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khays |
/* tc-m32c.c -- Assembler for the Renesas M32C.
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Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation.
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Contributed by RedHat.
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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 3, 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, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "as.h"
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#include "subsegs.h"
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#include "symcat.h"
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#include "opcodes/m32c-desc.h"
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#include "opcodes/m32c-opc.h"
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#include "cgen.h"
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#include "elf/common.h"
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#include "elf/m32c.h"
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#include "libbfd.h"
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#include "safe-ctype.h"
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/* Structure to hold all of the different components
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describing an individual instruction. */
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typedef struct
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{
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const CGEN_INSN * insn;
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const CGEN_INSN * orig_insn;
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CGEN_FIELDS fields;
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#if CGEN_INT_INSN_P
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CGEN_INSN_INT buffer [1];
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#define INSN_VALUE(buf) (*(buf))
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#else
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unsigned char buffer [CGEN_MAX_INSN_SIZE];
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#define INSN_VALUE(buf) (buf)
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#endif
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char * addr;
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fragS * frag;
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int num_fixups;
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fixS * fixups [GAS_CGEN_MAX_FIXUPS];
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int indices [MAX_OPERAND_INSTANCES];
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}
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m32c_insn;
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#define rl_for(_insn) (CGEN_ATTR_CGEN_INSN_RL_TYPE_VALUE (&((_insn).insn->base->attrs)))
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#define relaxable(_insn) (CGEN_ATTR_CGEN_INSN_RELAXABLE_VALUE (&((_insn).insn->base->attrs)))
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const char comment_chars[] = ";";
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const char line_comment_chars[] = "#";
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const char line_separator_chars[] = "|";
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const char EXP_CHARS[] = "eE";
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const char FLT_CHARS[] = "dD";
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#define M32C_SHORTOPTS ""
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const char * md_shortopts = M32C_SHORTOPTS;
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/* assembler options */
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#define OPTION_CPU_M16C (OPTION_MD_BASE)
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#define OPTION_CPU_M32C (OPTION_MD_BASE + 1)
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#define OPTION_LINKRELAX (OPTION_MD_BASE + 2)
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#define OPTION_H_TICK_HEX (OPTION_MD_BASE + 3)
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struct option md_longopts[] =
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{
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{ "m16c", no_argument, NULL, OPTION_CPU_M16C },
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{ "m32c", no_argument, NULL, OPTION_CPU_M32C },
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{ "relax", no_argument, NULL, OPTION_LINKRELAX },
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{ "h-tick-hex", no_argument, NULL, OPTION_H_TICK_HEX },
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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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/* Default machine */
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#define DEFAULT_MACHINE bfd_mach_m16c
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#define DEFAULT_FLAGS EF_M32C_CPU_M16C
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static unsigned long m32c_mach = bfd_mach_m16c;
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static int cpu_mach = (1 << MACH_M16C);
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static int insn_size;
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static int m32c_relax = 0;
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/* Flags to set in the elf header */
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static flagword m32c_flags = DEFAULT_FLAGS;
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static char default_isa = 1 << (7 - ISA_M16C);
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static CGEN_BITSET m32c_isa = {1, & default_isa};
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static void
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set_isa (enum isa_attr isa_num)
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{
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cgen_bitset_set (& m32c_isa, isa_num);
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}
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static void s_bss (int);
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int
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md_parse_option (int c, char * arg ATTRIBUTE_UNUSED)
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{
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switch (c)
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{
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case OPTION_CPU_M16C:
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m32c_flags = (m32c_flags & ~EF_M32C_CPU_MASK) | EF_M32C_CPU_M16C;
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m32c_mach = bfd_mach_m16c;
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cpu_mach = (1 << MACH_M16C);
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set_isa (ISA_M16C);
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break;
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case OPTION_CPU_M32C:
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m32c_flags = (m32c_flags & ~EF_M32C_CPU_MASK) | EF_M32C_CPU_M32C;
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m32c_mach = bfd_mach_m32c;
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cpu_mach = (1 << MACH_M32C);
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set_isa (ISA_M32C);
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break;
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case OPTION_LINKRELAX:
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m32c_relax = 1;
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break;
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case OPTION_H_TICK_HEX:
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enable_h_tick_hex = 1;
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break;
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default:
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return 0;
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}
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return 1;
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}
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void
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md_show_usage (FILE * stream)
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{
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fprintf (stream, _(" M32C specific command line options:\n"));
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}
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static void
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s_bss (int ignore ATTRIBUTE_UNUSED)
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{
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int temp;
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temp = get_absolute_expression ();
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subseg_set (bss_section, (subsegT) temp);
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demand_empty_rest_of_line ();
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}
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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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{ "bss", s_bss, 0},
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{ "3byte", cons, 3 },
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{ "word", cons, 4 },
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{ NULL, NULL, 0 }
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};
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void
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md_begin (void)
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{
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/* Initialize the `cgen' interface. */
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/* Set the machine number and endian. */
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gas_cgen_cpu_desc = m32c_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, cpu_mach,
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CGEN_CPU_OPEN_ENDIAN,
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CGEN_ENDIAN_BIG,
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CGEN_CPU_OPEN_ISAS, & m32c_isa,
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CGEN_CPU_OPEN_END);
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m32c_cgen_init_asm (gas_cgen_cpu_desc);
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/* This is a callback from cgen to gas to parse operands. */
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cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand);
