URL https://opencores.org/ocsvn/open8_urisc/open8_urisc/trunk

Subversion Repositories open8_urisc

[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gas/] [config/] [tc-rl78.c] - Blame information for rev 196

Go to most recent revision | Details | Compare with Previous | View Log


/* 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;
 
void
rl78_linkrelax_addr16 (void)
{
  rl78_bytes.link_relax |= RL78_RELAXA_ADDR16;
}
 
void
rl78_linkrelax_branch (void)
{
  rl78_bytes.link_relax |= RL78_RELAXA_BRA;
}
 
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;
}
 
/*------------------------------------------------------------------*/
 
enum options
{
  OPTION_RELAX = OPTION_MD_BASE,
};
 
#define RL78_SHORTOPTS ""
const char * md_shortopts = RL78_SHORTOPTS;
 
/* Assembler options.  */
struct option md_longopts[] =
{
  {"relax", no_argument, NULL, OPTION_RELAX},
  {NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);
 
int
md_parse_option (int c, char * arg ATTRIBUTE_UNUSED)
{
  switch (c)
    {
    case OPTION_RELAX:
      linkrelax = 1;
      return 1;
 
    }
  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)
{
  if (rl78_bytes.n_relax || rl78_bytes.link_relax)
    {
      fragP->tc_frag_data = malloc (sizeof (rl78_bytesT));
      memcpy (fragP->tc_frag_data, & rl78_bytes, sizeof (rl78_bytesT));
    }
  else
    fragP->tc_frag_data = 0;
}
 
/* When relaxing, we need to output a reloc for any .align directive
   so that we can retain this alignment as we adjust opcode sizes.  */
void
rl78_handle_align (fragS * frag)
{
  if (linkrelax
      && (frag->fr_type == rs_align
          || frag->fr_type == rs_align_code)
      && frag->fr_address + frag->fr_fix > 0
      && frag->fr_offset > 0
      && now_seg != bss_section)
    {
      fix_new (frag, frag->fr_fix, 0,
               &abs_symbol, RL78_RELAXA_ALIGN + frag->fr_offset,
               0, BFD_RELOC_RL78_RELAX);
      /* For the purposes of relaxation, this relocation is attached
         to the byte *after* the alignment - i.e. the byte that must
         remain aligned.  */
      fix_new (frag->fr_next, 0, 0,
               &abs_symbol, RL78_RELAXA_ELIGN + frag->fr_offset,
               0, BFD_RELOC_RL78_RELAX);
    }
}
 
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 ();
 
  /* This simplifies the relaxation code.  */
  if (rl78_bytes.link_relax)
    {
      int olen = rl78_bytes.n_prefix + rl78_bytes.n_base + rl78_bytes.n_ops;
      /* We do it this way because we want the frag to have the
         rl78_bytes in it, which we initialize above.  */
      bytes = frag_more (olen);
      frag_then = frag_now;
      frag_variant (rs_machine_dependent,
                    olen /* max_chars */,
 
                    olen /* subtype */,
 
 
 
      frag_then->fr_opcode = bytes;
      frag_then->fr_fix = olen + (bytes - frag_then->fr_literal);
      frag_then->fr_subtype = olen;
      frag_then->fr_var = 0;
    }
  else
    {
      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);
 
  if (rl78_bytes.link_relax)
    {
      fixS * f;
 
      f = fix_new (frag_then,
                   (char *) bytes - frag_then->fr_literal,
                   0,
                   abs_section_sym,
                   rl78_bytes.link_relax | rl78_bytes.n_fixups,
                   0,
                   BFD_RELOC_RL78_RELAX);
      frag_then->tc_frag_data->link_relax_fixP = f;
    }
 
  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_RL78_RELAX:
      f->fx_done = 1;
      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 */
  fragP->fr_var = 0;
}

Browse

Tools

Subversion Repositories open8_urisc

[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gas/] [config/] [tc-rl78.c] - Blame information for rev 196

