1993-07-13 03:42:32 +08:00
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/* tc-sh.c -- Assemble code for the Hitachi Super-H
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Copyright (C) 1993 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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1994-09-08 08:38:17 +08:00
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Written By Steve Chamberlain
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sac@cygnus.com
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*/
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1993-07-13 03:42:32 +08:00
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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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#include "subsegs.h"
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#define DEFINE_TABLE
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1995-01-24 03:22:52 +08:00
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#include "opcodes/sh-opc.h"
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1993-07-13 03:42:32 +08:00
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#include <ctype.h>
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const char comment_chars[] = "!";
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const char line_separator_chars[] = ";";
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1994-12-17 09:05:10 +08:00
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const char line_comment_chars[] = "!#";
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1993-07-13 03:42:32 +08:00
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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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1994-09-08 08:38:17 +08:00
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*/
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1993-07-13 03:42:32 +08:00
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void cons ();
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void s_align_bytes ();
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1994-12-17 09:05:10 +08:00
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int shl = 0;
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static void little()
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{
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shl = 1;
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}
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1993-07-13 03:42:32 +08:00
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const pseudo_typeS md_pseudo_table[] =
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{
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{"int", cons, 4},
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{"word", cons, 2},
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{"form", listing_psize, 0},
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1994-12-17 09:05:10 +08:00
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{"little", little,0},
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1993-07-13 03:42:32 +08:00
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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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1994-09-08 08:38:17 +08:00
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/*int md_reloc_size; */
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1993-07-13 03:42:32 +08:00
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static int relax; /* set if -relax seen */
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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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#define C(a,b) ENCODE_RELAX(a,b)
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#define JREG 14 /* Register used as a temp when relaxing */
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#define ENCODE_RELAX(what,length) (((what) << 4) + (length))
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#define GET_WHAT(x) ((x>>4))
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/* These are the two types of relaxable instrction */
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#define COND_JUMP 1
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#define UNCOND_JUMP 2
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#define UNDEF_DISP 0
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#define COND8 1
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#define COND12 2
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#define COND32 3
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#define UNCOND12 1
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#define UNCOND32 2
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#define UNDEF_WORD_DISP 4
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#define END 5
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#define UNCOND12 1
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#define UNCOND32 2
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#define COND8_F 254
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#define COND8_M -256
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#define COND8_LENGTH 2
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#define COND12_F (4094 - 4) /* -4 since there are two extra */
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/* instructions needed */
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#define COND12_M -4096
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#define COND12_LENGTH 6
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#define COND32_F (1<<30)
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#define COND32_M -(1<<30)
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#define COND32_LENGTH 14
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#define COND8_RANGE(x) ((x) > COND8_M && (x) < COND8_F)
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#define COND12_RANGE(x) ((x) > COND12_M && (x) < COND12_F)
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#define UNCOND12_F 4094
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#define UNCOND12_M -4096
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#define UNCOND12_LENGTH 2
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#define UNCOND32_F (1<<30)
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#define UNCOND32_M -(1<<30)
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#define UNCOND32_LENGTH 14
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1994-12-17 09:05:10 +08:00
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const relax_typeS md_relax_table[C (END, 0)] = {
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{ 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 },
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{ 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 },
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{ 0 },
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/* C (COND_JUMP, COND8) */
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{ COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP, COND12) },
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/* C (COND_JUMP, COND12) */
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{ COND12_F, COND12_M, COND12_LENGTH, C (COND_JUMP, COND32), },
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/* C (COND_JUMP, COND32) */
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{ COND32_F, COND32_M, COND32_LENGTH, 0, },
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{ 0 }, { 0 }, { 0 }, { 0 },
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{ 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 },
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{ 0 },
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/* C (UNCOND_JUMP, UNCOND12) */
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{ UNCOND12_F, UNCOND12_M, UNCOND12_LENGTH, C (UNCOND_JUMP, UNCOND32), },
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/* C (UNCOND_JUMP, UNCOND32) */
