#include "sysdep.h"
#include <stdio.h>
#include "ansidecl.h"
#include "bfd.h"
#include "symcat.h"
#include "openrisc-desc.h"
#include "openrisc-opc.h"
#include "opintl.h"
#include "xregex.h"
#include "libiberty.h"
#include "safe-ctype.h"
#undef min
#define min(a,b) ((a) < (b) ? (a) : (b))
#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))
static const char * parse_insn_normal
(CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
#define CGEN_VERBOSE_ASSEMBLER_ERRORS
static const char * parse_hi16
PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
static const char * parse_lo16
PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
long
openrisc_sign_extend_16bit (value)
long value;
{
return ((value & 0xffff) ^ 0x8000) - 0x8000;
}
static const char *
parse_hi16 (cd, strp, opindex, valuep)
CGEN_CPU_DESC cd;
const char **strp;
int opindex;
unsigned long *valuep;
{
const char *errmsg;
enum cgen_parse_operand_result result_type;
unsigned long ret;
if (**strp == '#')
++*strp;
if (strncasecmp (*strp, "hi(", 3) == 0)
{
bfd_vma value;
*strp += 3;
#if 0
errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
if (errmsg != NULL)
fprintf (stderr, "parse_hi: %s\n", errmsg);
if (errmsg != NULL)
#endif
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
&result_type, &value);
if (**strp != ')')
return _("missing `)'");
++*strp;
if (errmsg == NULL
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
value >>= 16;
ret = value;
}
else
{
if (**strp == '-')
{
long value;
errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
ret = value;
}
else
{
unsigned long value;
errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
ret = value;
}
}
*valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
return errmsg;
}
static const char *
parse_lo16 (cd, strp, opindex, valuep)
CGEN_CPU_DESC cd;
const char **strp;
int opindex;
unsigned long *valuep;
{
const char *errmsg;
enum cgen_parse_operand_result result_type;
unsigned long ret;
if (**strp == '#')
++*strp;
if (strncasecmp (*strp, "lo(", 3) == 0)
{
bfd_vma value;
*strp += 3;
#if 0
errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
if (errmsg != NULL)
fprintf (stderr, "parse_lo: %s\n", errmsg);
if (errmsg != NULL)
#endif
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
&result_type, &value);
if (**strp != ')')
return _("missing `)'");
++*strp;
ret = value;
}
else
{
if (**strp == '-')
{
long value;
errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
ret = value;
}
else
{
unsigned long value;
errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
ret = value;
}
}
*valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
return errmsg;
}
const char * openrisc_cgen_parse_operand
PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *));
const char *
openrisc_cgen_parse_operand (cd, opindex, strp, fields)
CGEN_CPU_DESC cd;
int opindex;
const char ** strp;
CGEN_FIELDS * fields;
{
const char * errmsg = NULL;
long junk ATTRIBUTE_UNUSED;
switch (opindex)
{
case OPENRISC_OPERAND_ABS_26 :
{
bfd_vma value;
errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_ABS_26, 0, NULL, & value);
fields->f_abs26 = value;
}
break;
case OPENRISC_OPERAND_DISP_26 :
{
bfd_vma value;
errmsg = cgen_parse_address (cd, strp, OPENRISC_OPERAND_DISP_26, 0, NULL, & value);
fields->f_disp26 = value;
}
break;
case OPENRISC_OPERAND_HI16 :
errmsg = parse_hi16 (cd, strp, OPENRISC_OPERAND_HI16, &fields->f_simm16);
break;
case OPENRISC_OPERAND_LO16 :
errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_LO16, &fields->f_lo16);
break;
case OPENRISC_OPERAND_OP_F_23 :
errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_23, &fields->f_op4);
break;
case OPENRISC_OPERAND_OP_F_3 :
errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_OP_F_3, &fields->f_op5);
break;
case OPENRISC_OPERAND_RA :
errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r2);
break;
case OPENRISC_OPERAND_RB :
errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r3);
break;
case OPENRISC_OPERAND_RD :
errmsg = cgen_parse_keyword (cd, strp, & openrisc_cgen_opval_h_gr, & fields->f_r1);
break;
case OPENRISC_OPERAND_SIMM_16 :
errmsg = cgen_parse_signed_integer (cd, strp, OPENRISC_OPERAND_SIMM_16, &fields->f_simm16);
break;
case OPENRISC_OPERAND_UI16NC :
errmsg = parse_lo16 (cd, strp, OPENRISC_OPERAND_UI16NC, &fields->f_i16nc);
break;
case OPENRISC_OPERAND_UIMM_16 :
errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_16, &fields->f_uimm16);
