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/* tc-moxie.c -- Assemble code for moxie
   Copyright 2009
   Free Software Foundation, Inc.
 
   This file is part of GAS, the GNU Assembler.
 
   GAS is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.
 
   GAS is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with GAS; see the file COPYING.  If not, write to
   the Free Software Foundation, 51 Franklin Street - Fifth Floor,
   Boston, MA 02110-1301, USA.  */
 
/* Contributed by Anthony Green <green@moxielogic.com>.  */
 
#include "as.h"
#include "safe-ctype.h"
#include "opcode/moxie.h"
#include "elf/moxie.h"
 
extern const moxie_opc_info_t moxie_opc_info[128];
 
const char comment_chars[]        = "#";
const char line_separator_chars[] = ";";
const char line_comment_chars[]   = "#";
 
static int pending_reloc;
static struct hash_control *opcode_hash_control;
 
const pseudo_typeS md_pseudo_table[] =
{
  {0, 0, 0}
};
 
const char FLT_CHARS[] = "rRsSfFdDxXpP";
const char EXP_CHARS[] = "eE";
 
static int md_chars_to_number (char *val, int n);
 
void
md_operand (expressionS *op __attribute__((unused)))
{
  /* Empty for now. */
}
 
/* This function is called once, at assembler startup time.  It sets
   up the hash table with all the opcodes in it, and also initializes
   some aliases for compatibility with other assemblers.  */
 
void
md_begin (void)
{
  int count;
  const moxie_opc_info_t *opcode;
  opcode_hash_control = hash_new ();
 
  /* Insert names into hash table.  */
  for (count = 0, opcode = moxie_form1_opc_info; count++ < 64; opcode++)
    hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
 
  for (count = 0, opcode = moxie_form2_opc_info; count++ < 4; opcode++)
    hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
 
  for (count = 0, opcode = moxie_form3_opc_info; count++ < 10; opcode++)
    hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
 
  bfd_set_arch_mach (stdoutput, TARGET_ARCH, 0);
}
 
/* Parse an expression and then restore the input line pointer.  */
 
static char *
parse_exp_save_ilp (char *s, expressionS *op)
{
  char *save = input_line_pointer;
 
  input_line_pointer = s;
  expression (op);
  s = input_line_pointer;
  input_line_pointer = save;
  return s;
}
 
static int
parse_register_operand (char **ptr)
{
  int reg;
  char *s = *ptr;
 
  if (*s != '$')
    {
      as_bad (_("expecting register"));
      ignore_rest_of_line ();
      return -1;
    }
  if (s[1] == 'f' && s[2] == 'p')
    {
      *ptr += 3;
      return 0;
    }
  if (s[1] == 's' && s[2] == 'p')
    {
      *ptr += 3;
      return 1;
    }
  if (s[1] == 'r')
    {
      reg = s[2] - '0';
      if ((reg < 0) || (reg > 9))
        {
          as_bad (_("illegal register number"));
          ignore_rest_of_line ();
          return -1;
        }
      if (reg == 1)
        {
          int r2 = s[3] - '0';
          if ((r2 >= 0) && (r2 <= 3))
            {
              reg = 10 + r2;
              *ptr += 1;
            }
        }
    }
  else
    {
      as_bad (_("illegal register number"));
      ignore_rest_of_line ();
      return -1;
    }
 
  *ptr += 3;
 
  return reg + 2;
}
 
/* This is the guts of the machine-dependent assembler.  STR points to
   a machine dependent instruction.  This function is supposed to emit
   the frags/bytes it assembles to.  */
 
void
md_assemble (char *str)
{
  char *op_start;
  char *op_end;
 
  moxie_opc_info_t *opcode;
  char *p;
  char pend;
 
  unsigned short iword = 0;
 
  int nlen = 0;
 
  /* Drop leading whitespace.  */
  while (*str == ' ')
    str++;
 
  /* Find the op code end.  */
  op_start = str;
  for (op_end = str;
       *op_end && !is_end_of_line[*op_end & 0xff] && *op_end != ' ';
       op_end++)
    nlen++;
 
  pend = *op_end;
  *op_end = 0;
 
  if (nlen == 0)
    as_bad (_("can't find opcode "));
  opcode = (moxie_opc_info_t *) hash_find (opcode_hash_control, op_start);
  *op_end = pend;
 
  if (opcode == NULL)
    {
      as_bad (_("unknown opcode %s"), op_start);
      return;
    }
 
  p = frag_more (2);
 
  switch (opcode->itype)
    {
    case MOXIE_F2_A8V:
      iword = (1<<15) | (opcode->opcode << 12);
      while (ISSPACE (*op_end))
        op_end++;
      {
        expressionS arg;
        int reg;
        reg = parse_register_operand (&op_end);
        iword += (reg << 8);
        if (*op_end != ',')
          as_warn (_("expecting comma delimited register operands"));
        op_end++;
        op_end = parse_exp_save_ilp (op_end, &arg);
        fix_new_exp (frag_now,
                     ((p+1) - frag_now->fr_literal),
                     1,
                     &arg,
                     0,
                     BFD_RELOC_8);
      }
      break;
    case MOXIE_F1_AB:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        int dest, src;
        dest = parse_register_operand (&op_end);
        if (*op_end != ',')
          as_warn (_("expecting comma delimited register operands"));
        op_end++;
        src  = parse_register_operand (&op_end);
        iword += (dest << 4) + src;
        while (ISSPACE (*op_end))
          op_end++;
        if (*op_end != 0)
          as_warn (_("extra stuff on line ignored"));
      }
      break;
    case MOXIE_F1_A4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        expressionS arg;
        char *where;
        int regnum;
 