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{ UNCOND32_F, UNCOND32_M, UNCOND32_LENGTH, 0, },
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{ 0 }, { 0 }, { 0 }, { 0 }, { 0 },
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{ 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 }, { 0 },
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};
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1993-07-13 03:42:32 +08:00
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static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
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/*
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1994-09-08 08:38:17 +08:00
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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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1993-07-13 03:42:32 +08:00
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void
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md_begin ()
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{
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sh_opcode_info *opcode;
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char *prev_name = "";
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opcode_hash_control = hash_new ();
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/* Insert unique names into hash table */
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for (opcode = sh_table; opcode->name; opcode++)
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{
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if (strcmp (prev_name, opcode->name))
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{
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prev_name = opcode->name;
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hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
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}
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else
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{
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/* Make all the opcodes with the same name point to the same
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1994-09-08 08:38:17 +08:00
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string */
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1993-07-13 03:42:32 +08:00
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opcode->name = prev_name;
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}
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}
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}
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static int reg_m;
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static int reg_n;
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static expressionS immediate; /* absolute expression */
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typedef struct
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1994-09-08 08:38:17 +08:00
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{
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sh_arg_type type;
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int reg;
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}
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1993-07-13 03:42:32 +08:00
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sh_operand_info;
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/* try and parse a reg name, returns number of chars consumed */
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static int
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parse_reg (src, mode, reg)
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char *src;
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int *mode;
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int *reg;
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{
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if (src[0] == 'r')
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{
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if (src[1] == '1')
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{
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if (src[2] >= '0' && src[2] <= '5')
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{
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*mode = A_REG_N;
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*reg = 10 + src[2] - '0';
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return 3;
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}
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}
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if (src[1] >= '0' && src[1] <= '9')
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{
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*mode = A_REG_N;
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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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if (src[0] == 's' && src[1] == 'r')
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{
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*mode = A_SR;
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return 2;
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}
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if (src[0] == 's' && src[1] == 'p')
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{
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*mode = A_REG_N;
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*reg = 15;
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return 2;
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}
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if (src[0] == 'p' && src[1] == 'r')
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{
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*mode = A_PR;
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return 2;
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}
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if (src[0] == 'p' && src[1] == 'c')
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{
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*mode = A_DISP_PC;
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return 2;
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}
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if (src[0] == 'g' && src[1] == 'b' && src[2] == 'r')
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{
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*mode = A_GBR;
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return 3;
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}
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if (src[0] == 'v' && src[1] == 'b' && src[2] == 'r')
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{
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*mode = A_VBR;
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return 3;
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}
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if (src[0] == 'm' && src[1] == 'a' && src[2] == 'c')
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{
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if (src[3] == 'l')
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{
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*mode = A_MACL;
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return 4;
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}
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if (src[3] == 'h')
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{
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*mode = A_MACH;
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return 4;
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}
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}
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return 0;
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}
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1994-09-08 08:38:17 +08:00
