binutils-gdb/gas/config/tc-z8k.c

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1999-05-03 09:29:11 +02:00
/* tc-z8k.c -- Assemble code for the Zilog Z800n
Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002
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Free Software Foundation, Inc.
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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. */
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/* Written By Steve Chamberlain <sac@cygnus.com>. */
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#define DEFINE_TABLE
#include <stdio.h>
#include "as.h"
#include "bfd.h"
#include "safe-ctype.h"
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#include "opcodes/z8k-opc.h"
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const char comment_chars[] = "!";
const char line_comment_chars[] = "#";
const char line_separator_chars[] = ";";
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extern int machine;
extern int coff_flags;
int segmented_mode;
const int md_reloc_size;
void cons ();
void
s_segm ()
{
segmented_mode = 1;
machine = bfd_mach_z8001;
coff_flags = F_Z8001;
}
void
s_unseg ()
{
segmented_mode = 0;
machine = bfd_mach_z8002;
coff_flags = F_Z8002;
}
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static void
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even ()
{
frag_align (1, 0, 0);
record_alignment (now_seg, 1);
}
void obj_coff_section ();
int
tohex (c)
int c;
{
if (ISDIGIT (c))
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return c - '0';
if (ISLOWER (c))
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return c - 'a' + 10;
return c - 'A' + 10;
}
void
sval ()
{
SKIP_WHITESPACE ();
if (*input_line_pointer == '\'')
{
int c;
input_line_pointer++;
c = *input_line_pointer++;
while (c != '\'')
{
if (c == '%')
{
c = (tohex (input_line_pointer[0]) << 4)
| tohex (input_line_pointer[1]);
input_line_pointer += 2;
}
FRAG_APPEND_1_CHAR (c);
c = *input_line_pointer++;
}
demand_empty_rest_of_line ();
}
}
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/* This table describes all the machine specific pseudo-ops the assembler
has to support. The fields are:
pseudo-op name without dot
function to call to execute this pseudo-op
Integer arg to pass to the function
*/
const pseudo_typeS md_pseudo_table[] = {
{"int" , cons , 2},
{"data.b" , cons , 1},
{"data.w" , cons , 2},
{"data.l" , cons , 4},
{"form" , listing_psize , 0},
{"heading", listing_title , 0},
{"import" , s_ignore , 0},
{"page" , listing_eject , 0},
{"program", s_ignore , 0},
{"z8001" , s_segm , 0},
{"z8002" , s_unseg , 0},
{"segm" , s_segm , 0},
{"unsegm" , s_unseg , 0},
{"unseg" , s_unseg , 0},
{"name" , s_app_file , 0},
{"global" , s_globl , 0},
{"wval" , cons , 2},
{"lval" , cons , 4},
{"bval" , cons , 1},
{"sval" , sval , 0},
{"rsect" , obj_coff_section, 0},
{"sect" , obj_coff_section, 0},
{"block" , s_space , 0},
{"even" , even , 0},
{0 , 0 , 0}
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};
const char EXP_CHARS[] = "eE";
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/* Chars that mean this number is a floating point constant.
As in 0f12.456
or 0d1.2345e12 */
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const char FLT_CHARS[] = "rRsSfFdDxXpP";
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/* Opcode mnemonics. */
static struct hash_control *opcode_hash_control;
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void
md_begin ()
{
opcode_entry_type *opcode;
char *prev_name = "";
int idx = 0;
opcode_hash_control = hash_new ();
for (opcode = z8k_table; opcode->name; opcode++)
{
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/* Only enter unique codes into the table. */
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if (strcmp (opcode->name, prev_name))
{
hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
idx++;
}
opcode->idx = idx;
prev_name = opcode->name;
}
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/* Default to z8002. */
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s_unseg ();
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/* Insert the pseudo ops, too. */
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for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
{
opcode_entry_type *fake_opcode;
fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
fake_opcode->name = md_pseudo_table[idx].poc_name;
fake_opcode->func = (void *) (md_pseudo_table + idx);
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fake_opcode->opcode = 250;
hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
}
linkrelax = 1;
}
struct z8k_exp {
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char *e_beg;