        regnum = parse_register_operand (&op_end);
        while (ISSPACE (*op_end))
          op_end++;
 
        iword += (regnum << 4);
 
        if (*op_end != ',')
          {
            as_bad (_("expecting comma delimited operands"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
 
        op_end = parse_exp_save_ilp (op_end, &arg);
        where = frag_more (4);
        fix_new_exp (frag_now,
                     (where - frag_now->fr_literal),
                     4,
                     &arg,
                     0,
                     BFD_RELOC_32);
      }
      break;
    case MOXIE_F1_M:
    case MOXIE_F1_4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        expressionS arg;
        char *where;
 
        op_end = parse_exp_save_ilp (op_end, &arg);
        where = frag_more (4);
        fix_new_exp (frag_now,
                     (where - frag_now->fr_literal),
                     4,
                     &arg,
                     0,
                     BFD_RELOC_32);
      }
      break;
    case MOXIE_F1_NARG:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      if (*op_end != 0)
        as_warn (_("extra stuff on line ignored"));
      break;
    case MOXIE_F1_A:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        int reg;
        reg = parse_register_operand (&op_end);
        while (ISSPACE (*op_end))
          op_end++;
        if (*op_end != 0)
          as_warn (_("extra stuff on line ignored"));
        iword += (reg << 4);
      }
      break;
    case MOXIE_F1_ABi:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        int a, b;
        a = parse_register_operand (&op_end);
        if (*op_end != ',')
          as_warn (_("expecting comma delimited register operands"));
        op_end++;
        if (*op_end != '(')
          {
            as_bad (_("expecting indirect register `($rA)'"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
        b = parse_register_operand (&op_end);
        if (*op_end != ')')
          {
            as_bad (_("missing closing parenthesis"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
        iword += (a << 4) + b;
        while (ISSPACE (*op_end))
          op_end++;
        if (*op_end != 0)
          as_warn (_("extra stuff on line ignored"));
      }
      break;
    case MOXIE_F1_AiB:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        int a, b;
        if (*op_end != '(')
          {
            as_bad (_("expecting indirect register `($rA)'"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
        a = parse_register_operand (&op_end);
        if (*op_end != ')')
          {
            as_bad (_("missing closing parenthesis"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
        if (*op_end != ',')
          as_warn (_("expecting comma delimited register operands"));
        op_end++;
        b = parse_register_operand (&op_end);
        iword += (a << 4) + b;
        while (ISSPACE (*op_end))
          op_end++;
        if (*op_end != 0)
          as_warn (_("extra stuff on line ignored"));
      }
      break;
    case MOXIE_F1_4A:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        expressionS arg;
        char *where;
        int a;
 
        op_end = parse_exp_save_ilp (op_end, &arg);
        where = frag_more (4);
        fix_new_exp (frag_now,
                     (where - frag_now->fr_literal),
                     4,
                     &arg,
                     0,
                     BFD_RELOC_32);
 
        if (*op_end != ',')
          {
            as_bad (_("expecting comma delimited operands"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
 
        a = parse_register_operand (&op_end);
        while (ISSPACE (*op_end))
          op_end++;
        if (*op_end != 0)
          as_warn (_("extra stuff on line ignored"));
 
        iword += (a << 4);
      }
      break;
    case MOXIE_F1_ABi4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        expressionS arg;
        char *offset;
        int a, b;
 
        a = parse_register_operand (&op_end);
        while (ISSPACE (*op_end))
          op_end++;
 
        if (*op_end != ',')
          {
            as_bad (_("expecting comma delimited operands"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
 
        op_end = parse_exp_save_ilp (op_end, &arg);
        offset = frag_more (4);
        fix_new_exp (frag_now,
                     (offset - frag_now->fr_literal),
                     4,
                     &arg,
                     0,
                     BFD_RELOC_32);
 
        if (*op_end != '(')
          {
            as_bad (_("expecting indirect register `($rX)'"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
        b = parse_register_operand (&op_end);
        if (*op_end != ')')
          {
            as_bad (_("missing closing parenthesis"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
 
        while (ISSPACE (*op_end))
          op_end++;
        if (*op_end != 0)
          as_warn (_("extra stuff on line ignored"));
 
        iword += (a << 4) + b;
      }
      break;
    case MOXIE_F1_AiB4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
        op_end++;
      {
        expressionS arg;
        char *offset;
        int a, b;
 
        op_end = parse_exp_save_ilp (op_end, &arg);
        offset = frag_more (4);
        fix_new_exp (frag_now,
                     (offset - frag_now->fr_literal),
                     4,
                     &arg,
                     0,
                     BFD_RELOC_32);
 
        if (*op_end != '(')
          {
            as_bad (_("expecting indirect register `($rX)'"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
        a = parse_register_operand (&op_end);
        if (*op_end != ')')
          {
            as_bad (_("missing closing parenthesis"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
 
        if (*op_end != ',')
          {
            as_bad (_("expecting comma delimited operands"));
            ignore_rest_of_line ();
            return;
          }
        op_end++;
 
        b = parse_register_operand (&op_end);
        while (ISSPACE (*op_end))
          op_end++;
 
        while (ISSPACE (*op_end))
          op_end++;
        if (*op_end != 0)
          as_warn (_("extra stuff on line ignored"));
 
