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1447 lines
26 KiB
C
1447 lines
26 KiB
C
/* tc-h8300.c -- Assemble code for the Hitachi H8/300
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Copyright (C) 1991, 1992 Free Software Foundation.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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Written By Steve Chamberlain
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sac@cygnus.com
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*/
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#include <stdio.h>
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#include "as.h"
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#include "bfd.h"
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#define DEFINE_TABLE
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#define h8_opcodes ops
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#include "opcode/h8300.h"
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#include <ctype.h>
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const char comment_chars[] =
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{';', 0};
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const char line_separator_chars[] =
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{'$', 0};
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const char line_comment_chars[] = "#";
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/* This table describes all the machine specific pseudo-ops the assembler
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has to support. The fields are:
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pseudo-op name without dot
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function to call to execute this pseudo-op
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Integer arg to pass to the function
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*/
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void cons ();
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int Hmode;
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#define PSIZE (Hmode ? L_32 : L_16)
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#define DMODE (L_16)
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#define DSYMMODE (Hmode ? L_24 : L_16)
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int bsize = L_8; /* default branch displacement */
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void
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h8300hmode ()
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{
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Hmode = 1;
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}
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void
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sbranch (size)
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int size;
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{
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bsize = size;
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}
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const pseudo_typeS md_pseudo_table[] =
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{
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{"h8300h", h8300hmode, 0},
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{"sbranch", sbranch, L_8},
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{"lbranch", sbranch, L_16},
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{"int", cons, 2},
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{"data.b", cons, 1},
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{"data.w", cons, 2},
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{"data.l", cons, 4},
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{"form", listing_psize, 0},
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{"heading", listing_title, 0},
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{"import", s_ignore, 0},
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{"page", listing_eject, 0},
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{"program", s_ignore, 0},
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{0, 0, 0}
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};
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const int md_reloc_size;
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const char EXP_CHARS[] = "eE";
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/* Chars that mean this number is a floating point constant */
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/* As in 0f12.456 */
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/* or 0d1.2345e12 */
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const char FLT_CHARS[] = "rRsSfFdDxXpP";
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const relax_typeS md_relax_table[1];
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static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
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/*
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This function is called once, at assembler startup time. This should
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set up all the tables, etc that the MD part of the assembler needs
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*/
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void
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md_begin ()
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{
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struct h8_opcode *opcode;
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const struct reg_entry *reg;
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char prev_buffer[100];
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int idx = 0;
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opcode_hash_control = hash_new ();
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prev_buffer[0] = 0;
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for (opcode = h8_opcodes; opcode->name; opcode++)
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{
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/* Strip off any . part when inserting the opcode and only enter
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unique codes into the hash table
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*/
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char *src = opcode->name;
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unsigned int len = strlen (src);
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char *dst = malloc (len + 1);
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char *buffer = dst;
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opcode->size = 0;
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while (*src)
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{
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if (*src == '.')
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{
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src++;
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opcode->size = *src;
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break;
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}