char *e_end;
expressionS e_exp;
};
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typedef struct z8k_op {
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/* 'b','w','r','q'. */
char regsize;
/* 0 .. 15. */
unsigned int reg;
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int mode;
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/* Any other register associated with the mode. */
unsigned int x_reg;
/* Any expression. */
expressionS exp;
} op_type;
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static expressionS *da_operand;
static expressionS *imm_operand;
int reg[16];
int the_cc;
int the_ctrl;
int the_flags;
int the_interrupt;
char *
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whatreg (reg, src)
int *reg;
char *src;
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{
if (ISDIGIT (src[1]))
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{
*reg = (src[0] - '0') * 10 + src[1] - '0';
return src + 2;
}
else
{
*reg = (src[0] - '0');
return src + 1;
}
}
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/* Parse operands
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rh0-rh7, rl0-rl7
r0-r15
rr0-rr14
rq0--rq12
WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
r0l,r0h,..r7l,r7h
@WREG
@WREG+
@-WREG
#const
*/
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/* Try to parse a reg name. Return a pointer to the first character
in SRC after the reg name. */
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char *
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parse_reg (src, mode, reg)
char *src;
int *mode;
unsigned int *reg;
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{
char *res = 0;
char regno;
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if (src[0] == 's' && src[1] == 'p' && (src[2] == 0 || src[2] == ','))
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{
if (segmented_mode)
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{
*mode = CLASS_REG_LONG;
*reg = 14;
}
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else
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{
*mode = CLASS_REG_WORD;
*reg = 15;
}
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return src + 2;
}
if (src[0] == 'r')
{
if (src[1] == 'r')
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{
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if (src[2] < '0' || src[2] > '9')
return res; /* Assume no register name but a label starting with 'rr'. */
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*mode = CLASS_REG_LONG;
res = whatreg (reg, src + 2);
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regno = *reg;
if (regno > 14)
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as_warn (_("register rr%d, out of range."), regno);
}
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else if (src[1] == 'h')
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{
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if (src[2] < '0' || src[2] > '9')
return res; /* Assume no register name but a label starting with 'rh'. */
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*mode = CLASS_REG_BYTE;
res = whatreg (reg, src + 2);
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regno = *reg;
if (regno > 7)
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as_warn (_("register rh%d, out of range."), regno);
}
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else if (src[1] == 'l')
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{
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if (src[2] < '0' || src[2] > '9')
return res; /* Assume no register name but a label starting with 'rl'. */
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*mode = CLASS_REG_BYTE;
res = whatreg (reg, src + 2);
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regno = *reg;
if (regno > 7)
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as_warn (_("register rl%d, out of range."), regno);
*reg += 8;
}
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else if (src[1] == 'q')
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{
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if (src[2] < '0' || src[2] > '9')
return res; /* Assume no register name but a label starting with 'rq'. */
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*mode = CLASS_REG_QUAD;
res = whatreg (reg, src + 2);
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regno = *reg;
if (regno > 12)
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as_warn (_("register rq%d, out of range."), regno);
}
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else
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{
