Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
-
-/*
- Written By Steve Chamberlain
- sac@cygnus.com
- */
+/* Written By Steve Chamberlain <sac@cygnus.com>. */
#include <stdio.h>
#include "as.h"
#define DSYMMODE (Hmode ? L_24 : L_16)
int bsize = L_8; /* default branch displacement */
-
void
h8300hmode ()
{
Smode = 1;
Hmode = 1;
}
+
void
sbranch (size)
int size;
bsize = size;
}
-static void pint ()
+static void
+pint ()
{
cons (Hmode ? 4 : 2);
}
const pseudo_typeS md_pseudo_table[] =
{
-
{"h8300h", h8300hmode, 0},
{"h8300s", h8300smode, 0},
{"sbranch", sbranch, L_8},
static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
-/*
- This function is called once, at assembler startup time. This should
- set up all the tables, etc that the MD part of the assembler needs
- */
-
-
+/* This function is called once, at assembler startup time. This
+ should set up all the tables, etc. that the MD part of the assembler
+ needs. */
void
md_begin ()
{
for (opcode = h8_opcodes; opcode->name; opcode++)
{
/* Strip off any . part when inserting the opcode and only enter
- unique codes into the hash table
- */
+ unique codes into the hash table. */
char *src = opcode->name;
unsigned int len = strlen (src);
char *dst = malloc (len + 1);
}
opcode->idx = idx;
-
- /* Find the number of operands */
+ /* Find the number of operands. */
opcode->noperands = 0;
while (opcode->args.nib[opcode->noperands] != E)
opcode->noperands++;
- /* Find the length of the opcode in bytes */
+
+ /* Find the length of the opcode in bytes. */
opcode->length = 0;
while (opcode->data.nib[opcode->length * 2] != E)
opcode->length++;
linkrelax = 1;
}
-
struct h8_exp
{
char *e_beg;
char *e_end;
expressionS e_exp;
};
+
int dispreg;
int opsize; /* Set when a register size is seen */
-
struct h8_op
{
op_type mode;
ccr
*/
-/* try and parse a reg name, returns number of chars consumed */
-int
+/* Try to parse a reg name. Return the number of chars consumed. */
+
+static int
parse_reg (src, mode, reg, direction)
char *src;
op_type *mode;
char *end;
int len;
- /* Cribbed from get_symbol_end(). */
+ /* Cribbed from get_symbol_end. */
if (!is_name_beginner (*src) || *src == '\001')
return 0;
- end = src+1;
+ end = src + 1;
while (is_part_of_name (*end) || *end == '\001')
end++;
len = end - src;
return 0;
}
-char *
+static char *
parse_exp (s, op)
char *s;
- expressionS * op;
+ expressionS *op;
{
char *save = input_line_pointer;
char *new;
{
ptr++;
/* ff fill any 8 bit quantity */
- /* exp->X_add_number -= 0x100;*/
+ /* exp->X_add_number -= 0x100; */
*mode |= L_8;
}
else
@(exp[:16], Rn) Register indirect with displacement
@Rn+
@-Rn
- @aa:8 absolute 8 bit
- @aa:16 absolute 16 bit
+ @aa:8 absolute 8 bit
+ @aa:16 absolute 16 bit
@aa absolute 16 bit
#xx[:size] immediate data
- @(exp:[8], pc) pc rel
+ @(exp:[8], pc) pc rel
@@aa[:8] memory indirect
*/
if (!mode)
{
- /* Choose a default mode */
+ /* Choose a default mode. */
if (op->exp.X_add_number < -32768
|| op->exp.X_add_number > 32767)
{
}
-
static void
get_operand (ptr, op, dst, direction)
char **ptr;
/* Gross. Gross. ldm and stm have a format not easily handled
by get_operand. We deal with it explicitly here. */
- if (src[0] == 'e' && src[1] == 'r' && isdigit(src[2])
- && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && isdigit(src[6]))
+ if (src[0] == 'e' && src[1] == 'r' && isdigit (src[2])
+ && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && isdigit (src[6]))
{
int low, high;
op->mode = MEMIND;
return;
-
}
-
if (*src == '-')
{
src++;
len = parse_reg (src, &mode, &num, direction);
if (len == 0)
{
- /* Oops, not a reg after all, must be ordinary exp */
+ /* Oops, not a reg after all, must be ordinary exp. */
src--;
- /* must be a symbol */
+ /* Must be a symbol. */
op->mode = ABS | PSIZE | direction;
*ptr = skip_colonthing (parse_exp (src, &op->exp),
&op->exp, &op->mode);
return;
-
-
}
-
if ((mode & SIZE) != PSIZE)
as_bad (_("Wrong size pointer register for architecture."));
op->mode = RDDEC;
}
if (*src == '(')
{
- /* Disp */
+ /* Disp. */
src++;
- /* Start off assuming a 16 bit offset */
-
+ /* Start off assuming a 16 bit offset. */
src = parse_exp (src, &op->exp);
}
}
-
if (*src == '#')
{
src++;
}
}
-
