2818 lines
68 KiB
C
2818 lines
68 KiB
C
/* tc-mn10300.c -- Assembler code for the Matsushita 10300
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007 Free Software Foundation, Inc.
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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, 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "as.h"
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#include "safe-ctype.h"
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#include "subsegs.h"
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#include "opcode/mn10300.h"
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#include "dwarf2dbg.h"
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/* Structure to hold information about predefined registers. */
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struct reg_name
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{
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const char *name;
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int value;
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};
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/* Generic assembler global variables which must be defined by all
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targets. */
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/* Characters which always start a comment. */
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const char comment_chars[] = "#";
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/* Characters which start a comment at the beginning of a line. */
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const char line_comment_chars[] = ";#";
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/* Characters which may be used to separate multiple commands on a
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single line. */
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const char line_separator_chars[] = ";";
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/* Characters which are used to indicate an exponent in a floating
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point number. */
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const char EXP_CHARS[] = "eE";
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/* Characters which mean that a number is a floating point constant,
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as in 0d1.0. */
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const char FLT_CHARS[] = "dD";
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const relax_typeS md_relax_table[] =
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{
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/* The plus values for the bCC and fBCC instructions in the table below
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are because the branch instruction is translated into a jump
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instruction that is now +2 or +3 bytes further on in memory, and the
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correct size of jump instruction must be selected. */
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/* bCC relaxing */
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{0x7f, -0x80, 2, 1},
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{0x7fff + 2, -0x8000 + 2, 5, 2},
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{0x7fffffff, -0x80000000, 7, 0},
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/* bCC relaxing (uncommon cases for 3byte length instructions) */
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{0x7f, -0x80, 3, 4},
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{0x7fff + 3, -0x8000 + 3, 6, 5},
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{0x7fffffff, -0x80000000, 8, 0},
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/* call relaxing */
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{0x7fff, -0x8000, 5, 7},
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{0x7fffffff, -0x80000000, 7, 0},
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/* calls relaxing */
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{0x7fff, -0x8000, 4, 9},
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{0x7fffffff, -0x80000000, 6, 0},
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/* jmp relaxing */
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{0x7f, -0x80, 2, 11},
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{0x7fff, -0x8000, 3, 12},
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{0x7fffffff, -0x80000000, 5, 0},
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/* fbCC relaxing */
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{0x7f, -0x80, 3, 14},
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{0x7fff + 3, -0x8000 + 3, 6, 15},
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{0x7fffffff, -0x80000000, 8, 0},
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};
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/* Local functions. */
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static void mn10300_insert_operand PARAMS ((unsigned long *, unsigned long *,
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const struct mn10300_operand *,
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offsetT, char *, unsigned,
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unsigned));
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static unsigned long check_operand PARAMS ((unsigned long,
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const struct mn10300_operand *,
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offsetT));
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static int reg_name_search PARAMS ((const struct reg_name *, int, const char *));
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static bfd_boolean data_register_name PARAMS ((expressionS *expressionP));
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static bfd_boolean address_register_name PARAMS ((expressionS *expressionP));
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static bfd_boolean other_register_name PARAMS ((expressionS *expressionP));
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static bfd_boolean r_register_name PARAMS ((expressionS *expressionP));
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static bfd_boolean xr_register_name PARAMS ((expressionS *expressionP));
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static void set_arch_mach PARAMS ((int));
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/* Set linkrelax here to avoid fixups in most sections. */
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int linkrelax = 1;
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static int current_machine;
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/* Fixups. */
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#define MAX_INSN_FIXUPS (5)
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struct mn10300_fixup
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{
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expressionS exp;
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int opindex;
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bfd_reloc_code_real_type reloc;
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};
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struct mn10300_fixup fixups[MAX_INSN_FIXUPS];
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static int fc;
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/* We must store the value of each register operand so that we can
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verify that certain registers do not match. */
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int mn10300_reg_operands[MN10300_MAX_OPERANDS];
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const char *md_shortopts = "";
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struct option md_longopts[] = {
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{NULL, no_argument, NULL, 0}
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};
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size_t md_longopts_size = sizeof (md_longopts);
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/* The target specific pseudo-ops which we support. */
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const pseudo_typeS md_pseudo_table[] =
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{
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{ "am30", set_arch_mach, AM30 },
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{ "am33", set_arch_mach, AM33 },
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{ "am33_2", (void (*) PARAMS ((int))) set_arch_mach, AM33_2 },
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{ "mn10300", set_arch_mach, MN103 },
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{NULL, 0, 0}
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};
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#define HAVE_AM33_2 (current_machine == AM33_2)
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#define HAVE_AM33 (current_machine == AM33 || HAVE_AM33_2)
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#define HAVE_AM30 (current_machine == AM30)
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/* Opcode hash table. */
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static struct hash_control *mn10300_hash;
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/* This table is sorted. Suitable for searching by a binary search. */
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static const struct reg_name data_registers[] =
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{
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{ "d0", 0 },
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{ "d1", 1 },
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{ "d2", 2 },
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{ "d3", 3 },
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};
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#define DATA_REG_NAME_CNT \
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(sizeof (data_registers) / sizeof (struct reg_name))
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static const struct reg_name address_registers[] =
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{
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{ "a0", 0 },
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{ "a1", 1 },
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{ "a2", 2 },
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{ "a3", 3 },
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};
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#define ADDRESS_REG_NAME_CNT \
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(sizeof (address_registers) / sizeof (struct reg_name))
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static const struct reg_name r_registers[] =
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{
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{ "a0", 8 },
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{ "a1", 9 },
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{ "a2", 10 },
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{ "a3", 11 },
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{ "d0", 12 },
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{ "d1", 13 },
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{ "d2", 14 },
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{ "d3", 15 },
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{ "e0", 0 },
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{ "e1", 1 },
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{ "e10", 10 },
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{ "e11", 11 },
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{ "e12", 12 },
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{ "e13", 13 },
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{ "e14", 14 },
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{ "e15", 15 },
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{ "e2", 2 },
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{ "e3", 3 },
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{ "e4", 4 },
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{ "e5", 5 },
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{ "e6", 6 },
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{ "e7", 7 },
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{ "e8", 8 },
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{ "e9", 9 },
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{ "r0", 0 },
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{ "r1", 1 },
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{ "r10", 10 },
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{ "r11", 11 },
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{ "r12", 12 },
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{ "r13", 13 },
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{ "r14", 14 },
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{ "r15", 15 },
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{ "r2", 2 },
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{ "r3", 3 },
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{ "r4", 4 },
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{ "r5", 5 },
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{ "r6", 6 },
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{ "r7", 7 },
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{ "r8", 8 },
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{ "r9", 9 },
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};
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#define R_REG_NAME_CNT \
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(sizeof (r_registers) / sizeof (struct reg_name))
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static const struct reg_name xr_registers[] =
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{
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{ "mcrh", 2 },
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{ "mcrl", 3 },
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{ "mcvf", 4 },
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{ "mdrq", 1 },
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{ "sp", 0 },
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{ "xr0", 0 },
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{ "xr1", 1 },
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{ "xr10", 10 },
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{ "xr11", 11 },
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{ "xr12", 12 },
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{ "xr13", 13 },
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{ "xr14", 14 },
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{ "xr15", 15 },
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{ "xr2", 2 },
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{ "xr3", 3 },
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{ "xr4", 4 },
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{ "xr5", 5 },
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{ "xr6", 6 },
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{ "xr7", 7 },
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{ "xr8", 8 },
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{ "xr9", 9 },
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};
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#define XR_REG_NAME_CNT \
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(sizeof (xr_registers) / sizeof (struct reg_name))
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/* We abuse the `value' field, that would be otherwise unused, to
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encode the architecture on which (access to) the register was
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introduced. FIXME: we should probably warn when we encounter a
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register name when assembling for an architecture that doesn't
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support it, before parsing it as a symbol name. */
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static const struct reg_name other_registers[] =
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{
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{ "epsw", AM33 },
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{ "mdr", 0 },
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{ "pc", AM33 },
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{ "psw", 0 },
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{ "sp", 0 },
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};
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#define OTHER_REG_NAME_CNT \
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(sizeof (other_registers) / sizeof (struct reg_name))
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static const struct reg_name float_registers[] =
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{
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{ "fs0", 0 },
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{ "fs1", 1 },
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{ "fs10", 10 },
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{ "fs11", 11 },
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{ "fs12", 12 },
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{ "fs13", 13 },
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{ "fs14", 14 },
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{ "fs15", 15 },
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{ "fs16", 16 },
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{ "fs17", 17 },
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{ "fs18", 18 },
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{ "fs19", 19 },
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{ "fs2", 2 },
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{ "fs20", 20 },
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{ "fs21", 21 },
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{ "fs22", 22 },
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{ "fs23", 23 },
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{ "fs24", 24 },
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{ "fs25", 25 },
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{ "fs26", 26 },
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{ "fs27", 27 },
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{ "fs28", 28 },
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{ "fs29", 29 },
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{ "fs3", 3 },
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{ "fs30", 30 },
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{ "fs31", 31 },
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{ "fs4", 4 },
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{ "fs5", 5 },
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{ "fs6", 6 },
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{ "fs7", 7 },
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{ "fs8", 8 },
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{ "fs9", 9 },
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};
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#define FLOAT_REG_NAME_CNT \
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(sizeof (float_registers) / sizeof (struct reg_name))
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static const struct reg_name double_registers[] =
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{
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{ "fd0", 0 },
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{ "fd10", 10 },
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{ "fd12", 12 },
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{ "fd14", 14 },
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{ "fd16", 16 },
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{ "fd18", 18 },
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{ "fd2", 2 },
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{ "fd20", 20 },
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{ "fd22", 22 },
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{ "fd24", 24 },
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{ "fd26", 26 },
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{ "fd28", 28 },
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{ "fd30", 30 },
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{ "fd4", 4 },
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{ "fd6", 6 },
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{ "fd8", 8 },
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};
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#define DOUBLE_REG_NAME_CNT \
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(sizeof (double_registers) / sizeof (struct reg_name))
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/* reg_name_search does a binary search of the given register table
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to see if "name" is a valid regiter name. Returns the register
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number from the array on success, or -1 on failure. */
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static int
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reg_name_search (regs, regcount, name)
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const struct reg_name *regs;
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int regcount;
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const char *name;
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{
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int middle, low, high;
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int cmp;
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low = 0;
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high = regcount - 1;
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do
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{
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middle = (low + high) / 2;
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cmp = strcasecmp (name, regs[middle].name);
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if (cmp < 0)
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high = middle - 1;
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else if (cmp > 0)
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low = middle + 1;
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else
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return regs[middle].value;
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}
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while (low <= high);
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return -1;
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}
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/* Summary of register_name().
