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binutils-gdb/gas/config/tc-m68k.c
Pat Bernardi 85f7484a3a m68k: tag floating-point ABI used 
This patch adds GNU attribute support to m68k and utilises it to tag the
floating-point calling convention used (hard-float or soft-float). It enables
the linker to ensure linked objects use a consistent floating-point ABI and
allows tools like GDB to infer the ABI used from the ELF file. It is based on
similar work done for PowerPC.

bfd/
	* elf32-m68k.c (m68k_elf_merge_obj_attributes): New function.
	(elf32_m68k_merge_private_bfd_data): Merge GNU attributes.
binutils/
	* readelf.c (display_m68k_gnu_attribute): New function.
	(process_arch_specific): Call display_m68k_gnu_attribute for EM_68K.
gas/
	* config/tc-m68k.c (m68k_elf_gnu_attribute): New function.
	(md_pseudo_table): Handle "gnu_attribute".
	* doc/as.texi: Document GNU attribute for M68K.
include/
	* elf/m68k.h: Add enum for GNU object attribute with floating point
	tag name and values.
ld/
	* testsuite/ld-m68k/attr-gnu-4-0.s: New file.
	* testsuite/ld-m68k/attr-gnu-4-1.s: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-2.s: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-00.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-01.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-02.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-10.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-11.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-12.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-20.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-21.d: Likewise.
	* testsuite/ld-m68k/attr-gnu-4-22.d: Likewise.
	* testsuite/ld-m68k/m68k.exp: Run the new tests.
2020-06-26 14:42:19 +09:30

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/* tc-m68k.c -- Assemble for the m68k family
Copyright (C) 1987-2020 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
#include "as.h"
#include "safe-ctype.h"
#include "obstack.h"
#include "subsegs.h"
#include "dwarf2dbg.h"
#include "dw2gencfi.h"
#include "opcode/m68k.h"
#include "m68k-parse.h"
#include "elf/m68k.h"
static void m68k_elf_cons (int);
static void m68k_elf_gnu_attribute (int);
/* This string holds the chars that always start a comment. If the
pre-processor is disabled, these aren't very useful. The macro
tc_comment_chars points to this. We use this, rather than the
usual comment_chars, so that the --bitwise-or option will work. */
#if defined (TE_SVR4) || defined (TE_DELTA)
const char *m68k_comment_chars = "|#";
#else
const char *m68k_comment_chars = "|";
#endif
/* This array holds the chars that only start a comment at the beginning of
a line. If the line seems to have the form '# 123 filename'
.line and .file directives will appear in the pre-processed output */
/* Note that input_file.c hand checks for '#' at the beginning of the
first line of the input file. This is because the compiler outputs
#NO_APP at the beginning of its output. */
/* Also note that comments like this one will always work. */
const char line_comment_chars[] = "#*";
const char line_separator_chars[] = ";";
/* Chars that can be used to separate mant from exp in floating point nums. */
const char EXP_CHARS[] = "eE";
/* Chars that mean this number is a floating point constant, as
in "0f12.456" or "0d1.2345e12". */
const char FLT_CHARS[] = "rRsSfFdDxXeEpP";
/* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
changed in read.c . Ideally it shouldn't have to know about it at all,
but nothing is ideal around here. */
/* Are we trying to generate PIC code? If so, absolute references
ought to be made into linkage table references or pc-relative
references. Not implemented. For ELF there are other means
to denote pic relocations. */
int flag_want_pic;
static int flag_short_refs; /* -l option. */
static int flag_long_jumps; /* -S option. */
static int flag_keep_pcrel; /* --pcrel option. */
#ifdef REGISTER_PREFIX_OPTIONAL
int flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
#else
int flag_reg_prefix_optional;
#endif
/* Whether --register-prefix-optional was used on the command line. */
static int reg_prefix_optional_seen;
/* The floating point coprocessor to use by default. */
static enum m68k_register m68k_float_copnum = COP1;
/* If this is non-zero, then references to number(%pc) will be taken
to refer to number, rather than to %pc + number. */
static int m68k_abspcadd;
/* If this is non-zero, then the quick forms of the move, add, and sub
instructions are used when possible. */
static int m68k_quick = 1;
/* If this is non-zero, then if the size is not specified for a base
or outer displacement, the assembler assumes that the size should
be 32 bits. */
static int m68k_rel32 = 1;
/* This is non-zero if m68k_rel32 was set from the command line. */
static int m68k_rel32_from_cmdline;
/* The default width to use for an index register when using a base
displacement. */
static enum m68k_size m68k_index_width_default = SIZE_LONG;
/* We want to warn if any text labels are misaligned. In order to get
the right line number, we need to record the line number for each
label. */
struct label_line
{
struct label_line *next;
symbolS *label;
const char *file;
unsigned int line;
int text;
};
/* The list of labels. */
static struct label_line *labels;
/* The current label. */
static struct label_line *current_label;
/* Pointer to list holding the opcodes sorted by name. */
static struct m68k_opcode const ** m68k_sorted_opcodes;
/* It's an arbitrary name: This means I don't approve of it.
See flames below. */
static struct obstack robyn;
struct m68k_incant
{
const char *m_operands;
unsigned long m_opcode;
short m_opnum;
short m_codenum;
int m_arch;
struct m68k_incant *m_next;
};
#define getone(x) ((((x)->m_opcode)>>16)&0xffff)
#define gettwo(x) (((x)->m_opcode)&0xffff)
static const enum m68k_register m68000_ctrl[] = { 0 };
static const enum m68k_register m68010_ctrl[] = {
SFC, DFC, USP, VBR,
0
};
static const enum m68k_register m68020_ctrl[] = {
SFC, DFC, USP, VBR, CACR, CAAR, MSP, ISP,
0
};
static const enum m68k_register m68040_ctrl[] = {
SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1,
USP, VBR, MSP, ISP, MMUSR, URP, SRP,
0
};
static const enum m68k_register m68060_ctrl[] = {
SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1, BUSCR,
USP, VBR, URP, SRP, PCR,
0
};
static const enum m68k_register mcf_ctrl[] = {
CACR, TC, ACR0, ACR1, ACR2, ACR3, VBR, ROMBAR,
RAMBAR0, RAMBAR1, RAMBAR, MBAR,
0
};
static const enum m68k_register mcf51_ctrl[] = {
VBR, CPUCR,
0
};
static const enum m68k_register mcf5206_ctrl[] = {
CACR, ACR0, ACR1, VBR, RAMBAR0, RAMBAR_ALT, MBAR,
0
};
static const enum m68k_register mcf5208_ctrl[] = {
CACR, ACR0, ACR1, VBR, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5210a_ctrl[] = {
VBR, CACR, ACR0, ACR1, ROMBAR, RAMBAR, RAMBAR1, MBAR,
0
};
static const enum m68k_register mcf5213_ctrl[] = {
VBR, RAMBAR, RAMBAR1, FLASHBAR,
0
};
static const enum m68k_register mcf5216_ctrl[] = {
VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5221x_ctrl[] = {
VBR, FLASHBAR, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf52223_ctrl[] = {
VBR, FLASHBAR, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf52235_ctrl[] = {
VBR, FLASHBAR, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5225_ctrl[] = {
VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, MBAR, RAMBAR1,
0
};
static const enum m68k_register mcf52259_ctrl[] = {
VBR, FLASHBAR, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf52277_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5235_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5249_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR1, RAMBAR, MBAR, MBAR2,
0
};
static const enum m68k_register mcf5250_ctrl[] = {
VBR,
0
};
static const enum m68k_register mcf5253_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR1, RAMBAR, MBAR, MBAR2,
0
};
static const enum m68k_register mcf5271_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5272_ctrl[] = {
VBR, CACR, ACR0, ACR1, ROMBAR, RAMBAR_ALT, RAMBAR0, MBAR,
0
};
static const enum m68k_register mcf5275_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5282_ctrl[] = {
VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf53017_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5307_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR_ALT, MBAR,
0
};
static const enum m68k_register mcf5329_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcf5373_ctrl[] = {
VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
0
};
static const enum m68k_register mcfv4e_ctrl[] = {
CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
VBR, PC, ROMBAR0, ROMBAR1, RAMBAR0, RAMBAR1,
MBAR, SECMBAR,
MPCR /* Multiprocessor Control register */,
EDRAMBAR /* Embedded DRAM Base Address Register */,
/* Permutation control registers. */
PCR1U0, PCR1L0, PCR1U1, PCR1L1, PCR2U0, PCR2L0, PCR2U1, PCR2L1,
PCR3U0, PCR3L0, PCR3U1, PCR3L1,
/* Legacy names */
TC /* ASID */, BUSCR /* MMUBAR */,
ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
MBAR1 /* MBAR */, MBAR2 /* SECMBAR */, MBAR0 /* SECMBAR */,
ROMBAR /* ROMBAR0 */, RAMBAR /* RAMBAR1 */,
0
};
static const enum m68k_register mcf5407_ctrl[] = {
CACR, ASID, ACR0, ACR1, ACR2, ACR3,
VBR, PC, RAMBAR0, RAMBAR1, MBAR,
/* Legacy names */
TC /* ASID */,
ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
0
};
static const enum m68k_register mcf54418_ctrl[] = {
CACR, ASID, ACR0, ACR1, ACR2, ACR3, ACR4, ACR5, ACR6, ACR7, MMUBAR, RGPIOBAR,
VBR, PC, RAMBAR1,
/* Legacy names */
TC /* ASID */, BUSCR /* MMUBAR */,
ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
RAMBAR /* RAMBAR1 */,
0
};
static const enum m68k_register mcf54455_ctrl[] = {
CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
VBR, PC, RAMBAR1,
/* Legacy names */
TC /* ASID */, BUSCR /* MMUBAR */,
ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
RAMBAR /* RAMBAR1 */,
0
};
static const enum m68k_register mcf5475_ctrl[] = {
CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
VBR, PC, RAMBAR0, RAMBAR1, MBAR,
/* Legacy names */
TC /* ASID */, BUSCR /* MMUBAR */,
ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
0
};
static const enum m68k_register mcf5485_ctrl[] = {
CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
VBR, PC, RAMBAR0, RAMBAR1, MBAR,
/* Legacy names */
TC /* ASID */, BUSCR /* MMUBAR */,
ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
0
};
static const enum m68k_register fido_ctrl[] = {
SFC, DFC, USP, VBR, CAC, MBO,
0
};
#define cpu32_ctrl m68010_ctrl
static const enum m68k_register *control_regs;
/* Internal form of a 68020 instruction. */
struct m68k_it
{
const char *error;
const char *args; /* List of opcode info. */
int numargs;
int numo; /* Number of shorts in opcode. */
short opcode[11];
struct m68k_op operands[6];
int nexp; /* Number of exprs in use. */
struct m68k_exp exprs[4];
int nfrag; /* Number of frags we have to produce. */
struct
{
int fragoff; /* Where in the current opcode the frag ends. */
symbolS *fadd;
offsetT foff;
int fragty;
}
fragb[4];
int nrel; /* Num of reloc structs in use. */
struct
{
int n;
expressionS exp;
char wid;
char pcrel;
/* In a pc relative address the difference between the address
of the offset and the address that the offset is relative
to. This depends on the addressing mode. Basically this
is the value to put in the offset field to address the
first byte of the offset, without regarding the special
significance of some values (in the branch instruction, for
example). */
int pcrel_fix;
/* Whether this expression needs special pic relocation, and if
so, which. */
enum pic_relocation pic_reloc;
}
reloc[5]; /* Five is enough??? */
};
#define cpu_of_arch(x) ((x) & (m68000up | mcfisa_a | fido_a))
#define float_of_arch(x) ((x) & mfloat)
#define mmu_of_arch(x) ((x) & mmmu)
#define arch_coldfire_p(x) ((x) & mcfisa_a)
#define arch_coldfire_fpu(x) ((x) & cfloat)
/* Macros for determining if cpu supports a specific addressing mode. */
#define HAVE_LONG_DISP(x) \
((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
#define HAVE_LONG_CALL(x) \
((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
#define HAVE_LONG_COND(x) \
((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
#define HAVE_LONG_BRANCH(x) \
((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b))
#define LONG_BRANCH_VIA_COND(x) (HAVE_LONG_COND(x) && !HAVE_LONG_BRANCH(x))
static struct m68k_it the_ins; /* The instruction being assembled. */
#define op(ex) ((ex)->exp.X_op)
#define adds(ex) ((ex)->exp.X_add_symbol)
#define subs(ex) ((ex)->exp.X_op_symbol)
#define offs(ex) ((ex)->exp.X_add_number)
/* Macros for adding things to the m68k_it struct. */
#define addword(w) (the_ins.opcode[the_ins.numo++] = (w))
/* Like addword, but goes BEFORE general operands. */
static void
insop (int w, const struct m68k_incant *opcode)
{
int z;
for (z = the_ins.numo; z > opcode->m_codenum; --z)
the_ins.opcode[z] = the_ins.opcode[z - 1];
for (z = 0; z < the_ins.nrel; z++)
the_ins.reloc[z].n += 2;
for (z = 0; z < the_ins.nfrag; z++)
the_ins.fragb[z].fragoff++;
the_ins.opcode[opcode->m_codenum] = w;
the_ins.numo++;
}
/* The numo+1 kludge is so we can hit the low order byte of the prev word.
Blecch. */
static void
add_fix (int width, struct m68k_exp *exp, int pc_rel, int pc_fix)
{
the_ins.reloc[the_ins.nrel].n = (width == 'B' || width == '3'
? the_ins.numo * 2 - 1
: (width == 'b'
? the_ins.numo * 2 + 1
: the_ins.numo * 2));
the_ins.reloc[the_ins.nrel].exp = exp->exp;
the_ins.reloc[the_ins.nrel].wid = width;
the_ins.reloc[the_ins.nrel].pcrel_fix = pc_fix;
the_ins.reloc[the_ins.nrel].pic_reloc = exp->pic_reloc;
the_ins.reloc[the_ins.nrel++].pcrel = pc_rel;
}
/* Cause an extra frag to be generated here, inserting up to 10 bytes
(that value is chosen in the frag_var call in md_assemble). TYPE
is the subtype of the frag to be generated; its primary type is
rs_machine_dependent.
The TYPE parameter is also used by md_convert_frag_1 and
md_estimate_size_before_relax. The appropriate type of fixup will
be emitted by md_convert_frag_1.
ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
static void
add_frag (symbolS *add, offsetT off, int type)
{
the_ins.fragb[the_ins.nfrag].fragoff = the_ins.numo;
the_ins.fragb[the_ins.nfrag].fadd = add;
the_ins.fragb[the_ins.nfrag].foff = off;
the_ins.fragb[the_ins.nfrag++].fragty = type;
}
#define isvar(ex) \
(op (ex) != O_constant && op (ex) != O_big)
static char *crack_operand (char *str, struct m68k_op *opP);
static int get_num (struct m68k_exp *exp, int ok);
static int reverse_16_bits (int in);
static int reverse_8_bits (int in);
static void install_gen_operand (int mode, int val);
static void install_operand (int mode, int val);
static void s_bss (int);
static void s_data1 (int);
static void s_data2 (int);
static void s_even (int);
static void s_proc (int);
static void s_chip (int);
static void s_fopt (int);
static void s_opt (int);
static void s_reg (int);
static void s_restore (int);
static void s_save (int);
static void s_mri_if (int);
static void s_mri_else (int);
static void s_mri_endi (int);
static void s_mri_break (int);
static void s_mri_next (int);
static void s_mri_for (int);
static void s_mri_endf (int);
static void s_mri_repeat (int);
static void s_mri_until (int);
static void s_mri_while (int);
static void s_mri_endw (int);
static void s_m68k_cpu (int);
static void s_m68k_arch (int);
struct m68k_cpu
{
unsigned long arch; /* Architecture features. */
const enum m68k_register *control_regs; /* Control regs on chip */
const char *name; /* Name */
int alias; /* Alias for a canonical name. If 1, then
succeeds canonical name, if -1 then
succeeds canonical name, if <-1 ||>1 this is a
deprecated name, and the next/previous name
should be used. */
};
/* We hold flags for features explicitly enabled and explicitly
disabled. */
static int current_architecture;
static int not_current_architecture;
static const struct m68k_cpu *selected_arch;
static const struct m68k_cpu *selected_cpu;
static int initialized;
/* Architecture models. */
static const struct m68k_cpu m68k_archs[] =
{
{m68000, m68000_ctrl, "68000", 0},
{m68010, m68010_ctrl, "68010", 0},
{m68020|m68881|m68851, m68020_ctrl, "68020", 0},
{m68030|m68881|m68851, m68020_ctrl, "68030", 0},
{m68040, m68040_ctrl, "68040", 0},
{m68060, m68060_ctrl, "68060", 0},
{cpu32|m68881, cpu32_ctrl, "cpu32", 0},
{fido_a, fido_ctrl, "fidoa", 0},
{mcfisa_a|mcfhwdiv, NULL, "isaa", 0},
{mcfisa_a|mcfhwdiv|mcfisa_aa|mcfusp, NULL, "isaaplus", 0},
{mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp, NULL, "isab", 0},
{mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp, NULL, "isac", 0},
{mcfisa_a|mcfhwdiv|mcfisa_b|mcfmac|mcfusp, mcf_ctrl, "cfv4", 0},
{mcfisa_a|mcfhwdiv|mcfisa_b|mcfemac|mcfusp|cfloat, mcfv4e_ctrl, "cfv4e", 0},
{0,0,NULL, 0}
};
/* For -mno-mac we want to turn off all types of mac. */
static const unsigned no_mac = mcfmac | mcfemac;
/* Architecture extensions, here 'alias' -1 for m68k, +1 for cf and 0
for either. */
static const struct m68k_cpu m68k_extensions[] =
{
{m68851, NULL, "68851", -1},
{m68881, NULL, "68881", -1},
{m68881, NULL, "68882", -1},
{cfloat|m68881, NULL, "float", 0},
{mcfhwdiv, NULL, "div", 1},
{mcfusp, NULL, "usp", 1},
{mcfmac, (void *)&no_mac, "mac", 1},
{mcfemac, NULL, "emac", 1},
{0,NULL,NULL, 0}
};
/* Processor list */
static const struct m68k_cpu m68k_cpus[] =
{
{m68000, m68000_ctrl, "68000", 0},
{m68000, m68000_ctrl, "68ec000", 1},
{m68000, m68000_ctrl, "68hc000", 1},
{m68000, m68000_ctrl, "68hc001", 1},
{m68000, m68000_ctrl, "68008", 1},
{m68000, m68000_ctrl, "68302", 1},
{m68000, m68000_ctrl, "68306", 1},
{m68000, m68000_ctrl, "68307", 1},
{m68000, m68000_ctrl, "68322", 1},
{m68000, m68000_ctrl, "68356", 1},
{m68010, m68010_ctrl, "68010", 0},
{m68020|m68881|m68851, m68020_ctrl, "68020", 0},
{m68020|m68881|m68851, m68020_ctrl, "68k", 1},
{m68020|m68881|m68851, m68020_ctrl, "68ec020", 1},
{m68030|m68881|m68851, m68020_ctrl, "68030", 0},
{m68030|m68881|m68851, m68020_ctrl, "68ec030", 1},
{m68040, m68040_ctrl, "68040", 0},
{m68040, m68040_ctrl, "68ec040", 1},
{m68060, m68060_ctrl, "68060", 0},
{m68060, m68060_ctrl, "68ec060", 1},
{cpu32|m68881, cpu32_ctrl, "cpu32", 0},
{cpu32|m68881, cpu32_ctrl, "68330", 1},
{cpu32|m68881, cpu32_ctrl, "68331", 1},
{cpu32|m68881, cpu32_ctrl, "68332", 1},
{cpu32|m68881, cpu32_ctrl, "68333", 1},
{cpu32|m68881, cpu32_ctrl, "68334", 1},
{cpu32|m68881, cpu32_ctrl, "68336", 1},
{cpu32|m68881, cpu32_ctrl, "68340", 1},
{cpu32|m68881, cpu32_ctrl, "68341", 1},
{cpu32|m68881, cpu32_ctrl, "68349", 1},
{cpu32|m68881, cpu32_ctrl, "68360", 1},
{mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51", 0},
{mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51ac", 1},
{mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51ag", 1},
{mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51cn", 1},
{mcfisa_a|mcfisa_c|mcfusp|mcfmac, mcf51_ctrl, "51em", 1},
{mcfisa_a|mcfisa_c|mcfusp|mcfmac, mcf51_ctrl, "51je", 1},
{mcfisa_a|mcfisa_c|mcfusp|mcfemac, mcf51_ctrl, "51jf", 1},
{mcfisa_a|mcfisa_c|mcfusp|mcfemac, mcf51_ctrl, "51jg", 1},
{mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51jm", 1},
{mcfisa_a|mcfisa_c|mcfusp|mcfmac, mcf51_ctrl, "51mm", 1},
{mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51qe", 1},
{mcfisa_a|mcfisa_c|mcfusp|mcfemac, mcf51_ctrl, "51qm", 1},
{mcfisa_a, mcf_ctrl, "5200", 0},
{mcfisa_a, mcf_ctrl, "5202", 1},
{mcfisa_a, mcf_ctrl, "5204", 1},
{mcfisa_a, mcf5206_ctrl, "5206", 1},
{mcfisa_a|mcfhwdiv|mcfmac, mcf5206_ctrl, "5206e", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5208_ctrl, "5207", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5208_ctrl, "5208", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5210a_ctrl, "5210a", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5210a_ctrl, "5211a", 1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5211", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5212", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5213", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "5214", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "5216", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "521x", 2},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5221x_ctrl, "5221x", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf52223_ctrl, "52221", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf52223_ctrl, "52223", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52230", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52233", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52234", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52235", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5225_ctrl, "5224", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5225_ctrl, "5225", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52277_ctrl, "52274", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52277_ctrl, "52277", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5232", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5233", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5234", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5235", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "523x", 0},
{mcfisa_a|mcfhwdiv|mcfemac, mcf5249_ctrl, "5249", 0},
{mcfisa_a|mcfhwdiv|mcfemac, mcf5250_ctrl, "5250", 0},
{mcfisa_a|mcfhwdiv|mcfemac, mcf5253_ctrl, "5253", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52252", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52254", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52255", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52256", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52258", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52259", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5271_ctrl, "5270", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5271_ctrl, "5271", 0},
{mcfisa_a|mcfhwdiv|mcfmac, mcf5272_ctrl, "5272", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5275_ctrl, "5274", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5275_ctrl, "5275", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5280", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5281", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5282", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "528x", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53011", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53012", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53013", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53014", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53015", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53016", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53017", 0},
{mcfisa_a|mcfhwdiv|mcfmac, mcf5307_ctrl, "5307", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5327", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5328", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5329", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "532x", 0},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "5372", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "5373", -1},
{mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "537x", 0},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfmac, mcf5407_ctrl, "5407",0},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54410", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54415", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54416", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54417", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54418", 0},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54450", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54451", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54452", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54453", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54454", -1},
{mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54455", 0},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5470", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5471", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5472", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5473", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5474", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5475", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "547x", 0},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5480", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5481", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5482", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5483", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5484", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5485", -1},
{mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "548x", 0},
{fido_a, fido_ctrl, "fidoa", 0},
{fido_a, fido_ctrl, "fido", 1},
{0,NULL,NULL, 0}
};
static const struct m68k_cpu *m68k_lookup_cpu
(const char *, const struct m68k_cpu *, int, int *);
static int m68k_set_arch (const char *, int, int);
static int m68k_set_cpu (const char *, int, int);
static int m68k_set_extension (const char *, int, int);
static void m68k_init_arch (void);
/* This is the assembler relaxation table for m68k. m68k is a rich CISC
architecture and we have a lot of relaxation modes. */
/* Macros used in the relaxation code. */
#define TAB(x,y) (((x) << 2) + (y))
#define TABTYPE(x) ((x) >> 2)
/* Relaxation states. */
#define BYTE 0
#define SHORT 1
#define LONG 2
#define SZ_UNDEF 3
/* Here are all the relaxation modes we support. First we can relax ordinary
branches. On 68020 and higher and on CPU32 all branch instructions take
three forms, so on these CPUs all branches always remain as such. When we
have to expand to the LONG form on a 68000, though, we substitute an
absolute jump instead. This is a direct replacement for unconditional
branches and a branch over a jump for conditional branches. However, if the
user requires PIC and disables this with --pcrel, we can only relax between
BYTE and SHORT forms, punting if that isn't enough. This gives us four
different relaxation modes for branches: */
#define BRANCHBWL 0 /* Branch byte, word, or long. */
#define BRABSJUNC 1 /* Absolute jump for LONG, unconditional. */
#define BRABSJCOND 2 /* Absolute jump for LONG, conditional. */
#define BRANCHBW 3 /* Branch byte or word. */
/* We also relax coprocessor branches and DBcc's. All CPUs that support
coprocessor branches support them in word and long forms, so we have only
one relaxation mode for them. DBcc's are word only on all CPUs. We can
relax them to the LONG form with a branch-around sequence. This sequence
can use a long branch (if available) or an absolute jump (if acceptable).
This gives us two relaxation modes. If long branches are not available and
absolute jumps are not acceptable, we don't relax DBcc's. */
#define FBRANCH 4 /* Coprocessor branch. */
#define DBCCLBR 5 /* DBcc relaxable with a long branch. */
#define DBCCABSJ 6 /* DBcc relaxable with an absolute jump. */
/* That's all for instruction relaxation. However, we also relax PC-relative
operands. Specifically, we have three operand relaxation modes. On the
68000 PC-relative operands can only be 16-bit, but on 68020 and higher and
on CPU32 they may be 16-bit or 32-bit. For the latter we relax between the
two. Also PC+displacement+index operands in their simple form (with a non-
suppressed index without memory indirection) are supported on all CPUs, but
on the 68000 the displacement can be 8-bit only, whereas on 68020 and higher
and on CPU32 we relax it to SHORT and LONG forms as well using the extended
form of the PC+displacement+index operand. Finally, some absolute operands
can be relaxed down to 16-bit PC-relative. */
#define PCREL1632 7 /* 16-bit or 32-bit PC-relative. */
#define PCINDEX 8 /* PC + displacement + index. */
#define ABSTOPCREL 9 /* Absolute relax down to 16-bit PC-relative. */
/* This relaxation is required for branches where there is no long
branch and we are in pcrel mode. We generate a bne/beq pair. */
#define BRANCHBWPL 10 /* Branch byte, word or pair of longs
*/
/* Note that calls to frag_var need to specify the maximum expansion
needed; this is currently 12 bytes for bne/beq pair. */
#define FRAG_VAR_SIZE 12
/* The fields are:
How far Forward this mode will reach:
How far Backward this mode will reach:
How many bytes this mode will add to the size of the frag
Which mode to go to if the offset won't fit in this one
Please check tc-m68k.h:md_prepare_relax_scan if changing this table. */
relax_typeS md_relax_table[] =
{
{ 127, -128, 0, TAB (BRANCHBWL, SHORT) },
{ 32767, -32768, 2, TAB (BRANCHBWL, LONG) },
{ 0, 0, 4, 0 },
{ 1, 1, 0, 0 },
{ 127, -128, 0, TAB (BRABSJUNC, SHORT) },
{ 32767, -32768, 2, TAB (BRABSJUNC, LONG) },
{ 0, 0, 4, 0 },
{ 1, 1, 0, 0 },
{ 127, -128, 0, TAB (BRABSJCOND, SHORT) },
{ 32767, -32768, 2, TAB (BRABSJCOND, LONG) },
{ 0, 0, 6, 0 },
{ 1, 1, 0, 0 },
{ 127, -128, 0, TAB (BRANCHBW, SHORT) },
{ 0, 0, 2, 0 },
{ 1, 1, 0, 0 },
{ 1, 1, 0, 0 },
{ 1, 1, 0, 0 }, /* FBRANCH doesn't come BYTE. */
{ 32767, -32768, 2, TAB (FBRANCH, LONG) },
{ 0, 0, 4, 0 },
{ 1, 1, 0, 0 },
{ 1, 1, 0, 0 }, /* DBCC doesn't come BYTE. */
{ 32767, -32768, 2, TAB (DBCCLBR, LONG) },
{ 0, 0, 10, 0 },
{ 1, 1, 0, 0 },
{ 1, 1, 0, 0 }, /* DBCC doesn't come BYTE. */
{ 32767, -32768, 2, TAB (DBCCABSJ, LONG) },
{ 0, 0, 10, 0 },
{ 1, 1, 0, 0 },
{ 1, 1, 0, 0 }, /* PCREL1632 doesn't come BYTE. */
{ 32767, -32768, 2, TAB (PCREL1632, LONG) },
{ 0, 0, 6, 0 },
{ 1, 1, 0, 0 },
{ 125, -130, 0, TAB (PCINDEX, SHORT) },
{ 32765, -32770, 2, TAB (PCINDEX, LONG) },
{ 0, 0, 4, 0 },
{ 1, 1, 0, 0 },
{ 1, 1, 0, 0 }, /* ABSTOPCREL doesn't come BYTE. */
{ 32767, -32768, 2, TAB (ABSTOPCREL, LONG) },
{ 0, 0, 4, 0 },
{ 1, 1, 0, 0 },
{ 127, -128, 0, TAB (BRANCHBWPL, SHORT) },
{ 32767, -32768, 2, TAB (BRANCHBWPL, LONG) },
{ 0, 0, 10, 0 },
{ 1, 1, 0, 0 },
};
/* These are the machine dependent pseudo-ops. These are included so
the assembler can work on the output from the SUN C compiler, which
generates these. */
/* This table describes all the machine specific pseudo-ops the assembler
has to support. The fields are:
pseudo-op name without dot
function to call to execute this pseudo-op
Integer arg to pass to the function. */
const pseudo_typeS md_pseudo_table[] =
{
{"data1", s_data1, 0},
{"data2", s_data2, 0},
{"bss", s_bss, 0},
{"even", s_even, 0},
{"skip", s_space, 0},
{"proc", s_proc, 0},
{"align", s_align_bytes, 0},
{"swbeg", s_ignore, 0},
{"long", m68k_elf_cons, 4},
{"extend", float_cons, 'x'},
{"ldouble", float_cons, 'x'},
{"arch", s_m68k_arch, 0},
{"cpu", s_m68k_cpu, 0},
{"gnu_attribute", m68k_elf_gnu_attribute, 0},
/* The following pseudo-ops are supported for MRI compatibility. */
{"chip", s_chip, 0},
{"comline", s_space, 1},
{"fopt", s_fopt, 0},
{"mask2", s_ignore, 0},
{"opt", s_opt, 0},
{"reg", s_reg, 0},
{"restore", s_restore, 0},
{"save", s_save, 0},
{"if", s_mri_if, 0},
{"if.b", s_mri_if, 'b'},
{"if.w", s_mri_if, 'w'},
{"if.l", s_mri_if, 'l'},
{"else", s_mri_else, 0},
{"else.s", s_mri_else, 's'},
{"else.l", s_mri_else, 'l'},
{"endi", s_mri_endi, 0},
{"break", s_mri_break, 0},
{"break.s", s_mri_break, 's'},
{"break.l", s_mri_break, 'l'},
{"next", s_mri_next, 0},
{"next.s", s_mri_next, 's'},
{"next.l", s_mri_next, 'l'},
{"for", s_mri_for, 0},
{"for.b", s_mri_for, 'b'},
{"for.w", s_mri_for, 'w'},
{"for.l", s_mri_for, 'l'},
{"endf", s_mri_endf, 0},
{"repeat", s_mri_repeat, 0},
{"until", s_mri_until, 0},
{"until.b", s_mri_until, 'b'},
{"until.w", s_mri_until, 'w'},
{"until.l", s_mri_until, 'l'},
{"while", s_mri_while, 0},
{"while.b", s_mri_while, 'b'},
{"while.w", s_mri_while, 'w'},
{"while.l", s_mri_while, 'l'},
{"endw", s_mri_endw, 0},
{0, 0, 0}
};
/* The mote pseudo ops are put into the opcode table, since they
don't start with a . they look like opcodes to gas. */
const pseudo_typeS mote_pseudo_table[] =
{
{"dcl", cons, 4},
{"dc", cons, 2},
{"dcw", cons, 2},
{"dcb", cons, 1},
{"dsl", s_space, 4},
{"ds", s_space, 2},
{"dsw", s_space, 2},
{"dsb", s_space, 1},
{"xdef", s_globl, 0},
{"align", s_align_bytes, 0},
{0, 0, 0}
};
/* Truncate and sign-extend at 32 bits, so that building on a 64-bit host
gives identical results to a 32-bit host. */
#define TRUNC(X) ((valueT) (X) & 0xffffffff)
#define SEXT(X) ((TRUNC (X) ^ 0x80000000) - 0x80000000)
#define issbyte(x) ((valueT) SEXT (x) + 0x80 < 0x100)
#define isubyte(x) ((valueT) TRUNC (x) < 0x100)
#define issword(x) ((valueT) SEXT (x) + 0x8000 < 0x10000)
#define isuword(x) ((valueT) TRUNC (x) < 0x10000)
#define isbyte(x) ((valueT) SEXT (x) + 0xff < 0x1ff)
#define isword(x) ((valueT) SEXT (x) + 0xffff < 0x1ffff)
#define islong(x) (1)
static char notend_table[256];
static char alt_notend_table[256];
#define notend(s) \
(! (notend_table[(unsigned char) *s] \
|| (*s == ':' \
&& alt_notend_table[(unsigned char) s[1]])))
/* Return zero if the reference to SYMBOL from within the same segment may
be relaxed. */