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	166	khays	`void`
85			`rl78_linkrelax_addr16 (void)`
86			`{`
87			`rl78_bytes.link_relax \|= RL78_RELAXA_ADDR16;`
88			`}`
89
90			`void`
91			`rl78_linkrelax_branch (void)`
92			`{`
93			`rl78_bytes.link_relax \|= RL78_RELAXA_BRA;`
94			`}`
95
96	163	khays	`static void`
97			`rl78_fixup (expressionS exp, int offsetbits, int nbits, int type)`
98			`{`
99			`rl78_bytes.fixups[rl78_bytes.n_fixups].exp = exp;`
100			`rl78_bytes.fixups[rl78_bytes.n_fixups].offset = offsetbits;`
101			`rl78_bytes.fixups[rl78_bytes.n_fixups].nbits = nbits;`
102			`rl78_bytes.fixups[rl78_bytes.n_fixups].type = type;`
103			`rl78_bytes.fixups[rl78_bytes.n_fixups].reloc = exp.X_md;`
104			`rl78_bytes.n_fixups ++;`
105			`}`
106
107			`#define rl78_field_fixup(exp, offset, nbits, type) \`
108			`rl78_fixup (exp, offset + 8 * rl78_bytes.n_prefix), nbits, type)`
109
110			`#define rl78_op_fixup(exp, offset, nbits, type) \`
111			`rl78_fixup (exp, offset + 8 * (rl78_bytes.n_prefix + rl78_bytes.n_base), nbits, type)`
112
113			`void`
114			`rl78_prefix (int p)`
115			`{`
116			`rl78_bytes.prefix[0] = p;`
117			`rl78_bytes.n_prefix = 1;`
118			`}`
119
120			`int`
121			`rl78_has_prefix ()`
122			`{`
123			`return rl78_bytes.n_prefix;`
124			`}`
125
126			`void`
127			`rl78_base1 (int b1)`
128			`{`
129			`rl78_bytes.base[0] = b1;`
130			`rl78_bytes.n_base = 1;`
131			`}`
132
133			`void`
134			`rl78_base2 (int b1, int b2)`
135			`{`
136			`rl78_bytes.base[0] = b1;`
137			`rl78_bytes.base[1] = b2;`
138			`rl78_bytes.n_base = 2;`
139			`}`
140
141			`void`
142			`rl78_base3 (int b1, int b2, int b3)`
143			`{`
144			`rl78_bytes.base[0] = b1;`
145			`rl78_bytes.base[1] = b2;`
146			`rl78_bytes.base[2] = b3;`
147			`rl78_bytes.n_base = 3;`
148			`}`
149
150			`void`
151			`rl78_base4 (int b1, int b2, int b3, int b4)`
152			`{`
153			`rl78_bytes.base[0] = b1;`
154			`rl78_bytes.base[1] = b2;`
155			`rl78_bytes.base[2] = b3;`
156			`rl78_bytes.base[3] = b4;`
157			`rl78_bytes.n_base = 4;`
158			`}`
159
160			`#define F_PRECISION 2`
161
162			`void`
163			`rl78_op (expressionS exp, int nbytes, int type)`
164			`{`
165			`int v = 0;`
166
167			`if ((exp.X_op == O_constant \|\| exp.X_op == O_big)`
168			`&& type != RL78REL_PCREL)`
169			`{`
170			`if (exp.X_op == O_big && exp.X_add_number <= 0)`
171			`{`
172			`LITTLENUM_TYPE w[2];`
173			`char * ip = rl78_bytes.ops + rl78_bytes.n_ops;`
174
175			`gen_to_words (w, F_PRECISION, 8);`
176			`ip[3] = w[0] >> 8;`
177			`ip[2] = w[0];`
178			`ip[1] = w[1] >> 8;`
179			`ip[0] = w[1];`
180			`rl78_bytes.n_ops += 4;`
181			`}`
182			`else`
183			`{`
184			`v = exp.X_add_number;`
185			`while (nbytes)`
186			`{`
187			`rl78_bytes.ops[rl78_bytes.n_ops++] =v & 0xff;`
188			`v >>= 8;`
189			`nbytes --;`
190			`}`
191			`}`
192			`}`
193			`else`
194			`{`
195			`rl78_op_fixup (exp, rl78_bytes.n_ops * 8, nbytes * 8, type);`
196			`memset (rl78_bytes.ops + rl78_bytes.n_ops, 0, nbytes);`
197			`rl78_bytes.n_ops += nbytes;`
198			`}`
199			`}`
200
201			`/* This gets complicated when the field spans bytes, because fields`
202			`are numbered from the MSB of the first byte as zero, and bits are`
