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[/] [openrisc/] [trunk/] [gnu-stable/] [binutils-2.20.1/] [opcodes/] [openrisc-asm.c] - Diff between revs 816 and 818

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/* Assembler interface for targets using CGEN. -*- C -*-
/* Assembler interface for targets using CGEN. -*- C -*-
   CGEN: Cpu tools GENerator
   CGEN: Cpu tools GENerator
 
 
   THIS FILE IS MACHINE GENERATED WITH CGEN.
   THIS FILE IS MACHINE GENERATED WITH CGEN.
   - the resultant file is machine generated, cgen-asm.in isn't
   - the resultant file is machine generated, cgen-asm.in isn't
 
 
   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2007, 2008
   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2007, 2008
   Free Software Foundation, Inc.
   Free Software Foundation, Inc.
 
 
   This file is part of libopcodes.
   This file is part of libopcodes.
 
 
   This library is free software; you can redistribute it and/or modify
   This library is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   the Free Software Foundation; either version 3, or (at your option)
   any later version.
   any later version.
 
 
   It is distributed in the hope that it will be useful, but WITHOUT
   It is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
   License for more details.
   License for more details.
 
 
   You should have received a copy of the GNU General Public License
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation, Inc.,
   along with this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 
 
 
/* ??? Eventually more and more of this stuff can go to cpu-independent files.
/* ??? Eventually more and more of this stuff can go to cpu-independent files.
   Keep that in mind.  */
   Keep that in mind.  */
 
 
#include "sysdep.h"
#include "sysdep.h"
#include <stdio.h>
#include <stdio.h>
#include "ansidecl.h"
#include "ansidecl.h"
#include "bfd.h"
#include "bfd.h"
#include "symcat.h"
#include "symcat.h"
#include "openrisc-desc.h"
#include "openrisc-desc.h"
#include "openrisc-opc.h"
#include "openrisc-opc.h"
#include "opintl.h"
#include "opintl.h"
#include "xregex.h"
#include "xregex.h"
#include "libiberty.h"
#include "libiberty.h"
#include "safe-ctype.h"
#include "safe-ctype.h"
 
 
#undef  min
#undef  min
#define min(a,b) ((a) < (b) ? (a) : (b))
#define min(a,b) ((a) < (b) ? (a) : (b))
#undef  max
#undef  max
#define max(a,b) ((a) > (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))
 
 
static const char * parse_insn_normal
static const char * parse_insn_normal
  (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
  (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);


/* -- assembler routines inserted here.  */
/* -- assembler routines inserted here.  */
 
 
/* -- asm.c */
/* -- asm.c */
 
 
static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'");
static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'");
 
 
#define CGEN_VERBOSE_ASSEMBLER_ERRORS
#define CGEN_VERBOSE_ASSEMBLER_ERRORS
 
 
long
long
openrisc_sign_extend_16bit (long value)
openrisc_sign_extend_16bit (long value)
{
{
  return ((value & 0xffff) ^ 0x8000) - 0x8000;
  return ((value & 0xffff) ^ 0x8000) - 0x8000;
}
}
 
 
/* Handle hi().  */
/* Handle hi().  */
 
 
static const char *
static const char *
parse_hi16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)
parse_hi16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)
{
{
  const char *errmsg;
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  enum cgen_parse_operand_result result_type;
  unsigned long ret;
  unsigned long ret;
 
 
  if (**strp == '#')
  if (**strp == '#')
    ++*strp;
    ++*strp;
 
 
  if (strncasecmp (*strp, "hi(", 3) == 0)
  if (strncasecmp (*strp, "hi(", 3) == 0)
    {
    {
      bfd_vma value;
      bfd_vma value;
 
 
      *strp += 3;
      *strp += 3;
      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
                                   & result_type, & value);
                                   & result_type, & value);
      if (**strp != ')')
      if (**strp != ')')
        return MISSING_CLOSING_PARENTHESIS;
        return MISSING_CLOSING_PARENTHESIS;
 
 
      ++*strp;
      ++*strp;
      if (errmsg == NULL
      if (errmsg == NULL
          && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
          && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
        value >>= 16;
        value >>= 16;
      ret = value;
      ret = value;
    }
    }
  else
  else
    {
    {
      if (**strp == '-')
      if (**strp == '-')
        {
        {
          long value;
          long value;
 
 
          errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
          errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
          ret = value;
          ret = value;
        }
        }
      else
      else
        {
        {
          unsigned long value;
          unsigned long value;
 