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*
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* in: Input_line_pointer points to 1st char of operand.
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*
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* out: An expressionS.
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* The operand may have been a register: in this case, X_op == O_register,
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* X_add_number is set to the register number, and truth is returned.
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* Input_line_pointer->(next non-blank) char after operand, or is in
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* its original state.
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*/
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static bfd_boolean
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r_register_name (expressionP)
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expressionS *expressionP;
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{
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int reg_number;
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char *name;
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char *start;
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char c;
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/* Find the spelling of the operand. */
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start = name = input_line_pointer;
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c = get_symbol_end ();
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reg_number = reg_name_search (r_registers, R_REG_NAME_CNT, name);
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/* Put back the delimiting char. */
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*input_line_pointer = c;
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/* Look to see if it's in the register table. */
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if (reg_number >= 0)
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{
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expressionP->X_op = O_register;
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expressionP->X_add_number = reg_number;
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/* Make the rest nice. */
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expressionP->X_add_symbol = NULL;
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expressionP->X_op_symbol = NULL;
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return TRUE;
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}
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/* Reset the line as if we had not done anything. */
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input_line_pointer = start;
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return FALSE;
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}
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/* Summary of register_name().
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*
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* in: Input_line_pointer points to 1st char of operand.
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*
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* out: An expressionS.
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* The operand may have been a register: in this case, X_op == O_register,
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* X_add_number is set to the register number, and truth is returned.
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* Input_line_pointer->(next non-blank) char after operand, or is in
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* its original state.
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*/
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static bfd_boolean
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xr_register_name (expressionP)
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expressionS *expressionP;
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{
|
||
int reg_number;
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||
char *name;
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||
char *start;
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||
char c;
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||
|
||
/* Find the spelling of the operand. */
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start = name = input_line_pointer;
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||
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c = get_symbol_end ();
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reg_number = reg_name_search (xr_registers, XR_REG_NAME_CNT, name);
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||
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/* Put back the delimiting char. */
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||
*input_line_pointer = c;
|
||
|
||
/* Look to see if it's in the register table. */
|
||
if (reg_number >= 0)
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = reg_number;
|
||
|
||
/* Make the rest nice. */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Reset the line as if we had not done anything. */
|
||
input_line_pointer = start;
|
||
return FALSE;
|
||
}
|
||
|
||
/* Summary of register_name().
|
||
*
|
||
* in: Input_line_pointer points to 1st char of operand.
|
||
*
|
||
* out: An expressionS.
|
||
* The operand may have been a register: in this case, X_op == O_register,
|
||
* X_add_number is set to the register number, and truth is returned.
|
||
* Input_line_pointer->(next non-blank) char after operand, or is in
|
||
* its original state.
|
||
*/
|
||
|
||
static bfd_boolean
|
||
data_register_name (expressionP)
|
||
expressionS *expressionP;
|
||
{
|
||
int reg_number;
|
||
char *name;
|
||
char *start;
|
||
char c;
|
||
|
||
/* Find the spelling of the operand. */
|
||
start = name = input_line_pointer;
|
||
|
||
c = get_symbol_end ();
|
||
reg_number = reg_name_search (data_registers, DATA_REG_NAME_CNT, name);
|
||
|
||
/* Put back the delimiting char. */
|
||
*input_line_pointer = c;
|
||
|
||
/* Look to see if it's in the register table. */
|
||
if (reg_number >= 0)
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = reg_number;
|
||
|
||
/* Make the rest nice. */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Reset the line as if we had not done anything. */
|
||
input_line_pointer = start;
|
||
return FALSE;
|
||
}
|
||
|
||
/* Summary of register_name().
|
||
*
|
||
* in: Input_line_pointer points to 1st char of operand.
|
||
*
|
||
* out: An expressionS.
|
||
* The operand may have been a register: in this case, X_op == O_register,
|
||
* X_add_number is set to the register number, and truth is returned.
|
||
* Input_line_pointer->(next non-blank) char after operand, or is in
|
||
* its original state.
|
||
*/
|
||
|
||
static bfd_boolean
|
||
address_register_name (expressionP)
|
||
expressionS *expressionP;
|
||
{
|
||
int reg_number;
|
||
char *name;
|
||
char *start;
|
||
char c;
|
||
|
||
/* Find the spelling of the operand. */
|
||
start = name = input_line_pointer;
|
||
|
||
c = get_symbol_end ();
|
||
reg_number = reg_name_search (address_registers, ADDRESS_REG_NAME_CNT, name);
|
||
|
||
/* Put back the delimiting char. */
|
||
*input_line_pointer = c;
|
||
|
||
/* Look to see if it's in the register table. */
|
||
if (reg_number >= 0)
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = reg_number;
|
||
|
||
/* Make the rest nice. */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Reset the line as if we had not done anything. */
|
||
input_line_pointer = start;
|
||
return FALSE;
|
||
}
|
||
|
||
/* Summary of register_name().
|
||
*
|
||
* in: Input_line_pointer points to 1st char of operand.
|
||
*
|
||
* out: An expressionS.
|
||
* The operand may have been a register: in this case, X_op == O_register,
|
||
* X_add_number is set to the register number, and truth is returned.
|
||
* Input_line_pointer->(next non-blank) char after operand, or is in
|
||
* its original state.
|
||
*/
|
||
|
||
static bfd_boolean
|
||
other_register_name (expressionP)
|
||
expressionS *expressionP;
|
||
{
|
||
int reg_number;
|
||
char *name;
|
||
char *start;
|
||
char c;
|
||
|
||
/* Find the spelling of the operand. */
|
||
start = name = input_line_pointer;
|
||
|
||
c = get_symbol_end ();
|
||
reg_number = reg_name_search (other_registers, OTHER_REG_NAME_CNT, name);
|
||
|
||
/* Put back the delimiting char. */
|
||
*input_line_pointer = c;
|
||
|
||
/* Look to see if it's in the register table. */
|
||
if (reg_number == 0
|
||
|| (reg_number == AM33 && HAVE_AM33))
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = 0;
|
||
|
||
/* Make the rest nice. */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Reset the line as if we had not done anything. */
|
||
input_line_pointer = start;
|
||
return FALSE;
|
||
}
|
||
|
||
static bfd_boolean double_register_name PARAMS ((expressionS *));
|
||
static bfd_boolean float_register_name PARAMS ((expressionS *));
|
||
|
||
/* Summary of float_register_name:
|
||
|
||
in: Input_line_pointer points to 1st char of operand.
|
||
|
||
out: A expressionS.
|
||
The operand may have been a register: in this case, X_op == O_register,
|
||
X_add_number is set to the register number, and truth is returned.
|
||
Input_line_pointer->(next non-blank) char after operand, or is in
|
||
its original state. */
|
||
|
||
static bfd_boolean
|
||
float_register_name (expressionP)
|
||
expressionS *expressionP;
|
||
{
|
||
int reg_number;
|
||
char *name;
|
||
char *start;
|
||
char c;
|
||
|
||
/* Find the spelling of the operand. */
|
||
start = name = input_line_pointer;
|
||
|
||
c = get_symbol_end ();
|
||
reg_number = reg_name_search (float_registers, FLOAT_REG_NAME_CNT, name);
|
||
|
||
/* Put back the delimiting char. */
|
||
* input_line_pointer = c;
|
||
|
||
/* Look to see if it's in the register table. */
|
||
if (reg_number >= 0)
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = reg_number;
|
||
|
||
/* Make the rest nice. */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Reset the line as if we had not done anything. */
|
||
input_line_pointer = start;
|
||
return FALSE;
|
||
}
|
||
|
||
/* Summary of double_register_name:
|
||
|
||
in: Input_line_pointer points to 1st char of operand.
|
||
|
||
out: A expressionS.
|
||
The operand may have been a register: in this case, X_op == O_register,
|
||
X_add_number is set to the register number, and truth is returned.