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if (src[1] < '0' || src[1] > '9')
return res; /* Assume no register name but a label starting with 'r'. */
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*mode = CLASS_REG_WORD;
res = whatreg (reg, src + 1);
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regno = *reg;
if (regno > 15)
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as_warn (_("register r%d, out of range."), regno);
}
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}
return res;
}
char *
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parse_exp (s, op)
char *s;
expressionS *op;
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{
char *save = input_line_pointer;
char *new;
input_line_pointer = s;
expression (op);
if (op->X_op == O_absent)
as_bad (_("missing operand"));
new = input_line_pointer;
input_line_pointer = save;
return new;
}
/* The many forms of operand:
<rb>
<r>
<rr>
<rq>
@r
#exp
exp
exp(r)
r(#exp)
r(r)
*/
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static char *
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checkfor (ptr, what)
char *ptr;
char what;
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{
if (*ptr == what)
ptr++;
else
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as_bad (_("expected %c"), what);
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return ptr;
}
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/* Make sure the mode supplied is the size of a word. */
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static void
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regword (mode, string)
int mode;
char *string;
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{
int ok;
ok = CLASS_REG_WORD;
if (ok != mode)
{
as_bad (_("register is wrong size for a word %s"), string);
}
}
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/* Make sure the mode supplied is the size of an address. */
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static void
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regaddr (mode, string)
int mode;
char *string;
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{
int ok;
ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
if (ok != mode)
{
as_bad (_("register is wrong size for address %s"), string);
}
}
struct ctrl_names {
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int value;
char *name;
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};
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struct ctrl_names ctrl_table[] = {
{ 0x2, "fcw" },
{ 0x3, "refresh" },
{ 0x4, "psapseg" },
{ 0x5, "psapoff" },
{ 0x5, "psap" },
{ 0x6, "nspseg" },
{ 0x7, "nspoff" },
{ 0x7, "nsp" },
{ 0 , 0 }
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};
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static void
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get_ctrl_operand (ptr, mode, dst)
char **ptr;
struct z8k_op *mode;
unsigned int dst ATTRIBUTE_UNUSED;
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{
char *src = *ptr;
int i;
while (*src == ' ')
src++;
mode->mode = CLASS_CTRL;
for (i = 0; ctrl_table[i].name; i++)
{
int j;
for (j = 0; ctrl_table[i].name[j]; j++)
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{
if (ctrl_table[i].name[j] != src[j])
goto fail;
}
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the_ctrl = ctrl_table[i].value;
*ptr = src + j;
return;
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fail:
;
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}
the_ctrl = 0;
return;
}
struct flag_names {
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int value;
char *name;
};
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struct flag_names flag_table[] = {
{ 0x1, "p" },
{ 0x1, "v" },
{ 0x2, "s" },
{ 0x4, "z" },
{ 0x8, "c" },
{ 0x0, "+" },
{ 0, 0 }
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};
static void
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get_flags_operand (ptr, mode, dst)
char **ptr;
struct z8k_op *mode;
unsigned int dst ATTRIBUTE_UNUSED;
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{
char *src = *ptr;
int i;
int j;
while (*src == ' ')
src++;
mode->mode = CLASS_FLAGS;
the_flags = 0;
for (j = 0; j <= 9; j++)
{
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if (!src[j])
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goto done;
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for (i = 0; flag_table[i].name; i++)
{
if (flag_table[i].name[0] == src[j])
{
the_flags = the_flags | flag_table[i].value;
goto match;
}
}
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goto done;
match:
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;
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}
