#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"
struct rcodes_s
{
char * name;
int index;
int sop;
long lpos;
long lop0;
long lop1;
long lop2;
};
#define MSP430_RLC(n,i,sop,o1) \
{#n, i, sop, 2, (o1 + 2), 0x4010, 0}
static struct rcodes_s msp430_rcodes[] =
{
MSP430_RLC (beq, 0, 0x2400, 0x2000),
MSP430_RLC (bne, 1, 0x2000, 0x2400),
MSP430_RLC (blt, 2, 0x3800, 0x3400),
MSP430_RLC (bltu, 3, 0x2800, 0x2c00),
MSP430_RLC (bge, 4, 0x3400, 0x3800),
MSP430_RLC (bgeu, 5, 0x2c00, 0x2800),
{"bltn", 6, 0x3000, 3, 0x3000 + 1, 0x3c00 + 2,0x4010},
{"jump", 7, 0x3c00, 1, 0x4010, 0, 0},
{0,0,0,0,0,0,0}
};
#undef MSP430_RLC
struct hcodes_s
{
char * name;
int index;
int tlab;
int op0;
int op1;
int lop0;
int lop1;
int lop2;
};
static struct hcodes_s msp430_hcodes[] =
{
{"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x4010 },
{"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x4010 },
{"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x4010 },
{"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x4010 },
{0,0,0,0,0,0,0,0}
};
const char comment_chars[] = ";";
const char line_comment_chars[] = "#";
const char line_separator_chars[] = "";
const char EXP_CHARS[] = "eE";
const char FLT_CHARS[] = "dD";
extern LITTLENUM_TYPE generic_bignum[];
static struct hash_control *msp430_hash;
#define STATE_UNCOND_BRANCH 1
#define STATE_NOOV_BRANCH 3
#define STATE_SIMPLE_BRANCH 2
#define STATE_EMUL_BRANCH 4
#define CNRL 2
#define CUBL 4
#define CNOL 8
#define CSBL 6
#define CEBL 4
#define STATE_BITS10 1
#define STATE_WORD 2
#define STATE_UNDEF 3
#define ENCODE_RELAX(what,length) (((what) << 2) + (length))
#define RELAX_STATE(s) ((s) & 3)
#define RELAX_LEN(s) ((s) >> 2)
#define RELAX_NEXT(a,b) ENCODE_RELAX (a, b + 1)
relax_typeS md_relax_table[] =
{
{1, 1, 0, 0},
{1, 1, 0, 0},
{1, 1, 0, 0},
{1, 1, 0, 0},
{1, 1, 8, 5},
{1024, -1024, CNRL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_BITS10)},
{0, 0, CUBL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_WORD)},
{1, 1, CUBL, 0},
{0, 0, 8, 9},
{1024, -1024, CNRL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_BITS10)},
{0, 0, CSBL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_WORD)},
{1, 1, CSBL, 0},
{1, 1, 8, 13},
{1024, -1024, CNRL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_BITS10)},
{0, 0, CNOL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_WORD)},
{1, 1, CNOL, 0},
{1, 1, 8, 17},
{1020, -1020, CEBL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_BITS10)},
{0, 0, CNOL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_WORD)},
{1, 1, CNOL, 0}
};
#define MAX_OP_LEN 256
struct mcu_type_s
{
char * name;
int isa;
int mach;
};
#define MSP430_ISA_11 11
#define MSP430_ISA_110 110
#define MSP430_ISA_12 12
#define MSP430_ISA_13 13
#define MSP430_ISA_14 14
#define MSP430_ISA_15 15
#define MSP430_ISA_16 16
#define MSP430_ISA_31 31
#define MSP430_ISA_32 32
#define MSP430_ISA_33 33
#define MSP430_ISA_41 41
#define MSP430_ISA_42 42
#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},
{"msp430x1101", MSP430_ISA_110, bfd_mach_msp110},
{"msp430x1111", MSP430_ISA_110, bfd_mach_msp110},
{"msp430x1121", MSP430_ISA_110, bfd_mach_msp110},
{"msp430x1122", MSP430_ISA_11, bfd_mach_msp110},
{"msp430x1132", MSP430_ISA_11, bfd_mach_msp110},
{"msp430x122", MSP430_ISA_12, bfd_mach_msp12},
{"msp430x123", MSP430_ISA_12, bfd_mach_msp12},
{"msp430x1222", MSP430_ISA_12, bfd_mach_msp12},
{"msp430x1232", MSP430_ISA_12, bfd_mach_msp12},
{"msp430x133", MSP430_ISA_13, bfd_mach_msp13},
{"msp430x135", MSP430_ISA_13, bfd_mach_msp13},
{"msp430x1331", MSP430_ISA_13, bfd_mach_msp13},
{"msp430x1351", MSP430_ISA_13, bfd_mach_msp13},
{"msp430x147", MSP430_ISA_14, bfd_mach_msp14},
{"msp430x148", MSP430_ISA_14, bfd_mach_msp14},
{"msp430x149", MSP430_ISA_14, bfd_mach_msp14},
{"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},