|
||
Input_line_pointer->(next non-blank) char after operand, or is in
|
||
its original state. */
|
||
|
||
static bfd_boolean
|
||
double_register_name (expressionP)
|
||
expressionS *expressionP;
|
||
{
|
||
int reg_number;
|
||
char *name;
|
||
char *start;
|
||
char c;
|
||
|
||
/* Find the spelling of the operand. */
|
||
start = name = input_line_pointer;
|
||
|
||
c = get_symbol_end ();
|
||
reg_number = reg_name_search (double_registers, DOUBLE_REG_NAME_CNT, name);
|
||
|
||
/* Put back the delimiting char. */
|
||
* input_line_pointer = c;
|
||
|
||
/* Look to see if it's in the register table. */
|
||
if (reg_number >= 0)
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = reg_number;
|
||
|
||
/* Make the rest nice. */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Reset the line as if we had not done anything. */
|
||
input_line_pointer = start;
|
||
return FALSE;
|
||
}
|
||
|
||
void
|
||
md_show_usage (stream)
|
||
FILE *stream;
|
||
{
|
||
fprintf (stream, _("MN10300 assembler options:\n\
|
||
none yet\n"));
|
||
}
|
||
|
||
int
|
||
md_parse_option (c, arg)
|
||
int c ATTRIBUTE_UNUSED;
|
||
char *arg ATTRIBUTE_UNUSED;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
symbolS *
|
||
md_undefined_symbol (name)
|
||
char *name ATTRIBUTE_UNUSED;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
char *
|
||
md_atof (type, litp, sizep)
|
||
int type;
|
||
char *litp;
|
||
int *sizep;
|
||
{
|
||
int prec;
|
||
LITTLENUM_TYPE words[4];
|
||
char *t;
|
||
int i;
|
||
|
||
switch (type)
|
||
{
|
||
case 'f':
|
||
prec = 2;
|
||
break;
|
||
|
||
case 'd':
|
||
prec = 4;
|
||
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 * 2;
|
||
|
||
for (i = prec - 1; i >= 0; i--)
|
||
{
|
||
md_number_to_chars (litp, (valueT) words[i], 2);
|
||
litp += 2;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
void
|
||
md_convert_frag (abfd, sec, fragP)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
asection *sec;
|
||
fragS *fragP;
|
||
{
|
||
static unsigned long label_count = 0;
|
||
char buf[40];
|
||
|
||
subseg_change (sec, 0);
|
||
if (fragP->fr_subtype == 0)
|
||
{
|
||
fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 2;
|
||
}
|
||
else if (fragP->fr_subtype == 1)
|
||
{
|
||
/* Reverse the condition of the first branch. */
|
||
int offset = fragP->fr_fix;
|
||
int opcode = fragP->fr_literal[offset] & 0xff;
|
||
|
||
switch (opcode)
|
||
{
|
||
case 0xc8:
|
||
opcode = 0xc9;
|
||
break;
|
||
case 0xc9:
|
||
opcode = 0xc8;
|
||
break;
|
||
case 0xc0:
|
||
opcode = 0xc2;
|
||
break;
|
||
case 0xc2:
|
||
opcode = 0xc0;
|
||
break;
|
||
case 0xc3:
|
||
opcode = 0xc1;
|
||
break;
|
||
case 0xc1:
|
||
opcode = 0xc3;
|
||
break;
|
||
case 0xc4:
|
||
opcode = 0xc6;
|
||
break;
|
||
case 0xc6:
|
||
opcode = 0xc4;
|
||
break;
|
||
case 0xc7:
|
||
opcode = 0xc5;
|
||
break;
|
||
case 0xc5:
|
||
opcode = 0xc7;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
fragP->fr_literal[offset] = opcode;
|
||
|
||
/* Create a fixup for the reversed conditional branch. */
|
||
sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
|
||
fix_new (fragP, fragP->fr_fix + 1, 1,
|
||
symbol_new (buf, sec, 0, fragP->fr_next),
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL);
|
||
|
||
/* Now create the unconditional branch + fixup to the
|
||
final target. */
|
||
fragP->fr_literal[offset + 2] = 0xcc;
|
||
fix_new (fragP, fragP->fr_fix + 3, 2, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 5;
|
||
}
|
||
else if (fragP->fr_subtype == 2)
|
||
{
|
||
/* Reverse the condition of the first branch. */
|
||
int offset = fragP->fr_fix;
|
||
int opcode = fragP->fr_literal[offset] & 0xff;
|
||
|
||
switch (opcode)
|
||
{
|
||
case 0xc8:
|
||
opcode = 0xc9;
|
||
break;
|
||
case 0xc9:
|
||
opcode = 0xc8;
|
||
break;
|
||
case 0xc0:
|
||
opcode = 0xc2;
|
||
break;
|
||
case 0xc2:
|
||
opcode = 0xc0;
|
||
break;
|
||
case 0xc3:
|
||
opcode = 0xc1;
|
||
break;
|
||
case 0xc1:
|
||
opcode = 0xc3;
|
||
break;
|
||
case 0xc4:
|
||
opcode = 0xc6;
|
||
break;
|
||
case 0xc6:
|
||
opcode = 0xc4;
|
||
break;
|
||
case 0xc7:
|
||
opcode = 0xc5;
|
||
break;
|
||
case 0xc5:
|
||
opcode = 0xc7;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
fragP->fr_literal[offset] = opcode;
|
||
|
||
/* Create a fixup for the reversed conditional branch. */
|
||
sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
|
||
fix_new (fragP, fragP->fr_fix + 1, 1,
|
||
symbol_new (buf, sec, 0, fragP->fr_next),
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL);
|
||
|
||
/* Now create the unconditional branch + fixup to the
|
||
final target. */
|
||
fragP->fr_literal[offset + 2] = 0xdc;
|
||
fix_new (fragP, fragP->fr_fix + 3, 4, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 7;
|
||
}
|
||
else if (fragP->fr_subtype == 3)
|
||
{
|
||
fix_new (fragP, fragP->fr_fix + 2, 1, fragP->fr_symbol,
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 3;
|
||
}
|
||
else if (fragP->fr_subtype == 4)
|
||
{
|
||
/* Reverse the condition of the first branch. */
|
||
int offset = fragP->fr_fix;
|
||
int opcode = fragP->fr_literal[offset + 1] & 0xff;
|
||
|
||
switch (opcode)
|
||
{
|
||
case 0xe8:
|
||
opcode = 0xe9;
|
||
break;
|
||
case 0xe9:
|
||
opcode = 0xe8;
|
||
break;
|
||
case 0xea:
|
||
opcode = 0xeb;
|
||
break;
|
||
case 0xeb:
|
||
opcode = 0xea;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
fragP->fr_literal[offset + 1] = opcode;
|
||
|
||
/* Create a fixup for the reversed conditional branch. */
|
||
sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
|
||
fix_new (fragP, fragP->fr_fix + 2, 1,
|
||
symbol_new (buf, sec, 0, fragP->fr_next),
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL);
|
||
|
||
/* Now create the unconditional branch + fixup to the
|
||
final target. */
|
||
fragP->fr_literal[offset + 3] = 0xcc;
|
||
fix_new (fragP, fragP->fr_fix + 4, 2, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 6;
|
||
}
|
||
else if (fragP->fr_subtype == 5)
|
||
{
|
||
/* Reverse the condition of the first branch. */
|
||
int offset = fragP->fr_fix;
|
||
int opcode = fragP->fr_literal[offset + 1] & 0xff;
|
||
|
||
switch (opcode)
|
||
{
|
||
case 0xe8:
|
||
opcode = 0xe9;
|
||
break;
|
||
case 0xea:
|
||
opcode = 0xeb;
|
||
break;
|
||
case 0xeb:
|
||
opcode = 0xea;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
fragP->fr_literal[offset + 1] = opcode;
|
||
|
||
/* Create a fixup for the reversed conditional branch. */
|
||
sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
|
||
fix_new (fragP, fragP->fr_fix + 2, 1,
|
||
symbol_new (buf, sec, 0, fragP->fr_next),
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL);
|
||
|
||
/* Now create the unconditional branch + fixup to the
|
||
final target. */
|
||
fragP->fr_literal[offset + 3] = 0xdc;
|
||
fix_new (fragP, fragP->fr_fix + 4, 4, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 8;
|
||
}
|
||
else if (fragP->fr_subtype == 6)
|
||
{
|
||
int offset = fragP->fr_fix;
|
||
fragP->fr_literal[offset] = 0xcd;
|
||
fix_new (fragP, fragP->fr_fix + 1, 2, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 5;
|
||
}
|
||
else if (fragP->fr_subtype == 7)
|
||
{
|
||
int offset = fragP->fr_fix;
|
||
fragP->fr_literal[offset] = 0xdd;
|
||
fragP->fr_literal[offset + 5] = fragP->fr_literal[offset + 3];
|
||
fragP->fr_literal[offset + 6] = fragP->fr_literal[offset + 4];
|
||
|
||
fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 7;
|
||
}
|
||
else if (fragP->fr_subtype == 8)
|
||
{
|
||
int offset = fragP->fr_fix;
|
||
fragP->fr_literal[offset] = 0xfa;
|
||
fragP->fr_literal[offset + 1] = 0xff;
|
||
fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol,
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_16_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 4;
|
||
}
|
||
else if (fragP->fr_subtype == 9)
|
||
{
|
||
int offset = fragP->fr_fix;
|
||
fragP->fr_literal[offset] = 0xfc;
|
||
fragP->fr_literal[offset + 1] = 0xff;
|
||
|
||
fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_32_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 6;
|
||
}
|
||
else if (fragP->fr_subtype == 10)
|
||
{
|
||
fragP->fr_literal[fragP->fr_fix] = 0xca;
|
||
fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 2;
|
||
}
|
||
else if (fragP->fr_subtype == 11)
|
||
{
|
||
int offset = fragP->fr_fix;
|
||
fragP->fr_literal[offset] = 0xcc;
|
||
|
||
fix_new (fragP, fragP->fr_fix + 1, 2, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 3;
|
||
}
|
||
else if (fragP->fr_subtype == 12)
|
||
{
|
||
int offset = fragP->fr_fix;
|
||
fragP->fr_literal[offset] = 0xdc;
|
||
|
||
fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 5;
|
||
}
|
||
else if (fragP->fr_subtype == 13)
|
||
{
|
||
fix_new (fragP, fragP->fr_fix + 2, 1, fragP->fr_symbol,
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 3;
|
||
}
|
||
else if (fragP->fr_subtype == 14)
|
||
{
|
||
/* Reverse the condition of the first branch. */
|
||
int offset = fragP->fr_fix;
|
||
int opcode = fragP->fr_literal[offset + 1] & 0xff;
|
||
|
||
switch (opcode)
|
||
{
|
||
case 0xd0:
|
||
opcode = 0xd1;
|
||
break;
|
||
case 0xd1:
|
||
opcode = 0xd0;
|
||
break;
|
||
case 0xd2:
|
||
opcode = 0xdc;
|
||
break;
|
||
case 0xd3:
|
||
opcode = 0xdb;
|
||
break;
|
||
case 0xd4:
|
||
opcode = 0xda;
|
||
break;
|
||
case 0xd5:
|
||
opcode = 0xd9;
|
||
break;
|
||
case 0xd6:
|
||
opcode = 0xd8;
|
||
break;
|
||
case 0xd7:
|
||
opcode = 0xdd;
|
||
break;
|
||
case 0xd8:
|
||
opcode = 0xd6;
|
||
break;
|
||
case 0xd9:
|
||
opcode = 0xd5;
|
||
break;
|
||
case 0xda:
|
||
opcode = 0xd4;
|
||
break;
|
||
case 0xdb:
|
||
opcode = 0xd3;
|
||
break;
|
||
case 0xdc:
|
||
opcode = 0xd2;
|
||
break;
|
||
case 0xdd:
|
||
opcode = 0xd7;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
fragP->fr_literal[offset + 1] = opcode;
|
||
|
||
/* Create a fixup for the reversed conditional branch. */
|
||
sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
|
||
fix_new (fragP, fragP->fr_fix + 2, 1,
|
||
symbol_new (buf, sec, 0, fragP->fr_next),
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL);
|
||
|
||
/* Now create the unconditional branch + fixup to the
|
||
final target. */
|
||
fragP->fr_literal[offset + 3] = 0xcc;
|
||
fix_new (fragP, fragP->fr_fix + 4, 2, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 6;
|
||
}
|
||
else if (fragP->fr_subtype == 15)
|
||
{
|
||
/* Reverse the condition of the first branch. */
|
||
int offset = fragP->fr_fix;
|
||
int opcode = fragP->fr_literal[offset + 1] & 0xff;
