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#include <sys/wait.h>
#include <algorithm>
#include "config/gems_root.hh"
#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_Locked_Read:
return "Locked_Read";
case RubyRequestType_Locked_Write:
return "Locked_Write";
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 == "Locked_Read")
return RubyRequestType_Locked_Read;
else if (str == "Locked_Write")
return RubyRequestType_Locked_Write;
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);
}
if (execlp("ruby", "ruby", "-I", GEMS_ROOT "/ruby/config",
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);
}
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