{"msp430x1610", MSP430_ISA_16, bfd_mach_msp16},
{"msp430x1611", MSP430_ISA_16, bfd_mach_msp16},
{"msp430x1612", MSP430_ISA_16, bfd_mach_msp16},
{"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},
{"msp430x412", MSP430_ISA_41, bfd_mach_msp41},
{"msp430x413", MSP430_ISA_41, bfd_mach_msp41},
{"msp430x415", MSP430_ISA_41, bfd_mach_msp41},
{"msp430x417", 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},
{"msp430xG437", MSP430_ISA_43, bfd_mach_msp43},
{"msp430xG438", MSP430_ISA_43, bfd_mach_msp43},
{"msp430xG439", MSP430_ISA_43, bfd_mach_msp43},
{"msp430x435", MSP430_ISA_43, bfd_mach_msp43},
{"msp430x436", MSP430_ISA_43, bfd_mach_msp43},
{"msp430x437", MSP430_ISA_43, bfd_mach_msp43},
{"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;
#define MSP430_PROFILER_FLAG_ENTRY 1
#define MSP430_PROFILER_FLAG_EXIT 2
#define MSP430_PROFILER_FLAG_INITSECT 4
#define MSP430_PROFILER_FLAG_FINISECT 8
#define MSP430_PROFILER_FLAG_LIBCALL 0x10
#define MSP430_PROFILER_FLAG_STDCALL 0x20
#define MSP430_PROFILER_FLAG_STACKDMD 0x40
#define MSP430_PROFILER_FLAG_ISR 0x80
#define MSP430_PROFILER_FLAG_PROLSTART 0x100
#define MSP430_PROFILER_FLAG_PROLEND 0x200
#define MSP430_PROFILER_FLAG_EPISTART 0x400
#define MSP430_PROFILER_FLAG_EPIEND 0x800
#define MSP430_PROFILER_FLAG_JUMP 0x1000
#define MSP430_PROFILER_FLAG_FRAGMENT 0x2000
#define MSP430_PROFILER_FLAG_EXTRA 0x4000
#define MSP430_PROFILER_FLAG_notyet 0x8000
static int
pow2value (int y)
{
int n = 0;
unsigned int x;
x = y;
if (!x)
return 1;
for (; x; x = x >> 1)
if (x & 1)
n++;
return n == 1;
}
static char *
parse_exp (char * s, expressionS * op)
{
input_line_pointer = s;
expression (op);
if (op->X_op == O_absent)
as_bad (_("missing operand"));
return input_line_pointer;
}
static void
del_spaces (char * s)
{
while (*s)
{
if (ISSPACE (*s))
{
char *m = s + 1;
while (ISSPACE (*m) && *m)
m++;
memmove (s, m, strlen (m) + 1);
}
else
s++;
}
}
static inline char *
skip_space (char * s)
{
while (ISSPACE (*s))
++s;
return s;
}
static char *
extract_operand (char * from, char * to, int limit)
{
int size = 0;
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 void
msp430_profiler (int dummy ATTRIBUTE_UNUSED)
{
char buffer[1024];
char f[32];
char * str = buffer;
char * flags = f;
int p_flags = 0;
char * halt;
int ops = 0;
int left;
char * s;
segT seg;
int subseg;
char * end = 0;
expressionS exp;
expressionS exp1;
s = input_line_pointer;
end = input_line_pointer;
while (*end && *end != '\n')
end++;
while (*s && *s != '\n')
{
if (*s == ',')
ops++;
s++;
}
left = 3 - ops;
if (ops < 1)
{
as_bad (_(".profiler pseudo requires at least two operands."));
input_line_pointer = end;
return;
}
input_line_pointer = extract_operand (input_line_pointer, flags, 32);
while (*flags)
{
switch (*flags)
{
case '"':
break;
case 'a':
p_flags |= MSP430_PROFILER_FLAG_FRAGMENT;
break;
case 'j':
p_flags |= MSP430_PROFILER_FLAG_JUMP;
break;
case 'P':
p_flags |= MSP430_PROFILER_FLAG_PROLSTART;
break;
case 'p':
p_flags |= MSP430_PROFILER_FLAG_PROLEND;
break;
case 'E':
p_flags |= MSP430_PROFILER_FLAG_EPISTART;
break;
case 'e':
p_flags |= MSP430_PROFILER_FLAG_EPIEND;
break;
case 's':
p_flags |= MSP430_PROFILER_FLAG_ENTRY;
break;
case 'x':
p_flags |= MSP430_PROFILER_FLAG_EXIT;
break;
case 'i':
p_flags |= MSP430_PROFILER_FLAG_INITSECT;
break;
case 'f':
p_flags |= MSP430_PROFILER_FLAG_FINISECT;
break;
case 'l':
p_flags |= MSP430_PROFILER_FLAG_LIBCALL;
break;
case 'c':
p_flags |= MSP430_PROFILER_FLAG_STDCALL;
break;
case 'd':
p_flags |= MSP430_PROFILER_FLAG_STACKDMD;
break;
case 'I':
p_flags |= MSP430_PROFILER_FLAG_ISR;
break;
case 't':
p_flags |= MSP430_PROFILER_FLAG_EXTRA;
break;
default:
as_warn (_("unknown profiling flag - ignored."));
break;
}
flags++;
}
if (p_flags
&& ( ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_ENTRY
| MSP430_PROFILER_FLAG_EXIT))
|| ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_PROLSTART