-static
-char *
+static char *
get_operands (noperands, op_end, operand)
unsigned int noperands;
char *op_end;
{
operand[1].mode = 0;
}
-
break;
+
case 2:
ptr++;
get_operand (&ptr, operand + 0, 0, SRC);
abort ();
}
-
return ptr;
}
/* Passed a pointer to a list of opcodes which use different
addressing modes, return the opcode which matches the opcodes
- provided
- */
-static
-struct h8_opcode *
+ provided. */
+static struct h8_opcode *
get_specific (opcode, operands, size)
struct h8_opcode *opcode;
struct h8_op *operands;
opsize = op & SIZE;
- /* The size of the reg is v important */
+ /* The size of the reg is v important. */
if ((op & SIZE) != (x & SIZE))
found = 0;
}
{
operands[i].mode &= ~ABS;
operands[i].mode |= ABSJMP;
- /* But it may not be 24 bits long */
+ /* But it may not be 24 bits long. */
if (!Hmode)
{
operands[i].mode &= ~SIZE;
}
else if ((op & (KBIT | DBIT)) && (x & IMM))
{
- /* This is ok if the immediate value is sensible */
+ /* This is ok if the immediate value is sensible. */
}
else if (op & PCREL)
{
- /* The size of the displacement is important */
+ /* The size of the displacement is important. */
if ((op & SIZE) != (x & SIZE))
found = 0;
}
x |= L_32;
}
/* Promote an L8 to L_16 if it makes us match. */
- if (op & ABS && op & L_8 && op & DISP)
+ if (op & ABS && op & L_8 && op & DISP)
{
if (x & L_16)
- found= 1;
+ found = 1;
}
else if ((x & SIZE) != 0
&& ((op & SIZE) != (x & SIZE)))
else if ((op & MODE) != (x & MODE))
{
found = 0;
- }
+ }
}
}
}
if (operand->exp.X_add_symbol == 0
&& operand->exp.X_op_symbol == 0)
{
+ /* No symbol involved, let's look at offset, it's dangerous if
+ any of the high bits are not 0 or ff's, find out by oring or
+ anding with the width and seeing if the answer is 0 or all
+ fs. */
- /* No symbol involved, let's look at offset, it's dangerous if any of
- the high bits are not 0 or ff's, find out by oring or anding with
- the width and seeing if the answer is 0 or all fs*/
-
if ((operand->exp.X_add_number & ~width) != 0 &&
(operand->exp.X_add_number | width) != (~0))
{
- if (width == 255
+ if (width == 255
&& (operand->exp.X_add_number & 0xff00) == 0xff00)
{
/* Just ignore this one - which happens when trying to
fit a 16 bit address truncated into an 8 bit address
of something like bset. */
}
- else
+ else
{
as_warn (_("operand %s0x%lx out of range."), string,
(unsigned long) operand->exp.X_add_number);
}
}
}
-
}
/* RELAXMODE has one of 3 values:
int size;
int where;
-
char *t = operand->mode & IMM ? "#" : "@";
if (operand->exp.X_add_symbol == 0)
break;
case L_32:
- /* This should be done with bfd */
+ /* This should be done with bfd. */
bytes[0] = operand->exp.X_add_number >> 24;
bytes[1] = operand->exp.X_add_number >> 16;
bytes[2] = operand->exp.X_add_number >> 8;
}
break;
}
-
}
else
{
switch (operand->mode & SIZE)
{
-
case L_24:
case L_32:
size = 4;
idx = R_RELLONG;
break;
default:
- as_bad(_("Can't work out size of operand.\n"));
+ as_bad (_("Can't work out size of operand.\n"));
case L_16:
size = 2;
where = 0;
0,
idx);
}
-
}
-/* Now we know what sort of opcodes it is, lets build the bytes -
- */
+/* Now we know what sort of opcodes it is, let's build the bytes. */
static void
build_bytes (this_try, operand)
struct h8_opcode *this_try;
}
else
{
-
if (c & (REG | IND | INC | DEC))
{
nib = operand[d].reg;
{
nib = dispreg;
}
- else if (c & ABS )
+ else if (c & ABS)
{
operand[d].mode = c;
absat = nibble_count / 2;
as_bad (_("Need #1 or #2 here"));
break;
}
- /* stop it making a fix */
+ /* Stop it making a fix. */
operand[0].mode = 0;
}
if (c & MACREG)
{
- nib = 2 + operand[d].reg;
+ if (operand[0].mode == MACREG)
+ /* stmac has mac[hl] as the first operand. */
+ nib = 2 + operand[0].reg;
+ else
+ /* ldmac has mac[hl] as the second operand. */
+ nib = 2 + operand[1].reg;
}
}
nibble_count++;
if (strcmp (this_try->name, "mov.b") == 0)
movb = 1;
- /* output any fixes */
+ /* Output any fixes. */
for (i = 0; i < 2; i++)
{
int x = operand[i].mode;
}
else if (x & MEMIND)
{
-
check_operand (operand + i, 0xff, "@@");
fix_new_exp (frag_now,
output - frag_now->fr_literal + 1,
}
else if (x & ABSJMP)
{
- /* This jmp may be a jump or a branch */
+ /* This jmp may be a jump or a branch. */