        iword += (a << 4) + b;
      }
      break;
    case MOXIE_F2_NARG:
      iword = opcode->opcode << 12;
      while (ISSPACE (*op_end))
        op_end++;
      if (*op_end != 0)
        as_warn (_("extra stuff on line ignored"));
      break;
    case MOXIE_F3_PCREL:
      iword = (3<<14) | (opcode->opcode << 10);
      while (ISSPACE (*op_end))
        op_end++;
      {
        expressionS arg;
 
        op_end = parse_exp_save_ilp (op_end, &arg);
        fix_new_exp (frag_now,
                     (p - frag_now->fr_literal),
                     2,
                     &arg,
                     TRUE,
                     BFD_RELOC_MOXIE_10_PCREL);
      }
      break;
    default:
      abort ();
    }
 
  md_number_to_chars (p, iword, 2);
 
  while (ISSPACE (*op_end))
    op_end++;
 
  if (*op_end != 0)
    as_warn (_("extra stuff on line ignored"));
 
  if (pending_reloc)
    as_bad (_("Something forgot to clean up\n"));
}
 
/* Turn a string in input_line_pointer into a floating point constant
   of type type, and store the appropriate bytes in *LITP.  The number
   of LITTLENUMS emitted is stored in *SIZEP .  An error message is
   returned, or NULL on OK.  */
 
char *
md_atof (int type, char *litP, int *sizeP)
{
  int prec;
  LITTLENUM_TYPE words[4];
  char *t;
  int i;
 
  switch (type)
    {
    case 'f':
      prec = 2;
      break;
 
    case 'd':
      prec = 4;
      break;
 
    default:
      *sizeP = 0;
      return _("bad call to md_atof");
    }
 
  t = atof_ieee (input_line_pointer, type, words);
  if (t)
    input_line_pointer = t;
 
  *sizeP = prec * 2;
 
  for (i = prec - 1; i >= 0; i--)
    {
      md_number_to_chars (litP, (valueT) words[i], 2);
      litP += 2;
    }
 
  return NULL;
}
 
const char *md_shortopts = "";
 
struct option md_longopts[] =
{
  {NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);
 
/* We have no target specific options yet, so these next
   two functions are empty.  */
int
md_parse_option (int c ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED)
{
  return 0;
}
 
void
md_show_usage (FILE *stream ATTRIBUTE_UNUSED)
{
}
 
/* Apply a fixup to the object file.  */
 
void
md_apply_fix (fixS *fixP ATTRIBUTE_UNUSED,
              valueT * valP ATTRIBUTE_UNUSED, segT seg ATTRIBUTE_UNUSED)
{
  char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
  long val = *valP;
  long newval;
  long max, min;
  int shift;
 
  max = min = 0;
  shift = 0;
  switch (fixP->fx_r_type)
    {
    case BFD_RELOC_32:
      *buf++ = val >> 24;
      *buf++ = val >> 16;
      *buf++ = val >> 8;
      *buf++ = val >> 0;
      break;
 
    case BFD_RELOC_16:
      *buf++ = val >> 8;
      *buf++ = val >> 0;
      break;
 
    case BFD_RELOC_8:
      *buf++ = val;
      break;
 
    case BFD_RELOC_MOXIE_10_PCREL:
      if (!val)
        break;
      if (val < -1024 || val > 1022)
        as_bad_where (fixP->fx_file, fixP->fx_line,
                      _("pcrel too far BFD_RELOC_MOXIE_10"));
      /* 11 bit offset even numbered, so we remove right bit.  */
      val >>= 1;
      newval = md_chars_to_number (buf, 2);
      newval |= val & 0x03ff;
      md_number_to_chars (buf, newval, 2);
      break;
 
    default:
      abort ();
    }
 
  if (max != 0 && (val < min || val > max))
    as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range"));
 
  if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
    fixP->fx_done = 1;
}
 
/* Put number into target byte order (big endian).  */
 
void
md_number_to_chars (char *ptr, valueT use, int nbytes)
{
  number_to_chars_bigendian (ptr, use, nbytes);
}
 
/* Convert from target byte order to host byte order.  */
 
static int
md_chars_to_number (char *val, int n)
{
  int retval = 0;
 
  while (n--)
    {
      retval <<= 8;
      retval |= (*val++ & 255);
    }
 
  return retval;
}
 
/* Generate a machine-dependent relocation.  */
arelent *
tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixP)
{
  arelent *relP;
  bfd_reloc_code_real_type code;
 
  switch (fixP->fx_r_type)
    {
    case BFD_RELOC_32:
      code = fixP->fx_r_type;
      break;
    case BFD_RELOC_MOXIE_10_PCREL:
      code = fixP->fx_r_type;
      break;
    default:
      as_bad_where (fixP->fx_file, fixP->fx_line,
                    _("Semantics error.  This type of operand can not be relocated, it must be an assembly-time constant"));
      return 0;
    }
 
  relP = xmalloc (sizeof (arelent));
  gas_assert (relP != 0);
  relP->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
  *relP->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
  relP->address = fixP->fx_frag->fr_address + fixP->fx_where;
 
  relP->addend = fixP->fx_offset;
 
  /* This is the standard place for KLUDGEs to work around bugs in
     bfd_install_relocation (first such note in the documentation
     appears with binutils-2.8).
 
     That function bfd_install_relocation does the wrong thing with
     putting stuff into the addend of a reloc (it should stay out) for a
     weak symbol.  The really bad thing is that it adds the
     "segment-relative offset" of the symbol into the reloc.  In this
     case, the reloc should instead be relative to the symbol with no
     other offset than the assembly code shows; and since the symbol is
     weak, any local definition should be ignored until link time (or
     thereafter).
     To wit:  weaksym+42  should be weaksym+42 in the reloc,
     not weaksym+(offset_from_segment_of_local_weaksym_definition)
 
     To "work around" this, we subtract the segment-relative offset of
     "known" weak symbols.  This evens out the extra offset.
 