/* On an ELF system, we can't relax an externally visible symbol,
because it may be overridden by a shared library. However, if
TARGET_OS is "elf", then we presume that we are assembling for an
embedded system, in which case we don't have to worry about shared
libraries, and we can relax any external sym. */
#define relaxable_symbol(symbol) \
(!((S_IS_EXTERNAL (symbol) && EXTERN_FORCE_RELOC) \
|| S_IS_WEAK (symbol)))
/* Compute the relocation code for a fixup of SIZE bytes, using pc
relative relocation if PCREL is non-zero. PIC says whether a special
pic relocation was requested. */
static bfd_reloc_code_real_type
get_reloc_code (int size, int pcrel, enum pic_relocation pic)
{
switch (pic)
{
case pic_got_pcrel:
switch (size)
{
case 1:
return BFD_RELOC_8_GOT_PCREL;
case 2:
return BFD_RELOC_16_GOT_PCREL;
case 4:
return BFD_RELOC_32_GOT_PCREL;
}
break;
case pic_got_off:
switch (size)
{
case 1:
return BFD_RELOC_8_GOTOFF;
case 2:
return BFD_RELOC_16_GOTOFF;
case 4:
return BFD_RELOC_32_GOTOFF;
}
break;
case pic_plt_pcrel:
switch (size)
{
case 1:
return BFD_RELOC_8_PLT_PCREL;
case 2:
return BFD_RELOC_16_PLT_PCREL;
case 4:
return BFD_RELOC_32_PLT_PCREL;
}
break;
case pic_plt_off:
switch (size)
{
case 1:
return BFD_RELOC_8_PLTOFF;
case 2:
return BFD_RELOC_16_PLTOFF;
case 4:
return BFD_RELOC_32_PLTOFF;
}
break;
case pic_tls_gd:
switch (size)
{
case 1:
return BFD_RELOC_68K_TLS_GD8;
case 2:
return BFD_RELOC_68K_TLS_GD16;
case 4:
return BFD_RELOC_68K_TLS_GD32;
}
break;
case pic_tls_ldm:
switch (size)
{
case 1:
return BFD_RELOC_68K_TLS_LDM8;
case 2:
return BFD_RELOC_68K_TLS_LDM16;
case 4:
return BFD_RELOC_68K_TLS_LDM32;
}
break;
case pic_tls_ldo:
switch (size)
{
case 1:
return BFD_RELOC_68K_TLS_LDO8;
case 2:
return BFD_RELOC_68K_TLS_LDO16;
case 4:
return BFD_RELOC_68K_TLS_LDO32;
}
break;
case pic_tls_ie:
switch (size)
{
case 1:
return BFD_RELOC_68K_TLS_IE8;
case 2:
return BFD_RELOC_68K_TLS_IE16;
case 4:
return BFD_RELOC_68K_TLS_IE32;
}
break;
case pic_tls_le:
switch (size)
{
case 1:
return BFD_RELOC_68K_TLS_LE8;
case 2:
return BFD_RELOC_68K_TLS_LE16;
case 4:
return BFD_RELOC_68K_TLS_LE32;
}
break;
case pic_none:
if (pcrel)
{
switch (size)
{
case 1:
return BFD_RELOC_8_PCREL;
case 2:
return BFD_RELOC_16_PCREL;
case 4:
return BFD_RELOC_32_PCREL;
}
}
else
{
switch (size)
{
case 1:
return BFD_RELOC_8;
case 2:
return BFD_RELOC_16;
case 4:
return BFD_RELOC_32;
}
}
}
if (pcrel)
{
if (pic == pic_none)
as_bad (_("Can not do %d byte pc-relative relocation"), size);
else
as_bad (_("Can not do %d byte pc-relative pic relocation"), size);
}
else
{
if (pic == pic_none)
as_bad (_("Can not do %d byte relocation"), size);
else
as_bad (_("Can not do %d byte pic relocation"), size);
}
return BFD_RELOC_NONE;
}
/* Here we decide which fixups can be adjusted to make them relative
to the beginning of the section instead of the symbol. Basically
we need to make sure that the dynamic relocations are done
correctly, so in some cases we force the original symbol to be
used. */
int
tc_m68k_fix_adjustable (fixS *fixP)
{
/* Adjust_reloc_syms doesn't know about the GOT. */
switch (fixP->fx_r_type)
{
case BFD_RELOC_8_GOT_PCREL:
case BFD_RELOC_16_GOT_PCREL:
case BFD_RELOC_32_GOT_PCREL:
case BFD_RELOC_8_GOTOFF:
case BFD_RELOC_16_GOTOFF:
case BFD_RELOC_32_GOTOFF:
case BFD_RELOC_8_PLT_PCREL:
case BFD_RELOC_16_PLT_PCREL:
case BFD_RELOC_32_PLT_PCREL:
case BFD_RELOC_8_PLTOFF:
case BFD_RELOC_16_PLTOFF:
case BFD_RELOC_32_PLTOFF:
case BFD_RELOC_68K_TLS_GD32:
case BFD_RELOC_68K_TLS_GD16:
case BFD_RELOC_68K_TLS_GD8:
case BFD_RELOC_68K_TLS_LDM32:
case BFD_RELOC_68K_TLS_LDM16:
case BFD_RELOC_68K_TLS_LDM8:
case BFD_RELOC_68K_TLS_LDO32:
case BFD_RELOC_68K_TLS_LDO16:
case BFD_RELOC_68K_TLS_LDO8:
case BFD_RELOC_68K_TLS_IE32:
case BFD_RELOC_68K_TLS_IE16:
case BFD_RELOC_68K_TLS_IE8:
case BFD_RELOC_68K_TLS_LE32:
case BFD_RELOC_68K_TLS_LE16:
case BFD_RELOC_68K_TLS_LE8:
return 0;
case BFD_RELOC_VTABLE_INHERIT:
case BFD_RELOC_VTABLE_ENTRY:
return 0;
default:
return 1;
}
}
arelent *
tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
{
arelent *reloc;
bfd_reloc_code_real_type code;
/* If the tcbit is set, then this was a fixup of a negative value
that was never resolved. We do not have a reloc to handle this,
so just return. We assume that other code will have detected this
situation and produced a helpful error message, so we just tell the
user that the reloc cannot be produced. */
if (fixp->fx_tcbit)
{
if (fixp->fx_addsy)
as_bad_where (fixp->fx_file, fixp->fx_line,
_("Unable to produce reloc against symbol '%s'"),
S_GET_NAME (fixp->fx_addsy));
return NULL;
}
if (fixp->fx_r_type != BFD_RELOC_NONE)
{
code = fixp->fx_r_type;
/* Since DIFF_EXPR_OK is defined in tc-m68k.h, it is possible
that fixup_segment converted a non-PC relative reloc into a
PC relative reloc. In such a case, we need to convert the
reloc code. */
if (fixp->fx_pcrel)
{
switch (code)
{
case BFD_RELOC_8:
code = BFD_RELOC_8_PCREL;
break;
case BFD_RELOC_16:
code = BFD_RELOC_16_PCREL;
break;
case BFD_RELOC_32:
code = BFD_RELOC_32_PCREL;
break;
case BFD_RELOC_8_PCREL:
case BFD_RELOC_16_PCREL:
case BFD_RELOC_32_PCREL:
case BFD_RELOC_8_GOT_PCREL:
case BFD_RELOC_16_GOT_PCREL:
case BFD_RELOC_32_GOT_PCREL:
case BFD_RELOC_8_GOTOFF:
case BFD_RELOC_16_GOTOFF:
case BFD_RELOC_32_GOTOFF:
case BFD_RELOC_8_PLT_PCREL:
case BFD_RELOC_16_PLT_PCREL:
case BFD_RELOC_32_PLT_PCREL:
case BFD_RELOC_8_PLTOFF:
case BFD_RELOC_16_PLTOFF:
case BFD_RELOC_32_PLTOFF:
case BFD_RELOC_68K_TLS_GD32:
case BFD_RELOC_68K_TLS_GD16:
case BFD_RELOC_68K_TLS_GD8:
case BFD_RELOC_68K_TLS_LDM32:
case BFD_RELOC_68K_TLS_LDM16:
case BFD_RELOC_68K_TLS_LDM8:
case BFD_RELOC_68K_TLS_LDO32:
case BFD_RELOC_68K_TLS_LDO16:
case BFD_RELOC_68K_TLS_LDO8:
case BFD_RELOC_68K_TLS_IE32:
case BFD_RELOC_68K_TLS_IE16:
case BFD_RELOC_68K_TLS_IE8:
case BFD_RELOC_68K_TLS_LE32:
case BFD_RELOC_68K_TLS_LE16:
case BFD_RELOC_68K_TLS_LE8:
break;
default:
as_bad_where (fixp->fx_file, fixp->fx_line,
_("Cannot make %s relocation PC relative"),
bfd_get_reloc_code_name (code));
}
}
}
else
{
#define F(SZ,PCREL) (((SZ) << 1) + (PCREL))
switch (F (fixp->fx_size, fixp->fx_pcrel))
{
#define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break
MAP (1, 0, BFD_RELOC_8);
MAP (2, 0, BFD_RELOC_16);
MAP (4, 0, BFD_RELOC_32);
MAP (1, 1, BFD_RELOC_8_PCREL);
MAP (2, 1, BFD_RELOC_16_PCREL);
MAP (4, 1, BFD_RELOC_32_PCREL);
default:
abort ();
}
}
#undef F
#undef MAP
reloc = XNEW (arelent);
reloc->sym_ptr_ptr = XNEW (asymbol *);
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
if (!fixp->fx_pcrel)
reloc->addend = fixp->fx_addnumber;
else
reloc->addend = (section->vma
+ fixp->fx_pcrel_adjust
+ fixp->fx_addnumber
+ md_pcrel_from (fixp));
reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
gas_assert (reloc->howto != 0);
return reloc;
}
/* Handle of the OPCODE hash table. NULL means any use before
m68k_ip_begin() will crash. */
static struct hash_control *op_hash;
/* Assemble an m68k instruction. */
static void
m68k_ip (char *instring)
{
char *p;
struct m68k_op *opP;
const struct m68k_incant *opcode;
const char *s;
int tmpreg = 0, baseo = 0, outro = 0, nextword;
char *pdot, *pdotmove;
enum m68k_size siz1, siz2;
char c;
int losing;
int opsfound;
struct m68k_op operands_backup[6];
LITTLENUM_TYPE words[6];
LITTLENUM_TYPE *wordp;
unsigned long ok_arch = 0;
if (*instring == ' ')
instring++; /* Skip leading whitespace. */
/* Scan up to end of operation-code, which MUST end in end-of-string
or exactly 1 space. */
pdot = 0;
for (p = instring; *p != '\0'; p++)
{
if (*p == ' ')
break;
if (*p == '.')
pdot = p;
}
if (p == instring)
{
the_ins.error = _("No operator");
return;
}
/* p now points to the end of the opcode name, probably whitespace.
Make sure the name is null terminated by clobbering the
whitespace, look it up in the hash table, then fix it back.
Remove a dot, first, since the opcode tables have none. */
if (pdot != NULL)
{
for (pdotmove = pdot; pdotmove < p; pdotmove++)
*pdotmove = pdotmove[1];
p--;
}
c = *p;
*p = '\0';
opcode = (const struct m68k_incant *) hash_find (op_hash, instring);
*p = c;
if (pdot != NULL)
{
for (pdotmove = p; pdotmove > pdot; pdotmove--)
*pdotmove = pdotmove[-1];
*pdot = '.';
++p;
}
if (opcode == NULL)
{
the_ins.error = _("Unknown operator");
return;
}
/* Found a legitimate opcode, start matching operands. */
while (*p == ' ')
++p;
if (opcode->m_operands == 0)
{
char *old = input_line_pointer;
*old = '\n';
input_line_pointer = p;
/* Ahh - it's a motorola style pseudo op. */
mote_pseudo_table[opcode->m_opnum].poc_handler
(mote_pseudo_table[opcode->m_opnum].poc_val);
input_line_pointer = old;
*old = 0;
return;
}
if (flag_mri && opcode->m_opnum == 0)
{
/* In MRI mode, random garbage is allowed after an instruction
which accepts no operands. */
the_ins.args = opcode->m_operands;
the_ins.numargs = opcode->m_opnum;
the_ins.numo = opcode->m_codenum;
the_ins.opcode[0] = getone (opcode);
the_ins.opcode[1] = gettwo (opcode);
return;
}
for (opP = &the_ins.operands[0]; *p; opP++)
{
p = crack_operand (p, opP);
if (opP->error)
{
the_ins.error = opP->error;
return;
}
}
opsfound = opP - &the_ins.operands[0];
/* This ugly hack is to support the floating pt opcodes in their
standard form. Essentially, we fake a first entry of type COP#1 */
if (opcode->m_operands[0] == 'I')
{
int n;
for (n = opsfound; n > 0; --n)
the_ins.operands[n] = the_ins.operands[n - 1];
memset (&the_ins.operands[0], '\0', sizeof (the_ins.operands[0]));
the_ins.operands[0].mode = CONTROL;
the_ins.operands[0].reg = m68k_float_copnum;
opsfound++;
}
/* We've got the operands. Find an opcode that'll accept them. */
for (losing = 0;;)
{
/* If we didn't get the right number of ops, or we have no
common model with this pattern then reject this pattern. */
ok_arch |= opcode->m_arch;
if (opsfound != opcode->m_opnum
|| ((opcode->m_arch & current_architecture) == 0))
++losing;
else
{
int i;
/* Make a copy of the operands of this insn so that
we can modify them safely, should we want to. */
gas_assert (opsfound <= (int) ARRAY_SIZE (operands_backup));
for (i = 0; i < opsfound; i++)
operands_backup[i] = the_ins.operands[i];
for (s = opcode->m_operands, opP = &operands_backup[0];
*s && !losing;
s += 2, opP++)
{
/* Warning: this switch is huge! */
/* I've tried to organize the cases into this order:
non-alpha first, then alpha by letter. Lower-case
goes directly before uppercase counterpart. */
/* Code with multiple case ...: gets sorted by the lowest
case ... it belongs to. I hope this makes sense. */
switch (*s)
{
case '!':
switch (opP->mode)
{
case IMMED:
case DREG:
case AREG:
case FPREG:
case CONTROL:
case AINC:
case ADEC:
case REGLST:
losing++;
break;
default:
break;
}
break;
case '<':
switch (opP->mode)
{
case DREG:
case AREG:
case FPREG:
case CONTROL:
case IMMED:
case ADEC:
case REGLST:
losing++;
break;
default:
break;
}
break;
case '>':
switch (opP->mode)
{
case DREG:
case AREG:
case FPREG:
case CONTROL:
case IMMED:
case AINC:
case REGLST:
losing++;
break;
case ABSL:
break;
default:
if (opP->reg == PC
|| opP->reg == ZPC)
losing++;
break;
}
break;
case 'm':
switch (opP->mode)
{
case DREG:
case AREG:
case AINDR:
case AINC:
case ADEC:
break;
default:
losing++;
}
break;
case 'n':
switch (opP->mode)
{
case DISP:
break;
default:
losing++;
}
break;
case 'o':
switch (opP->mode)
{
case BASE:
case ABSL:
case IMMED:
break;
default:
losing++;
}
break;
case 'p':
switch (opP->mode)
{
case DREG:
case AREG:
case AINDR:
case AINC:
case ADEC:
break;
case DISP:
if (opP->reg == PC || opP->reg == ZPC)
losing++;
break;
default:
losing++;
}
break;
case 'q':
switch (opP->mode)
{
case DREG:
case AINDR:
case AINC:
case ADEC:
break;
case DISP:
if (opP->reg == PC || opP->reg == ZPC)
losing++;
break;
default:
losing++;
break;
}
break;
case 'v':
switch (opP->mode)
{
case DREG:
case AINDR:
case AINC:
case ADEC:
case ABSL:
break;
case DISP:
if (opP->reg == PC || opP->reg == ZPC)
losing++;
break;
default:
losing++;
break;
}
break;
case '#':
if (opP->mode != IMMED)
losing++;
else if (s[1] == 'b'
&& ! isvar (&opP->disp)
&& (opP->disp.exp.X_op != O_constant
|| ! isbyte (opP->disp.exp.X_add_number)))
losing++;
else if (s[1] == 'B'
&& ! isvar (&opP->disp)
&& (opP->disp.exp.X_op != O_constant
|| ! issbyte (opP->disp.exp.X_add_number)))
losing++;
else if (s[1] == 'w'
&& ! isvar (&opP->disp)
&& (opP->disp.exp.X_op != O_constant
|| ! isword (opP->disp.exp.X_add_number)))
losing++;
else if (s[1] == 'W'
&& ! isvar (&opP->disp)
&& (opP->disp.exp.X_op != O_constant
|| ! issword (opP->disp.exp.X_add_number)))
losing++;
break;
case '^':
case 'T':
if (opP->mode != IMMED)
losing++;
break;
case '$':
if (opP->mode == AREG
|| opP->mode == CONTROL
|| opP->mode == FPREG
|| opP->mode == IMMED
|| opP->mode == REGLST
|| (opP->mode != ABSL
&& (opP->reg == PC
|| opP->reg == ZPC)))
losing++;
break;
case '%':
if (opP->mode == CONTROL
|| opP->mode == FPREG
|| opP->mode == REGLST
|| opP->mode == IMMED
|| (opP->mode != ABSL
&& (opP->reg == PC
|| opP->reg == ZPC)))
losing++;
break;
case '&':
switch (opP->mode)
{
case DREG:
case AREG:
case FPREG:
case CONTROL:
case IMMED:
case AINC:
case ADEC:
case REGLST:
losing++;
break;
case ABSL:
break;
default:
if (opP->reg == PC
|| opP->reg == ZPC)
losing++;
break;
}
break;
case '*':
if (opP->mode == CONTROL
|| opP->mode == FPREG
|| opP->mode == REGLST)
losing++;
break;
case '+':
if (opP->mode != AINC)
losing++;
break;
case '-':
if (opP->mode != ADEC)
losing++;
break;
case '/':
switch (opP->mode)
{
case AREG:
case CONTROL:
case FPREG:
case AINC:
case ADEC:
case IMMED:
case REGLST:
losing++;
break;
default:
break;
}
break;
case ';':
switch (opP->mode)
{
case AREG:
case CONTROL:
case FPREG:
case REGLST:
losing++;
break;
default:
break;
}
break;
case '?':
switch (opP->mode)
{
case AREG:
case CONTROL:
case FPREG:
case AINC:
case ADEC:
case IMMED:
case REGLST:
losing++;
break;
case ABSL:
break;
default:
if (opP->reg == PC || opP->reg == ZPC)
losing++;
break;
}
break;
case '@':
switch (opP->mode)
{
case AREG:
case CONTROL:
case FPREG:
case IMMED:
case REGLST:
losing++;
break;
default:
break;
}
break;
case '~': /* For now! (JF FOO is this right?) */
switch (opP->mode)
{
case DREG:
case AREG:
case CONTROL:
case FPREG:
case IMMED:
case REGLST:
losing++;
break;
case ABSL:
break;
default:
if (opP->reg == PC
|| opP->reg == ZPC)
losing++;
break;
}
break;
case '3':
if (opP->mode != CONTROL
|| (opP->reg != TT0 && opP->reg != TT1))
losing++;
break;
case 'A':
if (opP->mode != AREG)
losing++;
break;
case 'a':
if (opP->mode != AINDR)
++losing;
break;
case '4':
if (opP->mode != AINDR && opP->mode != AINC && opP->mode != ADEC
&& (opP->mode != DISP
|| opP->reg < ADDR0
|| opP->reg > ADDR7))
++losing;
break;
case 'B': /* FOO */
if (opP->mode != ABSL
|| (flag_long_jumps
&& strncmp (instring, "jbsr", 4) == 0))
losing++;
break;
case 'b':
switch (opP->mode)
{
case IMMED:
case ABSL:
case AREG:
case FPREG:
case CONTROL:
case POST:
case PRE:
case REGLST:
losing++;
break;
default:
break;
}
break;
case 'C':
if (opP->mode != CONTROL || opP->reg != CCR)
losing++;
break;
case 'd':
if (opP->mode != DISP
|| opP->reg < ADDR0
|| opP->reg > ADDR7)
losing++;
break;
case 'D':
if (opP->mode != DREG)
losing++;
break;
case 'E':
if (opP->reg != ACC)
losing++;
break;
case 'e':
if (opP->reg != ACC && opP->reg != ACC1
&& opP->reg != ACC2 && opP->reg != ACC3)
losing++;
break;
case 'F':
if (opP->mode != FPREG)
losing++;
break;
case 'G':
if (opP->reg != MACSR)
losing++;
break;
case 'g':
if (opP->reg != ACCEXT01 && opP->reg != ACCEXT23)
losing++;
break;
case 'H':
if (opP->reg != MASK)
losing++;
break;
case 'I':
if (opP->mode != CONTROL
|| opP->reg < COP0
|| opP->reg > COP7)
losing++;
break;
case 'i':
if (opP->mode != LSH && opP->mode != RSH)
losing++;
break;
case 'J':
if (opP->mode != CONTROL
|| opP->reg < USP
|| opP->reg > last_movec_reg
|| !control_regs)
losing++;
else
{
const enum m68k_register *rp;
for (rp = control_regs; *rp; rp++)
{
if (*rp == opP->reg)
break;
/* In most CPUs RAMBAR refers to control reg
c05 (RAMBAR1), but a few CPUs have it
refer to c04 (RAMBAR0). */
else if (*rp == RAMBAR_ALT && opP->reg == RAMBAR)
{
opP->reg = RAMBAR_ALT;
break;
}
}
if (*rp == 0)
losing++;
}
break;
case 'k':
if (opP->mode != IMMED)
losing++;
break;
case 'l':
case 'L':
if (opP->mode == DREG
|| opP->mode == AREG
|| opP->mode == FPREG)
{
if (s[1] == '8')
losing++;
else
{
switch (opP->mode)
{
case DREG:
opP->mask = 1 << (opP->reg - DATA0);
break;
case AREG:
opP->mask = 1 << (opP->reg - ADDR0 + 8);
break;
case FPREG:
opP->mask = 1 << (opP->reg - FP0 + 16);
break;
default:
abort ();
}
opP->mode = REGLST;
}
}
else if (opP->mode == CONTROL)
{
if (s[1] != '8')
losing++;
else
{
switch (opP->reg)
{
case FPI:
opP->mask = 1 << 24;
break;
case FPS:
opP->mask = 1 << 25;
break;
case FPC:
opP->mask = 1 << 26;
break;
default:
losing++;
break;
}
opP->mode = REGLST;
}
}
else if (opP->mode != REGLST)
losing++;
else if (s[1] == '8' && (opP->mask & 0x0ffffff) != 0)
losing++;
else if (s[1] == '3' && (opP->mask & 0x7000000) != 0)
losing++;
break;
case 'M':
if (opP->mode != IMMED)
losing++;
else if (opP->disp.exp.X_op != O_constant
|| ! issbyte (opP->disp.exp.X_add_number))
losing++;
else if (! m68k_quick
&& instring[3] != 'q'
&& instring[4] != 'q')
losing++;
break;
case 'O':
if (opP->mode != DREG
&& opP->mode != IMMED
&& opP->mode != ABSL)
losing++;
break;
case 'Q':
if (opP->mode != IMMED)
losing++;
else if (opP->disp.exp.X_op != O_constant
|| TRUNC (opP->disp.exp.X_add_number) - 1 > 7)
losing++;
else if (! m68k_quick
&& (strncmp (instring, "add", 3) == 0
|| strncmp (instring, "sub", 3) == 0)
&& instring[3] != 'q')
losing++;
break;
case 'R':
if (opP->mode != DREG && opP->mode != AREG)
losing++;
break;
case 'r':
if (opP->mode != AINDR
&& (opP->mode != BASE
|| (opP->reg != 0
&& opP->reg != ZADDR0)
|| opP->disp.exp.X_op != O_absent
|| ((opP->index.reg < DATA0
|| opP->index.reg > DATA7)
&& (opP->index.reg < ADDR0
|| opP->index.reg > ADDR7))
|| opP->index.size != SIZE_UNSPEC
|| opP->index.scale != 1))
losing++;
break;
case 's':
if (opP->mode != CONTROL
|| ! (opP->reg == FPI
|| opP->reg == FPS
|| opP->reg == FPC))
losing++;
break;
case 'S':
if (opP->mode != CONTROL || opP->reg != SR)
losing++;
break;
case 't':
if (opP->mode != IMMED)
losing++;
else if (opP->disp.exp.X_op != O_constant
|| TRUNC (opP->disp.exp.X_add_number) > 7)
losing++;
break;
case 'U':
if (opP->mode != CONTROL || opP->reg != USP)
losing++;
break;
case 'x':
if (opP->mode != IMMED)
losing++;
else if (opP->disp.exp.X_op != O_constant
|| (TRUNC (opP->disp.exp.X_add_number) != 0xffffffff
&& TRUNC (opP->disp.exp.X_add_number) - 1 > 6))
losing++;
break;
case 'j':
if (opP->mode != IMMED)
losing++;
else if (opP->disp.exp.X_op != O_constant
|| TRUNC (opP->disp.exp.X_add_number) - 1 > 7)
losing++;
break;
case 'K':
if (opP->mode != IMMED)
losing++;
else if (opP->disp.exp.X_op != O_constant
|| TRUNC (opP->disp.exp.X_add_number) > 511)
losing++;
break;
/* JF these are out of order. We could put them
in order if we were willing to put up with
bunches of #ifdef m68851s in the code.