 
          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
          ret = value;
          ret = value;
        }
        }
    }
    }
 
 
  *valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
  *valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
  return errmsg;
  return errmsg;
}
}
 
 
/* Handle lo().  */
/* Handle lo().  */
 
 
static const char *
static const char *
parse_lo16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)
parse_lo16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)
{
{
  const char *errmsg;
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  enum cgen_parse_operand_result result_type;
  unsigned long ret;
  unsigned long ret;
 
 
  if (**strp == '#')
  if (**strp == '#')
    ++*strp;
    ++*strp;
 
 
  if (strncasecmp (*strp, "lo(", 3) == 0)
  if (strncasecmp (*strp, "lo(", 3) == 0)
    {
    {
      bfd_vma value;
      bfd_vma value;
 
 
      *strp += 3;
      *strp += 3;
      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
                                   & result_type, & value);
                                   & result_type, & value);
      if (**strp != ')')
      if (**strp != ')')
        return MISSING_CLOSING_PARENTHESIS;
        return MISSING_CLOSING_PARENTHESIS;
 
 
      ++*strp;
      ++*strp;
      ret = value;
      ret = value;
    }
    }
  else
  else
    {
    {
      if (**strp == '-')
      if (**strp == '-')
        {
        {
          long value;
          long value;
 
 
          errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
          errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
          ret = value;
          ret = value;
        }
        }
      else
      else
        {
        {
          unsigned long value;
          unsigned long value;
 
 
          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
          ret = value;
          ret = value;
        }
        }
    }
    }
 
 
  *valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
  *valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
  return errmsg;
  return errmsg;
}
}
 
 
/* -- */
/* -- */
 
 
const char * openrisc_cgen_parse_operand
const char * openrisc_cgen_parse_operand
  (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
  (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
 
 
/* Main entry point for operand parsing.
/* Main entry point for operand parsing.
 
 
   This function is basically just a big switch statement.  Earlier versions
   This function is basically just a big switch statement.  Earlier versions
   used tables to look up the function to use, but
   used tables to look up the function to use, but
   - if the table contains both assembler and disassembler functions then
   - if the table contains both assembler and disassembler functions then
     the disassembler contains much of the assembler and vice-versa,
     the disassembler contains much of the assembler and vice-versa,
   - there's a lot of inlining possibilities as things grow,
   - there's a lot of inlining possibilities as things grow,
   - using a switch statement avoids the function call overhead.
   - using a switch statement avoids the function call overhead.
 
 
   This function could be moved into `parse_insn_normal', but keeping it
   This function could be moved into `parse_insn_normal', but keeping it
   separate makes clear the interface between `parse_insn_normal' and each of
   separate makes clear the interface between `parse_insn_normal' and each of
   the handlers.  */
   the handlers.  */
 
 
const char *
const char *
openrisc_cgen_parse_operand (CGEN_CPU_DESC cd,
openrisc_cgen_parse_operand (CGEN_CPU_DESC cd,
                           int opindex,
                           int opindex,
                           const char ** strp,
                           const char ** strp,
                           CGEN_FIELDS * fields)
                           CGEN_FIELDS * fields)
{
{
  const char * errmsg = NULL;
  const char * errmsg = NULL;
  /* Used by scalar operands that still need to be parsed.  */
  /* Used by scalar operands that still need to be parsed.  */
  long junk ATTRIBUTE_UNUSED;
  long junk ATTRIBUTE_UNUSED;
 