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/* Set the ELF flags if desired. */
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if (m32c_flags)
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bfd_set_private_flags (stdoutput, m32c_flags);
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/* Set the machine type */
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bfd_default_set_arch_mach (stdoutput, bfd_arch_m32c, m32c_mach);
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insn_size = 0;
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}
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void
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m32c_md_end (void)
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{
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int i, n_nops;
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if (bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE)
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{
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/* Pad with nops for objdump. */
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n_nops = (32 - ((insn_size) % 32)) / 8;
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for (i = 1; i <= n_nops; i++)
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md_assemble ("nop");
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}
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}
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void
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m32c_start_line_hook (void)
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{
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#if 0 /* not necessary....handled in the .cpu file */
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char *s = input_line_pointer;
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char *sg;
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for (s = input_line_pointer ; s && s[0] != '\n'; s++)
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{
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if (s[0] == ':')
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{
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/* Remove :g suffix. Squeeze out blanks. */
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if (s[1] == 'g')
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{
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for (sg = s - 1; sg && sg >= input_line_pointer; sg--)
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{
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sg[2] = sg[0];
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}
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sg[1] = ' ';
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sg[2] = ' ';
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input_line_pointer += 2;
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}
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}
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}
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#endif
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}
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/* Process [[indirect-operands]] in instruction str. */
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static bfd_boolean
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m32c_indirect_operand (char *str)
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{
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char *new_str;
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240 |
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char *s;
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char *ns;
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242 |
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int ns_len;
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char *ns_end;
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244 |
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enum indirect_type {none, relative, absolute} ;
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enum indirect_type indirection [3] = { none, none, none };
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int brace_n [3] = { 0, 0, 0 };
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247 |
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int operand;
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248 |
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249 |
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s = str;
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250 |
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operand = 1;
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251 |
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for (s = str; *s; s++)
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252 |
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{
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253 |
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if (s[0] == ',')
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operand = 2;
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255 |
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/* [abs] where abs is not a0 or a1 */
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256 |
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if (s[1] == '[' && ! (s[2] == 'a' && (s[3] == '0' || s[3] == '1'))
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257 |
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&& (ISBLANK (s[0]) || s[0] == ','))
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258 |
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indirection[operand] = absolute;
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259 |
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if (s[0] == ']' && s[1] == ']')
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260 |
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indirection[operand] = relative;
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261 |
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if (s[0] == '[' && s[1] == '[')
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262 |
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indirection[operand] = relative;
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263 |
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}
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264 |
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265 |
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if (indirection[1] == none && indirection[2] == none)
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266 |
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return FALSE;
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267 |
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268 |
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operand = 1;
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269 |
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ns_len = strlen (str);
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270 |
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new_str = (char*) xmalloc (ns_len);
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271 |
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ns = new_str;
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272 |
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ns_end = ns + ns_len;
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273 |
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|
274 |
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for (s = str; *s; s++)
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275 |
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{
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276 |
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if (s[0] == ',')
|
277 |
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operand = 2;
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278 |
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|
279 |
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if (s[0] == '[' && ! brace_n[operand])
|
280 |
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{
|
281 |
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brace_n[operand] += 1;
|
282 |
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/* Squeeze [[ to [ if this is an indirect operand. */
|
283 |
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if (indirection[operand] != none)
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284 |
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continue;
|
285 |
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}
|
286 |
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|
287 |
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else if (s[0] == '[' && brace_n[operand])
|
288 |
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{
|
289 |
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brace_n[operand] += 1;
|
290 |
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}
|
291 |
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else if (s[0] == ']' && s[1] == ']' && indirection[operand] == relative)
|
292 |
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{
|
293 |
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s += 1; /* skip one ]. */
|
294 |
|
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brace_n[operand] -= 2; /* allow for 2 [. */
|
295 |
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}
|
296 |
|
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else if (s[0] == ']' && indirection[operand] == absolute)
|
297 |
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{
|
298 |
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brace_n[operand] -= 1;
|
299 |
|
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continue; /* skip closing ]. */
|
300 |
|
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}
|
301 |
|
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else if (s[0] == ']')
|
302 |
|
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{
|
303 |
|
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brace_n[operand] -= 1;
|
304 |
|
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}
|
305 |
|
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*ns = s[0];
|
306 |
|
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ns += 1;
|
307 |
|
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if (ns >= ns_end)
|
308 |
|
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return FALSE;
|
309 |
|
|
if (s[0] == 0)
|
310 |
|
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break;