203			`stored LSB towards the LSB of the byte. Thus, a simple four-bit`
204			`insertion of 12 at position 4 of 0x00 yields: 0x0b. A three-bit`
205			`insertion of b'MXL at position 7 is like this:`
206
207			`- - - - - - - - - - - - - - - -`
208			`M X L */`
209
210			`void`
211			`rl78_field (int val, int pos, int sz)`
212			`{`
213			`int valm;`
214			`int bytep, bitp;`
215
216			`if (sz > 0)`
217			`{`
218			`if (val < 0 \|\| val >= (1 << sz))`
219			`as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz);`
220			`}`
221			`else`
222			`{`
223			`sz = - sz;`
224			`if (val < -(1 << (sz - 1)) \|\| val >= (1 << (sz - 1)))`
225			`as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz);`
226			`}`
227
228			`/* This code points at 'M' in the above example. */`
229			`bytep = pos / 8;`
230			`bitp = pos % 8;`
231
232			`while (bitp + sz > 8)`
233			`{`
234			`int ssz = 8 - bitp;`
235			`int svalm;`
236
237			`svalm = val >> (sz - ssz);`
238			`svalm = svalm & ((1 << ssz) - 1);`
239			`svalm = svalm << (8 - bitp - ssz);`
240			`gas_assert (bytep < rl78_bytes.n_base);`
241			`rl78_bytes.base[bytep] \|= svalm;`
242
243			`bitp = 0;`
244			`sz -= ssz;`
245			`bytep ++;`
246			`}`
247			`valm = val & ((1 << sz) - 1);`
248			`valm = valm << (8 - bitp - sz);`
249			`gas_assert (bytep < rl78_bytes.n_base);`
250			`rl78_bytes.base[bytep] \|= valm;`
251			`}`
252
253			`/------------------------------------------------------------------/`
254
255	166	khays	`enum options`
256			`{`
257			`OPTION_RELAX = OPTION_MD_BASE,`
258			`};`
259
260	163	khays	`#define RL78_SHORTOPTS ""`
261			`const char * md_shortopts = RL78_SHORTOPTS;`
262
263			`/* Assembler options. */`
264			`struct option md_longopts[] =`
265			`{`
266	166	khays	`{"relax", no_argument, NULL, OPTION_RELAX},`
267	163	khays	`{NULL, no_argument, NULL, 0}`
268			`};`
269			`size_t md_longopts_size = sizeof (md_longopts);`
270
271			`int`
272	166	khays	`md_parse_option (int c, char * arg ATTRIBUTE_UNUSED)`
273	163	khays	`{`
274	166	khays	`switch (c)`
275			`{`
276			`case OPTION_RELAX:`
277			`linkrelax = 1;`
278			`return 1;`
279
280			`}`
281	163	khays	`return 0;`
282			`}`
283
284			`void`
285			`md_show_usage (FILE * stream ATTRIBUTE_UNUSED)`
286			`{`
287			`}`
288
289
290			`static void`
291			`s_bss (int ignore ATTRIBUTE_UNUSED)`
292			`{`
293			`int temp;`
294
295			`temp = get_absolute_expression ();`
296			`subseg_set (bss_section, (subsegT) temp);`
297			`demand_empty_rest_of_line ();`
298			`}`
299
300			`/* The target specific pseudo-ops which we support. */`
301			`const pseudo_typeS md_pseudo_table[] =`
302			`{`
303			`/* Our "standard" pseudos. */`
304			`{ "double", float_cons, 'd' },`
305			`{ "bss", s_bss, 0 },`
306			`{ "3byte", cons, 3 },`
307			`{ "int", cons, 4 },`
308			`{ "word", cons, 4 },`
309
310			`/* End of list marker. */`
311			`{ NULL, NULL, 0 }`
312			`};`
313
314			`void`
315			`md_begin (void)`
316			`{`
317			`}`
318
319			`void`
320			`rl78_md_end (void)`
321			`{`
322			`}`
323
324			`/* Write a value out to the object file, using the appropriate endianness. */`
325			`void`
326			`md_number_to_chars (char * buf, valueT val, int n)`