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done:
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*ptr = src + j;
return;
}
struct interrupt_names {
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int value;
char *name;
};
struct interrupt_names intr_table[] = {
{ 0x1, "nvi" },
{ 0x2, "vi" },
{ 0x3, "both" },
{ 0x3, "all" },
{ 0, 0 }
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};
static void
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get_interrupt_operand (ptr, mode, dst)
char **ptr;
struct z8k_op *mode;
unsigned int dst ATTRIBUTE_UNUSED;
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{
char *src = *ptr;
int i;
while (*src == ' ')
src++;
mode->mode = CLASS_IMM;
for (i = 0; intr_table[i].name; i++)
{
int j;
for (j = 0; intr_table[i].name[j]; j++)
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{
if (intr_table[i].name[j] != src[j])
goto fail;
}
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the_interrupt = intr_table[i].value;
*ptr = src + j;
return;
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fail:
;
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}
the_interrupt = 0x0;
return;
}
struct cc_names {
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int value;
char *name;
};
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struct cc_names table[] = {
{ 0x0, "f" },
{ 0x1, "lt" },
{ 0x2, "le" },
{ 0x3, "ule" },
{ 0x4, "ov" },
{ 0x4, "pe" },
{ 0x5, "mi" },
{ 0x6, "eq" },
{ 0x6, "z" },
{ 0x7, "c" },
{ 0x7, "ult" },
{ 0x8, "t" },
{ 0x9, "ge" },
{ 0xa, "gt" },
{ 0xb, "ugt" },
{ 0xc, "nov" },
{ 0xc, "po" },
{ 0xd, "pl" },
{ 0xe, "ne" },
{ 0xe, "nz" },
{ 0xf, "nc" },
{ 0xf, "uge" },
{ 0 , 0 }
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};
static void
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get_cc_operand (ptr, mode, dst)
char **ptr;
struct z8k_op *mode;
unsigned int dst ATTRIBUTE_UNUSED;
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{
char *src = *ptr;
int i;
while (*src == ' ')
src++;
mode->mode = CLASS_CC;
for (i = 0; table[i].name; i++)
{
int j;
for (j = 0; table[i].name[j]; j++)
{
if (table[i].name[j] != src[j])
goto fail;
}
the_cc = table[i].value;
*ptr = src + j;
return;
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fail:
;
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}
the_cc = 0x8;
}
static void
get_operand (ptr, mode, dst)
char **ptr;
struct z8k_op *mode;
unsigned int dst ATTRIBUTE_UNUSED;
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{
char *src = *ptr;
char *end;
mode->mode = 0;
while (*src == ' ')
src++;
if (*src == '#')
{
mode->mode = CLASS_IMM;
imm_operand = &(mode->exp);
src = parse_exp (src + 1, &(mode->exp));
}
else if (*src == '@')
{
int d;
mode->mode = CLASS_IR;
src = parse_reg (src + 1, &d, &mode->reg);
}
else
{
int regn;
end = parse_reg (src, &mode->mode, &regn);
if (end)
{
int nw, nr;
src = end;
if (*src == '(')
{
src++;
end = parse_reg (src, &nw, &nr);
if (end)
{
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/* Got Ra(Rb). */
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src = end;
if (*src != ')')
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as_bad (_("Missing ) in ra(rb)"));
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else
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src++;
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regaddr (mode->mode, "ra(rb) ra");
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#if 0
regword (mode->mode, "ra(rb) rb");
#endif
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mode->mode = CLASS_BX;
mode->reg = regn;
mode->x_reg = nr;
reg[ARG_RX] = nr;
}
else
{
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/* Got Ra(disp). */
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if (*src == '#')
src++;
src = parse_exp (src, &(mode->exp));
src = checkfor (src, ')');
mode->mode = CLASS_BA;
mode->reg = regn;
mode->x_reg = 0;
imm_operand = &(mode->exp);
}
}
else
{
mode->reg = regn;
mode->x_reg = 0;
}
}
else
{
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/* No initial reg. */
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src = parse_exp (src, &(mode->exp));
if (*src == '(')
{
src++;
end = parse_reg (src, &(mode->mode), &regn);
regword (mode->mode, "addr(Ra) ra");
mode->mode = CLASS_X;
mode->reg = regn;
mode->x_reg = 0;
da_operand = &(mode->exp);
src = checkfor (end, ')');
}
else
{
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/* Just an address. */
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mode->mode = CLASS_DA;
mode->reg = 0;
mode->x_reg = 0;
da_operand = &(mode->exp);
}
}
}
*ptr = src;
}
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static char *