| MSP430_PROFILER_FLAG_PROLEND
| MSP430_PROFILER_FLAG_EPISTART
| MSP430_PROFILER_FLAG_EPIEND))
|| ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_INITSECT
| MSP430_PROFILER_FLAG_FINISECT))))
{
as_bad (_("ambigious flags combination - '.profiler' directive ignored."));
input_line_pointer = end;
return;
}
if (now_seg == absolute_section)
{
exp1.X_op = O_constant;
exp1.X_add_number = abs_section_offset;
as_warn (_("profiling in absolute section? Hm..."));
}
else
{
exp1.X_op = O_symbol;
exp1.X_add_symbol = symbol_temp_new_now ();
exp1.X_add_number = 0;
}
exp.X_op = O_constant;
exp.X_add_number = p_flags;
seg = now_seg;
subseg = now_subseg;
obj_elf_change_section (".profiler", SHT_PROGBITS, 0, 0, 0, 0, 0);
emit_expr (& exp, 2);
emit_expr (& exp1, 2);
while (ops--)
{
halt = extract_operand (input_line_pointer, str, 1024);
parse_exp (str, & exp);
emit_expr (& exp, 2);
input_line_pointer = halt;
}
exp.X_op = O_constant;
exp.X_add_number = 0;
while (left--)
emit_expr (& exp, 2);
subseg_set (seg, subseg);
}
static char *
extract_word (char * from, char * to, int limit)
{
char *op_start;
char *op_end;
int size = 0;
from = skip_space (from);
*to = 0;
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;
}
#define OPTION_MMCU 'm'
static void
msp430_set_arch (int dummy ATTRIBUTE_UNUSED)
{
char *str = (char *) alloca (32);
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);
}
static void
show_mcu_list (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");
}
int
md_parse_option (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;
}
const pseudo_typeS md_pseudo_table[] =
{
{"arch", msp430_set_arch, 0},
{"profiler", msp430_profiler, 0},
{NULL, NULL, 0}
};
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);
void
md_show_usage (FILE * stream)
{
fprintf (stream,
_("MSP430 options:\n"
" -mmcu=[msp430-name] select microcontroller type\n"
" msp430x110 msp430x112\n"
" msp430x1101 msp430x1111\n"
" msp430x1121 msp430x1122 msp430x1132\n"
" msp430x122 msp430x123\n"
" msp430x1222 msp430x1232\n"
" msp430x133 msp430x135\n"
" msp430x1331 msp430x1351\n"
" msp430x147 msp430x148 msp430x149\n"
" msp430x155 msp430x156 msp430x157\n"
" msp430x167 msp430x168 msp430x169\n"
" msp430x1610 msp430x1611 msp430x1612\n"
" msp430x311 msp430x312 msp430x313 msp430x314 msp430x315\n"
" msp430x323 msp430x325\n"
" msp430x336 msp430x337\n"
" msp430x412 msp430x413 msp430x415 msp430x417\n"
" msp430xE423 msp430xE425 msp430E427\n"
" msp430xW423 msp430xW425 msp430W427\n"
" msp430xG437 msp430xG438 msp430G439\n"
" msp430x435 msp430x436 msp430x437\n"
" msp430x447 msp430x448 msp430x449\n"));
show_mcu_list (stream);
}
symbolS *
md_undefined_symbol (char * name ATTRIBUTE_UNUSED)
{
return 0;
}
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;
}
char *
md_atof (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);
for (wordP = words + prec - 1; prec--;)
{
md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE));
litP += sizeof (LITTLENUM_TYPE);
}
return NULL;
}
void
md_begin (void)
{
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);
}
static int
check_reg (char * t)
{
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 (struct msp430_operand_s * op,
char * l, int bin, int * imm_op)
{
char *__tl = l;
if (*l == '#')
{
char *h = l;
int vshift = -1;
int rval = 0;
*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;
op->am = 3;
op->ol = 1;
__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;
x = op->exp.X_add_number;
}
if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768)
{
as_bad (_("value %d out of range. Use #lo() or #hi()"), x);
return 1;
}
x = (short) x;
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
if (bin == 0x1200)
{
}
else
#endif
{
op->reg = 2;
op->am = 2;
op->ol = 0;
op->mode = OP_REG;
}
}
else if (x == 8)
{
#ifdef PUSH_1X_WORKAROUND
if (bin == 0x1200)
{
}