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static symbolS *dot()
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{
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const char *fake;
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/* JF: '.' is pseudo symbol with value of current location
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in current segment. */
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fake = FAKE_LABEL_NAME;
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return symbol_new (fake,
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now_seg,
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(valueT) frag_now_fix (),
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frag_now);
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}
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1993-07-13 03:42:32 +08:00
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static
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char *
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parse_exp (s)
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char *s;
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{
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char *save;
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char *new;
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save = input_line_pointer;
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input_line_pointer = s;
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1994-09-08 08:38:17 +08:00
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expression (&immediate);
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if (immediate.X_op == O_absent)
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as_bad ("missing operand");
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1993-07-13 03:42:32 +08:00
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new = input_line_pointer;
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input_line_pointer = save;
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1994-09-08 08:38:17 +08:00
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return new;
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1993-07-13 03:42:32 +08:00
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}
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/* The many forms of operand:
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1994-09-08 08:38:17 +08:00
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Rn Register direct
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@Rn Register indirect
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@Rn+ Autoincrement
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@-Rn Autodecrement
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1993-07-13 03:42:32 +08:00
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@(disp:4,Rn)
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@(disp:8,GBR)
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@(disp:8,PC)
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@(R0,Rn)
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@(R0,GBR)
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disp:8
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disp:12
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#imm8
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pr, gbr, vbr, macl, mach
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*/
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static
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char *
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parse_at (src, op)
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char *src;
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sh_operand_info *op;
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{
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|
|
int len;
|
|
|
|
|
int mode;
|
|
|
|
|
src++;
|
|
|
|
|
if (src[0] == '-')
|
|
|
|
|
{
|
|
|
|
|
/* Must be predecrement */
|
|
|
|
|
src++;
|
|
|
|
|
|
|
|
|
|
len = parse_reg (src, &mode, &(op->reg));
|
|
|
|
|
if (mode != A_REG_N)
|
|
|
|
|
as_bad ("illegal register after @-");
|
|
|
|
|
|
|
|
|
|
op->type = A_DEC_N;
|
|
|
|
|
src += len;
|
|
|
|
|
}
|
|
|
|
|
else if (src[0] == '(')
|
|
|
|
|
{
|
|
|
|
|
/* Could be @(disp, rn), @(disp, gbr), @(disp, pc), @(r0, gbr) or
|
1994-09-08 08:38:17 +08:00
|
|
|
|
@(r0, rn) */
|
1993-07-13 03:42:32 +08:00
|
|
|
|
src++;
|
|
|
|
|
len = parse_reg (src, &mode, &(op->reg));
|
|
|
|
|
if (len && mode == A_REG_N)
|
|
|
|
|
{
|
|
|
|
|
src += len;
|
|
|
|
|
if (op->reg != 0)
|
|
|
|
|
{
|
|
|
|
|
as_bad ("must be @(r0,...)");
|
|
|
|
|
}
|
|
|
|
|
if (src[0] == ',')
|
|
|
|
|
src++;
|
|
|
|
|
/* Now can be rn or gbr */
|
|
|
|
|
len = parse_reg (src, &mode, &(op->reg));
|
|
|
|
|
if (mode == A_GBR)
|
|
|
|
|
{
|
|
|
|
|
op->type = A_R0_GBR;
|
|
|
|
|
}
|
|
|
|
|
else if (mode == A_REG_N)
|
|
|
|
|
{
|
|
|
|
|
op->type = A_IND_R0_REG_N;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
as_bad ("syntax error in @(r0,...)");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* Must be an @(disp,.. thing) */
|
|
|
|
|
src = parse_exp (src);
|
|
|
|
|
if (src[0] == ',')
|
|
|
|
|
src++;
|
|
|
|
|
/* Now can be rn, gbr or pc */
|
|
|
|
|
len = parse_reg (src, &mode, &op->reg);
|
|
|
|
|
if (len)
|
|
|
|
|
{
|
|
|
|
|
if (mode == A_REG_N)
|
|
|
|
|
{
|
|
|
|
|
op->type = A_DISP_REG_N;
|
|
|
|
|
}
|
|
|
|
|
else if (mode == A_GBR)
|
|
|
|
|
{
|
|
|
|
|
op->type = A_DISP_GBR;
|
|
|
|
|
}
|
|
|
|
|
else if (mode == A_DISP_PC)
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
/* Turn a plain @(4,pc) into @(.+4,pc) */
|
|
|
|
|
if (immediate.X_op == O_constant) {
|
|
|
|
|
immediate.X_add_symbol = dot();
|
|
|
|
|
immediate.X_op = O_symbol;
|
|
|
|
|
}
|
1993-07-13 03:42:32 +08:00
|
|
|
|
op->type = A_DISP_PC;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
as_bad ("syntax error in @(disp,[Rn, gbr, pc])");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
as_bad ("syntax error in @(disp,[Rn, gbr, pc])");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
src += len;
|
|
|
|
|
if (src[0] != ')')
|
|
|
|
|
as_bad ("expecting )");
|
|
|
|
|
else
|
|
|
|
|
src++;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
src += parse_reg (src, &mode, &(op->reg));
|
|
|
|
|
if (mode != A_REG_N)
|
|
|
|
|
{
|
|
|
|
|
as_bad ("illegal register after @");
|
|
|
|
|
}
|
|
|
|
|
if (src[0] == '+')
|
|
|
|
|
{
|
|
|
|
|
op->type = A_INC_N;
|
|
|
|
|
src++;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
op->type = A_IND_N;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return src;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
get_operand (ptr, op)
|
|
|
|
|
char **ptr;
|
|
|
|
|
sh_operand_info *op;
|
|
|
|
|
{
|
|
|
|
|
char *src = *ptr;
|
|
|
|
|
int mode = -1;
|
|
|
|
|
unsigned int len;
|
|
|
|
|
|
|
|
|
|
if (src[0] == '#')
|
|
|
|
|
{
|
|
|
|
|
src++;
|
|
|
|
|
*ptr = parse_exp (src);
|
|
|
|
|
op->type = A_IMM;
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
else if (src[0] == '@')
|
|
|
|
|
{
|
|
|
|
|
*ptr = parse_at (src, op);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
len = parse_reg (src, &mode, &(op->reg));
|
|
|
|
|
if (len)
|
|
|
|
|
{
|
|
|
|
|
*ptr = src + len;
|
|
|
|
|
op->type = mode;
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* Not a reg, the only thing left is a displacement */
|
|
|
|
|
*ptr = parse_exp (src);
|
|
|
|
|
op->type = A_DISP_PC;
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static
|
|
|
|
|
char *
|
|
|
|
|
get_operands (info, args, operand)
|
|
|
|
|
sh_opcode_info *info;
|
|
|
|
|
char *args;
|
|
|
|
|
sh_operand_info *operand;
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
char *ptr = args;
|
|
|
|
|
if (info->arg[0])
|
|
|
|
|
{
|
|
|
|
|
ptr++;
|
|
|
|
|
|
|
|
|
|
get_operand (&ptr, operand + 0);
|
|
|
|
|
if (info->arg[1])
|
|
|
|
|
{
|
|
|
|
|
if (*ptr == ',')
|
|
|
|
|
{
|
|
|
|
|
ptr++;
|
|
|
|
|
}
|
|
|
|
|
get_operand (&ptr, operand + 1);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
