Merge branch 'sail2' into rmem_interpreter

1 files changed, 0 insertions, 486 deletions

diff --git a/riscv/riscv_sim.c b/riscv/riscv_sim.c
deleted file mode 100644
index 276c7b1b..00000000
--- a/riscv/riscv_sim.c
+++ /dev/null
@@ -1,486 +0,0 @@
-#include <getopt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-
-#include "elf.h"
-#include "sail.h"
-#include "rts.h"
-#include "riscv_platform.h"
-#include "riscv_platform_impl.h"
-#include "riscv_sail.h"
-
-//#define SPIKE 1
-#ifdef SPIKE
-#include "tv_spike_intf.h"
-#else
-struct tv_spike_t;
-#endif
-
-/* Selected CSRs from riscv-isa-sim/riscv/encoding.h */
-#define CSR_STVEC 0x105
-#define CSR_SEPC 0x141
-#define CSR_SCAUSE 0x142
-#define CSR_STVAL 0x143
-
-#define CSR_MSTATUS 0x300
-#define CSR_MISA 0x301
-#define CSR_MEDELEG 0x302
-#define CSR_MIDELEG 0x303
-#define CSR_MIE 0x304
-#define CSR_MTVEC 0x305
-#define CSR_MEPC 0x341
-#define CSR_MCAUSE 0x342
-#define CSR_MTVAL 0x343
-#define CSR_MIP 0x344
-
-static bool do_dump_dts = false;
-struct tv_spike_t *s = NULL;
-char *term_log = NULL;
-char *dtb_file = NULL;
-unsigned char *dtb = NULL;
-size_t dtb_len = 0;
-
-unsigned char *spike_dtb = NULL;
-size_t spike_dtb_len = 0;
-
-static struct option options[] = {
-  {"enable-dirty",                no_argument,       0, 'd'},
-  {"enable-misaligned",           no_argument,       0, 'm'},
-  {"mtval-has-illegal-inst-bits", no_argument,       0, 'i'},
-  {"dump-dts",                    no_argument,       0, 's'},
-  {"device-tree-blob",            required_argument, 0, 'b'},
-  {"terminal-log",                required_argument, 0, 't'},
-  {"help",                        no_argument,       0, 'h'},
-  {0, 0, 0, 0}
-};
-
-static void print_usage(const char *argv0, int ec)
-{
-  fprintf(stdout, "Usage: %s [options] <elf_file>\n", argv0);
-  struct option *opt = options;
-  while (opt->name) {
-    fprintf(stdout, "\t -%c\t %s\n", (char)opt->val, opt->name);
-    opt++;
-  }
-  exit(ec);
-}
-
-static void dump_dts(void)
-{
-#ifdef SPIKE
-  size_t dts_len = 0;
-  struct tv_spike_t *s = tv_init("RV64IMAC", 0);
-  tv_get_dts(s, NULL, &dts_len);
-  if (dts_len > 0) {
-    unsigned char *dts = (unsigned char *)malloc(dts_len + 1);
-    dts[dts_len] = '\0';
-    tv_get_dts(s, dts, &dts_len);
-    fprintf(stdout, "%s\n", dts);
-  }
-#else
-  fprintf(stdout, "Spike linkage is currently needed to generate DTS.\n");
-#endif
-  exit(0);
-}
-
-static void read_dtb(const char *path)
-{
-  int fd = open(path, O_RDONLY);
-  if (fd < 0) {
-    fprintf(stderr, "Unable to read DTB file %s: %s\n", path, strerror(errno));
-    exit(1);
-  }
-  struct stat st;
-  if (fstat(fd, &st) < 0) {
-    fprintf(stderr, "Unable to stat DTB file %s: %s\n", path, strerror(errno));
-    exit(1);
-  }
-  char *m = (char *)mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-  if (m == MAP_FAILED) {
-    fprintf(stderr, "Unable to map DTB file %s: %s\n", path, strerror(errno));
-    exit(1);
-  }
-  dtb = (unsigned char *)malloc(st.st_size);
-  if (dtb == NULL) {