 
  switch (opindex)
  switch (opindex)
    {
    {
    case OPENRISC_OPERAND_ABS_26 :
    case OPENRISC_OPERAND_ABS_26 :
      {
      {
        bfd_vma value = 0;
        bfd_vma value = 0;
        errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_ABS_26, 0, NULL,  & value);
        errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_ABS_26, 0, NULL,  & value);
        fields->f_abs26 = value;
        fields->f_abs26 = value;
      }
      }
      break;
      break;
    case OPENRISC_OPERAND_DISP_26 :
    case OPENRISC_OPERAND_DISP_26 :
      {
      {
        bfd_vma value = 0;
        bfd_vma value = 0;
        errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_DISP_26, 0, NULL,  & value);
        errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_DISP_26, 0, NULL,  & value);
        fields->f_disp26 = value;
        fields->f_disp26 = value;
      }
      }
      break;
      break;
    case OPENRISC_OPERAND_HI16 :
    case OPENRISC_OPERAND_HI16 :
      errmsg = parse_hi16 (cd, strp, OPENRISC_OPERAND_HI16, (long *) (& fields->f_simm16));
      errmsg = parse_hi16 (cd, strp, OPENRISC_OPERAND_HI16, (long *) (& fields->f_simm16));
      break;
      break;
    case OPENRISC_OPERAND_LO16 :
    case OPENRISC_OPERAND_LO16 :
      errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_LO16, (long *) (& fields->f_lo16));
      errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_LO16, (long *) (& fields->f_lo16));
      break;
      break;
    case OPENRISC_OPERAND_OP_F_23 :
    case OPENRISC_OPERAND_OP_F_23 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_23, (unsigned long *) (& fields->f_op4));
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_23, (unsigned long *) (& fields->f_op4));
      break;
      break;
    case OPENRISC_OPERAND_OP_F_3 :
    case OPENRISC_OPERAND_OP_F_3 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_3, (unsigned long *) (& fields->f_op5));
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_3, (unsigned long *) (& fields->f_op5));
      break;
      break;
    case OPENRISC_OPERAND_RA :
    case OPENRISC_OPERAND_RA :
      errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r2);
      errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r2);
      break;
      break;
    case OPENRISC_OPERAND_RB :
    case OPENRISC_OPERAND_RB :
      errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r3);
      errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r3);
      break;
      break;
    case OPENRISC_OPERAND_RD :
    case OPENRISC_OPERAND_RD :
      errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r1);
      errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r1);
      break;
      break;
    case OPENRISC_OPERAND_SIMM_16 :
    case OPENRISC_OPERAND_SIMM_16 :
      errmsg = cgen_parse_signed_integer (cd, strp, OPENRISC_OPERAND_SIMM_16, (long *) (& fields->f_simm16));
      errmsg = cgen_parse_signed_integer (cd, strp, OPENRISC_OPERAND_SIMM_16, (long *) (& fields->f_simm16));
      break;
      break;
    case OPENRISC_OPERAND_UI16NC :
    case OPENRISC_OPERAND_UI16NC :
      errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_UI16NC, (long *) (& fields->f_i16nc));
      errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_UI16NC, (long *) (& fields->f_i16nc));
      break;
      break;
    case OPENRISC_OPERAND_UIMM_16 :
    case OPENRISC_OPERAND_UIMM_16 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_16, (unsigned long *) (& fields->f_uimm16));
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_16, (unsigned long *) (& fields->f_uimm16));
      break;
      break;
    case OPENRISC_OPERAND_UIMM_5 :
    case OPENRISC_OPERAND_UIMM_5 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_5, (unsigned long *) (& fields->f_uimm5));
      errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_5, (unsigned long *) (& fields->f_uimm5));
      break;
      break;
 
 
    default :
    default :
      /* xgettext:c-format */
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
      fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
      abort ();
      abort ();
  }
  }
 
 
  return errmsg;
  return errmsg;
}
}
 
 
cgen_parse_fn * const openrisc_cgen_parse_handlers[] =
cgen_parse_fn * const openrisc_cgen_parse_handlers[] =
{
{
  parse_insn_normal,
  parse_insn_normal,
};
};
 
 
void
void
openrisc_cgen_init_asm (CGEN_CPU_DESC cd)
openrisc_cgen_init_asm (CGEN_CPU_DESC cd)
{
{
  openrisc_cgen_init_opcode_table (cd);
  openrisc_cgen_init_opcode_table (cd);
  openrisc_cgen_init_ibld_table (cd);
  openrisc_cgen_init_ibld_table (cd);
  cd->parse_handlers = & openrisc_cgen_parse_handlers[0];
  cd->parse_handlers = & openrisc_cgen_parse_handlers[0];
  cd->parse_operand = openrisc_cgen_parse_operand;
  cd->parse_operand = openrisc_cgen_parse_operand;
#ifdef CGEN_ASM_INIT_HOOK
#ifdef CGEN_ASM_INIT_HOOK
CGEN_ASM_INIT_HOOK
CGEN_ASM_INIT_HOOK
#endif
#endif
}
}
 
 


 
 
/* Regex construction routine.
/* Regex construction routine.
 
