2002-12-30 20:25:13 +01:00
|
|
|
/* tc-msp430.c -- Assembler code for the Texas Instruments MSP430
|
|
|
|
|
2003-01-28 12:02:40 +01:00
|
|
|
Copyright (C) 2002, 2003 Free Software Foundation, Inc.
|
2002-12-30 20:25:13 +01:00
|
|
|
Contributed by Dmitry Diky <diwil@mail.ru>
|
|
|
|
|
|
|
|
This file is part of GAS, the GNU Assembler.
|
|
|
|
|
|
|
|
GAS is free software; you can redistribute it and/or modify
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
|
|
any later version.
|
|
|
|
|
|
|
|
GAS is distributed in the hope that it will be useful,
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
GNU General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
along with GAS; see the file COPYING. If not, write to
|
|
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <limits.h>
|
|
|
|
|
|
|
|
#define PUSH_1X_WORKAROUND
|
|
|
|
#include "as.h"
|
|
|
|
#include "subsegs.h"
|
|
|
|
#include "opcode/msp430.h"
|
|
|
|
#include "safe-ctype.h"
|
|
|
|
|
|
|
|
const char comment_chars[] = ";";
|
|
|
|
const char line_comment_chars[] = "#";
|
|
|
|
const char line_separator_chars[] = "";
|
|
|
|
const char EXP_CHARS[] = "eE";
|
|
|
|
const char FLT_CHARS[] = "dD";
|
|
|
|
|
|
|
|
/* Handle long expressions. */
|
|
|
|
extern LITTLENUM_TYPE generic_bignum[];
|
|
|
|
|
|
|
|
static struct hash_control *msp430_hash;
|
|
|
|
|
|
|
|
static unsigned int msp430_operands
|
|
|
|
PARAMS ((struct msp430_opcode_s *, char *));
|
|
|
|
static int msp430_srcoperand
|
|
|
|
PARAMS ((struct msp430_operand_s *, char *, int, int *));
|
|
|
|
static int msp430_dstoperand
|
|
|
|
PARAMS ((struct msp430_operand_s *, char *, int));
|
|
|
|
static char *parse_exp
|
|
|
|
PARAMS ((char *, expressionS *));
|
|
|
|
static inline char *skip_space
|
|
|
|
PARAMS ((char *));
|
|
|
|
static int check_reg
|
|
|
|
PARAMS ((char *));
|
|
|
|
static void msp430_set_arch
|
|
|
|
PARAMS ((int));
|
|
|
|
static void show_mcu_list
|
|
|
|
PARAMS ((FILE *));
|
|
|
|
static void del_spaces
|
|
|
|
PARAMS ((char *));
|
|
|
|
|
|
|
|
#define MAX_OP_LEN 64
|
|
|
|
|
|
|
|
struct mcu_type_s
|
|
|
|
{
|
|
|
|
char *name;
|
|
|
|
int isa;
|
|
|
|
int mach;
|
|
|
|
};
|
|
|
|
|
|
|
|
#define MSP430_ISA_11 11
|
2003-08-08 12:14:52 +02:00
|
|
|
#define MSP430_ISA_110 110
|
2002-12-30 20:25:13 +01:00
|
|
|
#define MSP430_ISA_12 12
|
|
|
|
#define MSP430_ISA_13 13
|
|
|
|
#define MSP430_ISA_14 14
|
2003-08-08 12:14:52 +02:00
|
|
|
#define MSP430_ISA_15 15
|
|
|
|
#define MSP430_ISA_16 16
|
2002-12-30 20:25:13 +01:00
|
|
|
#define MSP430_ISA_31 31
|
|
|
|
#define MSP430_ISA_32 32
|
|
|
|
#define MSP430_ISA_33 33
|
2003-08-08 12:14:52 +02:00
|
|
|
#define MSP430_ISA_41 41
|
|
|
|
#define MSP430_ISA_42 42
|
2002-12-30 20:25:13 +01:00
|
|
|
#define MSP430_ISA_43 43
|
|
|
|
#define MSP430_ISA_44 44
|
|
|
|
|
|
|
|
#define CHECK_RELOC_MSP430 ((imm_op || byte_op)?BFD_RELOC_MSP430_16_BYTE:BFD_RELOC_MSP430_16)
|
|
|
|
#define CHECK_RELOC_MSP430_PCREL ((imm_op || byte_op)?BFD_RELOC_MSP430_16_PCREL_BYTE:BFD_RELOC_MSP430_16_PCREL)
|
|
|
|
|
|
|
|
static struct mcu_type_s mcu_types[] =
|
|
|
|
{
|
|
|
|
{"msp1", MSP430_ISA_11, bfd_mach_msp11},
|
|
|
|
{"msp2", MSP430_ISA_14, bfd_mach_msp14},
|
|
|
|
{"msp430x110", MSP430_ISA_11, bfd_mach_msp11},
|
|
|
|
{"msp430x112", MSP430_ISA_11, bfd_mach_msp11},
|
2003-08-08 12:14:52 +02:00
|
|
|
{"msp430x1101",MSP430_ISA_110, bfd_mach_msp110},
|
|
|
|
{"msp430x1111",MSP430_ISA_110, bfd_mach_msp110},
|
|
|
|
{"msp430x1121",MSP430_ISA_110, bfd_mach_msp110},
|
2003-03-04 17:34:40 +01:00
|
|
|
{"msp430x1122",MSP430_ISA_11, bfd_mach_msp110},
|
|
|
|
{"msp430x1132",MSP430_ISA_11, bfd_mach_msp110},
|
2003-08-08 12:14:52 +02:00
|
|
|
|
|
|
|
{"msp430x122", MSP430_ISA_12, bfd_mach_msp12},
|
2002-12-30 20:25:13 +01:00
|
|
|
{"msp430x123", MSP430_ISA_12, bfd_mach_msp12},
|
2003-08-08 12:14:52 +02:00
|
|
|
{"msp430x1222",MSP430_ISA_12, bfd_mach_msp12},
|
2002-12-30 20:25:13 +01:00
|
|
|
{"msp430x1232",MSP430_ISA_12, bfd_mach_msp12},
|
2003-08-08 12:14:52 +02:00
|
|
|
|
2002-12-30 20:25:13 +01:00
|
|
|
{"msp430x133", MSP430_ISA_13, bfd_mach_msp13},
|
|
|
|
{"msp430x135", MSP430_ISA_13, bfd_mach_msp13},
|
2003-08-08 12:14:52 +02:00
|
|
|
{"msp430x1331",MSP430_ISA_13, bfd_mach_msp13},
|
|
|
|
{"msp430x1351",MSP430_ISA_13, bfd_mach_msp13},
|
2002-12-30 20:25:13 +01:00
|
|
|
{"msp430x147", MSP430_ISA_14, bfd_mach_msp14},
|
|
|
|
{"msp430x148", MSP430_ISA_14, bfd_mach_msp14},
|
|
|
|
{"msp430x149", MSP430_ISA_14, bfd_mach_msp14},
|
2003-08-08 12:14:52 +02:00
|
|
|
|
|
|
|
{"msp430x155", MSP430_ISA_15, bfd_mach_msp15},
|
|
|
|
{"msp430x156", MSP430_ISA_15, bfd_mach_msp15},
|
|
|
|
{"msp430x157", MSP430_ISA_15, bfd_mach_msp15},
|
|
|
|
{"msp430x167", MSP430_ISA_16, bfd_mach_msp16},
|
|
|
|
{"msp430x168", MSP430_ISA_16, bfd_mach_msp16},
|
|
|
|
{"msp430x169", MSP430_ISA_16, bfd_mach_msp16},
|
|
|
|
|
2002-12-30 20:25:13 +01:00
|
|
|