operand[1].type = 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
operand[0].type = 0;
|
|
|
|
|
operand[1].type = 0;
|
|
|
|
|
}
|
|
|
|
|
return ptr;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Passed a pointer to a list of opcodes which use different
|
|
|
|
|
addressing modes, return the opcode which matches the opcodes
|
|
|
|
|
provided
|
1994-09-08 08:38:17 +08:00
|
|
|
|
*/
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
static
|
|
|
|
|
sh_opcode_info *
|
|
|
|
|
get_specific (opcode, operands)
|
|
|
|
|
sh_opcode_info *opcode;
|
|
|
|
|
sh_operand_info *operands;
|
|
|
|
|
{
|
|
|
|
|
sh_opcode_info *this_try = opcode;
|
|
|
|
|
char *name = opcode->name;
|
|
|
|
|
int arg_to_test = 0;
|
|
|
|
|
int n = 0;
|
|
|
|
|
while (opcode->name)
|
|
|
|
|
{
|
|
|
|
|
this_try = opcode++;
|
|
|
|
|
if (this_try->name != name)
|
|
|
|
|
{
|
|
|
|
|
/* We've looked so far down the table that we've run out of
|
|
|
|
|
opcodes with the same name */
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
/* look at both operands needed by the opcodes and provided by
|
1994-09-08 08:38:17 +08:00
|
|
|
|
the user - since an arg test will often fail on the same arg
|
|
|
|
|
again and again, we'll try and test the last failing arg the
|
|
|
|
|
first on each opcode try */
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
for (n = 0; this_try->arg[n]; n++)
|
|
|
|
|
{
|
|
|
|
|
sh_operand_info *user = operands + arg_to_test;
|
|
|
|
|
sh_arg_type arg = this_try->arg[arg_to_test];
|
|
|
|
|
switch (arg)
|
|
|
|
|
{
|
|
|
|
|
case A_IMM:
|
|
|
|
|
case A_BDISP12:
|
|
|
|
|
case A_BDISP8:
|
|
|
|
|
case A_DISP_GBR:
|
|
|
|
|
case A_DISP_PC:
|
|
|
|
|
case A_MACH:
|
|
|
|
|
case A_PR:
|
|
|
|
|
case A_MACL:
|
|
|
|
|
if (user->type != arg)
|
|
|
|
|
goto fail;
|
|
|
|
|
break;
|
|
|
|
|
case A_R0:
|
|
|
|
|
/* opcode needs r0 */
|
|
|
|
|
if (user->type != A_REG_N || user->reg != 0)
|
|
|
|
|
goto fail;
|
|
|
|
|
break;
|
|
|
|
|
case A_R0_GBR:
|
|
|
|
|
if (user->type != A_R0_GBR || user->reg != 0)
|
|
|
|
|
goto fail;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case A_REG_N:
|
|
|
|
|
case A_INC_N:
|
|
|
|
|
case A_DEC_N:
|
|
|
|
|
case A_IND_N:
|
|
|
|
|
case A_IND_R0_REG_N:
|
|
|
|
|
case A_DISP_REG_N:
|
|
|
|
|
/* Opcode needs rn */
|
|
|
|
|
if (user->type != arg)
|
|
|
|
|
goto fail;
|
|
|
|
|
reg_n = user->reg;
|
|
|
|
|
break;
|
|
|
|
|
case A_GBR:
|
|
|
|
|
case A_SR:
|
|
|
|
|
case A_VBR:
|
|
|
|
|
if (user->type != arg)
|
|
|
|
|
goto fail;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case A_REG_M:
|
|
|
|
|
case A_INC_M:
|
|
|
|
|
case A_DEC_M:
|
|
|
|
|
case A_IND_M:
|
|
|
|
|
case A_IND_R0_REG_M:
|
|
|
|
|
case A_DISP_REG_M:
|
|
|
|
|
/* Opcode needs rn */
|
|
|
|
|
if (user->type != arg - A_REG_M + A_REG_N)
|
|
|
|
|
goto fail;
|
|
|
|
|
reg_m = user->reg;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
printf ("unhandled %d\n", arg);
|
|
|
|
|
goto fail;
|
|
|
|
|
}
|
|
|
|
|
/* If we did 0, test 1 next, else 0 */
|
|
|
|
|
arg_to_test = 1 - arg_to_test;
|
|
|
|
|
}
|
|
|
|
|
return this_try;
|
|
|
|
|
fail:;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
check (operand, low, high)
|
|
|
|
|
expressionS *operand;
|
|
|
|
|
int low;
|
|
|
|
|
int high;
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
if (operand->X_op != O_constant
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|| operand->X_add_number < low
|
|
|
|
|
|| operand->X_add_number > high)
|
|
|
|
|
{
|
|
|
|
|
as_bad ("operand must be absolute in range %d..%d", low, high);
|
|
|
|
|
}
|
|
|
|
|
return operand->X_add_number;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
insert (where, how, pcrel)
|
|
|
|
|
char *where;
|
|
|
|
|
int how;
|
|
|
|
|
int pcrel;
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
fix_new_exp (frag_now,
|
|
|
|
|
where - frag_now->fr_literal,
|
|
|
|
|
4,
|
|
|
|
|
&immediate,
|
|
|
|
|
pcrel,
|
|
|
|
|
how);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
build_relax (opcode)
|
|
|
|
|
sh_opcode_info *opcode;
|
|
|
|
|
{
|
|
|
|
|
int len;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
int high_byte = shl ? 1 : 0 ;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
char *p;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
|
1993-07-13 03:42:32 +08:00
|
|
|
|
if (opcode->arg[0] == A_BDISP8)
|
|
|
|
|
{
|
|
|
|
|
p = frag_var (rs_machine_dependent,
|
|
|
|
|
md_relax_table[C (COND_JUMP, COND32)].rlx_length,
|
|
|
|
|
len = md_relax_table[C (COND_JUMP, COND8)].rlx_length,
|
|
|
|
|
C (COND_JUMP, 0),
|
|
|
|
|
immediate.X_add_symbol,
|
|
|
|
|
immediate.X_add_number,
|
|
|
|
|
0);
|
1994-12-17 09:05:10 +08:00
|
|
|
|
p[high_byte] = (opcode->nibbles[0] << 4) | (opcode->nibbles[1]);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
|
|
|
|
else if (opcode->arg[0] == A_BDISP12)
|
|
|
|
|
{
|
|
|
|
|
p = frag_var (rs_machine_dependent,
|
|
|
|
|
md_relax_table[C (UNCOND_JUMP, UNCOND32)].rlx_length,
|
1994-12-17 09:05:10 +08:00
|
|
|
|
len = md_relax_table[C (UNCOND_JUMP, UNCOND12)].rlx_length,
|
1993-07-13 03:42:32 +08:00
|
|
|
|
C (UNCOND_JUMP, 0),
|
|
|
|
|
immediate.X_add_symbol,
|
|
|
|
|
immediate.X_add_number,
|
|
|
|
|
0);
|
1994-12-17 09:05:10 +08:00
|
|
|
|
p[high_byte] = (opcode->nibbles[0] << 4);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Now we know what sort of opcodes it is, lets build the bytes -
|
|
|
|
|
*/
|
|
|
|
|
static void
|
|
|
|
|
build_Mytes (opcode, operand)
|
|
|
|
|
sh_opcode_info *opcode;
|
|
|
|
|
sh_operand_info *operand;
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
int index;
|
|
|
|
|
char nbuf[4];
|
|
|
|
|
char *output = frag_more (2);
|
1994-12-17 09:05:10 +08:00
|
|
|
|
int low_byte = shl ? 0 : 1;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
nbuf[0] = 0;
|
|
|
|
|
nbuf[1] = 0;
|
|
|
|
|
nbuf[2] = 0;
|
|
|
|
|
nbuf[3] = 0;
|
|
|
|
|
|
|
|
|
|
for (index = 0; index < 4; index++)
|
|
|
|
|
{
|
|
|
|
|
sh_nibble_type i = opcode->nibbles[index];
|
|
|
|
|
if (i < 16)
|
|
|
|
|
{
|
|
|
|
|
nbuf[index] = i;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
switch (i)
|
|
|
|
|
{
|
|
|
|
|
case REG_N:
|
|
|
|
|
nbuf[index] = reg_n;
|
|
|
|
|
break;
|
|
|
|
|
case REG_M:
|
|
|
|
|
nbuf[index] = reg_m;
|
|
|
|
|
break;
|
|
|
|
|
case DISP_4:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output + low_byte, R_SH_IMM4, 0);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case IMM_4BY4:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output + low_byte, R_SH_IMM4BY4, 0);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case IMM_4BY2:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output + low_byte, R_SH_IMM4BY2, 0);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case IMM_4:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output + low_byte, R_SH_IMM4, 0);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case IMM_8BY4:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output + low_byte, R_SH_IMM8BY4, 0);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case IMM_8BY2:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output + low_byte, R_SH_IMM8BY2, 0);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case IMM_8:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output + low_byte, R_SH_IMM8, 0);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case PCRELIMM_8BY4:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output, R_SH_PCRELIMM8BY4, 1);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case PCRELIMM_8BY2:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
insert (output, R_SH_PCRELIMM8BY2, 1);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
printf ("failed for %d\n", i);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
1994-12-17 09:05:10 +08:00
|
|
|
|
if (shl) {
|
|
|
|
|
output[1] = (nbuf[0] << 4) | (nbuf[1]);
|
|
|
|
|
output[0] = (nbuf[2] << 4) | (nbuf[3]);
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
output[0] = (nbuf[0] << 4) | (nbuf[1]);
|
|
|
|
|
output[1] = (nbuf[2] << 4) | (nbuf[3]);
|
|
|
|
|
}
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* 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.