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*dst++ = *src++;
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}
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*dst++ = 0;
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if (strcmp (buffer, prev_buffer))
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{
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hash_insert (opcode_hash_control, buffer, (char *) opcode);
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strcpy (prev_buffer, buffer);
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idx++;
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}
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opcode->idx = idx;
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/* Find the number of operands */
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opcode->noperands = 0;
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while (opcode->args.nib[opcode->noperands] != E)
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opcode->noperands++;
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/* Find the length of the opcode in bytes */
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opcode->length = 0;
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while (opcode->data.nib[opcode->length * 2] != E)
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opcode->length++;
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}
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}
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struct h8_exp
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{
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char *e_beg;
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char *e_end;
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expressionS e_exp;
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};
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int dispreg;
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int opsize; /* Set when a register size is seen */
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struct h8_op
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{
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op_type mode;
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unsigned reg;
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expressionS exp;
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};
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/*
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parse operands
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WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
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r0l,r0h,..r7l,r7h
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@WREG
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@WREG+
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@-WREG
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#const
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*/
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/* try and parse a reg name, returns number of chars consumed */
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int
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parse_reg (src, mode, reg, direction)
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char *src;
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op_type *mode;
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unsigned int *reg;
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int direction;
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{
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if (src[0] == 's' && src[1] == 'p')
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{
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*mode = PSIZE | REG | direction;
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*reg = 7;
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return 2;
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}
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if (src[0] == 'c' && src[1] == 'c' && src[2] == 'r')
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{
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*mode = CCR;
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*reg = 0;
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return 3;
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}
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if (src[0] == 'f' && src[1] == 'p')
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{
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*mode = PSIZE | REG | direction;
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*reg = 6;
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return 2;
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}
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if (src[0] == 'e'
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&& src[1] == 'r'
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&& src[2] >= '0' && src[2] <= '7')
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{
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*mode = L_32 | REG | direction;
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*reg = src[2] - '0';
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if (!Hmode)
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as_warn ("Reg only legal for H8/300-H");
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return 3;
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}
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if (src[0] == 'e'
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&& src[1] >= '0' && src[1] <= '7')
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{
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*mode = L_16 | REG | direction;
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*reg = src[1] - '0' + 8;
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if (!Hmode)
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as_warn ("Reg only legal for H8/300-H");
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return 2;
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}
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if (src[0] == 'r')
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{
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if (src[1] >= '0' && src[1] <= '7')
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{
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if (src[2] == 'l')
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{
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*mode = L_8 | REG | direction;
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*reg = (src[1] - '0') + 8;
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return 3;
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}
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if (src[2] == 'h')
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{
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*mode = L_8 | REG | direction;
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*reg = (src[1] - '0');
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return 3;
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}
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*mode = L_16 | REG | direction;