{"msp430x311", MSP430_ISA_31, bfd_mach_msp31},
|
|
|
|
{"msp430x312", MSP430_ISA_31, bfd_mach_msp31},
|
|
|
|
{"msp430x313", MSP430_ISA_31, bfd_mach_msp31},
|
|
|
|
{"msp430x314", MSP430_ISA_31, bfd_mach_msp31},
|
|
|
|
{"msp430x315", MSP430_ISA_31, bfd_mach_msp31},
|
|
|
|
{"msp430x323", MSP430_ISA_32, bfd_mach_msp32},
|
|
|
|
{"msp430x325", MSP430_ISA_32, bfd_mach_msp32},
|
|
|
|
{"msp430x336", MSP430_ISA_33, bfd_mach_msp33},
|
|
|
|
{"msp430x337", MSP430_ISA_33, bfd_mach_msp33},
|
2003-08-08 12:14:52 +02:00
|
|
|
|
|
|
|
{"msp430x412", MSP430_ISA_41, bfd_mach_msp41},
|
|
|
|
{"msp430x413", MSP430_ISA_41, bfd_mach_msp41},
|
|
|
|
|
|
|
|
{"msp430xE423", MSP430_ISA_42, bfd_mach_msp42},
|
|
|
|
{"msp430xE425", MSP430_ISA_42, bfd_mach_msp42},
|
|
|
|
{"msp430xE427", MSP430_ISA_42, bfd_mach_msp42},
|
|
|
|
{"msp430xW423", MSP430_ISA_42, bfd_mach_msp42},
|
|
|
|
{"msp430xW425", MSP430_ISA_42, bfd_mach_msp42},
|
|
|
|
{"msp430xW427", MSP430_ISA_42, bfd_mach_msp42},
|
|
|
|
|
2002-12-30 20:25:13 +01:00
|
|
|
{"msp430x435", MSP430_ISA_43, bfd_mach_msp43},
|
|
|
|
{"msp430x436", MSP430_ISA_43, bfd_mach_msp43},
|
2003-03-04 17:34:40 +01:00
|
|
|
{"msp430x437", MSP430_ISA_43, bfd_mach_msp43},
|
2002-12-30 20:25:13 +01:00
|
|
|
{"msp430x447", MSP430_ISA_44, bfd_mach_msp44},
|
|
|
|
{"msp430x448", MSP430_ISA_44, bfd_mach_msp44},
|
|
|
|
{"msp430x449", MSP430_ISA_44, bfd_mach_msp44},
|
|
|
|
|
|
|
|
{NULL, 0, 0}
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static struct mcu_type_s default_mcu =
|
|
|
|
{ "msp430x11", MSP430_ISA_11, bfd_mach_msp11 };
|
|
|
|
|
|
|
|
static struct mcu_type_s *msp430_mcu = &default_mcu;
|
|
|
|
|
|
|
|
const pseudo_typeS md_pseudo_table[] =
|
|
|
|
{
|
|
|
|
{"arch", msp430_set_arch, 0},
|
|
|
|
{NULL, NULL, 0}
|
|
|
|
};
|
|
|
|
|
|
|
|
#define OPTION_MMCU 'm'
|
|
|
|
|
|
|
|
const char *md_shortopts = "m:";
|
|
|
|
|
|
|
|
struct option md_longopts[] =
|
|
|
|
{
|
|
|
|
{"mmcu", required_argument, NULL, OPTION_MMCU},
|
|
|
|
{NULL, no_argument, NULL, 0}
|
|
|
|
};
|
|
|
|
|
|
|
|
size_t md_longopts_size = sizeof (md_longopts);
|
|
|
|
|
|
|
|
static void
|
|
|
|
show_mcu_list (stream)
|
|
|
|
FILE *stream;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
fprintf (stream, _("Known MCU names:\n"));
|
|
|
|
|
|
|
|
for (i = 0; mcu_types[i].name; i++)
|
|
|
|
fprintf (stream, _("\t %s\n"), mcu_types[i].name);
|
|
|
|
|
|
|
|
fprintf (stream, "\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_show_usage (stream)
|
|
|
|
FILE *stream;
|
|
|
|
{
|
|
|
|
fprintf (stream,
|
|
|
|
_("MSP430 options:\n"
|
|
|
|
" -mmcu=[msp430-name] select microcontroller type\n"
|
2003-03-04 17:34:40 +01:00
|
|
|
" msp430x110 msp430x112\n"
|
|
|
|
" msp430x1101 msp430x1111\n"
|
|
|
|
" msp430x1121 msp430x1122 msp430x1132\n"
|
|
|
|
" msp430x122 msp430x123\n"
|
2003-05-07 10:58:33 +02:00
|
|
|
" msp430x1222 msp430x1232\n"
|
|
|
|
" msp430x133 msp430x135\n"
|
2003-03-04 17:34:40 +01:00
|
|
|
" msp430x1331 msp430x1351\n"
|
|
|
|
" msp430x147 msp430x148 msp430x149\n"
|
|
|
|
" msp430x155 msp430x156 msp430x157\n"
|
|
|
|
" msp430x167 msp430x168 msp430x169\n"
|
|
|
|
" msp430x311 msp430x312 msp430x313 msp430x314 msp430x315\n"
|
|
|
|
" msp430x323 msp430x325\n"
|
|
|
|
" msp430x336 msp430x337\n"
|
|
|
|
" msp430x412 msp430x413\n"
|
2003-08-08 12:14:52 +02:00
|
|
|
" msp430xE423 msp430xE425 msp430E427\n"
|
|
|
|
" msp430xW423 msp430xW425 msp430W427\n"
|
2003-03-04 17:34:40 +01:00
|
|
|
" msp430x435 msp430x436 msp430x437\n"
|
|
|
|
" msp430x447 msp430x448 msp430x449\n"));
|
2002-12-30 20:25:13 +01:00
|
|
|
|
|
|
|
show_mcu_list (stream);
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *
|
|
|
|
extract_word (char *from, char *to, int limit)
|
|
|
|
{
|
|
|
|
char *op_start;
|
|
|
|
char *op_end;
|
|
|
|
int size = 0;
|
|
|
|
|
|
|
|
/* Drop leading whitespace. */
|
|
|
|
from = skip_space (from);
|
|
|
|
*to = 0;
|
|
|
|
|
|
|
|
/* Find the op code end. */
|
|
|
|
for (op_start = op_end = from; *op_end != 0 && is_part_of_name (*op_end);)
|
|
|
|
{
|
|
|
|
to[size++] = *op_end++;
|
|
|
|
if (size + 1 >= limit)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
to[size] = 0;
|
|
|
|
return op_end;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
msp430_set_arch (dummy)
|
|
|
|
int dummy ATTRIBUTE_UNUSED;
|
|
|
|
{
|
|
|
|
char *str = (char *) alloca (32); /* 32 for good measure. */
|
|
|
|
|
|
|
|
input_line_pointer = extract_word (input_line_pointer, str, 32);
|
|
|
|
|
|
|
|
md_parse_option (OPTION_MMCU, str);
|
|
|
|
bfd_set_arch_mach (stdoutput, TARGET_ARCH, msp430_mcu->mach);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
md_parse_option (c, arg)
|
|
|
|
int c;
|
|
|
|
char *arg;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
switch (c)
|
|
|
|
{
|
|
|
|
case OPTION_MMCU:
|
|
|
|
for (i = 0; mcu_types[i].name; ++i)
|
|
|
|
if (strcmp (mcu_types[i].name, arg) == 0)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (!mcu_types[i].name)
