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cell-binutils  2.17cvs20070401
Defines | Functions | Variables
ip2k-asm.c File Reference
#include "sysdep.h"
#include <stdio.h>
#include "ansidecl.h"
#include "bfd.h"
#include "symcat.h"
#include "ip2k-desc.h"
#include "ip2k-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 const char * parse_fr (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_addr16 (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_addr16_cjp (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
static const char * parse_lit8 (CGEN_CPU_DESC cd, const char **strp, int opindex, long *valuep)
static const char * parse_bit3 (CGEN_CPU_DESC cd, const char **strp, int opindex, unsigned long *valuep)
const char * ip2k_cgen_parse_operand (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *)
void ip2k_cgen_init_asm (CGEN_CPU_DESC cd)
char * ip2k_cgen_build_insn_regex (CGEN_INSN *insn)
const CGEN_INSN * ip2k_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 ip2k_cgen_parse_handlers []

Define Documentation

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

Definition at line 44 of file ip2k-asm.c.

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

Definition at line 42 of file ip2k-asm.c.


Function Documentation

const CGEN_INSN* ip2k_cgen_assemble_insn ( CGEN_CPU_DESC  cd,
const char *  str,
CGEN_FIELDS *  fields,
CGEN_INSN_BYTES_PTR  buf,
char **  errmsg 
)

Definition at line 812 of file ip2k-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 (! ip2k_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* ip2k_cgen_build_insn_regex ( CGEN_INSN *  insn)

Definition at line 548 of file ip2k-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 523 of file ip2k-asm.c.

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const char * ip2k_cgen_parse_operand ( CGEN_CPU_DESC  cd,
int  opindex,
const char **  strp,
CGEN_FIELDS *  fields 
)

Definition at line 460 of file ip2k-asm.c.

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

  switch (opindex)
    {
    case IP2K_OPERAND_ADDR16CJP :
      errmsg = parse_addr16_cjp (cd, strp, IP2K_OPERAND_ADDR16CJP, (unsigned long *) (& fields->f_addr16cjp));
      break;
    case IP2K_OPERAND_ADDR16H :
      errmsg = parse_addr16 (cd, strp, IP2K_OPERAND_ADDR16H, (unsigned long *) (& fields->f_imm8));
      break;
    case IP2K_OPERAND_ADDR16L :
      errmsg = parse_addr16 (cd, strp, IP2K_OPERAND_ADDR16L, (unsigned long *) (& fields->f_imm8));
      break;
    case IP2K_OPERAND_ADDR16P :
      errmsg = parse_addr16_cjp (cd, strp, IP2K_OPERAND_ADDR16P, (unsigned long *) (& fields->f_page3));
      break;
    case IP2K_OPERAND_BITNO :
      errmsg = parse_bit3 (cd, strp, IP2K_OPERAND_BITNO, (unsigned long *) (& fields->f_bitno));
      break;
    case IP2K_OPERAND_CBIT :
      errmsg = cgen_parse_unsigned_integer (cd, strp, IP2K_OPERAND_CBIT, (unsigned long *) (& junk));
      break;
    case IP2K_OPERAND_DCBIT :
      errmsg = cgen_parse_unsigned_integer (cd, strp, IP2K_OPERAND_DCBIT, (unsigned long *) (& junk));
      break;
    case IP2K_OPERAND_FR :
      errmsg = parse_fr (cd, strp, IP2K_OPERAND_FR, (unsigned long *) (& fields->f_reg));
      break;
    case IP2K_OPERAND_LIT8 :
      errmsg = parse_lit8 (cd, strp, IP2K_OPERAND_LIT8, (long *) (& fields->f_imm8));
      break;
    case IP2K_OPERAND_PABITS :
      errmsg = cgen_parse_unsigned_integer (cd, strp, IP2K_OPERAND_PABITS, (unsigned long *) (& junk));
      break;
    case IP2K_OPERAND_RETI3 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, IP2K_OPERAND_RETI3, (unsigned long *) (& fields->f_reti3));
      break;
    case IP2K_OPERAND_ZBIT :
      errmsg = cgen_parse_unsigned_integer (cd, strp, IP2K_OPERAND_ZBIT, (unsigned long *) (& junk));
      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_addr16 ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 224 of file ip2k-asm.c.

{
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  bfd_reloc_code_real_type code = BFD_RELOC_NONE;
  bfd_vma value;

  if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16H)
    code = BFD_RELOC_IP2K_HI8DATA;
  else if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16L)
    code = BFD_RELOC_IP2K_LO8DATA;
  else
    {
      /* Something is very wrong. opindex has to be one of the above.  */
      errmsg = _("parse_addr16: invalid opindex.");
      return errmsg;
    }
  
  errmsg = cgen_parse_address (cd, strp, opindex, code,
                            & result_type, & value);
  if (errmsg == NULL)
    {
      /* We either have a relocation or a number now.  */
      if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
       {
         /* We got a number back.  */
         if (code == BFD_RELOC_IP2K_HI8DATA)
            value >>= 8;
         else
           /* code = BFD_RELOC_IP2K_LOW8DATA.  */
           value &= 0x00FF;
       }   
      *valuep = value;
    }

  return errmsg;
}

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static const char* parse_addr16_cjp ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 266 of file ip2k-asm.c.