check_operand (operand + i, Hmode ? 0xffffff : 0xffff, "@");
if (operand[i].exp.X_add_number & 1)
(unsigned long) operand->exp.X_add_number);
}
if (!Hmode)
- operand[i].exp.X_add_number =
+ operand[i].exp.X_add_number =
((operand[i].exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000;
fix_new_exp (frag_now,
output - frag_now->fr_literal,
R_JMPL1);
}
}
-
}
-/*
- try and give an intelligent error message for common and simple to
- detect errors
- */
-
+/* Try to give an intelligent error message for common and simple to
+ detect errors. */
static void
clever_message (opcode, operand)
struct h8_opcode *opcode;
struct h8_op *operand;
{
- /* Find out if there was more than one possible opccode */
+ /* Find out if there was more than one possible opcode. */
if ((opcode + 1)->idx != opcode->idx)
{
unsigned int argn;
- /* Only one opcode of this flavour, try and guess which operand
- didn't match */
+ /* Only one opcode of this flavour, try to guess which operand
+ didn't match. */
for (argn = 0; argn < opcode->noperands; argn++)
{
switch (opcode->args.nib[argn])
break;
case RS8:
-
if (operand[argn].mode != RS8)
{
as_bad (_("source operand must be 8 bit register"));
}
break;
-
case ABS16SRC:
if (operand[argn].mode != ABS16SRC)
{
as_bad (_("invalid operands"));
}
-/* This is the guts of the machine-dependent assembler. STR points to a
- machine dependent instruction. This funciton is supposed to emit
- the frags/bytes it assembles to.
- */
-
-
-
+/* This is the guts of the machine-dependent assembler. STR points to
+ a machine dependent instruction. This function is supposed to emit
+ the frags/bytes it assembles. */
void
md_assemble (str)
char *str;
char c;
int size;
- /* Drop leading whitespace */
+ /* Drop leading whitespace. */
while (*str == ' ')
str++;
- /* find the op code end */
+ /* Find the op code end. */
for (op_start = op_end = str;
*op_end != 0 && *op_end != ' ';
op_end++)
}
}
- ;
-
if (op_end == op_start)
{
as_bad (_("can't find opcode "));
return;
}
- /* We use to set input_line_pointer to the result of get_operands,
+ /* We used to set input_line_pointer to the result of get_operands,
but that is wrong. Our caller assumes we don't change it. */
(void) get_operands (opcode->noperands, op_end, operand);
if (opcode == 0)
{
- /* Couldn't find an opcode which matched the operands */
+ /* Couldn't find an opcode which matched the operands. */
char *where = frag_more (2);
where[0] = 0x0;
}
build_bytes (opcode, operand);
-
}
void
tc_crawl_symbol_chain (headers)
- object_headers * headers ATTRIBUTE_UNUSED;
+ object_headers *headers ATTRIBUTE_UNUSED;
{
printf (_("call to tc_crawl_symbol_chain \n"));
}
void
tc_headers_hook (headers)
- object_headers * headers ATTRIBUTE_UNUSED;
+ object_headers *headers ATTRIBUTE_UNUSED;
{
printf (_("call to tc_headers_hook \n"));
}
/* Equal to MAX_PRECISION in atof-ieee.c */
#define MAX_LITTLENUMS 6
-/* 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.
- */
+/* 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)
char type;
struct option md_longopts[] = {
{NULL, no_argument, NULL, 0}
};
-size_t md_longopts_size = sizeof(md_longopts);
+
+size_t md_longopts_size = sizeof (md_longopts);
int
md_parse_option (c, arg)
abort ();
}
-valueT
+valueT
md_section_align (seg, size)
segT seg;
valueT size;
{
- return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
-
+ return ((size + (1 << section_alignment[(int) seg]) - 1)
+ & (-1 << section_alignment[(int) seg]));
}
void
abort ();
}
-/* Put number into target byte order */
-
+/* Put number into target byte order. */
void
md_number_to_chars (ptr, use, nbytes)
char *ptr;
{
number_to_chars_bigendian (ptr, use, nbytes);
}
+
long
md_pcrel_from (fixP)
fixS *fixP ATTRIBUTE_UNUSED;
abort ();
}
-
void
tc_reloc_mangle (fix_ptr, intr, base)
fixS *fix_ptr;
symbol_ptr = fix_ptr->fx_addsy;
/* If this relocation is attached to a symbol then it's ok
- to output it */
+ to output it. */
if (fix_ptr->fx_r_type == TC_CONS_RELOC)
{
/* cons likes to create reloc32's whatever the size of the reloc..
break;
default:
abort ();
-
}
-
}
else
{
}
else
intr->r_symndx = -1;
-
-
}
-
-/* end of tc-h8300.c */
projects / deliverable / binutils-gdb.git / blobdiff