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cell-binutils  2.17cvs20070401
Defines | Functions | Variables
mt-asm.c File Reference
#include "sysdep.h"
#include <stdio.h>
#include "ansidecl.h"
#include "bfd.h"
#include "symcat.h"
#include "mt-desc.h"
#include "mt-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 signed_out_of_bounds (long val)
static const char * parse_loopsize (CGEN_CPU_DESC cd, const char **strp, int opindex, void *arg)
static const char * parse_imm16 (CGEN_CPU_DESC cd, const char **strp, int opindex, void *arg)
static const char * parse_dup (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_ball (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_xmode (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_rc (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_cbrb (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_rbbc (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_type (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
const char * mt_cgen_parse_operand (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *)
void mt_cgen_init_asm (CGEN_CPU_DESC cd)
char * mt_cgen_build_insn_regex (CGEN_INSN *insn)
const CGEN_INSN * mt_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 mt_cgen_parse_handlers []

Define Documentation

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

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

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

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


Function Documentation

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

Definition at line 896 of file mt-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 (! mt_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* mt_cgen_build_insn_regex ( CGEN_INSN *  insn)

Definition at line 632 of file mt-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 607 of file mt-asm.c.

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

Definition at line 418 of file mt-asm.c.

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

  switch (opindex)
    {
    case MT_OPERAND_A23 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_A23, (unsigned long *) (& fields->f_a23));
      break;
    case MT_OPERAND_BALL :
      errmsg = parse_ball (cd, strp, MT_OPERAND_BALL, (unsigned long *) (& fields->f_ball));
      break;
    case MT_OPERAND_BALL2 :
      errmsg = parse_ball (cd, strp, MT_OPERAND_BALL2, (unsigned long *) (& fields->f_ball2));
      break;
    case MT_OPERAND_BANKADDR :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BANKADDR, (unsigned long *) (& fields->f_bankaddr));
      break;
    case MT_OPERAND_BRC :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC, (unsigned long *) (& fields->f_brc));
      break;
    case MT_OPERAND_BRC2 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC2, (unsigned long *) (& fields->f_brc2));
      break;
    case MT_OPERAND_CB1INCR :
      errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB1INCR, (long *) (& fields->f_cb1incr));
      break;
    case MT_OPERAND_CB1SEL :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB1SEL, (unsigned long *) (& fields->f_cb1sel));
      break;
    case MT_OPERAND_CB2INCR :
      errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB2INCR, (long *) (& fields->f_cb2incr));
      break;
    case MT_OPERAND_CB2SEL :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB2SEL, (unsigned long *) (& fields->f_cb2sel));
      break;
    case MT_OPERAND_CBRB :
      errmsg = parse_cbrb (cd, strp, MT_OPERAND_CBRB, (unsigned long *) (& fields->f_cbrb));
      break;
    case MT_OPERAND_CBS :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBS, (unsigned long *) (& fields->f_cbs));
      break;
    case MT_OPERAND_CBX :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBX, (unsigned long *) (& fields->f_cbx));
      break;
    case MT_OPERAND_CCB :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CCB, (unsigned long *) (& fields->f_ccb));
      break;
    case MT_OPERAND_CDB :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CDB, (unsigned long *) (& fields->f_cdb));
      break;
    case MT_OPERAND_CELL :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CELL, (unsigned long *) (& fields->f_cell));
      break;
    case MT_OPERAND_COLNUM :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_COLNUM, (unsigned long *) (& fields->f_colnum));
      break;
    case MT_OPERAND_CONTNUM :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CONTNUM, (unsigned long *) (& fields->f_contnum));
      break;
    case MT_OPERAND_CR :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CR, (unsigned long *) (& fields->f_cr));
      break;