{
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  bfd_reloc_code_real_type code = BFD_RELOC_NONE;
  bfd_vma value;
 
  if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16CJP)
    code = BFD_RELOC_IP2K_ADDR16CJP;
  else if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16P)
    code = BFD_RELOC_IP2K_PAGE3;

  errmsg = cgen_parse_address (cd, strp, opindex, code,
                            & result_type, & value);
  if (errmsg == NULL)
    {
      if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
       {
         if ((value & 0x1) == 0)  /* If the address is even .... */
           {
             if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16CJP)
                *valuep = (value >> 1) & 0x1FFF;  /* Should mask be 1FFF?  */
             else if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16P)
                *valuep = (value >> 14) & 0x7;
           }
          else
           errmsg = _("Byte address required. - must be even.");
       }
      else if (result_type == CGEN_PARSE_OPERAND_RESULT_QUEUED)
       {
         /* This will happen for things like (s2-s1) where s2 and s1
            are labels.  */
         *valuep = value;
       }
      else 
        errmsg = _("cgen_parse_address returned a symbol. Literal required.");
    }
  return errmsg; 
}

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static const char* parse_bit3 ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
unsigned long valuep 
) [static]

Definition at line 377 of file ip2k-asm.c.

{
  const char *errmsg;
  char mode = 0;
  long count = 0;
  unsigned long value;

  if (strncmp (*strp, "%bit", 4) == 0)
    {
      *strp += 4;
      mode = 1;
    }
  else if (strncmp (*strp, "%msbbit", 7) == 0)
    {
      *strp += 7;
      mode = 1;
    }
  else if (strncmp (*strp, "%lsbbit", 7) == 0)
    {
      *strp += 7;
      mode = 2;
    }

  errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
  if (errmsg)
    return errmsg;

  if (mode)
    {
      value = * valuep;
      if (value == 0)
       {
         errmsg = _("Attempt to find bit index of 0");
         return errmsg;
       }
    
      if (mode == 1)
       {
         count = 31;
         while ((value & 0x80000000) == 0)
           {
             count--;
             value <<= 1;
           }
       }
      else if (mode == 2)
       {
         count = 0;
         while ((value & 0x00000001) == 0)
           {
             count++;
             value >>= 1;
           }
       }
    
      *valuep = count;
    }

  return errmsg;
}

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

Definition at line 54 of file ip2k-asm.c.

{
  const char *errmsg;
  const char *old_strp;
  char *afteroffset; 
  enum cgen_parse_operand_result result_type;
  bfd_vma value;
  extern CGEN_KEYWORD ip2k_cgen_opval_register_names;
  bfd_vma tempvalue;

  old_strp = *strp;
  afteroffset = NULL;

  /* Check here to see if you're about to try parsing a w as the first arg
     and return an error if you are.  */
  if ((strncmp (*strp, "w", 1) == 0) || (strncmp (*strp, "W", 1) == 0))
    {
      (*strp)++;

      if ((strncmp (*strp, ",", 1) == 0) || ISSPACE (**strp))
       {
         /* We've been passed a w.  Return with an error message so that
            cgen will try the next parsing option.  */
         errmsg = _("W keyword invalid in FR operand slot.");
         return errmsg;
       }
      *strp = old_strp;
    }

  /* Attempt parse as register keyword. */
  errmsg = cgen_parse_keyword (cd, strp, & ip2k_cgen_opval_register_names,
                            (long *) valuep);
  if (*strp != NULL
      && errmsg == NULL)
    return errmsg;

  /* Attempt to parse for "(IP)".  */
  afteroffset = strstr (*strp, "(IP)");

  if (afteroffset == NULL)
    /* Make sure it's not in lower case.  */
    afteroffset = strstr (*strp, "(ip)");

  if (afteroffset != NULL)
    {
      if (afteroffset != *strp)
       {
         /* Invalid offset present.  */
         errmsg = _("offset(IP) is not a valid form");
         return errmsg;
       }
      else
       {
         *strp += 4; 
         *valuep = 0;
         errmsg = NULL;
         return errmsg;
       }
    }

  /* Attempt to parse for DP. ex: mov w, offset(DP)
                                  mov offset(DP),w   */