-    fprintf(stderr, "Cannot allocate DTB from file %s!\n", path);
-    exit(1);
-  }
-  memcpy(dtb, m, st.st_size);
-  dtb_len = st.st_size;
-  munmap(m, st.st_size);
-  close(fd);
-
-  fprintf(stdout, "Read %ld bytes of DTB from %s.\n", dtb_len, path);
-}
-
-char *process_args(int argc, char **argv)
-{
-  int c, idx = 1;
-  while(true) {
-    c = getopt_long(argc, argv, "dmsb:t:v:h", options, &idx);
-    if (c == -1) break;
-    switch (c) {
-    case 'd':
-      rv_enable_dirty_update = true;
-      break;
-    case 'm':
-      rv_enable_misaligned = true;
-      break;
-    case 'i':
-      rv_mtval_has_illegal_inst_bits = true;
-    case 's':
-      do_dump_dts = true;
-      break;
-    case 'b':
-      dtb_file = strdup(optarg);
-      break;
-    case 't':
-      term_log = strdup(optarg);
-      break;
-    case 'h':
-      print_usage(argv[0], 0);
-      break;
-    default:
-      fprintf(stderr, "Unrecognized optchar %c\n", c);
-      print_usage(argv[0], 1);
-    }
-  }
-  if (do_dump_dts) dump_dts();
-  if (idx >= argc) print_usage(argv[0], 0);
-  if (term_log == NULL) term_log = strdup("term.log");
-  if (dtb_file) read_dtb(dtb_file);
-
-  fprintf(stdout, "Running file %s.\n", argv[optind]);
-  return argv[optind];
-}
-
-uint64_t load_sail(char *f)
-{
-  bool is32bit;
-  uint64_t entry;
-  load_elf(f, &is32bit, &entry);
-  if (is32bit) {
-    fprintf(stderr, "32-bit RISC-V not yet supported.\n");
-    exit(1);
-  }
-  fprintf(stdout, "ELF Entry @ %lx\n", entry);
-  /* locate htif ports */
-  if (lookup_sym(f, "tohost", &rv_htif_tohost) < 0) {
-    fprintf(stderr, "Unable to locate htif tohost port.\n");
-    exit(1);
-  }
-  fprintf(stderr, "tohost located at %0" PRIx64 "\n", rv_htif_tohost);
-  return entry;
-}
-
-void init_spike(const char *f, uint64_t entry)
-{
-#ifdef SPIKE
-  /* The initialization order below matters. */
-  s = tv_init("RV64IMAC", 1);
-  tv_set_verbose(s, 1);
-  tv_set_dtb_in_rom(s, 1);
-  tv_load_elf(s, f);
-  tv_reset(s);
-
-  /* sync the insns per tick */
-  rv_insns_per_tick = tv_get_insns_per_tick(s);
-
-  /* get DTB from spike */
-  tv_get_dtb(s, NULL, &spike_dtb_len);
-  if (spike_dtb_len > 0) {
-    spike_dtb = (unsigned char *)malloc(spike_dtb_len + 1);
-    dtb[spike_dtb_len] = '\0';
-    if (!tv_get_dtb(s, spike_dtb, &spike_dtb_len)) {
-      fprintf(stderr, "Got %ld bytes of dtb at %p\n", spike_dtb_len, spike_dtb);
-    } else {
-      fprintf(stderr, "Error getting DTB from Spike.\n");
-      exit(1);
-    }
-  } else {
-    fprintf(stderr, "No DTB available from Spike.\n");
-  }
-#else
-  s = NULL;
-#endif
-}
-
-void tick_spike()
-{
-#ifdef SPIKE
-  tv_tick_clock(s);
-  tv_step_io(s);
-#endif
-}
-
-void init_sail_reset_vector(uint64_t entry)
-{
-#define RST_VEC_SIZE 8
-  uint32_t reset_vec[RST_VEC_SIZE] = {
-    0x297,                                      // auipc  t0,0x0
-    0x28593 + (RST_VEC_SIZE * 4 << 20),         // addi   a1, t0, &dtb
-    0xf1402573,                                 // csrr   a0, mhartid
-    SAIL_XLEN == 32 ?