     That happens for a.out but not for ELF, since for ELF,
     bfd_install_relocation uses the "special function" field of the
     howto, and does not execute the code that needs to be undone.  */
 
  if (OUTPUT_FLAVOR == bfd_target_aout_flavour
      && fixP->fx_addsy && S_IS_WEAK (fixP->fx_addsy)
      && ! bfd_is_und_section (S_GET_SEGMENT (fixP->fx_addsy)))
    {
      relP->addend -= S_GET_VALUE (fixP->fx_addsy);
    }
 
  relP->howto = bfd_reloc_type_lookup (stdoutput, code);
  if (! relP->howto)
    {
      const char *name;
 
      name = S_GET_NAME (fixP->fx_addsy);
      if (name == NULL)
        name = _("<unknown>");
      as_fatal (_("Cannot generate relocation type for symbol %s, code %s"),
                name, bfd_get_reloc_code_name (code));
    }
 
  return relP;
}
 
/* Decide from what point a pc-relative relocation is relative to,
   relative to the pc-relative fixup.  Er, relatively speaking.  */
long
md_pcrel_from (fixS *fixP)
{
  valueT addr = fixP->fx_where + fixP->fx_frag->fr_address;
 
  switch (fixP->fx_r_type)
    {
    case BFD_RELOC_32:
      return addr + 4;
    case BFD_RELOC_MOXIE_10_PCREL:
      return addr;
    default:
      abort ();
      return addr;
    }
}

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[/] [openrisc/] [trunk/] [gnu-stable/] [binutils-2.20.1/] [gas/] [config/] [tc-moxie.c] - Blame information for rev 205

