riscv/interactive.cc

   1 // See LICENSE for license details.
   2
   3 #include "sim.h"
   4 #include "htif.h"
   5 #include <sys/mman.h>
   6 #include <map>
   7 #include <iostream>
   8 #include <climits>
   9 #include <assert.h>
  10 #include <stdlib.h>
  11
  12 void sim_t::interactive()
  13 {
  14   putchar(':');
  15   char s[128];
  16   std::cin.getline(s,sizeof(s)-1);
  17
  18   char* p = strtok(s," ");
  19   if(!p)
  20   {
  21     interactive_run_noisy(std::string("r"), std::vector<std::string>(1,"1"));
  22     return;
  23   }
  24   std::string cmd = p;
  25
  26   std::vector<std::string> args;
  27   while((p = strtok(NULL," ")))
  28     args.push_back(p);
  29
  30
  31   typedef void (sim_t::*interactive_func)(const std::string&, const std::vector<std::string>&);
  32   std::map<std::string,interactive_func> funcs;
  33
  34   funcs["r"] = &sim_t::interactive_run_noisy;
  35   funcs["rs"] = &sim_t::interactive_run_silent;
  36   funcs["rp"] = &sim_t::interactive_run_proc_noisy;
  37   funcs["rps"] = &sim_t::interactive_run_proc_silent;
  38   funcs["reg"] = &sim_t::interactive_reg;
  39   funcs["fregs"] = &sim_t::interactive_fregs;
  40   funcs["fregd"] = &sim_t::interactive_fregd;
  41   funcs["mem"] = &sim_t::interactive_mem;
  42   funcs["str"] = &sim_t::interactive_str;
  43   funcs["until"] = &sim_t::interactive_until;
  44   funcs["while"] = &sim_t::interactive_until;
  45   funcs["q"] = &sim_t::interactive_quit;
  46
  47   try
  48   {
  49     if(funcs.count(cmd))
  50       (this->*funcs[cmd])(cmd, args);
  51   }
  52   catch(trap_t t) {}
  53 }
  54
  55 void sim_t::interactive_run_noisy(const std::string& cmd, const std::vector<std::string>& args)
  56 {
  57   interactive_run(cmd,args,true);
  58 }
  59
  60 void sim_t::interactive_run_silent(const std::string& cmd, const std::vector<std::string>& args)
  61 {
  62   interactive_run(cmd,args,false);
  63 }
  64
  65 void sim_t::interactive_run(const std::string& cmd, const std::vector<std::string>& args, bool noisy)
  66 {
  67   size_t steps = args.size() ? atoll(args[0].c_str()) : -1;
  68   step(steps, noisy);
  69 }
  70
  71 void sim_t::interactive_run_proc_noisy(const std::string& cmd, const std::vector<std::string>& args)
  72 {
  73   interactive_run_proc(cmd,args,true);
  74 }
  75
  76 void sim_t::interactive_run_proc_silent(const std::string& cmd, const std::vector<std::string>& args)
  77 {
  78   interactive_run_proc(cmd,args,false);
  79 }
  80
  81 void sim_t::interactive_run_proc(const std::string& cmd, const std::vector<std::string>& a, bool noisy)
  82 {
  83   if(a.size() == 0)
  84     return;
  85
  86   int p = atoi(a[0].c_str());
  87   if(p >= (int)num_cores())
  88     return;
  89
  90   size_t steps = a.size() > 1 ? atoll(a[1].c_str()) : -1;
  91   procs[p]->step(steps, noisy);
  92 }
  93
  94 void sim_t::interactive_quit(const std::string& cmd, const std::vector<std::string>& args)
  95 {
  96   exit(0);
  97 }
  98
  99 reg_t sim_t::get_pc(const std::vector<std::string>& args)
 100 {
 101   if(args.size() != 1)
 102     throw trap_illegal_instruction;
 103
 104   int p = atoi(args[0].c_str());
 105   if(p >= (int)num_cores())
 106     throw trap_illegal_instruction;
 107
 108   return procs[p]->pc;
 109 }
 110
 111 reg_t sim_t::get_reg(const std::vector<std::string>& args)
 112 {
 113   if(args.size() != 2)
 114     throw trap_illegal_instruction;
 115
 116   int p = atoi(args[0].c_str());
 117   int r = atoi(args[1].c_str());
 118   if(p >= (int)num_cores() || r >= NXPR)