|
|
|
|
{
|
|
|
|
show_mcu_list (stderr);
|
|
|
|
as_fatal (_("unknown MCU: %s\n"), arg);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (msp430_mcu == &default_mcu || msp430_mcu->mach == mcu_types[i].mach)
|
|
|
|
msp430_mcu = &mcu_types[i];
|
|
|
|
else
|
|
|
|
as_fatal (_("redefinition of mcu type %s' to %s'"),
|
|
|
|
msp430_mcu->name, mcu_types[i].name);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
symbolS *
|
|
|
|
md_undefined_symbol (name)
|
|
|
|
char *name ATTRIBUTE_UNUSED;
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline char *
|
|
|
|
skip_space (s)
|
|
|
|
char *s;
|
|
|
|
{
|
|
|
|
while (ISSPACE (*s))
|
|
|
|
++s;
|
|
|
|
return s;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Delete spaces from s: X ( r 1 2) => X(r12). */
|
|
|
|
|
|
|
|
static void
|
|
|
|
del_spaces (s)
|
|
|
|
char *s;
|
|
|
|
{
|
|
|
|
while (*s)
|
|
|
|
{
|
|
|
|
if (ISSPACE (*s))
|
|
|
|
{
|
|
|
|
char *m = s + 1;
|
|
|
|
|
|
|
|
while (ISSPACE (*m) && *m)
|
|
|
|
m++;
|
|
|
|
memmove (s, m, strlen (m) + 1);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Extract one word from FROM and copy it to TO. Delimeters are ",;\n" */
|
|
|
|
|
|
|
|
static char *
|
|
|
|
extract_operand (char *from, char *to, int limit)
|
|
|
|
{
|
|
|
|
int size = 0;
|
|
|
|
|
|
|
|
/* Drop leading whitespace. */
|
|
|
|
from = skip_space (from);
|
|
|
|
|
|
|
|
while (size < limit && *from)
|
|
|
|
{
|
|
|
|
*(to + size) = *from;
|
|
|
|
if (*from == ',' || *from == ';' || *from == '\n')
|
|
|
|
break;
|
|
|
|
from++;
|
|
|
|
size++;
|
|
|
|
}
|
|
|
|
|
|
|
|
*(to + size) = 0;
|
|
|
|
del_spaces (to);
|
|
|
|
|
|
|
|
from++;
|
|
|
|
|
|
|
|
return from;
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *
|
|
|
|
extract_cmd (char *from, char *to, int limit)
|
|
|
|
{
|
|
|
|
int size = 0;
|
|
|
|
|
|
|
|
while (*from && ! ISSPACE (*from) && *from != '.' && limit > size)
|
|
|
|
{
|
|
|
|
*(to + size) = *from;
|
|
|
|
from++;
|
|
|
|
size++;
|
|
|
|
}
|
|
|
|
|
|
|
|
*(to + size) = 0;
|
|
|
|
|
|
|
|
return from;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Turn a string in input_line_pointer into a floating point constant
|
|
|
|
of type TYPE, and store the appropriate bytes in *LITP. The number
|
|
|
|
of LITTLENUMS emitted is stored in *SIZEP. An error message is
|
|
|
|
returned, or NULL on OK. */
|
|
|
|
|
|
|
|
char *
|
|
|
|
md_atof (type, litP, sizeP)
|
|
|
|
int type;
|
|
|
|
char *litP;
|
|
|
|
int *sizeP;
|
|
|
|
{
|
|
|
|
int prec;
|
|
|
|
LITTLENUM_TYPE words[4];
|
|
|
|
LITTLENUM_TYPE *wordP;
|
|
|
|
char *t;
|
|
|
|
|
|
|
|
switch (type)
|
|
|
|
{
|
|
|
|
case 'f':
|
|
|
|
prec = 2;
|
|
|
|
break;
|
|
|
|
case 'd':
|
|
|
|
prec = 4;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
*sizeP = 0;
|
|
|
|
return _("bad call to md_atof");
|
|
|
|
}
|
|
|
|
|
|
|
|
t = atof_ieee (input_line_pointer, type, words);
|
|
|
|
if (t)
|
|
|
|
input_line_pointer = t;
|
|
|
|
|
|
|
|
*sizeP = prec * sizeof (LITTLENUM_TYPE);
|
|
|
|
|
|
|
|
/* This loop outputs the LITTLENUMs in REVERSE order. */
|
|
|
|
for (wordP = words + prec - 1; prec--;)
|
|
|
|
{
|
|
|
|
md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE));
|
|
|
|
litP += sizeof (LITTLENUM_TYPE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_convert_frag (abfd, sec, fragP)
|
|
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
|
|
asection *sec ATTRIBUTE_UNUSED;
|
|
|
|
fragS *fragP ATTRIBUTE_UNUSED;
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_begin ()
|
|
|
|
{
|
|
|
|
struct msp430_opcode_s *opcode;
|
|
|
|
msp430_hash = hash_new ();
|
|
|
|
|
|
|
|
for (opcode = msp430_opcodes; opcode->name; opcode++)
|
|
|
|
hash_insert (msp430_hash, opcode->name, (char *) opcode);
|
|
|
|
|
|
|
|
bfd_set_arch_mach (stdoutput, TARGET_ARCH, msp430_mcu->mach);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_assemble (str)
|
|
|
|
char *str;
|
|
|
|
{
|
|
|
|
struct msp430_opcode_s *opcode;
|
|
|
|
char cmd[32];
|
|
|
|
unsigned int i = 0;
|
|
|
|
|
|
|
|
str = skip_space (str); /* Skip leading spaces. */
|
|
|
|
str = extract_cmd (str, cmd, sizeof (cmd));
|
|
|
|
|
|
|
|
while (cmd[i] && i < sizeof (cmd))
|
|
|
|
{
|
2003-01-28 12:02:40 +01:00
|
|
|
char a = TOLOWER (cmd[i]);
|
2002-12-30 20:25:13 +01:00
|
|
|
cmd[i] = a;
|
|
|
|
i++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!cmd[0])
|
|
|
|
{
|
|
|
|
as_bad (_("can't find opcode "));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
opcode = (struct msp430_opcode_s *) hash_find (msp430_hash, cmd);
|
|
|
|
|
|
|
|
if (opcode == NULL)
|
|
|
|
{
|
|
|
|
as_bad (_("unknown opcode `%s'"), cmd);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
{
|
|
|
|
char *__t = input_line_pointer;
|
|
|
|
msp430_operands (opcode, str);
|
|
|
|
input_line_pointer = __t;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Parse instruction operands.
