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cell-binutils  2.17cvs20070401
Defines | Functions | Variables
fr30-asm.c File Reference
#include "sysdep.h"
#include <stdio.h>
#include "ansidecl.h"
#include "bfd.h"
#include "symcat.h"
#include "fr30-desc.h"
#include "fr30-opc.h"
#include "opintl.h"
#include "xregex.h"
#include "libiberty.h"
#include "safe-ctype.h"

Go to the source code of this file.

Defines

#define min(a, b)   ((a) < (b) ? (a) : (b))
#define max(a, b)   ((a) > (b) ? (a) : (b))

Functions

static const char * parse_insn_normal (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *)
static int parse_register_number (const char **strp)
static const char * parse_register_list (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, const char **strp, int opindex ATTRIBUTE_UNUSED, unsigned long *valuep, int high_low, int load_store)
static const char * parse_low_register_list_ld (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_hi_register_list_ld (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_low_register_list_st (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_hi_register_list_st (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
const char * fr30_cgen_parse_operand (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *)
void fr30_cgen_init_asm (CGEN_CPU_DESC cd)
char * fr30_cgen_build_insn_regex (CGEN_INSN *insn)
const CGEN_INSN * fr30_cgen_assemble_insn (CGEN_CPU_DESC cd, const char *str, CGEN_FIELDS *fields, CGEN_INSN_BYTES_PTR buf, char **errmsg)

Variables

cgen_parse_fn *const fr30_cgen_parse_handlers []

Define Documentation

#define max (   a,
  b 
)    ((a) > (b) ? (a) : (b))

Definition at line 44 of file fr30-asm.c.

#define min (   a,
  b 
)    ((a) < (b) ? (a) : (b))

Definition at line 42 of file fr30-asm.c.


Function Documentation

const CGEN_INSN* fr30_cgen_assemble_insn ( CGEN_CPU_DESC  cd,
const char *  str,
CGEN_FIELDS *  fields,
CGEN_INSN_BYTES_PTR  buf,
char **  errmsg 
)

Definition at line 611 of file fr30-asm.c.

{
  const char *start;
  CGEN_INSN_LIST *ilist;
  const char *parse_errmsg = NULL;
  const char *insert_errmsg = NULL;
  int recognized_mnemonic = 0;

  /* Skip leading white space.  */
  while (ISSPACE (* str))
    ++ str;

  /* The instructions are stored in hashed lists.
     Get the first in the list.  */
  ilist = CGEN_ASM_LOOKUP_INSN (cd, str);

  /* Keep looking until we find a match.  */
  start = str;
  for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
    {
      const CGEN_INSN *insn = ilist->insn;
      recognized_mnemonic = 1;

#ifdef CGEN_VALIDATE_INSN_SUPPORTED 
      /* Not usually needed as unsupported opcodes
        shouldn't be in the hash lists.  */
      /* Is this insn supported by the selected cpu?  */
      if (! fr30_cgen_insn_supported (cd, insn))
       continue;
#endif
      /* If the RELAXED attribute is set, this is an insn that shouldn't be
        chosen immediately.  Instead, it is used during assembler/linker
        relaxation if possible.  */
      if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
       continue;

      str = start;

      /* Skip this insn if str doesn't look right lexically.  */
      if (CGEN_INSN_RX (insn) != NULL &&
         regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
       continue;

      /* Allow parse/insert handlers to obtain length of insn.  */
      CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);

      parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
      if (parse_errmsg != NULL)
       continue;

      /* ??? 0 is passed for `pc'.  */
      insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
                                           (bfd_vma) 0);
      if (insert_errmsg != NULL)
        continue;

      /* It is up to the caller to actually output the insn and any
         queued relocs.  */
      return insn;
    }

  {
    static char errbuf[150];
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
    const char *tmp_errmsg;

    /* If requesting verbose error messages, use insert_errmsg.
       Failing that, use parse_errmsg.  */
    tmp_errmsg = (insert_errmsg ? insert_errmsg :
                parse_errmsg ? parse_errmsg :
                recognized_mnemonic ?
                _("unrecognized form of instruction") :
                _("unrecognized instruction"));

    if (strlen (start) > 50)
      /* xgettext:c-format */
      sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
    else 
      /* xgettext:c-format */
      sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
#else
    if (strlen (start) > 50)
      /* xgettext:c-format */
      sprintf (errbuf, _("bad instruction `%.50s...'"), start);
    else 
      /* xgettext:c-format */
      sprintf (errbuf, _("bad instruction `%.50s'"), start);
#endif
      
    *errmsg = errbuf;
    return NULL;
  }
}

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char* fr30_cgen_build_insn_regex ( CGEN_INSN *  insn)

Definition at line 347 of file fr30-asm.c.