|
311 |
|
|
}
|
312 |
|
|
*ns = '\0';
|
313 |
|
|
for (operand = 1; operand <= 2; operand++)
|
314 |
|
|
if (brace_n[operand])
|
315 |
|
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{
|
316 |
|
|
fprintf (stderr, "Unmatched [[operand-%d]] %d\n", operand, brace_n[operand]);
|
317 |
|
|
}
|
318 |
|
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|
319 |
|
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if (indirection[1] != none && indirection[2] != none)
|
320 |
|
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md_assemble ("src-dest-indirect");
|
321 |
|
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else if (indirection[1] != none)
|
322 |
|
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md_assemble ("src-indirect");
|
323 |
|
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else if (indirection[2] != none)
|
324 |
|
|
md_assemble ("dest-indirect");
|
325 |
|
|
|
326 |
|
|
md_assemble (new_str);
|
327 |
|
|
free (new_str);
|
328 |
|
|
return TRUE;
|
329 |
|
|
}
|
330 |
|
|
|
331 |
|
|
void
|
332 |
|
|
md_assemble (char * str)
|
333 |
|
|
{
|
334 |
|
|
static int last_insn_had_delay_slot = 0;
|
335 |
|
|
m32c_insn insn;
|
336 |
|
|
char * errmsg;
|
337 |
|
|
finished_insnS results;
|
338 |
|
|
int rl_type;
|
339 |
|
|
|
340 |
|
|
if (m32c_mach == bfd_mach_m32c && m32c_indirect_operand (str))
|
341 |
|
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return;
|
342 |
|
|
|
343 |
|
|
/* Initialize GAS's cgen interface for a new instruction. */
|
344 |
|
|
gas_cgen_init_parse ();
|
345 |
|
|
|
346 |
|
|
insn.insn = m32c_cgen_assemble_insn
|
347 |
|
|
(gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, & errmsg);
|
348 |
|
|
|
349 |
|
|
if (!insn.insn)
|
350 |
|
|
{
|
351 |
|
|
as_bad ("%s", errmsg);
|
352 |
|
|
return;
|
353 |
|
|
}
|
354 |
|
|
|
355 |
|
|
results.num_fixups = 0;
|
356 |
|
|
/* Doesn't really matter what we pass for RELAX_P here. */
|
357 |
|
|
gas_cgen_finish_insn (insn.insn, insn.buffer,
|
358 |
|
|
CGEN_FIELDS_BITSIZE (& insn.fields), 1, &results);
|
359 |
|
|
|
360 |
|
|
last_insn_had_delay_slot
|
361 |
|
|
= CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_DELAY_SLOT);
|
362 |
|
|
(void) last_insn_had_delay_slot;
|
363 |
|
|
insn_size = CGEN_INSN_BITSIZE(insn.insn);
|
364 |
|
|
|
365 |
|
|
rl_type = rl_for (insn);
|
366 |
|
|
|
367 |
|
|
/* We have to mark all the jumps, because we need to adjust them
|
368 |
|
|
when we delete bytes, but we only need to mark the displacements
|
369 |
|
|
if they're symbolic - if they're not, we've already picked the
|
370 |
|
|
shortest opcode by now. The linker, however, will still have to
|
371 |
|
|
check any operands to see if they're the displacement type, since
|
372 |
|
|
we don't know (nor record) *which* operands are relaxable. */
|
373 |
|
|
if (m32c_relax
|
374 |
|
|
&& rl_type != RL_TYPE_NONE
|
375 |
|
|
&& (rl_type == RL_TYPE_JUMP || results.num_fixups)
|
376 |
|
|
&& !relaxable (insn))
|
377 |
|
|
{
|
378 |
|
|
int reloc = 0;
|
379 |
|
|
int addend = results.num_fixups + 16 * insn_size/8;
|
380 |
|
|
|
381 |
|
|
switch (rl_for (insn))
|
382 |
|
|
{
|
383 |
|
|
case RL_TYPE_JUMP: reloc = BFD_RELOC_M32C_RL_JUMP; break;
|
384 |
|
|
case RL_TYPE_1ADDR: reloc = BFD_RELOC_M32C_RL_1ADDR; break;
|
385 |
|
|
case RL_TYPE_2ADDR: reloc = BFD_RELOC_M32C_RL_2ADDR; break;
|
386 |
|
|
}
|
387 |
|
|
if (insn.insn->base->num == M32C_INSN_JMP16_S
|
388 |
|
|
|| insn.insn->base->num == M32C_INSN_JMP32_S)
|
389 |
|
|
addend = 0x10;
|
390 |
|
|
|
391 |
|
|
fix_new (results.frag,
|
392 |
|
|
results.addr - results.frag->fr_literal,
|
393 |
|
|
0, abs_section_sym, addend, 0,
|
394 |
|
|
reloc);
|
395 |
|
|
}
|
396 |
|
|
}
|
397 |
|
|
|
398 |
|
|
/* The syntax in the manual says constants begin with '#'.
|
399 |
|
|
We just ignore it. */
|
400 |
|
|
|
401 |
|
|
void
|
402 |
|
|
md_operand (expressionS * exp)
|
403 |
|
|
{
|
404 |
|
|
/* In case of a syntax error, escape back to try next syntax combo. */
|
405 |
|
|
if (exp->X_op == O_absent)
|
406 |
|
|
gas_cgen_md_operand (exp);
|
407 |
|
|
}
|
408 |
|
|
|
409 |
|
|
valueT
|
410 |
|
|
md_section_align (segT segment, valueT size)
|
411 |
|
|
{
|
412 |
|
|
int align = bfd_get_section_alignment (stdoutput, segment);
|
413 |
|
|
return ((size + (1 << align) - 1) & (-1 << align));
|
414 |
|
|
}
|
415 |
|
|
|
416 |
|
|
symbolS *
|
417 |
|
|
md_undefined_symbol (char * name ATTRIBUTE_UNUSED)
|
418 |
|
|
{
|
419 |
|
|
return 0;
|
420 |
|
|
}
|
421 |
|
|
|
422 |
|
|
const relax_typeS md_relax_table[] =
|
423 |
|
|
{
|
424 |
|
|
/* The fields are:
|
425 |
|
|
1) most positive reach of this state,
|
426 |
|
|
2) most negative reach of this state,
|
427 |
|
|
3) how many bytes this mode will have in the variable part of the frag
|
428 |
|
|
4) which index into the table to try if we can't fit into this one. */
|
429 |
|
|
|
430 |
|
|
/* 0 */ { 0, 0, 0, 0 }, /* unused */
|
431 |
|
|
/* 1 */ { 0, 0, 0, 0 }, /* marker for "don't know yet" */
|
432 |
|
|
|
433 |
|
|
/* 2 */ { 127, -128, 2, 3 }, /* jcnd16_5.b */
|
434 |
|
|
/* 3 */ { 32767, -32768, 5, 4 }, /* jcnd16_5.w */
|
435 |
|
|
/* 4 */ { 0, 0, 6, 0 }, /* jcnd16_5.a */
|
436 |
|
|
|
437 |
|
|
/* 5 */ { 127, -128, 2, 6 }, /* jcnd16.b */
|
438 |
|
|
/* 6 */ { 32767, -32768, 5, 7 }, /* jcnd16.w */
|
439 |
|
|
/* 7 */ { 0, 0, 6, 0 }, /* jcnd16.a */
|
440 |
|
|
|
441 |
|
|
/* 8 */ { 8, 1, 1, 9 }, /* jmp16.s */
|
442 |
|
|
/* 9 */ { 127, -128, 2, 10 }, /* jmp16.b */
|
443 |
|
|
/* 10 */ { 32767, -32768, 3, 11 }, /* jmp16.w */
|
444 |
|
|
/* 11 */ { 0, 0, 4, 0 }, /* jmp16.a */
|
445 |
|
|
|
446 |
|
|
/* 12 */ { 127, -128, 2, 13 }, /* jcnd32.b */
|
447 |
|
|
/* 13 */ { 32767, -32768, 5, 14 }, /* jcnd32.w */
|
448 |
|
|
/* 14 */ { 0, 0, 6, 0 }, /* jcnd32.a */
|
449 |
|
|
|
450 |
|
|
/* 15 */ { 8, 1, 1, 16 }, /* jmp32.s */
|
451 |
|
|
/* 16 */ { 127, -128, 2, 17 }, /* jmp32.b */
|
452 |
|
|
/* 17 */ { 32767, -32768, 3, 18 }, /* jmp32.w */
|
453 |
|
|
/* 18 */ { 0, 0, 4, 0 }, /* jmp32.a */
|
454 |
|
|
|
455 |
|
|
/* 19 */ { 32767, -32768, 3, 20 }, /* jsr16.w */
|
456 |
|
|
/* 20 */ { 0, 0, 4, 0 }, /* jsr16.a */
|
457 |
|
|
/* 21 */ { 32767, -32768, 3, 11 }, /* jsr32.w */
|
458 |
|
|
/* 22 */ { 0, 0, 4, 0 }, /* jsr32.a */
|
459 |
|
|
|
460 |
|
|
/* 23 */ { 0, 0, 3, 0 }, /* adjnz pc8 */
|
461 |
|
|
/* 24 */ { 0, 0, 4, 0 }, /* adjnz disp8 pc8 */
|
462 |
|
|
/* 25 */ { 0, 0, 5, 0 }, /* adjnz disp16 pc8 */
|
463 |
|
|
/* 26 */ { 0, 0, 6, 0 } /* adjnz disp24 pc8 */
|
464 |
|
|
};
|
465 |
|
|
|
466 |
|
|
enum {
|
467 |
|
|
M32C_MACRO_JCND16_5_W,
|
468 |
|
|
M32C_MACRO_JCND16_5_A,
|
469 |
|
|
M32C_MACRO_JCND16_W,
|
470 |
|
|
M32C_MACRO_JCND16_A,
|
471 |
|
|
M32C_MACRO_JCND32_W,
|
472 |
|
|
M32C_MACRO_JCND32_A,
|
473 |
|
|
/* the digit is the array index of the pcrel byte */
|
474 |
|
|
M32C_MACRO_ADJNZ_2,
|
475 |
|
|
M32C_MACRO_ADJNZ_3,
|
476 |
|
|
M32C_MACRO_ADJNZ_4,
|
477 |
|
|
M32C_MACRO_ADJNZ_5,
|
478 |
|
|
} M32C_Macros;
|
479 |
|
|
|
480 |
|
|
static struct {
|
481 |
|
|
int insn;
|
482 |
|
|
int bytes;
|
483 |
|
|
int insn_for_extern;
|
484 |
|
|
int pcrel_aim_offset;
|
485 |
|
|
} subtype_mappings[] = {
|
486 |
|
|
/* 0 */ { 0, 0, 0, 0 },
|
487 |
|
|
/* 1 */ { 0, 0, 0, 0 },
|
488 |
|
|
|
489 |
|
|
/* 2 */ { M32C_INSN_JCND16_5, 2, -M32C_MACRO_JCND16_5_A, 1 },
|
490 |
|
|
/* 3 */ { -M32C_MACRO_JCND16_5_W, 5, -M32C_MACRO_JCND16_5_A, 4 },
|
491 |
|
|
/* 4 */ { -M32C_MACRO_JCND16_5_A, 6, -M32C_MACRO_JCND16_5_A, 0 },
|
492 |
|
|
|
493 |
|
|
/* 5 */ { M32C_INSN_JCND16, 3, -M32C_MACRO_JCND16_A, 1 },
|
494 |
|
|
/* 6 */ { -M32C_MACRO_JCND16_W, 6, -M32C_MACRO_JCND16_A, 4 },
|
495 |
|
|
/* 7 */ { -M32C_MACRO_JCND16_A, 7, -M32C_MACRO_JCND16_A, 0 },
|
496 |
|
|
|
497 |
|
|
/* 8 */ { M32C_INSN_JMP16_S, 1, M32C_INSN_JMP16_A, 0 },
|
498 |
|
|
/* 9 */ { M32C_INSN_JMP16_B, 2, M32C_INSN_JMP16_A, 1 },
|
499 |
|
|
/* 10 */ { M32C_INSN_JMP16_W, 3, M32C_INSN_JMP16_A, 2 },
|
500 |
|
|
/* 11 */ { M32C_INSN_JMP16_A, 4, M32C_INSN_JMP16_A, 0 },
|
501 |
|
|
|
502 |
|
|
/* 12 */ { M32C_INSN_JCND32, 2, -M32C_MACRO_JCND32_A, 1 },
|
503 |
|
|
/* 13 */ { -M32C_MACRO_JCND32_W, 5, -M32C_MACRO_JCND32_A, 4 },
|
504 |
|
|
/* 14 */ { -M32C_MACRO_JCND32_A, 6, -M32C_MACRO_JCND32_A, 0 },
|
505 |
|
|
|
506 |
|
|
/* 15 */ { M32C_INSN_JMP32_S, 1, M32C_INSN_JMP32_A, 0 },
|
507 |
|
|
/* 16 */ { M32C_INSN_JMP32_B, 2, M32C_INSN_JMP32_A, 1 },
|
508 |
|
|
/* 17 */ { M32C_INSN_JMP32_W, 3, M32C_INSN_JMP32_A, 2 },
|
509 |
|
|
/* 18 */ { M32C_INSN_JMP32_A, 4, M32C_INSN_JMP32_A, 0 },
|
510 |
|
|
|
511 |
|
|
/* 19 */ { M32C_INSN_JSR16_W, 3, M32C_INSN_JSR16_A, 2 },
|
512 |
|
|
/* 20 */ { M32C_INSN_JSR16_A, 4, M32C_INSN_JSR16_A, 0 },
|
513 |
|
|
/* 21 */ { M32C_INSN_JSR32_W, 3, M32C_INSN_JSR32_A, 2 },
|
514 |
|
|
/* 22 */ { M32C_INSN_JSR32_A, 4, M32C_INSN_JSR32_A, 0 },
|
515 |
|
|
|
516 |
|
|
/* 23 */ { -M32C_MACRO_ADJNZ_2, 3, -M32C_MACRO_ADJNZ_2, 0 },
|
517 |
|
|
/* 24 */ { -M32C_MACRO_ADJNZ_3, 4, -M32C_MACRO_ADJNZ_3, 0 },
|
518 |
|
|
/* 25 */ { -M32C_MACRO_ADJNZ_4, 5, -M32C_MACRO_ADJNZ_4, 0 },
|
519 |
|
|
/* 26 */ { -M32C_MACRO_ADJNZ_5, 6, -M32C_MACRO_ADJNZ_5, 0 }
|
520 |
|
|
};
|
521 |
|
|
#define NUM_MAPPINGS (sizeof (subtype_mappings) / sizeof (subtype_mappings[0]))
|
522 |
|
|
|
523 |
|
|
void
|
524 |
|
|
m32c_prepare_relax_scan (fragS *fragP, offsetT *aim, relax_substateT this_state)
|
525 |
|
|
{
|
526 |
|
|
symbolS *symbolP = fragP->fr_symbol;
|
527 |
|
|
if (symbolP && !S_IS_DEFINED (symbolP))
|
528 |
|
|
*aim = 0;
|
529 |
|
|
/* Adjust for m32c pcrel not being relative to the next opcode. */
|
530 |
|
|
*aim += subtype_mappings[this_state].pcrel_aim_offset;
|
531 |
|
|
}
|
532 |
|
|
|
533 |
|
|
static int
|
534 |
|
|
insn_to_subtype (int inum, const CGEN_INSN *insn)
|
535 |
|
|
{
|
536 |
|
|
unsigned int i;
|
537 |
|
|
|
538 |
|
|
if (insn
|
539 |
|
|
&& (strncmp (insn->base->mnemonic, "adjnz", 5) == 0
|
540 |
|
|
|| strncmp (insn->base->mnemonic, "sbjnz", 5) == 0))
|
541 |
|
|
{
|
542 |
|
|
i = 23 + insn->base->bitsize/8 - 3;
|
543 |
|
|
/*printf("mapping %d used for %s\n", i, insn->base->mnemonic);*/
|
544 |
|
|
return i;
|
545 |
|
|
}
|
546 |
|
|
|
547 |
|
|
for (i=0; i<NUM_MAPPINGS; i++)
|
548 |
|
|
if (inum == subtype_mappings[i].insn)
|
549 |
|
|
{
|
550 |
|
|
/*printf("mapping %d used\n", i);*/
|
551 |
|
|
return i;
|
552 |
|
|
}
|
553 |
|
|
abort ();
|
554 |
|
|
}
|
555 |
|
|
|
556 |
|
|
/* Return an initial guess of the length by which a fragment must grow to
|
557 |
|
|
hold a branch to reach its destination.
|
558 |
|
|
Also updates fr_type/fr_subtype as necessary.
|
559 |
|
|
|
560 |
|
|
Called just before doing relaxation.
|
561 |
|
|
Any symbol that is now undefined will not become defined.
|
562 |
|
|
The guess for fr_var is ACTUALLY the growth beyond fr_fix.
|
563 |
|
|
Whatever we do to grow fr_fix or fr_var contributes to our returned value.