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*reg = (src[1] - '0');
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return 2;
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}
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}
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return 0;
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}
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char *
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DEFUN (parse_exp, (s, op),
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char *s AND
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expressionS * op)
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{
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char *save = input_line_pointer;
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char *new;
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input_line_pointer = s;
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if (expression (op) == O_absent)
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as_bad ("missing operand");
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new = input_line_pointer;
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input_line_pointer = save;
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return new;
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}
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static char *
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skip_colonthing (ptr, exp, mode)
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char *ptr;
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expressionS *exp;
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int *mode;
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{
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if (*ptr == ':')
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{
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ptr++;
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if (*ptr == '8')
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{
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ptr++;
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/* ff fill any 8 bit quantity */
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exp->X_add_number |= 0xff00;
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}
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else
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{
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*mode &= ~SIZE;
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if (*ptr == '2')
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{
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*mode |= L_24;
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}
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else if (*ptr == '1')
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{
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*mode |= L_16;
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}
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while (isdigit (*ptr))
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ptr++;
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}
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}
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return ptr;
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}
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/* The many forms of operand:
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Rn Register direct
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@Rn Register indirect
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@(exp[:16], Rn) Register indirect with displacement
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@Rn+
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@-Rn
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@aa:8 absolute 8 bit
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@aa:16 absolute 16 bit
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@aa absolute 16 bit
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#xx[:size] immediate data
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@(exp:[8], pc) pc rel
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@@aa[:8] memory indirect
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*/
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char *
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colonmod24 (op, src)
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struct h8_op *op;
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char *src;
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{
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int mode = 0;
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src = skip_colonthing (src, &op->exp, &mode);
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if (!mode)
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{
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/* Choose a default mode */
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if (op->exp.X_add_number < -32768
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|| op->exp.X_add_number > 32767)
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{
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if (Hmode)
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mode = L_24;
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else
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mode = L_16;
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}
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else if (op->exp.X_add_symbol
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|| op->exp.X_op_symbol)
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mode = DSYMMODE;
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else
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mode = DMODE;
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}
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op->mode |= mode;
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return src;
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}
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static void
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get_operand (ptr, op, dst, direction)
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char **ptr;
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struct h8_op *op;
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unsigned int dst;
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{
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char *src = *ptr;
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op_type mode;
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unsigned int num;
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unsigned int len;
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unsigned int size;
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op->mode = E;
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len = parse_reg (src, &op->mode, &op->reg, direction);
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if (len)
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{
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*ptr = src + len;