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 if (op->exp.X_op == O_register)
as_bad
(_("Registers cannot be used within immediate expression [%s]"), l);
else
as_bad (_("unknown operand %s"), l);
return 0;
}
if (*l == '&')
{
char *h = l;
op->reg = 2;
op->am = 1;
op->ol = 1;
__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
{
if (op->exp.X_op == O_register)
as_bad
(_("Registers cannot be used within absolute expression [%s]"), l);
else
as_bad (_("unknown expression in operand %s"), l);
return 1;
}
return 0;
}
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++;
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;
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;
}
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;
t++;
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;
}
}
__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
{
if (op->exp.X_op == O_register)
as_bad
(_("Registers cannot be used as a prefix of indexed expression [%s]"), l);
else
as_bad (_("unknown expression in operand %s"), l);
return 1;
}
return 0;
}
while (0);
do
{
char *t = l;
if (*t == 'r' || *t == 'R')
{
int x = atoi (t + 1);
if (check_reg (t + 1))
break;
if (x < 0 || x > 15)
break;
op->mode = OP_REG;
op->am = 0;
op->ol = 0;
op->reg = x;
return 0;
}
}
while (0);
do
{
op->mode = OP_EXP;
op->reg = 0;
op->am = 1;
op->ol = 1;
__tl = l;
parse_exp (__tl, &(op->exp));
return 0;
}
while (0);
as_bad (_("unknown addressing mode for operand %s"), l);
return 1;
}
static int
msp430_dstoperand (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 unsigned int
msp430_operands (struct msp430_opcode_s * opcode, char * line)
{
int bin = opcode->bin_opcode;
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;
if (*line == '.' && TOLOWER (*(line + 1)) == 'b')
{
bin |= BYTE_OPERATION;
byte_op = 1;
}
else
byte_op = 0;
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:
switch (opcode->insn_opnumb)
{
case 0:
__is = 2;
frag = frag_more (__is);
bfd_putl16 ((bfd_vma) bin, frag);
break;
case 1:
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:
{
line = extract_operand (line, l1, sizeof (l1));
strncpy (l2, l1, sizeof (l2));
l2[sizeof (l2) - 1] = '\0';
res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
res += msp430_dstoperand (&op2, l2, opcode->bin_opcode);
if (res)
break;
bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
__is = 1 + op1.ol + op2.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);
}
if (op2.mode == OP_EXP)
{
imm_op = 0;
bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0));
if (op2.reg)
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:
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:
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;
bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
__is = 1 + op1.ol + op2.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);
}
if (op2.mode == OP_EXP)
{
imm_op = 0;
bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0));
if (op2.reg)
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:
if (opcode->insn_opnumb == 0)
{
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;
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))
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:
line = extract_operand (line, l1, sizeof (l1));
if (l1[0])
{
char *m = l1;
expressionS exp;
if (*m == '$')
m++;
parse_exp (m, &exp);
frag = frag_more (2);
if (exp.X_op == O_constant)
{
int x = exp.X_add_number;
if (x & 1)
{
as_warn (_("Even number required. Rounded to %d"), x + 1);
x++;
}
if ((*l1 == '$' && 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 '$'"));
break;
}
else
{
as_bad (_
("instruction requires label or value in range -511:512"));
break;
}
}
else
{
as_bad (_("instruction requires label"));
break;
}
break;
case 4:
line = extract_operand (line, l1, sizeof (l1));
if (l1[0])
{
char *m = l1;
expressionS exp;