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get_operands (opcode, op_end, operand)
opcode_entry_type *opcode;
char *op_end;
op_type *operand;
{
char *ptr = op_end;
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char *savptr;
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switch (opcode->noperands)
{
case 0:
operand[0].mode = 0;
operand[1].mode = 0;
break;
case 1:
ptr++;
if (opcode->arg_info[0] == CLASS_CC)
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{
get_cc_operand (&ptr, operand + 0, 0);
}
1999-05-03 09:29:11 +02:00
else if (opcode->arg_info[0] == CLASS_FLAGS)
2000-07-27 06:05:05 +02:00
{
get_flags_operand (&ptr, operand + 0, 0);
}
else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
{
get_interrupt_operand (&ptr, operand + 0, 0);
}
1999-05-03 09:29:11 +02:00
else
2000-07-27 06:05:05 +02:00
{
get_operand (&ptr, operand + 0, 0);
}
1999-05-03 09:29:11 +02:00
operand[1].mode = 0;
break;
case 2:
ptr++;
savptr = ptr;
if (opcode->arg_info[0] == CLASS_CC)
2000-07-27 06:05:05 +02:00
{
get_cc_operand (&ptr, operand + 0, 0);
}
1999-05-03 09:29:11 +02:00
else if (opcode->arg_info[0] == CLASS_CTRL)
2000-07-27 06:05:05 +02:00
{
get_ctrl_operand (&ptr, operand + 0, 0);
if (the_ctrl == 0)
{
ptr = savptr;
get_operand (&ptr, operand + 0, 0);
if (ptr == 0)
return NULL;
2000-07-27 06:05:05 +02:00
if (*ptr == ',')
ptr++;
get_ctrl_operand (&ptr, operand + 1, 1);
return ptr;
}
}
1999-05-03 09:29:11 +02:00
else
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{
get_operand (&ptr, operand + 0, 0);
}
1999-05-03 09:29:11 +02:00
if (ptr == 0)
return NULL;
1999-05-03 09:29:11 +02:00
if (*ptr == ',')
2000-07-27 06:05:05 +02:00
ptr++;
1999-05-03 09:29:11 +02:00
get_operand (&ptr, operand + 1, 1);
break;
case 3:
ptr++;
get_operand (&ptr, operand + 0, 0);
if (*ptr == ',')
ptr++;
get_operand (&ptr, operand + 1, 1);
if (*ptr == ',')
ptr++;
get_operand (&ptr, operand + 2, 2);
break;
case 4:
ptr++;
get_operand (&ptr, operand + 0, 0);
if (*ptr == ',')
ptr++;
get_operand (&ptr, operand + 1, 1);
if (*ptr == ',')
ptr++;
get_operand (&ptr, operand + 2, 2);
if (*ptr == ',')
ptr++;
get_cc_operand (&ptr, operand + 3, 3);
break;
2000-07-27 06:05:05 +02:00
1999-05-03 09:29:11 +02:00
default:
abort ();
}
return ptr;
}
/* Passed a pointer to a list of opcodes which use different
2000-07-27 06:05:05 +02:00
addressing modes. Return the opcode which matches the opcodes
provided. */
1999-05-03 09:29:11 +02:00
2000-07-27 06:05:05 +02:00
static opcode_entry_type *
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get_specific (opcode, operands)
opcode_entry_type *opcode;
op_type *operands;
1999-05-03 09:29:11 +02:00
{
opcode_entry_type *this_try = opcode;
int found = 0;
unsigned int noperands = opcode->noperands;
int this_index = opcode->idx;
1999-05-03 09:29:11 +02:00
while (this_index == opcode->idx && !found)
{
unsigned int i;
this_try = opcode++;
for (i = 0; i < noperands; i++)
{
unsigned int mode = operands[i].mode;
1999-05-03 09:29:11 +02:00
if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
{
2000-07-27 06:05:05 +02:00
/* It could be an pc rel operand, if this is a da mode
and we like disps, then insert it. */
1999-05-03 09:29:11 +02:00
if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
{
2000-07-27 06:05:05 +02:00
/* This is the case. */
1999-05-03 09:29:11 +02:00
operands[i].mode = CLASS_DISP;
}
else if (mode == CLASS_BA && this_try->arg_info[i])
{
2000-07-27 06:05:05 +02:00
/* Can't think of a way to turn what we've been
given into something that's OK. */
1999-05-03 09:29:11 +02:00
goto fail;
}
else if (this_try->arg_info[i] & CLASS_PR)
{
if (mode == CLASS_REG_LONG && segmented_mode)
{
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/* OK. */
1999-05-03 09:29:11 +02:00
}
else if (mode == CLASS_REG_WORD && !segmented_mode)
{
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/* OK. */
1999-05-03 09:29:11 +02:00
}
else
goto fail;
}
else
goto fail;
}
switch (mode & CLASS_MASK)
{
default:
break;
case CLASS_X:
case CLASS_IR:
case CLASS_BA:
case CLASS_BX:
case CLASS_DISP:
case CLASS_REG:
case CLASS_REG_WORD:
case CLASS_REG_BYTE:
case CLASS_REG_QUAD:
case CLASS_REG_LONG:
case CLASS_REGN0:
reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
break;
}
}
found = 1;
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fail:
;
1999-05-03 09:29:11 +02:00
}
if (found)
return this_try;
else
return 0;
}
#if 0 /* Not used. */
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static void
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check_operand (operand, width, string)
struct z8k_op *operand;
unsigned int width;
char *string;
1999-05-03 09:29:11 +02:00
{
if (operand->exp.X_add_symbol == 0