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return;
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}
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if (*src == '@')
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{
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src++;
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if (*src == '@')
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{
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src++;
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src = parse_exp (src, &op->exp);
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src = skip_colonthing (src, &op->exp, &op->mode);
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*ptr = src;
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op->mode = MEMIND;
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return;
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}
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if (*src == '-')
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{
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src++;
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len = parse_reg (src, &mode, &num, direction);
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if (len == 0)
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{
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/* Oops, not a reg after all, must be ordinary exp */
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src--;
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/* must be a symbol */
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op->mode = ABS | PSIZE | direction;
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*ptr = skip_colonthing (parse_exp (src, &op->exp),
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&op->exp, &op->mode);
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return;
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}
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if ((mode & SIZE) != PSIZE)
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as_bad ("Wrong size pointer register for architecture.");
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op->mode = RDDEC;
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op->reg = num;
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*ptr = src + len;
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return;
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}
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if (*src == '(' )
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{
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/* Disp */
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src++;
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/* Start off assuming a 16 bit offset */
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src = parse_exp (src, &op->exp);
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src = colonmod24 (op, src);
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if (*src == ')')
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{
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src++;
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op->mode = DISP | direction;
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*ptr = src;
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return;
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}
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if (*src != ',')
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{
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as_bad ("expected @(exp, reg16)");
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return;
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}
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src++;
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len = parse_reg (src, &mode, &op->reg, direction);
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if (len == 0 || !(mode & REG))
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{
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as_bad ("expected @(exp, reg16)");
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return;
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}
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op->mode |= DISP | direction;
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dispreg = op->reg;
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src += len;
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src = skip_colonthing (src, &op->exp, &op->mode);
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if (*src != ')' && '(')
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{
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as_bad ("expected @(exp, reg16)");
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return;
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}
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*ptr = src + 1;
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return;
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}
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len = parse_reg (src, &mode, &num, direction);
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if (len)
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{
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src += len;
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if (*src == '+')
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{
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src++;
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if ((mode & SIZE) != PSIZE)
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as_bad ("Wrong size pointer register for architecture.");
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op->mode = RSINC;
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op->reg = num;
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*ptr = src;
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return;
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}
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if ((mode & SIZE) != PSIZE)
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as_bad ("Wrong size pointer register for architecture.");
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op->mode = direction | IND | PSIZE;
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op->reg = num;
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*ptr = src;
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return;
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}
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else
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{
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/* must be a symbol */
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op->mode = ABS | direction;
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src = parse_exp (src, &op->exp);
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*ptr = colonmod24 (op, src);
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return;
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}
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}
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if (*src == '#')