327			`{`
328			`number_to_chars_littleendian (buf, val, n);`
329			`}`
330
331			`static struct`
332			`{`
333			`char * fname;`
334			`int reloc;`
335			`}`
336			`reloc_functions[] =`
337			`{`
338			`{ "lo16", BFD_RELOC_RL78_LO16 },`
339			`{ "hi16", BFD_RELOC_RL78_HI16 },`
340			`{ "hi8", BFD_RELOC_RL78_HI8 },`
341			`{ 0, 0 }`
342			`};`
343
344			`void`
345			`md_operand (expressionS * exp ATTRIBUTE_UNUSED)`
346			`{`
347			`int reloc = 0;`
348			`int i;`
349
350			`for (i = 0; reloc_functions[i].fname; i++)`
351			`{`
352			`int flen = strlen (reloc_functions[i].fname);`
353
354			`if (input_line_pointer[0] == '%'`
355			`&& strncasecmp (input_line_pointer + 1, reloc_functions[i].fname, flen) == 0`
356			`&& input_line_pointer[flen + 1] == '(')`
357			`{`
358			`reloc = reloc_functions[i].reloc;`
359			`input_line_pointer += flen + 2;`
360			`break;`
361			`}`
362			`}`
363			`if (reloc == 0)`
364			`return;`
365
366			`expression (exp);`
367			`if (* input_line_pointer == ')')`
368			`input_line_pointer ++;`
369
370			`exp->X_md = reloc;`
371			`}`
372
373			`void`
374			`rl78_frag_init (fragS * fragP)`
375			`{`
376	166	khays	`if (rl78_bytes.n_relax \|\| rl78_bytes.link_relax)`
377			`{`
378			`fragP->tc_frag_data = malloc (sizeof (rl78_bytesT));`
379			`memcpy (fragP->tc_frag_data, & rl78_bytes, sizeof (rl78_bytesT));`
380			`}`
381			`else`
382			`fragP->tc_frag_data = 0;`
383	163	khays	`}`
384
385	166	khays	`/* When relaxing, we need to output a reloc for any .align directive`
386			`so that we can retain this alignment as we adjust opcode sizes. */`
387			`void`
388			`rl78_handle_align (fragS * frag)`
389			`{`
390			`if (linkrelax`
391			`&& (frag->fr_type == rs_align`
392			`\|\| frag->fr_type == rs_align_code)`
393			`&& frag->fr_address + frag->fr_fix > 0`
394			`&& frag->fr_offset > 0`
395			`&& now_seg != bss_section)`
396			`{`
397			`fix_new (frag, frag->fr_fix, 0,`
398			`&abs_symbol, RL78_RELAXA_ALIGN + frag->fr_offset,`
399			`0, BFD_RELOC_RL78_RELAX);`
400			`/* For the purposes of relaxation, this relocation is attached`
401			`to the byte after the alignment - i.e. the byte that must`
402			`remain aligned. */`
403			`fix_new (frag->fr_next, 0, 0,`
404			`&abs_symbol, RL78_RELAXA_ELIGN + frag->fr_offset,`
405			`0, BFD_RELOC_RL78_RELAX);`
406			`}`
407			`}`
408
409	163	khays	`char *`
410			`md_atof (int type, char * litP, int * sizeP)`
411			`{`
412			`return ieee_md_atof (type, litP, sizeP, target_big_endian);`
413			`}`
414
415			`symbolS *`
416			`md_undefined_symbol (char * name ATTRIBUTE_UNUSED)`
417			`{`
418			`return NULL;`
419			`}`
420
421			`#define APPEND(B, N_B) \`
422			`if (rl78_bytes.N_B) \`
423			`{ \`
424			`memcpy (bytes + idx, rl78_bytes.B, rl78_bytes.N_B); \`
425			`idx += rl78_bytes.N_B; \`
426			`}`
427
428
429			`void`
430			`md_assemble (char * str)`
431			`{`
432			`char * bytes;`
433			`fragS * frag_then = frag_now;`
434			`int idx = 0;`
435			`int i;`
436			`int rel;`
437			`expressionS *exp;`
438
439			`/printf("\033[32mASM: %s\033[0m\n", str);/`
440
441			`dwarf2_emit_insn (0);`
442
443			`memset (& rl78_bytes, 0, sizeof (rl78_bytes));`