{  
  CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
  const char *mnem = CGEN_INSN_MNEMONIC (insn);
  char rxbuf[CGEN_MAX_RX_ELEMENTS];
  char *rx = rxbuf;
  const CGEN_SYNTAX_CHAR_TYPE *syn;
  int reg_err;

  syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));

  /* Mnemonics come first in the syntax string.  */
  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
    return _("missing mnemonic in syntax string");
  ++syn;

  /* Generate a case sensitive regular expression that emulates case
     insensitive matching in the "C" locale.  We cannot generate a case
     insensitive regular expression because in Turkish locales, 'i' and 'I'
     are not equal modulo case conversion.  */

  /* Copy the literal mnemonic out of the insn.  */
  for (; *mnem; mnem++)
    {
      char c = *mnem;

      if (ISALPHA (c))
       {
         *rx++ = '[';
         *rx++ = TOLOWER (c);
         *rx++ = TOUPPER (c);
         *rx++ = ']';
       }
      else
       *rx++ = c;
    }

  /* Copy any remaining literals from the syntax string into the rx.  */
  for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
    {
      if (CGEN_SYNTAX_CHAR_P (* syn)) 
       {
         char c = CGEN_SYNTAX_CHAR (* syn);

         switch (c) 
           {
             /* Escape any regex metacharacters in the syntax.  */
           case '.': case '[': case '\\': 
           case '*': case '^': case '$': 

#ifdef CGEN_ESCAPE_EXTENDED_REGEX
           case '?': case '{': case '}': 
           case '(': case ')': case '*':
           case '|': case '+': case ']':
#endif
             *rx++ = '\\';
             *rx++ = c;
             break;

           default:
             if (ISALPHA (c))
              {
                *rx++ = '[';
                *rx++ = TOLOWER (c);
                *rx++ = TOUPPER (c);
                *rx++ = ']';
              }
             else
              *rx++ = c;
             break;
           }
       }
      else
       {
         /* Replace non-syntax fields with globs.  */
         *rx++ = '.';
         *rx++ = '*';
       }
    }

  /* Trailing whitespace ok.  */
  * rx++ = '['; 
  * rx++ = ' '; 
  * rx++ = '\t'; 
  * rx++ = ']'; 
  * rx++ = '*'; 

  /* But anchor it after that.  */
  * rx++ = '$'; 
  * rx = '\0';

  CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
  reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);

  if (reg_err == 0) 
    return NULL;
  else
    {
      static char msg[80];

      regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
      regfree ((regex_t *) CGEN_INSN_RX (insn));
      free (CGEN_INSN_RX (insn));
      (CGEN_INSN_RX (insn)) = NULL;
      return msg;
    }
}

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Definition at line 322 of file fr30-asm.c.

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const char * fr30_cgen_parse_operand ( CGEN_CPU_DESC  cd,
int  opindex,
const char **  strp,
CGEN_FIELDS *  fields 
)

Definition at line 179 of file fr30-asm.c.

{
  const char * errmsg = NULL;
  /* Used by scalar operands that still need to be parsed.  */
  long junk ATTRIBUTE_UNUSED;