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{
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src++;
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op->mode = IMM;
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src = parse_exp (src, &op->exp);
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*ptr = skip_colonthing (src, &op->exp, &op->mode);
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return;
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}
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else
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{
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src = parse_exp (src, &op->exp);
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/* Trailing ':' size ? */
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if (*src == ':')
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{
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if (src[1] == '1' && src[2] == '6')
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{
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op->mode = PCREL | L_16;
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src += 3;
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}
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else if (src[1] == '8')
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{
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op->mode = PCREL | L_8;
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src += 2;
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}
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else
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{
|
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as_bad ("expect :8 or :16 here");
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}
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}
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else
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{
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op->mode = PCREL | bsize;
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}
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*ptr = src;
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}
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}
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static
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char *
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DEFUN (get_operands, (noperands, op_end, operand),
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unsigned int noperands AND
|
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char *op_end AND
|
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struct h8_op *operand)
|
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{
|
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char *ptr = op_end;
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switch (noperands)
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{
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case 0:
|
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operand[0].mode = 0;
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operand[1].mode = 0;
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break;
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case 1:
|
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ptr++;
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get_operand (&ptr, operand + 0, 0, SRC);
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if (*ptr == ',')
|
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{
|
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ptr++;
|
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get_operand (&ptr, operand + 1, 1, DST);
|
|
}
|
|
else
|
|
{
|
|
operand[1].mode = 0;
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|
}
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|
|
break;
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case 2:
|
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ptr++;
|
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get_operand (&ptr, operand + 0, 0, SRC);
|
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if (*ptr == ',')
|
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ptr++;
|
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get_operand (&ptr, operand + 1, 1, DST);
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break;
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|
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default:
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abort ();
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|
}
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|
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return ptr;
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}
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|
|
/* Passed a pointer to a list of opcodes which use different
|
|
addressing modes, return the opcode which matches the opcodes
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provided
|
|
*/
|
|
static
|
|
struct h8_opcode *
|
|
get_specific (opcode, operands)
|
|
struct h8_opcode *opcode;
|
|
struct h8_op *operands;
|
|
{
|
|
struct h8_opcode *this_try = opcode;
|
|
int found = 0;
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|
|
unsigned int this_index = opcode->idx;
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|
|
while (this_index == opcode->idx && !found)
|
|
{
|
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unsigned int i;
|
|
found = 1;
|
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|
|
this_try = opcode++;
|
|
for (i = 0; i < this_try->noperands && found; i++)
|
|
{
|
|
op_type op = this_try->args.nib[i];
|
|
int x = operands[i].mode;
|
|
|
|
if ((op & (DISP | REG)) == (DISP | REG)
|
|
&& ((x & DISP | REG) == (DISP | REG)))
|
|
{
|
|
dispreg = operands[i].reg;
|
|
}
|
|
else if (op & REG)
|
|
{
|
|
if (!(x & REG))
|
|
found = 0;
|
|
|
|
if (x & L_P)
|
|
{
|
|
x = (x & ~L_P) | (Hmode ? L_32 : L_16);
|
|
}
|
|
if (op & L_P)
|
|
{
|
|
op = (op & ~L_P) | (Hmode ? L_32 : L_16);
|
|
}
|
|
|
|
opsize = op & SIZE;
|
|
|
|
/* The size of the reg is v important */
|
|
if ((op & SIZE) != (x & SIZE))
|
|
found = 0;
|
|
}
|
|
else if ((op & ABSJMP) && (x & ABS))
|
|
{
|
|
operands[i].mode &= ~ABS;
|
|
operands[i].mode |= ABSJMP;
|
|
/* But it may not be 24 bits long */
|
|
if (!Hmode)
|
|
{
|
|
operands[i].mode &= ~SIZE;
|
|
operands[i].mode |= L_16;
|
|
}
|
|
|
|
|
|
}
|
|
else if ((op & (KBIT | DBIT)) && (x & IMM))
|
|
{
|
|
/* This is ok if the immediate value is sensible */
|
|
|
|
}
|
|
else if (op & PCREL)
|
|
{
|
|
|
|
/* The size of the displacement is important */
|
|
if ((op & SIZE) != (x & SIZE))
|
|
found = 0;
|
|
|
|
}
|
|
else if ((op & (DISP | IMM | ABS))
|
|
&& (op & (DISP | IMM | ABS)) == (x & (DISP | IMM | ABS)))
|
|
{
|
|
/* Got a diplacement,will fit if no size or same size as try */
|
|
if ((x & SIZE) != 0
|
|
&& ((op & SIZE) != (x & SIZE)))
|
|
found = 0;
|
|
}
|
|
else if ((op & ABSMOV) && (x & ABS))
|
|
{
|
|
/* Ok */
|
|
}
|
|
else if ((op & MODE) != (x & MODE))
|
|
{
|
|
found = 0;
|
|
}
|
|
|
|
}
|
|
}
|
|
if (found)
|
|
return this_try;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
DEFUN (check_operand, (operand, width, string),
|
|