|
564 |
|
|
Although it may not be explicit in the frag, pretend fr_var starts with a
|
565 |
|
|
|
566 |
|
|
|
567 |
|
|
int
|
568 |
|
|
md_estimate_size_before_relax (fragS * fragP, segT segment ATTRIBUTE_UNUSED)
|
569 |
|
|
{
|
570 |
|
|
int where = fragP->fr_opcode - fragP->fr_literal;
|
571 |
|
|
|
572 |
|
|
if (fragP->fr_subtype == 1)
|
573 |
|
|
fragP->fr_subtype = insn_to_subtype (fragP->fr_cgen.insn->base->num, fragP->fr_cgen.insn);
|
574 |
|
|
|
575 |
|
|
if (S_GET_SEGMENT (fragP->fr_symbol) != segment)
|
576 |
|
|
{
|
577 |
|
|
int new_insn;
|
578 |
|
|
|
579 |
|
|
new_insn = subtype_mappings[fragP->fr_subtype].insn_for_extern;
|
580 |
|
|
fragP->fr_subtype = insn_to_subtype (new_insn, 0);
|
581 |
|
|
}
|
582 |
|
|
|
583 |
|
|
if (fragP->fr_cgen.insn->base
|
584 |
|
|
&& fragP->fr_cgen.insn->base->num
|
585 |
|
|
!= subtype_mappings[fragP->fr_subtype].insn
|
586 |
|
|
&& subtype_mappings[fragP->fr_subtype].insn > 0)
|
587 |
|
|
{
|
588 |
|
|
int new_insn= subtype_mappings[fragP->fr_subtype].insn;
|
589 |
|
|
if (new_insn >= 0)
|
590 |
|
|
{
|
591 |
|
|
fragP->fr_cgen.insn = (fragP->fr_cgen.insn
|
592 |
|
|
- fragP->fr_cgen.insn->base->num
|
593 |
|
|
+ new_insn);
|
594 |
|
|
}
|
595 |
|
|
}
|
596 |
|
|
|
597 |
|
|
return subtype_mappings[fragP->fr_subtype].bytes - (fragP->fr_fix - where);
|
598 |
|
|
}
|
599 |
|
|
|
600 |
|
|
/* *fragP has been relaxed to its final size, and now needs to have
|
601 |
|
|
the bytes inside it modified to conform to the new size.
|
602 |
|
|
|
603 |
|
|
Called after relaxation is finished.
|
604 |
|
|
fragP->fr_type == rs_machine_dependent.
|
605 |
|
|
fragP->fr_subtype is the subtype of what the address relaxed to. */
|
606 |
|
|
|
607 |
|
|
static int
|
608 |
|
|
target_address_for (fragS *frag)
|
609 |
|
|
{
|
610 |
|
|
int rv = frag->fr_offset;
|
611 |
|
|
symbolS *sym = frag->fr_symbol;
|
612 |
|
|
|
613 |
|
|
if (sym)
|
614 |
|
|
rv += S_GET_VALUE (sym);
|
615 |
|
|
|
616 |
|
|
/*printf("target_address_for returns %d\n", rv);*/
|
617 |
|
|
return rv;
|
618 |
|
|
}
|
619 |
|
|
|
620 |
|
|
void
|
621 |
|
|
md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,
|
622 |
|
|
segT sec ATTRIBUTE_UNUSED,
|
623 |
|
|
fragS * fragP ATTRIBUTE_UNUSED)
|
624 |
|
|
{
|
625 |
|
|
int addend;
|
626 |
|
|
int operand;
|
627 |
|
|
int where = fragP->fr_opcode - fragP->fr_literal;
|
628 |
|
|
int rl_where = fragP->fr_opcode - fragP->fr_literal;
|
629 |
|
|
unsigned char *op = (unsigned char *)fragP->fr_opcode;
|
630 |
|
|
int rl_addend = 0;
|
631 |
|
|
|
632 |
|
|
addend = target_address_for (fragP) - (fragP->fr_address + where);
|
633 |
|
|
|
634 |
|
|
fragP->fr_fix = where + subtype_mappings[fragP->fr_subtype].bytes;
|
635 |
|
|
|
636 |
|
|
switch (subtype_mappings[fragP->fr_subtype].insn)
|
637 |
|
|
{
|
638 |
|
|
case M32C_INSN_JCND16_5:
|
639 |
|
|
op[1] = addend - 1;
|
640 |
|
|
operand = M32C_OPERAND_LAB_8_8;
|
641 |
|
|
rl_addend = 0x21;
|
642 |
|
|
break;
|
643 |
|
|
|
644 |
|
|
case -M32C_MACRO_JCND16_5_W:
|
645 |
|
|
op[0] ^= 0x04;
|
646 |
|
|
op[1] = 4;
|
647 |
|
|
op[2] = 0xf4;
|
648 |
|
|
op[3] = addend - 3;
|
649 |
|
|
op[4] = (addend - 3) >> 8;
|
650 |
|
|
operand = M32C_OPERAND_LAB_8_16;
|
651 |
|
|
where += 2;
|
652 |
|
|
rl_addend = 0x51;
|
653 |
|
|
break;
|
654 |
|
|
|
655 |
|
|
case -M32C_MACRO_JCND16_5_A:
|
656 |
|
|
op[0] ^= 0x04;
|
657 |
|
|
op[1] = 5;
|
658 |
|
|
op[2] = 0xfc;
|
659 |
|
|
operand = M32C_OPERAND_LAB_8_24;
|
660 |
|
|
where += 2;
|
661 |
|
|
rl_addend = 0x61;
|
662 |
|
|
break;
|
663 |
|
|
|
664 |
|
|
|
665 |
|
|
case M32C_INSN_JCND16:
|
666 |
|
|
op[2] = addend - 2;
|
667 |
|
|
operand = M32C_OPERAND_LAB_16_8;
|
668 |
|
|
rl_addend = 0x31;
|
669 |
|
|
break;
|
670 |
|
|
|
671 |
|
|
case -M32C_MACRO_JCND16_W:
|
672 |
|
|
op[1] ^= 0x04;
|
673 |
|
|
op[2] = 4;
|
674 |
|
|
op[3] = 0xf4;
|
675 |
|
|
op[4] = addend - 4;
|
676 |
|
|
op[5] = (addend - 4) >> 8;
|
677 |
|
|
operand = M32C_OPERAND_LAB_8_16;
|
678 |
|
|
where += 3;
|
679 |
|
|
rl_addend = 0x61;
|
680 |
|
|
break;
|
681 |
|
|
|
682 |
|
|
case -M32C_MACRO_JCND16_A:
|
683 |
|
|
op[1] ^= 0x04;
|
684 |
|
|
op[2] = 5;
|
685 |
|
|
op[3] = 0xfc;
|
686 |
|
|
operand = M32C_OPERAND_LAB_8_24;
|
687 |
|
|
where += 3;
|
688 |
|
|
rl_addend = 0x71;
|
689 |
|
|
break;
|
690 |
|
|
|
691 |
|
|
case M32C_INSN_JMP16_S:
|
692 |
|
|
op[0] = 0x60 | ((addend-2) & 0x07);
|
693 |
|
|
operand = M32C_OPERAND_LAB_5_3;
|
694 |
|
|
rl_addend = 0x10;
|
695 |
|
|
break;
|
696 |
|
|
|
697 |
|
|
case M32C_INSN_JMP16_B:
|
698 |
|
|
op[0] = 0xfe;
|
699 |
|
|
op[1] = addend - 1;
|
700 |
|
|
operand = M32C_OPERAND_LAB_8_8;
|
701 |
|
|
rl_addend = 0x21;
|
702 |
|
|
break;
|
703 |
|
|
|
704 |
|
|
case M32C_INSN_JMP16_W:
|
705 |
|
|
op[0] = 0xf4;
|
706 |
|
|
op[1] = addend - 1;
|
707 |
|
|
op[2] = (addend - 1) >> 8;
|
708 |
|
|
operand = M32C_OPERAND_LAB_8_16;
|
709 |
|
|
rl_addend = 0x31;
|
710 |
|
|
break;
|
711 |
|
|
|
712 |
|
|
case M32C_INSN_JMP16_A:
|
713 |
|
|
op[0] = 0xfc;
|
714 |
|
|
op[1] = 0;
|
715 |
|
|
op[2] = 0;
|
716 |
|
|
op[3] = 0;
|
717 |
|
|
operand = M32C_OPERAND_LAB_8_24;
|
718 |
|
|
rl_addend = 0x41;
|
719 |
|
|
break;
|
720 |
|
|
|
721 |
|
|
case M32C_INSN_JCND32:
|
722 |
|
|
op[1] = addend - 1;
|
723 |
|
|