if (*m == '#' || *m == '$')
m++;
parse_exp (m, & exp);
if (exp.X_op == O_symbol)
{
struct rcodes_s rc = msp430_rcodes[opcode->insn_opnumb];
frag = frag_more (8);
bfd_putl16 ((bfd_vma) rc.sop, frag);
frag = frag_variant (rs_machine_dependent, 8, 2,
ENCODE_RELAX (rc.lpos, STATE_BITS10),
exp.X_add_symbol,
0,
(char *) frag);
break;
}
}
as_bad (_("instruction requires label"));
break;
case 5:
line = extract_operand (line, l1, sizeof (l1));
if (l1[0])
{
char * m = l1;
expressionS exp;
if (*m == '#' || *m == '$')
m++;
parse_exp (m, & exp);
if (exp.X_op == O_symbol)
{
struct hcodes_s hc = msp430_hcodes[opcode->insn_opnumb];
frag = frag_more (8);
bfd_putl16 ((bfd_vma) hc.op0, frag);
bfd_putl16 ((bfd_vma) hc.op1, frag+2);
frag = frag_variant (rs_machine_dependent, 8, 2,
ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10),
exp.X_add_symbol,
0,
(char *) frag);
break;
}
}
as_bad (_("instruction requires label"));
break;
default:
as_bad (_("Ilegal instruction or not implmented opcode."));
}
input_line_pointer = line;
return 0;
}
void
md_assemble (char * str)
{
struct msp430_opcode_s * opcode;
char cmd[32];
unsigned int i = 0;
str = skip_space (str);
str = extract_cmd (str, cmd, sizeof (cmd));
while (cmd[i] && i < sizeof (cmd))
{
char a = TOLOWER (cmd[i]);
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;
}
}
valueT
md_section_align (asection * seg, valueT addr)
{
int align = bfd_get_section_alignment (stdoutput, seg);
return ((addr + (1 << align) - 1) & (-1 << align));
}
long
md_pcrel_from_section (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;
}
void
md_apply_fix3 (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 = * 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
{
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)
{
where = (unsigned char *) 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);
value >>= 1;
--value;
if (value < -512 || value > 511)
as_bad_where (fixp->fx_file, fixp->fx_line,
_("operand out of range: %ld"), value);
value &= 0x3ff;
bfd_putl16 ((bfd_vma) (value | insn), where);
break;
case BFD_RELOC_MSP430_RL_PCREL:
case BFD_RELOC_MSP430_16_PCREL:
if (value & 1)
as_bad_where (fixp->fx_file, fixp->fx_line,
_("odd address operand: %ld"), value);
if (value < -32768 || value > 65536)
as_bad_where (fixp->fx_file, fixp->fx_line,
_("operand out of range: %ld"), value);
value &= 0xffff;
bfd_putl16 ((bfd_vma) value, where);
break;
case BFD_RELOC_MSP430_16_PCREL_BYTE:
if (value < -32768 || value > 65536)
as_bad_where (fixp->fx_file, fixp->fx_line,
_("operand out of range: %ld"), value);
value &= 0xffff;
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;
}
}
arelent *
tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
{
arelent * reloc;
reloc = xmalloc (sizeof (arelent));
reloc->sym_ptr_ptr = 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;
}
int
md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED,
asection * segment_type ATTRIBUTE_UNUSED)
{
if (fragP->fr_symbol && S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
{
fragP->fr_subtype =
ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_BITS10);
}
else if (fragP->fr_symbol)
{
fragP->fr_subtype =
ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_WORD);
}
else
{
fragP->fr_subtype =
ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_UNDEF);
}
return md_relax_table[fragP->fr_subtype].rlx_length;
}
void
md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,
asection * sec ATTRIBUTE_UNUSED,
fragS * fragP)
{
char * where = 0;
int rela = -1;
int i;
struct rcodes_s * cc = NULL;
struct hcodes_s * hc = NULL;
switch (fragP->fr_subtype)
{
case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_BITS10):
case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_BITS10):
case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_BITS10):
rela = BFD_RELOC_MSP430_10_PCREL;
break;
