {
lm32_breakpoint_insert(env, idx, addr);
}
}
void HELPER(wcsr_wp)(CPULM32State *env, uint32_t wp, uint32_t idx)
{
lm32_wp_t wp_type;
assert(idx < 4);
env->wp[idx] = wp;
wp_type = lm32_wp_type(env->dc, idx);
lm32_watchpoint_remove(env, idx);
if (wp_type != LM32_WP_DISABLED) {
lm32_watchpoint_insert(env, idx, wp, wp_type);
}
}
void HELPER(wcsr_dc)(CPULM32State *env, uint32_t dc)
{
uint32_t old_dc;
int i;
lm32_wp_t old_type;
lm32_wp_t new_type;
old_dc = env->dc;
env->dc = dc;
for (i = 0; i < 4; i++) {
old_type = lm32_wp_type(old_dc, i);
new_type = lm32_wp_type(dc, i);
if (old_type != new_type) {
lm32_watchpoint_remove(env, i);
if (new_type != LM32_WP_DISABLED) {
lm32_watchpoint_insert(env, i, env->wp[i], new_type);
}
}
}
}
void HELPER(wcsr_im)(CPULM32State *env, uint32_t im)
{
lm32_pic_set_im(env->pic_state, im);
}
void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im)
{
lm32_pic_set_ip(env->pic_state, im);
}
void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx)
{
lm32_juart_set_jtx(env->juart_state, jtx);
}
void HELPER(wcsr_jrx)(CPULM32State *env, uint32_t jrx)
{
lm32_juart_set_jrx(env->juart_state, jrx);
}
uint32_t HELPER(rcsr_im)(CPULM32State *env)
{
return lm32_pic_get_im(env->pic_state);
}
uint32_t HELPER(rcsr_ip)(CPULM32State *env)
{
return lm32_pic_get_ip(env->pic_state);
}
uint32_t HELPER(rcsr_jtx)(CPULM32State *env)
{
return lm32_juart_get_jtx(env->juart_state);
}
uint32_t HELPER(rcsr_jrx)(CPULM32State *env)
{
return lm32_juart_get_jrx(env->juart_state);
}
/* Try to fill the TLB and return an exception if error. If retaddr is
* NULL, it means that the function was called in C code (i.e. not
* from generated code or from helper.c)
*/
void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr)
{
int ret;
ret = lm32_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx);
if (unlikely(ret)) {
if (retaddr) {
/* now we have a real cpu fault */
cpu_restore_state(cs, retaddr);
}
cpu_loop_exit(cs);
}
}
#endif
|