struct h8_op *operand AND
|
|
unsigned int width AND
|
|
char *string)
|
|
{
|
|
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*/
|
|
if ((operand->exp.X_add_number & ~width) != 0 &&
|
|
(operand->exp.X_add_number | width) != (~0))
|
|
{
|
|
as_warn ("operand %s0x%x out of range.", string, operand->exp.X_add_number);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
do_a_fix_imm (offset, operand, relaxing)
|
|
int offset;
|
|
struct h8_op *operand;
|
|
int relaxing;
|
|
{
|
|
int idx;
|
|
int size;
|
|
int where;
|
|
|
|
|
|
char *t = operand->mode & IMM ? "#" : "@";
|
|
|
|
if (operand->exp.X_add_symbol == 0)
|
|
{
|
|
char *bytes = frag_now->fr_literal + offset;
|
|
switch (operand->mode & SIZE)
|
|
{
|
|
case L_3:
|
|
check_operand (operand, 0x7, t);
|
|
bytes[0] |= (operand->exp.X_add_number) << 4;
|
|
break;
|
|
case L_8:
|
|
check_operand (operand, 0xff, t);
|
|
bytes[0] = operand->exp.X_add_number;
|
|
break;
|
|
case L_16:
|
|
check_operand (operand, 0xffff, t);
|
|
bytes[0] = operand->exp.X_add_number >> 8;
|
|
bytes[1] = operand->exp.X_add_number >> 0;
|
|
break;
|
|
case L_24:
|
|
check_operand (operand, 0xffffff, t);
|
|
bytes[0] = operand->exp.X_add_number >> 16;
|
|
bytes[1] = operand->exp.X_add_number >> 8;
|
|
bytes[2] = operand->exp.X_add_number >> 0;
|
|
break;
|
|
|
|
case L_32:
|
|
/* 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;
|
|
bytes[3] = operand->exp.X_add_number >> 0;
|
|
break;
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
switch (operand->mode & SIZE)
|
|
{
|
|
default:
|
|
abort ();
|
|
case L_24:
|
|
size = 4;
|
|
where = -1;
|
|
idx = relaxing ? R_MOVLB1 : R_RELLONG;
|
|
break;
|
|
|
|
case L_32:
|
|
size = 4;
|
|
where = 0;
|
|
idx = R_RELLONG;
|
|
break;
|
|
case L_16:
|
|
size = 2;
|
|
where = 0;
|
|
idx = relaxing ? R_MOVB1 : R_RELWORD;
|
|
break;
|
|
case L_8:
|
|
size = 1;
|
|
where = 0;
|
|
idx = R_RELBYTE;
|
|
}
|
|
|
|
|
|
operand->exp.X_add_number = (short) operand->exp.X_add_number;
|
|
fix_new_exp (frag_now,
|
|
offset + where,
|
|
size,
|
|
&operand->exp,
|
|
0,
|
|
idx);
|
|
}
|
|
|
|
}
|
|
|
|
/* Now we know what sort of opcodes it is, lets build the bytes -
|
|
*/
|
|
static void
|
|
build_bytes (this_try, operand)
|
|
struct h8_opcode *this_try;
|
|
struct h8_op *operand;
|
|
{
|
|
unsigned int i;
|
|
|
|
char *output = frag_more (this_try->length);
|
|
char *output_ptr = output;
|
|
op_type *nibble_ptr = this_try->data.nib;
|
|
char part;
|
|
op_type c;
|
|
char high;
|
|
unsigned int nibble_count = 0;
|
|
|
|
int immat;
|
|
int nib;
|
|
char asnibbles[30];
|
|
char *p = asnibbles;
|
|
|
|
if (!(this_try->inbase || Hmode))
|
|
{
|
|
as_warn ("Opcode `%s' only available on H8/300-H", this_try->name);
|
|
}
|
|
|
|
while (*nibble_ptr != E)
|
|
{
|
|
int d;
|
|
c = *nibble_ptr++;
|
|
|
|
d = (c & DST) != 0;
|
|
|
|
if (c < 16)
|
|
{
|
|
nib = c;
|
|
}
|
|
else
|
|
{
|
|
|
|
if (c & (REG | IND | INC | DEC))
|
|
{
|
|
nib = operand[d].reg;
|
|
}
|
|
else if ((c & DISPREG) == (DISPREG))
|
|
{
|
|
nib = dispreg;
|
|
}
|
|
|
|
else if (c & ABSMOV)
|
|
{
|
|
operand[d].mode &= ~ABS;
|
|
operand[d].mode |= ABSMOV;
|
|
immat = nibble_count / 2;
|
|
nib = 0;
|
|
}
|
|
else if (c & (IMM | PCREL | ABS | ABSJMP | DISP ))
|
|
{
|
|
operand[d].mode = c;
|
|
immat = nibble_count / 2;
|
|
nib = 0;
|
|
}
|
|
else if (c & IGNORE)
|
|
{
|
|
nib = 0;
|
|
}
|
|
else if (c & DBIT)
|
|
{
|
|
switch (operand[0].exp.X_add_number)
|
|
{
|
|
case 1:
|
|
nib = c;
|
|
break;
|
|
case 2:
|
|
nib = 0x8 | c;
|
|
break;
|
|
default:
|
|
as_bad ("Need #1 or #2 here");
|
|
}
|
|
}
|
|
else if (c & KBIT)
|
|
{
|
|
switch (operand[0].exp.X_add_number)
|
|
{
|
|
case 1:
|
|
nib = 0;
|
|
break;
|
|
case 2:
|
|
nib = 8;
|
|
break;
|
|
case 4:
|
|
if (!Hmode)
|
|
as_warn ("#4 only valid in h8/300 mode.");
|
|
nib = 9;
|
|
break;
|
|
|
|
default:
|
|
as_bad ("Need #1 or #2 here");
|
|
break;
|
|
}
|
|
/* stop it making a fix */
|
|
operand[0].mode = 0;
|
|
}
|
|
|
|
if (c & B31)
|
|
{
|
|
nib |= 0x8;
|
|
}
|
|
}
|
|
nibble_count++;
|
|
|
|
*p++ = nib;
|
|
}
|
|
|
|
for (i = 0; i < this_try->length; i++)
|
|
{
|
|
output[i] = (asnibbles[i * 2] << 4) | asnibbles[i * 2 + 1];
|
|
}
|
|
|
|
/* output any fixes */
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
int x = operand[i].mode;
|
|
|
|
if (x & (IMM | ABS | DISP))
|
|
{
|
|
do_a_fix_imm (output - frag_now->fr_literal + immat, operand + i,0);
|
|
}
|
|
else if (x & PCREL)
|
|
{
|
|
int size16 = x & L_16;
|
|
int where = size16 ? 2 : 1;
|
|
int size = size16 ? 2 : 1;
|
|
int type = size16 ? R_PCRWORD : R_PCRBYTE;
|
|
|
|
check_operand (operand + i, size16 ? 0x7fff : 0x7f, "@");
|
|
|
|
if (operand[i].exp.X_add_number & 1)
|
|
{
|
|
as_warn ("branch operand has odd offset (%x)\n",
|
|
operand->exp.X_add_number);
|
|
}
|
|
|
|
operand[i].exp.X_add_number =
|
|
(char) (operand[i].exp.X_add_number - 1);
|
|
fix_new_exp (frag_now,
|
|
output - frag_now->fr_literal + where,
|
|
size,
|
|
&operand[i].exp,
|
|
1,
|
|
type);
|
|
}
|
|
else if (x & MEMIND)
|
|
{
|
|
|
|
check_operand (operand + i, 0xff, "@@");
|
|
fix_new_exp (frag_now,
|
|
output - frag_now->fr_literal + 1,
|
|
1,
|
|
&operand[i].exp,
|
|
0,
|
|
R_RELBYTE);
|
|
}
|
|
|
|
else if (x & ABSMOV)
|
|
{
|
|
/* This mov is either absolute long or thru a memory loc */
|
|
do_a_fix_imm (output - frag_now->fr_literal + immat, operand + i,1);
|
|
}
|
|
|
|
else if (x & ABSJMP)
|
|
{
|
|
/* This jmp may be a jump or a branch */
|
|
|
|
check_operand (operand + i, Hmode ? 0xfffff : 0xffff, "@");
|
|
if (operand[i].exp.X_add_number & 1)
|
|
{
|
|
as_warn ("branch operand has odd offset (%x)\n",
|
|
operand->exp.X_add_number);
|
|
}
|
|
operand[i].exp.X_add_number = (short) operand[i].exp.X_add_number;
|
|
fix_new_exp (frag_now,
|
|
output - frag_now->fr_literal,
|
|
4,
|
|
&operand[i].exp,
|
|
0,
|
|
R_JMPL1);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
try and give an intelligent error message for common and simple to
|
|
detect errors
|
|
*/
|
|
|
|
static void
|
|
DEFUN (clever_message, (opcode, operand),
|
|
struct h8_opcode *opcode AND
|
|
struct h8_op *operand)
|
|
{
|
|
struct h8_opcode *scan = opcode;
|
|
|
|
/* Find out if there was more than one possible opccode */
|
|
|
|
if ((opcode + 1)->idx != opcode->idx)
|
|
{
|
|
unsigned int argn;
|
|
|
|
/* Only one opcode of this flavour, try and guess which operand
|
|
didn't match */
|
|
for (argn = 0; argn < opcode->noperands; argn++)
|
|
{
|
|
switch (opcode->args.nib[argn])
|
|
{
|
|
case RD16:
|
|
if (operand[argn].mode != RD16)
|
|
{
|
|
as_bad ("destination operand must be 16 bit register");
|
|
return;
|
|
|
|
}
|
|
break;
|
|
|
|
case RS8:
|
|
|
|
if (operand[argn].mode != RS8)
|
|
{
|
|
as_bad ("source operand must be 8 bit register");
|
|
return;
|
|
}
|
|
break;
|
|
|
|
case ABS16DST:
|
|
if (operand[argn].mode != ABS16DST)
|
|
{
|
|
as_bad ("destination operand must be 16bit absolute address");
|
|
return;
|
|
}
|
|
break;
|
|
case RD8:
|
|
if (operand[argn].mode != RD8)
|
|
{
|
|
as_bad ("destination operand must be 8 bit register");
|
|
return;
|
|
}
|
|
break;
|
|
|
|
|
|
case ABS16SRC:
|
|
if (operand[argn].mode != ABS16SRC)
|
|
{
|
|
as_bad ("source operand must be 16bit absolute address");
|
|
return;
|
|
}
|
|
break;
|
|
|
|
}
|
|
}
|
|
}
|
|
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.
