jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1/*
2 * QEMU monitor
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25#include "qemu/osdep.h"
26#include "cpu.h"
27#include "monitor/monitor.h"
28#include "qemu/ctype.h"
29#include "monitor/hmp-target.h"
30#include "monitor/hmp.h"
31
32static target_long monitor_get_ccr(const struct MonitorDef *md, int val)
33{
34 CPUArchState *env = mon_get_cpu_env();
35 unsigned int u;
36 int i;
37
38 u = 0;
39 for (i = 0; i < 8; i++) {
40 u |= env->crf[i] << (32 - (4 * (i + 1)));
41 }
42
43 return u;
44}
45
46static target_long monitor_get_decr(const struct MonitorDef *md, int val)
47{
48 CPUArchState *env = mon_get_cpu_env();
49 return cpu_ppc_load_decr(env);
50}
51
52static target_long monitor_get_tbu(const struct MonitorDef *md, int val)
53{
54 CPUArchState *env = mon_get_cpu_env();
55 return cpu_ppc_load_tbu(env);
56}
57
58static target_long monitor_get_tbl(const struct MonitorDef *md, int val)
59{
60 CPUArchState *env = mon_get_cpu_env();
61 return cpu_ppc_load_tbl(env);
62}
63
64void hmp_info_tlb(Monitor *mon, const QDict *qdict)
65{
66 CPUArchState *env1 = mon_get_cpu_env();
67
68 if (!env1) {
69 monitor_printf(mon, "No CPU available\n");
70 return;
71 }
72 dump_mmu(env1);
73}
74
75const MonitorDef monitor_defs[] = {
76 { "fpscr", offsetof(CPUPPCState, fpscr) },
77 /* Next instruction pointer */
78 { "nip|pc", offsetof(CPUPPCState, nip) },
79 { "lr", offsetof(CPUPPCState, lr) },
80 { "ctr", offsetof(CPUPPCState, ctr) },
81 { "decr", 0, &monitor_get_decr, },
82 { "ccr|cr", 0, &monitor_get_ccr, },
83 /* Machine state register */
84 { "xer", offsetof(CPUPPCState, xer) },
85 { "msr", offsetof(CPUPPCState, msr) },
86 { "tbu", 0, &monitor_get_tbu, },
87 { "tbl", 0, &monitor_get_tbl, },
88 { NULL },
89};
90
91const MonitorDef *target_monitor_defs(void)
92{
93 return monitor_defs;
94}
95
96static int ppc_cpu_get_reg_num(const char *numstr, int maxnum, int *pregnum)
97{
98 int regnum;
99 char *endptr = NULL;
100
101 if (!*numstr) {
102 return false;
103 }
104
105 regnum = strtoul(numstr, &endptr, 10);
106 if (*endptr || (regnum >= maxnum)) {
107 return false;
108 }
109 *pregnum = regnum;
110
111 return true;
112}
113
114int target_get_monitor_def(CPUState *cs, const char *name, uint64_t *pval)
115{
116 int i, regnum;
117 PowerPCCPU *cpu = POWERPC_CPU(cs);
118 CPUPPCState *env = &cpu->env;
119
120 /* General purpose registers */
121 if ((qemu_tolower(name[0]) == 'r') &&
122 ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->gpr), ®num)) {
123 *pval = env->gpr[regnum];
124 return 0;
125 }
126
127 /* Floating point registers */
128 if ((qemu_tolower(name[0]) == 'f') &&
129 ppc_cpu_get_reg_num(name + 1, 32, ®num)) {
130 *pval = *cpu_fpr_ptr(env, regnum);
131 return 0;
132 }
133
134 /* Special purpose registers */
135 for (i = 0; i < ARRAY_SIZE(env->spr_cb); ++i) {
136 ppc_spr_t *spr = &env->spr_cb[i];
137
138 if (spr->name && (strcasecmp(name, spr->name) == 0)) {
139 *pval = env->spr[i];
140 return 0;
141 }
142 }
143
144 /* Segment registers */
145#if !defined(CONFIG_USER_ONLY)
146 if ((strncasecmp(name, "sr", 2) == 0) &&
147 ppc_cpu_get_reg_num(name + 2, ARRAY_SIZE(env->sr), ®num)) {
148 *pval = env->sr[regnum];
149 return 0;
150 }
151#endif
152
153 return -EINVAL;
154}