|
1994-09-08 08:38:17 +08:00
|
|
|
|
*/
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
md_assemble (str)
|
|
|
|
|
char *str;
|
|
|
|
|
{
|
|
|
|
|
unsigned char *op_start;
|
|
|
|
|
unsigned char *op_end;
|
|
|
|
|
sh_operand_info operand[2];
|
|
|
|
|
sh_opcode_info *opcode;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
char name[20];
|
1993-07-13 03:42:32 +08:00
|
|
|
|
int nlen = 0;
|
|
|
|
|
/* Drop leading whitespace */
|
|
|
|
|
while (*str == ' ')
|
|
|
|
|
str++;
|
|
|
|
|
|
|
|
|
|
/* find the op code end */
|
1994-09-08 08:38:17 +08:00
|
|
|
|
for (op_start = op_end = (unsigned char *) (str);
|
|
|
|
|
*op_end
|
|
|
|
|
&& nlen < 20
|
|
|
|
|
&& !is_end_of_line[*op_end] && *op_end != ' ';
|
1993-07-13 03:42:32 +08:00
|
|
|
|
op_end++)
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
name[nlen] = op_start[nlen];
|
1993-07-13 03:42:32 +08:00
|
|
|
|
nlen++;
|
|
|
|
|
}
|
|
|
|
|
name[nlen] = 0;
|
|
|
|
|
|
1994-09-08 08:38:17 +08:00
|
|
|
|
if (nlen == 0)
|
1993-07-13 03:42:32 +08:00
|
|
|
|
{
|
|
|
|
|
as_bad ("can't find opcode ");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
opcode = (sh_opcode_info *) hash_find (opcode_hash_control, name);
|
|
|
|
|
|
|
|
|
|
if (opcode == NULL)
|
|
|
|
|
{
|
|
|
|
|
as_bad ("unknown opcode");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (opcode->arg[0] == A_BDISP12
|
|
|
|
|
|| opcode->arg[0] == A_BDISP8)
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
parse_exp (op_end + 1);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
build_relax (opcode);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
if (opcode->arg[0] != A_END)
|
|
|
|
|
{
|
|
|
|
|
get_operands (opcode, op_end, operand);
|
|
|
|
|
}
|
1993-07-13 03:42:32 +08:00
|
|
|
|
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;
|
|
|
|
|
as_bad ("invalid operands for opcode");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
build_Mytes (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");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* 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.
|
1994-09-08 08:38:17 +08:00
|
|
|
|
*/
|
1993-07-13 03:42:32 +08:00
|
|
|
|
char *
|
|
|
|
|
md_atof (type, litP, sizeP)
|
1994-12-17 09:05:10 +08:00
|
|
|
|
int type;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
char *litP;
|
|
|
|
|
int *sizeP;
|
|
|
|
|
{
|
|
|
|
|
int prec;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
LITTLENUM_TYPE words[4];
|
1993-07-13 03:42:32 +08:00
|
|
|
|
char *t;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
int i;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
switch (type)
|
|
|
|
|
{
|
|
|
|
|
case 'f':
|
|
|
|
|
prec = 2;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'd':
|
|
|
|
|
prec = 4;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
*sizeP = 0;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
return "bad call to md_atof";
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
1994-12-17 09:05:10 +08:00
|
|
|
|
|
1993-07-13 03:42:32 +08:00
|
|
|
|
t = atof_ieee (input_line_pointer, type, words);
|
|
|
|
|
if (t)
|
|
|
|
|
input_line_pointer = t;
|
|
|
|
|
|
1994-12-17 09:05:10 +08:00
|
|
|
|
*sizeP = prec * 2;
|
|
|
|
|
|
|
|
|
|
if (shl)
|
1993-07-13 03:42:32 +08:00
|
|
|
|
{
|
1994-12-17 09:05:10 +08:00
|
|
|
|
for (i = prec - 1; i >= 0; i--)
|
|
|
|
|
{
|
|
|
|
|
md_number_to_chars (litP, (valueT) words[i], 2);
|
|
|
|
|
litP += 2;
|
|
|
|
|
}
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
1994-12-17 09:05:10 +08:00
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
for (i = 0; i < prec; i++)
|
|
|
|
|
{
|
|
|
|
|
md_number_to_chars (litP, (valueT) words[i], 2);
|
|
|
|
|
litP += 2;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return NULL;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
1994-12-17 09:05:10 +08:00
|
|
|
|
|
|
|
|
|
|
1994-09-08 08:38:17 +08:00
|
|
|
|
|
|
|
|
|
CONST char *md_shortopts = "";
|
|
|
|
|
struct option md_longopts[] = {
|
1994-12-17 09:05:10 +08:00
|
|
|
|
|
|
|
|
|
#define OPTION_RELAX (OPTION_MD_BASE)
|
|
|
|
|
#define OPTION_LITTLE (OPTION_MD_BASE+1)
|
|
|
|
|
|
1994-09-08 08:38:17 +08:00
|
|
|
|
{"relax", no_argument, NULL, OPTION_RELAX},
|
1994-12-17 09:05:10 +08:00
|
|
|
|
{"little", no_argument, NULL, OPTION_LITTLE},
|
1994-09-08 08:38:17 +08:00
|
|
|
|
{NULL, no_argument, NULL, 0}
|
|
|
|
|
};
|
|
|
|
|
size_t md_longopts_size = sizeof(md_longopts);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
int
|
1994-09-08 08:38:17 +08:00
|
|
|
|
md_parse_option (c, arg)
|
|
|
|
|
int c;
|
|
|
|
|
char *arg;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
switch (c)
|
1993-07-13 03:42:32 +08:00
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
case OPTION_RELAX:
|
1993-07-13 03:42:32 +08:00
|
|
|
|
relax = 1;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
break;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
case OPTION_LITTLE:
|
|
|
|
|
shl = 1;
|
|
|
|
|
break;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
return 0;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
1994-09-08 08:38:17 +08:00
|
|
|
|
|
1993-07-13 03:42:32 +08:00
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
1994-09-08 08:38:17 +08:00
|
|
|
|
void
|
|
|
|
|
md_show_usage (stream)
|
|
|
|
|
FILE *stream;
|
|
|
|
|
{
|
|
|
|
|
fprintf(stream, "\
|
|
|
|
|
SH options:\n\
