spike_main/spike.cc

   1 // See LICENSE for license details.
   2
   3 #include "sim.h"
   4 #include "mmu.h"
   5 #include "remote_bitbang.h"
   6 #include "cachesim.h"
   7 #include "extension.h"
   8 #include <dlfcn.h>
   9 #include <fesvr/option_parser.h>
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <vector>
  13 #include <string>
  14 #include <memory>
  15
  16 static void help()
  17 {
  18   fprintf(stderr, "usage: spike [host options] <target program> [target options]\n");
  19   fprintf(stderr, "Host Options:\n");
  20   fprintf(stderr, "  -p<n>                 Simulate <n> processors [default 1]\n");
  21   fprintf(stderr, "  -m<n>                 Provide <n> MiB of target memory [default 4096]\n");
  22   fprintf(stderr, "  -d                    Interactive debug mode\n");
  23   fprintf(stderr, "  -g                    Track histogram of PCs\n");
  24   fprintf(stderr, "  -l                    Generate a log of execution\n");
  25   fprintf(stderr, "  -h                    Print this help message\n");
  26   fprintf(stderr, "  -H                 Start halted, allowing a debugger to connect\n");
  27   fprintf(stderr, "  --isa=<name>          RISC-V ISA string [default %s]\n", DEFAULT_ISA);
  28   fprintf(stderr, "  --ic=<S>:<W>:<B>      Instantiate a cache model with S sets,\n");
  29   fprintf(stderr, "  --dc=<S>:<W>:<B>        W ways, and B-byte blocks (with S and\n");
  30   fprintf(stderr, "  --l2=<S>:<W>:<B>        B both powers of 2).\n");
  31   fprintf(stderr, "  --extension=<name>    Specify RoCC Extension\n");
  32   fprintf(stderr, "  --extlib=<name>       Shared library to load\n");
  33   fprintf(stderr, "  --rbb-port=<port>     Listen on <port> for remote bitbang connection\n");
  34   fprintf(stderr, "  --dump-dts  Print device tree string and exit\n");
  35   exit(1);
  36 }
  37
  38 int main(int argc, char** argv)
  39 {
  40   bool debug = false;
  41   bool halted = false;
  42   bool histogram = false;
  43   bool log = false;
  44   bool dump_dts = false;
  45   size_t nprocs = 1;
  46   size_t mem_mb = 0;
  47   std::unique_ptr<icache_sim_t> ic;
  48   std::unique_ptr<dcache_sim_t> dc;
  49   std::unique_ptr<cache_sim_t> l2;
  50   std::function<extension_t*()> extension;
  51   const char* isa = DEFAULT_ISA;
  52   uint16_t rbb_port = 0;
  53   bool use_rbb = false;
  54
  55   option_parser_t parser;
  56   parser.help(&help);
  57   parser.option('h', 0, 0, [&](const char* s){help();});
  58   parser.option('d', 0, 0, [&](const char* s){debug = true;});
  59   parser.option('g', 0, 0, [&](const char* s){histogram = true;});
  60   parser.option('l', 0, 0, [&](const char* s){log = true;});
  61   parser.option('p', 0, 1, [&](const char* s){nprocs = atoi(s);});
  62   parser.option('m', 0, 1, [&](const char* s){mem_mb = atoi(s);});
  63   // I wanted to use --halted, but for some reason that doesn't work.
  64   parser.option('H', 0, 0, [&](const char* s){halted = true;});
  65   parser.option(0, "rbb-port", 1, [&](const char* s){use_rbb = true; rbb_port = atoi(s);});
  66   parser.option(0, "ic", 1, [&](const char* s){ic.reset(new icache_sim_t(s));});
  67   parser.option(0, "dc", 1, [&](const char* s){dc.reset(new dcache_sim_t(s));});
  68   parser.option(0, "l2", 1, [&](const char* s){l2.reset(cache_sim_t::construct(s, "L2$"));});
  69   parser.option(0, "isa", 1, [&](const char* s){isa = s;});
  70   parser.option(0, "extension", 1, [&](const char* s){extension = find_extension(s);});
  71   parser.option(0, "dump-dts", 0, [&](const char *s){dump_dts = true;});
  72   parser.option(0, "extlib", 1, [&](const char *s){
  73     void *lib = dlopen(s, RTLD_NOW | RTLD_GLOBAL);
  74     if (lib == NULL) {
  75       fprintf(stderr, "Unable to load extlib '%s': %s\n", s, dlerror());
  76       exit(-1);
  77     }
  78   });
  79
  80   auto argv1 = parser.parse(argv);
  81   std::vector<std::string> htif_args(argv1, (const char*const*)argv + argc);
  82   sim_t s(isa, nprocs, mem_mb, halted, htif_args);
  83   std::unique_ptr<jtag_dtm_t> jtag_dtm(new jtag_dtm_t(&s.debug_module));
  84   std::unique_ptr<remote_bitbang_t> remote_bitbang((remote_bitbang_t *) NULL);
  85   if (use_rbb) {
  86     remote_bitbang.reset(new remote_bitbang_t(rbb_port, &(*jtag_dtm)));
  87     s.set_remote_bitbang(&(*remote_bitbang));
  88   }
  89
  90   if (dump_dts) {
  91     printf("%s", s.get_dts());
  92     return 0;
  93   }
  94
  95   if (!*argv1)
  96     help();
  97
  98   if (ic && l2) ic->set_miss_handler(&*l2);
  99   if (dc && l2) dc->set_miss_handler(&*l2);
 100   for (size_t i = 0; i < nprocs; i++)
 101   {
 102     if (ic) s.get_core(i)->get_mmu()->register_memtracer(&*ic);
 103     if (dc) s.get_core(i)->get_mmu()->register_memtracer(&*dc);
 104     if (extension) s.get_core(i)->register_extension(extension());
 105   }
 106
 107   s.set_debug(debug);
 108   s.set_log(log);
 109   s.set_histogram(histogram);
 110   return s.run();
 111 }