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/* tc-rl78.c -- Assembler for the Renesas RL78
   Copyright 2011
   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.  */
 
#include "as.h"
#include "struc-symbol.h"
#include "obstack.h"
#include "safe-ctype.h"
#include "dwarf2dbg.h"
#include "libbfd.h"
#include "elf/common.h"
#include "elf/rl78.h"
#include "rl78-defs.h"
#include "filenames.h"
#include "listing.h"
#include "sb.h"
#include "macro.h"
 
const char comment_chars[]        = ";";
/* Note that input_file.c hand checks for '#' at the beginning of the
   first line of the input file.  This is because the compiler outputs
   #NO_APP at the beginning of its output.  */
const char line_comment_chars[]   = "#";
const char line_separator_chars[] = "|";
 
const char EXP_CHARS[]            = "eE";
const char FLT_CHARS[]            = "dD";
 
/*------------------------------------------------------------------*/
 
char * rl78_lex_start;
char * rl78_lex_end;
 
typedef struct rl78_bytesT
{
  char prefix[1];
  int n_prefix;
  char base[4];
  int n_base;
  char ops[8];
  int n_ops;
  struct
  {
    expressionS  exp;
    char         offset;
    char         nbits;
    char         type; /* RL78REL_*.  */
    int          reloc;
    fixS *       fixP;
  } fixups[2];
  int n_fixups;
  struct
  {
    char type;
    char field_pos;
    char val_ofs;
  } relax[2];
  int n_relax;
  int link_relax;
  fixS *link_relax_fixP;
  char times_grown;
  char times_shrank;
} rl78_bytesT;
 
static rl78_bytesT rl78_bytes;
 
static void
rl78_fixup (expressionS exp, int offsetbits, int nbits, int type)
{
  rl78_bytes.fixups[rl78_bytes.n_fixups].exp = exp;
  rl78_bytes.fixups[rl78_bytes.n_fixups].offset = offsetbits;
  rl78_bytes.fixups[rl78_bytes.n_fixups].nbits = nbits;
  rl78_bytes.fixups[rl78_bytes.n_fixups].type = type;
  rl78_bytes.fixups[rl78_bytes.n_fixups].reloc = exp.X_md;
  rl78_bytes.n_fixups ++;
}
 
#define rl78_field_fixup(exp, offset, nbits, type)      \
  rl78_fixup (exp, offset + 8 * rl78_bytes.n_prefix), nbits, type)
 
#define rl78_op_fixup(exp, offset, nbits, type)         \
  rl78_fixup (exp, offset + 8 * (rl78_bytes.n_prefix + rl78_bytes.n_base), nbits, type)
 
void
rl78_prefix (int p)
{
  rl78_bytes.prefix[0] = p;
  rl78_bytes.n_prefix = 1;
}
 
int
rl78_has_prefix ()
{
  return rl78_bytes.n_prefix;
}
 
void
rl78_base1 (int b1)
{
  rl78_bytes.base[0] = b1;
  rl78_bytes.n_base = 1;
}
 
void
rl78_base2 (int b1, int b2)
{
  rl78_bytes.base[0] = b1;
  rl78_bytes.base[1] = b2;
  rl78_bytes.n_base = 2;
}
 
void
rl78_base3 (int b1, int b2, int b3)
{
  rl78_bytes.base[0] = b1;
  rl78_bytes.base[1] = b2;
  rl78_bytes.base[2] = b3;
  rl78_bytes.n_base = 3;
}
 
void
rl78_base4 (int b1, int b2, int b3, int b4)
{
  rl78_bytes.base[0] = b1;
  rl78_bytes.base[1] = b2;
  rl78_bytes.base[2] = b3;
  rl78_bytes.base[3] = b4;
  rl78_bytes.n_base = 4;
}
 
#define F_PRECISION 2
 
void
rl78_op (expressionS exp, int nbytes, int type)
{
  int v = 0;
 
  if ((exp.X_op == O_constant || exp.X_op == O_big)
      && type != RL78REL_PCREL)
    {
      if (exp.X_op == O_big && exp.X_add_number <= 0)
        {
          LITTLENUM_TYPE w[2];
          char * ip = rl78_bytes.ops + rl78_bytes.n_ops;
 
          gen_to_words (w, F_PRECISION, 8);
          ip[3] = w[0] >> 8;
          ip[2] = w[0];
          ip[1] = w[1] >> 8;
          ip[0] = w[1];
          rl78_bytes.n_ops += 4;
        }
      else
        {
          v = exp.X_add_number;
          while (nbytes)
            {
              rl78_bytes.ops[rl78_bytes.n_ops++] =v & 0xff;
              v >>= 8;
              nbytes --;
            }
        }
    }
  else
    {
      rl78_op_fixup (exp, rl78_bytes.n_ops * 8, nbytes * 8, type);
      memset (rl78_bytes.ops + rl78_bytes.n_ops, 0, nbytes);
      rl78_bytes.n_ops += nbytes;
    }
}
 
/* This gets complicated when the field spans bytes, because fields
   are numbered from the MSB of the first byte as zero, and bits are
   stored LSB towards the LSB of the byte.  Thus, a simple four-bit
   insertion of 12 at position 4 of 0x00 yields: 0x0b.  A three-bit
   insertion of b'MXL at position 7 is like this:
 