|
|
|
|
|
-relax alter jump instructions for long displacements\n");
|
|
|
|
|
}
|
|
|
|
|
|
1993-07-13 03:42:32 +08:00
|
|
|
|
int md_short_jump_size;
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
tc_Nout_fix_to_chars ()
|
|
|
|
|
{
|
|
|
|
|
printf ("call to tc_Nout_fix_to_chars \n");
|
|
|
|
|
abort ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
md_create_short_jump (ptr, from_Nddr, to_Nddr, frag, to_symbol)
|
|
|
|
|
char *ptr;
|
|
|
|
|
addressT from_Nddr;
|
|
|
|
|
addressT to_Nddr;
|
|
|
|
|
fragS *frag;
|
|
|
|
|
symbolS *to_symbol;
|
|
|
|
|
{
|
|
|
|
|
as_fatal ("failed sanity check.");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
md_create_long_jump (ptr, from_Nddr, to_Nddr, frag, to_symbol)
|
|
|
|
|
char *ptr;
|
|
|
|
|
addressT from_Nddr, to_Nddr;
|
|
|
|
|
fragS *frag;
|
|
|
|
|
symbolS *to_symbol;
|
|
|
|
|
{
|
|
|
|
|
as_fatal ("failed sanity check.");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
1994-09-08 08:38:17 +08:00
|
|
|
|
called after relaxing, change the frags so they know how big they are
|
|
|
|
|
*/
|
1993-07-13 03:42:32 +08:00
|
|
|
|
void
|
|
|
|
|
md_convert_frag (headers, fragP)
|
|
|
|
|
object_headers *headers;
|
|
|
|
|
fragS *fragP;
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
unsigned char *buffer = (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
|
|
|
|
|
int donerelax = 0;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
int highbyte = shl ? 1 : 0;
|
|
|
|
|
int lowbyte = shl ? 0 : 1;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
int targ_addr = ((fragP->fr_symbol ? S_GET_VALUE (fragP->fr_symbol) : 0) + fragP->fr_offset);
|
|
|
|
|
switch (fragP->fr_subtype)
|
|
|
|
|
{
|
|
|
|
|
case C (COND_JUMP, COND8):
|
|
|
|
|
{
|
|
|
|
|
/* Get the address of the end of the instruction */
|
|
|
|
|
int next_inst = fragP->fr_fix + fragP->fr_address + 2;
|
|
|
|
|
|
|
|
|
|
int disp = targ_addr - next_inst - 2;
|
|
|
|
|
disp /= 2;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
|
1994-12-17 09:05:10 +08:00
|
|
|
|
md_number_to_chars (buffer + lowbyte, disp & 0xff, 1);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
fragP->fr_fix += 2;
|
|
|
|
|
fragP->fr_var = 0;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case C (UNCOND_JUMP, UNCOND12):
|
|
|
|
|
{
|
|
|
|
|
/* Get the address of the end of the instruction */
|
|
|
|
|
int next_inst = fragP->fr_fix + fragP->fr_address + 2;
|
|
|
|
|
|
|
|
|
|
int t;
|
|
|
|
|
int disp = targ_addr - next_inst - 2;
|
|
|
|
|
|
|
|
|
|
disp /= 2;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
t = buffer[highbyte] & 0xf0;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
md_number_to_chars (buffer, disp & 0xfff, 2);
|
1994-12-17 09:05:10 +08:00
|
|
|
|
buffer[highbyte] = (buffer[highbyte] & 0xf) | t;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
fragP->fr_fix += 2;
|
|
|
|
|
fragP->fr_var = 0;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case C (UNCOND_JUMP, UNCOND32):
|
|
|
|
|
case C (UNCOND_JUMP, UNDEF_WORD_DISP):
|
|
|
|
|
{
|
|
|
|
|
/* A jump wont fit in 12 bits, make code which looks like
|
|
|
|
|
bra foo
|
|
|
|
|
mov.w @(0, PC), r14
|
|
|
|
|
.long disp
|
|
|
|
|
foo: bra @r14
|
1994-09-08 08:38:17 +08:00
|
|
|
|
*/
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
int next_inst =
|
|
|
|
|
fragP->fr_fix + fragP->fr_address + UNCOND32_LENGTH;
|
|
|
|
|
|
|
|
|
|
int disp = targ_addr - next_inst;
|
|
|
|
|
int t = buffer[0] & 0x10;
|
|
|
|
|
|
|
|
|
|
disp /= 2;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
abort();
|
|
|
|
|
buffer[highbyte] = 0xa0; /* branch over move and disp */
|
|
|
|
|
buffer[lowbyte] = 3;
|
|
|
|
|
buffer[highbyte+2] = 0xd0 | JREG; /* Build mov insn */
|
|
|
|
|
buffer[lowbyte+2] = 0x00;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
1994-12-17 09:05:10 +08:00
|
|
|
|
buffer[highbyte+4] = 0; /* space for 32 bit jump disp */
|
|
|
|
|
buffer[lowbyte+4] = 0;
|
|
|
|
|
buffer[highbyte+6] = 0;
|
|
|
|
|
buffer[lowbyte+6] = 0;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
1994-12-17 09:05:10 +08:00
|
|
|
|
buffer[highbyte+8] = 0x40 | JREG; /* Build jmp @JREG */
|
|
|
|
|
buffer[lowbyte+8] = t ? 0xb : 0x2b;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
1994-12-17 09:05:10 +08:00
|
|
|
|
buffer[highbyte+10] = 0x20; /* build nop */
|
|
|
|
|
buffer[lowbyte+10] = 0x0b;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
/* Make reloc for the long disp */
|
|
|
|
|
fix_new (fragP,
|
|
|
|
|
fragP->fr_fix + 4,
|
|
|
|
|
4,
|
|
|
|
|
fragP->fr_symbol,
|
|
|
|
|
fragP->fr_offset,
|
|
|
|
|
0,
|
|
|
|
|
R_SH_IMM32);
|
|
|
|
|
fragP->fr_fix += UNCOND32_LENGTH;
|
|
|
|
|
fragP->fr_var = 0;
|
|
|
|
|
donerelax = 1;
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case C (COND_JUMP, COND12):
|
|
|
|
|
{
|
|
|
|
|
/* A bcond won't fit, so turn it into a b!cond; bra disp; nop */
|
|
|
|
|
int next_inst =
|
|
|
|
|
fragP->fr_fix + fragP->fr_address + 6;
|
|
|
|
|
|
|
|
|
|
int disp = targ_addr - next_inst;
|
|
|
|
|
disp /= 2;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
md_number_to_chars (buffer + 2, disp & 0xfff, 2);
|
1994-12-17 09:05:10 +08:00
|
|
|
|
buffer[highbyte] ^= 0x2; /* Toggle T/F bit */
|
|
|
|
|
buffer[lowbyte] = 1; /* branch over jump and nop */
|
|
|
|
|
buffer[highbyte+2] = (buffer[highbyte+2] & 0xf) | 0xa0; /* Build jump insn */
