-/* tc-h8300.c -- Assemble code for the Hitachi H8/300
+/* tc-h8300.c -- Assemble code for the Renesas H8/300
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
- 2001, 2002 Free Software Foundation, Inc.
+ 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#define DMODE (L_16)
#define DSYMMODE (Hmode ? L_24 : L_16)
-int bsize = L_8; /* default branch displacement */
+int bsize = L_8; /* Default branch displacement. */
+
+struct h8_instruction
+{
+ int length;
+ int noperands;
+ int idx;
+ int size;
+ const struct h8_opcode *opcode;
+};
+
+struct h8_instruction *h8_instructions;
void
h8300hmode (arg)
void
md_begin ()
{
- struct h8_opcode *opcode;
+ unsigned int nopcodes;
+ const struct h8_opcode *p;
+ struct h8_instruction *pi;
char prev_buffer[100];
int idx = 0;
opcode_hash_control = hash_new ();
prev_buffer[0] = 0;
- for (opcode = h8_opcodes; opcode->name; opcode++)
+ nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode);
+
+ h8_instructions = (struct h8_instruction *)
+ xmalloc (nopcodes * sizeof (struct h8_instruction));
+
+ for (p = h8_opcodes, pi = h8_instructions; p->name; p++, pi++)
{
/* Strip off any . part when inserting the opcode and only enter
unique codes into the hash table. */
- char *src = opcode->name;
+ char *src = p->name;
unsigned int len = strlen (src);
char *dst = malloc (len + 1);
char *buffer = dst;
- opcode->size = 0;
+ pi->size = 0;
while (*src)
{
if (*src == '.')
{
src++;
- opcode->size = *src;
+ pi->size = *src;
break;
}
*dst++ = *src++;
*dst++ = 0;
if (strcmp (buffer, prev_buffer))
{
- hash_insert (opcode_hash_control, buffer, (char *) opcode);
+ hash_insert (opcode_hash_control, buffer, (char *) pi);
strcpy (prev_buffer, buffer);
idx++;
}
- opcode->idx = idx;
+ pi->idx = idx;
/* Find the number of operands. */
- opcode->noperands = 0;
- while (opcode->args.nib[opcode->noperands] != E)
- opcode->noperands++;
+ pi->noperands = 0;
+ while (p->args.nib[pi->noperands] != E)
+ pi->noperands++;
/* Find the length of the opcode in bytes. */
- opcode->length = 0;
- while (opcode->data.nib[opcode->length * 2] != E)
- opcode->length++;
+ pi->length = 0;
+ while (p->data.nib[pi->length * 2] != E)
+ pi->length++;
+
+ pi->opcode = p;
}
+ /* Add entry for the NULL vector terminator. */
+ pi->length = 0;
+ pi->noperands = 0;
+ pi->idx = 0;
+ pi->size = 0;
+ pi->opcode = p;
+
linkrelax = 1;
}
expressionS exp;
};
-static void clever_message PARAMS ((struct h8_opcode *, struct h8_op *));
-static void build_bytes PARAMS ((struct h8_opcode *, struct h8_op *));
+static void clever_message PARAMS ((const struct h8_instruction *, struct h8_op *));
+static void build_bytes PARAMS ((const struct h8_instruction *, struct h8_op *));
static void do_a_fix_imm PARAMS ((int, struct h8_op *, int));
static void check_operand PARAMS ((struct h8_op *, unsigned int, char *));
-static struct h8_opcode * get_specific PARAMS ((struct h8_opcode *, struct h8_op *, int));
+static const struct h8_instruction * get_specific PARAMS ((const struct h8_instruction *, struct h8_op *, int));
static char * get_operands PARAMS ((unsigned, char *, struct h8_op *));
static void get_operand PARAMS ((char **, struct h8_op *, unsigned, int));
static char * skip_colonthing PARAMS ((char *, expressionS *, int *));
addressing modes, return the opcode which matches the opcodes
provided. */
-static struct h8_opcode *
-get_specific (opcode, operands, size)
- struct h8_opcode *opcode;
+static const struct h8_instruction *
+get_specific (instruction, operands, size)
+ const struct h8_instruction *instruction;
struct h8_op *operands;
int size;
{
- struct h8_opcode *this_try = opcode;
+ const struct h8_instruction *this_try = instruction;
int found = 0;
- int this_index = opcode->idx;
+ int this_index = instruction->idx;
/* There's only one ldm/stm and it's easier to just
get out quick for them. */
- if (strcmp (opcode->name, "stm.l") == 0
- || strcmp (opcode->name, "ldm.l") == 0)
+ if (strcmp (instruction->opcode->name, "stm.l") == 0
+ || strcmp (instruction->opcode->name, "ldm.l") == 0)
return this_try;
- while (this_index == opcode->idx && !found)
+ while (this_index == instruction->idx && !found)
{
found = 1;
- this_try = opcode++;
+ this_try = instruction++;
if (this_try->noperands == 0)