     - - - -  - - - -   - - - -  - - - -
                    M   X L               */
 
void
rl78_field (int val, int pos, int sz)
{
  int valm;
  int bytep, bitp;
 
  if (sz > 0)
    {
      if (val < 0 || val >= (1 << sz))
        as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz);
    }
  else
    {
      sz = - sz;
      if (val < -(1 << (sz - 1)) || val >= (1 << (sz - 1)))
        as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz);
    }
 
  /* This code points at 'M' in the above example.  */
  bytep = pos / 8;
  bitp = pos % 8;
 
  while (bitp + sz > 8)
    {
      int ssz = 8 - bitp;
      int svalm;
 
      svalm = val >> (sz - ssz);
      svalm = svalm & ((1 << ssz) - 1);
      svalm = svalm << (8 - bitp - ssz);
      gas_assert (bytep < rl78_bytes.n_base);
      rl78_bytes.base[bytep] |= svalm;
 
      bitp = 0;
      sz -= ssz;
      bytep ++;
    }
  valm = val & ((1 << sz) - 1);
  valm = valm << (8 - bitp - sz);
  gas_assert (bytep < rl78_bytes.n_base);
  rl78_bytes.base[bytep] |= valm;
}
 
/*------------------------------------------------------------------*/
 
#define RL78_SHORTOPTS ""
const char * md_shortopts = RL78_SHORTOPTS;
 
/* Assembler options.  */
struct option md_longopts[] =
{
  {NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);
 
int
md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED)
{
  return 0;
}
 
void
md_show_usage (FILE * stream ATTRIBUTE_UNUSED)
{
}
 
 
static void
s_bss (int ignore ATTRIBUTE_UNUSED)
{
  int temp;
 
  temp = get_absolute_expression ();
  subseg_set (bss_section, (subsegT) temp);
  demand_empty_rest_of_line ();
}
 
/* The target specific pseudo-ops which we support.  */
const pseudo_typeS md_pseudo_table[] =
{
  /* Our "standard" pseudos. */
  { "double",   float_cons,    'd' },
  { "bss",      s_bss,          0 },
  { "3byte",    cons,           3 },
  { "int",      cons,           4 },
  { "word",     cons,           4 },
 
  /* End of list marker.  */
  { NULL,       NULL,           0 }
};
 
void
md_begin (void)
{
}
 
void
rl78_md_end (void)
{
}
 
/* Write a value out to the object file, using the appropriate endianness.  */
void
md_number_to_chars (char * buf, valueT val, int n)
{
  number_to_chars_littleendian (buf, val, n);
}
 
static struct
{
  char * fname;
  int    reloc;
}
reloc_functions[] =
{
  { "lo16", BFD_RELOC_RL78_LO16 },
  { "hi16", BFD_RELOC_RL78_HI16 },
  { "hi8",  BFD_RELOC_RL78_HI8 },
  { 0, 0 }
};
 
void
md_operand (expressionS * exp ATTRIBUTE_UNUSED)
{
  int reloc = 0;
  int i;
 
  for (i = 0; reloc_functions[i].fname; i++)
    {
      int flen = strlen (reloc_functions[i].fname);
 
      if (input_line_pointer[0] == '%'
          && strncasecmp (input_line_pointer + 1, reloc_functions[i].fname, flen) == 0
          && input_line_pointer[flen + 1] == '(')
        {
          reloc = reloc_functions[i].reloc;
          input_line_pointer += flen + 2;
          break;
        }
    }
  if (reloc == 0)
    return;
 
  expression (exp);
  if (* input_line_pointer == ')')
    input_line_pointer ++;
 
  exp->X_md = reloc;
}
 
void
rl78_frag_init (fragS * fragP)
{
  fragP->tc_frag_data = 0;
}
 
char *
md_atof (int type, char * litP, int * sizeP)
{
  return ieee_md_atof (type, litP, sizeP, target_big_endian);
}
 
symbolS *
md_undefined_symbol (char * name ATTRIBUTE_UNUSED)
{
  return NULL;
}
 
#define APPEND(B, N_B)                                 \
  if (rl78_bytes.N_B)                                  \
    {                                                  \
      memcpy (bytes + idx, rl78_bytes.B, rl78_bytes.N_B);  \
      idx += rl78_bytes.N_B;                           \
    }
 
 
void
md_assemble (char * str)
{
  char * bytes;
  fragS * frag_then = frag_now;
  int idx = 0;
  int i;
  int rel;
  expressionS  *exp;
 
  /*printf("\033[32mASM: %s\033[0m\n", str);*/
 
  dwarf2_emit_insn (0);
 
  memset (& rl78_bytes, 0, sizeof (rl78_bytes));
 
  rl78_lex_init (str, str + strlen (str));
 
  rl78_parse ();
 
  bytes = frag_more (rl78_bytes.n_prefix + rl78_bytes.n_base + rl78_bytes.n_ops);
  frag_then = frag_now;
 
