141 lines
3.2 KiB
C++
141 lines
3.2 KiB
C++
#include "htif_emulator.h"
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#include "mm.h"
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#include "mm_dramsim2.h"
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#include <DirectC.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <vector>
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#include <sstream>
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#include <iterator>
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static htif_emulator_t* htif = NULL;
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static unsigned htif_bytes;
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static mm_t* mm = NULL;
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extern "C" {
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void memory_tick(
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vc_handle mem_req_val,
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vc_handle mem_req_rdy,
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vc_handle mem_req_store,
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vc_handle mem_req_addr,
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vc_handle mem_req_tag,
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vc_handle mem_req_data_val,
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vc_handle mem_req_data_rdy,
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vc_handle mem_req_data_bits,
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vc_handle mem_resp_val,
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vc_handle mem_resp_tag,
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vc_handle mem_resp_data)
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{
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uint32_t req_data[MM_WORD_SIZE*REFILL_COUNT/sizeof(uint32_t)];
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for (size_t i = 0; i < MM_WORD_SIZE*REFILL_COUNT/sizeof(uint32_t); i++)
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req_data[i] = vc_4stVectorRef(mem_req_data_bits)[i].d;
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vc_putScalar(mem_req_rdy, mm->req_cmd_ready());
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vc_putScalar(mem_req_data_rdy, mm->req_data_ready());
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vc_putScalar(mem_resp_val, mm->resp_valid());
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vec32 d[MM_WORD_SIZE*REFILL_COUNT/sizeof(uint32_t)];
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d[0].c = 0;
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d[0].d = mm->resp_tag();
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vc_put4stVector(mem_resp_tag, d);
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for (size_t i = 0; i < MM_WORD_SIZE*REFILL_COUNT/sizeof(uint32_t); i++)
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{
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d[i].c = 0;
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d[i].d = ((uint32_t*)mm->resp_data())[i];
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}
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vc_put4stVector(mem_resp_data, d);
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mm->tick
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(
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vc_getScalar(mem_req_val),
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vc_getScalar(mem_req_store),
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vc_4stVectorRef(mem_req_addr)->d,
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vc_4stVectorRef(mem_req_tag)->d,
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vc_getScalar(mem_req_data_val),
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req_data
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);
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}
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void htif_init
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(
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vc_handle width,
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vc_handle argv,
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vc_handle loadmem,
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vc_handle dramsim
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)
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{
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mm = vc_getScalar(dramsim) ? (mm_t*)(new mm_dramsim2_t) : (mm_t*)(new mm_magic_t);
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mm->init(MEM_SIZE);
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vec32* w = vc_4stVectorRef(width);
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assert(w->d <= 32 && w->d % 8 == 0); // htif_tick assumes data fits in a vec32
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htif_bytes = w->d/8;
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char loadmem_str[1024];
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vc_VectorToString(loadmem, loadmem_str);
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if (*loadmem_str)
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load_mem(mm->get_data(), loadmem_str);
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char argv_str[1024];
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vc_VectorToString(argv, argv_str);
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if (!*argv_str)
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{
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if (*loadmem_str)
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strcpy(argv_str, "none");
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else
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{
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fprintf(stderr, "Usage: ./simv [host options] +argv=\"<target program> [target args]\"\n");
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exit(-1);
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}
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}
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std::vector<std::string> args;
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std::stringstream ss(argv_str);
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std::istream_iterator<std::string> begin(ss), end;
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std::copy(begin, end, std::back_inserter<std::vector<std::string>>(args));
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htif = new htif_emulator_t(args);
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}
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void htif_fini()
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{
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delete htif;
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}
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void htif_tick
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(
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vc_handle htif_in_valid,
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vc_handle htif_in_ready,
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vc_handle htif_in_bits,
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vc_handle htif_out_valid,
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vc_handle htif_out_ready,
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vc_handle htif_out_bits,
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vc_handle exit
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)
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{
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static bool peek_in_valid;
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static uint32_t peek_in_bits;
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if (vc_getScalar(htif_in_ready))
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peek_in_valid = htif->recv_nonblocking(&peek_in_bits, htif_bytes);
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vc_putScalar(htif_out_ready, 1);
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if (vc_getScalar(htif_out_valid))
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{
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vec32* bits = vc_4stVectorRef(htif_out_bits);
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htif->send(&bits->d, htif_bytes);
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}
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vec32 bits = {0, 0};
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bits.d = peek_in_bits;
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vc_put4stVector(htif_in_bits, &bits);
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vc_putScalar(htif_in_valid, peek_in_valid);
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vc_putScalar(exit, htif->done() ? (htif->exit_code() << 1 | 1) : 0);
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}
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}
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