 
   This translates an opcode syntax string into a regex string,
   This translates an opcode syntax string into a regex string,
   by replacing any non-character syntax element (such as an
   by replacing any non-character syntax element (such as an
   opcode) with the pattern '.*'
   opcode) with the pattern '.*'
 
 
   It then compiles the regex and stores it in the opcode, for
   It then compiles the regex and stores it in the opcode, for
   later use by openrisc_cgen_assemble_insn
   later use by openrisc_cgen_assemble_insn
 
 
   Returns NULL for success, an error message for failure.  */
   Returns NULL for success, an error message for failure.  */
 
 
char *
char *
openrisc_cgen_build_insn_regex (CGEN_INSN *insn)
openrisc_cgen_build_insn_regex (CGEN_INSN *insn)
{
{
  CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
  CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
  const char *mnem = CGEN_INSN_MNEMONIC (insn);
  const char *mnem = CGEN_INSN_MNEMONIC (insn);
  char rxbuf[CGEN_MAX_RX_ELEMENTS];
  char rxbuf[CGEN_MAX_RX_ELEMENTS];
  char *rx = rxbuf;
  char *rx = rxbuf;
  const CGEN_SYNTAX_CHAR_TYPE *syn;
  const CGEN_SYNTAX_CHAR_TYPE *syn;
  int reg_err;
  int reg_err;
 
 
  syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
  syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
 
 
  /* Mnemonics come first in the syntax string.  */
  /* Mnemonics come first in the syntax string.  */
  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
    return _("missing mnemonic in syntax string");
    return _("missing mnemonic in syntax string");
  ++syn;
  ++syn;
 
 
  /* Generate a case sensitive regular expression that emulates case
  /* Generate a case sensitive regular expression that emulates case
     insensitive matching in the "C" locale.  We cannot generate a case
     insensitive matching in the "C" locale.  We cannot generate a case
     insensitive regular expression because in Turkish locales, 'i' and 'I'
     insensitive regular expression because in Turkish locales, 'i' and 'I'
     are not equal modulo case conversion.  */
     are not equal modulo case conversion.  */
 
 
  /* Copy the literal mnemonic out of the insn.  */
  /* Copy the literal mnemonic out of the insn.  */
  for (; *mnem; mnem++)
  for (; *mnem; mnem++)
    {
    {
      char c = *mnem;
      char c = *mnem;
 
 
      if (ISALPHA (c))
      if (ISALPHA (c))
        {
        {
          *rx++ = '[';
          *rx++ = '[';
          *rx++ = TOLOWER (c);
          *rx++ = TOLOWER (c);
          *rx++ = TOUPPER (c);
          *rx++ = TOUPPER (c);
          *rx++ = ']';
          *rx++ = ']';
        }
        }
      else
      else
        *rx++ = c;
        *rx++ = c;
    }
    }
 
 
  /* Copy any remaining literals from the syntax string into the rx.  */
  /* Copy any remaining literals from the syntax string into the rx.  */
  for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
  for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
    {
    {
      if (CGEN_SYNTAX_CHAR_P (* syn))
      if (CGEN_SYNTAX_CHAR_P (* syn))
        {
        {
          char c = CGEN_SYNTAX_CHAR (* syn);
          char c = CGEN_SYNTAX_CHAR (* syn);
 
 
          switch (c)
          switch (c)
            {
            {
              /* Escape any regex metacharacters in the syntax.  */
              /* Escape any regex metacharacters in the syntax.  */
            case '.': case '[': case '\\':
            case '.': case '[': case '\\':
            case '*': case '^': case '$':
            case '*': case '^': case '$':
 