Line No.	Rev	Author	Line
1	205	julius	`/* tc-moxie.c -- Assemble code for moxie`
2			`Copyright 2009`
3			`Free Software Foundation, Inc.`
4
5			`This file is part of GAS, the GNU Assembler.`
6
7			`GAS is free software; you can redistribute it and/or modify`
8			`it under the terms of the GNU General Public License as published by`
9			`the Free Software Foundation; either version 3, or (at your option)`
10			`any later version.`
11
12			`GAS is distributed in the hope that it will be useful,`
13			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
14			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
15			`GNU General Public License for more details.`
16
17			`You should have received a copy of the GNU General Public License`
18			`along with GAS; see the file COPYING. If not, write to`
19			`the Free Software Foundation, 51 Franklin Street - Fifth Floor,`
20			`Boston, MA 02110-1301, USA. */`
21
22			`/* Contributed by Anthony Green <green@moxielogic.com>. */`
23
24			`#include "as.h"`
25			`#include "safe-ctype.h"`
26			`#include "opcode/moxie.h"`
27			`#include "elf/moxie.h"`
28
29			`extern const moxie_opc_info_t moxie_opc_info[128];`
30
31			`const char comment_chars[] = "#";`
32			`const char line_separator_chars[] = ";";`
33			`const char line_comment_chars[] = "#";`
34
35			`static int pending_reloc;`
36			`static struct hash_control *opcode_hash_control;`
37
38			`const pseudo_typeS md_pseudo_table[] =`
39			`{`
40			`{0, 0, 0}`
41			`};`
42
43			`const char FLT_CHARS[] = "rRsSfFdDxXpP";`
44			`const char EXP_CHARS[] = "eE";`
45
46			`static int md_chars_to_number (char *val, int n);`
47
48			`void`
49			`md_operand (expressionS *op __attribute__((unused)))`
50			`{`
51			`/* Empty for now. */`
52			`}`
53
54			`/* This function is called once, at assembler startup time. It sets`
55			`up the hash table with all the opcodes in it, and also initializes`
56			`some aliases for compatibility with other assemblers. */`
57
58			`void`
59			`md_begin (void)`
60			`{`
61			`int count;`
62			`const moxie_opc_info_t *opcode;`
63			`opcode_hash_control = hash_new ();`
64
65			`/* Insert names into hash table. */`
66			`for (count = 0, opcode = moxie_form1_opc_info; count++ < 64; opcode++)`
67			`hash_insert (opcode_hash_control, opcode->name, (char *) opcode);`
68
69			`for (count = 0, opcode = moxie_form2_opc_info; count++ < 4; opcode++)`
70			`hash_insert (opcode_hash_control, opcode->name, (char *) opcode);`
71
72			`for (count = 0, opcode = moxie_form3_opc_info; count++ < 10; opcode++)`
73			`hash_insert (opcode_hash_control, opcode->name, (char *) opcode);`
74
75			`bfd_set_arch_mach (stdoutput, TARGET_ARCH, 0);`
76			`}`
77
78			`/* Parse an expression and then restore the input line pointer. */`
79
80			`static char *`
81			`parse_exp_save_ilp (char s, expressionS op)`
82			`{`
83			`char *save = input_line_pointer;`
84
85			`input_line_pointer = s;`
86			`expression (op);`
87			`s = input_line_pointer;`
88			`input_line_pointer = save;`
89			`return s;`
90			`}`
91
92			`static int`
93			`parse_register_operand (char **ptr)`
94			`{`
95			`int reg;`
96			`char s = ptr;`
97
98			`if (*s != '$')`
99			`{`
100			`as_bad (_("expecting register"));`
101			`ignore_rest_of_line ();`
102			`return -1;`
103			`}`
104			`if (s[1] == 'f' && s[2] == 'p')`
105			`{`
106			`*ptr += 3;`
107			`return 0;`
108			`}`
109			`if (s[1] == 's' && s[2] == 'p')`
110			`{`
111			`*ptr += 3;`
112			`return 1;`
113			`}`
114			`if (s[1] == 'r')`
115			`{`
116			`reg = s[2] - '0';`
117			`if ((reg < 0) \|\| (reg > 9))`
118			`{`
119			`as_bad (_("illegal register number"));`
120			`ignore_rest_of_line ();`
121			`return -1;`
122			`}`
123			`if (reg == 1)`
124			`{`
125			`int r2 = s[3] - '0';`
126			`if ((r2 >= 0) && (r2 <= 3))`
127			`{`
128			`reg = 10 + r2;`
129			`*ptr += 1;`
130			`}`
131			`}`
132			`}`
133			`else`
134			`{`
135			`as_bad (_("illegal register number"));`
136			`ignore_rest_of_line ();`
137			`return -1;`
138			`}`
139
140			`*ptr += 3;`
141
142			`return reg + 2;`
143			`}`
144
145			`/* This is the guts of the machine-dependent assembler. STR points to`
146			`a machine dependent instruction. This function is supposed to emit`
147			`the frags/bytes it assembles to. */`
148
149			`void`
150			`md_assemble (char *str)`
151			`{`
152			`char *op_start;`
153			`char *op_end;`
154
155			`moxie_opc_info_t *opcode;`
156			`char *p;`
157			`char pend;`
158
159			`unsigned short iword = 0;`
160
161			`int nlen = 0;`
162
163			`/* Drop leading whitespace. */`
164			`while (*str == ' ')`
165			`str++;`
166
167			`/* Find the op code end. */`
168			`op_start = str;`
169			`for (op_end = str;`
170			`op_end && !is_end_of_line[op_end & 0xff] && *op_end != ' ';`
171			`op_end++)`
172			`nlen++;`
173
174			`pend = *op_end;`
175			`*op_end = 0;`
176
177			`if (nlen == 0)`
178			`as_bad (_("can't find opcode "));`
179			`opcode = (moxie_opc_info_t *) hash_find (opcode_hash_control, op_start);`
180			`*op_end = pend;`
181
182			`if (opcode == NULL)`
183			`{`
184			`as_bad (_("unknown opcode %s"), op_start);`
185			`return;`
186			`}`
187
188			`p = frag_more (2);`
189
190			`switch (opcode->itype)`
191			`{`
192			`case MOXIE_F2_A8V:`
