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(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
  46 static 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
  52 static 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
  58 static 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
  64 void 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
  75 const 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
  91 const MonitorDef *target_monitor_defs(void)
  92 {
  93     return monitor_defs;
  94 }
  95
  96 static 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
 114 int 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), &regnum)) {
 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, &regnum)) {
 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), &regnum)) {
 148         *pval = env->sr[regnum];
 149         return 0;
 150     }
 151 #endif
 152
 153     return -EINVAL;
 154 }