  APPEND (prefix, n_prefix);
  APPEND (base, n_base);
  APPEND (ops, n_ops);
 
  for (i = 0; i < rl78_bytes.n_fixups; i ++)
    {
      /* index: [nbytes][type] */
      static int reloc_map[5][4] =
        {
          { 0,            0 },
          { BFD_RELOC_8,  BFD_RELOC_8_PCREL },
          { BFD_RELOC_16, BFD_RELOC_16_PCREL },
          { BFD_RELOC_24, BFD_RELOC_24_PCREL },
          { BFD_RELOC_32, BFD_RELOC_32_PCREL },
        };
      fixS * f;
 
      idx = rl78_bytes.fixups[i].offset / 8;
      rel = reloc_map [rl78_bytes.fixups[i].nbits / 8][(int) rl78_bytes.fixups[i].type];
 
      if (rl78_bytes.fixups[i].reloc)
        rel = rl78_bytes.fixups[i].reloc;
 
      if (frag_then->tc_frag_data)
        exp = & frag_then->tc_frag_data->fixups[i].exp;
      else
        exp = & rl78_bytes.fixups[i].exp;
 
      f = fix_new_exp (frag_then,
                       (char *) bytes + idx - frag_then->fr_literal,
                       rl78_bytes.fixups[i].nbits / 8,
                       exp,
                       rl78_bytes.fixups[i].type == RL78REL_PCREL ? 1 : 0,
                       rel);
      if (frag_then->tc_frag_data)
        frag_then->tc_frag_data->fixups[i].fixP = f;
    }
}
 
void
rl78_cons_fix_new (fragS *      frag,
                 int            where,
                 int            size,
                 expressionS *  exp)
{
  bfd_reloc_code_real_type type;
 
  switch (size)
    {
    case 1:
      type = BFD_RELOC_8;
      break;
    case 2:
      type = BFD_RELOC_16;
      break;
    case 3:
      type = BFD_RELOC_24;
      break;
    case 4:
      type = BFD_RELOC_32;
      break;
    default:
      as_bad (_("unsupported constant size %d\n"), size);
      return;
    }
 
  if (exp->X_op == O_subtract && exp->X_op_symbol)
    {
      if (size != 4 && size != 2 && size != 1)
        as_bad (_("difference of two symbols only supported with .long, .short, or .byte"));
      else
        type = BFD_RELOC_RL78_DIFF;
    }
 
  fix_new_exp (frag, where, (int) size, exp, 0, type);
}
 
/* No relaxation just yet */
int
md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED)
{
  return 0;
}
arelent **
tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
{
  static arelent * reloc[8];
  int rp;
 
  if (fixp->fx_r_type == BFD_RELOC_NONE)
    {
      reloc[0] = NULL;
      return reloc;
    }
 
  if (fixp->fx_subsy
      && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
    {
      fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy);
      fixp->fx_subsy = NULL;
    }
 
  reloc[0]                 = (arelent *) xmalloc (sizeof (arelent));
  reloc[0]->sym_ptr_ptr   = (asymbol **) xmalloc (sizeof (asymbol *));
  * reloc[0]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
  reloc[0]->address       = fixp->fx_frag->fr_address + fixp->fx_where;
  reloc[0]->addend        = fixp->fx_offset;
 
  if (fixp->fx_r_type == BFD_RELOC_RL78_32_OP
      && fixp->fx_subsy)
    {
      fixp->fx_r_type = BFD_RELOC_RL78_DIFF;
    }
 
#define OPX(REL,SYM,ADD)                                                        \
  reloc[rp]                = (arelent *) xmalloc (sizeof (arelent));            \
  reloc[rp]->sym_ptr_ptr   = (asymbol **) xmalloc (sizeof (asymbol *));         \
  reloc[rp]->howto         = bfd_reloc_type_lookup (stdoutput, REL);            \
  reloc[rp]->addend        = ADD;                                               \
  * reloc[rp]->sym_ptr_ptr = SYM;                                               \
  reloc[rp]->address       = fixp->fx_frag->fr_address + fixp->fx_where;        \
  reloc[++rp] = NULL
#define OPSYM(SYM) OPX(BFD_RELOC_RL78_SYM, SYM, 0)
#define OPIMM(IMM) OPX(BFD_RELOC_RL78_SYM, abs_symbol.bsym, IMM)
#define OP(OP) OPX(BFD_RELOC_RL78_##OP, *reloc[0]->sym_ptr_ptr, 0)
#define SYM0() reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RL78_SYM)
 
  rp = 1;
 
  /* Certain BFD relocations cannot be translated directly into
     a single (non-Red Hat) RL78 relocation, but instead need
     multiple RL78 relocations - handle them here.  */
  switch (fixp->fx_r_type)
    {
    case BFD_RELOC_RL78_DIFF:
      SYM0 ();
      OPSYM (symbol_get_bfdsym (fixp->fx_subsy));
      OP(OP_SUBTRACT);
 
      switch (fixp->fx_size)
        {
        case 1:
          OP(ABS8);
          break;
        case 2:
          OP (ABS16);
          break;
        case 4:
          OP (ABS32);
          break;
        }
      break;
 
    case BFD_RELOC_RL78_NEG32:
      SYM0 ();
      OP (OP_NEG);
      OP (ABS32);
      break;
 
    case BFD_RELOC_RL78_LO16:
      SYM0 ();
      OPIMM (0xffff);
      OP (OP_AND);
      OP (ABS16);
      break;
 
    case BFD_RELOC_RL78_HI16:
      SYM0 ();
      OPIMM (16);
      OP (OP_SHRA);
      OP (ABS16);
      break;
 
    case BFD_RELOC_RL78_HI8:
      SYM0 ();
      OPIMM (16);
      OP (OP_SHRA);
      OPIMM (0xff);
      OP (OP_AND);
      OP (ABS8);
      break;
 
    default:
      reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
      reloc[1] = NULL;
      break;
    }
 