|
|
|
|
Return binary opcode. */
|
|
|
|
|
|
|
|
static unsigned int
|
|
|
|
msp430_operands (opcode, line)
|
|
|
|
struct msp430_opcode_s *opcode;
|
|
|
|
char *line;
|
|
|
|
{
|
|
|
|
int bin = opcode->bin_opcode; /* opcode mask. */
|
|
|
|
int __is;
|
|
|
|
char l1[MAX_OP_LEN], l2[MAX_OP_LEN];
|
|
|
|
char *frag;
|
|
|
|
int where;
|
|
|
|
struct msp430_operand_s op1, op2;
|
|
|
|
int res = 0;
|
|
|
|
static short ZEROS = 0;
|
|
|
|
int byte_op, imm_op;
|
|
|
|
|
|
|
|
/* opcode is the one from opcodes table
|
|
|
|
line contains something like
|
|
|
|
[.w] @r2+, 5(R1)
|
|
|
|
or
|
|
|
|
.b @r2+, 5(R1). */
|
|
|
|
|
|
|
|
/* Check if byte or word operation. */
|
2003-01-28 12:02:40 +01:00
|
|
|
if (*line == '.' && TOLOWER (*(line + 1)) == 'b')
|
2002-12-30 20:25:13 +01:00
|
|
|
{
|
|
|
|
bin |= BYTE_OPERATION;
|
|
|
|
byte_op = 1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
byte_op = 0;
|
|
|
|
|
|
|
|
/* skip .[bwBW]. */
|
|
|
|
while (! ISSPACE (*line) && *line)
|
|
|
|
line++;
|
|
|
|
|
|
|
|
if (opcode->insn_opnumb && (!*line || *line == '\n'))
|
|
|
|
{
|
|
|
|
as_bad (_("instruction %s requires %d operand(s)"),
|
|
|
|
opcode->name, opcode->insn_opnumb);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset (l1, 0, sizeof (l1));
|
|
|
|
memset (l2, 0, sizeof (l2));
|
|
|
|
memset (&op1, 0, sizeof (op1));
|
|
|
|
memset (&op2, 0, sizeof (op2));
|
|
|
|
|
|
|
|
imm_op = 0;
|
|
|
|
|
|
|
|
switch (opcode->fmt)
|
|
|
|
{
|
|
|
|
case 0: /* Emulated. */
|
|
|
|
switch (opcode->insn_opnumb)
|
|
|
|
{
|
|
|
|
case 0:
|
|
|
|
/* Set/clear bits instructions. */
|
|
|
|
__is = 2;
|
|
|
|
frag = frag_more (__is);
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
/* Something which works with destination operand. */
|
|
|
|
line = extract_operand (line, l1, sizeof (l1));
|
|
|
|
res = msp430_dstoperand (&op1, l1, opcode->bin_opcode);
|
|
|
|
if (res)
|
|
|
|
break;
|
|
|
|
|
|
|
|
bin |= (op1.reg | (op1.am << 7));
|
|
|
|
__is = 1 + op1.ol;
|
|
|
|
frag = frag_more (2 * __is);
|
|
|
|
where = frag - frag_now->fr_literal;
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
|
|
|
|
if (op1.mode == OP_EXP)
|
|
|
|
{
|
|
|
|
where += 2;
|
|
|
|
bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
|
|
|
|
|
|
|
|
if (op1.reg)
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), FALSE, CHECK_RELOC_MSP430);
|
|
|
|
else
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 2:
|
|
|
|
{
|
|
|
|
char l2[16];
|
|
|
|
|
|
|
|
/* Shift instruction. */
|
|
|
|
line = extract_operand (line, l1, sizeof (l1));
|
|
|
|
strncpy (l2, l1, 16);
|
|
|
|
res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
|
|
|
|
res += msp430_dstoperand (&op2, l2, opcode->bin_opcode);
|
|
|
|
|
|
|
|
if (res)
|
|
|
|
break; /* An error occured. All warnings were done before. */
|
|
|
|
|
|
|
|
bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
|
|
|
|
|
|
|
|
__is = 1 + op1.ol + op2.ol; /* insn size in words. */
|
|
|
|
frag = frag_more (2 * __is);
|
|
|
|
where = frag - frag_now->fr_literal;
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
|
|
|
|
if (op1.mode == OP_EXP)
|
|
|
|
{
|
|
|
|
where += 2; /* Advance 'where' as we do not know _where_. */
|
|
|
|
bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
|
|
|
|
|
|
|
|
if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), FALSE, CHECK_RELOC_MSP430);
|
|
|
|
else
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op2.mode == OP_EXP)
|
|
|
|
{
|
|
|
|
imm_op = 0;
|
|
|
|
bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0));
|
|
|
|
|
|
|
|
if (op2.reg) /* Not PC relative. */
|
|
|
|
fix_new_exp (frag_now, where + 2, 2,
|
|
|
|
&(op2.exp), FALSE, CHECK_RELOC_MSP430);
|
|
|
|
else
|
|
|
|
fix_new_exp (frag_now, where + 2, 2,
|
|
|
|
&(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case 3:
|
|
|
|
/* Branch instruction => mov dst, r0. */
|
|
|
|
line = extract_operand (line, l1, sizeof (l1));
|
|
|
|
|
|
|
|
res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
|
|
|
|
if (res)
|
|
|
|
break;
|
|
|
|
|
|
|
|
byte_op = 0;
|
|
|
|
imm_op = 0;
|
|
|
|
|
|
|
|
bin |= ((op1.reg << 8) | (op1.am << 4));
|
|
|
|
__is = 1 + op1.ol;
|
|
|
|
frag = frag_more (2 * __is);
|
|
|
|
where = frag - frag_now->fr_literal;
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
|
|
|
|
if (op1.mode == OP_EXP)
|
|
|
|
{
|
|
|
|
where += 2;
|
|
|
|
bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
|
|
|
|
|
|
|
|
if (op1.reg || (op1.reg == 0 && op1.am == 3))
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), FALSE, CHECK_RELOC_MSP430);
|
|
|
|
else
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 1: /* Format 1, double operand. */
|
|
|
|
line = extract_operand (line, l1, sizeof (l1));
|
|
|
|
line = extract_operand (line, l2, sizeof (l2));
|
|
|
|
res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
|
|
|
|
res += msp430_dstoperand (&op2, l2, opcode->bin_opcode);
|
|
|
|
|
|
|
|
if (res)
|
|
|
|