|
|
|
|
|
buffer[lowbyte+5] = 0x20; /* Build nop */
|
|
|
|
|
buffer[lowbyte+5] = 0x0b;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
fragP->fr_fix += 6;
|
|
|
|
|
fragP->fr_var = 0;
|
|
|
|
|
donerelax = 1;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case C (COND_JUMP, COND32):
|
|
|
|
|
case C (COND_JUMP, UNDEF_WORD_DISP):
|
|
|
|
|
{
|
|
|
|
|
/* A bcond won't fit and it won't go into a 12 bit
|
|
|
|
|
displacement either, the code sequence looks like:
|
|
|
|
|
b!cond foop
|
|
|
|
|
mov.w @(n, PC), r14
|
1994-09-08 08:38:17 +08:00
|
|
|
|
jmp @r14
|
1993-07-13 03:42:32 +08:00
|
|
|
|
nop
|
|
|
|
|
.long where
|
|
|
|
|
foop:
|
1994-09-08 08:38:17 +08:00
|
|
|
|
*/
|
1993-07-13 03:42:32 +08:00
|
|
|
|
|
|
|
|
|
int next_inst =
|
|
|
|
|
fragP->fr_fix + fragP->fr_address + COND32_LENGTH;
|
|
|
|
|
|
|
|
|
|
int disp = targ_addr - next_inst;
|
|
|
|
|
disp /= 2;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
abort();
|
1993-07-13 03:42:32 +08:00
|
|
|
|
buffer[0] ^= 0x2; /* Toggle T/F bit */
|
|
|
|
|
#define JREG 14
|
|
|
|
|
buffer[1] = 5; /* branch over mov, jump, nop and ptr */
|
1994-09-08 08:38:17 +08:00
|
|
|
|
buffer[2] = 0xd0 | JREG; /* Build mov insn */
|
1993-07-13 03:42:32 +08:00
|
|
|
|
buffer[3] = 0x2;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
buffer[4] = 0x40 | JREG; /* Build jmp @JREG */
|
1993-07-13 03:42:32 +08:00
|
|
|
|
buffer[5] = 0x0b;
|
|
|
|
|
buffer[6] = 0x20; /* build nop */
|
|
|
|
|
buffer[7] = 0x0b;
|
|
|
|
|
buffer[8] = 0; /* space for 32 bit jump disp */
|
|
|
|
|
buffer[9] = 0;
|
|
|
|
|
buffer[10] = 0;
|
|
|
|
|
buffer[11] = 0;
|
|
|
|
|
buffer[12] = 0;
|
|
|
|
|
buffer[13] = 0;
|
|
|
|
|
/* Make reloc for the long disp */
|
|
|
|
|
fix_new (fragP,
|
|
|
|
|
fragP->fr_fix + 8,
|
|
|
|
|
4,
|
|
|
|
|
fragP->fr_symbol,
|
|
|
|
|
fragP->fr_offset,
|
|
|
|
|
0,
|
|
|
|
|
R_SH_IMM32);
|
|
|
|
|
fragP->fr_fix += COND32_LENGTH;
|
|
|
|
|
fragP->fr_var = 0;
|
|
|
|
|
donerelax = 1;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
abort ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (donerelax && !relax)
|
|
|
|
|
{
|
1995-01-24 03:22:52 +08:00
|
|
|
|
as_warn ("Offset doesn't fit at 0x%lx, trying to get to %s+0x%x",
|
|
|
|
|
(unsigned long) fragP->fr_address,
|
1994-09-08 08:38:17 +08:00
|
|
|
|
fragP->fr_symbol ? S_GET_NAME(fragP->fr_symbol): "",
|
|
|
|
|
targ_addr);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
valueT
|
|
|
|
|
DEFUN (md_section_align, (seg, size),
|
|
|
|
|
segT seg AND
|
|
|
|
|
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;
|
|
|
|
|
int addr = fixP->fx_frag->fr_address + fixP->fx_where;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
int lowbyte = shl ? 0 : 1;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
if (fixP->fx_r_type == 0)
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
if (fixP->fx_size == 2)
|
|
|
|
|
fixP->fx_r_type = R_SH_IMM16;
|
|
|
|
|
else
|
|
|
|
|
fixP->fx_r_type = R_SH_IMM32;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (fixP->fx_r_type)
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
case R_SH_IMM4:
|
|
|
|
|
*buf = (*buf & 0xf0) | (val & 0xf);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_IMM4BY2:
|
|
|
|
|
*buf = (*buf & 0xf0) | ((val >> 1) & 0xf);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_IMM4BY4:
|
|
|
|
|
*buf = (*buf & 0xf0) | ((val >> 2) & 0xf);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_IMM8BY2:
|
|
|
|
|
*buf = val >> 1;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_IMM8BY4:
|
|
|
|
|
*buf = val >> 2;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_IMM8:
|
|
|
|
|
*buf++ = val;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_PCRELIMM8BY4:
|
|
|
|
|
addr &= ~1;
|
1994-09-08 08:38:17 +08:00
|
|
|
|
#if 0
|
1993-07-13 03:42:32 +08:00
|
|
|
|
if (val & 0x3)
|
|
|
|
|
as_warn ("non aligned displacement at %x\n", addr);
|
1994-09-08 08:38:17 +08:00
|
|
|
|
#endif
|
|
|
|
|
/* val -= (addr + 4); */
|
1994-12-17 09:05:10 +08:00
|
|
|
|
if (shl||1)
|
|
|
|
|
val += 1;
|
|
|
|
|
else
|
|
|
|
|
val += 3;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
val /= 4;
|
|
|
|
|
if (val & ~0xff)
|
1995-01-24 03:22:52 +08:00
|
|
|
|
as_warn_where (fixP->fx_file, fixP->fx_line, "pcrel too far");
|
1994-12-17 09:05:10 +08:00
|
|
|
|
buf[lowbyte] = val;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_PCRELIMM8BY2:
|
|
|
|
|
addr &= ~1;
|
1994-12-17 09:05:10 +08:00
|
|
|
|
/* if ((val & 0x1) != shl)
|
|
|
|
|
as_bad ("odd displacement at %x\n", addr);*/
|
1994-09-08 08:38:17 +08:00
|
|
|
|
/* val -= (addr + 4); */
|
1994-12-17 09:05:10 +08:00
|
|
|
|
/* if (!shl)
|
|
|
|
|
val++;*/
|
1993-07-13 03:42:32 +08:00
|
|
|
|
val /= 2;
|
|
|
|
|
if (val & ~0xff)
|
1995-01-24 03:22:52 +08:00
|
|
|
|
as_warn_where (fixP->fx_file, fixP->fx_line, "pcrel too far");
|
1994-12-17 09:05:10 +08:00
|
|
|
|
buf[lowbyte] = val;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case R_SH_IMM32:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
if (shl)
|
|
|
|
|
{
|
|
|
|
|
*buf++ = val >> 0;
|
|
|
|
|
*buf++ = val >> 8;
|
|
|
|
|
*buf++ = val >> 16;
|
|
|
|
|
*buf++ = val >> 24;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
*buf++ = val >> 24;
|
|
|
|
|
*buf++ = val >> 16;
|
|
|
|
|
*buf++ = val >> 8;
|
|
|
|
|
*buf++ = val >> 0;
|
|
|
|
|
}