 
#ifdef CGEN_ESCAPE_EXTENDED_REGEX
#ifdef CGEN_ESCAPE_EXTENDED_REGEX
            case '?': case '{': case '}':
            case '?': case '{': case '}':
            case '(': case ')': case '*':
            case '(': case ')': case '*':
            case '|': case '+': case ']':
            case '|': case '+': case ']':
#endif
#endif
              *rx++ = '\\';
              *rx++ = '\\';
              *rx++ = c;
              *rx++ = c;
              break;
              break;
 
 
            default:
            default:
              if (ISALPHA (c))
              if (ISALPHA (c))
                {
                {
                  *rx++ = '[';
                  *rx++ = '[';
                  *rx++ = TOLOWER (c);
                  *rx++ = TOLOWER (c);
                  *rx++ = TOUPPER (c);
                  *rx++ = TOUPPER (c);
                  *rx++ = ']';
                  *rx++ = ']';
                }
                }
              else
              else
                *rx++ = c;
                *rx++ = c;
              break;
              break;
            }
            }
        }
        }
      else
      else
        {
        {
          /* Replace non-syntax fields with globs.  */
          /* Replace non-syntax fields with globs.  */
          *rx++ = '.';
          *rx++ = '.';
          *rx++ = '*';
          *rx++ = '*';
        }
        }
    }
    }
 
 
  /* Trailing whitespace ok.  */
  /* Trailing whitespace ok.  */
  * rx++ = '[';
  * rx++ = '[';
  * rx++ = ' ';
  * rx++ = ' ';
  * rx++ = '\t';
  * rx++ = '\t';
  * rx++ = ']';
  * rx++ = ']';
  * rx++ = '*';
  * rx++ = '*';
 
 
  /* But anchor it after that.  */
  /* But anchor it after that.  */
  * rx++ = '$';
  * rx++ = '$';
  * rx = '\0';
  * rx = '\0';
 
 
  CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
  CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
  reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
  reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
 
 
  if (reg_err == 0)
  if (reg_err == 0)
    return NULL;
    return NULL;
  else
  else
    {
    {
      static char msg[80];
      static char msg[80];
 
 
      regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
      regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
      regfree ((regex_t *) CGEN_INSN_RX (insn));
      regfree ((regex_t *) CGEN_INSN_RX (insn));
      free (CGEN_INSN_RX (insn));
      free (CGEN_INSN_RX (insn));
      (CGEN_INSN_RX (insn)) = NULL;
      (CGEN_INSN_RX (insn)) = NULL;
      return msg;
      return msg;
    }
    }
}
}
 
 


/* Default insn parser.
/* Default insn parser.
 
 
   The syntax string is scanned and operands are parsed and stored in FIELDS.
   The syntax string is scanned and operands are parsed and stored in FIELDS.
   Relocs are queued as we go via other callbacks.
   Relocs are queued as we go via other callbacks.
 
 
   ??? Note that this is currently an all-or-nothing parser.  If we fail to
   ??? Note that this is currently an all-or-nothing parser.  If we fail to
   parse the instruction, we return 0 and the caller will start over from
   parse the instruction, we return 0 and the caller will start over from
   the beginning.  Backtracking will be necessary in parsing subexpressions,
   the beginning.  Backtracking will be necessary in parsing subexpressions,
   but that can be handled there.  Not handling backtracking here may get
   but that can be handled there.  Not handling backtracking here may get
   expensive in the case of the m68k.  Deal with later.
   expensive in the case of the m68k.  Deal with later.
 
 
   Returns NULL for success, an error message for failure.  */
   Returns NULL for success, an error message for failure.  */
 
 
static const char *
static const char *
parse_insn_normal (CGEN_CPU_DESC cd,
parse_insn_normal (CGEN_CPU_DESC cd,
                   const CGEN_INSN *insn,
                   const CGEN_INSN *insn,
                   const char **strp,
                   const char **strp,
                   CGEN_FIELDS *fields)
                   CGEN_FIELDS *fields)
{
{
  /* ??? Runtime added insns not handled yet.  */
  /* ??? Runtime added insns not handled yet.  */
  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
  const char *str = *strp;
  const char *str = *strp;
  const char *errmsg;
  const char *errmsg;
  const char *p;
  const char *p;
  const CGEN_SYNTAX_CHAR_TYPE * syn;
  const CGEN_SYNTAX_CHAR_TYPE * syn;
#ifdef CGEN_MNEMONIC_OPERANDS
#ifdef CGEN_MNEMONIC_OPERANDS
  /* FIXME: wip */
  /* FIXME: wip */
  int past_opcode_p;
  int past_opcode_p;
#endif
#endif
 