break;
case OPENRISC_OPERAND_UIMM_5 :
errmsg = cgen_parse_unsigned_integer (cd, strp, OPENRISC_OPERAND_UIMM_5, &fields->f_uimm5);
break;
default :
fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
abort ();
}
return errmsg;
}
cgen_parse_fn * const openrisc_cgen_parse_handlers[] =
{
parse_insn_normal,
};
void
openrisc_cgen_init_asm (cd)
CGEN_CPU_DESC cd;
{
openrisc_cgen_init_opcode_table (cd);
openrisc_cgen_init_ibld_table (cd);
cd->parse_handlers = & openrisc_cgen_parse_handlers[0];
cd->parse_operand = openrisc_cgen_parse_operand;
}
char *
openrisc_cgen_build_insn_regex (CGEN_INSN *insn)
{
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));
if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
return _("missing mnemonic in syntax string");
++syn;
for (; *mnem; mnem++)
{
char c = *mnem;
if (ISALPHA (c))
{
*rx++ = '[';
*rx++ = TOLOWER (c);
*rx++ = TOUPPER (c);
*rx++ = ']';
}
else
*rx++ = c;
}
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)
{
case '.': case '[': case '\\':
case '*': case '^': case '$':
#ifdef CGEN_ESCAPE_EXTENDED_REGEX
case '?': case '{': case '}':
case '(': case ')': case '*':
case '|': case '+': case ']':
#endif
*rx++ = '\\';
*rx++ = c;
break;
default:
if (ISALPHA (c))
{
*rx++ = '[';
*rx++ = TOLOWER (c);
*rx++ = TOUPPER (c);
*rx++ = ']';
}
else
*rx++ = c;
break;
}
}
else
{
*rx++ = '.';
*rx++ = '*';
}
}
* rx++ = '[';
* rx++ = ' ';
* rx++ = '\t';
* rx++ = ']';
* rx++ = '*';
* rx++ = '$';
* 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;
}
}
static const char *
parse_insn_normal (CGEN_CPU_DESC cd,
const CGEN_INSN *insn,
const char **strp,
CGEN_FIELDS *fields)
{
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
int past_opcode_p;
#endif
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
syn = CGEN_SYNTAX_STRING (syntax);
if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
abort ();
++syn;
while (* syn != 0)
{
if (CGEN_SYNTAX_CHAR_P (* syn))
{
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)
{
static char msg [80];
sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
CGEN_SYNTAX_CHAR(*syn), *str);
return msg;
}
else
{
static char msg [80];
sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
CGEN_SYNTAX_CHAR(*syn));
return msg;
}
continue;
}
errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
&str, fields);
if (errmsg)
return errmsg;
++ syn;
}
if (* syn == 0)
{
while (ISSPACE (* str))
++ str;
if (* str != '\0')
return _("junk at end of line");
return NULL;
}
return _("unrecognized instruction");
}
const CGEN_INSN *
openrisc_cgen_assemble_insn (CGEN_CPU_DESC cd,
const char *str,
CGEN_FIELDS *fields,
CGEN_INSN_BYTES_PTR buf,
char **errmsg)
{
const char *start;
CGEN_INSN_LIST *ilist;
const char *parse_errmsg = NULL;
const char *insert_errmsg = NULL;
int recognized_mnemonic = 0;
while (ISSPACE (* str))
++ str;
ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
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
if (! openrisc_cgen_insn_supported (cd, insn))
continue;
#endif
if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
continue;
str = start;
if (CGEN_INSN_RX (insn) != NULL &&
regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
continue;
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
if (parse_errmsg != NULL)
continue;
insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
(bfd_vma) 0);
if (insert_errmsg != NULL)
continue;
return insn;
}
{
static char errbuf[150];
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
const char *tmp_errmsg;
tmp_errmsg = (insert_errmsg ? insert_errmsg :
parse_errmsg ? parse_errmsg :
recognized_mnemonic ?
_("unrecognized form of instruction") :
_("unrecognized instruction"));
if (strlen (start) > 50)
sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
else
sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
#else
if (strlen (start) > 50)
sprintf (errbuf, _("bad instruction `%.50s...'"), start);
else
sprintf (errbuf, _("bad instruction `%.50s'"), start);
#endif
*errmsg = errbuf;
return NULL;
}
}
#if 0
void
openrisc_cgen_asm_hash_keywords (CGEN_CPU_DESC cd, CGEN_KEYWORD *opvals)
{
CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
const CGEN_KEYWORD_ENTRY * ke;
while ((ke = cgen_keyword_search_next (& search)) != NULL)
{
#if 0
if (! openrisc_cgen_opval_supported (ke))
continue;
#endif
cgen_asm_record_register (cd, ke->name, ke->value);
}
}
#endif