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 #include "qemu/osdep.h"
  25 #include "cpu.h"
  26 #include "monitor/monitor.h"
  27 #include "monitor/hmp-target.h"
  28 #include "hmp.h"
  29
  30 static target_long monitor_get_ccr (const struct MonitorDef *md, int val)
  31 {
  32     CPUArchState *env = mon_get_cpu_env();
  33     unsigned int u;
  34     int i;
  35
  36     u = 0;
  37     for (i = 0; i < 8; i++)
  38         u |= env->crf[i] << (32 - (4 * (i + 1)));
  39
  40     return u;
  41 }
  42
  43 static target_long monitor_get_decr (const struct MonitorDef *md, int val)
  44 {
  45     CPUArchState *env = mon_get_cpu_env();
  46     return cpu_ppc_load_decr(env);
  47 }
  48
  49 static target_long monitor_get_tbu (const struct MonitorDef *md, int val)
  50 {
  51     CPUArchState *env = mon_get_cpu_env();
  52     return cpu_ppc_load_tbu(env);
  53 }
  54
  55 static target_long monitor_get_tbl (const struct MonitorDef *md, int val)
  56 {
  57     CPUArchState *env = mon_get_cpu_env();
  58     return cpu_ppc_load_tbl(env);
  59 }
  60
  61 void hmp_info_tlb(Monitor *mon, const QDict *qdict)
  62 {
  63     CPUArchState *env1 = mon_get_cpu_env();
  64
  65     dump_mmu((FILE*)mon, (fprintf_function)monitor_printf, env1);
  66 }
  67
  68 const MonitorDef monitor_defs[] = {
  69     { "fpscr", offsetof(CPUPPCState, fpscr) },
  70     /* Next instruction pointer */
  71     { "nip|pc", offsetof(CPUPPCState, nip) },
  72     { "lr", offsetof(CPUPPCState, lr) },
  73     { "ctr", offsetof(CPUPPCState, ctr) },
  74     { "decr", 0, &monitor_get_decr, },
  75     { "ccr|cr", 0, &monitor_get_ccr, },
  76     /* Machine state register */
  77     { "xer", offsetof(CPUPPCState, xer) },
  78     { "msr", offsetof(CPUPPCState, msr) },
  79     { "tbu", 0, &monitor_get_tbu, },
  80     { "tbl", 0, &monitor_get_tbl, },
  81     { NULL },
  82 };
  83
  84 const MonitorDef *target_monitor_defs(void)
  85 {
  86     return monitor_defs;
  87 }
  88
  89 static int ppc_cpu_get_reg_num(const char *numstr, int maxnum, int *pregnum)
  90 {
  91     int regnum;
  92     char *endptr = NULL;
  93
  94     if (!*numstr) {
  95         return false;
  96     }
  97
  98     regnum = strtoul(numstr, &endptr, 10);
  99     if (*endptr || (regnum >= maxnum)) {
 100         return false;
 101     }
 102     *pregnum = regnum;
 103
 104     return true;
 105 }
 106
 107 int target_get_monitor_def(CPUState *cs, const char *name, uint64_t *pval)
 108 {
 109     int i, regnum;
 110     PowerPCCPU *cpu = POWERPC_CPU(cs);
 111     CPUPPCState *env = &cpu->env;
 112
 113     /* General purpose registers */
 114     if ((tolower(name[0]) == 'r') &&
 115         ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->gpr), &regnum)) {
 116         *pval = env->gpr[regnum];
 117         return 0;
 118     }
 119
 120     /* Floating point registers */
 121     if ((tolower(name[0]) == 'f') &&
 122         ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->fpr), &regnum)) {
 123         *pval = env->fpr[regnum];
 124         return 0;
 125     }
 126
 127     /* Special purpose registers */
 128     for (i = 0; i < ARRAY_SIZE(env->spr_cb); ++i) {
 129         ppc_spr_t *spr = &env->spr_cb[i];
 130
 131         if (spr->name && (strcasecmp(name, spr->name) == 0)) {
 132             *pval = env->spr[i];
 133             return 0;
 134         }
 135     }
 136
 137     /* Segment registers */
 138 #if !defined(CONFIG_USER_ONLY)
 139     if ((strncasecmp(name, "sr", 2) == 0) &&
 140         ppc_cpu_get_reg_num(name + 2, ARRAY_SIZE(env->sr), &regnum)) {
 141         *pval = env->sr[regnum];
 142         return 0;
 143     }
 144 #endif
 145
 146     return -EINVAL;
 147 }