break; /* Error occured. All warnings were done before. */
|
|
|
|
|
|
|
|
bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
|
|
|
|
|
|
|
|
__is = 1 + op1.ol + op2.ol; /* insn size in words. */
|
|
|
|
frag = frag_more (2 * __is);
|
|
|
|
where = frag - frag_now->fr_literal;
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
|
|
|
|
if (op1.mode == OP_EXP)
|
|
|
|
{
|
|
|
|
where += 2; /* Advance where as we do not know _where_. */
|
|
|
|
bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
|
|
|
|
|
|
|
|
if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), FALSE, CHECK_RELOC_MSP430);
|
|
|
|
else
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op2.mode == OP_EXP)
|
|
|
|
{
|
|
|
|
imm_op = 0;
|
|
|
|
bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0));
|
|
|
|
|
|
|
|
if (op2.reg) /* Not PC relative. */
|
|
|
|
fix_new_exp (frag_now, where + 2, 2,
|
|
|
|
&(op2.exp), FALSE, CHECK_RELOC_MSP430);
|
|
|
|
else
|
|
|
|
fix_new_exp (frag_now, where + 2, 2,
|
|
|
|
&(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 2: /* Single-operand mostly instr. */
|
|
|
|
if (opcode->insn_opnumb == 0)
|
|
|
|
{
|
|
|
|
/* reti instruction. */
|
|
|
|
frag = frag_more (2);
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
line = extract_operand (line, l1, sizeof (l1));
|
|
|
|
res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
|
|
|
|
if (res)
|
|
|
|
break; /* Error in operand. */
|
|
|
|
|
|
|
|
bin |= op1.reg | (op1.am << 4);
|
|
|
|
__is = 1 + op1.ol;
|
|
|
|
frag = frag_more (2 * __is);
|
|
|
|
where = frag - frag_now->fr_literal;
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
|
|
|
|
if (op1.mode == OP_EXP)
|
|
|
|
{
|
|
|
|
bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
|
|
|
|
|
|
|
|
if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */
|
|
|
|
fix_new_exp (frag_now, where + 2, 2,
|
|
|
|
&(op1.exp), FALSE, CHECK_RELOC_MSP430);
|
|
|
|
else
|
|
|
|
fix_new_exp (frag_now, where + 2, 2,
|
|
|
|
&(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 3: /* Conditional jumps instructions. */
|
|
|
|
line = extract_operand (line, l1, sizeof (l1));
|
|
|
|
/* l1 is a label. */
|
|
|
|
if (l1[0])
|
|
|
|
{
|
|
|
|
char *m = l1;
|
|
|
|
expressionS exp;
|
|
|
|
|
|
|
|
if (*m == '$')
|
|
|
|
m++;
|
|
|
|
|
|
|
|
parse_exp (m, &exp);
|
|
|
|
frag = frag_more (2); /* Instr size is 1 word. */
|
|
|
|
|
|
|
|
/* In order to handle something like:
|
|
|
|
|
|
|
|
and #0x8000, r5
|
|
|
|
tst r5
|
|
|
|
jz 4 ; skip next 4 bytes
|
|
|
|
inv r5
|
|
|
|
inc r5
|
|
|
|
nop ; will jump here if r5 positive or zero
|
|
|
|
|
|
|
|
jCOND -n ;assumes jump n bytes backward:
|
|
|
|
|
|
|
|
mov r5,r6
|
|
|
|
jmp -2
|
|
|
|
|
|
|
|
is equial to:
|
|
|
|
lab:
|
|
|
|
mov r5,r6
|
|
|
|
jmp lab
|
|
|
|
|
|
|
|
jCOND $n ; jump from PC in either direction. */
|
|
|
|
|
|
|
|
if (exp.X_op == O_constant)
|
|
|
|
{
|
|
|
|
int x = exp.X_add_number;
|
|
|
|
|
|
|
|
if (x & 1)
|
|
|
|
{
|
|
|
|
as_warn (_("Even number required. Rounded to %d"), x + 1);
|
|
|
|
x++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((*l1 == '$' && x > 0) || x < 0)
|
|
|
|
x -= 2;
|
|
|
|
|
|
|
|
x >>= 1;
|
|
|
|
|
|
|
|
if (x > 512 || x < -511)
|
|
|
|
{
|
|
|
|
as_bad (_("Wrong displacement %d"), x << 1);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
bin |= x & 0x3ff;
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
}
|
|
|
|
else if (exp.X_op == O_symbol && *l1 != '$')
|
|
|
|
{
|
|
|
|
where = frag - frag_now->fr_literal;
|
|
|
|
fix_new_exp (frag_now, where, 2,
|
|
|
|
&exp, TRUE, BFD_RELOC_MSP430_10_PCREL);
|
|
|
|
|
|
|
|
bfd_putl16 ((bfd_vma) bin, frag);
|
|
|
|
}
|
|
|
|
else if (*l1 == '$')
|
|
|
|
{
|
|
|
|
as_bad (_("instruction requires label sans '$'"));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_bad (_
|
|
|
|
("instruction requires label or value in range -511:512"));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_bad (_("instruction requires label"));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
as_bad (_("Ilegal instruction or not implmented opcode."));
|
|
|
|
}
|
|
|
|
|
|
|
|
input_line_pointer = line;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
msp430_dstoperand (op, l, bin)
|
|
|
|
struct msp430_operand_s *op;
|
|
|
|
char *l;
|
|
|
|
int bin;
|
|
|
|
{
|
|
|
|
int dummy;
|
|
|
|
int ret = msp430_srcoperand (op, l, bin, &dummy);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
if (op->am == 2)
|
|
|
|
{
|
|
|
|
char *__tl = "0";
|
|
|
|
|
|
|
|
op->mode = OP_EXP;
|
|
|
|
op->am = 1;
|
|
|
|
op->ol = 1;
|
|
|
|
parse_exp (__tl, &(op->exp));
|
|
|
|
if (op->exp.X_op != O_constant || op->exp.X_add_number != 0)
|
|
|
|
{
|
|
|
|
as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"),
|
|
|
|
op->reg, op->reg);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op->am > 1)
|
|
|
|
{
|
|
|
|
as_bad (_
|
|
|
|
("this addressing mode is not applicable for destination operand"));
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
check_reg (t)
