uc.cc

Small Device C Compiler 面向Inter8051

    
  if (mems->count < type)
    m= (class cl_mem *)(mems->at(MEM_DUMMY));
  else
    m= (class cl_mem *)(mems->at(type));
  return(m);
}

class cl_mem *
cl_uc::mem(char *class_name)
{
  int i, found= 0;
  char *mcn, *n, *s;

  if (!class_name)
    return(0);
  s= n= strdup(class_name);
  while (*s)
    {
      *s= toupper(*s);
      s++;
    }
  if (!class_name ||
      !(*class_name))
    return(0);
  for (i= 0; !found && i < mems->count; i++)
    {
      cl_mem *m= (cl_mem *)(mems->at(i));
      if (!m ||
	  !m->class_name ||
	  !(*(m->class_name)))
	continue;
      s= mcn= strdup(m->class_name);
      while (*s)
	{
	  *s= toupper(*s);
	  s++;
	}
      if (strstr(/*m->class_name*/mcn,/*class_name*/n) == /*m->class_name*/mcn)
	found= 1;
      free(mcn);
      if (found)
	{
	  free(n);
	  return(m);
	}
    }
  free(n);
  return(0);
}

static long
ReadInt(FILE *f, bool *ok, int bytes)
{
  char s2[3];
  long l= 0;

  *ok= DD_FALSE;
  while (bytes)
    {
      if (fscanf(f, "%2c", &s2[0]) == EOF)
	return(0);
      s2[2]= '\0';
      l= l*256 + strtol(s2, NULL, 16);
      bytes--;
    }
  *ok= DD_TRUE;
  return(l);
}


/* 
 * Reading intel hexa file into EROM
 *____________________________________________________________________________
 *
 * If parameter is a NULL pointer, this function reads data from `cmd_in'
 *
 */

long
cl_uc::read_hex_file(const char *nam)
{
  FILE *f;
  int c;
  long written= 0, recnum= 0;

  uchar dnum;     // data number
  uchar rtyp=0;   // record type
  uint  addr= 0;  // address
  uchar rec[300]; // data record
  uchar sum ;     // checksum
  uchar chk ;     // check
  int  i;
  bool ok, get_low= 1;
  uchar low= 0, high;

  if (!nam)
    {
      sim->app->get_commander()->
	dd_printf("cl_uc::read_hex_file File name not specified\n");
      return(-1);
    }
  else
    if ((f= fopen(nam, "r")) == NULL)
      {
	fprintf(stderr, "Can't open `%s': %s\n", nam, strerror(errno));
	return(-1);
      }

  //memset(inst_map, '\0', sizeof(inst_map));
  ok= DD_TRUE;
  while (ok &&
	 rtyp != 1)
    {
      while (((c= getc(f)) != ':') &&
	     (c != EOF)) ;
      if (c != ':')
	{fprintf(stderr, ": not found\n");break;}
      recnum++;
      dnum= ReadInt(f, &ok, 1);//printf("dnum=%02x",dnum);
      chk = dnum;
      addr= ReadInt(f, &ok, 2);//printf("addr=%04x",addr);
      chk+= (addr & 0xff);
      chk+= ((addr >> 8) & 0xff);
      rtyp= ReadInt(f, &ok, 1);//printf("rtyp=%02x ",rtyp);
      chk+= rtyp;
      for (i= 0; ok && (i < dnum); i++)
	{
	  rec[i]= ReadInt(f, &ok, 1);//printf("%02x",rec[i]);
	  chk+= rec[i];
	}
      if (ok)
	{
	  sum= ReadInt(f, &ok, 1);//printf(" sum=%02x\n",sum);
	  if (ok)
	    {
	      if (((sum + chk) & 0xff) == 0)
		{
		  if (rtyp == 0)
		    {
		      if (get_mem_width(MEM_ROM) > 8)
			addr/= 2;
		      for (i= 0; i < dnum; i++)
			{
			  if (get_mem_width(MEM_ROM) <= 8)
			    {
			      set_mem(MEM_ROM, addr, rec[i]);
			      addr++;
			      written++;
			    }
			  else if (get_mem_width(MEM_ROM) <= 16)
			    {
			      if (get_low)
				{
				  low= rec[i];
				  get_low= 0;
				}
			      else
				{
				  high= rec[i];
				  set_mem(MEM_ROM, addr, (high*256)+low);
				  addr++;
				  written++;
				  get_low= 1;
				}
			    }
			}
		    }
		  else
		    if (sim->app->args->get_iarg('V', 0) &&
			rtyp != 1)
		      sim->app->get_commander()->
			dd_printf("Unknown record type %d(0x%x)\n", rtyp, rtyp);
		}
	      else
		if (sim->app->args->get_iarg('V', 0))
		  sim->app->get_commander()->
		    dd_printf("Checksum error (%x instead of %x) in "
			   "record %ld.\n", chk, sum, recnum);
	    }
	  else
	    if (sim->app->args->get_iarg('V', 0))
	      sim->app->get_commander()->
		dd_printf("Read error in record %ld.\n", recnum);
	}
    }
  if (get_mem_width(MEM_ROM) > 8 &&
      !get_low)
    set_mem(MEM_ROM, addr, low);