 
  /* For now we assume the mnemonic is first (there are no leading operands).
  /* For now we assume the mnemonic is first (there are no leading operands).
     We can parse it without needing to set up operand parsing.
     We can parse it without needing to set up operand parsing.
     GAS's input scrubber will ensure mnemonics are lowercase, but we may
     GAS's input scrubber will ensure mnemonics are lowercase, but we may
     not be called from GAS.  */
     not be called from GAS.  */
  p = CGEN_INSN_MNEMONIC (insn);
  p = CGEN_INSN_MNEMONIC (insn);
  while (*p && TOLOWER (*p) == TOLOWER (*str))
  while (*p && TOLOWER (*p) == TOLOWER (*str))
    ++p, ++str;
    ++p, ++str;
 
 
  if (* p)
  if (* p)
    return _("unrecognized instruction");
    return _("unrecognized instruction");
 
 
#ifndef CGEN_MNEMONIC_OPERANDS
#ifndef CGEN_MNEMONIC_OPERANDS
  if (* str && ! ISSPACE (* str))
  if (* str && ! ISSPACE (* str))
    return _("unrecognized instruction");
    return _("unrecognized instruction");
#endif
#endif
 
 
  CGEN_INIT_PARSE (cd);
  CGEN_INIT_PARSE (cd);
  cgen_init_parse_operand (cd);
  cgen_init_parse_operand (cd);
#ifdef CGEN_MNEMONIC_OPERANDS
#ifdef CGEN_MNEMONIC_OPERANDS
  past_opcode_p = 0;
  past_opcode_p = 0;
#endif
#endif
 
 
  /* We don't check for (*str != '\0') here because we want to parse
  /* We don't check for (*str != '\0') here because we want to parse
     any trailing fake arguments in the syntax string.  */
     any trailing fake arguments in the syntax string.  */
  syn = CGEN_SYNTAX_STRING (syntax);
  syn = CGEN_SYNTAX_STRING (syntax);
 
 
  /* Mnemonics come first for now, ensure valid string.  */
  /* Mnemonics come first for now, ensure valid string.  */
  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
    abort ();
    abort ();
 
 
  ++syn;
  ++syn;
 
 
  while (* syn != 0)
  while (* syn != 0)
    {
    {
      /* Non operand chars must match exactly.  */
      /* Non operand chars must match exactly.  */
      if (CGEN_SYNTAX_CHAR_P (* syn))
      if (CGEN_SYNTAX_CHAR_P (* syn))
        {
        {
          /* FIXME: While we allow for non-GAS callers above, we assume the
          /* FIXME: While we allow for non-GAS callers above, we assume the
             first char after the mnemonic part is a space.  */
             first char after the mnemonic part is a space.  */
          /* FIXME: We also take inappropriate advantage of the fact that
          /* FIXME: We also take inappropriate advantage of the fact that
             GAS's input scrubber will remove extraneous blanks.  */
             GAS's input scrubber will remove extraneous blanks.  */
          if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
          if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
            {
            {
#ifdef CGEN_MNEMONIC_OPERANDS
#ifdef CGEN_MNEMONIC_OPERANDS
              if (CGEN_SYNTAX_CHAR(* syn) == ' ')
              if (CGEN_SYNTAX_CHAR(* syn) == ' ')
                past_opcode_p = 1;
                past_opcode_p = 1;
#endif
#endif
              ++ syn;
              ++ syn;
              ++ str;
              ++ str;
            }
            }
          else if (*str)
          else if (*str)
            {
            {
              /* Syntax char didn't match.  Can't be this insn.  */
              /* Syntax char didn't match.  Can't be this insn.  */
              static char msg [80];
              static char msg [80];
 
 
              /* xgettext:c-format */
              /* xgettext:c-format */
              sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
              sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
                       CGEN_SYNTAX_CHAR(*syn), *str);
                       CGEN_SYNTAX_CHAR(*syn), *str);
              return msg;
              return msg;
            }
            }
          else
          else
            {
            {
              /* Ran out of input.  */
              /* Ran out of input.  */
              static char msg [80];
              static char msg [80];
 
 
              /* xgettext:c-format */
              /* xgettext:c-format */
              sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
              sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
                       CGEN_SYNTAX_CHAR(*syn));
                       CGEN_SYNTAX_CHAR(*syn));
              return msg;
              return msg;
            }
            }
          continue;
          continue;
        }
        }
 
