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
|
/*
* Helpers for loads and stores
*
* Copyright (c) 2007 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu.h"
#include "helper.h"
/* Softmmu support */
#ifndef CONFIG_USER_ONLY
uint64_t helper_ldl_phys(CPUAlphaState *env, uint64_t p)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
return (int32_t)ldl_phys(cs->as, p);
}
uint64_t helper_ldq_phys(CPUAlphaState *env, uint64_t p)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
return ldq_phys(cs->as, p);
}
uint64_t helper_ldl_l_phys(CPUAlphaState *env, uint64_t p)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
env->lock_addr = p;
return env->lock_value = (int32_t)ldl_phys(cs->as, p);
}
uint64_t helper_ldq_l_phys(CPUAlphaState *env, uint64_t p)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
env->lock_addr = p;
return env->lock_value = ldq_phys(cs->as, p);
}
void helper_stl_phys(CPUAlphaState *env, uint64_t p, uint64_t v)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
stl_phys(cs->as, p, v);
}
void helper_stq_phys(CPUAlphaState *env, uint64_t p, uint64_t v)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
stq_phys(cs->as, p, v);
}
uint64_t helper_stl_c_phys(CPUAlphaState *env, uint64_t p, uint64_t v)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
uint64_t ret = 0;
if (p == env->lock_addr) {
int32_t old = ldl_phys(cs->as, p);
if (old == (int32_t)env->lock_value) {
stl_phys(cs->as, p, v);
ret = 1;
}
}
env->lock_addr = -1;
return ret;
}
uint64_t helper_stq_c_phys(CPUAlphaState *env, uint64_t p, uint64_t v)
{
CPUState *cs = CPU(alpha_env_get_cpu(env));
uint64_t ret = 0;
if (p == env->lock_addr) {
uint64_t old = ldq_phys(cs->as, p);
if (old == env->lock_value) {
stq_phys(cs->as, p, v);
ret = 1;
}
}
env->lock_addr = -1;
return ret;
}
static void do_unaligned_access(CPUAlphaState *env, target_ulong addr,
int is_write, int is_user, uintptr_t retaddr)
{
AlphaCPU *cpu = alpha_env_get_cpu(env);
CPUState *cs = CPU(cpu);
uint64_t pc;
uint32_t insn;
if (retaddr) {
cpu_restore_state(env, retaddr);
}
pc = env->pc;
insn = cpu_ldl_code(env, pc);
env->trap_arg0 = addr;
env->trap_arg1 = insn >> 26; /* opcode */
env->trap_arg2 = (insn >> 21) & 31; /* dest regno */
cs->exception_index = EXCP_UNALIGN;
env->error_code = 0;
cpu_loop_exit(cs);
}
void alpha_cpu_unassigned_access(CPUState *cs, hwaddr addr,
bool is_write, bool is_exec, int unused,
unsigned size)
{
AlphaCPU *cpu = ALPHA_CPU(cs);
CPUAlphaState *env = &cpu->env;
env->trap_arg0 = addr;
env->trap_arg1 = is_write ? 1 : 0;
dynamic_excp(env, 0, EXCP_MCHK, 0);
}
#include "exec/softmmu_exec.h"
#define MMUSUFFIX _mmu
#define ALIGNED_ONLY
#define SHIFT 0
#include "exec/softmmu_template.h"
#define SHIFT 1
#include "exec/softmmu_template.h"
#define SHIFT 2
#include "exec/softmmu_template.h"
#define SHIFT 3
#include "exec/softmmu_template.h"
/* 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) */
/* XXX: fix it to restore all registers */
void tlb_fill(CPUState *cs, target_ulong addr, int is_write,
int mmu_idx, uintptr_t retaddr)
{
int ret;
ret = alpha_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
if (unlikely(ret != 0)) {
AlphaCPU *cpu = ALPHA_CPU(cs);
CPUAlphaState *env = &cpu->env;
if (retaddr) {
cpu_restore_state(env, retaddr);
}
/* Exception index and error code are already set */
cpu_loop_exit(cs);
}
}
#endif /* CONFIG_USER_ONLY */
|