  if (nam)
    fclose(f);
  if (sim->app->args->get_iarg('V', 0))
    sim->app->get_commander()->dd_printf("%ld records have been read\n", recnum);
  analyze(0);
  return(written);
}


/*
 * Handling instruction map
 *
 * `inst_at' is checking if the specified address is in instruction
 * map and `set_inst_at' marks the address in the map and
 * `del_inst_at' deletes the mark. `there_is_inst' cheks if there is
 * any mark in the map
 */

bool
cl_uc::inst_at(t_addr addr)
{
  class cl_mem/*rom*/ *rom= /*(class cl_rom *)*/mem(MEM_ROM);
  
  if (!rom)
    return(0);
  //return(rom->inst_map->get(addr));
  return(rom->get_cell_flag(addr, CELL_INST));
}

void
cl_uc::set_inst_at(t_addr addr)
{
  class cl_mem/*rom*/ *rom= /*(class cl_rom *)*/mem(MEM_ROM);
  
  if (rom)
    //rom->inst_map->set(addr);
    rom->set_cell_flag(addr, DD_TRUE, CELL_INST);
}

void
cl_uc::del_inst_at(t_addr addr)
{
  class cl_mem/*rom*/ *rom= /*(class cl_rom *)*/mem(MEM_ROM);
  
  if (rom)
    //rom->inst_map->clear(addr);
    rom->set_cell_flag(addr, DD_FALSE, CELL_INST);
}

bool
cl_uc::there_is_inst(void)
{
  class cl_mem/*rom*/ *rom= /*(class cl_rom *)*/mem(MEM_ROM);
  
  if (!rom)
    return(0);
  //return(!(rom->inst_map->empty()));
  bool got= DD_FALSE;
  t_addr addr;
  for (addr= 0; addr < rom->size && !got; addr++)
    got= rom->get_cell_flag(addr, CELL_INST);
  return(got);
}


/*
 * Manipulating HW elements of the CPU
 *****************************************************************************
 */

/* Register callback hw objects for mem read/write */

/*void
cl_uc::register_hw_read(enum mem_class type, t_addr addr, class cl_hw *hw)
{
  class cl_mem *m;
  class cl_memloc *l;

  if ((m= (class cl_mem*)mems->at(type)))
    {
      if ((l= m->read_locs->get_loc(addr)) == 0)
	{
	  l= new cl_memloc(addr);
	  l->init();
	  m->read_locs->add(l);
	}
      l->hws->add(hw);
    }
  else
    printf("cl_uc::register_hw_read TROUBLE\n");
}*/

/*void
cl_uc::register_hw_write(enum mem_class type, t_addr addr, class cl_hw *hw)
{
}*/

/* Looking for a specific HW element */

class cl_hw *
cl_uc::get_hw(enum hw_cath cath, int *idx)
{
  class cl_hw *hw= 0;
  int i= 0;

  if (idx)
    i= *idx;
  for (; i < hws->count; i++)
    {
      hw= (class cl_hw *)(hws->at(i));
      if (hw->cathegory == cath)
	break;
    }
  if (i >= hws->count)
    return(0);
  if (idx)
    *idx= i;
  return(hw);
}

class cl_hw *
cl_uc::get_hw(char *id_string, int *idx)
{
  class cl_hw *hw= 0;
  int i= 0;

  if (idx)
    i= *idx;
  for (; i < hws->count; i++)
    {
      hw= (class cl_hw *)(hws->at(i));
      if (strstr(hw->id_string, id_string) == hw->id_string)
	break;
    }
  if (i >= hws->count)
    return(0);
  if (idx)
    *idx= i;
  return(hw);
}

class cl_hw *
cl_uc::get_hw(enum hw_cath cath, int hwid, int *idx)
{
  class cl_hw *hw;
  int i= 0;

  if (idx)
    i= *idx;
  hw= get_hw(cath, &i);
  while (hw &&
	 hw->id != hwid)
    {
      i++;
      hw= get_hw(cath, &i);
    }
  if (hw && 
      idx)
    *idx= i;
  return(hw);
}

class cl_hw *
cl_uc::get_hw(char *id_string, int hwid, int *idx)
{
  class cl_hw *hw;
  int i= 0;

  if (idx)
    i= *idx;
  hw= get_hw(id_string, &i);
  while (hw &&
	 hw->id != hwid)
    {
      i++;
      hw= get_hw(id_string, &i);
    }
  if (hw && 
      idx)
    *idx= i;
  return(hw);
}