&& operand->exp.X_op_symbol == 0)
{
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/* 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. */
1999-05-03 09:29:11 +02:00
if ((operand->exp.X_add_number & ~width) != 0 &&
(operand->exp.X_add_number | width) != (~0))
{
2000-07-27 06:05:05 +02:00
as_warn (_("operand %s0x%x out of range."),
string, operand->exp.X_add_number);
1999-05-03 09:29:11 +02:00
}
}
}
#endif
1999-05-03 09:29:11 +02:00
static char buffer[20];
static void
2000-06-24 13:51:53 +02:00
newfix (ptr, type, operand)
int ptr;
int type;
expressionS *operand;
1999-05-03 09:29:11 +02:00
{
if (operand->X_add_symbol
|| operand->X_op_symbol
|| operand->X_add_number)
{
fix_new_exp (frag_now,
ptr,
1,
operand,
0,
type);
}
}
static char *
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apply_fix (ptr, type, operand, size)
char *ptr;
int type;
expressionS *operand;
int size;
1999-05-03 09:29:11 +02:00
{
int n = operand->X_add_number;
newfix ((ptr - buffer) / 2, type, operand);
switch (size)
{
case 8: /* 8 nibbles == 32 bits. */
1999-05-03 09:29:11 +02:00
*ptr++ = n >> 28;
*ptr++ = n >> 24;
*ptr++ = n >> 20;
*ptr++ = n >> 16;
case 4: /* 4 nibbles == 16 bits. */
1999-05-03 09:29:11 +02:00
*ptr++ = n >> 12;
*ptr++ = n >> 8;
case 2:
*ptr++ = n >> 4;
case 1:
*ptr++ = n >> 0;
break;
}
return ptr;
}
2000-07-27 06:05:05 +02:00
/* Now we know what sort of opcodes it is. Let's build the bytes. */
1999-05-03 09:29:11 +02:00
#define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
1999-05-03 09:29:11 +02:00
static void
build_bytes (this_try, operand)
2000-07-27 06:05:05 +02:00
opcode_entry_type *this_try;
struct z8k_op *operand ATTRIBUTE_UNUSED;
1999-05-03 09:29:11 +02:00
{
char *output_ptr = buffer;
int c;
int nib;
int nibble;
unsigned int *class_ptr;
frag_wane (frag_now);
frag_new (0);
memset (buffer, 20, 0);
class_ptr = this_try->byte_info;
for (nibble = 0; (c = *class_ptr++); nibble++)
1999-05-03 09:29:11 +02:00
{
switch (c & CLASS_MASK)
{
default:
abort ();
2000-07-27 06:05:05 +02:00
1999-05-03 09:29:11 +02:00
case CLASS_ADDRESS:
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/* Direct address, we don't cope with the SS mode right now. */
1999-05-03 09:29:11 +02:00
if (segmented_mode)
{
/* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
1999-05-03 09:29:11 +02:00
output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8);
}
else
{
output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
}
da_operand = 0;
break;
case CLASS_DISP8:
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/* pc rel 8 bit */
1999-05-03 09:29:11 +02:00
output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2);
da_operand = 0;
break;
case CLASS_0DISP7:
2000-07-27 06:05:05 +02:00
/* pc rel 7 bit */
1999-05-03 09:29:11 +02:00
*output_ptr = 0;
output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
da_operand = 0;
break;
case CLASS_1DISP7:
2000-07-27 06:05:05 +02:00
/* pc rel 7 bit */
1999-05-03 09:29:11 +02:00
*output_ptr = 0x80;
output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2);
2000-07-27 06:05:05 +02:00
output_ptr[-2] = 0x8;
1999-05-03 09:29:11 +02:00
da_operand = 0;
break;
case CLASS_BIT_1OR2:
*output_ptr = c & 0xf;
if (imm_operand)
{
if (imm_operand->X_add_number == 2)
2000-07-27 06:05:05 +02:00
*output_ptr |= 2;
1999-05-03 09:29:11 +02:00
else if (imm_operand->X_add_number != 1)
2000-07-27 06:05:05 +02:00
as_bad (_("immediate must be 1 or 2"));
1999-05-03 09:29:11 +02:00
}
else
2000-07-27 06:05:05 +02:00
as_bad (_("immediate 1 or 2 expected"));
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output_ptr++;
break;
case CLASS_CC:
*output_ptr++ = the_cc;
break;
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case CLASS_0CCC:
*output_ptr++ = the_ctrl;
break;
case CLASS_1CCC:
*output_ptr++ = the_ctrl | 0x8;
break;
case CLASS_00II:
*output_ptr++ = (~the_interrupt & 0x3);
break;
case CLASS_01II:
*output_ptr++ = (~the_interrupt & 0x3) | 0x4;
break;
case CLASS_FLAGS:
*output_ptr++ = the_flags;
break;
case CLASS_IGNORE:
1999-05-03 09:29:11 +02:00
case CLASS_BIT:
*output_ptr++ = c & 0xf;
break;
case CLASS_REGN0:
if (reg[c & 0xf] == 0)
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as_bad (_("can't use R0 here"));
/* Fall through. */
1999-05-03 09:29:11 +02:00
case CLASS_REG:
case CLASS_REG_BYTE:
case CLASS_REG_WORD:
case CLASS_REG_LONG:
case CLASS_REG_QUAD:
2000-07-27 06:05:05 +02:00
/* Insert bit mattern of right reg. */
1999-05-03 09:29:11 +02:00
*output_ptr++ = reg[c & 0xf];
break;
case CLASS_DISP:
2001-04-24 17:22:25 +02:00
switch (c & ARG_MASK)
{
case ARG_DISP12:
output_ptr = apply_fix (output_ptr, R_CALLR, da_operand, 4);
break;
case ARG_DISP16:
