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rocket-chip/csrc/SimDTM.cc

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// See LICENSE.SiFive for license details.
#include <fesvr/dtm.h>
#include <vpi_user.h>
#include <svdpi.h>
dtm_t* dtm;
namespace {
// Remove args that will confuse dtm, such as those that require two tokens, like VCS code coverage "-cm line+cond"
std::vector<std::string> filter_argv_for_dtm(int argc, char** argv)
{
std::vector<std::string> out;
for (int i = 1; i < argc; ++i) { // start with 1 to skip my executable name
if (!strncmp(argv[i], "-cm", 3)) {
++i; // skip this one and the next one
}
else {
out.push_back(argv[i]);
}
}
return out;
}
}
extern "C" int debug_tick
(
unsigned char* debug_req_valid,
unsigned char debug_req_ready,
int* debug_req_bits_addr,
int* debug_req_bits_op,
long long* debug_req_bits_data,
unsigned char debug_resp_valid,
unsigned char* debug_resp_ready,
int debug_resp_bits_resp,
long long debug_resp_bits_data
)
{
if (!dtm) {
s_vpi_vlog_info info;
if (!vpi_get_vlog_info(&info))
abort();
dtm = new dtm_t(filter_argv_for_dtm(info.argc, info.argv));
}
dtm_t::resp resp_bits;
resp_bits.resp = debug_resp_bits_resp;
resp_bits.data = debug_resp_bits_data;
dtm->tick
(
debug_req_ready,
debug_resp_valid,
resp_bits
);
*debug_resp_ready = dtm->resp_ready();
*debug_req_valid = dtm->req_valid();
*debug_req_bits_addr = dtm->req_bits().addr;
*debug_req_bits_op = dtm->req_bits().op;
*debug_req_bits_data = dtm->req_bits().data;
return dtm->done() ? (dtm->exit_code() << 1 | 1) : 0;
}