#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 <regex.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 *);
static const char *
parse_fr (CGEN_CPU_DESC cd,
const char **strp,
int opindex,
unsigned long *valuep)
{
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;
if ((strncmp (*strp, "w", 1) == 0) || (strncmp (*strp, "W", 1) == 0))
{
(*strp)++;
if ((strncmp (*strp, ",", 1) == 0) || ISSPACE (**strp))
{
errmsg = _("W keyword invalid in FR operand slot.");
return errmsg;
}
*strp = old_strp;
}
errmsg = cgen_parse_keyword (cd, strp, & ip2k_cgen_opval_register_names,
(long *) valuep);
if (*strp != NULL
&& errmsg == NULL)
return errmsg;
afteroffset = strstr (*strp, "(IP)");
if (afteroffset == NULL)
afteroffset = strstr (*strp, "(ip)");
if (afteroffset != NULL)
{
if (afteroffset != *strp)
{
errmsg = _("offset(IP) is not a valid form");
return errmsg;
}
else
{
*strp += 4;
*valuep = 0;
errmsg = NULL;
return errmsg;
}
}
afteroffset = strstr (*strp, "(DP)");
if (afteroffset == NULL)
afteroffset = strstr (*strp, "(dp)");
if (afteroffset != NULL)
{
if (afteroffset == *strp)
{
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)
{
*valuep = 0x0100 | tempvalue;
*strp += 4;
return errmsg;
}
else
{
errmsg = _("(DP) offset out of range.");
return errmsg;
}
}
}
afteroffset = strstr (*strp, "(SP)");
if (afteroffset == NULL)
afteroffset = strstr (*strp, "(sp)");
if (afteroffset != NULL)
{
if (afteroffset == *strp)
{
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)
{
*valuep = 0x0180 | tempvalue;
*strp += 4;
return errmsg;
}
else
{
errmsg = _("(SP) offset out of range.");
return errmsg;
}
}
}
*strp = old_strp;
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_IP2K_FR9,
& result_type, & value);
if (errmsg == NULL)
{
*valuep = value;
if (**strp == '(')
errmsg = _("illegal use of parentheses");
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;
}
static const char *
parse_addr16 (CGEN_CPU_DESC cd,
const char **strp,
int opindex,
unsigned long *valuep)
{
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
{
errmsg = _("parse_addr16: invalid opindex.");
return errmsg;
}
errmsg = cgen_parse_address (cd, strp, opindex, code,
& result_type, & value);
if (errmsg == NULL)
{
if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
{
if (code == BFD_RELOC_IP2K_HI8DATA)
value >>= 8;
else
value &= 0x00FF;
}
*valuep = value;
}
return errmsg;
}
static const char *
parse_addr16_cjp (CGEN_CPU_DESC cd,
const char **strp,
int opindex,
unsigned long *valuep)
{
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 (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16CJP)
*valuep = (value >> 1) & 0x1FFF;
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)
{
*valuep = value;
}
else
errmsg = _("cgen_parse_address returned a symbol. Literal required.");
}
return errmsg;
}
static const char *
parse_lit8 (CGEN_CPU_DESC cd,
const char **strp,
int opindex,
long *valuep)
{
const char *errmsg;
enum cgen_parse_operand_result result_type;
bfd_reloc_code_real_type code = BFD_RELOC_NONE;
bfd_vma value;
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;
}
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;
}
else
{
errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
if (errmsg == NULL)
*valuep &= 0xFF;
}
return errmsg;
}
static const char *
parse_bit3 (CGEN_CPU_DESC cd,
const char **strp,
int opindex,
unsigned long *valuep)
{
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;
}
const char * ip2k_cgen_parse_operand
(CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
const char *
ip2k_cgen_parse_operand (CGEN_CPU_DESC cd,
int opindex,
const char ** strp,
CGEN_FIELDS * fields)
{
const char * errmsg = NULL;
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 :
fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
abort ();
}
return errmsg;
}
cgen_parse_fn * const ip2k_cgen_parse_handlers[] =
{
parse_insn_normal,
};
void
ip2k_cgen_init_asm (CGEN_CPU_DESC cd)
{
ip2k_cgen_init_opcode_table (cd);
ip2k_cgen_init_ibld_table (cd);
cd->parse_handlers = & ip2k_cgen_parse_handlers[0];
cd->parse_operand = ip2k_cgen_parse_operand;
}
char *
ip2k_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 *
ip2k_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 (! ip2k_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;
}
}