output_ptr = apply_fix (output_ptr, R_REL16, da_operand, 4);
break;
default:
output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
}
1999-05-03 09:29:11 +02:00
da_operand = 0;
break;
case CLASS_IMM:
{
nib = 0;
switch (c & ARG_MASK)
{
case ARG_NIM4:
imm_operand->X_add_number = -imm_operand->X_add_number;
/* Drop through. */
1999-05-03 09:29:11 +02:00
case ARG_IMM4:
output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
break;
case ARG_IMM4M1:
imm_operand->X_add_number--;
output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
break;
case ARG_IMMNMINUS1:
imm_operand->X_add_number--;
output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
break;
case ARG_NIM8:
imm_operand->X_add_number = -imm_operand->X_add_number;
case ARG_IMM8:
output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2);
break;
case ARG_IMM16:
output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4);
break;
case ARG_IMM32:
output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8);
break;
default:
abort ();
}
}
}
}
2000-07-27 06:05:05 +02:00
/* Copy from the nibble buffer into the frag. */
1999-05-03 09:29:11 +02:00
{
int length = (output_ptr - buffer) / 2;
char *src = buffer;
char *fragp = frag_more (length);
while (src < output_ptr)
{
*fragp = (src[0] << 4) | src[1];
src += 2;
fragp++;
}
}
}
/* 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 to. */
1999-05-03 09:29:11 +02:00
void
2000-06-24 13:51:53 +02:00
md_assemble (str)
char *str;
1999-05-03 09:29:11 +02:00
{
char c;
1999-05-03 09:29:11 +02:00
char *op_start;
char *op_end;
struct z8k_op operand[3];
opcode_entry_type *opcode;
opcode_entry_type *prev_opcode;
2000-07-27 06:05:05 +02:00
/* Drop leading whitespace. */
1999-05-03 09:29:11 +02:00
while (*str == ' ')
str++;
2000-07-27 06:05:05 +02:00
/* Find the op code end. */
1999-05-03 09:29:11 +02:00
for (op_start = op_end = str;
*op_end != 0 && *op_end != ' ';
op_end++)
2000-07-27 06:05:05 +02:00
;
1999-05-03 09:29:11 +02:00
if (op_end == op_start)
{
as_bad (_("can't find opcode "));
}
c = *op_end;
*op_end = 0;
2000-07-27 06:05:05 +02:00
opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
1999-05-03 09:29:11 +02:00
if (opcode == NULL)
{
as_bad (_("unknown opcode"));
return;
}
if (opcode->opcode == 250)
{
pseudo_typeS *p;
char oc;
char *old = input_line_pointer;
*op_end = c;
/* Was really a pseudo op. */
1999-05-03 09:29:11 +02:00
input_line_pointer = op_end;
oc = *old;
*old = '\n';
while (*input_line_pointer == ' ')
input_line_pointer++;
p = (pseudo_typeS *) (opcode->func);
(p->poc_handler) (p->poc_val);
input_line_pointer = old;
*old = oc;
}
else
{
char *new_input_line_pointer;
new_input_line_pointer = get_operands (opcode, op_end, operand);
if (new_input_line_pointer)
input_line_pointer = new_input_line_pointer;
1999-05-03 09:29:11 +02:00
prev_opcode = opcode;
opcode = get_specific (opcode, operand);
if (opcode == 0)
{
2000-07-27 06:05:05 +02:00
/* Couldn't find an opcode which matched the operands. */
1999-05-03 09:29:11 +02:00
char *where = frag_more (2);
where[0] = 0x0;
where[1] = 0x0;
as_bad (_("Can't find opcode to match operands"));
return;
}
build_bytes (opcode, operand);
}
}
void
2000-06-24 13:51:53 +02:00
tc_crawl_symbol_chain (headers)
object_headers *headers ATTRIBUTE_UNUSED;
1999-05-03 09:29:11 +02:00
{
printf (_("call to tc_crawl_symbol_chain \n"));
}
symbolS *
2000-06-24 13:51:53 +02:00
md_undefined_symbol (name)
char *name ATTRIBUTE_UNUSED;
1999-05-03 09:29:11 +02:00
{
return 0;
}
void
2000-06-24 13:51:53 +02:00
tc_headers_hook (headers)
object_headers *headers ATTRIBUTE_UNUSED;
1999-05-03 09:29:11 +02:00
{
printf (_("call to tc_headers_hook \n"));
}
2000-07-27 06:05:05 +02:00
/* Various routines to kill one day. */
/* Equal to MAX_PRECISION in atof-ieee.c. */
1999-05-03 09:29:11 +02:00
#define MAX_LITTLENUMS 6
2000-07-27 06:05:05 +02:00
/* 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. */
1999-05-03 09:29:11 +02:00
char *
md_atof (type, litP, sizeP)
char type;
char *litP;
int *sizeP;
{
int prec;
LITTLENUM_TYPE words[MAX_LITTLENUMS];
LITTLENUM_TYPE *wordP;
char *t;
char *atof_ieee ();
switch (type)
{
case 'f':
case 'F':
case 's':
case 'S':
prec = 2;
break;
case 'd':
case 'D':
case 'r':
case 'R':
prec = 4;
break;
case 'x':
case 'X':
prec = 6;
break;
case 'p':
case 'P':
prec = 6;
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--;)
{
md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
litP += sizeof (LITTLENUM_TYPE);
}
return 0;
}
const char *md_shortopts = "z:";
2000-07-27 06:05:05 +02:00
struct option md_longopts[] =
{
{NULL, no_argument, NULL, 0}
};
2000-07-27 06:05:05 +02:00
size_t md_longopts_size = sizeof (md_longopts);
1999-05-03 09:29:11 +02:00
int
md_parse_option (c, arg)
int c;