193			`iword = (1<<15) \| (opcode->opcode << 12);`
194			`while (ISSPACE (*op_end))`
195			`op_end++;`
196			`{`
197			`expressionS arg;`
198			`int reg;`
199			`reg = parse_register_operand (&op_end);`
200			`iword += (reg << 8);`
201			`if (*op_end != ',')`
202			`as_warn (_("expecting comma delimited register operands"));`
203			`op_end++;`
204			`op_end = parse_exp_save_ilp (op_end, &arg);`
205			`fix_new_exp (frag_now,`
206			`((p+1) - frag_now->fr_literal),`
207			`1,`
208			`&arg,`
209			`0,`
210			`BFD_RELOC_8);`
211			`}`
212			`break;`
213			`case MOXIE_F1_AB:`
214			`iword = opcode->opcode << 8;`
215			`while (ISSPACE (*op_end))`
216			`op_end++;`
217			`{`
218			`int dest, src;`
219			`dest = parse_register_operand (&op_end);`
220			`if (*op_end != ',')`
221			`as_warn (_("expecting comma delimited register operands"));`
222			`op_end++;`
223			`src = parse_register_operand (&op_end);`
224			`iword += (dest << 4) + src;`
225			`while (ISSPACE (*op_end))`
226			`op_end++;`
227			`if (*op_end != 0)`
228			`as_warn (_("extra stuff on line ignored"));`
229			`}`
230			`break;`
231			`case MOXIE_F1_A4:`
232			`iword = opcode->opcode << 8;`
233			`while (ISSPACE (*op_end))`
234			`op_end++;`
235			`{`
236			`expressionS arg;`
237			`char *where;`
238			`int regnum;`
239
240			`regnum = parse_register_operand (&op_end);`
241			`while (ISSPACE (*op_end))`
242			`op_end++;`
243
244			`iword += (regnum << 4);`
245
246			`if (*op_end != ',')`
247			`{`
248			`as_bad (_("expecting comma delimited operands"));`
249			`ignore_rest_of_line ();`
250			`return;`
251			`}`
252			`op_end++;`
253
254			`op_end = parse_exp_save_ilp (op_end, &arg);`
255			`where = frag_more (4);`
256			`fix_new_exp (frag_now,`
257			`(where - frag_now->fr_literal),`
258			`4,`
259			`&arg,`
260			`0,`
261			`BFD_RELOC_32);`
262			`}`
263			`break;`
264			`case MOXIE_F1_M:`
265			`case MOXIE_F1_4:`
266			`iword = opcode->opcode << 8;`
267			`while (ISSPACE (*op_end))`
268			`op_end++;`
269			`{`
270			`expressionS arg;`
271			`char *where;`
272
273			`op_end = parse_exp_save_ilp (op_end, &arg);`
274			`where = frag_more (4);`
275			`fix_new_exp (frag_now,`
276			`(where - frag_now->fr_literal),`
277			`4,`
278			`&arg,`
279			`0,`
280			`BFD_RELOC_32);`
281			`}`
282			`break;`
283			`case MOXIE_F1_NARG:`
284			`iword = opcode->opcode << 8;`
285			`while (ISSPACE (*op_end))`
286			`op_end++;`
287			`if (*op_end != 0)`
288			`as_warn (_("extra stuff on line ignored"));`
289			`break;`
290			`case MOXIE_F1_A:`
291			`iword = opcode->opcode << 8;`
292			`while (ISSPACE (*op_end))`
293			`op_end++;`
294			`{`
295			`int reg;`
296			`reg = parse_register_operand (&op_end);`
297			`while (ISSPACE (*op_end))`
298			`op_end++;`
299			`if (*op_end != 0)`
300			`as_warn (_("extra stuff on line ignored"));`
301			`iword += (reg << 4);`
302			`}`
303			`break;`
304			`case MOXIE_F1_ABi:`
305			`iword = opcode->opcode << 8;`
306			`while (ISSPACE (*op_end))`
307			`op_end++;`
308			`{`
309			`int a, b;`
310			`a = parse_register_operand (&op_end);`
311			`if (*op_end != ',')`
312			`as_warn (_("expecting comma delimited register operands"));`
313			`op_end++;`
314			`if (*op_end != '(')`
315			`{`
316			as_bad (_("expecting indirect register `($rA)'"));
317			`ignore_rest_of_line ();`
318			`return;`
319			`}`
320			`op_end++;`
321			`b = parse_register_operand (&op_end);`
322			`if (*op_end != ')')`
323			`{`
324			`as_bad (_("missing closing parenthesis"));`
325			`ignore_rest_of_line ();`
326			`return;`
327			`}`
328			`op_end++;`
329			`iword += (a << 4) + b;`
330			`while (ISSPACE (*op_end))`
331			`op_end++;`
332			`if (*op_end != 0)`
333			`as_warn (_("extra stuff on line ignored"));`
334			`}`
335			`break;`
336			`case MOXIE_F1_AiB:`
337			`iword = opcode->opcode << 8;`
338			`while (ISSPACE (*op_end))`
339			`op_end++;`
340			`{`
341			`int a, b;`
342			`if (*op_end != '(')`
343			`{`
344			as_bad (_("expecting indirect register `($rA)'"));
345			`ignore_rest_of_line ();`
346			`return;`
347			`}`
348			`op_end++;`
349			`a = parse_register_operand (&op_end);`
350			`if (*op_end != ')')`
351			`{`
352			`as_bad (_("missing closing parenthesis"));`
353			`ignore_rest_of_line ();`
354			`return;`
355			`}`
356			`op_end++;`
357			`if (*op_end != ',')`
358			`as_warn (_("expecting comma delimited register operands"));`
359			`op_end++;`
360			`b = parse_register_operand (&op_end);`
361			`iword += (a << 4) + b;`
362			`while (ISSPACE (*op_end))`
363			`op_end++;`
364			`if (*op_end != 0)`
365			`as_warn (_("extra stuff on line ignored"));`
366			`}`
367			`break;`
368			`case MOXIE_F1_4A:`
369			`iword = opcode->opcode << 8;`
370			`while (ISSPACE (*op_end))`
371			`op_end++;`
372			`{`
373			`expressionS arg;`
374			`char *where;`
375			`int a;`
376
377			`op_end = parse_exp_save_ilp (op_end, &arg);`
378			`where = frag_more (4);`
379			`fix_new_exp (frag_now,`
380			`(where - frag_now->fr_literal),`
381			`4,`
382			`&arg,`
383			`0,`
384			`BFD_RELOC_32);`
385
386			`if (*op_end != ',')`
387			`{`
388			`as_bad (_("expecting comma delimited operands"));`
389			`ignore_rest_of_line ();`
390			`return;`
391			`}`
392			`op_end++;`
393
394			`a = parse_register_operand (&op_end);`