 119     throw trap_illegal_instruction;
 120
 121   return procs[p]->XPR[r];
 122 }
 123
 124 reg_t sim_t::get_freg(const std::vector<std::string>& args)
 125 {
 126   if(args.size() != 2)
 127     throw trap_illegal_instruction;
 128
 129   int p = atoi(args[0].c_str());
 130   int r = atoi(args[1].c_str());
 131   if(p >= (int)num_cores() || r >= NFPR)
 132     throw trap_illegal_instruction;
 133
 134   return procs[p]->FPR[r];
 135 }
 136
 137 void sim_t::interactive_reg(const std::string& cmd, const std::vector<std::string>& args)
 138 {
 139   printf("0x%016llx\n",(unsigned long long)get_reg(args));
 140 }
 141
 142 union fpr
 143 {
 144   reg_t r;
 145   float s;
 146   double d;
 147 };
 148
 149 void sim_t::interactive_fregs(const std::string& cmd, const std::vector<std::string>& args)
 150 {
 151   fpr f;
 152   f.r = get_freg(args);
 153   printf("%g\n",f.s);
 154 }
 155
 156 void sim_t::interactive_fregd(const std::string& cmd, const std::vector<std::string>& args)
 157 {
 158   fpr f;
 159   f.r = get_freg(args);
 160   printf("%g\n",f.d);
 161 }
 162
 163 reg_t sim_t::get_mem(const std::vector<std::string>& args)
 164 {
 165   if(args.size() != 1 && args.size() != 2)
 166     throw trap_illegal_instruction;
 167
 168   std::string addr_str = args[0];
 169   if(args.size() == 2)
 170   {
 171     int p = atoi(args[0].c_str());
 172     if(p >= (int)num_cores())
 173       throw trap_illegal_instruction;
 174     mmu->set_sr(procs[p]->sr);
 175     mmu->set_ptbr(procs[p]->mmu.get_ptbr());
 176     addr_str = args[1];
 177   }
 178
 179   reg_t addr = strtol(addr_str.c_str(),NULL,16), val;
 180   if(addr == LONG_MAX)
 181     addr = strtoul(addr_str.c_str(),NULL,16);
 182
 183   switch(addr % 8)
 184   {
 185     case 0:
 186       val = mmu->load_uint64(addr);
 187       break;
 188     case 4:
 189       val = mmu->load_uint32(addr);
 190       break;
 191     case 2:
 192     case 6:
 193       val = mmu->load_uint16(addr);
 194       break;
 195     default:
 196       val = mmu->load_uint8(addr);
 197       break;
 198   }
 199   return val;
 200 }
 201
 202 void sim_t::interactive_mem(const std::string& cmd, const std::vector<std::string>& args)
 203 {
 204   printf("0x%016llx\n",(unsigned long long)get_mem(args));
 205 }
 206
 207 void sim_t::interactive_str(const std::string& cmd, const std::vector<std::string>& args)
 208 {
 209   if(args.size() != 1)
 210     throw trap_illegal_instruction;
 211
 212   reg_t addr = strtol(args[0].c_str(),NULL,16);
 213
 214   char ch;
 215   while((ch = mmu->load_uint8(addr++)))
 216     putchar(ch);
 217
 218   putchar('\n');
 219 }
 220
 221 void sim_t::interactive_until(const std::string& cmd, const std::vector<std::string>& args)
 222 {
 223   if(args.size() < 3)
 224     return;
 225
 226   std::string scmd = args[0];
 227   reg_t val = strtol(args[args.size()-1].c_str(),NULL,16);
 228   if(val == LONG_MAX)
 229     val = strtoul(args[args.size()-1].c_str(),NULL,16);
 230
 231   std::vector<std::string> args2;
 232   args2 = std::vector<std::string>(args.begin()+1,args.end()-1);
 233
 234   while (1)
 235   {
 236     reg_t current;
 237     if(scmd == "reg")
 238       current = get_reg(args2);
 239     else if(scmd == "pc")
 240       current = get_pc(args2);
 241     else if(scmd == "mem")
 242       current = get_mem(args2);
 243     else
 244       return;
 245
 246     if(cmd == "until" && current == val)
 247       break;
 248     if(cmd == "while" && current != val)
 249       break;
 250
 251     step(1, false);
 252   }
 253 }