operand = M32C_OPERAND_LAB_8_8;
|
724 |
|
|
rl_addend = 0x21;
|
725 |
|
|
break;
|
726 |
|
|
|
727 |
|
|
case -M32C_MACRO_JCND32_W:
|
728 |
|
|
op[0] ^= 0x40;
|
729 |
|
|
op[1] = 4;
|
730 |
|
|
op[2] = 0xce;
|
731 |
|
|
op[3] = addend - 3;
|
732 |
|
|
op[4] = (addend - 3) >> 8;
|
733 |
|
|
operand = M32C_OPERAND_LAB_8_16;
|
734 |
|
|
where += 2;
|
735 |
|
|
rl_addend = 0x51;
|
736 |
|
|
break;
|
737 |
|
|
|
738 |
|
|
case -M32C_MACRO_JCND32_A:
|
739 |
|
|
op[0] ^= 0x40;
|
740 |
|
|
op[1] = 5;
|
741 |
|
|
op[2] = 0xcc;
|
742 |
|
|
operand = M32C_OPERAND_LAB_8_24;
|
743 |
|
|
where += 2;
|
744 |
|
|
rl_addend = 0x61;
|
745 |
|
|
break;
|
746 |
|
|
|
747 |
|
|
case M32C_INSN_JMP32_S:
|
748 |
|
|
addend = ((addend-2) & 0x07);
|
749 |
|
|
op[0] = 0x4a | (addend & 0x01) | ((addend << 3) & 0x30);
|
750 |
|
|
operand = M32C_OPERAND_LAB32_JMP_S;
|
751 |
|
|
rl_addend = 0x10;
|
752 |
|
|
break;
|
753 |
|
|
|
754 |
|
|
case M32C_INSN_JMP32_B:
|
755 |
|
|
op[0] = 0xbb;
|
756 |
|
|
op[1] = addend - 1;
|
757 |
|
|
operand = M32C_OPERAND_LAB_8_8;
|
758 |
|
|
rl_addend = 0x21;
|
759 |
|
|
break;
|
760 |
|
|
|
761 |
|
|
case M32C_INSN_JMP32_W:
|
762 |
|
|
op[0] = 0xce;
|
763 |
|
|
op[1] = addend - 1;
|
764 |
|
|
op[2] = (addend - 1) >> 8;
|
765 |
|
|
operand = M32C_OPERAND_LAB_8_16;
|
766 |
|
|
rl_addend = 0x31;
|
767 |
|
|
break;
|
768 |
|
|
|
769 |
|
|
case M32C_INSN_JMP32_A:
|
770 |
|
|
op[0] = 0xcc;
|
771 |
|
|
op[1] = 0;
|
772 |
|
|
op[2] = 0;
|
773 |
|
|
op[3] = 0;
|
774 |
|
|
operand = M32C_OPERAND_LAB_8_24;
|
775 |
|
|
rl_addend = 0x41;
|
776 |
|
|
break;
|
777 |
|
|
|
778 |
|
|
|
779 |
|
|
case M32C_INSN_JSR16_W:
|
780 |
|
|
op[0] = 0xf5;
|
781 |
|
|
op[1] = addend - 1;
|
782 |
|
|
op[2] = (addend - 1) >> 8;
|
783 |
|
|
operand = M32C_OPERAND_LAB_8_16;
|
784 |
|
|
rl_addend = 0x31;
|
785 |
|
|
break;
|
786 |
|
|
|
787 |
|
|
case M32C_INSN_JSR16_A:
|
788 |
|
|
op[0] = 0xfd;
|
789 |
|
|
op[1] = 0;
|
790 |
|
|
op[2] = 0;
|
791 |
|
|
op[3] = 0;
|
792 |
|
|
operand = M32C_OPERAND_LAB_8_24;
|
793 |
|
|
rl_addend = 0x41;
|
794 |
|
|
break;
|
795 |
|
|
|
796 |
|
|
case M32C_INSN_JSR32_W:
|
797 |
|
|
op[0] = 0xcf;
|
798 |
|
|
op[1] = addend - 1;
|
799 |
|
|
op[2] = (addend - 1) >> 8;
|
800 |
|
|
operand = M32C_OPERAND_LAB_8_16;
|
801 |
|
|
rl_addend = 0x31;
|
802 |
|
|
break;
|
803 |
|
|
|
804 |
|
|
case M32C_INSN_JSR32_A:
|
805 |
|
|
op[0] = 0xcd;
|
806 |
|
|
op[1] = 0;
|
807 |
|
|
op[2] = 0;
|
808 |
|
|
op[3] = 0;
|
809 |
|
|
operand = M32C_OPERAND_LAB_8_24;
|
810 |
|
|
rl_addend = 0x41;
|
811 |
|
|
break;
|
812 |
|
|
|
813 |
|
|
case -M32C_MACRO_ADJNZ_2:
|
814 |
|
|
rl_addend = 0x31;
|
815 |
|
|
op[2] = addend - 2;
|
816 |
|
|
operand = M32C_OPERAND_LAB_16_8;
|
817 |
|
|
break;
|
818 |
|
|
case -M32C_MACRO_ADJNZ_3:
|
819 |
|
|
rl_addend = 0x41;
|
820 |
|
|
op[3] = addend - 2;
|
821 |
|
|
operand = M32C_OPERAND_LAB_24_8;
|
822 |
|
|
break;
|
823 |
|
|
case -M32C_MACRO_ADJNZ_4:
|
824 |
|
|
rl_addend = 0x51;
|
825 |
|
|
op[4] = addend - 2;
|
826 |
|
|
operand = M32C_OPERAND_LAB_32_8;
|
827 |
|
|
break;
|
828 |
|
|
case -M32C_MACRO_ADJNZ_5:
|
829 |
|
|
rl_addend = 0x61;
|
830 |
|
|
op[5] = addend - 2;
|
831 |
|
|
operand = M32C_OPERAND_LAB_40_8;
|
832 |
|
|
break;
|
833 |
|
|
|
834 |
|
|
default:
|
835 |
|
|
printf("\nHey! Need more opcode converters! missing: %d %s\n\n",
|
836 |
|
|
fragP->fr_subtype,
|
837 |
|
|
fragP->fr_cgen.insn->base->name);
|
838 |
|
|
abort();
|
839 |
|
|
}
|
840 |
|
|
|
841 |
|
|
if (m32c_relax)
|
842 |
|
|
{
|
843 |
|
|
if (operand != M32C_OPERAND_LAB_8_24)
|
844 |
|
|
fragP->fr_offset = (fragP->fr_address + where);
|
845 |
|
|
|
846 |
|
|
fix_new (fragP,
|
847 |
|
|
rl_where,
|
848 |
|
|
0, abs_section_sym, rl_addend, 0,
|
849 |
|
|
BFD_RELOC_M32C_RL_JUMP);
|
850 |
|
|
}
|
851 |
|
|
|
852 |
|
|
if (S_GET_SEGMENT (fragP->fr_symbol) != sec
|
853 |
|
|
|| operand == M32C_OPERAND_LAB_8_24
|
854 |
|
|
|| (m32c_relax && (operand != M32C_OPERAND_LAB_5_3
|
855 |
|
|
&& operand != M32C_OPERAND_LAB32_JMP_S)))
|
856 |
|
|
{
|
857 |
|
|
gas_assert (fragP->fr_cgen.insn != 0);
|
858 |
|
|
gas_cgen_record_fixup (fragP,
|
859 |
|
|
where,
|
860 |
|
|
fragP->fr_cgen.insn,
|
861 |
|
|
(fragP->fr_fix - where) * 8,
|
862 |
|
|
cgen_operand_lookup_by_num (gas_cgen_cpu_desc,
|
863 |
|
|
operand),
|
864 |
|
|
fragP->fr_cgen.opinfo,
|
865 |
|
|
fragP->fr_symbol,
|
866 |
|
|
fragP->fr_offset);
|
867 |
|
|
}
|
868 |
|
|
}
|
869 |
|
|
|
870 |
|
|
/* Functions concerning relocs. */
|
871 |
|
|
|
872 |
|
|
/* The location from which a PC relative jump should be calculated,
|
873 |
|
|
given a PC relative reloc. */
|
874 |
|
|
|
875 |
|
|
long
|
876 |
|
|
md_pcrel_from_section (fixS * fixP, segT sec)
|
877 |
|
|
{
|
878 |
|
|
if (fixP->fx_addsy != (symbolS *) NULL
|
879 |
|
|
&& (! S_IS_DEFINED (fixP->fx_addsy)
|
880 |
|
|
|| S_GET_SEGMENT (fixP->fx_addsy) != sec))
|
881 |
|
|
/* The symbol is undefined (or is defined but not in this section).
|
882 |
|
|
Let the linker figure it out. */
|
883 |
|
|
return 0;
|
884 |
|
|
|
885 |
|
|
return (fixP->fx_frag->fr_address + fixP->fx_where);
|
886 |
|
|
}
|
887 |
|
|
|
888 |
|
|
/* Return the bfd reloc type for OPERAND of INSN at fixup FIXP.
|
889 |
|
|
Returns BFD_RELOC_NONE if no reloc type can be found.