|
|
*/
|
|
|
|
|
|
|
|
void
|
|
DEFUN (md_assemble, (str),
|
|
char *str)
|
|
{
|
|
char *op_start;
|
|
char *op_end;
|
|
unsigned int i;
|
|
struct h8_op operand[2];
|
|
struct h8_opcode *opcode;
|
|
struct h8_opcode *prev_opcode;
|
|
|
|
char *dot = 0;
|
|
char c;
|
|
|
|
/* Drop leading whitespace */
|
|
while (*str == ' ')
|
|
str++;
|
|
|
|
/* find the op code end */
|
|
for (op_start = op_end = str;
|
|
*op_end != 0 && *op_end != ' ';
|
|
op_end++)
|
|
{
|
|
if (*op_end == '.')
|
|
{
|
|
dot = op_end + 1;
|
|
*op_end = 0;
|
|
op_end += 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
;
|
|
|
|
if (op_end == op_start)
|
|
{
|
|
as_bad ("can't find opcode ");
|
|
}
|
|
c = *op_end;
|
|
|
|
*op_end = 0;
|
|
|
|
opcode = (struct h8_opcode *) hash_find (opcode_hash_control,
|
|
op_start);
|
|
|
|
if (opcode == NULL)
|
|
{
|
|
as_bad ("unknown opcode");
|
|
return;
|
|
}
|
|
|
|
|
|
input_line_pointer = get_operands (opcode->noperands, op_end,
|
|
operand);
|
|
*op_end = c;
|
|
prev_opcode = opcode;
|
|
|
|
opcode = get_specific (opcode, operand);
|
|
|
|
if (opcode == 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);
|
|
|
|
return;
|
|
}
|
|
if (opcode->size && dot)
|
|
{
|
|
if (opcode->size != *dot)
|
|
{
|
|
as_warn ("mismatch between opcode size and operand size");
|
|
}
|
|
}
|
|
|
|
build_bytes (opcode, operand);
|
|
|
|
}
|
|
|
|
void
|
|
DEFUN (tc_crawl_symbol_chain, (headers),
|
|
object_headers * headers)
|
|
{
|
|
printf ("call to tc_crawl_symbol_chain \n");
|
|
}
|
|
|
|
symbolS *
|
|
DEFUN (md_undefined_symbol, (name),
|
|
char *name)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
DEFUN (tc_headers_hook, (headers),
|
|
object_headers * headers)
|
|
{
|
|
printf ("call to tc_headers_hook \n");
|
|
}
|
|
|
|
void
|
|
DEFUN_VOID (md_end)
|
|
{
|
|
}
|
|
|
|
/* Various routines to kill one day */
|
|
/* 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.