char *arg;
{
switch (c)
{
case 'z':
if (!strcmp (arg, "8001"))
s_segm ();
else if (!strcmp (arg, "8002"))
s_unseg ();
else
{
as_bad (_("invalid architecture -z%s"), arg);
return 0;
}
break;
default:
return 0;
}
return 1;
}
void
md_show_usage (stream)
FILE *stream;
{
2000-07-27 06:05:05 +02:00
fprintf (stream, _("\
1999-05-03 09:29:11 +02:00
Z8K options:\n\
-z8001 generate segmented code\n\
-z8002 generate unsegmented code\n"));
}
void
tc_aout_fix_to_chars ()
{
printf (_("call to tc_aout_fix_to_chars \n"));
abort ();
}
void
md_convert_frag (headers, seg, fragP)
object_headers *headers ATTRIBUTE_UNUSED;
segT seg ATTRIBUTE_UNUSED;
fragS *fragP ATTRIBUTE_UNUSED;
1999-05-03 09:29:11 +02:00
{
printf (_("call to md_convert_frag \n"));
abort ();
}
valueT
2000-06-24 13:51:53 +02:00
md_section_align (seg, size)
segT seg;
valueT size;
1999-05-03 09:29:11 +02:00
{
2000-07-27 06:05:05 +02:00
return ((size + (1 << section_alignment[(int) seg]) - 1)
& (-1 << section_alignment[(int) seg]));
1999-05-03 09:29:11 +02:00
}
void
md_apply_fix3 (fixP, valP, segment)
1999-05-03 09:29:11 +02:00
fixS *fixP;
valueT * valP;
segT segment ATTRIBUTE_UNUSED;
1999-05-03 09:29:11 +02:00
{
long val = * (long *) valP;
1999-05-03 09:29:11 +02:00
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
switch (fixP->fx_r_type)
{
case R_IMM4L:
buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf);
break;
case R_JR:
*buf++ = val;
2000-07-27 06:05:05 +02:00
#if 0
if (val != 0)
abort ();
#endif
1999-05-03 09:29:11 +02:00
break;
case R_DISP7:
*buf++ += val;
2000-07-27 06:05:05 +02:00
#if 0
if (val != 0)
abort ();
#endif
1999-05-03 09:29:11 +02:00
break;
case R_IMM8:
buf[0] += val;
break;
case R_IMM16:
*buf++ = (val >> 8);
*buf++ = val;
break;
case R_IMM32:
*buf++ = (val >> 24);
*buf++ = (val >> 16);
*buf++ = (val >> 8);
*buf++ = val;
break;
#if 0
case R_DA | R_SEG:
*buf++ = (val >> 16);
*buf++ = 0x00;
*buf++ = (val >> 8);
*buf++ = val;
break;
#endif
case 0:
md_number_to_chars (buf, val, fixP->fx_size);
break;
default:
abort ();
}
if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
fixP->fx_done = 1;
1999-05-03 09:29:11 +02:00
}
int
md_estimate_size_before_relax (fragP, segment_type)
register fragS *fragP ATTRIBUTE_UNUSED;
register segT segment_type ATTRIBUTE_UNUSED;
1999-05-03 09:29:11 +02:00
{
printf (_("call tomd_estimate_size_before_relax \n"));
abort ();
}
2000-07-27 06:05:05 +02:00
/* Put number into target byte order. */
1999-05-03 09:29:11 +02:00
void
2000-06-24 13:51:53 +02:00
md_number_to_chars (ptr, use, nbytes)
char *ptr;
valueT use;
int nbytes;
1999-05-03 09:29:11 +02:00
{
number_to_chars_bigendian (ptr, use, nbytes);
}
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long
md_pcrel_from (fixP)
fixS *fixP ATTRIBUTE_UNUSED;
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{
abort ();
}
void
tc_coff_symbol_emit_hook (s)
symbolS *s ATTRIBUTE_UNUSED;
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{
}
void
tc_reloc_mangle (fix_ptr, intr, base)
fixS *fix_ptr;
struct internal_reloc *intr;
bfd_vma base;
{
symbolS *symbol_ptr;
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if (fix_ptr->fx_addsy
&& fix_ptr->fx_subsy)
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{
symbolS *add = fix_ptr->fx_addsy;
symbolS *sub = fix_ptr->fx_subsy;
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if (S_GET_SEGMENT (add) != S_GET_SEGMENT (sub))
as_bad (_("Can't subtract symbols in different sections %s %s"),
S_GET_NAME (add), S_GET_NAME (sub));
else
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{
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int diff = S_GET_VALUE (add) - S_GET_VALUE (sub);
fix_ptr->fx_addsy = 0;
fix_ptr->fx_subsy = 0;
fix_ptr->fx_offset += diff;
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}
}
symbol_ptr = fix_ptr->fx_addsy;
/* If this relocation is attached to a symbol then it's ok
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to output it. */
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if (fix_ptr->fx_r_type == 0)
{
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/* cons likes to create reloc32's whatever the size of the reloc. */
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switch (fix_ptr->fx_size)
{
case 2:
intr->r_type = R_IMM16;
break;
case 1:
intr->r_type = R_IMM8;
break;
case 4:
intr->r_type = R_IMM32;
break;
default:
abort ();
}
}
else
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intr->r_type = fix_ptr->fx_r_type;
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intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
intr->r_offset = fix_ptr->fx_offset;
if (symbol_ptr)
intr->r_symndx = symbol_ptr->sy_number;
else
intr->r_symndx = -1;
}