|
||
|
||
switch (opcode)
|
||
{
|
||
case 0xd0:
|
||
opcode = 0xd1;
|
||
break;
|
||
case 0xd1:
|
||
opcode = 0xd0;
|
||
break;
|
||
case 0xd2:
|
||
opcode = 0xdc;
|
||
break;
|
||
case 0xd3:
|
||
opcode = 0xdb;
|
||
break;
|
||
case 0xd4:
|
||
opcode = 0xda;
|
||
break;
|
||
case 0xd5:
|
||
opcode = 0xd9;
|
||
break;
|
||
case 0xd6:
|
||
opcode = 0xd8;
|
||
break;
|
||
case 0xd7:
|
||
opcode = 0xdd;
|
||
break;
|
||
case 0xd8:
|
||
opcode = 0xd6;
|
||
break;
|
||
case 0xd9:
|
||
opcode = 0xd5;
|
||
break;
|
||
case 0xda:
|
||
opcode = 0xd4;
|
||
break;
|
||
case 0xdb:
|
||
opcode = 0xd3;
|
||
break;
|
||
case 0xdc:
|
||
opcode = 0xd2;
|
||
break;
|
||
case 0xdd:
|
||
opcode = 0xd7;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
fragP->fr_literal[offset + 1] = opcode;
|
||
|
||
/* Create a fixup for the reversed conditional branch. */
|
||
sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++);
|
||
fix_new (fragP, fragP->fr_fix + 2, 1,
|
||
symbol_new (buf, sec, 0, fragP->fr_next),
|
||
fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL);
|
||
|
||
/* Now create the unconditional branch + fixup to the
|
||
final target. */
|
||
fragP->fr_literal[offset + 3] = 0xdc;
|
||
fix_new (fragP, fragP->fr_fix + 4, 4, fragP->fr_symbol,
|
||
fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL);
|
||
fragP->fr_var = 0;
|
||
fragP->fr_fix += 8;
|
||
}
|
||
else
|
||
abort ();
|
||
}
|
||
|
||
valueT
|
||
md_section_align (seg, addr)
|
||
asection *seg;
|
||
valueT addr;
|
||
{
|
||
int align = bfd_get_section_alignment (stdoutput, seg);
|
||
return ((addr + (1 << align) - 1) & (-1 << align));
|
||
}
|
||
|
||
void
|
||
md_begin ()
|
||
{
|
||
char *prev_name = "";
|
||
register const struct mn10300_opcode *op;
|
||
|
||
mn10300_hash = hash_new ();
|
||
|
||
/* Insert unique names into hash table. The MN10300 instruction set
|
||
has many identical opcode names that have different opcodes based
|
||
on the operands. This hash table then provides a quick index to
|
||
the first opcode with a particular name in the opcode table. */
|
||
|
||
op = mn10300_opcodes;
|
||
while (op->name)
|
||
{
|
||
if (strcmp (prev_name, op->name))
|
||
{
|
||
prev_name = (char *) op->name;
|
||
hash_insert (mn10300_hash, op->name, (char *) op);
|
||
}
|
||
op++;
|
||
}
|
||
|
||
/* Set the default machine type. */
|
||
#ifdef TE_LINUX
|
||
if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, AM33_2))
|
||
as_warn (_("could not set architecture and machine"));
|
||
|
||
current_machine = AM33_2;
|
||
#else
|
||
if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, MN103))
|
||
as_warn (_("could not set architecture and machine"));
|
||
|
||
current_machine = MN103;
|
||
#endif
|
||
}
|
||
|
||
static symbolS *GOT_symbol;
|
||
|
||
static inline int mn10300_check_fixup PARAMS ((struct mn10300_fixup *));
|
||
static inline int mn10300_PIC_related_p PARAMS ((symbolS *));
|
||
|
||
static inline int
|
||
mn10300_PIC_related_p (sym)
|
||
symbolS *sym;
|
||
{
|
||
expressionS *exp;
|
||
|
||
if (! sym)
|
||
return 0;
|
||
|
||
if (sym == GOT_symbol)
|
||
return 1;
|
||
|
||
exp = symbol_get_value_expression (sym);
|
||
|
||
return (exp->X_op == O_PIC_reloc
|
||
|| mn10300_PIC_related_p (exp->X_add_symbol)
|
||
|| mn10300_PIC_related_p (exp->X_op_symbol));
|
||
}
|
||
|
||
static inline int
|
||
mn10300_check_fixup (fixup)
|
||
struct mn10300_fixup *fixup;
|
||
{
|
||
expressionS *exp = &fixup->exp;
|
||
|
||
repeat:
|
||
switch (exp->X_op)
|
||
{
|
||
case O_add:
|
||
case O_subtract: /* If we're sufficiently unlucky that the label
|
||
and the expression that references it happen
|
||
to end up in different frags, the subtract
|
||
won't be simplified within expression(). */
|
||
/* The PIC-related operand must be the first operand of a sum. */
|
||
if (exp != &fixup->exp || mn10300_PIC_related_p (exp->X_op_symbol))
|
||
return 1;
|
||
|
||
if (exp->X_add_symbol && exp->X_add_symbol == GOT_symbol)
|
||
fixup->reloc = BFD_RELOC_32_GOT_PCREL;
|
||
|
||
exp = symbol_get_value_expression (exp->X_add_symbol);
|
||
goto repeat;
|
||
|
||
case O_symbol:
|
||
if (exp->X_add_symbol && exp->X_add_symbol == GOT_symbol)
|
||
fixup->reloc = BFD_RELOC_32_GOT_PCREL;
|
||
break;
|
||
|
||
case O_PIC_reloc:
|
||
fixup->reloc = exp->X_md;
|
||
exp->X_op = O_symbol;
|
||
if (fixup->reloc == BFD_RELOC_32_PLT_PCREL
|
||
&& fixup->opindex >= 0
|
||
&& (mn10300_operands[fixup->opindex].flags
|
||
& MN10300_OPERAND_RELAX))
|
||
return 1;
|
||
break;
|
||
|
||
default:
|
||
return (mn10300_PIC_related_p (exp->X_add_symbol)
|
||
|| mn10300_PIC_related_p (exp->X_op_symbol));
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
mn10300_cons_fix_new (frag, off, size, exp)
|
||
fragS *frag;
|
||
int off, size;
|
||
expressionS *exp;
|
||
{
|
||
struct mn10300_fixup fixup;
|
||
|
||
fixup.opindex = -1;
|
||
fixup.exp = *exp;
|
||
fixup.reloc = BFD_RELOC_UNUSED;
|
||
|
||
mn10300_check_fixup (&fixup);
|
||
|
||
if (fixup.reloc == BFD_RELOC_MN10300_GOT32)
|
||
switch (size)
|
||
{
|
||
case 2:
|
||
fixup.reloc = BFD_RELOC_MN10300_GOT16;
|
||
break;
|
||
|
||
case 3:
|
||
fixup.reloc = BFD_RELOC_MN10300_GOT24;
|
||
break;
|
||
|
||
case 4:
|
||
break;
|
||
|
||
default:
|
||
goto error;
|
||
}
|
||
else if (fixup.reloc == BFD_RELOC_UNUSED)
|
||
switch (size)
|
||
{
|
||
case 1:
|
||
fixup.reloc = BFD_RELOC_8;
|
||
break;
|
||
|
||
case 2:
|
||
fixup.reloc = BFD_RELOC_16;
|
||
break;
|
||
|
||
case 3:
|
||
fixup.reloc = BFD_RELOC_24;
|
||
break;
|
||
|
||
case 4:
|
||
fixup.reloc = BFD_RELOC_32;
|
||
break;
|
||
|
||
default:
|
||
goto error;
|
||
}
|
||
else if (size != 4)
|
||
{
|
||
error:
|
||
as_bad (_("unsupported BFD relocation size %u"), size);
|
||
fixup.reloc = BFD_RELOC_UNUSED;
|
||
}
|
||
|
||
fix_new_exp (frag, off, size, &fixup.exp, 0, fixup.reloc);
|
||
}
|
||
|
||
void
|
||
md_assemble (str)
|
||
char *str;
|
||
{
|
||
char *s;
|
||
struct mn10300_opcode *opcode;
|
||
struct mn10300_opcode *next_opcode;
|
||
const unsigned char *opindex_ptr;
|
||
int next_opindex, relaxable;
|
||
unsigned long insn, extension, size = 0;
|
||
char *f;
|
||
int i;
|
||
int match;
|
||
|
||
/* Get the opcode. */
|
||
for (s = str; *s != '\0' && !ISSPACE (*s); s++)
|
||
;
|
||
if (*s != '\0')
|
||
*s++ = '\0';
|
||
|
||
/* Find the first opcode with the proper name. */
|
||
opcode = (struct mn10300_opcode *) hash_find (mn10300_hash, str);
|
||
if (opcode == NULL)
|
||
{
|
||
as_bad (_("Unrecognized opcode: `%s'"), str);
|
||
return;
|
||
}
|
||
|
||
str = s;
|
||
while (ISSPACE (*str))
|
||
++str;
|
||
|
||
input_line_pointer = str;
|
||
|
||
for (;;)
|
||
{
|
||
const char *errmsg;
|
||
int op_idx;
|
||
char *hold;
|
||
int extra_shift = 0;
|
||
|
||
errmsg = _("Invalid opcode/operands");
|
||
|
||
/* Reset the array of register operands. */
|
||
memset (mn10300_reg_operands, -1, sizeof (mn10300_reg_operands));
|
||
|
||
relaxable = 0;
|
||
fc = 0;
|
||
match = 0;
|
||
next_opindex = 0;
|
||
insn = opcode->opcode;
|
||
extension = 0;
|
||
|
||
/* If the instruction is not available on the current machine
|
||
then it can not possibly match. */
|
||
if (opcode->machine
|
||
&& !(opcode->machine == AM33_2 && HAVE_AM33_2)
|
||
&& !(opcode->machine == AM33 && HAVE_AM33)
|
||
&& !(opcode->machine == AM30 && HAVE_AM30))
|
||
goto error;
|
||
|
||
for (op_idx = 1, opindex_ptr = opcode->operands;
|
||
*opindex_ptr != 0;
|
||
opindex_ptr++, op_idx++)
|
||
{
|
||
const struct mn10300_operand *operand;
|
||
expressionS ex;
|
||
|
||
if (next_opindex == 0)
|
||
{
|
||
operand = &mn10300_operands[*opindex_ptr];
|
||
}
|
||
else
|
||
{
|
||
operand = &mn10300_operands[next_opindex];
|
||
next_opindex = 0;
|
||
}
|
||
|
||
while (*str == ' ' || *str == ',')
|
||
++str;
|
||
|
||
if (operand->flags & MN10300_OPERAND_RELAX)
|
||
relaxable = 1;
|
||
|
||
/* Gather the operand. */
|
||
hold = input_line_pointer;
|
||
input_line_pointer = str;
|
||
|
||
if (operand->flags & MN10300_OPERAND_PAREN)
|
||
{
|
||
if (*input_line_pointer != ')' && *input_line_pointer != '(')
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
input_line_pointer++;
|
||
goto keep_going;
|
||
}
|
||
/* See if we can match the operands. */
|
||
else if (operand->flags & MN10300_OPERAND_DREG)
|
||
{
|
||
if (!data_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_AREG)
|
||
{
|
||
if (!address_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_SP)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "sp") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_RREG)
|
||
{
|
||
if (!r_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_XRREG)
|
||
{
|
||
if (!xr_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_FSREG)
|
||
{
|
||
if (!float_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_FDREG)
|
||
{
|
||
if (!double_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_FPCR)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "fpcr") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_USP)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "usp") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_SSP)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "ssp") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_MSP)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "msp") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_PC)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "pc") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_EPSW)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "epsw") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_PLUS)
|
||
{
|
||
if (*input_line_pointer != '+')
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
input_line_pointer++;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_PSW)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "psw") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_MDR)
|
||
{
|
||
char *start = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "mdr") != 0)
|
||
{
|
||
*input_line_pointer = c;
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
*input_line_pointer = c;
|
||
goto keep_going;
|
||
}
|
||
else if (operand->flags & MN10300_OPERAND_REG_LIST)
|
||
{
|
||
unsigned int value = 0;
|
||
if (*input_line_pointer != '[')
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
|
||
/* Eat the '['. */
|
||
input_line_pointer++;
|
||
|
||
/* We used to reject a null register list here; however,
|
||
we accept it now so the compiler can emit "call"
|
||
instructions for all calls to named functions.