Don't forget that you need these operands
to use 68030 MMU instructions. */
#ifndef NO_68851
/* Memory addressing mode used by pflushr. */
case '|':
if (opP->mode == CONTROL
|| opP->mode == FPREG
|| opP->mode == DREG
|| opP->mode == AREG
|| opP->mode == REGLST)
losing++;
/* We should accept immediate operands, but they
supposedly have to be quad word, and we don't
handle that. I would like to see what a Motorola
assembler does before doing something here. */
if (opP->mode == IMMED)
losing++;
break;
case 'f':
if (opP->mode != CONTROL
|| (opP->reg != SFC && opP->reg != DFC))
losing++;
break;
case '0':
if (opP->mode != CONTROL || opP->reg != TC)
losing++;
break;
case '1':
if (opP->mode != CONTROL || opP->reg != AC)
losing++;
break;
case '2':
if (opP->mode != CONTROL
|| (opP->reg != CAL
&& opP->reg != VAL
&& opP->reg != SCC))
losing++;
break;
case 'V':
if (opP->mode != CONTROL
|| opP->reg != VAL)
losing++;
break;
case 'W':
if (opP->mode != CONTROL
|| (opP->reg != DRP
&& opP->reg != SRP
&& opP->reg != CRP))
losing++;
break;
case 'w':
switch (opP->mode)
{
case IMMED:
case ABSL:
case AREG:
case DREG:
case FPREG:
case CONTROL:
case POST:
case PRE:
case REGLST:
losing++;
break;
default:
break;
}
break;
case 'X':
if (opP->mode != CONTROL
|| (!(opP->reg >= BAD && opP->reg <= BAD + 7)
&& !(opP->reg >= BAC && opP->reg <= BAC + 7)))
losing++;
break;
case 'Y':
if (opP->mode != CONTROL || opP->reg != PSR)
losing++;
break;
case 'Z':
if (opP->mode != CONTROL || opP->reg != PCSR)
losing++;
break;
#endif
case 'c':
if (opP->mode != CONTROL
|| (opP->reg != NC
&& opP->reg != IC
&& opP->reg != DC
&& opP->reg != BC))
losing++;
break;
case '_':
if (opP->mode != ABSL)
++losing;
break;
case 'u':
if (opP->reg < DATA0L || opP->reg > ADDR7U)
losing++;
/* FIXME: kludge instead of fixing parser:
upper/lower registers are *not* CONTROL
registers, but ordinary ones. */
if ((opP->reg >= DATA0L && opP->reg <= DATA7L)
|| (opP->reg >= DATA0U && opP->reg <= DATA7U))
opP->mode = DREG;
else
opP->mode = AREG;
break;
case 'y':
if (!(opP->mode == AINDR
|| (opP->mode == DISP
&& !(opP->reg == PC || opP->reg == ZPC))))
losing++;
break;
case 'z':
if (!(opP->mode == AINDR || opP->mode == DISP))
losing++;
break;
default:
abort ();
}
if (losing)
break;
}
/* Since we have found the correct instruction, copy
in the modifications that we may have made. */
if (!losing)
for (i = 0; i < opsfound; i++)
the_ins.operands[i] = operands_backup[i];
}
if (!losing)
break;
opcode = opcode->m_next;
if (!opcode)
{
if (ok_arch
&& !(ok_arch & current_architecture))
{
const struct m68k_cpu *cpu;
int any = 0;
size_t space = 400;
char *buf = XNEWVEC (char, space + 1);
size_t len;
int paren = 1;
the_ins.error = buf;
/* Make sure there's a NUL at the end of the buffer -- strncpy
won't write one when it runs out of buffer. */
buf[space] = 0;
#define APPEND(STRING) \
(strncpy (buf, STRING, space), len = strlen (buf), buf += len, space -= len)
APPEND (_("invalid instruction for this architecture; needs "));
switch (ok_arch)
{
case mcfisa_a:
APPEND ("ColdFire ISA_A");
break;
case mcfhwdiv:
APPEND ("ColdFire ");
APPEND (_("hardware divide"));
break;
case mcfisa_aa:
APPEND ("ColdFire ISA_A+");
break;
case mcfisa_b:
APPEND ("ColdFire ISA_B");
break;
case mcfisa_c:
APPEND ("ColdFire ISA_C");
break;
case cfloat:
APPEND ("ColdFire fpu");
break;
case mfloat:
APPEND ("M68K fpu");
break;
case mmmu:
APPEND ("M68K mmu");
break;
case m68020up:
APPEND ("68020 ");
APPEND (_("or higher"));
break;
case m68000up:
APPEND ("68000 ");
APPEND (_("or higher"));
break;
case m68010up:
APPEND ("68010 ");
APPEND (_("or higher"));
break;
default:
paren = 0;
}
if (paren)
APPEND (" (");
for (cpu = m68k_cpus; cpu->name; cpu++)
if (!cpu->alias && (cpu->arch & ok_arch))
{
const struct m68k_cpu *alias;
int seen_master = 0;
if (any)
APPEND (", ");
any = 0;
APPEND (cpu->name);
for (alias = cpu; alias != m68k_cpus; alias--)
if (alias[-1].alias >= 0)
break;
for (; !seen_master || alias->alias > 0; alias++)
{
if (!alias->alias)
seen_master = 1;
else
{
if (any)
APPEND (", ");
else
APPEND (" [");
APPEND (alias->name);
any = 1;
}
}
if (any)
APPEND ("]");
any = 1;
}
if (paren)
APPEND (")");
#undef APPEND
if (!space)
{
/* We ran out of space, so replace the end of the list
with ellipsis. */
buf -= 4;
while (*buf != ' ')
buf--;
strcpy (buf, " ...");
}
}
else
the_ins.error = _("operands mismatch");
return;
}
losing = 0;
}
/* Now assemble it. */
the_ins.args = opcode->m_operands;
the_ins.numargs = opcode->m_opnum;
the_ins.numo = opcode->m_codenum;
the_ins.opcode[0] = getone (opcode);
the_ins.opcode[1] = gettwo (opcode);
for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++)
{
int have_disp = 0;
int use_pl = 0;
/* This switch is a doozy.
Watch the first step; it's a big one! */
switch (s[0])
{
case '*':
case '~':
case '%':
case ';':
case '@':
case '!':
case '&':
case '$':
case '?':
case '/':
case '<':
case '>':
case 'b':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'v':
case 'w':
case 'y':
case 'z':
case '4':
#ifndef NO_68851
case '|':
#endif
switch (opP->mode)
{
case IMMED:
tmpreg = 0x3c; /* 7.4 */
if (strchr ("bwl", s[1]))
nextword = get_num (&opP->disp, 90);
else
nextword = get_num (&opP->disp, 0);
if (isvar (&opP->disp))
add_fix (s[1], &opP->disp, 0, 0);
switch (s[1])
{
case 'b':
if (!isbyte (nextword))
opP->error = _("operand out of range");
addword (nextword);
baseo = 0;
break;
case 'w':
if (!isword (nextword))
opP->error = _("operand out of range");
addword (nextword);
baseo = 0;
break;
case 'W':
if (!issword (nextword))
opP->error = _("operand out of range");
addword (nextword);
baseo = 0;
break;
case 'l':
addword (nextword >> 16);
addword (nextword);
baseo = 0;
break;
case 'f':
baseo = 2;
outro = 8;
break;
case 'F':
baseo = 4;
outro = 11;
break;
case 'x':
baseo = 6;
outro = 15;
break;
case 'p':
baseo = 6;
outro = -1;
break;
default:
abort ();
}
if (!baseo)
break;
/* We gotta put out some float. */
if (op (&opP->disp) != O_big)
{
valueT val;
int gencnt;
/* Can other cases happen here? */
if (op (&opP->disp) != O_constant)
abort ();
val = (valueT) offs (&opP->disp);
gencnt = 0;
do
{
generic_bignum[gencnt] = (LITTLENUM_TYPE) val;
val >>= LITTLENUM_NUMBER_OF_BITS;
++gencnt;
}
while (val != 0);
offs (&opP->disp) = gencnt;
}
if (offs (&opP->disp) > 0)
{
if (offs (&opP->disp) > baseo)
{
as_warn (_("Bignum too big for %c format; truncated"),
s[1]);
offs (&opP->disp) = baseo;
}
baseo -= offs (&opP->disp);
while (baseo--)
addword (0);
for (wordp = generic_bignum + offs (&opP->disp) - 1;
offs (&opP->disp)--;
--wordp)
addword (*wordp);
break;
}
gen_to_words (words, baseo, (long) outro);
for (wordp = words; baseo--; wordp++)
addword (*wordp);
break;
case DREG:
tmpreg = opP->reg - DATA; /* 0.dreg */
break;
case AREG:
tmpreg = 0x08 + opP->reg - ADDR; /* 1.areg */
break;
case AINDR:
tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
break;
case ADEC:
tmpreg = 0x20 + opP->reg - ADDR; /* 4.areg */
break;
case AINC:
tmpreg = 0x18 + opP->reg - ADDR; /* 3.areg */
break;
case DISP:
nextword = get_num (&opP->disp, 90);
/* Convert mode 5 addressing with a zero offset into
mode 2 addressing to reduce the instruction size by a
word. */
if (! isvar (&opP->disp)
&& (nextword == 0)
&& (opP->disp.size == SIZE_UNSPEC)
&& (opP->reg >= ADDR0)
&& (opP->reg <= ADDR7))
{
tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
break;
}
if (opP->reg == PC
&& ! isvar (&opP->disp)
&& m68k_abspcadd)
{
opP->disp.exp.X_op = O_symbol;
opP->disp.exp.X_add_symbol =
section_symbol (absolute_section);
}
/* Force into index mode. Hope this works. */
/* We do the first bit for 32-bit displacements, and the
second bit for 16 bit ones. It is possible that we
should make the default be WORD instead of LONG, but
I think that'd break GCC, so we put up with a little
inefficiency for the sake of working output. */
if (!issword (nextword)
|| (isvar (&opP->disp)
&& ((opP->disp.size == SIZE_UNSPEC
&& flag_short_refs == 0
&& cpu_of_arch (current_architecture) >= m68020
&& ! arch_coldfire_p (current_architecture))
|| opP->disp.size == SIZE_LONG)))
{
if (cpu_of_arch (current_architecture) < m68020
|| arch_coldfire_p (current_architecture))
opP->error =
_("displacement too large for this architecture; needs 68020 or higher");
if (opP->reg == PC)
tmpreg = 0x3B; /* 7.3 */
else
tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
if (isvar (&opP->disp))
{
if (opP->reg == PC)
{
if (opP->disp.size == SIZE_LONG
/* If the displacement needs pic
relocation it cannot be relaxed. */
|| opP->disp.pic_reloc != pic_none)
{
addword (0x0170);
add_fix ('l', &opP->disp, 1, 2);
}
else
{
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (PCREL1632, SZ_UNDEF));
break;
}
}
else
{
addword (0x0170);
add_fix ('l', &opP->disp, 0, 0);
}
}
else
addword (0x0170);
addword (nextword >> 16);
}
else
{
if (opP->reg == PC)
tmpreg = 0x3A; /* 7.2 */
else
tmpreg = 0x28 + opP->reg - ADDR; /* 5.areg */
if (isvar (&opP->disp))
{
if (opP->reg == PC)
{
add_fix ('w', &opP->disp, 1, 0);
}
else
add_fix ('w', &opP->disp, 0, 0);
}
}
addword (nextword);
break;
case POST:
case PRE:
case BASE:
nextword = 0;
baseo = get_num (&opP->disp, 90);
if (opP->mode == POST || opP->mode == PRE)
outro = get_num (&opP->odisp, 90);
/* Figure out the `addressing mode'.