444
445			`rl78_lex_init (str, str + strlen (str));`
446
447			`rl78_parse ();`
448
449	166	khays	`/* This simplifies the relaxation code. */`
450			`if (rl78_bytes.link_relax)`
451			`{`
452			`int olen = rl78_bytes.n_prefix + rl78_bytes.n_base + rl78_bytes.n_ops;`
453			`/* We do it this way because we want the frag to have the`
454			`rl78_bytes in it, which we initialize above. */`
455			`bytes = frag_more (olen);`
456			`frag_then = frag_now;`
457			`frag_variant (rs_machine_dependent,`
458			`olen /* max_chars */,`
459
460			`olen /* subtype */,`
461
462
463
464			`frag_then->fr_opcode = bytes;`
465			`frag_then->fr_fix = olen + (bytes - frag_then->fr_literal);`
466			`frag_then->fr_subtype = olen;`
467			`frag_then->fr_var = 0;`
468			`}`
469			`else`
470			`{`
471			`bytes = frag_more (rl78_bytes.n_prefix + rl78_bytes.n_base + rl78_bytes.n_ops);`
472			`frag_then = frag_now;`
473			`}`
474	163	khays
475			`APPEND (prefix, n_prefix);`
476			`APPEND (base, n_base);`
477			`APPEND (ops, n_ops);`
478
479	166	khays	`if (rl78_bytes.link_relax)`
480			`{`
481			`fixS * f;`
482
483			`f = fix_new (frag_then,`
484			`(char *) bytes - frag_then->fr_literal,`
485			`0,`
486			`abs_section_sym,`
487			`rl78_bytes.link_relax \| rl78_bytes.n_fixups,`
488			`0,`
489			`BFD_RELOC_RL78_RELAX);`
490			`frag_then->tc_frag_data->link_relax_fixP = f;`
491			`}`
492
493	163	khays	`for (i = 0; i < rl78_bytes.n_fixups; i ++)`
494			`{`
495			`/* index: [nbytes][type] */`
496			`static int reloc_map[5][4] =`
497			`{`
498			`{ 0, 0 },`
499			`{ BFD_RELOC_8, BFD_RELOC_8_PCREL },`
500			`{ BFD_RELOC_16, BFD_RELOC_16_PCREL },`
501			`{ BFD_RELOC_24, BFD_RELOC_24_PCREL },`
502			`{ BFD_RELOC_32, BFD_RELOC_32_PCREL },`
503			`};`
504			`fixS * f;`
505
506			`idx = rl78_bytes.fixups[i].offset / 8;`
507			`rel = reloc_map [rl78_bytes.fixups[i].nbits / 8][(int) rl78_bytes.fixups[i].type];`
508
509			`if (rl78_bytes.fixups[i].reloc)`
510			`rel = rl78_bytes.fixups[i].reloc;`
511
512			`if (frag_then->tc_frag_data)`
513			`exp = & frag_then->tc_frag_data->fixups[i].exp;`
514			`else`
515			`exp = & rl78_bytes.fixups[i].exp;`
516
517			`f = fix_new_exp (frag_then,`
518			`(char *) bytes + idx - frag_then->fr_literal,`
519			`rl78_bytes.fixups[i].nbits / 8,`
520			`exp,`
521			`rl78_bytes.fixups[i].type == RL78REL_PCREL ? 1 : 0,`
522			`rel);`
523			`if (frag_then->tc_frag_data)`
524			`frag_then->tc_frag_data->fixups[i].fixP = f;`
525			`}`
526			`}`
527
528			`void`
529			`rl78_cons_fix_new (fragS * frag,`
530			`int where,`
531			`int size,`
532			`expressionS * exp)`
533			`{`
534			`bfd_reloc_code_real_type type;`
535
536			`switch (size)`
537			`{`
538			`case 1:`
539			`type = BFD_RELOC_8;`
540			`break;`
541			`case 2:`
542			`type = BFD_RELOC_16;`
543			`break;`
544			`case 3:`
545			`type = BFD_RELOC_24;`
546			`break;`
547			`case 4:`
548			`type = BFD_RELOC_32;`
549			`break;`
550			`default:`
551			`as_bad (_("unsupported constant size %d\n"), size);`
552			`return;`
553			`}`
554
555			`if (exp->X_op == O_subtract && exp->X_op_symbol)`
556			`{`
557			`if (size != 4 && size != 2 && size != 1)`