|
890 |
|
|
*FIXP may be modified if desired. */
|
891 |
|
|
|
892 |
|
|
bfd_reloc_code_real_type
|
893 |
|
|
md_cgen_lookup_reloc (const CGEN_INSN * insn ATTRIBUTE_UNUSED,
|
894 |
|
|
const CGEN_OPERAND * operand,
|
895 |
|
|
fixS * fixP ATTRIBUTE_UNUSED)
|
896 |
|
|
{
|
897 |
|
|
static const struct op_reloc {
|
898 |
|
|
/* A CGEN operand type that can be a relocatable expression. */
|
899 |
|
|
CGEN_OPERAND_TYPE operand;
|
900 |
|
|
|
901 |
|
|
/* The appropriate BFD reloc type to use for that. */
|
902 |
|
|
bfd_reloc_code_real_type reloc;
|
903 |
|
|
|
904 |
|
|
/* The offset from the start of the instruction to the field to be
|
905 |
|
|
relocated, in bytes. */
|
906 |
|
|
int offset;
|
907 |
|
|
} op_reloc_table[] = {
|
908 |
|
|
|
909 |
|
|
/* PC-REL relocs for 8-bit fields. */
|
910 |
|
|
{ M32C_OPERAND_LAB_8_8, BFD_RELOC_8_PCREL, 1 },
|
911 |
|
|
{ M32C_OPERAND_LAB_16_8, BFD_RELOC_8_PCREL, 2 },
|
912 |
|
|
{ M32C_OPERAND_LAB_24_8, BFD_RELOC_8_PCREL, 3 },
|
913 |
|
|
{ M32C_OPERAND_LAB_32_8, BFD_RELOC_8_PCREL, 4 },
|
914 |
|
|
{ M32C_OPERAND_LAB_40_8, BFD_RELOC_8_PCREL, 5 },
|
915 |
|
|
|
916 |
|
|
/* PC-REL relocs for 16-bit fields. */
|
917 |
|
|
{ M32C_OPERAND_LAB_8_16, BFD_RELOC_16_PCREL, 1 },
|
918 |
|
|
|
919 |
|
|
/* Absolute relocs for 8-bit fields. */
|
920 |
|
|
{ M32C_OPERAND_IMM_8_QI, BFD_RELOC_8, 1 },
|
921 |
|
|
{ M32C_OPERAND_IMM_16_QI, BFD_RELOC_8, 2 },
|
922 |
|
|
{ M32C_OPERAND_IMM_24_QI, BFD_RELOC_8, 3 },
|
923 |
|
|
{ M32C_OPERAND_IMM_32_QI, BFD_RELOC_8, 4 },
|
924 |
|
|
{ M32C_OPERAND_IMM_40_QI, BFD_RELOC_8, 5 },
|
925 |
|
|
{ M32C_OPERAND_IMM_48_QI, BFD_RELOC_8, 6 },
|
926 |
|
|
{ M32C_OPERAND_IMM_56_QI, BFD_RELOC_8, 7 },
|
927 |
|
|
{ M32C_OPERAND_DSP_8_S8, BFD_RELOC_8, 1 },
|
928 |
|
|
{ M32C_OPERAND_DSP_16_S8, BFD_RELOC_8, 2 },
|
929 |
|
|
{ M32C_OPERAND_DSP_24_S8, BFD_RELOC_8, 3 },
|
930 |
|
|
{ M32C_OPERAND_DSP_32_S8, BFD_RELOC_8, 4 },
|
931 |
|
|
{ M32C_OPERAND_DSP_40_S8, BFD_RELOC_8, 5 },
|
932 |
|
|
{ M32C_OPERAND_DSP_48_S8, BFD_RELOC_8, 6 },
|
933 |
|
|
{ M32C_OPERAND_DSP_8_U8, BFD_RELOC_8, 1 },
|
934 |
|
|
{ M32C_OPERAND_DSP_16_U8, BFD_RELOC_8, 2 },
|
935 |
|
|
{ M32C_OPERAND_DSP_24_U8, BFD_RELOC_8, 3 },
|
936 |
|
|
{ M32C_OPERAND_DSP_32_U8, BFD_RELOC_8, 4 },
|
937 |
|
|
{ M32C_OPERAND_DSP_40_U8, BFD_RELOC_8, 5 },
|
938 |
|
|
{ M32C_OPERAND_DSP_48_U8, BFD_RELOC_8, 6 },
|
939 |
|
|
{ M32C_OPERAND_BITBASE32_16_S11_UNPREFIXED, BFD_RELOC_8, 2 },
|
940 |
|
|
{ M32C_OPERAND_BITBASE32_16_U11_UNPREFIXED, BFD_RELOC_8, 2 },
|
941 |
|
|
{ M32C_OPERAND_BITBASE32_24_S11_PREFIXED, BFD_RELOC_8, 3 },
|
942 |
|
|
{ M32C_OPERAND_BITBASE32_24_U11_PREFIXED, BFD_RELOC_8, 3 },
|
943 |
|
|
|
944 |
|
|
/* Absolute relocs for 16-bit fields. */
|
945 |
|
|
{ M32C_OPERAND_IMM_8_HI, BFD_RELOC_16, 1 },
|
946 |
|
|
{ M32C_OPERAND_IMM_16_HI, BFD_RELOC_16, 2 },
|
947 |
|
|
{ M32C_OPERAND_IMM_24_HI, BFD_RELOC_16, 3 },
|
948 |
|
|
{ M32C_OPERAND_IMM_32_HI, BFD_RELOC_16, 4 },
|
949 |
|
|
{ M32C_OPERAND_IMM_40_HI, BFD_RELOC_16, 5 },
|
950 |
|
|
{ M32C_OPERAND_IMM_48_HI, BFD_RELOC_16, 6 },
|
951 |
|
|
{ M32C_OPERAND_IMM_56_HI, BFD_RELOC_16, 7 },
|
952 |
|
|
{ M32C_OPERAND_IMM_64_HI, BFD_RELOC_16, 8 },
|
953 |
|
|
{ M32C_OPERAND_DSP_16_S16, BFD_RELOC_16, 2 },
|
954 |
|
|
{ M32C_OPERAND_DSP_24_S16, BFD_RELOC_16, 3 },
|
955 |
|
|
{ M32C_OPERAND_DSP_32_S16, BFD_RELOC_16, 4 },
|
956 |
|
|
{ M32C_OPERAND_DSP_40_S16, BFD_RELOC_16, 5 },
|
957 |
|
|
{ M32C_OPERAND_DSP_8_U16, BFD_RELOC_16, 1 },
|
958 |
|
|
{ M32C_OPERAND_DSP_16_U16, BFD_RELOC_16, 2 },
|
959 |
|
|
{ M32C_OPERAND_DSP_24_U16, BFD_RELOC_16, 3 },
|
960 |
|
|
{ M32C_OPERAND_DSP_32_U16, BFD_RELOC_16, 4 },
|
961 |
|
|
{ M32C_OPERAND_DSP_40_U16, BFD_RELOC_16, 5 },
|
962 |
|
|
{ M32C_OPERAND_DSP_48_U16, BFD_RELOC_16, 6 },
|
963 |
|
|
{ M32C_OPERAND_BITBASE32_16_S19_UNPREFIXED, BFD_RELOC_16, 2 },
|
964 |
|
|
{ M32C_OPERAND_BITBASE32_16_U19_UNPREFIXED, BFD_RELOC_16, 2 },
|
965 |
|
|
{ M32C_OPERAND_BITBASE32_24_S19_PREFIXED, BFD_RELOC_16, 3 },
|
966 |
|
|
{ M32C_OPERAND_BITBASE32_24_U19_PREFIXED, BFD_RELOC_16, 3 },
|
967 |
|
|
|
968 |
|
|
/* Absolute relocs for 24-bit fields. */
|
969 |
|
|
{ M32C_OPERAND_LAB_8_24, BFD_RELOC_24, 1 },
|
970 |
|
|
{ M32C_OPERAND_DSP_8_S24, BFD_RELOC_24, 1 },
|
971 |
|
|
{ M32C_OPERAND_DSP_8_U24, BFD_RELOC_24, 1 },
|
972 |
|
|
{ M32C_OPERAND_DSP_16_U24, BFD_RELOC_24, 2 },
|
973 |
|
|
{ M32C_OPERAND_DSP_24_U24, BFD_RELOC_24, 3 },
|
974 |
|
|
{ M32C_OPERAND_DSP_32_U24, BFD_RELOC_24, 4 },
|
975 |
|
|
{ M32C_OPERAND_DSP_40_U24, BFD_RELOC_24, 5 },
|
976 |
|
|
{ M32C_OPERAND_DSP_48_U24, BFD_RELOC_24, 6 },
|
977 |
|
|
{ M32C_OPERAND_DSP_16_U20, BFD_RELOC_24, 2 },
|
978 |
|
|
{ M32C_OPERAND_DSP_24_U20, BFD_RELOC_24, 3 },
|
979 |
|
|
{ M32C_OPERAND_DSP_32_U20, BFD_RELOC_24, 4 },
|
980 |
|
|
{ M32C_OPERAND_BITBASE32_16_U27_UNPREFIXED, BFD_RELOC_24, 2 },
|
981 |
|
|
{ M32C_OPERAND_BITBASE32_24_U27_PREFIXED, BFD_RELOC_24, 3 },
|
982 |
|
|
|
983 |
|
|
/* Absolute relocs for 32-bit fields. */
|
984 |
|
|
{ M32C_OPERAND_IMM_16_SI, BFD_RELOC_32, 2 },
|
985 |
|
|
{ M32C_OPERAND_IMM_24_SI, BFD_RELOC_32, 3 },
|
986 |
|
|
{ M32C_OPERAND_IMM_32_SI, BFD_RELOC_32, 4 },
|
987 |
|
|
{ M32C_OPERAND_IMM_40_SI, BFD_RELOC_32, 5 },
|
988 |
|
|
|
989 |
|
|
};
|
990 |
|
|
|
991 |
|
|
int i;
|
992 |
|
|
|
993 |
|
|
for (i = ARRAY_SIZE (op_reloc_table); --i >= 0; )
|
994 |
|
|
{
|
995 |
|
|
const struct op_reloc *or = &op_reloc_table[i];
|
996 |
|
|
|
997 |
|
|
if (or->operand == operand->type)
|
998 |
|
|
{
|
999 |
|
|
fixP->fx_where += or->offset;
|
1000 |
|
|