Also turn on the BASE_DISABLE bit, if needed. */
if (opP->reg == PC || opP->reg == ZPC)
{
tmpreg = 0x3b; /* 7.3 */
if (opP->reg == ZPC)
nextword |= 0x80;
}
else if (opP->reg == 0)
{
nextword |= 0x80;
tmpreg = 0x30; /* 6.garbage */
}
else if (opP->reg >= ZADDR0 && opP->reg <= ZADDR7)
{
nextword |= 0x80;
tmpreg = 0x30 + opP->reg - ZADDR0;
}
else
tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
siz1 = opP->disp.size;
if (opP->mode == POST || opP->mode == PRE)
siz2 = opP->odisp.size;
else
siz2 = SIZE_UNSPEC;
/* Index register stuff. */
if (opP->index.reg != 0
&& opP->index.reg >= DATA
&& opP->index.reg <= ADDR7)
{
nextword |= (opP->index.reg - DATA) << 12;
if (opP->index.size == SIZE_LONG
|| (opP->index.size == SIZE_UNSPEC
&& m68k_index_width_default == SIZE_LONG))
nextword |= 0x800;
if ((opP->index.scale != 1
&& cpu_of_arch (current_architecture) < m68020)
|| (opP->index.scale == 8
&& (arch_coldfire_p (current_architecture)
&& !arch_coldfire_fpu (current_architecture))))
{
opP->error =
_("scale factor invalid on this architecture; needs cpu32 or 68020 or higher");
}
if (arch_coldfire_p (current_architecture)
&& opP->index.size == SIZE_WORD)
opP->error = _("invalid index size for coldfire");
switch (opP->index.scale)
{
case 1:
break;
case 2:
nextword |= 0x200;
break;
case 4:
nextword |= 0x400;
break;
case 8:
nextword |= 0x600;
break;
default:
abort ();
}
/* IF it's simple,
GET US OUT OF HERE! */
/* Must be INDEX, with an index register. Address
register cannot be ZERO-PC, and either :b was
forced, or we know it will fit. For a 68000 or
68010, force this mode anyways, because the
larger modes aren't supported. */
if (opP->mode == BASE
&& ((opP->reg >= ADDR0
&& opP->reg <= ADDR7)
|| opP->reg == PC))
{
if (siz1 == SIZE_BYTE
|| cpu_of_arch (current_architecture) < m68020
|| arch_coldfire_p (current_architecture)
|| (siz1 == SIZE_UNSPEC
&& ! isvar (&opP->disp)
&& issbyte (baseo)))
{
nextword += baseo & 0xff;
addword (nextword);
if (isvar (&opP->disp))
{
/* Do a byte relocation. If it doesn't
fit (possible on m68000) let the
fixup processing complain later. */
if (opP->reg == PC)
add_fix ('B', &opP->disp, 1, 1);
else
add_fix ('B', &opP->disp, 0, 0);
}
else if (siz1 != SIZE_BYTE)
{
if (siz1 != SIZE_UNSPEC)
as_warn (_("Forcing byte displacement"));
if (! issbyte (baseo))
opP->error = _("byte displacement out of range");
}
break;
}
else if (siz1 == SIZE_UNSPEC
&& opP->reg == PC
&& isvar (&opP->disp)
&& subs (&opP->disp) == NULL
/* If the displacement needs pic
relocation it cannot be relaxed. */
&& opP->disp.pic_reloc == pic_none)
{
/* The code in md_convert_frag_1 needs to be
able to adjust nextword. Call frag_grow
to ensure that we have enough space in
the frag obstack to make all the bytes
contiguous. */
frag_grow (14);
nextword += baseo & 0xff;
addword (nextword);
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (PCINDEX, SZ_UNDEF));
break;
}
}
}
else
{
nextword |= 0x40; /* No index reg. */
if (opP->index.reg >= ZDATA0
&& opP->index.reg <= ZDATA7)
nextword |= (opP->index.reg - ZDATA0) << 12;
else if (opP->index.reg >= ZADDR0
&& opP->index.reg <= ZADDR7)
nextword |= (opP->index.reg - ZADDR0 + 8) << 12;
}
/* It isn't simple. */
if (cpu_of_arch (current_architecture) < m68020
|| arch_coldfire_p (current_architecture))
opP->error =
_("invalid operand mode for this architecture; needs 68020 or higher");
nextword |= 0x100;
/* If the guy specified a width, we assume that it is
wide enough. Maybe it isn't. If so, we lose. */
switch (siz1)
{
case SIZE_UNSPEC:
if (isvar (&opP->disp)
? m68k_rel32
: ! issword (baseo))
{
siz1 = SIZE_LONG;
nextword |= 0x30;
}
else if (! isvar (&opP->disp) && baseo == 0)
nextword |= 0x10;
else
{
nextword |= 0x20;
siz1 = SIZE_WORD;
}
break;
case SIZE_BYTE:
as_warn (_(":b not permitted; defaulting to :w"));
/* Fall through. */
case SIZE_WORD:
nextword |= 0x20;
break;
case SIZE_LONG:
nextword |= 0x30;
break;
}
/* Figure out inner displacement stuff. */
if (opP->mode == POST || opP->mode == PRE)
{
if (cpu_of_arch (current_architecture) & cpu32)
opP->error = _("invalid operand mode for this architecture; needs 68020 or higher");
switch (siz2)
{
case SIZE_UNSPEC:
if (isvar (&opP->odisp)
? m68k_rel32
: ! issword (outro))
{
siz2 = SIZE_LONG;
nextword |= 0x3;
}
else if (! isvar (&opP->odisp) && outro == 0)
nextword |= 0x1;
else
{
nextword |= 0x2;
siz2 = SIZE_WORD;
}
break;
case 1:
as_warn (_(":b not permitted; defaulting to :w"));
/* Fall through. */
case 2:
nextword |= 0x2;
break;
case 3:
nextword |= 0x3;
break;
}
if (opP->mode == POST
&& (nextword & 0x40) == 0)
nextword |= 0x04;
}
addword (nextword);
if (siz1 != SIZE_UNSPEC && isvar (&opP->disp))
{
if (opP->reg == PC || opP->reg == ZPC)
add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 1, 2);
else
add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 0, 0);
}
if (siz1 == SIZE_LONG)
addword (baseo >> 16);
if (siz1 != SIZE_UNSPEC)
addword (baseo);
if (siz2 != SIZE_UNSPEC && isvar (&opP->odisp))
add_fix (siz2 == SIZE_LONG ? 'l' : 'w', &opP->odisp, 0, 0);
if (siz2 == SIZE_LONG)
addword (outro >> 16);
if (siz2 != SIZE_UNSPEC)
addword (outro);
break;
case ABSL:
nextword = get_num (&opP->disp, 90);
switch (opP->disp.size)
{
default:
abort ();
case SIZE_UNSPEC:
if (!isvar (&opP->disp) && issword (offs (&opP->disp)))
{
tmpreg = 0x38; /* 7.0 */
addword (nextword);
break;
}
if (isvar (&opP->disp)
&& !subs (&opP->disp)
&& adds (&opP->disp)
/* If the displacement needs pic relocation it
cannot be relaxed. */
&& opP->disp.pic_reloc == pic_none
&& !flag_long_jumps
&& !strchr ("~%&$?", s[0]))
{
tmpreg = 0x3A; /* 7.2 */
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (ABSTOPCREL, SZ_UNDEF));
break;
}
/* Fall through. */
case SIZE_LONG:
if (isvar (&opP->disp))
add_fix ('l', &opP->disp, 0, 0);
tmpreg = 0x39;/* 7.1 mode */
addword (nextword >> 16);
addword (nextword);
break;
case SIZE_BYTE:
as_bad (_("unsupported byte value; use a different suffix"));
/* Fall through. */
case SIZE_WORD:
if (isvar (&opP->disp))
add_fix ('w', &opP->disp, 0, 0);
tmpreg = 0x38;/* 7.0 mode */
addword (nextword);
break;
}
break;
case CONTROL:
case FPREG:
default:
as_bad (_("unknown/incorrect operand"));
/* abort (); */
}
/* If s[0] is '4', then this is for the mac instructions
that can have a trailing_ampersand set. If so, set 0x100
bit on tmpreg so install_gen_operand can check for it and
set the appropriate bit (word2, bit 5). */
if (s[0] == '4')
{
if (opP->trailing_ampersand)
tmpreg |= 0x100;
}
install_gen_operand (s[1], tmpreg);
break;
case '#':
case '^':
switch (s[1])
{ /* JF: I hate floating point! */
case 'j':
tmpreg = 70;
break;
case '8':
tmpreg = 20;
break;
case 'C':
tmpreg = 50;
break;
case '3':
default:
tmpreg = 90;
break;
}
tmpreg = get_num (&opP->disp, tmpreg);
if (isvar (&opP->disp))
add_fix (s[1], &opP->disp, 0, 0);
switch (s[1])
{
case 'b': /* Danger: These do no check for
certain types of overflow.
user beware! */
if (!isbyte (tmpreg))
opP->error = _("out of range");
insop (tmpreg, opcode);
if (isvar (&opP->disp))
the_ins.reloc[the_ins.nrel - 1].n =
(opcode->m_codenum) * 2 + 1;
break;
case 'B':
if (!issbyte (tmpreg))
opP->error = _("out of range");
the_ins.opcode[the_ins.numo - 1] |= tmpreg & 0xff;
if (isvar (&opP->disp))
the_ins.reloc[the_ins.nrel - 1].n = opcode->m_codenum * 2 - 1;
break;
case 'w':
if (!isword (tmpreg))
opP->error = _("out of range");
insop (tmpreg, opcode);
if (isvar (&opP->disp))
the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
break;
case 'W':
if (!issword (tmpreg))
opP->error = _("out of range");
insop (tmpreg, opcode);
if (isvar (&opP->disp))
the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
break;
case 'l':
/* Because of the way insop works, we put these two out
backwards. */
insop (tmpreg, opcode);
insop (tmpreg >> 16, opcode);
if (isvar (&opP->disp))
the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
break;
case '3':
tmpreg &= 0xFF;
/* Fall through. */
case '8':
case 'C':
case 'j':
install_operand (s[1], tmpreg);
break;
default:
abort ();
}
break;
case '+':
case '-':
case 'A':
case 'a':
install_operand (s[1], opP->reg - ADDR);
break;
case 'B':
tmpreg = get_num (&opP->disp, 90);
switch (s[1])
{
case 'B':
add_fix ('B', &opP->disp, 1, -1);
break;
case 'W':
add_fix ('w', &opP->disp, 1, 0);
addword (0);
break;
case 'L':
long_branch:
the_ins.opcode[0] |= 0xff;
add_fix ('l', &opP->disp, 1, 0);
addword (0);
addword (0);
break;
case 'g': /* Conditional branch */
have_disp = HAVE_LONG_CALL (current_architecture);
goto var_branch;
case 'b': /* Unconditional branch */
have_disp = HAVE_LONG_BRANCH (current_architecture);
use_pl = LONG_BRANCH_VIA_COND (current_architecture);
goto var_branch;
case 's': /* Unconditional subroutine */
have_disp = HAVE_LONG_CALL (current_architecture);
var_branch:
if (subs (&opP->disp) /* We can't relax it. */
/* If the displacement needs pic relocation it cannot be
relaxed. */
|| opP->disp.pic_reloc != pic_none)
{
if (!have_disp)
as_warn (_("Can't use long branches on this architecture"));
goto long_branch;
}
/* This could either be a symbol, or an absolute
address. If it's an absolute address, turn it into
an absolute jump right here and keep it out of the
relaxer. */
if (adds (&opP->disp) == 0)
{
if (the_ins.opcode[0] == 0x6000) /* jbra */
the_ins.opcode[0] = 0x4EF9;
else if (the_ins.opcode[0] == 0x6100) /* jbsr */
the_ins.opcode[0] = 0x4EB9;
else /* jCC */
{
the_ins.opcode[0] ^= 0x0100;
the_ins.opcode[0] |= 0x0006;
addword (0x4EF9);
}
add_fix ('l', &opP->disp, 0, 0);
addword (0);
addword (0);
break;
}
/* Now we know it's going into the relaxer. Now figure
out which mode. We try in this order of preference:
long branch, absolute jump, byte/word branches only. */
if (have_disp)
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (BRANCHBWL, SZ_UNDEF));
else if (! flag_keep_pcrel)
{
if ((the_ins.opcode[0] == 0x6000)
|| (the_ins.opcode[0] == 0x6100))
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (BRABSJUNC, SZ_UNDEF));
else
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (BRABSJCOND, SZ_UNDEF));
}
else
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
(use_pl ? TAB (BRANCHBWPL, SZ_UNDEF)
: TAB (BRANCHBW, SZ_UNDEF)));
break;
case 'w':
if (isvar (&opP->disp))
{
/* Check for DBcc instructions. We can relax them,
but only if we have long branches and/or absolute
jumps. */
if (((the_ins.opcode[0] & 0xf0f8) == 0x50c8)
&& (HAVE_LONG_BRANCH (current_architecture)
|| ! flag_keep_pcrel))
{
if (HAVE_LONG_BRANCH (current_architecture))
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (DBCCLBR, SZ_UNDEF));
else
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (DBCCABSJ, SZ_UNDEF));
break;
}
add_fix ('w', &opP->disp, 1, 0);
}
addword (0);
break;
case 'C': /* Fixed size LONG coproc branches. */
add_fix ('l', &opP->disp, 1, 0);
addword (0);
addword (0);
break;
case 'c': /* Var size Coprocesssor branches. */
if (subs (&opP->disp) || (adds (&opP->disp) == 0))
{
the_ins.opcode[the_ins.numo - 1] |= 0x40;
add_fix ('l', &opP->disp, 1, 0);
addword (0);
addword (0);
}
else
add_frag (adds (&opP->disp),
SEXT (offs (&opP->disp)),
TAB (FBRANCH, SZ_UNDEF));
break;
default:
abort ();
}
break;
case 'C': /* Ignore it. */
break;
case 'd': /* JF this is a kludge. */
install_operand ('s', opP->reg - ADDR);
tmpreg = get_num (&opP->disp, 90);
if (!issword (tmpreg))
{
as_warn (_("Expression out of range, using 0"));
tmpreg = 0;
}
addword (tmpreg);
break;
case 'D':
install_operand (s[1], opP->reg - DATA);
break;
case 'e': /* EMAC ACCx, reg/reg. */
install_operand (s[1], opP->reg - ACC);
break;
case 'E': /* Ignore it. */
break;
case 'F':
install_operand (s[1], opP->reg - FP0);
break;
case 'g': /* EMAC ACCEXTx. */
install_operand (s[1], opP->reg - ACCEXT01);
break;
case 'G': /* Ignore it. */
case 'H':
break;
case 'I':
tmpreg = opP->reg - COP0;
install_operand (s[1], tmpreg);
break;
case 'i': /* MAC/EMAC scale factor. */
install_operand (s[1], opP->mode == LSH ? 0x1 : 0x3);
break;
case 'J': /* JF foo. */
switch (opP->reg)
{
case SFC:
tmpreg = 0x000;
break;
case DFC:
tmpreg = 0x001;
break;
case CACR:
tmpreg = 0x002;
break;
case TC:
case ASID:
tmpreg = 0x003;
break;
case ACR0:
case ITT0:
tmpreg = 0x004;
break;
case ACR1:
case ITT1:
tmpreg = 0x005;
break;
case ACR2:
case DTT0:
tmpreg = 0x006;
break;
case ACR3:
case DTT1:
tmpreg = 0x007;
break;
case BUSCR:
case MMUBAR:
tmpreg = 0x008;
break;
case RGPIOBAR:
tmpreg = 0x009;
break;
case ACR4:
case ACR5:
case ACR6:
case ACR7:
tmpreg = 0x00c + (opP->reg - ACR4);
break;
case USP:
tmpreg = 0x800;
break;
case VBR:
tmpreg = 0x801;
break;
case CAAR:
case CPUCR:
tmpreg = 0x802;
break;
case MSP:
tmpreg = 0x803;
break;
case ISP:
tmpreg = 0x804;
break;
case MMUSR:
tmpreg = 0x805;
break;
case URP:
tmpreg = 0x806;
break;
case SRP:
tmpreg = 0x807;
break;
case PCR:
tmpreg = 0x808;
break;
case ROMBAR:
case ROMBAR0:
tmpreg = 0xC00;
break;
case ROMBAR1:
tmpreg = 0xC01;
break;
case FLASHBAR:
case RAMBAR0:
case RAMBAR_ALT:
tmpreg = 0xC04;
break;
case RAMBAR:
case RAMBAR1:
tmpreg = 0xC05;
break;
case MPCR:
tmpreg = 0xC0C;
break;
case EDRAMBAR:
tmpreg = 0xC0D;
break;
case MBAR0:
case MBAR2:
case SECMBAR:
tmpreg = 0xC0E;
break;
case MBAR1:
case MBAR:
tmpreg = 0xC0F;
break;
case PCR1U0:
tmpreg = 0xD02;
break;
case PCR1L0:
tmpreg = 0xD03;
break;
case PCR2U0:
tmpreg = 0xD04;
break;
case PCR2L0:
tmpreg = 0xD05;
break;
case PCR3U0:
tmpreg = 0xD06;
break;
case PCR3L0:
tmpreg = 0xD07;
break;
case PCR1L1:
tmpreg = 0xD0A;
break;
case PCR1U1:
tmpreg = 0xD0B;
break;
case PCR2L1:
tmpreg = 0xD0C;
break;
case PCR2U1:
tmpreg = 0xD0D;
break;
case PCR3L1:
tmpreg = 0xD0E;
break;
case PCR3U1:
tmpreg = 0xD0F;
break;
case CAC:
tmpreg = 0xFFE;
break;
case MBO:
tmpreg = 0xFFF;
break;
default:
abort ();
}
install_operand (s[1], tmpreg);
break;
case 'k':
tmpreg = get_num (&opP->disp, 55);
install_operand (s[1], tmpreg & 0x7f);
break;
case 'l':
tmpreg = opP->mask;
if (s[1] == 'w')
{
if (tmpreg & 0x7FF0000)
as_bad (_("Floating point register in register list"));
insop (reverse_16_bits (tmpreg), opcode);
}
else
{
if (tmpreg & 0x700FFFF)
as_bad (_("Wrong register in floating-point reglist"));
install_operand (s[1], reverse_8_bits (tmpreg >> 16));
}
break;
case 'L':
tmpreg = opP->mask;
if (s[1] == 'w')
{
if (tmpreg & 0x7FF0000)
as_bad (_("Floating point register in register list"));
insop (tmpreg, opcode);
}
else if (s[1] == '8')
{
if (tmpreg & 0x0FFFFFF)
as_bad (_("incorrect register in reglist"));
install_operand (s[1], tmpreg >> 24);
}
else
{
if (tmpreg & 0x700FFFF)
as_bad (_("wrong register in floating-point reglist"));
else
install_operand (s[1], tmpreg >> 16);
}
break;
case 'M':
install_operand (s[1], get_num (&opP->disp, 60));
break;
case 'O':
tmpreg = ((opP->mode == DREG)
? 0x20 + (int) (opP->reg - DATA)
: (get_num (&opP->disp, 40) & 0x1F));
install_operand (s[1], tmpreg);
break;
case 'Q':
tmpreg = get_num (&opP->disp, 10);
if (tmpreg == 8)
tmpreg = 0;
install_operand (s[1], tmpreg);
break;
case 'R':
/* This depends on the fact that ADDR registers are eight
more than their corresponding DATA regs, so the result
will have the ADDR_REG bit set. */
install_operand (s[1], opP->reg - DATA);
break;
case 'r':
if (opP->mode == AINDR)
install_operand (s[1], opP->reg - DATA);
else
install_operand (s[1], opP->index.reg - DATA);
break;
case 's':
if (opP->reg == FPI)
tmpreg = 0x1;
else if (opP->reg == FPS)
tmpreg = 0x2;
else if (opP->reg == FPC)
tmpreg = 0x4;
else
abort ();
install_operand (s[1], tmpreg);
break;
case 'S': /* Ignore it. */
break;
case 'T':
install_operand (s[1], get_num (&opP->disp, 30));
break;
case 'U': /* Ignore it. */
break;
case 'c':
switch (opP->reg)
{
case NC:
tmpreg = 0;
break;
case DC:
tmpreg = 1;
break;
case IC:
tmpreg = 2;
break;
case BC:
tmpreg = 3;
break;
default:
as_fatal (_("failed sanity check"));
} /* switch on cache token. */
install_operand (s[1], tmpreg);
break;
#ifndef NO_68851
/* JF: These are out of order, I fear. */
case 'f':
switch (opP->reg)
{
case SFC:
tmpreg = 0;
break;
case DFC:
tmpreg = 1;
break;
default:
abort ();
}
install_operand (s[1], tmpreg);
break;
case '0':
case '1':
case '2':
switch (opP->reg)
{
case TC:
tmpreg = 0;
break;
case CAL:
tmpreg = 4;
break;
case VAL:
tmpreg = 5;
break;
case SCC:
tmpreg = 6;
break;
case AC:
tmpreg = 7;
break;
default:
abort ();
}
install_operand (s[1], tmpreg);
break;
case 'V':
if (opP->reg == VAL)
break;
abort ();
case 'W':
switch (opP->reg)
{
case DRP:
tmpreg = 1;
break;
case SRP:
tmpreg = 2;
break;
case CRP:
tmpreg = 3;
break;
default:
abort ();
}
install_operand (s[1], tmpreg);
break;
case 'X':
switch (opP->reg)
{
case BAD:
case BAD + 1:
case BAD + 2:
case BAD + 3:
case BAD + 4:
case BAD + 5:
case BAD + 6:
case BAD + 7:
tmpreg = (4 << 10) | ((opP->reg - BAD) << 2);
break;
case BAC:
case BAC + 1:
case BAC + 2:
case BAC + 3:
case BAC + 4:
case BAC + 5:
case BAC + 6:
case BAC + 7:
tmpreg = (5 << 10) | ((opP->reg - BAC) << 2);
break;
default:
abort ();
}
install_operand (s[1], tmpreg);
break;
case 'Y':
know (opP->reg == PSR);
break;
case 'Z':
know (opP->reg == PCSR);
break;
#endif /* m68851 */
case '3':
switch (opP->reg)
{
case TT0:
tmpreg = 2;
break;
case TT1:
tmpreg = 3;
break;
default:
abort ();
}
install_operand (s[1], tmpreg);
break;
case 't':
tmpreg = get_num (&opP->disp, 20);
install_operand (s[1], tmpreg);
break;
case '_': /* used only for move16 absolute 32-bit address. */
if (isvar (&opP->disp))
add_fix ('l', &opP->disp, 0, 0);
tmpreg = get_num (&opP->disp, 90);
addword (tmpreg >> 16);
addword (tmpreg & 0xFFFF);
break;
case 'u':
install_operand (s[1], opP->reg - DATA0L);
opP->reg -= (DATA0L);
opP->reg &= 0x0F; /* remove upper/lower bit. */
break;
case 'x':
tmpreg = get_num (&opP->disp, 80);
if (tmpreg == -1)
tmpreg = 0;
install_operand (s[1], tmpreg);
break;
case 'j':
tmpreg = get_num (&opP->disp, 10);
install_operand (s[1], tmpreg - 1);
break;
case 'K':
tmpreg = get_num (&opP->disp, 65);
install_operand (s[1], tmpreg);
break;
default:
abort ();
}
}
/* By the time when get here (FINALLY) the_ins contains the complete
instruction, ready to be emitted. . . */
}
static int
reverse_16_bits (int in)
{
int out = 0;
int n;
static int mask[16] =
{
0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000, 0x8000
};
for (n = 0; n < 16; n++)
{
if (in & mask[n])
out |= mask[15 - n];
}
return out;
} /* reverse_16_bits() */
static int
reverse_8_bits (int in)
{
int out = 0;
int n;
static int mask[8] =
{
0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
};
for (n = 0; n < 8; n++)
{
if (in & mask[n])
out |= mask[7 - n];
}
return out;
} /* reverse_8_bits() */
/* Cause an extra frag to be generated here, inserting up to
FRAG_VAR_SIZE bytes. TYPE is the subtype of the frag to be
generated; its primary type is rs_machine_dependent.
