riscv/interactive.cc

   1 #include "sim.h"
   2 #include "htif.h"
   3 #include <sys/mman.h>
   4 #include <map>
   5 #include <iostream>
   6 #include <climits>
   7 #include <assert.h>
   8
   9 void sim_t::interactive()
  10 {
  11   putchar(':');
  12   char s[128];
  13   std::cin.getline(s,sizeof(s)-1);
  14
  15   char* p = strtok(s," ");
  16   if(!p)
  17   {
  18     interactive_run_noisy(std::string("r"), std::vector<std::string>(1,"1"));
  19     return;
  20   }
  21   std::string cmd = p;
  22
  23   std::vector<std::string> args;
  24   while((p = strtok(NULL," ")))
  25     args.push_back(p);
  26
  27
  28   typedef void (sim_t::*interactive_func)(const std::string&, const std::vector<std::string>&);
  29   std::map<std::string,interactive_func> funcs;
  30
  31   funcs["r"] = &sim_t::interactive_run_noisy;
  32   funcs["rs"] = &sim_t::interactive_run_silent;
  33   funcs["rp"] = &sim_t::interactive_run_proc_noisy;
  34   funcs["rps"] = &sim_t::interactive_run_proc_silent;
  35   funcs["reg"] = &sim_t::interactive_reg;
  36   funcs["fregs"] = &sim_t::interactive_fregs;
  37   funcs["fregd"] = &sim_t::interactive_fregd;
  38   funcs["mem"] = &sim_t::interactive_mem;
  39   funcs["str"] = &sim_t::interactive_str;
  40   funcs["until"] = &sim_t::interactive_until;
  41   funcs["while"] = &sim_t::interactive_until;
  42   funcs["q"] = &sim_t::interactive_quit;
  43
  44   try
  45   {
  46     if(funcs.count(cmd))
  47       (this->*funcs[cmd])(cmd, args);
  48   }
  49   catch(trap_t t) {}
  50 }
  51
  52 void sim_t::interactive_run_noisy(const std::string& cmd, const std::vector<std::string>& args)
  53 {
  54   interactive_run(cmd,args,true);
  55 }
  56
  57 void sim_t::interactive_run_silent(const std::string& cmd, const std::vector<std::string>& args)
  58 {
  59   interactive_run(cmd,args,false);
  60 }
  61
  62 void sim_t::interactive_run(const std::string& cmd, const std::vector<std::string>& args, bool noisy)
  63 {
  64   if(args.size())
  65     step_all(atoll(args[0].c_str()),1,noisy);
  66   else
  67     while(1) step_all(1,1,noisy);
  68 }
  69
  70 void sim_t::interactive_run_proc_noisy(const std::string& cmd, const std::vector<std::string>& args)
  71 {
  72   interactive_run_proc(cmd,args,true);
  73 }
  74
  75 void sim_t::interactive_run_proc_silent(const std::string& cmd, const std::vector<std::string>& args)
  76 {
  77   interactive_run_proc(cmd,args,false);
  78 }
  79
  80 void sim_t::interactive_run_proc(const std::string& cmd, const std::vector<std::string>& a, bool noisy)
  81 {
  82   if(a.size() == 0)
  83     return;
  84
  85   int p = atoi(a[0].c_str());
  86   if(p >= (int)num_cores())
  87     return;
  88
  89   if(a.size() == 2)
  90     procs[p]->step(atoi(a[1].c_str()),noisy);
  91   else
  92     while(1) procs[p]->step(1,noisy);
  93 }
  94
  95 void sim_t::interactive_quit(const std::string& cmd, const std::vector<std::string>& args)
  96 {
  97   stop();
  98 }
  99
 100 reg_t sim_t::get_pc(const std::vector<std::string>& args)
 101 {
 102   if(args.size() != 1)
 103     throw trap_illegal_instruction;
 104
 105   int p = atoi(args[0].c_str());
 106   if(p >= (int)num_cores())
 107     throw trap_illegal_instruction;
 108
 109   return procs[p]->pc;
 110 }
 111
 112 reg_t sim_t::get_reg(const std::vector<std::string>& args)
 113 {
 114   if(args.size() != 2)
 115     throw trap_illegal_instruction;
 116
 117   int p = atoi(args[0].c_str());
 118   int r = atoi(args[1].c_str());
 119   if(p >= (int)num_cores() || r >= NXPR)
 120     throw trap_illegal_instruction;
 121