  /* Try parsing it as an address and see what comes back.  */
  afteroffset = strstr (*strp, "(DP)");

  if (afteroffset == NULL)
    /* Maybe it's in lower case.  */
    afteroffset = strstr (*strp, "(dp)");

  if (afteroffset != NULL)
    {
      if (afteroffset == *strp)
       {
         /* No offset present. Use 0 by default.  */
         tempvalue = 0;
         errmsg = NULL;
       }
      else
       errmsg = cgen_parse_address (cd, strp, opindex,
                                 BFD_RELOC_IP2K_FR_OFFSET,
                                 & result_type, & tempvalue);

      if (errmsg == NULL)
       {
         if (tempvalue <= 127)
           {
             /* Value is ok.  Fix up the first 2 bits and return.  */
             *valuep = 0x0100 | tempvalue;
             *strp += 4; /* Skip over the (DP) in *strp.  */
             return errmsg;
           }
         else
           {
             /* Found something there in front of (DP) but it's out
               of range.  */
             errmsg = _("(DP) offset out of range.");
             return errmsg;
           }
       }
    }


  /* Attempt to parse for SP. ex: mov w, offset(SP)
                                  mov offset(SP), w.  */
  afteroffset = strstr (*strp, "(SP)");

  if (afteroffset == NULL)
    /* Maybe it's in lower case.  */
    afteroffset = strstr (*strp, "(sp)");

  if (afteroffset != NULL)
    {
      if (afteroffset == *strp)
       {
         /* No offset present. Use 0 by default.  */
         tempvalue = 0;
         errmsg = NULL;
       }
      else
       errmsg = cgen_parse_address (cd, strp, opindex,
                                 BFD_RELOC_IP2K_FR_OFFSET,
                                 & result_type, & tempvalue);

      if (errmsg == NULL)
       {
         if (tempvalue <= 127)
           {
             /* Value is ok.  Fix up the first 2 bits and return.  */
             *valuep = 0x0180 | tempvalue;
             *strp += 4; /* Skip over the (SP) in *strp.  */
             return errmsg;
           }
         else
           {
             /* Found something there in front of (SP) but it's out
               of range.  */
             errmsg = _("(SP) offset out of range.");
             return errmsg;
           }
       }
    }

  /* Attempt to parse as an address.  */
  *strp = old_strp;
  errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_IP2K_FR9,
                            & result_type, & value);
  if (errmsg == NULL)
    {
      *valuep = value;

      /* If a parenthesis is found, warn about invalid form.  */
      if (**strp == '(')
       errmsg = _("illegal use of parentheses");

      /* If a numeric value is specified, ensure that it is between
        1 and 255.  */
      else if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
       {
         if (value < 0x1 || value > 0xff)
           errmsg = _("operand out of range (not between 1 and 255)");
       }
    }
  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 671 of file ip2k-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_lit8 ( CGEN_CPU_DESC  cd,
const char **  strp,
int  opindex,
long valuep 
) [static]

Definition at line 310 of file ip2k-asm.c.

{
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  bfd_reloc_code_real_type code = BFD_RELOC_NONE;
  bfd_vma value;

  /* Parse %OP relocating operators.  */
  if (strncmp (*strp, "%bank", 5) == 0)
    {
      *strp += 5;
      code = BFD_RELOC_IP2K_BANK;
    }
  else if (strncmp (*strp, "%lo8data", 8) == 0)
    {
      *strp += 8;
      code = BFD_RELOC_IP2K_LO8DATA;
    }
  else if (strncmp (*strp, "%hi8data", 8) == 0)
    {
      *strp += 8;
      code = BFD_RELOC_IP2K_HI8DATA;
    }
  else if (strncmp (*strp, "%ex8data", 8) == 0)
    {
      *strp += 8;
      code = BFD_RELOC_IP2K_EX8DATA;
    }
  else if (strncmp (*strp, "%lo8insn", 8) == 0)
    {
      *strp += 8;
      code = BFD_RELOC_IP2K_LO8INSN;
    }
  else if (strncmp (*strp, "%hi8insn", 8) == 0)
    {
      *strp += 8;
      code = BFD_RELOC_IP2K_HI8INSN;
    }

  /* Parse %op operand.  */
  if (code != BFD_RELOC_NONE)
    {
      errmsg = cgen_parse_address (cd, strp, opindex, code, 
                               & result_type, & value);
      if ((errmsg == NULL) &&
         (result_type != CGEN_PARSE_OPERAND_RESULT_QUEUED))
       errmsg = _("percent-operator operand is not a symbol");

      *valuep = value;
    }
  /* Parse as a number.  */
  else
    {
      errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);

      /* Truncate to eight bits to accept both signed and unsigned input.  */
      if (errmsg == NULL)
       *valuep &= 0xFF;
    }

  return errmsg;
}

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Variable Documentation

Initial value:

Definition at line 517 of file ip2k-asm.c.