The TYPE parameter is also used by md_convert_frag_1 and
md_estimate_size_before_relax. The appropriate type of fixup will
be emitted by md_convert_frag_1.
ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
static void
install_operand (int mode, int val)
{
switch (mode)
{
case 's':
the_ins.opcode[0] |= val & 0xFF; /* JF FF is for M kludge. */
break;
case 'd':
the_ins.opcode[0] |= val << 9;
break;
case 'E':
the_ins.opcode[1] |= val << 9;
break;
case '1':
the_ins.opcode[1] |= val << 12;
break;
case '2':
the_ins.opcode[1] |= val << 6;
break;
case '3':
the_ins.opcode[1] |= val;
break;
case '4':
the_ins.opcode[2] |= val << 12;
break;
case '5':
the_ins.opcode[2] |= val << 6;
break;
case '6':
/* DANGER! This is a hack to force cas2l and cas2w cmds to be
three words long! */
the_ins.numo++;
the_ins.opcode[2] |= val;
break;
case '7':
the_ins.opcode[1] |= val << 7;
break;
case '8':
the_ins.opcode[1] |= val << 10;
break;
#ifndef NO_68851
case '9':
the_ins.opcode[1] |= val << 5;
break;
#endif
case 't':
the_ins.opcode[1] |= (val << 10) | (val << 7);
break;
case 'D':
the_ins.opcode[1] |= (val << 12) | val;
break;
case 'g':
the_ins.opcode[0] |= val = 0xff;
break;
case 'i':
the_ins.opcode[0] |= val << 9;
break;
case 'C':
the_ins.opcode[1] |= val;
break;
case 'j':
the_ins.opcode[1] |= val;
the_ins.numo++; /* What a hack. */
break;
case 'k':
the_ins.opcode[1] |= val << 4;
break;
case 'b':
case 'w':
case 'W':
case 'l':
break;
case 'e':
the_ins.opcode[0] |= (val << 6);
break;
case 'L':
the_ins.opcode[1] = (val >> 16);
the_ins.opcode[2] = val & 0xffff;
break;
case 'm':
the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
the_ins.opcode[0] |= ((val & 0x7) << 9);
the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
break;
case 'n': /* MAC/EMAC Rx on !load. */
the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
the_ins.opcode[0] |= ((val & 0x7) << 9);
the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
break;
case 'o': /* MAC/EMAC Rx on load. */
the_ins.opcode[1] |= val << 12;
the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
break;
case 'M': /* MAC/EMAC Ry on !load. */
the_ins.opcode[0] |= (val & 0xF);
the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
break;
case 'N': /* MAC/EMAC Ry on load. */
the_ins.opcode[1] |= (val & 0xF);
the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
break;
case 'h':
the_ins.opcode[1] |= ((val != 1) << 10);
break;
case 'F':
the_ins.opcode[0] |= ((val & 0x3) << 9);
break;
case 'f':
the_ins.opcode[0] |= ((val & 0x3) << 0);
break;
case 'G': /* EMAC accumulator in a EMAC load instruction. */
the_ins.opcode[0] |= ((~val & 0x1) << 7);
the_ins.opcode[1] |= ((val & 0x2) << (4 - 1));
break;
case 'H': /* EMAC accumulator in a EMAC non-load instruction. */
the_ins.opcode[0] |= ((val & 0x1) << 7);
the_ins.opcode[1] |= ((val & 0x2) << (4 - 1));
break;
case 'I':
the_ins.opcode[1] |= ((val & 0x3) << 9);
break;
case ']':
the_ins.opcode[0] |= (val & 0x1) <<10;
break;
case 'c':
default:
as_fatal (_("failed sanity check."));
}
}
static void
install_gen_operand (int mode, int val)
{
switch (mode)
{
case '/': /* Special for mask loads for mac/msac insns with
possible mask; trailing_ampersand set in bit 8. */
the_ins.opcode[0] |= (val & 0x3f);
the_ins.opcode[1] |= (((val & 0x100) >> 8) << 5);
break;
case 's':
the_ins.opcode[0] |= val;
break;
case 'd':
/* This is a kludge!!! */
the_ins.opcode[0] |= (val & 0x07) << 9 | (val & 0x38) << 3;
break;
case 'b':
case 'w':
case 'l':
case 'f':
case 'F':
case 'x':
case 'p':
the_ins.opcode[0] |= val;
break;
/* more stuff goes here. */
default:
as_fatal (_("failed sanity check."));
}
}
/* Verify that we have some number of paren pairs, do m68k_ip_op(), and
then deal with the bitfield hack. */
static char *
crack_operand (char *str, struct m68k_op *opP)
{
int parens;
int c;
char *beg_str;
int inquote = 0;
if (!str)
{
return str;
}
beg_str = str;
for (parens = 0; *str && (parens > 0 || inquote || notend (str)); str++)
{
if (! inquote)
{
if (*str == '(')
parens++;
else if (*str == ')')
{
if (!parens)
{ /* ERROR. */
opP->error = _("Extra )");
return str;
}
--parens;
}
}
if (flag_mri && *str == '\'')
inquote = ! inquote;
}
if (!*str && parens)
{ /* ERROR. */
opP->error = _("Missing )");
return str;
}
c = *str;
*str = '\0';
if (m68k_ip_op (beg_str, opP) != 0)
{
*str = c;
return str;
}
*str = c;
if (c == '}')
c = *++str; /* JF bitfield hack. */
if (c)
{
c = *++str;
if (!c)
as_bad (_("Missing operand"));
}
/* Detect MRI REG symbols and convert them to REGLSTs. */
if (opP->mode == CONTROL && (int)opP->reg < 0)
{
opP->mode = REGLST;
opP->mask = ~(int)opP->reg;
opP->reg = 0;
}
return str;
}
/* This is the guts of the machine-dependent assembler. STR points to a
machine dependent instruction. This function is supposed to emit
the frags/bytes it assembles to.
*/
static void
insert_reg (const char *regname, int regnum)
{
char buf[100];
int i;
#ifdef REGISTER_PREFIX
if (!flag_reg_prefix_optional)
{
buf[0] = REGISTER_PREFIX;
strcpy (buf + 1, regname);
regname = buf;
}
#endif
symbol_table_insert (symbol_new (regname, reg_section, regnum,
&zero_address_frag));
for (i = 0; regname[i]; i++)
buf[i] = TOUPPER (regname[i]);
buf[i] = '\0';
symbol_table_insert (symbol_new (buf, reg_section, regnum,
&zero_address_frag));
}
struct init_entry
{
const char *name;
int number;
};
static const struct init_entry init_table[] =
{
{ "d0", DATA0 },
{ "d1", DATA1 },
{ "d2", DATA2 },
{ "d3", DATA3 },
{ "d4", DATA4 },
{ "d5", DATA5 },
{ "d6", DATA6 },
{ "d7", DATA7 },
{ "a0", ADDR0 },
{ "a1", ADDR1 },
{ "a2", ADDR2 },
{ "a3", ADDR3 },
{ "a4", ADDR4 },
{ "a5", ADDR5 },
{ "a6", ADDR6 },
{ "fp", ADDR6 },
{ "a7", ADDR7 },
{ "sp", ADDR7 },
{ "ssp", ADDR7 },
{ "fp0", FP0 },
{ "fp1", FP1 },
{ "fp2", FP2 },
{ "fp3", FP3 },
{ "fp4", FP4 },
{ "fp5", FP5 },
{ "fp6", FP6 },
{ "fp7", FP7 },
{ "fpi", FPI },
{ "fpiar", FPI },
{ "fpc", FPI },
{ "fps", FPS },
{ "fpsr", FPS },
{ "fpc", FPC },
{ "fpcr", FPC },
{ "control", FPC },
{ "status", FPS },
{ "iaddr", FPI },
{ "cop0", COP0 },
{ "cop1", COP1 },
{ "cop2", COP2 },
{ "cop3", COP3 },
{ "cop4", COP4 },
{ "cop5", COP5 },
{ "cop6", COP6 },
{ "cop7", COP7 },
{ "pc", PC },
{ "zpc", ZPC },
{ "sr", SR },
{ "ccr", CCR },
{ "cc", CCR },
{ "acc", ACC },
{ "acc0", ACC },
{ "acc1", ACC1 },
{ "acc2", ACC2 },
{ "acc3", ACC3 },
{ "accext01", ACCEXT01 },
{ "accext23", ACCEXT23 },
{ "macsr", MACSR },
{ "mask", MASK },
/* Control registers. */
{ "sfc", SFC }, /* Source Function Code. */
{ "sfcr", SFC },
{ "dfc", DFC }, /* Destination Function Code. */
{ "dfcr", DFC },
{ "cacr", CACR }, /* Cache Control Register. */
{ "caar", CAAR }, /* Cache Address Register. */
{ "cpucr", CPUCR }, /* CPU Control Register. */
{ "usp", USP }, /* User Stack Pointer. */
{ "vbr", VBR }, /* Vector Base Register. */
{ "msp", MSP }, /* Master Stack Pointer. */
{ "isp", ISP }, /* Interrupt Stack Pointer. */
{ "itt0", ITT0 }, /* Instruction Transparent Translation Reg 0. */
{ "itt1", ITT1 }, /* Instruction Transparent Translation Reg 1. */
{ "dtt0", DTT0 }, /* Data Transparent Translation Register 0. */
{ "dtt1", DTT1 }, /* Data Transparent Translation Register 1. */
/* 68ec040 versions of same */
{ "iacr0", ITT0 }, /* Instruction Access Control Register 0. */
{ "iacr1", ITT1 }, /* Instruction Access Control Register 0. */
{ "dacr0", DTT0 }, /* Data Access Control Register 0. */
{ "dacr1", DTT1 }, /* Data Access Control Register 0. */
/* Coldfire versions of same. The ColdFire programmer's reference
manual indicated that the order is 2,3,0,1, but Ken Rose
<rose@netcom.com> says that 0,1,2,3 is the correct order. */
{ "acr0", ACR0 }, /* Access Control Unit 0. */
{ "acr1", ACR1 }, /* Access Control Unit 1. */
{ "acr2", ACR2 }, /* Access Control Unit 2. */
{ "acr3", ACR3 }, /* Access Control Unit 3. */
{ "acr4", ACR4 }, /* Access Control Unit 4. */
{ "acr5", ACR5 }, /* Access Control Unit 5. */
{ "acr6", ACR6 }, /* Access Control Unit 6. */
{ "acr7", ACR7 }, /* Access Control Unit 7. */
{ "tc", TC }, /* MMU Translation Control Register. */
{ "tcr", TC },
{ "asid", ASID },
{ "mmusr", MMUSR }, /* MMU Status Register. */
{ "srp", SRP }, /* User Root Pointer. */
{ "urp", URP }, /* Supervisor Root Pointer. */
{ "buscr", BUSCR },
{ "mmubar", MMUBAR },
{ "pcr", PCR },
{ "rombar", ROMBAR }, /* ROM Base Address Register. */
{ "rambar0", RAMBAR0 }, /* ROM Base Address Register. */
{ "rambar1", RAMBAR1 }, /* ROM Base Address Register. */
{ "mbar", MBAR }, /* Module Base Address Register. */
{ "mbar0", MBAR0 }, /* mcfv4e registers. */
{ "mbar1", MBAR1 }, /* mcfv4e registers. */
{ "rombar0", ROMBAR0 }, /* mcfv4e registers. */
{ "rombar1", ROMBAR1 }, /* mcfv4e registers. */
{ "mpcr", MPCR }, /* mcfv4e registers. */
{ "edrambar", EDRAMBAR }, /* mcfv4e registers. */
{ "secmbar", SECMBAR }, /* mcfv4e registers. */
{ "asid", TC }, /* mcfv4e registers. */
{ "mmubar", BUSCR }, /* mcfv4e registers. */
{ "pcr1u0", PCR1U0 }, /* mcfv4e registers. */
{ "pcr1l0", PCR1L0 }, /* mcfv4e registers. */
{ "pcr2u0", PCR2U0 }, /* mcfv4e registers. */
{ "pcr2l0", PCR2L0 }, /* mcfv4e registers. */
{ "pcr3u0", PCR3U0 }, /* mcfv4e registers. */
{ "pcr3l0", PCR3L0 }, /* mcfv4e registers. */
{ "pcr1u1", PCR1U1 }, /* mcfv4e registers. */
{ "pcr1l1", PCR1L1 }, /* mcfv4e registers. */
{ "pcr2u1", PCR2U1 }, /* mcfv4e registers. */
{ "pcr2l1", PCR2L1 }, /* mcfv4e registers. */
{ "pcr3u1", PCR3U1 }, /* mcfv4e registers. */
{ "pcr3l1", PCR3L1 }, /* mcfv4e registers. */
{ "flashbar", FLASHBAR }, /* mcf528x registers. */
{ "rambar", RAMBAR }, /* mcf528x registers. */
{ "mbar2", MBAR2 }, /* mcf5249 registers. */
{ "rgpiobar", RGPIOBAR }, /* mcf54418 registers. */
{ "cac", CAC }, /* fido registers. */
{ "mbb", MBO }, /* fido registers (obsolete). */
{ "mbo", MBO }, /* fido registers. */
/* End of control registers. */
{ "ac", AC },
{ "bc", BC },
{ "cal", CAL },
{ "crp", CRP },
{ "drp", DRP },
{ "pcsr", PCSR },
{ "psr", PSR },
{ "scc", SCC },
{ "val", VAL },
{ "bad0", BAD0 },
{ "bad1", BAD1 },
{ "bad2", BAD2 },
{ "bad3", BAD3 },
{ "bad4", BAD4 },
{ "bad5", BAD5 },
{ "bad6", BAD6 },
{ "bad7", BAD7 },
{ "bac0", BAC0 },
{ "bac1", BAC1 },
{ "bac2", BAC2 },
{ "bac3", BAC3 },
{ "bac4", BAC4 },
{ "bac5", BAC5 },
{ "bac6", BAC6 },
{ "bac7", BAC7 },
{ "ic", IC },
{ "dc", DC },
{ "nc", NC },
{ "tt0", TT0 },
{ "tt1", TT1 },
/* 68ec030 versions of same. */
{ "ac0", TT0 },
{ "ac1", TT1 },
/* 68ec030 access control unit, identical to 030 MMU status reg. */
{ "acusr", PSR },
/* Suppressed data and address registers. */
{ "zd0", ZDATA0 },
{ "zd1", ZDATA1 },
{ "zd2", ZDATA2 },
{ "zd3", ZDATA3 },
{ "zd4", ZDATA4 },
{ "zd5", ZDATA5 },
{ "zd6", ZDATA6 },
{ "zd7", ZDATA7 },
{ "za0", ZADDR0 },
{ "za1", ZADDR1 },
{ "za2", ZADDR2 },
{ "za3", ZADDR3 },
{ "za4", ZADDR4 },
{ "za5", ZADDR5 },
{ "za6", ZADDR6 },
{ "za7", ZADDR7 },
/* Upper and lower data and address registers, used by macw and msacw. */
{ "d0l", DATA0L },
{ "d1l", DATA1L },
{ "d2l", DATA2L },
{ "d3l", DATA3L },
{ "d4l", DATA4L },
{ "d5l", DATA5L },
{ "d6l", DATA6L },
{ "d7l", DATA7L },
{ "a0l", ADDR0L },
{ "a1l", ADDR1L },
{ "a2l", ADDR2L },
{ "a3l", ADDR3L },
{ "a4l", ADDR4L },
{ "a5l", ADDR5L },
{ "a6l", ADDR6L },
{ "a7l", ADDR7L },
{ "d0u", DATA0U },
{ "d1u", DATA1U },
{ "d2u", DATA2U },
{ "d3u", DATA3U },
{ "d4u", DATA4U },
{ "d5u", DATA5U },
{ "d6u", DATA6U },
{ "d7u", DATA7U },
{ "a0u", ADDR0U },
{ "a1u", ADDR1U },
{ "a2u", ADDR2U },
{ "a3u", ADDR3U },
{ "a4u", ADDR4U },
{ "a5u", ADDR5U },
{ "a6u", ADDR6U },
{ "a7u", ADDR7U },
{ 0, 0 }
};
static void
init_regtable (void)
{
int i;
for (i = 0; init_table[i].name; i++)
insert_reg (init_table[i].name, init_table[i].number);
}
void
md_assemble (char *str)
{
const char *er;
short *fromP;
char *toP = NULL;
int m, n = 0;
char *to_beg_P;
int shorts_this_frag;
fixS *fixP;
if (!selected_cpu && !selected_arch)
{
/* We've not selected an architecture yet. Set the default
now. We do this lazily so that an initial .cpu or .arch directive
can specify. */
if (!m68k_set_cpu (TARGET_CPU, 1, 1))
as_bad (_("unrecognized default cpu `%s'"), TARGET_CPU);
}
if (!initialized)
m68k_init_arch ();
/* In MRI mode, the instruction and operands are separated by a
space. Anything following the operands is a comment. The label
has already been removed. */
if (flag_mri)
{
char *s;
int fields = 0;
int infield = 0;
int inquote = 0;
for (s = str; *s != '\0'; s++)
{
if ((*s == ' ' || *s == '\t') && ! inquote)
{
if (infield)
{
++fields;
if (fields >= 2)
{
*s = '\0';
break;
}
infield = 0;
}
}
else
{
if (! infield)
infield = 1;
if (*s == '\'')
inquote = ! inquote;
}
}
}
memset (&the_ins, '\0', sizeof (the_ins));
m68k_ip (str);
er = the_ins.error;
if (!er)
{
for (n = 0; n < the_ins.numargs; n++)
if (the_ins.operands[n].error)
{
er = the_ins.operands[n].error;
break;
}
}
if (er)
{
as_bad (_("%s -- statement `%s' ignored"), er, str);
return;
}
/* If there is a current label, record that it marks an instruction. */
if (current_label != NULL)
{
current_label->text = 1;
current_label = NULL;
}
/* Tie dwarf2 debug info to the address at the start of the insn. */
dwarf2_emit_insn (0);
if (the_ins.nfrag == 0)
{
/* No frag hacking involved; just put it out. */
toP = frag_more (2 * the_ins.numo);
fromP = &the_ins.opcode[0];
for (m = the_ins.numo; m; --m)
{
md_number_to_chars (toP, (long) (*fromP), 2);
toP += 2;
fromP++;
}
/* Put out symbol-dependent info. */
for (m = 0; m < the_ins.nrel; m++)
{
switch (the_ins.reloc[m].wid)
{
case 'B':
n = 1;