case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_WORD):
case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_UNDEF):
cc = & msp430_rcodes[7];
where = fragP->fr_literal + fragP->fr_fix;
bfd_putl16 (cc->lop0, where);
rela = BFD_RELOC_MSP430_RL_PCREL;
fragP->fr_fix += 2;
break;
case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_WORD):
case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_UNDEF):
{
int insn = bfd_getl16 (fragP->fr_opcode);
insn &= 0xffff;
for (i = 0; i < 7 && !cc; i++)
if (msp430_rcodes[i].sop == insn)
cc = & msp430_rcodes[i];
if (!cc || !cc->name)
as_fatal (_("internal inconsistency problem in %s: insn %04lx"),
__FUNCTION__, (long) insn);
where = fragP->fr_literal + fragP->fr_fix;
bfd_putl16 (cc->lop0, where);
bfd_putl16 (cc->lop1, where + 2);
rela = BFD_RELOC_MSP430_RL_PCREL;
fragP->fr_fix += 4;
}
break;
case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_WORD):
case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_UNDEF):
cc = & msp430_rcodes[6];
where = fragP->fr_literal + fragP->fr_fix;
bfd_putl16 (cc->lop0, where);
bfd_putl16 (cc->lop1, where + 2);
bfd_putl16 (cc->lop2, where + 4);
rela = BFD_RELOC_MSP430_RL_PCREL;
fragP->fr_fix += 6;
break;
case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10):
{
int insn = bfd_getl16 (fragP->fr_opcode + 2);
insn &= 0xffff;
for (i = 0; i < 4 && !hc; i++)
if (msp430_hcodes[i].op1 == insn)
hc = &msp430_hcodes[i];
if (!hc || !hc->name)
as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"),
__FUNCTION__, (long) insn);
rela = BFD_RELOC_MSP430_10_PCREL;
if (hc->tlab == 2)
fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
fragP->fr_offset, TRUE, rela);
fragP->fr_fix += 2;
}
break;
case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_WORD):
case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_UNDEF):
{
int insn = bfd_getl16 (fragP->fr_opcode + 2);
insn &= 0xffff;
for (i = 0; i < 4 && !hc; i++)
if (msp430_hcodes[i].op1 == insn)
hc = & msp430_hcodes[i];
if (!hc || !hc->name)
as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"),
__FUNCTION__, (long) insn);
rela = BFD_RELOC_MSP430_RL_PCREL;
where = fragP->fr_literal + fragP->fr_fix;
bfd_putl16 (hc->lop0, where);
bfd_putl16 (hc->lop1, where + 2);
bfd_putl16 (hc->lop2, where + 4);
fragP->fr_fix += 6;
}
break;
default:
as_fatal (_("internal inconsistency problem in %s: %lx"),
__FUNCTION__, (long) fragP->fr_subtype);
break;
}
fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
fragP->fr_offset, TRUE, rela);
fragP->fr_fix += 2;
}
long
msp430_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS * fragP,
long stretch ATTRIBUTE_UNUSED)
{
long growth;
offsetT aim = 0;
symbolS *symbolP;
const relax_typeS *this_type;
const relax_typeS *start_type;
relax_substateT next_state;
relax_substateT this_state;
const relax_typeS *table = md_relax_table;
if (RELAX_STATE (fragP->fr_subtype) == STATE_UNDEF
|| RELAX_STATE (fragP->fr_subtype) == STATE_WORD)
return 0;
if (RELAX_STATE (fragP->fr_subtype) == STATE_BITS10)
{
symbolP = fragP->fr_symbol;
if (symbol_resolved_p (symbolP))
as_fatal (_("internal inconsistency problem in %s: resolved symbol"),
__FUNCTION__);
aim = S_GET_VALUE (symbolP) - fragP->fr_address - fragP->fr_fix;
}
this_state = fragP->fr_subtype;
start_type = this_type = table + this_state;
if (aim < 0)
{
for (next_state = this_type->rlx_more; next_state;)
if (aim >= this_type->rlx_backward)
next_state = 0;
else
{
this_state = next_state;
this_type = table + this_state;
next_state = this_type->rlx_more;
}
}
else
{
for (next_state = this_type->rlx_more; next_state;)
if (aim <= this_type->rlx_forward)
next_state = 0;
else
{
this_state = next_state;
this_type = table + this_state;
next_state = this_type->rlx_more;
}
}
growth = this_type->rlx_length - start_type->rlx_length;
if (growth != 0)
fragP->fr_subtype = this_state;
return growth;
}