|
||
|
||
The linker can then fill in the appropriate bits for the
|
||
register list and stack size or change the instruction
|
||
into a "calls" if using "call" is not profitable. */
|
||
while (*input_line_pointer != ']')
|
||
{
|
||
char *start;
|
||
char c;
|
||
|
||
if (*input_line_pointer == ',')
|
||
input_line_pointer++;
|
||
|
||
start = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
if (strcasecmp (start, "d2") == 0)
|
||
{
|
||
value |= 0x80;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (strcasecmp (start, "d3") == 0)
|
||
{
|
||
value |= 0x40;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (strcasecmp (start, "a2") == 0)
|
||
{
|
||
value |= 0x20;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (strcasecmp (start, "a3") == 0)
|
||
{
|
||
value |= 0x10;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (strcasecmp (start, "other") == 0)
|
||
{
|
||
value |= 0x08;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (HAVE_AM33
|
||
&& strcasecmp (start, "exreg0") == 0)
|
||
{
|
||
value |= 0x04;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (HAVE_AM33
|
||
&& strcasecmp (start, "exreg1") == 0)
|
||
{
|
||
value |= 0x02;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (HAVE_AM33
|
||
&& strcasecmp (start, "exother") == 0)
|
||
{
|
||
value |= 0x01;
|
||
*input_line_pointer = c;
|
||
}
|
||
else if (HAVE_AM33
|
||
&& strcasecmp (start, "all") == 0)
|
||
{
|
||
value |= 0xff;
|
||
*input_line_pointer = c;
|
||
}
|
||
else
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
}
|
||
input_line_pointer++;
|
||
mn10300_insert_operand (&insn, &extension, operand,
|
||
value, (char *) NULL, 0, 0);
|
||
goto keep_going;
|
||
|
||
}
|
||
else if (data_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else if (address_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else if (other_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else if (HAVE_AM33 && r_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else if (HAVE_AM33 && xr_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else if (HAVE_AM33_2 && float_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else if (HAVE_AM33_2 && double_register_name (&ex))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else if (*str == ')' || *str == '(')
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
else
|
||
{
|
||
expression (&ex);
|
||
}
|
||
|
||
switch (ex.X_op)
|
||
{
|
||
case O_illegal:
|
||
errmsg = _("illegal operand");
|
||
goto error;
|
||
case O_absent:
|
||
errmsg = _("missing operand");
|
||
goto error;
|
||
case O_register:
|
||
{
|
||
int mask;
|
||
|
||
mask = MN10300_OPERAND_DREG | MN10300_OPERAND_AREG;
|
||
if (HAVE_AM33)
|
||
mask |= MN10300_OPERAND_RREG | MN10300_OPERAND_XRREG;
|
||
if (HAVE_AM33_2)
|
||
mask |= MN10300_OPERAND_FSREG | MN10300_OPERAND_FDREG;
|
||
if ((operand->flags & mask) == 0)
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
|
||
if (opcode->format == FMT_D1 || opcode->format == FMT_S1)
|
||
extra_shift = 8;
|
||
else if (opcode->format == FMT_D2
|
||
|| opcode->format == FMT_D4
|
||
|| opcode->format == FMT_S2
|
||
|| opcode->format == FMT_S4
|
||
|| opcode->format == FMT_S6
|
||
|| opcode->format == FMT_D5)
|
||
extra_shift = 16;
|
||
else if (opcode->format == FMT_D7)
|
||
extra_shift = 8;
|
||
else if (opcode->format == FMT_D8 || opcode->format == FMT_D9)
|
||
extra_shift = 8;
|
||
else
|
||
extra_shift = 0;
|
||
|
||
mn10300_insert_operand (&insn, &extension, operand,
|
||
ex.X_add_number, (char *) NULL,
|
||
0, extra_shift);
|
||
|
||
/* And note the register number in the register array. */
|
||
mn10300_reg_operands[op_idx - 1] = ex.X_add_number;
|
||
break;
|
||
}
|
||
|
||
case O_constant:
|
||
/* If this operand can be promoted, and it doesn't
|
||
fit into the allocated bitfield for this insn,
|
||
then promote it (ie this opcode does not match). */
|
||
if (operand->flags
|
||
& (MN10300_OPERAND_PROMOTE | MN10300_OPERAND_RELAX)
|
||
&& !check_operand (insn, operand, ex.X_add_number))
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
|
||
mn10300_insert_operand (&insn, &extension, operand,
|
||
ex.X_add_number, (char *) NULL,
|
||
0, 0);
|
||
break;
|
||
|
||
default:
|
||
/* If this operand can be promoted, then this opcode didn't
|
||
match since we can't know if it needed promotion! */
|
||
if (operand->flags & MN10300_OPERAND_PROMOTE)
|
||
{
|
||
input_line_pointer = hold;
|
||
str = hold;
|
||
goto error;
|
||
}
|
||
|
||
/* We need to generate a fixup for this expression. */
|
||
if (fc >= MAX_INSN_FIXUPS)
|
||
as_fatal (_("too many fixups"));
|
||
fixups[fc].exp = ex;
|
||
fixups[fc].opindex = *opindex_ptr;
|
||
fixups[fc].reloc = BFD_RELOC_UNUSED;
|
||
if (mn10300_check_fixup (& fixups[fc]))
|
||
goto error;
|
||
++fc;
|
||
break;
|
||
}
|
||
|
||
keep_going:
|
||
str = input_line_pointer;
|
||
input_line_pointer = hold;
|
||
|
||
while (*str == ' ' || *str == ',')
|
||
++str;
|
||
|
||
}
|
||
|
||
/* Make sure we used all the operands! */
|
||
if (*str != ',')
|
||
match = 1;
|
||
|
||
/* If this instruction has registers that must not match, verify
|
||
that they do indeed not match. */
|
||
if (opcode->no_match_operands)
|
||
{
|
||
int i;
|
||
|
||
/* Look at each operand to see if it's marked. */
|
||
for (i = 0; i < MN10300_MAX_OPERANDS; i++)
|
||
{
|
||
if ((1 << i) & opcode->no_match_operands)
|
||
{
|
||
int j;
|
||
|
||
/* operand I is marked. Check that it does not match any
|
||
operands > I which are marked. */
|
||
for (j = i + 1; j < MN10300_MAX_OPERANDS; j++)
|
||
{
|
||
if (((1 << j) & opcode->no_match_operands)
|
||
&& mn10300_reg_operands[i] == mn10300_reg_operands[j])
|
||
{
|
||
errmsg = _("Invalid register specification.");
|
||
match = 0;
|
||
goto error;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
error:
|
||
if (match == 0)
|
||
{
|
||
next_opcode = opcode + 1;
|
||
if (!strcmp (next_opcode->name, opcode->name))
|
||
{
|
||
opcode = next_opcode;
|
||
continue;
|
||
}
|
||
|
||
as_bad ("%s", errmsg);
|
||
return;
|
||
}
|
||
break;
|
||
}
|
||
|
||
while (ISSPACE (*str))
|
||
++str;
|
||
|
||
if (*str != '\0')
|
||
as_bad (_("junk at end of line: `%s'"), str);
|
||
|
||
input_line_pointer = str;
|
||
|
||
/* Determine the size of the instruction. */
|
||
if (opcode->format == FMT_S0)
|
||
size = 1;
|
||
|
||
if (opcode->format == FMT_S1 || opcode->format == FMT_D0)
|
||
size = 2;
|
||
|
||
if (opcode->format == FMT_S2 || opcode->format == FMT_D1)
|
||
size = 3;
|
||
|
||
if (opcode->format == FMT_D6)
|
||
size = 3;
|
||
|
||
if (opcode->format == FMT_D7 || opcode->format == FMT_D10)
|
||
size = 4;
|
||
|
||
if (opcode->format == FMT_D8)
|
||
size = 6;
|
||
|
||
if (opcode->format == FMT_D9)
|
||
size = 7;
|
||
|
||
if (opcode->format == FMT_S4)
|
||
size = 5;
|
||
|
||
if (opcode->format == FMT_S6 || opcode->format == FMT_D5)
|
||
size = 7;
|
||
|
||
if (opcode->format == FMT_D2)
|
||
size = 4;
|
||
|
||
if (opcode->format == FMT_D3)
|
||
size = 5;
|
||
|
||
if (opcode->format == FMT_D4)
|
||
size = 6;
|
||
|
||
if (relaxable && fc > 0)
|
||
{
|
||
/* On a 64-bit host the size of an 'int' is not the same
|
||
as the size of a pointer, so we need a union to convert
|
||
the opindex field of the fr_cgen structure into a char *
|
||
so that it can be stored in the frag. We do not have
|
||
to worry about loosing accuracy as we are not going to
|
||
be even close to the 32bit limit of the int. */
|
||
union
|
||
{
|
||
int opindex;
|
||
char * ptr;
|
||
}
|
||
opindex_converter;
|
||
int type;
|
||
|
||
/* We want to anchor the line info to the previous frag (if
|
||
there isn't one, create it), so that, when the insn is
|
||
resized, we still get the right address for the beginning of
|
||
the region. */
|
||
f = frag_more (0);
|
||
dwarf2_emit_insn (0);
|
||
|
||
/* bCC */
|
||
if (size == 2)
|
||
{
|
||
/* Handle bra specially. Basically treat it like jmp so
|
||
that we automatically handle 8, 16 and 32 bit offsets
|
||
correctly as well as jumps to an undefined address.