fixP->fx_size -= or->offset;
|
1001 |
|
|
|
1002 |
|
|
if (fixP->fx_cgen.opinfo
|
1003 |
|
|
&& fixP->fx_cgen.opinfo != BFD_RELOC_NONE)
|
1004 |
|
|
return fixP->fx_cgen.opinfo;
|
1005 |
|
|
|
1006 |
|
|
return or->reloc;
|
1007 |
|
|
}
|
1008 |
|
|
}
|
1009 |
|
|
|
1010 |
|
|
fprintf
|
1011 |
|
|
(stderr,
|
1012 |
|
|
"Error: tc-m32c.c:md_cgen_lookup_reloc Unimplemented relocation for operand %s\n",
|
1013 |
|
|
operand->name);
|
1014 |
|
|
|
1015 |
|
|
return BFD_RELOC_NONE;
|
1016 |
|
|
}
|
1017 |
|
|
|
1018 |
|
|
void
|
1019 |
|
|
m32c_cons_fix_new (fragS * frag,
|
1020 |
|
|
int where,
|
1021 |
|
|
int size,
|
1022 |
|
|
expressionS *exp)
|
1023 |
|
|
{
|
1024 |
|
|
bfd_reloc_code_real_type type;
|
1025 |
|
|
|
1026 |
|
|
switch (size)
|
1027 |
|
|
{
|
1028 |
|
|
case 1:
|
1029 |
|
|
type = BFD_RELOC_8;
|
1030 |
|
|
break;
|
1031 |
|
|
case 2:
|
1032 |
|
|
type = BFD_RELOC_16;
|
1033 |
|
|
break;
|
1034 |
|
|
case 3:
|
1035 |
|
|
type = BFD_RELOC_24;
|
1036 |
|
|
break;
|
1037 |
|
|
case 4:
|
1038 |
|
|
default:
|
1039 |
|
|
type = BFD_RELOC_32;
|
1040 |
|
|
break;
|
1041 |
|
|
case 8:
|
1042 |
|
|
type = BFD_RELOC_64;
|
1043 |
|
|
break;
|
1044 |
|
|
}
|
1045 |
|
|
|
1046 |
|
|
fix_new_exp (frag, where, (int) size, exp, 0, type);
|
1047 |
|
|
}
|
1048 |
|
|
|
1049 |
|
|
void
|
1050 |
|
|
m32c_apply_fix (struct fix *f, valueT *t, segT s)
|
1051 |
|
|
{
|
1052 |
|
|
if (f->fx_r_type == BFD_RELOC_M32C_RL_JUMP
|
1053 |
|
|
|| f->fx_r_type == BFD_RELOC_M32C_RL_1ADDR
|
1054 |
|
|
|| f->fx_r_type == BFD_RELOC_M32C_RL_2ADDR)
|
1055 |
|
|
return;
|
1056 |
|
|
gas_cgen_md_apply_fix (f, t, s);
|
1057 |
|
|
}
|
1058 |
|
|
|
1059 |
|
|
arelent *
|
1060 |
|
|
tc_gen_reloc (asection *sec, fixS *fx)
|
1061 |
|
|
{
|
1062 |
|
|
if (fx->fx_r_type == BFD_RELOC_M32C_RL_JUMP
|
1063 |
|
|
|| fx->fx_r_type == BFD_RELOC_M32C_RL_1ADDR
|
1064 |
|
|
|| fx->fx_r_type == BFD_RELOC_M32C_RL_2ADDR)
|
1065 |
|
|
{
|
1066 |
|
|
arelent * reloc;
|
1067 |
|
|
|
1068 |
|
|
reloc = xmalloc (sizeof (* reloc));
|
1069 |
|
|
|
1070 |
|
|
reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
|
1071 |
|
|
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fx->fx_addsy);
|
1072 |
|
|
reloc->address = fx->fx_frag->fr_address + fx->fx_where;
|
1073 |
|
|
reloc->howto = bfd_reloc_type_lookup (stdoutput, fx->fx_r_type);
|
1074 |
|
|
reloc->addend = fx->fx_offset;
|
1075 |
|
|
return reloc;
|
1076 |
|
|
|
1077 |
|
|
}
|
1078 |
|
|
return gas_cgen_tc_gen_reloc (sec, fx);
|
1079 |
|
|
}
|
1080 |
|
|
|
1081 |
|
|
/* See whether we need to force a relocation into the output file.
|
1082 |
|
|
This is used to force out switch and PC relative relocations when
|
1083 |
|
|
relaxing. */
|
1084 |
|
|
|
1085 |
|
|
int
|
1086 |
|
|
m32c_force_relocation (fixS * fixp)
|
1087 |
|
|
{
|
1088 |
|
|
int reloc = fixp->fx_r_type;
|
1089 |
|
|
|
1090 |
|
|
if (reloc > (int)BFD_RELOC_UNUSED)
|
1091 |
|
|
{
|
1092 |
|
|
reloc -= (int)BFD_RELOC_UNUSED;
|
1093 |
|
|
switch (reloc)
|
1094 |
|
|
{
|
1095 |
|
|
case M32C_OPERAND_DSP_32_S16:
|
1096 |
|
|
case M32C_OPERAND_DSP_32_U16:
|
1097 |
|
|
case M32C_OPERAND_IMM_32_HI:
|
1098 |
|
|
case M32C_OPERAND_DSP_16_S16:
|
1099 |
|
|
case M32C_OPERAND_DSP_16_U16:
|
1100 |
|
|
case M32C_OPERAND_IMM_16_HI:
|
1101 |
|
|
case M32C_OPERAND_DSP_24_S16:
|
1102 |
|
|
case M32C_OPERAND_DSP_24_U16:
|
1103 |
|
|
case M32C_OPERAND_IMM_24_HI:
|
1104 |
|
|
return 1;
|
1105 |
|
|
|
1106 |
|
|
/* If we're doing linker relaxing, we need to keep all the
|
1107 |
|
|
pc-relative jumps in case we need to fix them due to
|
1108 |
|
|
deleted bytes between the jump and its destination. */
|
1109 |
|
|
case M32C_OPERAND_LAB_8_8:
|
1110 |
|
|
case M32C_OPERAND_LAB_8_16:
|
1111 |
|
|
case M32C_OPERAND_LAB_8_24:
|
1112 |
|
|
case M32C_OPERAND_LAB_16_8:
|
1113 |
|
|
case M32C_OPERAND_LAB_24_8:
|
1114 |
|
|
case M32C_OPERAND_LAB_32_8:
|
1115 |
|
|
case M32C_OPERAND_LAB_40_8:
|
1116 |
|
|
if (m32c_relax)
|
1117 |
|
|
return 1;
|
1118 |
|
|
default:
|
1119 |
|
|
break;
|
1120 |
|
|
}
|
1121 |
|
|
}
|
1122 |
|
|
else
|
1123 |
|
|
{
|
1124 |
|
|
switch (fixp->fx_r_type)
|
1125 |
|
|
{
|
1126 |
|
|
case BFD_RELOC_16:
|
1127 |
|
|
return 1;
|
1128 |
|
|
|
1129 |
|
|
case BFD_RELOC_M32C_RL_JUMP:
|
1130 |
|
|
case BFD_RELOC_M32C_RL_1ADDR:
|
1131 |
|
|
case BFD_RELOC_M32C_RL_2ADDR:
|
1132 |
|
|
case BFD_RELOC_8_PCREL:
|
1133 |
|
|
case BFD_RELOC_16_PCREL:
|
1134 |
|
|
if (m32c_relax)
|
1135 |
|
|
return 1;
|
1136 |
|
|
default:
|
1137 |
|
|
break;
|
1138 |
|
|
}
|
1139 |
|
|
}
|
1140 |
|
|
|
1141 |
|
|
return generic_force_reloc (fixp);
|
1142 |
|
|
}
|
1143 |
|
|
|
1144 |
|
|
/* Write a value out to the object file, using the appropriate endianness. */
|
1145 |
|
|
|
1146 |
|
|
void
|
1147 |
|
|
md_number_to_chars (char * buf, valueT val, int n)
|
1148 |
|
|
{
|
1149 |
|
|
number_to_chars_littleendian (buf, val, n);
|
1150 |
|
|
}
|
1151 |
|
|
|
1152 |
|
|
/* Turn a string in input_line_pointer into a floating point constant of type
|
1153 |
|
|
type, and store the appropriate bytes in *litP. The number of LITTLENUMS
|
1154 |
|
|
emitted is stored in *sizeP . An error message is returned, or NULL on OK. */
|
1155 |
|
|
|
1156 |
|
|
/* Equal to MAX_PRECISION in atof-ieee.c. */
|
1157 |
|
|
#define MAX_LITTLENUMS 6
|
1158 |
|
|
|
1159 |
|
|
char *
|
1160 |
|
|
md_atof (int type, char * litP, int * sizeP)
|
1161 |
|
|
{
|
1162 |
|
|
return ieee_md_atof (type, litP, sizeP, TRUE);
|
1163 |
|
|
}
|
1164 |
|
|
|
1165 |
|
|
bfd_boolean
|
1166 |
|
|
m32c_fix_adjustable (fixS * fixP)
|
1167 |
