summaryrefslogtreecommitdiff
path: root/src/mem/ruby/libruby.cc
blob: 4083a888c66b3465c12e00e933d9944f496cba37 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206

#include <sys/wait.h>
#include <algorithm>

#include "mem/ruby/libruby_internal.hh"
#include "mem/ruby/system/RubyPort.hh"
#include "mem/ruby/system/System.hh"
#include "mem/ruby/eventqueue/RubyEventQueue.hh"
#include "mem/ruby/system/MemoryVector.hh"
#include "mem/ruby/common/Address.hh"

string RubyRequestType_to_string(const RubyRequestType& obj)
{
  switch(obj) {
  case RubyRequestType_IFETCH:
    return "IFETCH";
  case RubyRequestType_LD:
    return "LD";
  case RubyRequestType_ST:
    return "ST";
  case RubyRequestType_RMW:
    return "RMW";
  case RubyRequestType_NULL:
  default:
    assert(0);
    return "";
  }
}

RubyRequestType string_to_RubyRequestType(std::string str)
{
  if (str == "IFETCH")
    return RubyRequestType_IFETCH;
  else if (str == "LD")
    return RubyRequestType_LD;
  else if (str == "ST")
    return RubyRequestType_ST;
  else if (str == "RMW")
    return RubyRequestType_RMW;
  else
    assert(0);
  return RubyRequestType_NULL;
}

ostream& operator<<(ostream& out, const RubyRequestType& obj)
{
  cerr << "in op" << endl;
  out << RubyRequestType_to_string(obj);
  cerr << "flushing" << endl;
  out << flush;
  cerr << "done" << endl;
  return out;
}

vector<string> tokenizeString(string str, string delims)
{
  vector<string> tokens;
  char* pch;
  char* tmp;
  const char* c_delims = delims.c_str();
  tmp = new char[str.length()+1];
  strcpy(tmp, str.c_str());
  pch = strtok(tmp, c_delims);
  while (pch != NULL) {
    string tmp_str(pch);
    if (tmp_str == "null") tmp_str = "";
    tokens.push_back(tmp_str);

    pch = strtok(NULL, c_delims);
  }
  delete [] tmp;
  return tokens;
}

void libruby_init(const char* cfg_filename)
{
  stringstream cfg_output;

  // first we execute the Ruby-lang configuration script
  int fd[2];
  int pid;
  if (pipe(fd) == -1) {
    perror("Error Creating Pipe");
    exit(EXIT_FAILURE);
  }

  pid = fork();
  if (pid == -1){
    perror("Error forking");
    exit(EXIT_FAILURE);
  }

  if (!pid) {
    // child
    close(fd[0]); // close the read end of the pipe
    // replace stdout with the write pipe
    if (dup2(fd[1], STDOUT_FILENO) == -1) {
      perror("Error redirecting stdout");
      exit(EXIT_FAILURE);
    }
#define QUOTE_MACRO(x, y) QUOTE_TXT(x,y)
#define QUOTE_TXT(x, y) #x y
    if (execlp("ruby", "ruby", "-I", QUOTE_MACRO(GEMS_ROOT, "/ruby/config"), QUOTE_MACRO(GEMS_ROOT, "/ruby/config/print_cfg.rb"), "-r", cfg_filename, NULL)) {
      perror("execlp");
      exit(EXIT_FAILURE);
    }
  } else {
    close(fd[1]);

    int child_status;
    if (wait(&child_status) == -1) {
      perror("wait");
      exit(EXIT_FAILURE);
    }
    if (child_status != EXIT_SUCCESS) {
      exit(EXIT_FAILURE);
    }

    char buf[100];
    int bytes_read;
    while( (bytes_read = read(fd[0], buf, 100)) > 0 ) {
      for (int i=0;i<bytes_read;i++) {
        //      cout << buf[i];
        cfg_output << buf[i];
      }
    }
    assert(bytes_read == 0);
    close(fd[0]);
  }

  vector<RubyObjConf> * sys_conf = new vector<RubyObjConf>;

  string line;
  getline(cfg_output, line) ;
  while ( !cfg_output.eof() ) {
    vector<string> tokens = tokenizeString(line, " ");
    assert(tokens.size() >= 2);
    vector<string> argv;
    for (size_t i=2; i<tokens.size(); i++) {
      std::replace(tokens[i].begin(), tokens[i].end(), '%', ' ');
      std::replace(tokens[i].begin(), tokens[i].end(), '#', '\n');
      argv.push_back(tokens[i]);
    }
    sys_conf->push_back(RubyObjConf(tokens[0], tokens[1], argv));
    tokens.clear();
    argv.clear();
    getline(cfg_output, line);
  }

  RubySystem::create(*sys_conf);
  delete sys_conf;
}

RubyPortHandle libruby_get_port(const char* port_name, void (*hit_callback)(int64_t access_id))
{
  return static_cast<RubyPortHandle>(RubySystem::getPort(port_name, hit_callback));
}

RubyPortHandle libruby_get_port_by_name(const char* port_name)
{
  return static_cast<RubyPortHandle>(RubySystem::getPortOnly(port_name));
}

void libruby_write_ram(uint64_t paddr, uint8_t* data, int len)
{
  RubySystem::getMemoryVector()->write(Address(paddr), data, len);
}

void libruby_read_ram(uint64_t paddr, uint8_t* data, int len)
{
  RubySystem::getMemoryVector()->read(Address(paddr), data, len);
}

int64_t libruby_issue_request(RubyPortHandle p, struct RubyRequest request)
{
  return static_cast<RubyPort*>(p)->makeRequest(request);
}

int libruby_tick(int n)
{
  RubySystem::getEventQueue()->triggerEvents(RubySystem::getEventQueue()->getTime() + n);
  return 0;
}

void libruby_destroy()
{
}

const char* libruby_last_error()
{
  return "";
}

void libruby_print_config(std::ostream & out)
{
  RubySystem::printConfig(out);
}

void libruby_print_stats(std::ostream & out)
{
  RubySystem::printStats(out);
}

uint64_t libruby_get_time() {
  return RubySystem::getCycleCount(0);
}