  return reloc;
}
 
int
rl78_validate_fix_sub (struct fix * f)
{
  /* We permit the subtraction of two symbols in a few cases.  */
  /* mov #sym1-sym2, R3 */
  if (f->fx_r_type == BFD_RELOC_RL78_32_OP)
    return 1;
  /* .long sym1-sym2 */
  if (f->fx_r_type == BFD_RELOC_RL78_DIFF
      && ! f->fx_pcrel
      && (f->fx_size == 4 || f->fx_size == 2 || f->fx_size == 1))
    return 1;
  return 0;
}
 
long
md_pcrel_from_section (fixS * fixP, segT sec)
{
  long rv;
 
  if (fixP->fx_addsy != NULL
      && (! S_IS_DEFINED (fixP->fx_addsy)
          || S_GET_SEGMENT (fixP->fx_addsy) != sec))
    /* The symbol is undefined (or is defined but not in this section).
       Let the linker figure it out.  */
    return 0;
 
  rv = fixP->fx_frag->fr_address + fixP->fx_where;
  switch (fixP->fx_r_type)
    {
    case BFD_RELOC_8_PCREL:
      rv += 1;
      break;
    case BFD_RELOC_16_PCREL:
      rv += 2;
      break;
    default:
      break;
    }
  return rv;
}
 
void
md_apply_fix (struct fix * f ATTRIBUTE_UNUSED,
              valueT *     t ATTRIBUTE_UNUSED,
              segT         s ATTRIBUTE_UNUSED)
{
  char * op;
  unsigned long val;
 
  if (f->fx_addsy && S_FORCE_RELOC (f->fx_addsy, 1))
    return;
  if (f->fx_subsy && S_FORCE_RELOC (f->fx_subsy, 1))
    return;
 
  op = f->fx_frag->fr_literal + f->fx_where;
  val = (unsigned long) * t;
 
  switch (f->fx_r_type)
    {
    case BFD_RELOC_NONE:
      break;
 
    case BFD_RELOC_8:
    case BFD_RELOC_8_PCREL:
      op[0] = val;
      break;
 
    case BFD_RELOC_16:
    case BFD_RELOC_16_PCREL:
      op[0] = val;
      op[1] = val >> 8;
      break;
 
    case BFD_RELOC_24:
      op[0] = val;
      op[1] = val >> 8;
      op[2] = val >> 16;
      break;
 
    case BFD_RELOC_32:
    case BFD_RELOC_RL78_DIFF:
      op[0] = val;
      op[1] = val >> 8;
      op[2] = val >> 16;
      op[3] = val >> 24;
      break;
 
    default:
      as_bad (_("Unknown reloc in md_apply_fix: %s"),
              bfd_get_reloc_code_name (f->fx_r_type));
      break;
    }
 
  if (f->fx_addsy == NULL)
    f->fx_done = 1;
}
 
valueT
md_section_align (segT segment, valueT size)
{
  int align = bfd_get_section_alignment (stdoutput, segment);
  return ((size + (1 << align) - 1) & (-1 << align));
}
 
void
md_convert_frag (bfd *   abfd ATTRIBUTE_UNUSED,
                 segT    segment ATTRIBUTE_UNUSED,
                 fragS * fragP ATTRIBUTE_UNUSED)
{
  /* No relaxation yet */
}

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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gas/] [config/] [tc-rl78.c] - Blame information for rev 163