/*
 * Help of the command interpreter
 */

struct dis_entry *
cl_uc::dis_tbl(void)
{
  static struct dis_entry empty= { 0, 0, 0, 0, NULL };
  return(&empty);
}

struct name_entry *
cl_uc::sfr_tbl(void)
{
  static struct name_entry empty= { 0, 0 };
  return(&empty);
}

struct name_entry *
cl_uc::bit_tbl(void)
{
  static struct name_entry empty= { 0, 0 };
  return(&empty);
}

char *
cl_uc::disass(t_addr addr, char *sep)
{
  char *buf;

  buf= (char*)malloc(100);
  strcpy(buf, "uc::disass() unimplemented\n");
  return(buf);
}

void
cl_uc::print_disass(t_addr addr, class cl_console *con)
{
  char *dis;
  class cl_brk *b;
  int i;
  class cl_mem *rom= mem(MEM_ROM);
  t_mem code= get_mem(MEM_ROM, addr);

  if (!rom)
    return;
  b= fbrk_at(addr);
  dis= disass(addr, NULL);
  if (b)
    con->dd_printf("%c", (b->perm == brkFIX)?'F':'D');
  else
    con->dd_printf(" ");
  con->dd_printf("%c ", inst_at(addr)?' ':'?');
  con->dd_printf(rom->addr_format, addr); con->dd_printf(" ");
  con->dd_printf(rom->data_format, code);
  for (i= 1; i < inst_length(addr); i++)
    {
      con->dd_printf(" ");
      con->dd_printf(rom->data_format, get_mem(MEM_ROM, addr+i));
    }
  int li= longest_inst();
  while (i < li)
    {
      int j;
      j= rom->width/4 + ((rom->width%4)?1:0) + 1;
      while (j)
	con->dd_printf(" "), j--;
      i++;
    }
  con->dd_printf(" %s\n", dis);
  free(dis);
}

void
cl_uc::print_regs(class cl_console *con)
{
  con->dd_printf("No registers\n");
}

int
cl_uc::inst_length(t_addr addr)
{
  struct dis_entry *tabl= dis_tbl();
  int i;
  t_mem code;

  code = get_mem(MEM_ROM, addr);
  for (i= 0; tabl[i].mnemonic && (code & tabl[i].mask) != tabl[i].code; i++) ;
  return(tabl[i].mnemonic?tabl[i].length:1);
}

int
cl_uc::inst_branch(t_addr addr)
{
  struct dis_entry *tabl= dis_tbl();
  int i;
  t_mem code;

  code = get_mem(MEM_ROM, addr);
  for (i= 0; tabl[i].mnemonic && (code & tabl[i].mask) != tabl[i].code; i++)
    ;
  return tabl[i].branch;
}

int
cl_uc::longest_inst(void)
{
  struct dis_entry *de= dis_tbl();
  int max= 0;

  while (de &&
	 de->mnemonic)
    {
      if (de->length > max)
	max= de->length;
      de++;
    }
  return(max);
}

bool
cl_uc::get_name(t_addr addr, struct name_entry tab[], char *buf)
{
  int i;

  i= 0;
  while (tab[i].name &&
	 (!(tab[i].cpu_type & type) ||
	 (tab[i].addr != addr)))
    i++;
  if (tab[i].name)
    strcpy(buf, tab[i].name);
  return(tab[i].name != NULL);
}

char *
cl_uc::symbolic_bit_name(t_addr bit_address,
			 class cl_mem *mem,
			 t_addr mem_addr,
			 t_mem bit_mask)
{
  char *sym_name= 0;
  int i;

  i= 0;
  while (bit_tbl()[i].name &&
	 (bit_tbl()[i].addr != bit_address))
    i++;
  if (bit_tbl()[i].name)
    {
      sym_name= strdup(bit_tbl()[i].name);
      return(sym_name);
    }

  if (mem &&
      mem->class_name &&
      strstr(mem->class_name, "sfr") == mem->class_name)
    {
      i= 0;
      while (sfr_tbl()[i].name &&
	     (sfr_tbl()[i].addr != mem_addr))
	i++;
      if (sfr_tbl()[i].name)
	sym_name= strdup(sfr_tbl()[i].name);