|
|
|
|
char *t;
|
|
|
|
{
|
|
|
|
/* If this is a reg numb, str 't' must be a number from 0 - 15. */
|
|
|
|
|
|
|
|
if (strlen (t) > 2 && *(t + 2) != '+')
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
while (*t)
|
|
|
|
{
|
|
|
|
if ((*t < '0' || *t > '9') && *t != '+')
|
|
|
|
break;
|
|
|
|
t++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (*t)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
msp430_srcoperand (op, l, bin, imm_op)
|
|
|
|
struct msp430_operand_s *op;
|
|
|
|
char *l;
|
|
|
|
int bin;
|
|
|
|
int *imm_op;
|
|
|
|
{
|
|
|
|
char *__tl = l;
|
|
|
|
|
|
|
|
/* Check if an immediate #VALUE. The hash sign should be only at the beginning! */
|
|
|
|
if (*l == '#')
|
|
|
|
{
|
|
|
|
char *h = l;
|
|
|
|
int vshift = -1;
|
|
|
|
int rval = 0;
|
|
|
|
|
|
|
|
/* Check if there is:
|
|
|
|
llo(x) - least significant 16 bits, x &= 0xffff
|
|
|
|
lhi(x) - x = (x >> 16) & 0xffff,
|
|
|
|
hlo(x) - x = (x >> 32) & 0xffff,
|
|
|
|
hhi(x) - x = (x >> 48) & 0xffff
|
|
|
|
The value _MUST_ be constant expression: #hlo(1231231231). */
|
|
|
|
|
|
|
|
*imm_op = 1;
|
|
|
|
|
|
|
|
if (strncasecmp (h, "#llo(", 5) == 0)
|
|
|
|
{
|
|
|
|
vshift = 0;
|
|
|
|
rval = 3;
|
|
|
|
}
|
|
|
|
else if (strncasecmp (h, "#lhi(", 5) == 0)
|
|
|
|
{
|
|
|
|
vshift = 1;
|
|
|
|
rval = 3;
|
|
|
|
}
|
|
|
|
else if (strncasecmp (h, "#hlo(", 5) == 0)
|
|
|
|
{
|
|
|
|
vshift = 2;
|
|
|
|
rval = 3;
|
|
|
|
}
|
|
|
|
else if (strncasecmp (h, "#hhi(", 5) == 0)
|
|
|
|
{
|
|
|
|
vshift = 3;
|
|
|
|
rval = 3;
|
|
|
|
}
|
|
|
|
else if (strncasecmp (h, "#lo(", 4) == 0)
|
|
|
|
{
|
|
|
|
vshift = 0;
|
|
|
|
rval = 2;
|
|
|
|
}
|
|
|
|
else if (strncasecmp (h, "#hi(", 4) == 0)
|
|
|
|
{
|
|
|
|
vshift = 1;
|
|
|
|
rval = 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
op->reg = 0; /* Reg PC. */
|
|
|
|
op->am = 3;
|
|
|
|
op->ol = 1; /* Immediate will follow an instruction. */
|
|
|
|
__tl = h + 1 + rval;
|
|
|
|
op->mode = OP_EXP;
|
|
|
|
parse_exp (__tl, &(op->exp));
|
|
|
|
if (op->exp.X_op == O_constant)
|
|
|
|
{
|
|
|
|
int x = op->exp.X_add_number;
|
|
|
|
|
|
|
|
if (vshift == 0)
|
|
|
|
{
|
|
|
|
x = x & 0xffff;
|
|
|
|
op->exp.X_add_number = x;
|
|
|
|
}
|
|
|
|
else if (vshift == 1)
|
|
|
|
{
|
|
|
|
x = (x >> 16) & 0xffff;
|
|
|
|
op->exp.X_add_number = x;
|
|
|
|
}
|
|
|
|
else if (vshift > 1)
|
|
|
|
{
|
|
|
|
if (x < 0)
|
|
|
|
op->exp.X_add_number = -1;
|
|
|
|
else
|
|
|
|
op->exp.X_add_number = 0; /* Nothing left. */
|
|
|
|
x = op->exp.X_add_number;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768)
|
|
|
|
{
|
|
|
|
as_bad (_("value %ld out of range. Use #lo() or #hi()"), x);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now check constants. */
|
|
|
|
/* Substitude register mode with a constant generator if applicable. */
|
|
|
|
|
|
|
|
x = (short) x; /* Extend sign. */
|
|
|
|
|
|
|
|
if (x == 0)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 0;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == 1)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 1;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == 2)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 2;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == -1)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 3;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == 4)
|
|
|
|
{
|
|
|
|
#ifdef PUSH_1X_WORKAROUND
|
2003-08-01 05:48:55 +02:00
|
|
|
if (bin == 0x1200)
|
2002-12-30 20:25:13 +01:00
|
|
|
{
|
|
|
|
/* Remove warning as confusing.
|
|
|
|
as_warn(_("Hardware push bug workaround")); */
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
op->reg = 2;
|
|
|
|
op->am = 2;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (x == 8)
|
|
|
|
{
|
|
|
|
#ifdef PUSH_1X_WORKAROUND
|
2003-08-01 05:48:55 +02:00
|
|
|
if (bin == 0x1200)
|
2002-12-30 20:25:13 +01:00
|
|
|
{
|
|
|
|
/* Remove warning as confusing.
|
|
|
|
as_warn(_("Hardware push bug workaround")); */
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
op->reg = 2;
|
|
|
|
op->am = 3;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (op->exp.X_op == O_symbol)
|
|
|
|
{
|
|
|
|
op->mode = OP_EXP;
|
|
|
|
}
|
|
|
|
else if (op->exp.X_op == O_big)
|
|
|
|
{
|
|
|
|
short x;
|
|
|
|
if (vshift != -1)
|
|
|
|
{
|
|
|
|
op->exp.X_op = O_constant;
|
|
|
|
op->exp.X_add_number = 0xffff & generic_bignum[vshift];
|
|
|
|
x = op->exp.X_add_number;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_bad (_
|
|
|
|
("unknown expression in operand %s. use #llo() #lhi() #hlo() #hhi() "),
|
|
|
|
l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (x == 0)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 0;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == 1)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 1;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == 2)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 2;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == -1)
|
|
|
|
{
|
|
|
|
op->reg = 3;