395			`while (ISSPACE (*op_end))`
396			`op_end++;`
397			`if (*op_end != 0)`
398			`as_warn (_("extra stuff on line ignored"));`
399
400			`iword += (a << 4);`
401			`}`
402			`break;`
403			`case MOXIE_F1_ABi4:`
404			`iword = opcode->opcode << 8;`
405			`while (ISSPACE (*op_end))`
406			`op_end++;`
407			`{`
408			`expressionS arg;`
409			`char *offset;`
410			`int a, b;`
411
412			`a = parse_register_operand (&op_end);`
413			`while (ISSPACE (*op_end))`
414			`op_end++;`
415
416			`if (*op_end != ',')`
417			`{`
418			`as_bad (_("expecting comma delimited operands"));`
419			`ignore_rest_of_line ();`
420			`return;`
421			`}`
422			`op_end++;`
423
424			`op_end = parse_exp_save_ilp (op_end, &arg);`
425			`offset = frag_more (4);`
426			`fix_new_exp (frag_now,`
427			`(offset - frag_now->fr_literal),`
428			`4,`
429			`&arg,`
430			`0,`
431			`BFD_RELOC_32);`
432
433			`if (*op_end != '(')`
434			`{`
435			as_bad (_("expecting indirect register `($rX)'"));
436			`ignore_rest_of_line ();`
437			`return;`
438			`}`
439			`op_end++;`
440			`b = parse_register_operand (&op_end);`
441			`if (*op_end != ')')`
442			`{`
443			`as_bad (_("missing closing parenthesis"));`
444			`ignore_rest_of_line ();`
445			`return;`
446			`}`
447			`op_end++;`
448
449			`while (ISSPACE (*op_end))`
450			`op_end++;`
451			`if (*op_end != 0)`
452			`as_warn (_("extra stuff on line ignored"));`
453
454			`iword += (a << 4) + b;`
455			`}`
456			`break;`
457			`case MOXIE_F1_AiB4:`
458			`iword = opcode->opcode << 8;`
459			`while (ISSPACE (*op_end))`
460			`op_end++;`
461			`{`
462			`expressionS arg;`
463			`char *offset;`
464			`int a, b;`
465
466			`op_end = parse_exp_save_ilp (op_end, &arg);`
467			`offset = frag_more (4);`
468			`fix_new_exp (frag_now,`
469			`(offset - frag_now->fr_literal),`
470			`4,`
471			`&arg,`
472			`0,`
473			`BFD_RELOC_32);`
474
475			`if (*op_end != '(')`
476			`{`
477			as_bad (_("expecting indirect register `($rX)'"));
478			`ignore_rest_of_line ();`
479			`return;`
480			`}`
481			`op_end++;`
482			`a = parse_register_operand (&op_end);`
483			`if (*op_end != ')')`
484			`{`
485			`as_bad (_("missing closing parenthesis"));`
486			`ignore_rest_of_line ();`
487			`return;`
488			`}`
489			`op_end++;`
490
491			`if (*op_end != ',')`
492			`{`
493			`as_bad (_("expecting comma delimited operands"));`
494			`ignore_rest_of_line ();`
495			`return;`
496			`}`
497			`op_end++;`
498
499			`b = parse_register_operand (&op_end);`
500			`while (ISSPACE (*op_end))`
501			`op_end++;`
502
503			`while (ISSPACE (*op_end))`
504			`op_end++;`
505			`if (*op_end != 0)`
506			`as_warn (_("extra stuff on line ignored"));`
507
508			`iword += (a << 4) + b;`
509			`}`
510			`break;`
511			`case MOXIE_F2_NARG:`
512			`iword = opcode->opcode << 12;`
513			`while (ISSPACE (*op_end))`
514			`op_end++;`
515			`if (*op_end != 0)`
516			`as_warn (_("extra stuff on line ignored"));`
517			`break;`
518			`case MOXIE_F3_PCREL:`
519			`iword = (3<<14) \| (opcode->opcode << 10);`
520			`while (ISSPACE (*op_end))`
521			`op_end++;`
522			`{`
523			`expressionS arg;`
524
525			`op_end = parse_exp_save_ilp (op_end, &arg);`
526			`fix_new_exp (frag_now,`
527			`(p - frag_now->fr_literal),`
528			`2,`
529			`&arg,`
530			`TRUE,`
531			`BFD_RELOC_MOXIE_10_PCREL);`
532			`}`
533			`break;`
534			`default:`
535			`abort ();`
536			`}`
537
538			`md_number_to_chars (p, iword, 2);`
539
540			`while (ISSPACE (*op_end))`
541			`op_end++;`
542
543			`if (*op_end != 0)`
544			`as_warn (_("extra stuff on line ignored"));`
545
546			`if (pending_reloc)`
547			`as_bad (_("Something forgot to clean up\n"));`
548			`}`
549
550			`/* Turn a string in input_line_pointer into a floating point constant`
551			`of type type, and store the appropriate bytes in *LITP. The number`
552			`of LITTLENUMS emitted is stored in *SIZEP . An error message is`
553			`returned, or NULL on OK. */`
554
555			`char *`
556			`md_atof (int type, char litP, int sizeP)`
557			`{`
558			`int prec;`
559			`LITTLENUM_TYPE words[4];`
560			`char *t;`
561			`int i;`
562
563			`switch (type)`
564			`{`
565			`case 'f':`
566			`prec = 2;`
567			`break;`
568
569			`case 'd':`
570			`prec = 4;`
571			`break;`
572
573			`default:`
574			`*sizeP = 0;`
575			`return _("bad call to md_atof");`
576			`}`
577
578			`t = atof_ieee (input_line_pointer, type, words);`
579			`if (t)`
580			`input_line_pointer = t;`
581
582			`sizeP = prec 2;`
583
584			`for (i = prec - 1; i >= 0; i--)`
585			`{`
586			`md_number_to_chars (litP, (valueT) words[i], 2);`
587			`litP += 2;`
588			`}`
589
590			`return NULL;`
591			`}`
592
593			`const char *md_shortopts = "";`
594
595			`struct option md_longopts[] =`
596			`{`
597			`{NULL, no_argument, NULL, 0}`
598			`};`
599			`size_t md_longopts_size = sizeof (md_longopts);`
600
601			`/* We have no target specific options yet, so these next`
602			`two functions are empty. */`
603			`int`
604			`md_parse_option (int c ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED)`
605			`{`
606			`return 0;`
607			`}`
608
609			`void`
610			`md_show_usage (FILE *stream ATTRIBUTE_UNUSED)`
611			`{`
612			`}`
613
614			`/* Apply a fixup to the object file. */`
615
616			`void`