|
|
*/
|
|
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 "";
|
|
}
|
|
|
|
int
|
|
md_parse_option (argP, cntP, vecP)
|
|
char **argP;
|
|
int *cntP;
|
|
char ***vecP;
|
|
|
|
{
|
|
return 0;
|
|
|
|
}
|
|
|
|
int md_short_jump_size;
|
|
|
|
void
|
|
tc_aout_fix_to_chars ()
|
|
{
|
|
printf ("call to tc_aout_fix_to_chars \n");
|
|
abort ();
|
|
}
|
|
|
|
void
|
|
md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
|
|
char *ptr;
|
|
addressT from_addr;
|
|
addressT to_addr;
|
|
fragS *frag;
|
|
symbolS *to_symbol;
|
|
{
|
|
as_fatal ("failed sanity check.");
|
|
}
|
|
|
|
void
|
|
md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
|
|
char *ptr;
|
|
addressT from_addr, to_addr;
|
|
fragS *frag;
|
|
symbolS *to_symbol;
|
|
{
|
|
as_fatal ("failed sanity check.");
|
|
}
|
|
|
|
void
|
|
md_convert_frag (headers, fragP)
|
|
object_headers *headers;
|
|
fragS *fragP;
|
|
|
|
{
|
|
printf ("call to md_convert_frag \n");
|
|
abort ();
|
|
}
|
|
|
|
valueT md_section_align (seg, size)
|
|
segT seg;
|
|
valueT size;
|
|
{
|
|
return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
|
|
|
|
}
|
|
|
|
void
|
|
md_apply_fix (fixP, val)
|
|
fixS *fixP;
|
|
long val;
|
|
{
|
|
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
|
|
|
|
switch (fixP->fx_size)
|
|
{
|
|
case 1:
|
|
*buf++ = val;
|
|
break;
|
|
case 2:
|
|
*buf++ = (val >> 8);
|
|
*buf++ = val;
|
|
break;
|
|
case 4:
|
|
*buf++ = (val >> 24);
|
|
*buf++ = (val >> 16);
|
|
*buf++ = (val >> 8);
|
|
*buf++ = val;
|
|
break;
|
|
default:
|
|
abort ();
|
|
|
|
}
|
|
}
|
|
|
|
void
|
|
DEFUN (md_operand, (expressionP), expressionS * expressionP)
|
|
{
|
|
}
|
|
|
|
int md_long_jump_size;
|
|
int
|
|
md_estimate_size_before_relax (fragP, segment_type)
|
|
register fragS *fragP;
|
|
register segT segment_type;
|
|
{
|
|
printf ("call tomd_estimate_size_before_relax \n");
|
|
abort ();
|
|
}
|
|
|
|
/* Put number into target byte order */
|
|
|
|
void
|
|
DEFUN (md_number_to_chars, (ptr, use, nbytes),
|
|
char *ptr AND
|
|
valueT use AND
|
|
int nbytes)
|
|
{
|
|
switch (nbytes)
|
|
{
|
|
case 4:
|
|
*ptr++ = (use >> 24) & 0xff;
|
|
case 3:
|
|
*ptr++ = (use >> 16) & 0xff;
|
|
case 2:
|
|
*ptr++ = (use >> 8) & 0xff;
|
|
case 1:
|
|
*ptr++ = (use >> 0) & 0xff;
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
long
|
|
md_pcrel_from (fixP)
|
|
fixS *fixP;
|
|
{
|
|
abort ();
|
|
}
|
|
|
|
void
|
|
tc_coff_symbol_emit_hook ()
|
|
{
|
|
}
|
|
|
|
|
|
void
|
|
tc_reloc_mangle (fix_ptr, intr, base)
|
|
fixS *fix_ptr;
|
|
struct internal_reloc *intr;
|
|
bfd_vma base;
|
|
|
|
{
|
|
symbolS *symbol_ptr;
|
|
|
|
symbol_ptr = fix_ptr->fx_addsy;
|
|
|
|
/* If this relocation is attached to a symbol then it's ok
|
|
to output it */
|
|
if (fix_ptr->fx_r_type == RELOC_32)
|
|
{
|
|
/* cons likes to create reloc32's whatever the size of the reloc..
|
|
*/
|
|
switch (fix_ptr->fx_size)
|
|
{
|
|
|
|
case 2:
|
|
intr->r_type = R_RELWORD;
|
|
break;
|
|
case 1:
|
|
intr->r_type = R_RELBYTE;
|
|
break;
|
|
default:
|
|
abort ();
|
|
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
intr->r_type = fix_ptr->fx_r_type;
|
|
}
|
|
|
|
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;
|
|
|
|
|
|
}
|
|
|
|
tc_coff_sizemachdep ()
|
|
{
|
|
abort ();
|
|
}
|
|
|
|
/* end of tc-h8300.c */
|