    case MT_OPERAND_CTXDISP :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CTXDISP, (unsigned long *) (& fields->f_ctxdisp));
      break;
    case MT_OPERAND_DUP :
      errmsg = parse_dup (cd, strp, MT_OPERAND_DUP, (unsigned long *) (& fields->f_dup));
      break;
    case MT_OPERAND_FBDISP :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBDISP, (unsigned long *) (& fields->f_fbdisp));
      break;
    case MT_OPERAND_FBINCR :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBINCR, (unsigned long *) (& fields->f_fbincr));
      break;
    case MT_OPERAND_FRDR :
      errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_dr);
      break;
    case MT_OPERAND_FRDRRR :
      errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_drrr);
      break;
    case MT_OPERAND_FRSR1 :
      errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr1);
      break;
    case MT_OPERAND_FRSR2 :
      errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr2);
      break;
    case MT_OPERAND_ID :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ID, (unsigned long *) (& fields->f_id));
      break;
    case MT_OPERAND_IMM16 :
      errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16, (long *) (& fields->f_imm16s));
      break;
    case MT_OPERAND_IMM16L :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_IMM16L, (unsigned long *) (& fields->f_imm16l));
      break;
    case MT_OPERAND_IMM16O :
      errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16O, (unsigned long *) (& fields->f_imm16s));
      break;
    case MT_OPERAND_IMM16Z :
      errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16Z, (unsigned long *) (& fields->f_imm16u));
      break;
    case MT_OPERAND_INCAMT :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCAMT, (unsigned long *) (& fields->f_incamt));
      break;
    case MT_OPERAND_INCR :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCR, (unsigned long *) (& fields->f_incr));
      break;
    case MT_OPERAND_LENGTH :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_LENGTH, (unsigned long *) (& fields->f_length));
      break;
    case MT_OPERAND_LOOPSIZE :
      errmsg = parse_loopsize (cd, strp, MT_OPERAND_LOOPSIZE, (unsigned long *) (& fields->f_loopo));
      break;
    case MT_OPERAND_MASK :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK, (unsigned long *) (& fields->f_mask));
      break;
    case MT_OPERAND_MASK1 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK1, (unsigned long *) (& fields->f_mask1));
      break;
    case MT_OPERAND_MODE :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MODE, (unsigned long *) (& fields->f_mode));
      break;
    case MT_OPERAND_PERM :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_PERM, (unsigned long *) (& fields->f_perm));
      break;
    case MT_OPERAND_RBBC :
      errmsg = parse_rbbc (cd, strp, MT_OPERAND_RBBC, (unsigned long *) (& fields->f_rbbc));
      break;
    case MT_OPERAND_RC :
      errmsg = parse_rc (cd, strp, MT_OPERAND_RC, (unsigned long *) (& fields->f_rc));
      break;
    case MT_OPERAND_RC1 :
      errmsg = parse_rc (cd, strp, MT_OPERAND_RC1, (unsigned long *) (& fields->f_rc1));
      break;
    case MT_OPERAND_RC2 :
      errmsg = parse_rc (cd, strp, MT_OPERAND_RC2, (unsigned long *) (& fields->f_rc2));
      break;
    case MT_OPERAND_RC3 :
      errmsg = parse_rc (cd, strp, MT_OPERAND_RC3, (unsigned long *) (& fields->f_rc3));
      break;
    case MT_OPERAND_RCNUM :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RCNUM, (unsigned long *) (& fields->f_rcnum));
      break;
    case MT_OPERAND_RDA :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RDA, (unsigned long *) (& fields->f_rda));
      break;
    case MT_OPERAND_ROWNUM :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM, (unsigned long *) (& fields->f_rownum));
      break;
    case MT_OPERAND_ROWNUM1 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM1, (unsigned long *) (& fields->f_rownum1));
      break;
    case MT_OPERAND_ROWNUM2 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM2, (unsigned long *) (& fields->f_rownum2));
      break;
    case MT_OPERAND_SIZE :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_SIZE, (unsigned long *) (& fields->f_size));
      break;
    case MT_OPERAND_TYPE :
      errmsg = parse_type (cd, strp, MT_OPERAND_TYPE, (unsigned long *) (& fields->f_type));
      break;
    case MT_OPERAND_WR :
      errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_WR, (unsigned long *) (& fields->f_wr));
      break;
    case MT_OPERAND_XMODE :
      errmsg = parse_xmode (cd, strp, MT_OPERAND_XMODE, (unsigned long *) (& fields->f_xmode));
      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_ball ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 238 of file mt-asm.c.