Line No.	Rev	Author	Line
1	163	khays	`/* tc-rl78.c -- Assembler for the Renesas RL78`
2			`Copyright 2011`
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 the Free`
19			`Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA`
20			`02110-1301, USA. */`
21
22			`#include "as.h"`
23			`#include "struc-symbol.h"`
24			`#include "obstack.h"`
25			`#include "safe-ctype.h"`
26			`#include "dwarf2dbg.h"`
27			`#include "libbfd.h"`
28			`#include "elf/common.h"`
29			`#include "elf/rl78.h"`
30			`#include "rl78-defs.h"`
31			`#include "filenames.h"`
32			`#include "listing.h"`
33			`#include "sb.h"`
34			`#include "macro.h"`
35
36			`const char comment_chars[] = ";";`
37			`/* Note that input_file.c hand checks for '#' at the beginning of the`
38			`first line of the input file. This is because the compiler outputs`
39			`#NO_APP at the beginning of its output. */`
40			`const char line_comment_chars[] = "#";`
41			`const char line_separator_chars[] = "\|";`
42
43			`const char EXP_CHARS[] = "eE";`
44			`const char FLT_CHARS[] = "dD";`
45
46			`/------------------------------------------------------------------/`
47
48			`char * rl78_lex_start;`
49			`char * rl78_lex_end;`
50
51			`typedef struct rl78_bytesT`
52			`{`
53			`char prefix[1];`
54			`int n_prefix;`
55			`char base[4];`
56			`int n_base;`
57			`char ops[8];`
58			`int n_ops;`
59			`struct`
60			`{`
61			`expressionS exp;`
62			`char offset;`
63			`char nbits;`
64			`char type; /* RL78REL_. /`
65			`int reloc;`
66			`fixS * fixP;`
67			`} fixups[2];`
68			`int n_fixups;`
69			`struct`
70			`{`
71			`char type;`
72			`char field_pos;`
73			`char val_ofs;`
74			`} relax[2];`
75			`int n_relax;`
76			`int link_relax;`
77			`fixS *link_relax_fixP;`
78			`char times_grown;`
79			`char times_shrank;`
80			`} rl78_bytesT;`
81
82			`static rl78_bytesT rl78_bytes;`
83
84			`static void`
85			`rl78_fixup (expressionS exp, int offsetbits, int nbits, int type)`
86			`{`
87			`rl78_bytes.fixups[rl78_bytes.n_fixups].exp = exp;`
88			`rl78_bytes.fixups[rl78_bytes.n_fixups].offset = offsetbits;`
89			`rl78_bytes.fixups[rl78_bytes.n_fixups].nbits = nbits;`
90			`rl78_bytes.fixups[rl78_bytes.n_fixups].type = type;`
91			`rl78_bytes.fixups[rl78_bytes.n_fixups].reloc = exp.X_md;`
92			`rl78_bytes.n_fixups ++;`
93			`}`
94
95			`#define rl78_field_fixup(exp, offset, nbits, type) \`
96			`rl78_fixup (exp, offset + 8 * rl78_bytes.n_prefix), nbits, type)`
97
98			`#define rl78_op_fixup(exp, offset, nbits, type) \`
99			`rl78_fixup (exp, offset + 8 * (rl78_bytes.n_prefix + rl78_bytes.n_base), nbits, type)`
100
101			`void`
102			`rl78_prefix (int p)`
103			`{`
104			`rl78_bytes.prefix[0] = p;`
105			`rl78_bytes.n_prefix = 1;`
106			`}`
107
108			`int`
109			`rl78_has_prefix ()`
110			`{`
111			`return rl78_bytes.n_prefix;`
112			`}`
113
114			`void`
115			`rl78_base1 (int b1)`
116			`{`
117			`rl78_bytes.base[0] = b1;`
118			`rl78_bytes.n_base = 1;`
119			`}`
120
121			`void`
122			`rl78_base2 (int b1, int b2)`
123			`{`
124			`rl78_bytes.base[0] = b1;`
125			`rl78_bytes.base[1] = b2;`
126			`rl78_bytes.n_base = 2;`
127			`}`
128
129			`void`
130			`rl78_base3 (int b1, int b2, int b3)`
131			`{`
132			`rl78_bytes.base[0] = b1;`
133			`rl78_bytes.base[1] = b2;`
134			`rl78_bytes.base[2] = b3;`
135			`rl78_bytes.n_base = 3;`
136			`}`
137
138			`void`
139			`rl78_base4 (int b1, int b2, int b3, int b4)`
140			`{`
141			`rl78_bytes.base[0] = b1;`
142			`rl78_bytes.base[1] = b2;`
143			`rl78_bytes.base[2] = b3;`
144			`rl78_bytes.base[3] = b4;`
145			`rl78_bytes.n_base = 4;`
146			`}`
147
148			`#define F_PRECISION 2`
149
150			`void`
151			`rl78_op (expressionS exp, int nbytes, int type)`
152			`{`
153			`int v = 0;`
154
155			`if ((exp.X_op == O_constant \|\| exp.X_op == O_big)`
156			`&& type != RL78REL_PCREL)`
157			`{`
158			`if (exp.X_op == O_big && exp.X_add_number <= 0)`
159			`{`
160			`LITTLENUM_TYPE w[2];`
161			`char * ip = rl78_bytes.ops + rl78_bytes.n_ops;`
162
163			`gen_to_words (w, F_PRECISION, 8);`
164			`ip[3] = w[0] >> 8;`
165			`ip[2] = w[0];`
166			`ip[1] = w[1] >> 8;`
167			`ip[0] = w[1];`
168			`rl78_bytes.n_ops += 4;`
169			`}`
170			`else`
171			`{`
172			`v = exp.X_add_number;`
173			`while (nbytes)`
174			`{`
175			`rl78_bytes.ops[rl78_bytes.n_ops++] =v & 0xff;`
176			`v >>= 8;`
177			`nbytes --;`
178			`}`
179			`}`
180			`}`
181			`else`
182			`{`
183			`rl78_op_fixup (exp, rl78_bytes.n_ops * 8, nbytes * 8, type);`