617			`md_apply_fix (fixS *fixP ATTRIBUTE_UNUSED,`
618			`valueT * valP ATTRIBUTE_UNUSED, segT seg ATTRIBUTE_UNUSED)`
619			`{`
620			`char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;`
621			`long val = *valP;`
622			`long newval;`
623			`long max, min;`
624			`int shift;`
625
626			`max = min = 0;`
627			`shift = 0;`
628			`switch (fixP->fx_r_type)`
629			`{`
630			`case BFD_RELOC_32:`
631			`*buf++ = val >> 24;`
632			`*buf++ = val >> 16;`
633			`*buf++ = val >> 8;`
634			`*buf++ = val >> 0;`
635			`break;`
636
637			`case BFD_RELOC_16:`
638			`*buf++ = val >> 8;`
639			`*buf++ = val >> 0;`
640			`break;`
641
642			`case BFD_RELOC_8:`
643			`*buf++ = val;`
644			`break;`
645
646			`case BFD_RELOC_MOXIE_10_PCREL:`
647			`if (!val)`
648			`break;`
649			`if (val < -1024 \|\| val > 1022)`
650			`as_bad_where (fixP->fx_file, fixP->fx_line,`
651			`_("pcrel too far BFD_RELOC_MOXIE_10"));`
652			`/* 11 bit offset even numbered, so we remove right bit. */`
653			`val >>= 1;`
654			`newval = md_chars_to_number (buf, 2);`
655			`newval \|= val & 0x03ff;`
656			`md_number_to_chars (buf, newval, 2);`
657			`break;`
658
659			`default:`
660			`abort ();`
661			`}`
662
663			`if (max != 0 && (val < min \|\| val > max))`
664			`as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range"));`
665
666			`if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)`
667			`fixP->fx_done = 1;`
668			`}`
669
670			`/* Put number into target byte order (big endian). */`
671
672			`void`
673			`md_number_to_chars (char *ptr, valueT use, int nbytes)`
674			`{`
675			`number_to_chars_bigendian (ptr, use, nbytes);`
676			`}`
677
678			`/* Convert from target byte order to host byte order. */`
679
680			`static int`
681			`md_chars_to_number (char *val, int n)`
682			`{`
683			`int retval = 0;`
684
685			`while (n--)`
686			`{`
687			`retval <<= 8;`
688			`retval \|= (*val++ & 255);`
689			`}`
690
691			`return retval;`
692			`}`
693
694			`/* Generate a machine-dependent relocation. */`
695			`arelent *`
696			`tc_gen_reloc (asection section ATTRIBUTE_UNUSED, fixS fixP)`
697			`{`
698			`arelent *relP;`
699			`bfd_reloc_code_real_type code;`
700
701			`switch (fixP->fx_r_type)`
702			`{`
703			`case BFD_RELOC_32:`
704			`code = fixP->fx_r_type;`
705			`break;`
706			`case BFD_RELOC_MOXIE_10_PCREL:`
707			`code = fixP->fx_r_type;`
708			`break;`
709			`default:`
710			`as_bad_where (fixP->fx_file, fixP->fx_line,`
711			`_("Semantics error. This type of operand can not be relocated, it must be an assembly-time constant"));`
712			`return 0;`
713			`}`
714
715			`relP = xmalloc (sizeof (arelent));`
716			`gas_assert (relP != 0);`
717			`relP->sym_ptr_ptr = xmalloc (sizeof (asymbol *));`
718			`*relP->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);`
719			`relP->address = fixP->fx_frag->fr_address + fixP->fx_where;`
720
721			`relP->addend = fixP->fx_offset;`
722
723			`/* This is the standard place for KLUDGEs to work around bugs in`
724			`bfd_install_relocation (first such note in the documentation`
725			`appears with binutils-2.8).`
726
727			`That function bfd_install_relocation does the wrong thing with`
728			`putting stuff into the addend of a reloc (it should stay out) for a`
729			`weak symbol. The really bad thing is that it adds the`
730			`"segment-relative offset" of the symbol into the reloc. In this`
731			`case, the reloc should instead be relative to the symbol with no`
732			`other offset than the assembly code shows; and since the symbol is`
733			`weak, any local definition should be ignored until link time (or`
734			`thereafter).`
735			`To wit: weaksym+42 should be weaksym+42 in the reloc,`
736			`not weaksym+(offset_from_segment_of_local_weaksym_definition)`
737
738			`To "work around" this, we subtract the segment-relative offset of`
739			`"known" weak symbols. This evens out the extra offset.`
740
741			`That happens for a.out but not for ELF, since for ELF,`
742			`bfd_install_relocation uses the "special function" field of the`
743			`howto, and does not execute the code that needs to be undone. */`
744
745			`if (OUTPUT_FLAVOR == bfd_target_aout_flavour`
746			`&& fixP->fx_addsy && S_IS_WEAK (fixP->fx_addsy)`
747			`&& ! bfd_is_und_section (S_GET_SEGMENT (fixP->fx_addsy)))`
748			`{`
749			`relP->addend -= S_GET_VALUE (fixP->fx_addsy);`
750			`}`
751
752			`relP->howto = bfd_reloc_type_lookup (stdoutput, code);`
753			`if (! relP->howto)`
754			`{`
755			`const char *name;`
756
757			`name = S_GET_NAME (fixP->fx_addsy);`
758			`if (name == NULL)`
759			`name = _("<unknown>");`
760			`as_fatal (_("Cannot generate relocation type for symbol %s, code %s"),`
761			`name, bfd_get_reloc_code_name (code));`
762			`}`
763
764			`return relP;`
765			`}`
766
767			`/* Decide from what point a pc-relative relocation is relative to,`
768			`relative to the pc-relative fixup. Er, relatively speaking. */`
769			`long`
770			`md_pcrel_from (fixS *fixP)`
771			`{`
772			`valueT addr = fixP->fx_where + fixP->fx_frag->fr_address;`
773
774			`switch (fixP->fx_r_type)`
775			`{`
776			`case BFD_RELOC_32:`
777			`return addr + 4;`
778			`case BFD_RELOC_MOXIE_10_PCREL:`
779			`return addr;`
780			`default:`
781			`abort ();`
782			`return addr;`
783			`}`
784			`}`