  switch (opindex)
    {
    case FR30_OPERAND_CRI :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_cr_names, & fields->f_CRi);
      break;
    case FR30_OPERAND_CRJ :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_cr_names, & fields->f_CRj);
      break;
    case FR30_OPERAND_R13 :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r13, & junk);
      break;
    case FR30_OPERAND_R14 :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r14, & junk);
      break;
    case FR30_OPERAND_R15 :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r15, & junk);
      break;
    case FR30_OPERAND_RI :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Ri);
      break;
    case FR30_OPERAND_RIC :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Ric);
      break;
    case FR30_OPERAND_RJ :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Rj);
      break;
    case FR30_OPERAND_RJC :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Rjc);
      break;
    case FR30_OPERAND_RS1 :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_dr_names, & fields->f_Rs1);
      break;
    case FR30_OPERAND_RS2 :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_dr_names, & fields->f_Rs2);
      break;
    case FR30_OPERAND_CC :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_CC, (unsigned long *) (& fields->f_cc));
      break;
    case FR30_OPERAND_CCC :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_CCC, (unsigned long *) (& fields->f_ccc));
      break;
    case FR30_OPERAND_DIR10 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR10, (unsigned long *) (& fields->f_dir10));
      break;
    case FR30_OPERAND_DIR8 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR8, (unsigned long *) (& fields->f_dir8));
      break;
    case FR30_OPERAND_DIR9 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR9, (unsigned long *) (& fields->f_dir9));
      break;
    case FR30_OPERAND_DISP10 :
      errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP10, (long *) (& fields->f_disp10));
      break;
    case FR30_OPERAND_DISP8 :
      errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP8, (long *) (& fields->f_disp8));
      break;
    case FR30_OPERAND_DISP9 :
      errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP9, (long *) (& fields->f_disp9));
      break;
    case FR30_OPERAND_I20 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I20, (unsigned long *) (& fields->f_i20));
      break;
    case FR30_OPERAND_I32 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I32, (unsigned long *) (& fields->f_i32));
      break;
    case FR30_OPERAND_I8 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I8, (unsigned long *) (& fields->f_i8));
      break;
    case FR30_OPERAND_LABEL12 :
      {
        bfd_vma value = 0;
        errmsg = cgen_parse_address (cd, strp, FR30_OPERAND_LABEL12, 0, NULL,  & value);
        fields->f_rel12 = value;
      }
      break;
    case FR30_OPERAND_LABEL9 :
      {
        bfd_vma value = 0;
        errmsg = cgen_parse_address (cd, strp, FR30_OPERAND_LABEL9, 0, NULL,  & value);
        fields->f_rel9 = value;
      }
      break;
    case FR30_OPERAND_M4 :
      errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_M4, (long *) (& fields->f_m4));
      break;
    case FR30_OPERAND_PS :
      errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_ps, & junk);
      break;
    case FR30_OPERAND_REGLIST_HI_LD :
      errmsg = parse_hi_register_list_ld (cd, strp, FR30_OPERAND_REGLIST_HI_LD, (unsigned long *) (& fields->f_reglist_hi_ld));
      break;
    case FR30_OPERAND_REGLIST_HI_ST :
      errmsg = parse_hi_register_list_st (cd, strp, FR30_OPERAND_REGLIST_HI_ST, (unsigned long *) (& fields->f_reglist_hi_st));
      break;
    case FR30_OPERAND_REGLIST_LOW_LD :
      errmsg = parse_low_register_list_ld (cd, strp, FR30_OPERAND_REGLIST_LOW_LD, (unsigned long *) (& fields->f_reglist_low_ld));
      break;
    case FR30_OPERAND_REGLIST_LOW_ST :
      errmsg = parse_low_register_list_st (cd, strp, FR30_OPERAND_REGLIST_LOW_ST, (unsigned long *) (& fields->f_reglist_low_st));
      break;
    case FR30_OPERAND_S10 :
      errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_S10, (long *) (& fields->f_s10));
      break;
    case FR30_OPERAND_U10 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U10, (unsigned long *) (& fields->f_u10));
      break;
    case FR30_OPERAND_U4 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U4, (unsigned long *) (& fields->f_u4));
      break;
    case FR30_OPERAND_U4C :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U4C, (unsigned long *) (& fields->f_u4c));
      break;
    case FR30_OPERAND_U8 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U8, (unsigned long *) (& fields->f_u8));
      break;
    case FR30_OPERAND_UDISP6 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_UDISP6, (unsigned long *) (& fields->f_udisp6));
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
      abort ();
  }

  return errmsg;
}

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static const char* parse_hi_register_list_ld ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 131 of file fr30-asm.c.

{
  return parse_register_list (cd, strp, opindex, valuep,
                           1 /* High.  */, 0 /* Load.  */);
}

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static const char* parse_hi_register_list_st ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 151 of file fr30-asm.c.

{
  return parse_register_list (cd, strp, opindex, valuep,
                           1 /* High.  */, 1 /* Store.  */);
}

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static const char * parse_insn_normal ( CGEN_CPU_DESC  cd,
const CGEN_INSN *  insn,
const char **  strp,
CGEN_FIELDS *  fields 
) [static]

Definition at line 470 of file fr30-asm.c.

