target/ppc/monitor.c

   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
  32 static target_long monitor_get_ccr(Monitor *mon, const struct MonitorDef *md,
  33                                    int val)
  34 {
  35     CPUArchState *env = mon_get_cpu_env(mon);
  36     unsigned int u;
  37     int i;
  38
  39     u = 0;
  40     for (i = 0; i < 8; i++) {
  41         u |= env->crf[i] << (32 - (4 * (i + 1)));
  42     }
  43
  44     return u;
  45 }
  46
  47 static target_long monitor_get_decr(Monitor *mon, const struct MonitorDef *md,
  48                                     int val)
  49 {
  50     CPUArchState *env = mon_get_cpu_env(mon);
  51     return cpu_ppc_load_decr(env);
  52 }
  53
  54 static target_long monitor_get_tbu(Monitor *mon, const struct MonitorDef *md,
  55                                    int val)
  56 {
  57     CPUArchState *env = mon_get_cpu_env(mon);
  58     return cpu_ppc_load_tbu(env);
  59 }
  60
  61 static target_long monitor_get_tbl(Monitor *mon, const struct MonitorDef *md,
  62                                    int val)
  63 {
  64     CPUArchState *env = mon_get_cpu_env(mon);
  65     return cpu_ppc_load_tbl(env);
  66 }
  67
  68 void hmp_info_tlb(Monitor *mon, const QDict *qdict)
  69 {
  70     CPUArchState *env1 = mon_get_cpu_env(mon);
  71
  72     if (!env1) {
  73         monitor_printf(mon, "No CPU available\n");
  74         return;
  75     }
  76     dump_mmu(env1);
  77 }
  78
  79 const MonitorDef monitor_defs[] = {
  80     { "fpscr", offsetof(CPUPPCState, fpscr) },
  81     /* Next instruction pointer */
  82     { "nip|pc", offsetof(CPUPPCState, nip) },
  83     { "lr", offsetof(CPUPPCState, lr) },
  84     { "ctr", offsetof(CPUPPCState, ctr) },
  85     { "decr", 0, &monitor_get_decr, },
  86     { "ccr|cr", 0, &monitor_get_ccr, },
  87     /* Machine state register */
  88     { "xer", offsetof(CPUPPCState, xer) },
  89     { "msr", offsetof(CPUPPCState, msr) },
  90     { "tbu", 0, &monitor_get_tbu, },
  91     { "tbl", 0, &monitor_get_tbl, },
  92     { NULL },
  93 };
  94
  95 const MonitorDef *target_monitor_defs(void)
  96 {
  97     return monitor_defs;
  98 }
  99
 100 static int ppc_cpu_get_reg_num(const char *numstr, int maxnum, int *pregnum)
 101 {
 102     int regnum;
 103     char *endptr = NULL;
 104
 105     if (!*numstr) {
 106         return false;
 107     }
 108
 109     regnum = strtoul(numstr, &endptr, 10);
 110     if (*endptr || (regnum >= maxnum)) {
 111         return false;
 112     }
 113     *pregnum = regnum;
 114
 115     return true;
 116 }
 117
 118 int target_get_monitor_def(CPUState *cs, const char *name, uint64_t *pval)
 119 {
 120     int i, regnum;
 121     PowerPCCPU *cpu = POWERPC_CPU(cs);
 122     CPUPPCState *env = &cpu->env;
 123
 124     /* General purpose registers */
 125     if ((qemu_tolower(name[0]) == 'r') &&
 126         ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->gpr), &regnum)) {
 127         *pval = env->gpr[regnum];
 128         return 0;
 129     }
 130
 131     /* Floating point registers */
 132     if ((qemu_tolower(name[0]) == 'f') &&
 133         ppc_cpu_get_reg_num(name + 1, 32, &regnum)) {
 134         *pval = *cpu_fpr_ptr(env, regnum);
 135         return 0;
 136     }
 137
 138     /* Special purpose registers */
 139     for (i = 0; i < ARRAY_SIZE(env->spr_cb); ++i) {
 140         ppc_spr_t *spr = &env->spr_cb[i];
 141
 142         if (spr->name && (strcasecmp(name, spr->name) == 0)) {
 143             *pval = env->spr[i];
 144             return 0;
 145         }
 146     }
 147
 148     /* Segment registers */
 149 #if !defined(CONFIG_USER_ONLY)
 150     if ((strncasecmp(name, "sr", 2) == 0) &&
 151         ppc_cpu_get_reg_num(name + 2, ARRAY_SIZE(env->sr), &regnum)) {
 152         *pval = env->sr[regnum];
 153         return 0;
 154     }
 155 #endif
 156
 157     return -EINVAL;
 158 }