558			`as_bad (_("difference of two symbols only supported with .long, .short, or .byte"));`
559			`else`
560			`type = BFD_RELOC_RL78_DIFF;`
561			`}`
562
563			`fix_new_exp (frag, where, (int) size, exp, 0, type);`
564			`}`
565
566			`/* No relaxation just yet */`
567			`int`
568			`md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED)`
569			`{`
570			`return 0;`
571			`}`
572	166	khays
573	163	khays	`arelent **`
574			`tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)`
575			`{`
576			`static arelent * reloc[8];`
577			`int rp;`
578
579			`if (fixp->fx_r_type == BFD_RELOC_NONE)`
580			`{`
581			`reloc[0] = NULL;`
582			`return reloc;`
583			`}`
584
585			`if (fixp->fx_subsy`
586			`&& S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)`
587			`{`
588			`fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy);`
589			`fixp->fx_subsy = NULL;`
590			`}`
591
592			`reloc[0] = (arelent *) xmalloc (sizeof (arelent));`
593			`reloc[0]->sym_ptr_ptr = (asymbol *) xmalloc (sizeof (asymbol ));`
594			`* reloc[0]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);`
595			`reloc[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;`
596			`reloc[0]->addend = fixp->fx_offset;`
597
598			`if (fixp->fx_r_type == BFD_RELOC_RL78_32_OP`
599			`&& fixp->fx_subsy)`
600			`{`
601			`fixp->fx_r_type = BFD_RELOC_RL78_DIFF;`
602			`}`
603
604			`#define OPX(REL,SYM,ADD) \`
605			`reloc[rp] = (arelent *) xmalloc (sizeof (arelent)); \`
606			`reloc[rp]->sym_ptr_ptr = (asymbol *) xmalloc (sizeof (asymbol )); \`
607			`reloc[rp]->howto = bfd_reloc_type_lookup (stdoutput, REL); \`
608			`reloc[rp]->addend = ADD; \`
609			`* reloc[rp]->sym_ptr_ptr = SYM; \`
610			`reloc[rp]->address = fixp->fx_frag->fr_address + fixp->fx_where; \`
611			`reloc[++rp] = NULL`
612			`#define OPSYM(SYM) OPX(BFD_RELOC_RL78_SYM, SYM, 0)`
613			`#define OPIMM(IMM) OPX(BFD_RELOC_RL78_SYM, abs_symbol.bsym, IMM)`
614			`#define OP(OP) OPX(BFD_RELOC_RL78_##OP, *reloc[0]->sym_ptr_ptr, 0)`
615			`#define SYM0() reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RL78_SYM)`
616
617			`rp = 1;`
618
619			`/* Certain BFD relocations cannot be translated directly into`
620			`a single (non-Red Hat) RL78 relocation, but instead need`
621			`multiple RL78 relocations - handle them here. */`
622			`switch (fixp->fx_r_type)`
623			`{`
624			`case BFD_RELOC_RL78_DIFF:`
625			`SYM0 ();`
626			`OPSYM (symbol_get_bfdsym (fixp->fx_subsy));`
627			`OP(OP_SUBTRACT);`
628
629			`switch (fixp->fx_size)`
630			`{`
631			`case 1:`
632			`OP(ABS8);`
633			`break;`
634			`case 2:`
635			`OP (ABS16);`
636			`break;`
637			`case 4:`
638			`OP (ABS32);`
639			`break;`
640			`}`
641			`break;`
642
643			`case BFD_RELOC_RL78_NEG32:`
644			`SYM0 ();`
645			`OP (OP_NEG);`
646			`OP (ABS32);`
647			`break;`
648
649			`case BFD_RELOC_RL78_LO16:`
650			`SYM0 ();`
651			`OPIMM (0xffff);`
652			`OP (OP_AND);`
653			`OP (ABS16);`
654			`break;`
655
656			`case BFD_RELOC_RL78_HI16:`
657			`SYM0 ();`
658			`OPIMM (16);`
659			`OP (OP_SHRA);`
660			`OP (ABS16);`
661			`break;`
662
663			`case BFD_RELOC_RL78_HI8:`
664			`SYM0 ();`
665			`OPIMM (16);`
666			`OP (OP_SHRA);`
667			`OPIMM (0xff);`
668			`OP (OP_AND);`
669			`OP (ABS8);`