-      0x0182a283u :                             // lw     t0,24(t0)
-      0x0182b283u,                              // ld     t0,24(t0)
-    0x28067,                                    // jr     t0
-    0,
-    (uint32_t) (entry & 0xffffffff),
-    (uint32_t) (entry >> 32)
-  };
-
-  rv_rom_base = DEFAULT_RSTVEC;
-  uint64_t addr = rv_rom_base;
-  for (int i = 0; i < sizeof(reset_vec); i++)
-    write_mem(addr++, (uint64_t)((char *)reset_vec)[i]);
-
-  if (dtb && dtb_len) {
-    for (size_t i = 0; i < dtb_len; i++)
-      write_mem(addr++, dtb[i]);
-  }
-
-#ifdef SPIKE
-  if (dtb && dtb_len) {
-    // Ensure that Spike's DTB matches the one provided.
-    bool matched = dtb_len == spike_dtb_len;
-    if (matched) {
-      for (size_t i = 0; i < dtb_len; i++)
-        matched = matched && (dtb[i] == spike_dtb[i]);
-    }
-    if (!matched) {
-      fprintf(stderr, "Provided DTB does not match Spike's!\n");
-      exit(1);
-    }
-  } else {
-    if (spike_dtb_len > 0) {
-      // Use the DTB from Spike.
-      for (size_t i = 0; i < spike_dtb_len; i++)
-        write_mem(addr++, spike_dtb[i]);
-    } else {
-      fprintf(stderr, "Running without rom device tree.\n");
-    }
-  }
-#endif
-
-  /* zero-fill to page boundary */
-  const int align = 0x1000;
-  uint64_t rom_end = (addr + align -1)/align * align;
-  for (int i = addr; i < rom_end; i++)
-    write_mem(addr++, 0);
-
-  /* set rom size */
-  rv_rom_size = rom_end - rv_rom_base;
-  /* boot at reset vector */
-  zPC = rv_rom_base;
-}
-
-void init_sail(uint64_t elf_entry)
-{
-  model_init();
-  zinit_platform(UNIT);
-  zinit_sys(UNIT);
-  init_sail_reset_vector(elf_entry);
-}
-
-int init_check(struct tv_spike_t *s)
-{
-  int passed = 1;
-#ifdef SPIKE
-  passed &= tv_check_csr(s, CSR_MISA, zmisa.zMisa_chunk_0);
-#endif
-  return passed;
-}
-
-void finish(int ec)
-{
-  model_fini();
-#ifdef SPIKE
-  tv_free(s);
-#endif
-  exit(ec);
-}
-
-int compare_states(struct tv_spike_t *s)
-{
-  int passed = 1;
-
-#ifdef SPIKE
-  // fix default C enum map for cur_privilege
-  uint8_t priv = (zcur_privilege == 2) ? 3 : zcur_privilege;
-  passed &= tv_check_priv(s, priv);
-
-  passed &= tv_check_pc(s, zPC);
-
-  passed &= tv_check_gpr(s, 1, zx1);
-  passed &= tv_check_gpr(s, 2, zx2);
-  passed &= tv_check_gpr(s, 3, zx3);
-  passed &= tv_check_gpr(s, 4, zx4);
-  passed &= tv_check_gpr(s, 5, zx5);
-  passed &= tv_check_gpr(s, 6, zx6);
-  passed &= tv_check_gpr(s, 7, zx7);
-  passed &= tv_check_gpr(s, 8, zx8);
-  passed &= tv_check_gpr(s, 9, zx9);
-  passed &= tv_check_gpr(s, 10, zx10);
-  passed &= tv_check_gpr(s, 11, zx11);
-  passed &= tv_check_gpr(s, 12, zx12);
-  passed &= tv_check_gpr(s, 13, zx13);
-  passed &= tv_check_gpr(s, 14, zx14);
-  passed &= tv_check_gpr(s, 15, zx15);
-  passed &= tv_check_gpr(s, 15, zx15);
-  passed &= tv_check_gpr(s, 16, zx16);
-  passed &= tv_check_gpr(s, 17, zx17);
-  passed &= tv_check_gpr(s, 18, zx18);
-  passed &= tv_check_gpr(s, 19, zx19);
-  passed &= tv_check_gpr(s, 20, zx20);
-  passed &= tv_check_gpr(s, 21, zx21);
-  passed &= tv_check_gpr(s, 22, zx22);
-  passed &= tv_check_gpr(s, 23, zx23);
-  passed &= tv_check_gpr(s, 24, zx24);
-  passed &= tv_check_gpr(s, 25, zx25);
-  passed &= tv_check_gpr(s, 25, zx25);