|
||
|
||
It is also important to not treat it like other bCC
|
||
instructions since the long forms of bra is different
|
||
from other bCC instructions. */
|
||
if (opcode->opcode == 0xca00)
|
||
type = 10;
|
||
else
|
||
type = 0;
|
||
}
|
||
/* call */
|
||
else if (size == 5)
|
||
type = 6;
|
||
/* calls */
|
||
else if (size == 4)
|
||
type = 8;
|
||
/* jmp */
|
||
else if (size == 3 && opcode->opcode == 0xcc0000)
|
||
type = 10;
|
||
else if (size == 3 && (opcode->opcode & 0xfff000) == 0xf8d000)
|
||
type = 13;
|
||
/* bCC (uncommon cases) */
|
||
else
|
||
type = 3;
|
||
|
||
opindex_converter.opindex = fixups[0].opindex;
|
||
f = frag_var (rs_machine_dependent, 8, 8 - size, type,
|
||
fixups[0].exp.X_add_symbol,
|
||
fixups[0].exp.X_add_number,
|
||
opindex_converter.ptr);
|
||
|
||
/* This is pretty hokey. We basically just care about the
|
||
opcode, so we have to write out the first word big endian.
|
||
|
||
The exception is "call", which has two operands that we
|
||
care about.
|
||
|
||
The first operand (the register list) happens to be in the
|
||
first instruction word, and will be in the right place if
|
||
we output the first word in big endian mode.
|
||
|
||
The second operand (stack size) is in the extension word,
|
||
and we want it to appear as the first character in the extension
|
||
word (as it appears in memory). Luckily, writing the extension
|
||
word in big endian format will do what we want. */
|
||
number_to_chars_bigendian (f, insn, size > 4 ? 4 : size);
|
||
if (size > 8)
|
||
{
|
||
number_to_chars_bigendian (f + 4, extension, 4);
|
||
number_to_chars_bigendian (f + 8, 0, size - 8);
|
||
}
|
||
else if (size > 4)
|
||
number_to_chars_bigendian (f + 4, extension, size - 4);
|
||
}
|
||
else
|
||
{
|
||
/* Allocate space for the instruction. */
|
||
f = frag_more (size);
|
||
|
||
/* Fill in bytes for the instruction. Note that opcode fields
|
||
are written big-endian, 16 & 32bit immediates are written
|
||
little endian. Egad. */
|
||
if (opcode->format == FMT_S0
|
||
|| opcode->format == FMT_S1
|
||
|| opcode->format == FMT_D0
|
||
|| opcode->format == FMT_D6
|
||
|| opcode->format == FMT_D7
|
||
|| opcode->format == FMT_D10
|
||
|| opcode->format == FMT_D1)
|
||
{
|
||
number_to_chars_bigendian (f, insn, size);
|
||
}
|
||
else if (opcode->format == FMT_S2
|
||
&& opcode->opcode != 0xdf0000
|
||
&& opcode->opcode != 0xde0000)
|
||
{
|
||
/* A format S2 instruction that is _not_ "ret" and "retf". */
|
||
number_to_chars_bigendian (f, (insn >> 16) & 0xff, 1);
|
||
number_to_chars_littleendian (f + 1, insn & 0xffff, 2);
|
||
}
|
||
else if (opcode->format == FMT_S2)
|
||
{
|
||
/* This must be a ret or retf, which is written entirely in
|
||
big-endian format. */
|
||
number_to_chars_bigendian (f, insn, 3);
|
||
}
|
||
else if (opcode->format == FMT_S4
|
||
&& opcode->opcode != 0xdc000000)
|
||
{
|
||
/* This must be a format S4 "call" instruction. What a pain. */
|
||
unsigned long temp = (insn >> 8) & 0xffff;
|
||
number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1);
|
||
number_to_chars_littleendian (f + 1, temp, 2);
|
||
number_to_chars_bigendian (f + 3, insn & 0xff, 1);
|
||
number_to_chars_bigendian (f + 4, extension & 0xff, 1);
|
||
}
|
||
else if (opcode->format == FMT_S4)
|
||
{
|
||
/* This must be a format S4 "jmp" instruction. */
|
||
unsigned long temp = ((insn & 0xffffff) << 8) | (extension & 0xff);
|
||
number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1);
|
||
number_to_chars_littleendian (f + 1, temp, 4);
|
||
}
|
||
else if (opcode->format == FMT_S6)
|
||
{
|
||
unsigned long temp = ((insn & 0xffffff) << 8)
|
||
| ((extension >> 16) & 0xff);
|
||
number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1);
|
||
number_to_chars_littleendian (f + 1, temp, 4);
|
||
number_to_chars_bigendian (f + 5, (extension >> 8) & 0xff, 1);
|
||
number_to_chars_bigendian (f + 6, extension & 0xff, 1);
|
||
}
|
||
else if (opcode->format == FMT_D2
|
||
&& opcode->opcode != 0xfaf80000
|
||
&& opcode->opcode != 0xfaf00000
|
||
&& opcode->opcode != 0xfaf40000)
|
||
{
|
||
/* A format D2 instruction where the 16bit immediate is
|
||
really a single 16bit value, not two 8bit values. */
|
||
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
|
||
number_to_chars_littleendian (f + 2, insn & 0xffff, 2);
|
||
}
|
||
else if (opcode->format == FMT_D2)
|
||
{
|
||
/* A format D2 instruction where the 16bit immediate
|
||
is really two 8bit immediates. */
|
||
number_to_chars_bigendian (f, insn, 4);
|
||
}
|
||
else if (opcode->format == FMT_D3)
|
||
{
|
||
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
|
||
number_to_chars_littleendian (f + 2, insn & 0xffff, 2);
|
||
number_to_chars_bigendian (f + 4, extension & 0xff, 1);
|
||
}
|
||
else if (opcode->format == FMT_D4)
|
||
{
|
||
unsigned long temp = ((insn & 0xffff) << 16) | (extension & 0xffff);
|
||
|
||
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
|
||
number_to_chars_littleendian (f + 2, temp, 4);
|
||
}
|
||
else if (opcode->format == FMT_D5)
|
||
{
|
||
unsigned long temp = (((insn & 0xffff) << 16)
|
||
| ((extension >> 8) & 0xffff));
|
||
|
||
number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2);
|
||
number_to_chars_littleendian (f + 2, temp, 4);
|
||
number_to_chars_bigendian (f + 6, extension & 0xff, 1);
|
||
}
|
||
else if (opcode->format == FMT_D8)
|
||
{
|
||
unsigned long temp = ((insn & 0xff) << 16) | (extension & 0xffff);
|
||
|
||
number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3);
|
||
number_to_chars_bigendian (f + 3, (temp & 0xff), 1);
|
||
number_to_chars_littleendian (f + 4, temp >> 8, 2);
|
||
}
|
||
else if (opcode->format == FMT_D9)
|
||
{
|
||
unsigned long temp = ((insn & 0xff) << 24) | (extension & 0xffffff);
|
||
|
||
number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3);
|
||
number_to_chars_littleendian (f + 3, temp, 4);
|
||
}
|
||
|
||
/* Create any fixups. */
|
||
for (i = 0; i < fc; i++)
|
||
{
|
||
const struct mn10300_operand *operand;
|
||
|
||
operand = &mn10300_operands[fixups[i].opindex];
|
||
if (fixups[i].reloc != BFD_RELOC_UNUSED
|
||
&& fixups[i].reloc != BFD_RELOC_32_GOT_PCREL
|
||
&& fixups[i].reloc != BFD_RELOC_32_GOTOFF
|
||
&& fixups[i].reloc != BFD_RELOC_32_PLT_PCREL
|
||
&& fixups[i].reloc != BFD_RELOC_MN10300_GOT32)
|
||
{
|
||
reloc_howto_type *reloc_howto;
|
||
int size;
|
||
int offset;
|
||
fixS *fixP;
|
||
|
||
reloc_howto = bfd_reloc_type_lookup (stdoutput,
|
||
fixups[i].reloc);
|
||
|
||
if (!reloc_howto)
|
||
abort ();
|
||
|
||
size = bfd_get_reloc_size (reloc_howto);
|
||
|
||
if (size < 1 || size > 4)
|
||
abort ();
|
||
|
||
offset = 4 - size;
|
||
fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset,
|
||
size, &fixups[i].exp,