 
      /* We have an operand of some sort.  */
      /* We have an operand of some sort.  */
      errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
      errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
                                          &str, fields);
                                          &str, fields);
      if (errmsg)
      if (errmsg)
        return errmsg;
        return errmsg;
 
 
      /* Done with this operand, continue with next one.  */
      /* Done with this operand, continue with next one.  */
      ++ syn;
      ++ syn;
    }
    }
 
 
  /* If we're at the end of the syntax string, we're done.  */
  /* If we're at the end of the syntax string, we're done.  */
  if (* syn == 0)
  if (* syn == 0)
    {
    {
      /* FIXME: For the moment we assume a valid `str' can only contain
      /* FIXME: For the moment we assume a valid `str' can only contain
         blanks now.  IE: We needn't try again with a longer version of
         blanks now.  IE: We needn't try again with a longer version of
         the insn and it is assumed that longer versions of insns appear
         the insn and it is assumed that longer versions of insns appear
         before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3).  */
         before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3).  */
      while (ISSPACE (* str))
      while (ISSPACE (* str))
        ++ str;
        ++ str;
 
 
      if (* str != '\0')
      if (* str != '\0')
        return _("junk at end of line"); /* FIXME: would like to include `str' */
        return _("junk at end of line"); /* FIXME: would like to include `str' */
 
 
      return NULL;
      return NULL;
    }
    }
 
 
  /* We couldn't parse it.  */
  /* We couldn't parse it.  */
  return _("unrecognized instruction");
  return _("unrecognized instruction");
}
}


/* Main entry point.
/* Main entry point.
   This routine is called for each instruction to be assembled.
   This routine is called for each instruction to be assembled.
   STR points to the insn to be assembled.
   STR points to the insn to be assembled.
   We assume all necessary tables have been initialized.
   We assume all necessary tables have been initialized.
   The assembled instruction, less any fixups, is stored in BUF.
   The assembled instruction, less any fixups, is stored in BUF.
   Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
   Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
   still needs to be converted to target byte order, otherwise BUF is an array
   still needs to be converted to target byte order, otherwise BUF is an array
   of bytes in target byte order.
   of bytes in target byte order.
   The result is a pointer to the insn's entry in the opcode table,
   The result is a pointer to the insn's entry in the opcode table,
   or NULL if an error occured (an error message will have already been
   or NULL if an error occured (an error message will have already been
   printed).
   printed).
 
 
   Note that when processing (non-alias) macro-insns,
   Note that when processing (non-alias) macro-insns,
   this function recurses.
   this function recurses.
 
 
   ??? It's possible to make this cpu-independent.
   ??? It's possible to make this cpu-independent.
   One would have to deal with a few minor things.
   One would have to deal with a few minor things.
   At this point in time doing so would be more of a curiosity than useful
   At this point in time doing so would be more of a curiosity than useful
   [for example this file isn't _that_ big], but keeping the possibility in
   [for example this file isn't _that_ big], but keeping the possibility in
   mind helps keep the design clean.  */
   mind helps keep the design clean.  */
 
 
const CGEN_INSN *
const CGEN_INSN *
openrisc_cgen_assemble_insn (CGEN_CPU_DESC cd,
openrisc_cgen_assemble_insn (CGEN_CPU_DESC cd,
                           const char *str,
                           const char *str,
                           CGEN_FIELDS *fields,
                           CGEN_FIELDS *fields,
                           CGEN_INSN_BYTES_PTR buf,
                           CGEN_INSN_BYTES_PTR buf,
                           char **errmsg)
                           char **errmsg)
{
{
  const char *start;
  const char *start;
  CGEN_INSN_LIST *ilist;
  CGEN_INSN_LIST *ilist;
  const char *parse_errmsg = NULL;
  const char *parse_errmsg = NULL;
  const char *insert_errmsg = NULL;
  const char *insert_errmsg = NULL;
  int recognized_mnemonic = 0;
  int recognized_mnemonic = 0;
 
 
  /* Skip leading white space.  */
  /* Skip leading white space.  */
  while (ISSPACE (* str))
  while (ISSPACE (* str))
    ++ str;
    ++ str;
 
 
  /* The instructions are stored in hashed lists.
  /* The instructions are stored in hashed lists.
     Get the first in the list.  */
     Get the first in the list.  */
  ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
  ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
 