{
  /* ??? Runtime added insns not handled yet.  */
  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
  const char *str = *strp;
  const char *errmsg;
  const char *p;
  const CGEN_SYNTAX_CHAR_TYPE * syn;
#ifdef CGEN_MNEMONIC_OPERANDS
  /* FIXME: wip */
  int past_opcode_p;
#endif

  /* For now we assume the mnemonic is first (there are no leading operands).
     We can parse it without needing to set up operand parsing.
     GAS's input scrubber will ensure mnemonics are lowercase, but we may
     not be called from GAS.  */
  p = CGEN_INSN_MNEMONIC (insn);
  while (*p && TOLOWER (*p) == TOLOWER (*str))
    ++p, ++str;

  if (* p)
    return _("unrecognized instruction");

#ifndef CGEN_MNEMONIC_OPERANDS
  if (* str && ! ISSPACE (* str))
    return _("unrecognized instruction");
#endif

  CGEN_INIT_PARSE (cd);
  cgen_init_parse_operand (cd);
#ifdef CGEN_MNEMONIC_OPERANDS
  past_opcode_p = 0;
#endif

  /* We don't check for (*str != '\0') here because we want to parse
     any trailing fake arguments in the syntax string.  */
  syn = CGEN_SYNTAX_STRING (syntax);

  /* Mnemonics come first for now, ensure valid string.  */
  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
    abort ();

  ++syn;

  while (* syn != 0)
    {
      /* Non operand chars must match exactly.  */
      if (CGEN_SYNTAX_CHAR_P (* syn))
       {
         /* FIXME: While we allow for non-GAS callers above, we assume the
            first char after the mnemonic part is a space.  */
         /* FIXME: We also take inappropriate advantage of the fact that
            GAS's input scrubber will remove extraneous blanks.  */
         if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
           {
#ifdef CGEN_MNEMONIC_OPERANDS
             if (CGEN_SYNTAX_CHAR(* syn) == ' ')
              past_opcode_p = 1;
#endif
             ++ syn;
             ++ str;
           }
         else if (*str)
           {
             /* Syntax char didn't match.  Can't be this insn.  */
             static char msg [80];

             /* xgettext:c-format */
             sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
                     CGEN_SYNTAX_CHAR(*syn), *str);
             return msg;
           }
         else
           {
             /* Ran out of input.  */
             static char msg [80];

             /* xgettext:c-format */
             sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
                     CGEN_SYNTAX_CHAR(*syn));
             return msg;
           }
         continue;
       }

      /* We have an operand of some sort.  */
      errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
                                     &str, fields);
      if (errmsg)
       return errmsg;

      /* Done with this operand, continue with next one.  */
      ++ syn;
    }

  /* If we're at the end of the syntax string, we're done.  */
  if (* syn == 0)
    {
      /* 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
        the insn and it is assumed that longer versions of insns appear
        before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3).  */
      while (ISSPACE (* str))
       ++ str;

      if (* str != '\0')
       return _("junk at end of line"); /* FIXME: would like to include `str' */

      return NULL;
    }

  /* We couldn't parse it.  */
  return _("unrecognized instruction");
}

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static const char* parse_low_register_list_ld ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 121 of file fr30-asm.c.

{
  return parse_register_list (cd, strp, opindex, valuep,
                           0 /* Low.  */, 0 /* Load.  */);
}

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static const char* parse_low_register_list_st ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 141 of file fr30-asm.c.

{
  return parse_register_list (cd, strp, opindex, valuep,
                           0 /* Low.  */, 1 /* Store.  */);
}

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static const char* parse_register_list ( CGEN_CPU_DESC cd  ATTRIBUTE_UNUSED,
const char **  strp,
int opindex  ATTRIBUTE_UNUSED,
unsigned long valuep,
int  high_low,
int  load_store 
) [static]

Definition at line 74 of file fr30-asm.c.

{
  *valuep = 0;
  while (**strp && **strp != ')')
    {
      int regno;

      if (**strp != 'R' && **strp != 'r')
       break;
      ++*strp;

      regno = parse_register_number (strp);
      if (regno == -1)
       return _("Register number is not valid");
      if (regno > 7 && !high_low)
       return _("Register must be between r0 and r7");
      if (regno < 8 && high_low)
       return _("Register must be between r8 and r15");

      if (high_low)
       regno -= 8;

      if (load_store) /* Mask is reversed for store.  */
       *valuep |= 0x80 >> regno;
      else
       *valuep |= 1 << regno;

      if (**strp == ',')
       {
         if (*(*strp + 1) == ')')
           break;
         ++*strp;
       }
    }

  if (!*strp || **strp != ')')
    return _("Register list is not valid");

  return NULL;
}

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static int parse_register_number ( const char **  strp) [static]

Definition at line 55 of file fr30-asm.c.

{
  int regno;

  if (**strp < '0' || **strp > '9')
    return -1; /* Error.  */
  regno = **strp - '0';
  ++*strp;

  if (**strp >= '0' && **strp <= '9')
    {
      regno = regno * 10 + (**strp - '0');
      ++*strp;
    }

  return regno;
}

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Variable Documentation

Initial value:

Definition at line 316 of file fr30-asm.c.