{
  const char *errmsg = NULL;

  if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0)
    {
      *strp += 3;
      *valuep = 1;
    }
  else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0)
    {
      *strp += 3;
      *valuep = 0;
    }
  else
    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);

  return errmsg;
}

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

Definition at line 310 of file mt-asm.c.

{
  const char *errmsg = NULL;

  if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0)
    {
      *strp += 2;
      *valuep = 1;
    }
  else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0)
    {
      *strp += 2;
      *valuep = 0;
    }
  else
    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);

  return errmsg;
}

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

Definition at line 213 of file mt-asm.c.

{
  const char *errmsg = NULL;

  if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0)
    {
      *strp += 3;
      *valuep = 1;
    }
  else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0)
    {
      *strp += 2;
      *valuep = 0;
    }
  else
    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);

  return errmsg;
}

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static const char* parse_imm16 ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
void *  arg 
) [static]

Definition at line 89 of file mt-asm.c.

{
  signed long * valuep = (signed long *) arg;
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  bfd_reloc_code_real_type code = BFD_RELOC_NONE;
  bfd_vma value;

  /* Is it a control transfer instructions?  */ 
  if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O)
    {
      code = BFD_RELOC_16_PCREL;
      errmsg = cgen_parse_address (cd, strp, opindex, code,
                                   & result_type, & value);
      if (errmsg == NULL)
       {
         if (signed_out_of_bounds (value))
           errmsg = _("Operand out of range. Must be between -32768 and 32767.");
       }
      *valuep = value;
      return errmsg;
    }

  /* If it's not a control transfer instruction, then
     we have to check for %OP relocating operators.  */
  if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L)
    ;
  else if (strncmp (*strp, "%hi16", 5) == 0)
    {
      *strp += 5;
      code = BFD_RELOC_HI16;
    }
  else if (strncmp (*strp, "%lo16", 5) == 0)
    {
      *strp += 5;
      code = BFD_RELOC_LO16;
    }

  /* If we found a %OP relocating operator, then parse it as an address.
     If not, we need to parse it as an integer, either signed or unsigned
     depending on which operand type we have.  */
  if (code != BFD_RELOC_NONE)
    {
       /* %OP relocating operator found.  */
       errmsg = cgen_parse_address (cd, strp, opindex, code,
                                   & result_type, & value);
       if (errmsg == NULL)
        {
           switch (result_type)
            {
            case (CGEN_PARSE_OPERAND_RESULT_NUMBER):
              if (code == BFD_RELOC_HI16)
               value = (value >> 16) & 0xFFFF;
              else if (code == BFD_RELOC_LO16)
               value = value  & 0xFFFF;
              else 
               errmsg = _("Biiiig Trouble in parse_imm16!");
              break;

            case (CGEN_PARSE_OPERAND_RESULT_QUEUED):
              /* No special processing for this case.  */
              break;

            default:
              errmsg = _("%operator operand is not a symbol");
              break;
             }
        }
       *valuep = value;
    }
  else
    {
      /* Parse hex values like 0xffff as unsigned, and sign extend
        them manually.  */
      int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16);

      if ((*strp)[0] == '0'
         && ((*strp)[1] == 'x' || (*strp)[1] == 'X'))
       parse_signed = 0;

      /* No relocating operator.  Parse as an number.  */
      if (parse_signed)
       {
          /* Parse as as signed integer.  */
 
          errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);

          if (errmsg == NULL) 
           {
#if 0
             /* Manual range checking is needed for the signed case.  */
             if (*valuep & 0x8000)
                value = 0xffff0000 | *valuep;
             else 
                value = *valuep;

             if (signed_out_of_bounds (value))
               errmsg = _("Operand out of range. Must be between -32768 and 32767.");
             /* Truncate to 16 bits. This is necessary
               because cgen will have sign extended *valuep.  */
             *valuep &= 0xFFFF; 
#endif
           }
       }
      else  
       {
          /* MT_OPERAND_IMM16Z.  Parse as an unsigned integer.  */
          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep);

         if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16
             && *valuep >= 0x8000
             && *valuep <= 0xffff)
           *valuep -= 0x10000;
       }
    }

  return errmsg;
}

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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 755 of file mt-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_loopsize ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
void *  arg 
) [static]

Definition at line 64 of file mt-asm.c.

{
  signed long * valuep = (signed long *) arg;
  const char *errmsg;
  bfd_reloc_code_real_type code = BFD_RELOC_NONE;
  enum cgen_parse_operand_result result_type;
  bfd_vma value;

  /* Is it a control transfer instructions?  */ 
  if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE)
    {
      code = BFD_RELOC_MT_PCINSN8;
      errmsg = cgen_parse_address (cd, strp, opindex, code,
                                   & result_type, & value);
      *valuep = value;
      return errmsg;
    }

  abort ();
}

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

Definition at line 334 of file mt-asm.c.

{
  const char *errmsg = NULL;

  if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0)
    {
      *strp += 2;
      *valuep = 0;
    }
  else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0)
    {
      *strp += 3;
      *valuep = 1;
    }
  else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0)
    {
      *strp += 3;
      *valuep = 2;
    }
  else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0)
    {
      *strp += 2;
      *valuep = 3;
    }
  else
    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);

  return errmsg;
}

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

Definition at line 286 of file mt-asm.c.

{
  const char *errmsg = NULL;

  if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0)
    {
      *strp += 1;
      *valuep = 1;
    }
  else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0)
    {
      *strp += 1;
      *valuep = 0;
    }
  else
    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);

  return errmsg;
}

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

Definition at line 368 of file mt-asm.c.

{
  const char *errmsg = NULL;

  if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0)
    {
      *strp += 3;
      *valuep = 0;
    }
  else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0)
    {
      *strp += 4;
      *valuep = 1;
    }
  else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0)
    {
      *strp += 2;
      *valuep = 2;
    }
  else
    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);

 if ((errmsg == NULL) && (*valuep == 3))
    errmsg = _("invalid operand.  type may have values 0,1,2 only.");

  return errmsg;
}

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

Definition at line 262 of file mt-asm.c.

{
  const char *errmsg = NULL;

  if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0)
    {
      *strp += 2;
      *valuep = 1;
    }
  else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0)
    {
      *strp += 2;
      *valuep = 0;
    }
  else
    errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);

  return errmsg;
}

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static int signed_out_of_bounds ( long  val) [static]

Definition at line 56 of file mt-asm.c.

{
  if ((val < -32768) || (val > 32767))
    return 1;
  return 0;
}

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Variable Documentation

Initial value:

Definition at line 601 of file mt-asm.c.