184			`memset (rl78_bytes.ops + rl78_bytes.n_ops, 0, nbytes);`
185			`rl78_bytes.n_ops += nbytes;`
186			`}`
187			`}`
188
189			`/* This gets complicated when the field spans bytes, because fields`
190			`are numbered from the MSB of the first byte as zero, and bits are`
191			`stored LSB towards the LSB of the byte. Thus, a simple four-bit`
192			`insertion of 12 at position 4 of 0x00 yields: 0x0b. A three-bit`
193			`insertion of b'MXL at position 7 is like this:`
194
195			`- - - - - - - - - - - - - - - -`
196			`M X L */`
197
198			`void`
199			`rl78_field (int val, int pos, int sz)`
200			`{`
201			`int valm;`
202			`int bytep, bitp;`
203
204			`if (sz > 0)`
205			`{`
206			`if (val < 0 \|\| val >= (1 << sz))`
207			`as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz);`
208			`}`
209			`else`
210			`{`
211			`sz = - sz;`
212			`if (val < -(1 << (sz - 1)) \|\| val >= (1 << (sz - 1)))`
213			`as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz);`
214			`}`
215
216			`/* This code points at 'M' in the above example. */`
217			`bytep = pos / 8;`
218			`bitp = pos % 8;`
219
220			`while (bitp + sz > 8)`
221			`{`
222			`int ssz = 8 - bitp;`
223			`int svalm;`
224
225			`svalm = val >> (sz - ssz);`
226			`svalm = svalm & ((1 << ssz) - 1);`
227			`svalm = svalm << (8 - bitp - ssz);`
228			`gas_assert (bytep < rl78_bytes.n_base);`
229			`rl78_bytes.base[bytep] \|= svalm;`
230
231			`bitp = 0;`
232			`sz -= ssz;`
233			`bytep ++;`
234			`}`
235			`valm = val & ((1 << sz) - 1);`
236			`valm = valm << (8 - bitp - sz);`
237			`gas_assert (bytep < rl78_bytes.n_base);`
238			`rl78_bytes.base[bytep] \|= valm;`
239			`}`
240
241			`/------------------------------------------------------------------/`
242
243			`#define RL78_SHORTOPTS ""`
244			`const char * md_shortopts = RL78_SHORTOPTS;`
245
246			`/* Assembler options. */`
247			`struct option md_longopts[] =`
248			`{`
249			`{NULL, no_argument, NULL, 0}`
250			`};`
251			`size_t md_longopts_size = sizeof (md_longopts);`
252
253			`int`
254			`md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED)`
255			`{`
256			`return 0;`
257			`}`
258
259			`void`
260			`md_show_usage (FILE * stream ATTRIBUTE_UNUSED)`
261			`{`
262			`}`
263
264
265			`static void`
266			`s_bss (int ignore ATTRIBUTE_UNUSED)`
267			`{`
268			`int temp;`
269
270			`temp = get_absolute_expression ();`
271			`subseg_set (bss_section, (subsegT) temp);`
272			`demand_empty_rest_of_line ();`
273			`}`
274
275			`/* The target specific pseudo-ops which we support. */`
276			`const pseudo_typeS md_pseudo_table[] =`
277			`{`
278			`/* Our "standard" pseudos. */`
279			`{ "double", float_cons, 'd' },`
280			`{ "bss", s_bss, 0 },`
281			`{ "3byte", cons, 3 },`
282			`{ "int", cons, 4 },`
283			`{ "word", cons, 4 },`
284
285			`/* End of list marker. */`
286			`{ NULL, NULL, 0 }`
287			`};`
288
289			`void`
290			`md_begin (void)`
291			`{`
292			`}`
293
294			`void`
295			`rl78_md_end (void)`
296			`{`
297			`}`
298
299			`/* Write a value out to the object file, using the appropriate endianness. */`
300			`void`
301			`md_number_to_chars (char * buf, valueT val, int n)`
302			`{`
303			`number_to_chars_littleendian (buf, val, n);`
304			`}`
305
306			`static struct`
307			`{`
308			`char * fname;`
309			`int reloc;`
310			`}`
311			`reloc_functions[] =`
312			`{`
313			`{ "lo16", BFD_RELOC_RL78_LO16 },`
314			`{ "hi16", BFD_RELOC_RL78_HI16 },`
315			`{ "hi8", BFD_RELOC_RL78_HI8 },`
316			`{ 0, 0 }`
317			`};`
318
319			`void`
320			`md_operand (expressionS * exp ATTRIBUTE_UNUSED)`
321			`{`
322			`int reloc = 0;`
323			`int i;`
324
325			`for (i = 0; reloc_functions[i].fname; i++)`
326			`{`
327			`int flen = strlen (reloc_functions[i].fname);`
328
329			`if (input_line_pointer[0] == '%'`
330			`&& strncasecmp (input_line_pointer + 1, reloc_functions[i].fname, flen) == 0`
331			`&& input_line_pointer[flen + 1] == '(')`
332			`{`
333			`reloc = reloc_functions[i].reloc;`
334			`input_line_pointer += flen + 2;`
335			`break;`
336			`}`
337			`}`
338			`if (reloc == 0)`
339			`return;`
340
341			`expression (exp);`
342			`if (* input_line_pointer == ')')`
343			`input_line_pointer ++;`
344
345			`exp->X_md = reloc;`
346			`}`
347
348			`void`
349			`rl78_frag_init (fragS * fragP)`
350			`{`
351			`fragP->tc_frag_data = 0;`
352			`}`
353
354			`char *`
355			`md_atof (int type, char * litP, int * sizeP)`
356			`{`
357			`return ieee_md_atof (type, litP, sizeP, target_big_endian);`
358			`}`