break;
case 'b':
n = 1;
break;
case '3':
n = 1;
break;
case 'w':
case 'W':
n = 2;
break;
case 'l':
n = 4;
break;
default:
as_fatal (_("Don't know how to figure out width of %c in md_assemble()"),
the_ins.reloc[m].wid);
}
fixP = fix_new_exp (frag_now,
((toP - frag_now->fr_literal)
- the_ins.numo * 2 + the_ins.reloc[m].n),
n,
&the_ins.reloc[m].exp,
the_ins.reloc[m].pcrel,
get_reloc_code (n, the_ins.reloc[m].pcrel,
the_ins.reloc[m].pic_reloc));
fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
if (the_ins.reloc[m].wid == 'B')
fixP->fx_signed = 1;
}
return;
}
/* There's some frag hacking. */
{
/* Calculate the max frag size. */
int wid;
wid = 2 * the_ins.fragb[0].fragoff;
for (n = 1; n < the_ins.nfrag; n++)
wid += 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
/* frag_var part. */
wid += FRAG_VAR_SIZE;
/* Make sure the whole insn fits in one chunk, in particular that
the var part is attached, as we access one byte before the
variable frag for byte branches. */
frag_grow (wid);
}
for (n = 0, fromP = &the_ins.opcode[0]; n < the_ins.nfrag; n++)
{
int wid;
if (n == 0)
wid = 2 * the_ins.fragb[n].fragoff;
else
wid = 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
toP = frag_more (wid);
to_beg_P = toP;
shorts_this_frag = 0;
for (m = wid / 2; m; --m)
{
md_number_to_chars (toP, (long) (*fromP), 2);
toP += 2;
fromP++;
shorts_this_frag++;
}
for (m = 0; m < the_ins.nrel; m++)
{
if ((the_ins.reloc[m].n) >= 2 * shorts_this_frag)
{
the_ins.reloc[m].n -= 2 * shorts_this_frag;
break;
}
wid = the_ins.reloc[m].wid;
if (wid == 0)
continue;
the_ins.reloc[m].wid = 0;
wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
fixP = fix_new_exp (frag_now,
((toP - frag_now->fr_literal)
- the_ins.numo * 2 + the_ins.reloc[m].n),
wid,
&the_ins.reloc[m].exp,
the_ins.reloc[m].pcrel,
get_reloc_code (wid, the_ins.reloc[m].pcrel,
the_ins.reloc[m].pic_reloc));
fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
}
(void) frag_var (rs_machine_dependent, FRAG_VAR_SIZE, 0,
(relax_substateT) (the_ins.fragb[n].fragty),
the_ins.fragb[n].fadd, the_ins.fragb[n].foff, to_beg_P);
}
gas_assert (the_ins.nfrag >= 1);
n = the_ins.numo - the_ins.fragb[the_ins.nfrag - 1].fragoff;
shorts_this_frag = 0;
if (n)
{
toP = frag_more (n * 2);
while (n--)
{
md_number_to_chars (toP, (long) (*fromP), 2);
toP += 2;
fromP++;
shorts_this_frag++;
}
}
for (m = 0; m < the_ins.nrel; m++)
{
int wid;
wid = the_ins.reloc[m].wid;
if (wid == 0)
continue;
the_ins.reloc[m].wid = 0;
wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
fixP = fix_new_exp (frag_now,
((the_ins.reloc[m].n + toP - frag_now->fr_literal)
- shorts_this_frag * 2),
wid,
&the_ins.reloc[m].exp,
the_ins.reloc[m].pcrel,
get_reloc_code (wid, the_ins.reloc[m].pcrel,
the_ins.reloc[m].pic_reloc));
fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
}
}
/* Comparison function used by qsort to rank the opcode entries by name. */
static int
m68k_compare_opcode (const void * v1, const void * v2)
{
struct m68k_opcode * op1, * op2;
int ret;
if (v1 == v2)
return 0;
op1 = *(struct m68k_opcode **) v1;
op2 = *(struct m68k_opcode **) v2;
/* Compare the two names. If different, return the comparison.
If the same, return the order they are in the opcode table. */
ret = strcmp (op1->name, op2->name);
if (ret)
return ret;
if (op1 < op2)
return -1;
return 1;
}
void
md_begin (void)
{
const struct m68k_opcode *ins;
struct m68k_incant *hack, *slak;
const char *retval = 0; /* Empty string, or error msg text. */
int i;
/* Set up hash tables with 68000 instructions.
similar to what the vax assembler does. */
/* RMS claims the thing to do is take the m68k-opcode.h table, and make
a copy of it at runtime, adding in the information we want but isn't
there. I think it'd be better to have an awk script hack the table
at compile time. Or even just xstr the table and use it as-is. But
my lord ghod hath spoken, so we do it this way. Excuse the ugly var
names. */
if (flag_mri)
{
flag_reg_prefix_optional = 1;
m68k_abspcadd = 1;
if (! m68k_rel32_from_cmdline)
m68k_rel32 = 0;
}
/* First sort the opcode table into alphabetical order to separate
the order that the assembler wants to see the opcodes from the
order that the disassembler wants to see them. */
m68k_sorted_opcodes = XNEWVEC (const struct m68k_opcode *, m68k_numopcodes);
for (i = m68k_numopcodes; i--;)
m68k_sorted_opcodes[i] = m68k_opcodes + i;
qsort (m68k_sorted_opcodes, m68k_numopcodes,
sizeof (m68k_sorted_opcodes[0]), m68k_compare_opcode);
op_hash = hash_new ();
obstack_begin (&robyn, 4000);
for (i = 0; i < m68k_numopcodes; i++)
{
hack = slak = XOBNEW (&robyn, struct m68k_incant);
do
{
ins = m68k_sorted_opcodes[i];
/* We must enter all insns into the table, because .arch and
.cpu directives can change things. */
slak->m_operands = ins->args;
slak->m_arch = ins->arch;
slak->m_opcode = ins->opcode;
/* In most cases we can determine the number of opcode words
by checking the second word of the mask. Unfortunately
some instructions have 2 opcode words, but no fixed bits
in the second word. A leading dot in the operands
string also indicates 2 opcodes. */
if (*slak->m_operands == '.')
{
slak->m_operands++;
slak->m_codenum = 2;
}
else if (ins->match & 0xffffL)
slak->m_codenum = 2;
else
slak->m_codenum = 1;
slak->m_opnum = strlen (slak->m_operands) / 2;
if (i + 1 != m68k_numopcodes
&& !strcmp (ins->name, m68k_sorted_opcodes[i + 1]->name))
{
slak->m_next = XOBNEW (&robyn, struct m68k_incant);
i++;
}
else
slak->m_next = 0;
slak = slak->m_next;
}
while (slak);
retval = hash_insert (op_hash, ins->name, (char *) hack);
if (retval)
as_fatal (_("Internal Error: Can't hash %s: %s"), ins->name, retval);
}
for (i = 0; i < m68k_numaliases; i++)
{
const char *name = m68k_opcode_aliases[i].primary;
const char *alias = m68k_opcode_aliases[i].alias;
void *val = hash_find (op_hash, name);
if (!val)
as_fatal (_("Internal Error: Can't find %s in hash table"), name);
retval = hash_insert (op_hash, alias, val);
if (retval)
as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
}
/* In MRI mode, all unsized branches are variable sized. Normally,
they are word sized. */
if (flag_mri)
{
static struct m68k_opcode_alias mri_aliases[] =
{
{ "bhi", "jhi", },
{ "bls", "jls", },
{ "bcc", "jcc", },
{ "bcs", "jcs", },
{ "bne", "jne", },
{ "beq", "jeq", },
{ "bvc", "jvc", },
{ "bvs", "jvs", },
{ "bpl", "jpl", },
{ "bmi", "jmi", },
{ "bge", "jge", },
{ "blt", "jlt", },
{ "bgt", "jgt", },
{ "ble", "jle", },
{ "bra", "jra", },
{ "bsr", "jbsr", },
};
for (i = 0;
i < (int) (sizeof mri_aliases / sizeof mri_aliases[0]);
i++)
{
const char *name = mri_aliases[i].primary;
const char *alias = mri_aliases[i].alias;
void *val = hash_find (op_hash, name);
if (!val)
as_fatal (_("Internal Error: Can't find %s in hash table"), name);
retval = hash_jam (op_hash, alias, val);
if (retval)
as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
}
}
for (i = 0; i < (int) sizeof (notend_table); i++)
{
notend_table[i] = 0;
alt_notend_table[i] = 0;
}
notend_table[','] = 1;
notend_table['{'] = 1;
notend_table['}'] = 1;
alt_notend_table['a'] = 1;
alt_notend_table['A'] = 1;
alt_notend_table['d'] = 1;
alt_notend_table['D'] = 1;
alt_notend_table['#'] = 1;
alt_notend_table['&'] = 1;
alt_notend_table['f'] = 1;
alt_notend_table['F'] = 1;
#ifdef REGISTER_PREFIX
alt_notend_table[REGISTER_PREFIX] = 1;
#endif
/* We need to put '(' in alt_notend_table to handle
cas2 %d0:%d2,%d3:%d4,(%a0):(%a1) */
alt_notend_table['('] = 1;
/* We need to put '@' in alt_notend_table to handle
cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1) */
alt_notend_table['@'] = 1;
/* We need to put digits in alt_notend_table to handle
bfextu %d0{24:1},%d0 */
alt_notend_table['0'] = 1;
alt_notend_table['1'] = 1;
alt_notend_table['2'] = 1;
alt_notend_table['3'] = 1;
alt_notend_table['4'] = 1;
alt_notend_table['5'] = 1;
alt_notend_table['6'] = 1;
alt_notend_table['7'] = 1;
alt_notend_table['8'] = 1;
alt_notend_table['9'] = 1;
#ifndef MIT_SYNTAX_ONLY
/* Insert pseudo ops, these have to go into the opcode table since
gas expects pseudo ops to start with a dot. */
{
int n = 0;
while (mote_pseudo_table[n].poc_name)
{
hack = XOBNEW (&robyn, struct m68k_incant);
hash_insert (op_hash,
mote_pseudo_table[n].poc_name, (char *) hack);
hack->m_operands = 0;
hack->m_opnum = n;
n++;
}
}
#endif
init_regtable ();
record_alignment (text_section, 2);
record_alignment (data_section, 2);
record_alignment (bss_section, 2);
}
/* This is called when a label is defined. */
void
m68k_frob_label (symbolS *sym)
{
struct label_line *n;
n = XNEW (struct label_line);
n->next = labels;
n->label = sym;
n->file = as_where (&n->line);
n->text = 0;
labels = n;
current_label = n;
dwarf2_emit_label (sym);
}
/* This is called when a value that is not an instruction is emitted. */
void
m68k_flush_pending_output (void)
{
current_label = NULL;
}
/* This is called at the end of the assembly, when the final value of
the label is known. We warn if this is a text symbol aligned at an
odd location. */
void
m68k_frob_symbol (symbolS *sym)
{
if (S_GET_SEGMENT (sym) == reg_section
&& (int) S_GET_VALUE (sym) < 0)
{
S_SET_SEGMENT (sym, absolute_section);
S_SET_VALUE (sym, ~(int)S_GET_VALUE (sym));
}
else if ((S_GET_VALUE (sym) & 1) != 0)
{
struct label_line *l;
for (l = labels; l != NULL; l = l->next)
{
if (l->label == sym)
{
if (l->text)
as_warn_where (l->file, l->line,
_("text label `%s' aligned to odd boundary"),
S_GET_NAME (sym));
break;
}
}
}
}
/* This is called if we go in or out of MRI mode because of the .mri
pseudo-op. */
void
m68k_mri_mode_change (int on)
{
if (on)
{
if (! flag_reg_prefix_optional)
{
flag_reg_prefix_optional = 1;
#ifdef REGISTER_PREFIX
init_regtable ();
#endif
}
m68k_abspcadd = 1;
if (! m68k_rel32_from_cmdline)
m68k_rel32 = 0;
}
else
{
if (! reg_prefix_optional_seen)
{
#ifdef REGISTER_PREFIX_OPTIONAL
flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
#else
flag_reg_prefix_optional = 0;
#endif
#ifdef REGISTER_PREFIX
init_regtable ();
#endif
}
m68k_abspcadd = 0;
if (! m68k_rel32_from_cmdline)
m68k_rel32 = 1;
}
}
const char *
md_atof (int type, char *litP, int *sizeP)
{
return ieee_md_atof (type, litP, sizeP, TRUE);
}
void
md_number_to_chars (char *buf, valueT val, int n)
{
number_to_chars_bigendian (buf, val, n);
}
void
md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
{
offsetT val = *valP;
addressT upper_limit;
offsetT lower_limit;
/* This is unnecessary but it convinces the native rs6000 compiler
to generate the code we want. */
char *buf = fixP->fx_frag->fr_literal;
buf += fixP->fx_where;
/* End ibm compiler workaround. */
val = SEXT (val);
if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
fixP->fx_done = 1;
if (fixP->fx_addsy)
{
memset (buf, 0, fixP->fx_size);
fixP->fx_addnumber = val; /* Remember value for emit_reloc. */
if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
&& !S_IS_DEFINED (fixP->fx_addsy)
&& !S_IS_WEAK (fixP->fx_addsy))
S_SET_WEAK (fixP->fx_addsy);
switch (fixP->fx_r_type)
{
case BFD_RELOC_68K_TLS_GD32:
case BFD_RELOC_68K_TLS_GD16:
case BFD_RELOC_68K_TLS_GD8:
case BFD_RELOC_68K_TLS_LDM32:
case BFD_RELOC_68K_TLS_LDM16:
case BFD_RELOC_68K_TLS_LDM8:
case BFD_RELOC_68K_TLS_LDO32:
case BFD_RELOC_68K_TLS_LDO16:
case BFD_RELOC_68K_TLS_LDO8:
case BFD_RELOC_68K_TLS_IE32:
case BFD_RELOC_68K_TLS_IE16:
case BFD_RELOC_68K_TLS_IE8:
case BFD_RELOC_68K_TLS_LE32:
case BFD_RELOC_68K_TLS_LE16:
case BFD_RELOC_68K_TLS_LE8:
S_SET_THREAD_LOCAL (fixP->fx_addsy);
break;
default:
break;
}
return;
}
if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
return;
switch (fixP->fx_size)
{
/* The cast to offsetT below are necessary to make code
correct for machines where ints are smaller than offsetT. */
case 1:
*buf++ = val;
upper_limit = 0x7f;
lower_limit = - (offsetT) 0x80;
break;
case 2:
*buf++ = (val >> 8);
*buf++ = val;
upper_limit = 0x7fff;
lower_limit = - (offsetT) 0x8000;
break;
case 4:
*buf++ = (val >> 24);
*buf++ = (val >> 16);
*buf++ = (val >> 8);
*buf++ = val;
upper_limit = 0x7fffffff;
lower_limit = - (offsetT) 0x7fffffff - 1; /* Avoid constant overflow. */
break;
default:
BAD_CASE (fixP->fx_size);
}
/* Fix up a negative reloc. */
if (fixP->fx_addsy == NULL && fixP->fx_subsy != NULL)
{
fixP->fx_addsy = fixP->fx_subsy;
fixP->fx_subsy = NULL;
fixP->fx_tcbit = 1;
}
/* For non-pc-relative values, it's conceivable we might get something
like "0xff" for a byte field. So extend the upper part of the range
to accept such numbers. We arbitrarily disallow "-0xff" or "0xff+0xff",
so that we can do any range checking at all. */
if (! fixP->fx_pcrel && ! fixP->fx_signed)
upper_limit = upper_limit * 2 + 1;
if ((addressT) val > upper_limit
&& (val > 0 || val < lower_limit))
as_bad_where (fixP->fx_file, fixP->fx_line,
_("value %ld out of range"), (long)val);
/* A one byte PC-relative reloc means a short branch. We can't use
a short branch with a value of 0 or -1, because those indicate
different opcodes (branches with longer offsets). fixup_segment
in write.c may have clobbered fx_pcrel, so we need to examine the
reloc type. */
if ((fixP->fx_pcrel
|| fixP->fx_r_type == BFD_RELOC_8_PCREL)
&& fixP->fx_size == 1
&& (fixP->fx_addsy == NULL
|| S_IS_DEFINED (fixP->fx_addsy))
&& (val == 0 || val == -1))
as_bad_where (fixP->fx_file, fixP->fx_line,
_("invalid byte branch offset"));
}
/* *fragP has been relaxed to its final size, and now needs to have
the bytes inside it modified to conform to the new size There is UGLY
MAGIC here. ..