670			`break;`
671
672			`default:`
673			`reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);`
674			`reloc[1] = NULL;`
675			`break;`
676			`}`
677
678			`return reloc;`
679			`}`
680
681			`int`
682			`rl78_validate_fix_sub (struct fix * f)`
683			`{`
684			`/* We permit the subtraction of two symbols in a few cases. */`
685			`/* mov #sym1-sym2, R3 */`
686			`if (f->fx_r_type == BFD_RELOC_RL78_32_OP)`
687			`return 1;`
688			`/* .long sym1-sym2 */`
689			`if (f->fx_r_type == BFD_RELOC_RL78_DIFF`
690			`&& ! f->fx_pcrel`
691			`&& (f->fx_size == 4 \|\| f->fx_size == 2 \|\| f->fx_size == 1))`
692			`return 1;`
693			`return 0;`
694			`}`
695
696			`long`
697			`md_pcrel_from_section (fixS * fixP, segT sec)`
698			`{`
699			`long rv;`
700
701			`if (fixP->fx_addsy != NULL`
702			`&& (! S_IS_DEFINED (fixP->fx_addsy)`
703			`\|\| S_GET_SEGMENT (fixP->fx_addsy) != sec))`
704			`/* The symbol is undefined (or is defined but not in this section).`
705			`Let the linker figure it out. */`
706			`return 0;`
707
708			`rv = fixP->fx_frag->fr_address + fixP->fx_where;`
709			`switch (fixP->fx_r_type)`
710			`{`
711			`case BFD_RELOC_8_PCREL:`
712			`rv += 1;`
713			`break;`
714			`case BFD_RELOC_16_PCREL:`
715			`rv += 2;`
716			`break;`
717			`default:`
718			`break;`
719			`}`
720			`return rv;`
721			`}`
722
723			`void`
724			`md_apply_fix (struct fix * f ATTRIBUTE_UNUSED,`
725			`valueT * t ATTRIBUTE_UNUSED,`
726			`segT s ATTRIBUTE_UNUSED)`
727			`{`
728			`char * op;`
729			`unsigned long val;`
730
731			`if (f->fx_addsy && S_FORCE_RELOC (f->fx_addsy, 1))`
732			`return;`
733			`if (f->fx_subsy && S_FORCE_RELOC (f->fx_subsy, 1))`
734			`return;`
735
736			`op = f->fx_frag->fr_literal + f->fx_where;`
737			`val = (unsigned long) * t;`
738
739			`switch (f->fx_r_type)`
740			`{`
741			`case BFD_RELOC_NONE:`
742			`break;`
743
744	166	khays	`case BFD_RELOC_RL78_RELAX:`
745			`f->fx_done = 1;`
746			`break;`
747
748	163	khays	`case BFD_RELOC_8:`
749			`case BFD_RELOC_8_PCREL:`
750			`op[0] = val;`
751			`break;`
752
753			`case BFD_RELOC_16:`
754			`case BFD_RELOC_16_PCREL:`
755			`op[0] = val;`
756			`op[1] = val >> 8;`
757			`break;`
758
759			`case BFD_RELOC_24:`
760			`op[0] = val;`
761			`op[1] = val >> 8;`
762			`op[2] = val >> 16;`
763			`break;`
764
765			`case BFD_RELOC_32:`
766			`case BFD_RELOC_RL78_DIFF:`
767			`op[0] = val;`
768			`op[1] = val >> 8;`
769			`op[2] = val >> 16;`
770			`op[3] = val >> 24;`
771			`break;`
772
773			`default:`
774			`as_bad (_("Unknown reloc in md_apply_fix: %s"),`
775			`bfd_get_reloc_code_name (f->fx_r_type));`
776			`break;`
777			`}`
778
779			`if (f->fx_addsy == NULL)`
780			`f->fx_done = 1;`
781			`}`
782
783			`valueT`
784			`md_section_align (segT segment, valueT size)`
785			`{`
786			`int align = bfd_get_section_alignment (stdoutput, segment);`
787			`return ((size + (1 << align) - 1) & (-1 << align));`
788			`}`
789
790			`void`
791			`md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,`
792			`segT segment ATTRIBUTE_UNUSED,`
793			`fragS * fragP ATTRIBUTE_UNUSED)`
794			`{`
795			`/* No relaxation yet */`
796	166	khays	`fragP->fr_var = 0;`
797	163	khays	`}`