359
360			`symbolS *`
361			`md_undefined_symbol (char * name ATTRIBUTE_UNUSED)`
362			`{`
363			`return NULL;`
364			`}`
365
366			`#define APPEND(B, N_B) \`
367			`if (rl78_bytes.N_B) \`
368			`{ \`
369			`memcpy (bytes + idx, rl78_bytes.B, rl78_bytes.N_B); \`
370			`idx += rl78_bytes.N_B; \`
371			`}`
372
373
374			`void`
375			`md_assemble (char * str)`
376			`{`
377			`char * bytes;`
378			`fragS * frag_then = frag_now;`
379			`int idx = 0;`
380			`int i;`
381			`int rel;`
382			`expressionS *exp;`
383
384			`/printf("\033[32mASM: %s\033[0m\n", str);/`
385
386			`dwarf2_emit_insn (0);`
387
388			`memset (& rl78_bytes, 0, sizeof (rl78_bytes));`
389
390			`rl78_lex_init (str, str + strlen (str));`
391
392			`rl78_parse ();`
393
394			`bytes = frag_more (rl78_bytes.n_prefix + rl78_bytes.n_base + rl78_bytes.n_ops);`
395			`frag_then = frag_now;`
396
397			`APPEND (prefix, n_prefix);`
398			`APPEND (base, n_base);`
399			`APPEND (ops, n_ops);`
400
401			`for (i = 0; i < rl78_bytes.n_fixups; i ++)`
402			`{`
403			`/* index: [nbytes][type] */`
404			`static int reloc_map[5][4] =`
405			`{`
406			`{ 0, 0 },`
407			`{ BFD_RELOC_8, BFD_RELOC_8_PCREL },`
408			`{ BFD_RELOC_16, BFD_RELOC_16_PCREL },`
409			`{ BFD_RELOC_24, BFD_RELOC_24_PCREL },`
410			`{ BFD_RELOC_32, BFD_RELOC_32_PCREL },`
411			`};`
412			`fixS * f;`
413
414			`idx = rl78_bytes.fixups[i].offset / 8;`
415			`rel = reloc_map [rl78_bytes.fixups[i].nbits / 8][(int) rl78_bytes.fixups[i].type];`
416
417			`if (rl78_bytes.fixups[i].reloc)`
418			`rel = rl78_bytes.fixups[i].reloc;`
419
420			`if (frag_then->tc_frag_data)`
421			`exp = & frag_then->tc_frag_data->fixups[i].exp;`
422			`else`
423			`exp = & rl78_bytes.fixups[i].exp;`
424
425			`f = fix_new_exp (frag_then,`
426			`(char *) bytes + idx - frag_then->fr_literal,`
427			`rl78_bytes.fixups[i].nbits / 8,`
428			`exp,`
429			`rl78_bytes.fixups[i].type == RL78REL_PCREL ? 1 : 0,`
430			`rel);`
431			`if (frag_then->tc_frag_data)`
432			`frag_then->tc_frag_data->fixups[i].fixP = f;`
433			`}`
434			`}`
435
436			`void`
437			`rl78_cons_fix_new (fragS * frag,`
438			`int where,`
439			`int size,`
440			`expressionS * exp)`
441			`{`
442			`bfd_reloc_code_real_type type;`
443
444			`switch (size)`
445			`{`
446			`case 1:`
447			`type = BFD_RELOC_8;`
448			`break;`
449			`case 2:`
450			`type = BFD_RELOC_16;`
451			`break;`
452			`case 3:`
453			`type = BFD_RELOC_24;`
454			`break;`
455			`case 4:`
456			`type = BFD_RELOC_32;`
457			`break;`
458			`default:`
459			`as_bad (_("unsupported constant size %d\n"), size);`
460			`return;`
461			`}`
462
463			`if (exp->X_op == O_subtract && exp->X_op_symbol)`
464			`{`
465			`if (size != 4 && size != 2 && size != 1)`
466			`as_bad (_("difference of two symbols only supported with .long, .short, or .byte"));`
467			`else`
468			`type = BFD_RELOC_RL78_DIFF;`
469			`}`
470
471			`fix_new_exp (frag, where, (int) size, exp, 0, type);`
472			`}`
473
474			`/* No relaxation just yet */`
475			`int`
476			`md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED)`
477			`{`
478			`return 0;`
479			`}`
480			`arelent **`
481			`tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)`
482			`{`
483			`static arelent * reloc[8];`
484			`int rp;`
485
486			`if (fixp->fx_r_type == BFD_RELOC_NONE)`
487			`{`
488			`reloc[0] = NULL;`
489			`return reloc;`
490			`}`
491
492			`if (fixp->fx_subsy`
493			`&& S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)`
494			`{`
495			`fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy);`
496			`fixp->fx_subsy = NULL;`
497			`}`
498
499			`reloc[0] = (arelent *) xmalloc (sizeof (arelent));`
500			`reloc[0]->sym_ptr_ptr = (asymbol *) xmalloc (sizeof (asymbol ));`
501			`* reloc[0]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);`
502			`reloc[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;`
503			`reloc[0]->addend = fixp->fx_offset;`
504
505			`if (fixp->fx_r_type == BFD_RELOC_RL78_32_OP`
506			`&& fixp->fx_subsy)`
507			`{`
508			`fixp->fx_r_type = BFD_RELOC_RL78_DIFF;`
509			`}`
510
511			`#define OPX(REL,SYM,ADD) \`
512			`reloc[rp] = (arelent *) xmalloc (sizeof (arelent)); \`
513			`reloc[rp]->sym_ptr_ptr = (asymbol *) xmalloc (sizeof (asymbol )); \`
514			`reloc[rp]->howto = bfd_reloc_type_lookup (stdoutput, REL); \`
515			`reloc[rp]->addend = ADD; \`
516			`* reloc[rp]->sym_ptr_ptr = SYM; \`
517			`reloc[rp]->address = fixp->fx_frag->fr_address + fixp->fx_where; \`
518			`reloc[++rp] = NULL`