|
|
{
|
1168 |
|
|
int reloc;
|
1169 |
|
|
if (fixP->fx_addsy == NULL)
|
1170 |
|
|
return 1;
|
1171 |
|
|
|
1172 |
|
|
/* We need the symbol name for the VTABLE entries. */
|
1173 |
|
|
reloc = fixP->fx_r_type;
|
1174 |
|
|
if (reloc > (int)BFD_RELOC_UNUSED)
|
1175 |
|
|
{
|
1176 |
|
|
reloc -= (int)BFD_RELOC_UNUSED;
|
1177 |
|
|
switch (reloc)
|
1178 |
|
|
{
|
1179 |
|
|
case M32C_OPERAND_DSP_32_S16:
|
1180 |
|
|
case M32C_OPERAND_DSP_32_U16:
|
1181 |
|
|
case M32C_OPERAND_IMM_32_HI:
|
1182 |
|
|
case M32C_OPERAND_DSP_16_S16:
|
1183 |
|
|
case M32C_OPERAND_DSP_16_U16:
|
1184 |
|
|
case M32C_OPERAND_IMM_16_HI:
|
1185 |
|
|
case M32C_OPERAND_DSP_24_S16:
|
1186 |
|
|
case M32C_OPERAND_DSP_24_U16:
|
1187 |
|
|
case M32C_OPERAND_IMM_24_HI:
|
1188 |
|
|
return 0;
|
1189 |
|
|
}
|
1190 |
|
|
}
|
1191 |
|
|
else
|
1192 |
|
|
{
|
1193 |
|
|
if (fixP->fx_r_type == BFD_RELOC_16)
|
1194 |
|
|
return 0;
|
1195 |
|
|
}
|
1196 |
|
|
|
1197 |
|
|
/* Do not adjust relocations involving symbols in merged sections.
|
1198 |
|
|
|
1199 |
|
|
A reloc patching in the value of some symbol S plus some addend A
|
1200 |
|
|
can be produced in different ways:
|
1201 |
|
|
|
1202 |
|
|
1) It might simply be a reference to the data at S + A. Clearly,
|
1203 |
|
|
if linker merging shift that data around, the value patched in
|
1204 |
|
|
by the reloc needs to be adjusted accordingly.
|
1205 |
|
|
|
1206 |
|
|
2) Or, it might be a reference to S, with A added in as a constant
|
1207 |
|
|
bias. For example, given code like this:
|
1208 |
|
|
|
1209 |
|
|
static int S[100];
|
1210 |
|
|
|
1211 |
|
|
... S[i - 8] ...
|
1212 |
|
|
|
1213 |
|
|
it would be reasonable for the compiler to rearrange the array
|
1214 |
|
|
reference to something like:
|
1215 |
|
|
|
1216 |
|
|
... (S-8)[i] ...
|
1217 |
|
|
|
1218 |
|
|
and emit assembly code that refers to S - (8 * sizeof (int)),
|
1219 |
|
|
so the subtraction is done entirely at compile-time. In this
|
1220 |
|
|
case, the reloc's addend A would be -(8 * sizeof (int)), and
|
1221 |
|
|
shifting around code or data at S + A should not affect the
|
1222 |
|
|
reloc: the reloc isn't referring to that code or data at all.
|
1223 |
|
|
|
1224 |
|
|
The linker has no way of knowing which case it has in hand. So,
|
1225 |
|
|
to disambiguate, we have the linker always treat reloc addends as
|
1226 |
|
|
in case 2): they're constants that should be simply added to the
|
1227 |
|
|
symbol value, just like the reloc says. And we express case 1)
|
1228 |
|
|
in different way: we have the compiler place a label at the real
|
1229 |
|
|
target, and reference that label with an addend of zero. (The
|
1230 |
|
|
compiler is unlikely to reference code using a label plus an
|
1231 |
|
|
offset anyway, since it doesn't know the sizes of the
|
1232 |
|
|
instructions.)
|
1233 |
|
|
|
1234 |
|
|
The simplification being done by gas/write.c:adjust_reloc_syms,
|
1235 |
|
|
however, turns the explicit-label usage into the label-plus-
|
1236 |
|
|
offset usage, re-introducing the ambiguity the compiler avoided.
|
1237 |
|
|
So we need to disable that simplification for symbols referring
|
1238 |
|
|
to merged data.
|
1239 |
|
|
|
1240 |
|
|
This only affects object size a little bit. */
|
1241 |
|
|
if (S_GET_SEGMENT (fixP->fx_addsy)->flags & SEC_MERGE)
|
1242 |
|
|
return 0;
|
1243 |
|
|
|
1244 |
|
|
if (m32c_relax)
|
1245 |
|
|
return 0;
|
1246 |
|
|
|
1247 |
|
|
return 1;
|
1248 |
|
|
}
|
1249 |
|
|
|
1250 |
|
|
/* Worker function for m32c_is_colon_insn(). */
|
1251 |
|
|
static char
|
1252 |
|
|
restore_colon (int advance_i_l_p_by)
|
1253 |
|
|
{
|
1254 |
|
|
char c;
|
1255 |
|
|
|
1256 |
|
|
/* Restore the colon, and advance input_line_pointer to
|
1257 |
|
|
the end of the new symbol. */
|
1258 |
|
|
* input_line_pointer = ':';
|
1259 |
|
|
input_line_pointer += advance_i_l_p_by;
|
1260 |
|
|
c = * input_line_pointer;
|
1261 |
|
|
* input_line_pointer = 0;
|
1262 |
|
|
|
1263 |
|
|
return c;
|
1264 |
|
|
}
|
1265 |
|
|
|
1266 |
|
|
/* Determines if the symbol starting at START and ending in
|
1267 |
|
|
a colon that was at the location pointed to by INPUT_LINE_POINTER
|
1268 |
|
|
(but which has now been replaced bu a NUL) is in fact an
|
1269 |
|
|
:Z, :S, :Q, or :G suffix.
|
1270 |
|
|
If it is, then it restores the colon, advances INPUT_LINE_POINTER
|
1271 |
|
|
to the real end of the instruction/symbol, and returns the character
|
1272 |
|
|
that really terminated the symbol. Otherwise it returns 0. */
|
1273 |
|
|
char
|
1274 |
|
|
m32c_is_colon_insn (char *start ATTRIBUTE_UNUSED)
|
1275 |
|
|
{
|
1276 |
|
|
char * i_l_p = input_line_pointer;
|
1277 |
|
|
|
1278 |
|
|
/* Check to see if the text following the colon is 'G' */
|
1279 |
|
|
if (TOLOWER (i_l_p[1]) == 'g' && (i_l_p[2] == ' ' || i_l_p[2] == '\t'))
|
1280 |
|
|
return restore_colon (2);
|
1281 |
|
|
|
1282 |
|
|
/* Check to see if the text following the colon is 'Q' */
|
1283 |
|
|
if (TOLOWER (i_l_p[1]) == 'q' && (i_l_p[2] == ' ' || i_l_p[2] == '\t'))
|
1284 |
|
|
return restore_colon (2);
|
1285 |
|
|
|
1286 |
|
|
/* Check to see if the text following the colon is 'S' */
|
1287 |
|
|
if (TOLOWER (i_l_p[1]) == 's' && (i_l_p[2] == ' ' || i_l_p[2] == '\t'))
|
1288 |
|
|
return restore_colon (2);
|
1289 |
|
|
|
1290 |
|
|
/* Check to see if the text following the colon is 'Z' */
|
1291 |
|
|
if (TOLOWER (i_l_p[1]) == 'z' && (i_l_p[2] == ' ' || i_l_p[2] == '\t'))
|
1292 |
|
|
return restore_colon (2);
|
1293 |
|
|
|
1294 |
|
|
return 0;
|
1295 |
|
|
}
|