-  passed &= tv_check_gpr(s, 26, zx26);
-  passed &= tv_check_gpr(s, 27, zx27);
-  passed &= tv_check_gpr(s, 28, zx28);
-  passed &= tv_check_gpr(s, 29, zx29);
-  passed &= tv_check_gpr(s, 30, zx30);
-  passed &= tv_check_gpr(s, 31, zx31);
-
-  /* some selected CSRs for now */
-
-  passed &= tv_check_csr(s, CSR_MCAUSE, zmcause.zMcause_chunk_0);
-  passed &= tv_check_csr(s, CSR_MEPC, zmepc);
-  passed &= tv_check_csr(s, CSR_MTVAL, zmtval);
-  passed &= tv_check_csr(s, CSR_MSTATUS, zmstatus);
-
-  passed &= tv_check_csr(s, CSR_SCAUSE, zscause.zMcause_chunk_0);
-  passed &= tv_check_csr(s, CSR_SEPC, zsepc);
-  passed &= tv_check_csr(s, CSR_STVAL, zstval);
-#endif
-
-  return passed;
-}
-
-void flush_logs(void)
-{
-  fprintf(stderr, "\n");
-  fflush(stderr);
-  fprintf(stdout, "\n");
-  fflush(stdout);
-}
-
-void run_sail(void)
-{
-  bool spike_done;
-  bool stepped;
-  bool diverged = false;
-
-  /* initialize the step number */
-  mach_int step_no = 0;
-  int insn_cnt = 0;
-
-  while (!zhtif_done) {
-    { /* run a Sail step */
-      sail_int sail_step;
-      CREATE(sail_int)(&sail_step);
-      CONVERT_OF(sail_int, mach_int)(&sail_step, step_no);
-      stepped = zstep(sail_step);
-      if (have_exception) goto step_exception;
-      flush_logs();
-    }
-    if (stepped) {
-      step_no++;
-      insn_cnt++;
-    }
-
-#ifdef SPIKE
-    { /* run a Spike step */
-      tv_step(s);
-      spike_done = tv_is_done(s);
-      flush_logs();
-    }
-
-    if (zhtif_done) {
-      if (!spike_done) {
-        fprintf(stdout, "Sail done (exit-code %ld), but not Spike!\n", zhtif_exit_code);
-        exit(1);
-      }
-    } else {
-      if (spike_done) {
-        fprintf(stdout, "Spike done, but not Sail!\n");
-        exit(1);
-      }
-    }
-    if (!compare_states(s)) {
-      diverged = true;
-      break;
-    }
-#endif
-    if (zhtif_done) {
-      /* check exit code */
-      if (zhtif_exit_code == 0)
-        fprintf(stdout, "SUCCESS\n");
-      else
-        fprintf(stdout, "FAILURE: %ld\n", zhtif_exit_code);
-    }
-
-    if (insn_cnt == rv_insns_per_tick) {
-      insn_cnt = 0;
-      ztick_clock(UNIT);
-      ztick_platform(UNIT);
-
-      tick_spike();
-    }
-  }
-
- dump_state:
-  if (diverged) {
-    /* TODO */
-  }
-  finish(diverged);
-
- step_exception:
-  fprintf(stderr, "Sail exception!");
-  goto dump_state;
-}
-
-void init_logs()
-{
-#ifdef SPIKE
-  // The Spike interface uses stdout for terminal output, and stderr for logs.
-  // Do the same here.
-  if (dup2(1, 2) < 0) {
-    fprintf(stderr, "Unable to dup 1 -> 2: %s\n", strerror(errno));
-    exit(1);
-  }
-#endif
-
-  if ((term_fd = open(term_log, O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IRGRP|S_IROTH|S_IWUSR)) < 0) {
-    fprintf(stderr, "Cannot create terminal log '%s': %s\n", term_log, strerror(errno));
-    exit(1);
-  }
-}
-
-int main(int argc, char **argv)
-{
-  char *file = process_args(argc, argv);
-  init_logs();
-
-  uint64_t entry = load_sail(file);
-
-  /* initialize spike before sail so that we can access the device-tree blob,
-   * until we roll our own.
-   */
-  init_spike(file, entry);
-  init_sail(entry);
-
-  if (!init_check(s)) finish(1);
-
-  run_sail();
-  flush_logs();
-}