|
||
reloc_howto->pc_relative,
|
||
fixups[i].reloc);
|
||
}
|
||
else
|
||
{
|
||
int reloc, pcrel, reloc_size, offset;
|
||
fixS *fixP;
|
||
|
||
reloc = BFD_RELOC_NONE;
|
||
if (fixups[i].reloc != BFD_RELOC_UNUSED)
|
||
reloc = fixups[i].reloc;
|
||
/* How big is the reloc? Remember SPLIT relocs are
|
||
implicitly 32bits. */
|
||
if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
|
||
reloc_size = 32;
|
||
else if ((operand->flags & MN10300_OPERAND_24BIT) != 0)
|
||
reloc_size = 24;
|
||
else
|
||
reloc_size = operand->bits;
|
||
|
||
/* Is the reloc pc-relative? */
|
||
pcrel = (operand->flags & MN10300_OPERAND_PCREL) != 0;
|
||
if (reloc != BFD_RELOC_NONE)
|
||
pcrel = bfd_reloc_type_lookup (stdoutput, reloc)->pc_relative;
|
||
|
||
offset = size - (reloc_size + operand->shift) / 8;
|
||
|
||
/* Choose a proper BFD relocation type. */
|
||
if (reloc != BFD_RELOC_NONE)
|
||
;
|
||
else if (pcrel)
|
||
{
|
||
if (reloc_size == 32)
|
||
reloc = BFD_RELOC_32_PCREL;
|
||
else if (reloc_size == 16)
|
||
reloc = BFD_RELOC_16_PCREL;
|
||
else if (reloc_size == 8)
|
||
reloc = BFD_RELOC_8_PCREL;
|
||
else
|
||
abort ();
|
||
}
|
||
else
|
||
{
|
||
if (reloc_size == 32)
|
||
reloc = BFD_RELOC_32;
|
||
else if (reloc_size == 16)
|
||
reloc = BFD_RELOC_16;
|
||
else if (reloc_size == 8)
|
||
reloc = BFD_RELOC_8;
|
||
else
|
||
abort ();
|
||
}
|
||
|
||
fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset,
|
||
reloc_size / 8, &fixups[i].exp, pcrel,
|
||
((bfd_reloc_code_real_type) reloc));
|
||
|
||
if (pcrel)
|
||
fixP->fx_offset += offset;
|
||
}
|
||
}
|
||
|
||
dwarf2_emit_insn (size);
|
||
}
|
||
}
|
||
|
||
/* If while processing a fixup, a reloc really needs to be created
|
||
then it is done here. */
|
||
|
||
arelent *
|
||
tc_gen_reloc (seg, fixp)
|
||
asection *seg ATTRIBUTE_UNUSED;
|
||
fixS *fixp;
|
||
{
|
||
arelent *reloc;
|
||
reloc = (arelent *) xmalloc (sizeof (arelent));
|
||
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
|
||
if (reloc->howto == (reloc_howto_type *) NULL)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("reloc %d not supported by object file format"),
|
||
(int) fixp->fx_r_type);
|
||
return NULL;
|
||
}
|
||
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
if (fixp->fx_subsy
|
||
&& S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
|
||
{
|
||
fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy);
|
||
fixp->fx_subsy = 0;
|
||
}
|
||
|
||
if (fixp->fx_addsy && fixp->fx_subsy)
|
||
{
|
||
reloc->sym_ptr_ptr = NULL;
|
||
|
||
/* If we got a difference between two symbols, and the
|
||
subtracted symbol is in the current section, use a
|
||
PC-relative relocation. If both symbols are in the same
|
||
section, the difference would have already been simplified
|
||
to a constant. */
|
||
if (S_GET_SEGMENT (fixp->fx_subsy) == seg)
|
||
{
|
||
reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
|
||
reloc->addend = (reloc->address - S_GET_VALUE (fixp->fx_subsy)
|
||
+ fixp->fx_offset);
|
||
|
||
switch (fixp->fx_r_type)
|
||
{
|
||
case BFD_RELOC_8:
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput,
|
||
BFD_RELOC_8_PCREL);
|
||
return reloc;
|
||
|
||
case BFD_RELOC_16:
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput,
|
||
BFD_RELOC_16_PCREL);
|
||
return reloc;
|
||
|
||
case BFD_RELOC_24:
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput,
|
||
BFD_RELOC_24_PCREL);
|
||
return reloc;
|
||
|
||
case BFD_RELOC_32:
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput,
|
||
BFD_RELOC_32_PCREL);
|
||
return reloc;
|
||
|
||
default:
|
||
/* Try to compute the absolute value below. */
|
||
break;
|
||
}
|
||
}
|
||
|
||
if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy))
|
||
|| S_GET_SEGMENT (fixp->fx_addsy) == undefined_section)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
"Difference of symbols in different sections is not supported");
|
||
}
|
||
else
|
||
{
|
||
char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal;
|
||
|
||
reloc->addend = (S_GET_VALUE (fixp->fx_addsy)
|
||
- S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset);
|
||
|
||
switch (fixp->fx_r_type)
|
||
{
|
||
case BFD_RELOC_8:
|
||
md_number_to_chars (fixpos, reloc->addend, 1);
|
||
break;
|
||
|
||
case BFD_RELOC_16:
|
||
md_number_to_chars (fixpos, reloc->addend, 2);
|
||
break;
|
||
|
||
case BFD_RELOC_24:
|
||
md_number_to_chars (fixpos, reloc->addend, 3);
|
||
break;
|
||
|
||
case BFD_RELOC_32:
|
||
md_number_to_chars (fixpos, reloc->addend, 4);
|
||
break;
|
||
|
||
default:
|
||
reloc->sym_ptr_ptr
|
||
= (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr;
|
||
return reloc;
|
||
}
|
||
}
|
||
|
||
if (reloc->sym_ptr_ptr)
|
||
free (reloc->sym_ptr_ptr);
|
||
free (reloc);
|
||
return NULL;
|
||
}
|
||
else
|
||
{
|
||
reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
|
||
reloc->addend = fixp->fx_offset;
|
||
}
|
||
return reloc;
|
||
}
|
||
|
||
int
|
||
md_estimate_size_before_relax (fragp, seg)
|
||
fragS *fragp;
|
||
asection *seg;
|
||
{
|
||
if (fragp->fr_subtype == 6
|
||
&& (!S_IS_DEFINED (fragp->fr_symbol)
|
||
|| seg != S_GET_SEGMENT (fragp->fr_symbol)))
|
||
fragp->fr_subtype = 7;
|
||
else if (fragp->fr_subtype == 8
|
||
&& (!S_IS_DEFINED (fragp->fr_symbol)
|
||
|| seg != S_GET_SEGMENT (fragp->fr_symbol)))
|
||
fragp->fr_subtype = 9;
|
||
else if (fragp->fr_subtype == 10
|
||
&& (!S_IS_DEFINED (fragp->fr_symbol)
|
||
|| seg != S_GET_SEGMENT (fragp->fr_symbol)))
|
||
fragp->fr_subtype = 12;
|
||
|
||
if (fragp->fr_subtype == 13)
|
||
return 3;
|
||
if (fragp->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0]))
|
||
abort ();
|
||
|
||
return md_relax_table[fragp->fr_subtype].rlx_length;
|
||
}
|
||
|
||
long
|
||
md_pcrel_from (fixp)
|
||
fixS *fixp;
|
||
{
|
||
if (fixp->fx_addsy != (symbolS *) NULL && !S_IS_DEFINED (fixp->fx_addsy))
|
||
{
|
||
/* The symbol is undefined. Let the linker figure it out. */
|
||
return 0;
|
||
}
|
||
return fixp->fx_frag->fr_address + fixp->fx_where;
|
||
}
|
||
|
||
void
|
||
md_apply_fix (fixP, valP, seg)
|
||
fixS * fixP;
|
||
valueT * valP;
|
||
segT seg;
|
||
{
|
||
char * fixpos = fixP->fx_where + fixP->fx_frag->fr_literal;
|
||
int size = 0;
|
||
int value = (int) * valP;
|
||
|
||
assert (fixP->fx_r_type < BFD_RELOC_UNUSED);
|
||
|
||
/* This should never happen. */
|
||
if (seg->flags & SEC_ALLOC)
|
||
abort ();
|
||
|
||
/* The value we are passed in *valuep includes the symbol values.
|
||
If we are doing this relocation the code in write.c is going to
|
||
call bfd_install_relocation, which is also going to use the symbol
|
||
value. That means that if the reloc is fully resolved we want to
|
||
use *valuep since bfd_install_relocation is not being used.