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
|
1994-09-08 08:38:17 +08:00
|
|
|
|
case R_SH_IMM16:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
if (shl)
|
|
|
|
|
{
|
|
|
|
|
*buf++ = val >> 0;
|
|
|
|
|
*buf++ = val >> 8;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
*buf++ = val >> 8;
|
|
|
|
|
*buf++ = val >> 0;
|
|
|
|
|
}
|
1994-09-08 08:38:17 +08:00
|
|
|
|
break;
|
|
|
|
|
|
1993-07-13 03:42:32 +08:00
|
|
|
|
default:
|
|
|
|
|
abort ();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
DEFUN (md_operand, (expressionP), expressionS * expressionP)
|
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|
|
|
{
|
|
|
|
|
}
|
|
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|
|
|
int md_long_jump_size;
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|
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|
|
/*
|
1994-09-08 08:38:17 +08:00
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|
|
called just before address relaxation, return the length
|
|
|
|
|
by which a fragment must grow to reach it's destination
|
|
|
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|
*/
|
1993-07-13 03:42:32 +08:00
|
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|
|
int
|
|
|
|
|
md_estimate_size_before_relax (fragP, segment_type)
|
|
|
|
|
register fragS *fragP;
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|
|
|
|
register segT segment_type;
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|
|
|
|
{
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|
|
|
|
switch (fragP->fr_subtype)
|
|
|
|
|
{
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|
|
|
|
case C (UNCOND_JUMP, UNDEF_DISP):
|
|
|
|
|
/* used to be a branch to somewhere which was unknown */
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|
|
|
|
if (!fragP->fr_symbol)
|
|
|
|
|
{
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|
|
|
|
fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12);
|
|
|
|
|
fragP->fr_var = md_relax_table[C (UNCOND_JUMP, UNCOND12)].rlx_length;
|
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|
|
|
}
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|
|
else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
|
|
|
|
|
{
|
|
|
|
|
fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12);
|
|
|
|
|
fragP->fr_var = md_relax_table[C (UNCOND_JUMP, UNCOND12)].rlx_length;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
fragP->fr_subtype = C (UNCOND_JUMP, UNDEF_WORD_DISP);
|
|
|
|
|
fragP->fr_var = md_relax_table[C (UNCOND_JUMP, UNCOND32)].rlx_length;
|
|
|
|
|
return md_relax_table[C (UNCOND_JUMP, UNCOND32)].rlx_length;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
abort ();
|
|
|
|
|
case C (COND_JUMP, UNDEF_DISP):
|
|
|
|
|
/* used to be a branch to somewhere which was unknown */
|
|
|
|
|
if (fragP->fr_symbol
|
|
|
|
|
&& S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
|
|
|
|
|
{
|
|
|
|
|
/* Got a symbol and it's defined in this segment, become byte
|
1994-09-08 08:38:17 +08:00
|
|
|
|
sized - maybe it will fix up */
|
1993-07-13 03:42:32 +08:00
|
|
|
|
fragP->fr_subtype = C (COND_JUMP, COND8);
|
|
|
|
|
fragP->fr_var = md_relax_table[C (COND_JUMP, COND8)].rlx_length;
|
|
|
|
|
}
|
|
|
|
|
else if (fragP->fr_symbol)
|
|
|
|
|
{
|
|
|
|
|
/* Its got a segment, but its not ours, so it will always be long */
|
|
|
|
|
fragP->fr_subtype = C (COND_JUMP, UNDEF_WORD_DISP);
|
|
|
|
|
fragP->fr_var = md_relax_table[C (COND_JUMP, COND32)].rlx_length;
|
|
|
|
|
return md_relax_table[C (COND_JUMP, COND32)].rlx_length;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* We know the abs value */
|
|
|
|
|
fragP->fr_subtype = C (COND_JUMP, COND8);
|
|
|
|
|
fragP->fr_var = md_relax_table[C (COND_JUMP, COND8)].rlx_length;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
return fragP->fr_var;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Put number into target byte order */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
md_number_to_chars (ptr, use, nbytes)
|
|
|
|
|
char *ptr;
|
|
|
|
|
valueT use;
|
|
|
|
|
int nbytes;
|
|
|
|
|
{
|
1994-12-17 09:05:10 +08:00
|
|
|
|
if (shl)
|
|
|
|
|
number_to_chars_littleendian (ptr, use, nbytes);
|
|
|
|
|
else
|
|
|
|
|
number_to_chars_bigendian (ptr, use, nbytes);
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
1994-09-08 08:38:17 +08:00
|
|
|
|
|
1993-07-13 03:42:32 +08:00
|
|
|
|
long
|
|
|
|
|
md_pcrel_from (fixP)
|
|
|
|
|
fixS *fixP;
|
|
|
|
|
{
|
1994-09-08 08:38:17 +08:00
|
|
|
|
int gap = fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address - 1 ;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
return gap;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
short
|
|
|
|
|
tc_coff_fix2rtype (fix_ptr)
|
|
|
|
|
fixS *fix_ptr;
|
|
|
|
|
{
|
|
|
|
|
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:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
return R_SH_IMM16;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
case 1:
|
1994-12-17 09:05:10 +08:00
|
|
|
|
return R_SH_IMM8;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
abort ();
|
|
|
|
|
}
|
|
|
|
|
}
|
1994-12-17 09:05:10 +08:00
|
|
|
|
return R_SH_IMM32;
|
1993-07-13 03:42:32 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
tc_coff_sizemachdep (frag)
|
|
|
|
|
fragS *frag;
|
|
|
|
|
{
|
|
|
|
|
return md_relax_table[frag->fr_subtype].rlx_length;
|
|
|
|
|
}
|