|
|
|
|
op->am = 3;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == 4)
|
|
|
|
{
|
|
|
|
op->reg = 2;
|
|
|
|
op->am = 2;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
else if (x == 8)
|
|
|
|
{
|
|
|
|
op->reg = 2;
|
|
|
|
op->am = 3;
|
|
|
|
op->ol = 0;
|
|
|
|
op->mode = OP_REG;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_bad (_("unknown operand %s"), l);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */
|
|
|
|
if (*l == '&')
|
|
|
|
{
|
|
|
|
char *h = l;
|
|
|
|
|
|
|
|
op->reg = 2; /* reg 2 in absolute addr mode. */
|
|
|
|
op->am = 1; /* mode As == 01 bin. */
|
|
|
|
op->ol = 1; /* Immediate value followed by instruction. */
|
|
|
|
__tl = h + 1;
|
|
|
|
parse_exp (__tl, &(op->exp));
|
|
|
|
op->mode = OP_EXP;
|
|
|
|
if (op->exp.X_op == O_constant)
|
|
|
|
{
|
|
|
|
int x = op->exp.X_add_number;
|
|
|
|
if (x > 65535 || x < -32768)
|
|
|
|
{
|
|
|
|
as_bad (_("value out of range: %d"), x);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (op->exp.X_op == O_symbol)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_bad (_("unknown expression in operand %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check if inderect register mode @Rn / postincrement @Rn+. */
|
|
|
|
if (*l == '@')
|
|
|
|
{
|
|
|
|
char *t = l;
|
|
|
|
char *m = strchr (l, '+');
|
|
|
|
|
|
|
|
if (t != l)
|
|
|
|
{
|
|
|
|
as_bad (_("unknown addressing mode %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
t++;
|
|
|
|
if (*t != 'r' && *t != 'R')
|
|
|
|
{
|
|
|
|
as_bad (_("unknown addressing mode %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
t++; /* Points to the reg value. */
|
|
|
|
|
|
|
|
if (check_reg (t))
|
|
|
|
{
|
|
|
|
as_bad (_("Bad register name r%s"), t);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
op->mode = OP_REG;
|
|
|
|
op->am = m ? 3 : 2;
|
|
|
|
op->ol = 0;
|
|
|
|
if (m)
|
|
|
|
*m = 0; /* strip '+' */
|
|
|
|
op->reg = atoi (t);
|
|
|
|
if (op->reg < 0 || op->reg > 15)
|
|
|
|
{
|
|
|
|
as_bad (_("MSP430 does not have %d registers"), op->reg);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check if register indexed X(Rn). */
|
|
|
|
do
|
|
|
|
{
|
|
|
|
char *h = strrchr (l, '(');
|
|
|
|
char *m = strrchr (l, ')');
|
|
|
|
char *t;
|
|
|
|
|
|
|
|
*imm_op = 1;
|
|
|
|
|
|
|
|
if (!h)
|
|
|
|
break;
|
|
|
|
if (!m)
|
|
|
|
{
|
|
|
|
as_bad (_("')' required"));
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
t = h;
|
|
|
|
op->am = 1;
|
|
|
|
op->ol = 1;
|
|
|
|
/* Extract a register. */
|
|
|
|
t++; /* Advance pointer. */
|
|
|
|
|
|
|
|
if (*t != 'r' && *t != 'R')
|
|
|
|
{
|
|
|
|
as_bad (_
|
|
|
|
("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"),
|
|
|
|
l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
t++;
|
|
|
|
|
|
|
|
op->reg = *t - '0';
|
|
|
|
if (op->reg > 9 || op->reg < 0)
|
|
|
|
{
|
|
|
|
as_bad (_("unknown operator (r%s substituded as a register name"),
|
|
|
|
t);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
t++;
|
|
|
|
if (*t != ')')
|
|
|
|
{
|
|
|
|
op->reg = op->reg * 10;
|
|
|
|
op->reg += *t - '0';
|
|
|
|
|
|
|
|
if (op->reg > 15)
|
|
|
|
{
|
|
|
|
as_bad (_("unknown operator %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
if (op->reg == 2)
|
|
|
|
{
|
|
|
|
as_bad (_("r2 should not be used in indexed addressing mode"));
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (*(t + 1) != ')')
|
|
|
|
{
|
|
|
|
as_bad (_("unknown operator %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Extract constant. */
|
|
|
|
__tl = l;
|
|
|
|
*h = 0;
|
|
|
|
op->mode = OP_EXP;
|
|
|
|
parse_exp (__tl, &(op->exp));
|
|
|
|
if (op->exp.X_op == O_constant)
|
|
|
|
{
|
|
|
|
int x = op->exp.X_add_number;
|
|
|
|
|
|
|
|
if (x > 65535 || x < -32768)
|
|
|
|
{
|
|
|
|
as_bad (_("value out of range: %d"), x);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (x == 0)
|
|
|
|
{
|
|
|
|
op->mode = OP_REG;
|
|
|
|
op->am = 2;
|
|
|
|
op->ol = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (op->exp.X_op == O_symbol)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_bad (_("unknown expression in operand %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
while (0);
|
|
|
|
|
|
|
|
/* Register mode 'mov r1,r2'. */
|
|
|
|
do
|
|
|
|
{
|
|
|
|
char *t = l;
|
|
|
|
|
|
|
|
/* Operand should be a register. */
|
|
|
|
if (*t == 'r' || *t == 'R')
|
|
|
|
{
|
|
|
|
int x = atoi (t + 1);
|
|
|
|
|
|
|
|
if (check_reg (t + 1))
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (x < 0 || x > 15)
|
|
|
|
break; /* Symbolic mode. */
|
|
|
|
|
|
|
|
op->mode = OP_REG;
|
|
|
|
op->am = 0;
|
|
|
|
op->ol = 0;
|
|
|
|
op->reg = x;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
while (0);
|
|
|
|
|
|
|
|
/* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */
|
|
|
|
do
|
|
|
|
{
|
|
|
|
char *t = l;
|
|
|
|
|
|
|
|
__tl = l;
|
|
|
|
|
|
|
|
while (*t)
|
|
|
|
{
|
|
|
|
/* alpha/number underline dot for labels. */
|
|
|
|
if (! ISALNUM (*t) && *t != '_' && *t != '.')