 
  /* Keep looking until we find a match.  */
  /* Keep looking until we find a match.  */
  start = str;
  start = str;
  for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
  for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
    {
    {
      const CGEN_INSN *insn = ilist->insn;
      const CGEN_INSN *insn = ilist->insn;
      recognized_mnemonic = 1;
      recognized_mnemonic = 1;
 
 
#ifdef CGEN_VALIDATE_INSN_SUPPORTED 
#ifdef CGEN_VALIDATE_INSN_SUPPORTED 
      /* Not usually needed as unsupported opcodes
      /* Not usually needed as unsupported opcodes
         shouldn't be in the hash lists.  */
         shouldn't be in the hash lists.  */
      /* Is this insn supported by the selected cpu?  */
      /* Is this insn supported by the selected cpu?  */
      if (! openrisc_cgen_insn_supported (cd, insn))
      if (! openrisc_cgen_insn_supported (cd, insn))
        continue;
        continue;
#endif
#endif
      /* If the RELAXED attribute is set, this is an insn that shouldn't be
      /* If the RELAXED attribute is set, this is an insn that shouldn't be
         chosen immediately.  Instead, it is used during assembler/linker
         chosen immediately.  Instead, it is used during assembler/linker
         relaxation if possible.  */
         relaxation if possible.  */
      if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
      if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
        continue;
        continue;
 
 
      str = start;
      str = start;
 
 
      /* Skip this insn if str doesn't look right lexically.  */
      /* Skip this insn if str doesn't look right lexically.  */
      if (CGEN_INSN_RX (insn) != NULL &&
      if (CGEN_INSN_RX (insn) != NULL &&
          regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
          regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
        continue;
        continue;
 
 
      /* Allow parse/insert handlers to obtain length of insn.  */
      /* Allow parse/insert handlers to obtain length of insn.  */
      CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
      CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
 
 
      parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
      parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
      if (parse_errmsg != NULL)
      if (parse_errmsg != NULL)
        continue;
        continue;
 
 
      /* ??? 0 is passed for `pc'.  */
      /* ??? 0 is passed for `pc'.  */
      insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
      insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
                                                 (bfd_vma) 0);
                                                 (bfd_vma) 0);
      if (insert_errmsg != NULL)
      if (insert_errmsg != NULL)
        continue;
        continue;
 
 
      /* It is up to the caller to actually output the insn and any
      /* It is up to the caller to actually output the insn and any
         queued relocs.  */
         queued relocs.  */
      return insn;
      return insn;
    }
    }
 
 
  {
  {
    static char errbuf[150];
    static char errbuf[150];
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
    const char *tmp_errmsg;
    const char *tmp_errmsg;
 
 
    /* If requesting verbose error messages, use insert_errmsg.
    /* If requesting verbose error messages, use insert_errmsg.
       Failing that, use parse_errmsg.  */
       Failing that, use parse_errmsg.  */
    tmp_errmsg = (insert_errmsg ? insert_errmsg :
    tmp_errmsg = (insert_errmsg ? insert_errmsg :
                  parse_errmsg ? parse_errmsg :
                  parse_errmsg ? parse_errmsg :
                  recognized_mnemonic ?
                  recognized_mnemonic ?
                  _("unrecognized form of instruction") :
                  _("unrecognized form of instruction") :
                  _("unrecognized instruction"));
                  _("unrecognized instruction"));
 
 
    if (strlen (start) > 50)
    if (strlen (start) > 50)
      /* xgettext:c-format */
      /* xgettext:c-format */
      sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
      sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
    else
    else
      /* xgettext:c-format */
      /* xgettext:c-format */
      sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
      sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
#else
#else
    if (strlen (start) > 50)
    if (strlen (start) > 50)
      /* xgettext:c-format */
      /* xgettext:c-format */
      sprintf (errbuf, _("bad instruction `%.50s...'"), start);
      sprintf (errbuf, _("bad instruction `%.50s...'"), start);
    else
    else
      /* xgettext:c-format */
      /* xgettext:c-format */
      sprintf (errbuf, _("bad instruction `%.50s'"), start);
      sprintf (errbuf, _("bad instruction `%.50s'"), start);
#endif
#endif
 
 
    *errmsg = errbuf;
    *errmsg = errbuf;
    return NULL;
    return NULL;
  }
  }
}
}
 
 

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