 122   return procs[p]->XPR[r];
 123 }
 124
 125 reg_t sim_t::get_freg(const std::vector<std::string>& args)
 126 {
 127   if(args.size() != 2)
 128     throw trap_illegal_instruction;
 129
 130   int p = atoi(args[0].c_str());
 131   int r = atoi(args[1].c_str());
 132   if(p >= (int)num_cores() || r >= NFPR)
 133     throw trap_illegal_instruction;
 134
 135   return procs[p]->FPR[r];
 136 }
 137
 138 void sim_t::interactive_reg(const std::string& cmd, const std::vector<std::string>& args)
 139 {
 140   printf("0x%016llx\n",(unsigned long long)get_reg(args));
 141 }
 142
 143 union fpr
 144 {
 145   reg_t r;
 146   float s;
 147   double d;
 148 };
 149
 150 void sim_t::interactive_fregs(const std::string& cmd, const std::vector<std::string>& args)
 151 {
 152   fpr f;
 153   f.r = get_freg(args);
 154   printf("%g\n",f.s);
 155 }
 156
 157 void sim_t::interactive_fregd(const std::string& cmd, const std::vector<std::string>& args)
 158 {
 159   fpr f;
 160   f.r = get_freg(args);
 161   printf("%g\n",f.d);
 162 }
 163
 164 reg_t sim_t::get_mem(const std::vector<std::string>& args)
 165 {
 166   if(args.size() != 1 && args.size() != 2)
 167     throw trap_illegal_instruction;
 168
 169   std::string addr_str = args[0];
 170   if(args.size() == 2)
 171   {
 172     int p = atoi(args[0].c_str());
 173     if(p >= (int)num_cores())
 174       throw trap_illegal_instruction;
 175     mmu->set_vm_enabled(!!(procs[p]->sr & SR_VM));
 176     mmu->set_ptbr(procs[p]->mmu.get_ptbr());
 177     addr_str = args[1];
 178   }
 179
 180   reg_t addr = strtol(addr_str.c_str(),NULL,16), val;
 181   if(addr == LONG_MAX)
 182     addr = strtoul(addr_str.c_str(),NULL,16);
 183
 184   switch(addr % 8)
 185   {
 186     case 0:
 187       val = mmu->load_uint64(addr);
 188       break;
 189     case 4:
 190       val = mmu->load_uint32(addr);
 191       break;
 192     case 2:
 193     case 6:
 194       val = mmu->load_uint16(addr);
 195       break;
 196     default:
 197       val = mmu->load_uint8(addr);
 198       break;
 199   }
 200   return val;
 201 }
 202
 203 void sim_t::interactive_mem(const std::string& cmd, const std::vector<std::string>& args)
 204 {
 205   printf("0x%016llx\n",(unsigned long long)get_mem(args));
 206 }
 207
 208 void sim_t::interactive_str(const std::string& cmd, const std::vector<std::string>& args)
 209 {
 210   if(args.size() != 1)
 211     throw trap_illegal_instruction;
 212
 213   reg_t addr = strtol(args[0].c_str(),NULL,16);
 214
 215   char ch;
 216   while((ch = mmu->load_uint8(addr++)))
 217     putchar(ch);
 218
 219   putchar('\n');
 220 }
 221
 222 void sim_t::interactive_until(const std::string& cmd, const std::vector<std::string>& args)
 223 {
 224   if(args.size() < 3)
 225     return;
 226
 227   std::string scmd = args[0];
 228   reg_t val = strtol(args[args.size()-1].c_str(),NULL,16);
 229   if(val == LONG_MAX)
 230     val = strtoul(args[args.size()-1].c_str(),NULL,16);
 231
 232   std::vector<std::string> args2;
 233   args2 = std::vector<std::string>(args.begin()+1,args.end()-1);
 234
 235   while(1)
 236   {
 237     reg_t current;
 238     if(scmd == "reg")
 239       current = get_reg(args2);
 240     else if(scmd == "pc")
 241       current = get_pc(args2);
 242     else if(scmd == "mem")
 243       current = get_mem(args2);
 244     else if(scmd == "tohost")
 245       current = tohost;
 246     else
 247       return;
 248
 249     if(cmd == "until" && current == val)
 250       break;
 251     if(cmd == "while" && current != val)
 252       break;
 253
 254     step_all(1,1,false);
 255   }
 256 }