|
|
|
|
{
|
|
|
|
as_bad (_("unknown operand %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
t++;
|
|
|
|
}
|
|
|
|
|
|
|
|
op->mode = OP_EXP;
|
|
|
|
op->reg = 0; /* PC relative... be careful. */
|
|
|
|
op->am = 1;
|
|
|
|
op->ol = 1;
|
|
|
|
__tl = l;
|
|
|
|
parse_exp (__tl, &(op->exp));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
while (0);
|
|
|
|
|
|
|
|
/* Unreachable. */
|
|
|
|
as_bad (_("unknown addressing mode for operand %s"), l);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* GAS will call this function for each section at the end of the assembly,
|
|
|
|
to permit the CPU backend to adjust the alignment of a section. */
|
|
|
|
|
|
|
|
valueT
|
|
|
|
md_section_align (seg, addr)
|
|
|
|
asection *seg;
|
|
|
|
valueT addr;
|
|
|
|
{
|
|
|
|
int align = bfd_get_section_alignment (stdoutput, seg);
|
|
|
|
|
|
|
|
return ((addr + (1 << align) - 1) & (-1 << align));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If you define this macro, it should return the offset between the
|
|
|
|
address of a PC relative fixup and the position from which the PC
|
|
|
|
relative adjustment should be made. On many processors, the base
|
|
|
|
of a PC relative instruction is the next instruction, so this
|
|
|
|
macro would return the length of an instruction. */
|
|
|
|
|
|
|
|
long
|
|
|
|
md_pcrel_from_section (fixp, sec)
|
|
|
|
fixS *fixp;
|
|
|
|
segT sec;
|
|
|
|
{
|
|
|
|
if (fixp->fx_addsy != (symbolS *) NULL
|
|
|
|
&& (!S_IS_DEFINED (fixp->fx_addsy)
|
|
|
|
|| (S_GET_SEGMENT (fixp->fx_addsy) != sec)))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
return fixp->fx_frag->fr_address + fixp->fx_where;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* GAS will call this for each fixup. It should store the correct
|
|
|
|
value in the object file. */
|
|
|
|
|
|
|
|
void
|
|
|
|
md_apply_fix3 (fixp, valuep, seg)
|
|
|
|
fixS *fixp;
|
|
|
|
valueT *valuep;
|
|
|
|
segT seg;
|
|
|
|
{
|
|
|
|
unsigned char *where;
|
|
|
|
unsigned long insn;
|
|
|
|
long value;
|
|
|
|
|
|
|
|
if (fixp->fx_addsy == (symbolS *) NULL)
|
|
|
|
{
|
|
|
|
value = *valuep;
|
|
|
|
fixp->fx_done = 1;
|
|
|
|
}
|
|
|
|
else if (fixp->fx_pcrel)
|
|
|
|
{
|
|
|
|
segT s = S_GET_SEGMENT (fixp->fx_addsy);
|
|
|
|
|
|
|
|
if (fixp->fx_addsy && (s == seg || s == absolute_section))
|
|
|
|
{
|
|
|
|
value = S_GET_VALUE (fixp->fx_addsy) + *valuep;
|
|
|
|
fixp->fx_done = 1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
value = *valuep;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
value = fixp->fx_offset;
|
|
|
|
|
|
|
|
if (fixp->fx_subsy != (symbolS *) NULL)
|
|
|
|
{
|
|
|
|
if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
|
|
|
|
{
|
|
|
|
value -= S_GET_VALUE (fixp->fx_subsy);
|
|
|
|
fixp->fx_done = 1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* We don't actually support subtracting a symbol. */
|
|
|
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
|
|
|
_("expression too complex"));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (fixp->fx_r_type)
|
|
|
|
{
|
|
|
|
default:
|
|
|
|
fixp->fx_no_overflow = 1;
|
|
|
|
break;
|
|
|
|
case BFD_RELOC_MSP430_10_PCREL:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fixp->fx_done)
|
|
|
|
{
|
|
|
|
/* Fetch the instruction, insert the fully resolved operand
|
|
|
|
value, and stuff the instruction back again. */
|
|
|
|
|
|
|
|
where = fixp->fx_frag->fr_literal + fixp->fx_where;
|
|
|
|
|
|
|
|
insn = bfd_getl16 (where);
|
|
|
|
|
|
|
|
switch (fixp->fx_r_type)
|
|
|
|
{
|
|
|
|
case BFD_RELOC_MSP430_10_PCREL:
|
|
|
|
if (value & 1)
|
|
|
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
|
|
|
_("odd address operand: %ld"), value);
|
|
|
|
|
|
|
|
/* Jumps are in words. */
|
|
|
|
value >>= 1;
|
|
|
|
--value; /* Correct PC. */
|
|
|
|
|
|
|
|
if (value < -512 || value > 511)
|
|
|
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
|
|
|
_("operand out of range: %ld"), value);
|
|
|
|
|
|
|
|
value &= 0x3ff; /* get rid of extended sign */
|
|
|
|
bfd_putl16 ((bfd_vma) (value | insn), where);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BFD_RELOC_MSP430_16_PCREL:
|
|
|
|
if (value & 1)
|
|
|
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
|
|
|
_("odd address operand: %ld"), value);
|
|
|
|
|
|
|
|
/* Nothing to be corrected here. */
|
|
|
|
if (value < -32768 || value > 65536)
|
|
|
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
|
|
|
_("operand out of range: %ld"), value);
|
|
|
|
|
|
|
|
value &= 0xffff; /* Get rid of extended sign. */
|
|
|
|
bfd_putl16 ((bfd_vma) value, where);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BFD_RELOC_MSP430_16_PCREL_BYTE:
|
|
|
|
/* Nothing to be corrected here. */
|
|
|
|
if (value < -32768 || value > 65536)
|
|
|
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
|
|
|
_("operand out of range: %ld"), value);
|
|
|
|
|
|
|
|
value &= 0xffff; /* Get rid of extended sign. */
|
|
|
|
bfd_putl16 ((bfd_vma) value, where);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BFD_RELOC_32:
|
|
|
|
bfd_putl16 ((bfd_vma) value, where);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BFD_RELOC_MSP430_16:
|
|
|
|
case BFD_RELOC_16:
|
|
|
|
case BFD_RELOC_MSP430_16_BYTE:
|
|
|
|
value &= 0xffff;
|
|
|
|
bfd_putl16 ((bfd_vma) value, where);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
as_fatal (_("line %d: unknown relocation type: 0x%x"),
|
|
|
|
fixp->fx_line, fixp->fx_r_type);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
fixp->fx_addnumber = value;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* A `BFD_ASSEMBLER' GAS will call this to generate a reloc. GAS
|
|
|
|
will pass the resulting reloc to `bfd_install_relocation'. This
|
|
|
|
currently works poorly, as `bfd_install_relocation' often does the
|
|
|
|
wrong thing, and instances of `tc_gen_reloc' have been written to
|
|
|
|
work around the problems, which in turns makes it difficult to fix
|
|
|
|
`bfd_install_relocation'. */
|
|
|
|
|
|
|
|
/* If while processing a fixup, a reloc really needs to be created
|
|
|
|
then it is done here. */
|
|
|
|
|
|
|
|
arelent *
|
|
|
|
tc_gen_reloc (seg, fixp)
|
|
|
|
asection *seg ATTRIBUTE_UNUSED;
|
|
|
|
fixS *fixp;
|
|
|
|
{
|
|
|
|
arelent *reloc;
|
|
|
|
|
|
|
|
reloc = (arelent *) xmalloc (sizeof (arelent));
|
|
|
|
|
|
|
|
reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
|
|
|
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
|
|
|
|
|
|
|
|
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
|
|
|
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
|
|
|
|
if (reloc->howto == (reloc_howto_type *) NULL)
|
|
|
|
{
|
|
|
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
|
|
|
_("reloc %d not supported by object file format"),
|
|
|
|
(int) fixp->fx_r_type);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|
|
|
|
|| fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
|
|
|
|
reloc->address = fixp->fx_offset;
|
|
|
|
|
|
|
|
reloc->addend = fixp->fx_offset;
|
|
|
|
|
|
|
|
return reloc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Parse ordinary expression. */
|
|
|
|
|
|
|
|
static char *
|
|
|
|
parse_exp (s, op)
|
|
|
|
char *s;
|
|
|
|
expressionS *op;
|
|
|
|
{
|
|
|
|
input_line_pointer = s;
|
|
|
|
expression (op);
|
|
|
|
if (op->X_op == O_absent)
|
|
|
|
as_bad (_("missing operand"));
|
|
|
|
return input_line_pointer;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
md_estimate_size_before_relax (fragp, seg)
|
|
|
|
fragS *fragp ATTRIBUTE_UNUSED;
|
|
|
|
asection *seg ATTRIBUTE_UNUSED;
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
return 0;
|
|
|
|
}
|