519			`#define OPSYM(SYM) OPX(BFD_RELOC_RL78_SYM, SYM, 0)`
520			`#define OPIMM(IMM) OPX(BFD_RELOC_RL78_SYM, abs_symbol.bsym, IMM)`
521			`#define OP(OP) OPX(BFD_RELOC_RL78_##OP, *reloc[0]->sym_ptr_ptr, 0)`
522			`#define SYM0() reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RL78_SYM)`
523
524			`rp = 1;`
525
526			`/* Certain BFD relocations cannot be translated directly into`
527			`a single (non-Red Hat) RL78 relocation, but instead need`
528			`multiple RL78 relocations - handle them here. */`
529			`switch (fixp->fx_r_type)`
530			`{`
531			`case BFD_RELOC_RL78_DIFF:`
532			`SYM0 ();`
533			`OPSYM (symbol_get_bfdsym (fixp->fx_subsy));`
534			`OP(OP_SUBTRACT);`
535
536			`switch (fixp->fx_size)`
537			`{`
538			`case 1:`
539			`OP(ABS8);`
540			`break;`
541			`case 2:`
542			`OP (ABS16);`
543			`break;`
544			`case 4:`
545			`OP (ABS32);`
546			`break;`
547			`}`
548			`break;`
549
550			`case BFD_RELOC_RL78_NEG32:`
551			`SYM0 ();`
552			`OP (OP_NEG);`
553			`OP (ABS32);`
554			`break;`
555
556			`case BFD_RELOC_RL78_LO16:`
557			`SYM0 ();`
558			`OPIMM (0xffff);`
559			`OP (OP_AND);`
560			`OP (ABS16);`
561			`break;`
562
563			`case BFD_RELOC_RL78_HI16:`
564			`SYM0 ();`
565			`OPIMM (16);`
566			`OP (OP_SHRA);`
567			`OP (ABS16);`
568			`break;`
569
570			`case BFD_RELOC_RL78_HI8:`
571			`SYM0 ();`
572			`OPIMM (16);`
573			`OP (OP_SHRA);`
574			`OPIMM (0xff);`
575			`OP (OP_AND);`
576			`OP (ABS8);`
577			`break;`
578
579			`default:`
580			`reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);`
581			`reloc[1] = NULL;`
582			`break;`
583			`}`
584
585			`return reloc;`
586			`}`
587
588			`int`
589			`rl78_validate_fix_sub (struct fix * f)`
590			`{`
591			`/* We permit the subtraction of two symbols in a few cases. */`
592			`/* mov #sym1-sym2, R3 */`
593			`if (f->fx_r_type == BFD_RELOC_RL78_32_OP)`
594			`return 1;`
595			`/* .long sym1-sym2 */`
596			`if (f->fx_r_type == BFD_RELOC_RL78_DIFF`
597			`&& ! f->fx_pcrel`
598			`&& (f->fx_size == 4 \|\| f->fx_size == 2 \|\| f->fx_size == 1))`
599			`return 1;`
600			`return 0;`
601			`}`
602
603			`long`
604			`md_pcrel_from_section (fixS * fixP, segT sec)`
605			`{`
606			`long rv;`
607
608			`if (fixP->fx_addsy != NULL`
609			`&& (! S_IS_DEFINED (fixP->fx_addsy)`
610			`\|\| S_GET_SEGMENT (fixP->fx_addsy) != sec))`
611			`/* The symbol is undefined (or is defined but not in this section).`
612			`Let the linker figure it out. */`
613			`return 0;`
614
615			`rv = fixP->fx_frag->fr_address + fixP->fx_where;`
616			`switch (fixP->fx_r_type)`
617			`{`
618			`case BFD_RELOC_8_PCREL:`
619			`rv += 1;`
620			`break;`
621			`case BFD_RELOC_16_PCREL:`
622			`rv += 2;`
623			`break;`
624			`default:`
625			`break;`
626			`}`
627			`return rv;`
628			`}`
629
630			`void`
631			`md_apply_fix (struct fix * f ATTRIBUTE_UNUSED,`
632			`valueT * t ATTRIBUTE_UNUSED,`
633			`segT s ATTRIBUTE_UNUSED)`
634			`{`
635			`char * op;`
636			`unsigned long val;`
637
638			`if (f->fx_addsy && S_FORCE_RELOC (f->fx_addsy, 1))`
639			`return;`
640			`if (f->fx_subsy && S_FORCE_RELOC (f->fx_subsy, 1))`
641			`return;`
642
643			`op = f->fx_frag->fr_literal + f->fx_where;`
644			`val = (unsigned long) * t;`
645
646			`switch (f->fx_r_type)`
647			`{`
648			`case BFD_RELOC_NONE:`
649			`break;`
650
651			`case BFD_RELOC_8:`
652			`case BFD_RELOC_8_PCREL:`
653			`op[0] = val;`
654			`break;`
655
656			`case BFD_RELOC_16:`
657			`case BFD_RELOC_16_PCREL:`
658			`op[0] = val;`
659			`op[1] = val >> 8;`
660			`break;`
661
662			`case BFD_RELOC_24:`
663			`op[0] = val;`
664			`op[1] = val >> 8;`
665			`op[2] = val >> 16;`
666			`break;`
667
668			`case BFD_RELOC_32:`
669			`case BFD_RELOC_RL78_DIFF:`
670			`op[0] = val;`
671			`op[1] = val >> 8;`
672			`op[2] = val >> 16;`
673			`op[3] = val >> 24;`
674			`break;`
675
676			`default:`
677			`as_bad (_("Unknown reloc in md_apply_fix: %s"),`
678			`bfd_get_reloc_code_name (f->fx_r_type));`
679			`break;`
680			`}`
681
682			`if (f->fx_addsy == NULL)`
683			`f->fx_done = 1;`
684			`}`
685
686			`valueT`
687			`md_section_align (segT segment, valueT size)`
688			`{`
689			`int align = bfd_get_section_alignment (stdoutput, segment);`
690			`return ((size + (1 << align) - 1) & (-1 << align));`
691			`}`
692
693			`void`
694			`md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,`
695			`segT segment ATTRIBUTE_UNUSED,`
696			`fragS * fragP ATTRIBUTE_UNUSED)`
697			`{`
698			`/* No relaxation yet */`
699			`}`