|
||
|
||
However, if the reloc is not fully resolved we do not want to use
|
||
*valuep, and must use fx_offset instead. However, if the reloc
|
||
is PC relative, we do want to use *valuep since it includes the
|
||
result of md_pcrel_from. */
|
||
if (fixP->fx_addsy != (symbolS *) NULL && ! fixP->fx_pcrel)
|
||
value = fixP->fx_offset;
|
||
|
||
/* If the fix is relative to a symbol which is not defined, or not
|
||
in the same segment as the fix, we cannot resolve it here. */
|
||
if (fixP->fx_addsy != NULL
|
||
&& (! S_IS_DEFINED (fixP->fx_addsy)
|
||
|| (S_GET_SEGMENT (fixP->fx_addsy) != seg)))
|
||
{
|
||
fixP->fx_done = 0;
|
||
return;
|
||
}
|
||
|
||
switch (fixP->fx_r_type)
|
||
{
|
||
case BFD_RELOC_8:
|
||
case BFD_RELOC_8_PCREL:
|
||
size = 1;
|
||
break;
|
||
|
||
case BFD_RELOC_16:
|
||
case BFD_RELOC_16_PCREL:
|
||
size = 2;
|
||
break;
|
||
|
||
case BFD_RELOC_32:
|
||
case BFD_RELOC_32_PCREL:
|
||
size = 4;
|
||
break;
|
||
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
fixP->fx_done = 0;
|
||
return;
|
||
|
||
case BFD_RELOC_NONE:
|
||
default:
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("Bad relocation fixup type (%d)"), fixP->fx_r_type);
|
||
}
|
||
|
||
md_number_to_chars (fixpos, value, size);
|
||
|
||
/* If a symbol remains, pass the fixup, as a reloc, onto the linker. */
|
||
if (fixP->fx_addsy == NULL)
|
||
fixP->fx_done = 1;
|
||
}
|
||
|
||
/* Return zero if the fixup in fixp should be left alone and not
|
||
adjusted. */
|
||
|
||
bfd_boolean
|
||
mn10300_fix_adjustable (fixp)
|
||
struct fix *fixp;
|
||
{
|
||
if (TC_FORCE_RELOCATION_LOCAL (fixp))
|
||
return 0;
|
||
|
||
if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|
||
|| fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
|
||
return 0;
|
||
|
||
/* Do not adjust relocations involving symbols in code sections,
|
||
because it breaks linker relaxations. This could be fixed in the
|
||
linker, but this fix is simpler, and it pretty much only affects
|
||
object size a little bit. */
|
||
if (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_CODE)
|
||
return 0;
|
||
|
||
/* Likewise, do not adjust symbols that won't be merged, or debug
|
||
symbols, because they too break relaxation. We do want to adjust
|
||
other mergable symbols, like .rodata, because code relaxations
|
||
need section-relative symbols to properly relax them. */
|
||
if (! (S_GET_SEGMENT(fixp->fx_addsy)->flags & SEC_MERGE))
|
||
return 0;
|
||
if (strncmp (S_GET_SEGMENT (fixp->fx_addsy)->name, ".debug", 6) == 0)
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Insert an operand value into an instruction. */
|
||
|
||
static void
|
||
mn10300_insert_operand (insnp, extensionp, operand, val, file, line, shift)
|
||
unsigned long *insnp;
|
||
unsigned long *extensionp;
|
||
const struct mn10300_operand *operand;
|
||
offsetT val;
|
||
char *file;
|
||
unsigned int line;
|
||
unsigned int shift;
|
||
{
|
||
/* No need to check 32bit operands for a bit. Note that
|
||
MN10300_OPERAND_SPLIT is an implicit 32bit operand. */
|
||
if (operand->bits != 32
|
||
&& (operand->flags & MN10300_OPERAND_SPLIT) == 0)
|
||
{
|
||
long min, max;
|
||
offsetT test;
|
||
int bits;
|
||
|
||
bits = operand->bits;
|
||
if (operand->flags & MN10300_OPERAND_24BIT)
|
||
bits = 24;
|
||
|
||
if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
|
||
{
|
||
max = (1 << (bits - 1)) - 1;
|
||
min = - (1 << (bits - 1));
|
||
}
|
||
else
|
||
{
|
||
max = (1 << bits) - 1;
|
||
min = 0;
|
||
}
|
||
|
||
test = val;
|
||
|
||
if (test < (offsetT) min || test > (offsetT) max)
|
||
as_warn_value_out_of_range (_("operand"), test, (offsetT) min, (offsetT) max, file, line);
|
||
}
|
||
|
||
if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
|
||
{
|
||
*insnp |= (val >> (32 - operand->bits)) & ((1 << operand->bits) - 1);
|
||
*extensionp |= ((val & ((1 << (32 - operand->bits)) - 1))
|
||
<< operand->shift);
|
||
}
|
||
else if ((operand->flags & MN10300_OPERAND_24BIT) != 0)
|
||
{
|
||
*insnp |= (val >> (24 - operand->bits)) & ((1 << operand->bits) - 1);
|
||
*extensionp |= ((val & ((1 << (24 - operand->bits)) - 1))
|
||
<< operand->shift);
|
||
}
|
||
else if ((operand->flags & (MN10300_OPERAND_FSREG | MN10300_OPERAND_FDREG)))
|
||
{
|
||
/* See devo/opcodes/m10300-opc.c just before #define FSM0 for an
|
||
explanation of these variables. Note that FMT-implied shifts
|
||
are not taken into account for FP registers. */
|
||
unsigned long mask_low, mask_high;
|
||
int shl_low, shr_high, shl_high;
|
||
|
||
switch (operand->bits)
|
||
{
|
||
case 5:
|
||
/* Handle regular FP registers. */
|
||
if (operand->shift >= 0)
|
||
{
|
||
/* This is an `m' register. */
|
||
shl_low = operand->shift;
|
||
shl_high = 8 + (8 & shl_low) + (shl_low & 4) / 4;
|
||
}
|
||
else
|
||
{
|
||
/* This is an `n' register. */
|
||
shl_low = -operand->shift;
|
||
shl_high = shl_low / 4;
|
||
}
|
||
|
||
mask_low = 0x0f;
|
||
mask_high = 0x10;
|
||
shr_high = 4;
|
||
break;
|
||
|
||
case 3:
|
||
/* Handle accumulators. */
|
||
shl_low = -operand->shift;
|
||
shl_high = 0;
|
||
mask_low = 0x03;
|
||
mask_high = 0x04;
|
||
shr_high = 2;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
*insnp |= ((((val & mask_high) >> shr_high) << shl_high)
|
||
| ((val & mask_low) << shl_low));
|
||
}
|
||
else if ((operand->flags & MN10300_OPERAND_EXTENDED) == 0)
|
||
{
|
||
*insnp |= (((long) val & ((1 << operand->bits) - 1))
|
||
<< (operand->shift + shift));
|
||
|
||
if ((operand->flags & MN10300_OPERAND_REPEATED) != 0)
|
||
*insnp |= (((long) val & ((1 << operand->bits) - 1))
|
||
<< (operand->shift + shift + operand->bits));
|
||
}
|
||
else
|
||
{
|
||
*extensionp |= (((long) val & ((1 << operand->bits) - 1))
|
||
<< (operand->shift + shift));
|
||
|
||
if ((operand->flags & MN10300_OPERAND_REPEATED) != 0)
|
||
*extensionp |= (((long) val & ((1 << operand->bits) - 1))
|
||
<< (operand->shift + shift + operand->bits));
|
||
}
|
||
}
|
||
|
||
static unsigned long
|
||
check_operand (insn, operand, val)
|
||
unsigned long insn ATTRIBUTE_UNUSED;
|
||
const struct mn10300_operand *operand;
|
||
offsetT val;
|
||
{
|
||
/* No need to check 32bit operands for a bit. Note that
|
||
MN10300_OPERAND_SPLIT is an implicit 32bit operand. */
|
||
if (operand->bits != 32
|
||
&& (operand->flags & MN10300_OPERAND_SPLIT) == 0)
|
||
{
|
||
long min, max;
|
||
offsetT test;
|
||
int bits;
|
||
|
||
bits = operand->bits;
|
||
if (operand->flags & MN10300_OPERAND_24BIT)
|
||
bits = 24;
|
||
|
||
if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
|
||
{
|
||
max = (1 << (bits - 1)) - 1;
|
||
min = - (1 << (bits - 1));
|
||
}
|
||
else
|
||
{
|
||
max = (1 << bits) - 1;
|
||
min = 0;
|
||
}
|
||
|
||
test = val;
|
||
|
||
if (test < (offsetT) min || test > (offsetT) max)
|
||
return 0;
|
||
else
|
||
return 1;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static void
|
||
set_arch_mach (mach)
|
||
int mach;
|
||
{
|
||
if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, mach))
|
||
as_warn (_("could not set architecture and machine"));
|
||
|
||
current_machine = mach;
|
||
}
|
||
|
||
static inline char * mn10300_end_of_match PARAMS ((char *, char *));
|
||
|
||
static inline char *
|
||
mn10300_end_of_match (cont, what)
|
||
char *cont, *what;
|
||
{
|
||
int len = strlen (what);
|
||
|
||
if (strncmp (cont, what, strlen (what)) == 0
|
||
&& ! is_part_of_name (cont[len]))
|
||
return cont + len;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
int
|
||
mn10300_parse_name (name, exprP, mode, nextcharP)
|
||
char const *name;
|
||
expressionS *exprP;
|
||
enum expr_mode mode;
|
||
char *nextcharP;
|
||
{
|
||
char *next = input_line_pointer;
|
||
char *next_end;
|
||
int reloc_type;
|
||
segT segment;
|
||
|
||
exprP->X_op_symbol = NULL;
|
||
|
||
if (strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0)
|
||
{
|
||
if (! GOT_symbol)
|
||
GOT_symbol = symbol_find_or_make (name);
|
||
|
||
exprP->X_add_symbol = GOT_symbol;
|
||
no_suffix:
|
||
/* If we have an absolute symbol or a reg,
|
||
then we know its value now. */
|
||
segment = S_GET_SEGMENT (exprP->X_add_symbol);
|
||
if (mode != expr_defer && segment == absolute_section)
|
||
{
|
||
exprP->X_op = O_constant;
|
||
exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol);
|
||
exprP->X_add_symbol = NULL;
|
||
}
|
||
else if (mode != expr_defer && segment == reg_section)
|
||
{
|
||
exprP->X_op = O_register;
|
||
exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol);
|
||
exprP->X_add_symbol = NULL;
|
||
}
|
||
else
|
||
{
|
||
exprP->X_op = O_symbol;
|
||
exprP->X_add_number = 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
exprP->X_add_symbol = symbol_find_or_make (name);
|
||
|
||
if (*nextcharP != '@')
|
||
goto no_suffix;
|
||
else if ((next_end = mn10300_end_of_match (next + 1, "GOTOFF")))
|
||
reloc_type = BFD_RELOC_32_GOTOFF;
|
||
else if ((next_end = mn10300_end_of_match (next + 1, "GOT")))
|
||
reloc_type = BFD_RELOC_MN10300_GOT32;
|
||
else if ((next_end = mn10300_end_of_match (next + 1, "PLT")))
|
||
reloc_type = BFD_RELOC_32_PLT_PCREL;
|
||
else
|
||
goto no_suffix;
|
||
|
||
*input_line_pointer = *nextcharP;
|
||
input_line_pointer = next_end;
|
||
*nextcharP = *input_line_pointer;
|
||
*input_line_pointer = '\0';
|
||
|
||
exprP->X_op = O_PIC_reloc;
|
||
exprP->X_add_number = 0;
|
||
exprP->X_md = reloc_type;
|
||
|
||
return 1;
|
||
}
|