{
int this_size;
- this_size = this_try->how & SN;
+ this_size = this_try->opcode->how & SN;
if (this_size != size && (this_size != SB || size != SN))
found = 0;
}
for (i = 0; i < this_try->noperands && found; i++)
{
- op_type op = this_try->args.nib[i];
+ op_type op = this_try->opcode->args.nib[i];
int x = operands[i].mode;
if ((op & (DISP | REG)) == (DISP | REG)
static void
build_bytes (this_try, operand)
- struct h8_opcode *this_try;
+ const struct h8_instruction *this_try;
struct h8_op *operand;
{
int i;
char *output = frag_more (this_try->length);
- op_type *nibble_ptr = this_try->data.nib;
+ op_type *nibble_ptr = this_try->opcode->data.nib;
op_type c;
unsigned int nibble_count = 0;
int absat = 0;
char asnibbles[30];
char *p = asnibbles;
- if (!(this_try->inbase || Hmode))
+ if (!(this_try->opcode->inbase || Hmode))
as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"),
- this_try->name);
+ this_try->opcode->name);
while (*nibble_ptr != E)
{
/* Disgusting. Why, oh why didn't someone ask us for advice
on the assembler format. */
- if (strcmp (this_try->name, "stm.l") == 0
- || strcmp (this_try->name, "ldm.l") == 0)
+ if (strcmp (this_try->opcode->name, "stm.l") == 0
+ || strcmp (this_try->opcode->name, "ldm.l") == 0)
{
int high, low;
- high = (operand[this_try->name[0] == 'l' ? 1 : 0].reg >> 8) & 0xf;
- low = operand[this_try->name[0] == 'l' ? 1 : 0].reg & 0xf;
+ high = (operand[this_try->opcode->name[0] == 'l' ? 1 : 0].reg >> 8) & 0xf;
+ low = operand[this_try->opcode->name[0] == 'l' ? 1 : 0].reg & 0xf;
asnibbles[2] = high - low;
- asnibbles[7] = (this_try->name[0] == 'l') ? high : low;
+ asnibbles[7] = (this_try->opcode->name[0] == 'l') ? high : low;
}
for (i = 0; i < this_try->length; i++)
/* Note if this is a movb instruction -- there's a special relaxation
which only applies to them. */
- if (strcmp (this_try->name, "mov.b") == 0)
+ if (strcmp (this_try->opcode->name, "mov.b") == 0)
movb = 1;
/* Output any fixes. */
detect errors. */
static void
-clever_message (opcode, operand)
- struct h8_opcode *opcode;
+clever_message (instruction, operand)
+ const struct h8_instruction *instruction;
struct h8_op *operand;
{
/* Find out if there was more than one possible opcode. */
- if ((opcode + 1)->idx != opcode->idx)
+ if ((instruction + 1)->idx != instruction->idx)
{
int argn;
/* Only one opcode of this flavour, try to guess which operand
didn't match. */
- for (argn = 0; argn < opcode->noperands; argn++)
+ for (argn = 0; argn < instruction->noperands; argn++)
{
- switch (opcode->args.nib[argn])
+ switch (instruction->opcode->args.nib[argn])
{
case RD16:
if (operand[argn].mode != RD16)
char *op_start;
char *op_end;
struct h8_op operand[2];
- struct h8_opcode *opcode;
- struct h8_opcode *prev_opcode;
+ const struct h8_instruction *instruction;
+ const struct h8_instruction *prev_instruction;
char *dot = 0;
char c;
*op_end = 0;
- opcode = (struct h8_opcode *) hash_find (opcode_hash_control,
- op_start);
+ instruction = (const struct h8_instruction *)
+ hash_find (opcode_hash_control, op_start);
- if (opcode == NULL)
+ if (instruction == NULL)
{
as_bad (_("unknown opcode"));
return;
/* 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);
+ (void) get_operands (instruction->noperands, op_end, operand);
*op_end = c;
- prev_opcode = opcode;
+ prev_instruction = instruction;
size = SN;
if (dot)
break;
}
}
- opcode = get_specific (opcode, operand, size);
+ instruction = get_specific (instruction, operand, size);
- if (opcode == 0)
+ if (instruction == 0)
{
/* Couldn't find an opcode which matched the operands. */
char *where = frag_more (2);
where[0] = 0x0;
where[1] = 0x0;
- clever_message (prev_opcode, operand);
+ clever_message (prev_instruction, operand);
return;
}
- if (opcode->size && dot)
+ if (instruction->size && dot)
{
- if (opcode->size != *dot)
+ if (instruction->size != *dot)
{
as_warn (_("mismatch between opcode size and operand size"));
}
}
- build_bytes (opcode, operand);
+ build_bytes (instruction, operand);
}
#ifndef BFD_ASSEMBLER
segT seg ATTRIBUTE_UNUSED;
{
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
- long val = * (long *) valP;
+ long val = *valP;
switch (fixP->fx_size)
{
projects / deliverable / binutils-gdb.git / blobdiff