*/
static void
md_convert_frag_1 (fragS *fragP)
{
long disp;
fixS *fixP = NULL;
/* Address in object code of the displacement. */
int object_address = fragP->fr_fix + fragP->fr_address;
/* Address in gas core of the place to store the displacement. */
/* This convinces the native rs6000 compiler to generate the code we
want. */
char *buffer_address = fragP->fr_literal;
buffer_address += fragP->fr_fix;
/* End ibm compiler workaround. */
/* The displacement of the address, from current location. */
disp = fragP->fr_symbol ? S_GET_VALUE (fragP->fr_symbol) : 0;
disp = (disp + fragP->fr_offset) - object_address;
switch (fragP->fr_subtype)
{
case TAB (BRANCHBWL, BYTE):
case TAB (BRABSJUNC, BYTE):
case TAB (BRABSJCOND, BYTE):
case TAB (BRANCHBW, BYTE):
case TAB (BRANCHBWPL, BYTE):
know (issbyte (disp));
if (disp == 0)
as_bad_where (fragP->fr_file, fragP->fr_line,
_("short branch with zero offset: use :w"));
fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC8);
fixP->fx_pcrel_adjust = -1;
break;
case TAB (BRANCHBWL, SHORT):
case TAB (BRABSJUNC, SHORT):
case TAB (BRABSJCOND, SHORT):
case TAB (BRANCHBW, SHORT):
case TAB (BRANCHBWPL, SHORT):
fragP->fr_opcode[1] = 0x00;
fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC16);
fragP->fr_fix += 2;
break;
case TAB (BRANCHBWL, LONG):
fragP->fr_opcode[1] = (char) 0xFF;
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC32);
fragP->fr_fix += 4;
break;
case TAB (BRANCHBWPL, LONG):
/* Here we are converting an unconditional branch into a pair of
conditional branches, in order to get the range. */
fragP->fr_opcode[0] = 0x66; /* bne */
fragP->fr_opcode[1] = 0xFF;
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC32);
fixP->fx_file = fragP->fr_file;
fixP->fx_line = fragP->fr_line;
fragP->fr_fix += 4; /* Skip first offset */
buffer_address += 4;
*buffer_address++ = 0x67; /* beq */
*buffer_address++ = 0xff;
fragP->fr_fix += 2; /* Skip second branch opcode */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC32);
fragP->fr_fix += 4;
break;
case TAB (BRABSJUNC, LONG):
if (fragP->fr_opcode[0] == 0x61) /* jbsr */
{
if (flag_keep_pcrel)
as_bad_where (fragP->fr_file, fragP->fr_line,
_("Conversion of PC relative BSR to absolute JSR"));
fragP->fr_opcode[0] = 0x4E;
fragP->fr_opcode[1] = (char) 0xB9; /* JSR with ABSL LONG operand. */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 0, RELAX_RELOC_ABS32);
fragP->fr_fix += 4;
}
else if (fragP->fr_opcode[0] == 0x60) /* jbra */
{
if (flag_keep_pcrel)
as_bad_where (fragP->fr_file, fragP->fr_line,
_("Conversion of PC relative branch to absolute jump"));
fragP->fr_opcode[0] = 0x4E;
fragP->fr_opcode[1] = (char) 0xF9; /* JMP with ABSL LONG operand. */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 0, RELAX_RELOC_ABS32);
fragP->fr_fix += 4;
}
else
{
/* This cannot happen, because jbsr and jbra are the only two
unconditional branches. */
abort ();
}
break;
case TAB (BRABSJCOND, LONG):
if (flag_keep_pcrel)
as_bad_where (fragP->fr_file, fragP->fr_line,
_("Conversion of PC relative conditional branch to absolute jump"));
/* Only Bcc 68000 instructions can come here
Change bcc into b!cc/jmp absl long. */
fragP->fr_opcode[0] ^= 0x01; /* Invert bcc. */
fragP->fr_opcode[1] = 0x06; /* Branch offset = 6. */
/* JF: these used to be fr_opcode[2,3], but they may be in a
different frag, in which case referring to them is a no-no.
Only fr_opcode[0,1] are guaranteed to work. */
*buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
*buffer_address++ = (char) 0xf9;
fragP->fr_fix += 2; /* Account for jmp instruction. */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 0, RELAX_RELOC_ABS32);
fragP->fr_fix += 4;
break;
case TAB (FBRANCH, SHORT):
know ((fragP->fr_opcode[1] & 0x40) == 0);
fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC16);
fragP->fr_fix += 2;
break;
case TAB (FBRANCH, LONG):
fragP->fr_opcode[1] |= 0x40; /* Turn on LONG bit. */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC32);
fragP->fr_fix += 4;
break;
case TAB (DBCCLBR, SHORT):
case TAB (DBCCABSJ, SHORT):
fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC16);
fragP->fr_fix += 2;
break;
case TAB (DBCCLBR, LONG):
/* Only DBcc instructions can come here.
Change dbcc into dbcc/bral.
JF: these used to be fr_opcode[2-7], but that's wrong. */
*buffer_address++ = 0x00; /* Branch offset = 4. */
*buffer_address++ = 0x04;
*buffer_address++ = 0x60; /* Put in bra pc+6. */
*buffer_address++ = 0x06;
*buffer_address++ = 0x60; /* Put in bral (0x60ff). */
*buffer_address++ = (char) 0xff;
fragP->fr_fix += 6; /* Account for bra/jmp instructions. */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC32);
fragP->fr_fix += 4;
break;
case TAB (DBCCABSJ, LONG):
/* Only DBcc instructions can come here.
Change dbcc into dbcc/jmp.
JF: these used to be fr_opcode[2-7], but that's wrong. */
if (flag_keep_pcrel)
as_bad_where (fragP->fr_file, fragP->fr_line,
_("Conversion of PC relative conditional branch to absolute jump"));
*buffer_address++ = 0x00; /* Branch offset = 4. */
*buffer_address++ = 0x04;
*buffer_address++ = 0x60; /* Put in bra pc + 6. */
*buffer_address++ = 0x06;
*buffer_address++ = 0x4e; /* Put in jmp long (0x4ef9). */
*buffer_address++ = (char) 0xf9;
fragP->fr_fix += 6; /* Account for bra/jmp instructions. */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 0, RELAX_RELOC_ABS32);
fragP->fr_fix += 4;
break;
case TAB (PCREL1632, SHORT):
fragP->fr_opcode[1] &= ~0x3F;
fragP->fr_opcode[1] |= 0x3A; /* 072 - mode 7.2 */
fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC16);
fragP->fr_fix += 2;
break;
case TAB (PCREL1632, LONG):
/* Already set to mode 7.3; this indicates: PC indirect with
suppressed index, 32-bit displacement. */
*buffer_address++ = 0x01;
*buffer_address++ = 0x70;
fragP->fr_fix += 2;
fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC32);
fixP->fx_pcrel_adjust = 2;
fragP->fr_fix += 4;
break;
case TAB (PCINDEX, BYTE):
gas_assert (fragP->fr_fix >= 2);
buffer_address[-2] &= ~1;
fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC8);
fixP->fx_pcrel_adjust = 1;
break;
case TAB (PCINDEX, SHORT):
gas_assert (fragP->fr_fix >= 2);
buffer_address[-2] |= 0x1;
buffer_address[-1] = 0x20;
fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC16);
fixP->fx_pcrel_adjust = 2;
fragP->fr_fix += 2;
break;
case TAB (PCINDEX, LONG):
gas_assert (fragP->fr_fix >= 2);
buffer_address[-2] |= 0x1;
buffer_address[-1] = 0x30;
fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC32);
fixP->fx_pcrel_adjust = 2;
fragP->fr_fix += 4;
break;
case TAB (ABSTOPCREL, SHORT):
fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
fragP->fr_offset, 1, RELAX_RELOC_PC16);
fragP->fr_fix += 2;
break;
case TAB (ABSTOPCREL, LONG):
if (flag_keep_pcrel)
as_bad_where (fragP->fr_file, fragP->fr_line,
_("Conversion of PC relative displacement to absolute"));
/* The thing to do here is force it to ABSOLUTE LONG, since
ABSTOPCREL is really trying to shorten an ABSOLUTE address anyway. */
if ((fragP->fr_opcode[1] & 0x3F) != 0x3A)
abort ();
fragP->fr_opcode[1] &= ~0x3F;
fragP->fr_opcode[1] |= 0x39; /* Mode 7.1 */
fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
fragP->fr_offset, 0, RELAX_RELOC_ABS32);
fragP->fr_fix += 4;
break;
}
if (fixP)
{
fixP->fx_file = fragP->fr_file;
fixP->fx_line = fragP->fr_line;
}
}
void
md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
segT sec ATTRIBUTE_UNUSED,
fragS *fragP)
{
md_convert_frag_1 (fragP);
}
/* Force truly undefined symbols to their maximum size, and generally set up
the frag list to be relaxed
*/
int
md_estimate_size_before_relax (fragS *fragP, segT segment)
{
/* Handle SZ_UNDEF first, it can be changed to BYTE or SHORT. */
switch (fragP->fr_subtype)
{
case TAB (BRANCHBWL, SZ_UNDEF):
case TAB (BRANCHBWPL, SZ_UNDEF):
case TAB (BRABSJUNC, SZ_UNDEF):
case TAB (BRABSJCOND, SZ_UNDEF):
{
if (S_GET_SEGMENT (fragP->fr_symbol) == segment
&& relaxable_symbol (fragP->fr_symbol))
{
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
}
else if (flag_short_refs)
{
/* Symbol is undefined and we want short ref. */
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
}
else
{
/* Symbol is still undefined. Make it LONG. */
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
}
break;
}
case TAB (BRANCHBW, SZ_UNDEF):
{
if (S_GET_SEGMENT (fragP->fr_symbol) == segment
&& relaxable_symbol (fragP->fr_symbol))
{
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
}
else
{
/* Symbol is undefined and we don't have long branches. */
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
}
break;
}
case TAB (FBRANCH, SZ_UNDEF):
case TAB (DBCCLBR, SZ_UNDEF):
case TAB (DBCCABSJ, SZ_UNDEF):
case TAB (PCREL1632, SZ_UNDEF):
{
if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
&& relaxable_symbol (fragP->fr_symbol))
|| flag_short_refs)
{
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
}
else
{
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
}
break;
}
case TAB (PCINDEX, SZ_UNDEF):
if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
&& relaxable_symbol (fragP->fr_symbol)))
{
fragP->fr_subtype = TAB (PCINDEX, BYTE);
}
else
{
fragP->fr_subtype = TAB (PCINDEX, LONG);
}
break;
case TAB (ABSTOPCREL, SZ_UNDEF):
{
if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
&& relaxable_symbol (fragP->fr_symbol)))
{
fragP->fr_subtype = TAB (ABSTOPCREL, SHORT);
}
else
{
fragP->fr_subtype = TAB (ABSTOPCREL, LONG);
}
break;
}
default:
break;
}
/* Now that SZ_UNDEF are taken care of, check others. */
switch (fragP->fr_subtype)
{
case TAB (BRANCHBWL, BYTE):
case TAB (BRABSJUNC, BYTE):
case TAB (BRABSJCOND, BYTE):
case TAB (BRANCHBW, BYTE):
/* We can't do a short jump to the next instruction, so in that
case we force word mode. If the symbol is at the start of a
frag, and it is the next frag with any data in it (usually
this is just the next frag, but assembler listings may
introduce empty frags), we must use word mode. */
if (fragP->fr_symbol)
{
fragS *sym_frag;
sym_frag = symbol_get_frag (fragP->fr_symbol);
if (S_GET_VALUE (fragP->fr_symbol) == sym_frag->fr_address)
{
fragS *l;
for (l = fragP->fr_next; l && l != sym_frag; l = l->fr_next)
if (l->fr_fix != 0)
break;
if (l == sym_frag)
fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
}
}
break;
default:
break;
}
return md_relax_table[fragP->fr_subtype].rlx_length;
}
#ifndef WORKING_DOT_WORD
int md_short_jump_size = 4;
int md_long_jump_size = 6;
void
md_create_short_jump (char *ptr, addressT from_addr, addressT to_addr,
fragS *frag ATTRIBUTE_UNUSED,
symbolS *to_symbol ATTRIBUTE_UNUSED)
{
valueT offset;
offset = to_addr - (from_addr + 2);
md_number_to_chars (ptr, (valueT) 0x6000, 2);
md_number_to_chars (ptr + 2, (valueT) offset, 2);
}
void
md_create_long_jump (char *ptr, addressT from_addr, addressT to_addr,
fragS *frag, symbolS *to_symbol)
{
valueT offset;
if (!HAVE_LONG_BRANCH (current_architecture))
{
if (flag_keep_pcrel)
as_fatal (_("Tried to convert PC relative branch to absolute jump"));
offset = to_addr - S_GET_VALUE (to_symbol);
md_number_to_chars (ptr, (valueT) 0x4EF9, 2);
md_number_to_chars (ptr + 2, (valueT) offset, 4);
fix_new (frag, (ptr + 2) - frag->fr_literal, 4, to_symbol, (offsetT) 0,
0, NO_RELOC);
}
else
{
offset = to_addr - (from_addr + 2);
md_number_to_chars (ptr, (valueT) 0x60ff, 2);
md_number_to_chars (ptr + 2, (valueT) offset, 4);
}
}
#endif
/* Different values of OK tell what it's OK to return. Things that
aren't OK are an error (what a shock, no?)
0: Everything is OK
10: Absolute 1:8 only
20: Absolute 0:7 only
30: absolute 0:15 only
40: Absolute 0:31 only
50: absolute 0:127 only
55: absolute -64:63 only
60: absolute -128:127 only
65: absolute 0:511 only
70: absolute 0:4095 only
80: absolute -1, 1:7 only
90: No bignums. */
static int
get_num (struct m68k_exp *exp, int ok)
{
if (exp->exp.X_op == O_absent)
{
/* Do the same thing the VAX asm does. */
op (exp) = O_constant;
adds (exp) = 0;
subs (exp) = 0;
offs (exp) = 0;
if (ok == 10)
{
as_warn (_("expression out of range: defaulting to 1"));
offs (exp) = 1;
}
}
else if (exp->exp.X_op == O_constant)
{
switch (ok)
{
case 10:
if ((valueT) TRUNC (offs (exp)) - 1 > 7)
{
as_warn (_("expression out of range: defaulting to 1"));
offs (exp) = 1;
}
break;
case 20:
if ((valueT) TRUNC (offs (exp)) > 7)
goto outrange;
break;
case 30:
if ((valueT) TRUNC (offs (exp)) > 15)
goto outrange;
break;
case 40:
if ((valueT) TRUNC (offs (exp)) > 32)
goto outrange;
break;
case 50:
if ((valueT) TRUNC (offs (exp)) > 127)
goto outrange;
break;
case 55:
if ((valueT) SEXT (offs (exp)) + 64 > 127)
goto outrange;
break;
case 60:
if ((valueT) SEXT (offs (exp)) + 128 > 255)
goto outrange;
break;
case 65:
if ((valueT) TRUNC (offs (exp)) > 511)
goto outrange;
break;
case 70:
if ((valueT) TRUNC (offs (exp)) > 4095)
{
outrange:
as_warn (_("expression out of range: defaulting to 0"));
offs (exp) = 0;
}
break;
case 80:
if ((valueT) TRUNC (offs (exp)) != 0xffffffff
&& (valueT) TRUNC (offs (exp)) - 1 > 6)
{
as_warn (_("expression out of range: defaulting to 1"));
offs (exp) = 1;
}
break;
default:
break;
}
}
else if (exp->exp.X_op == O_big)
{
if (offs (exp) <= 0 /* flonum. */
&& (ok == 90 /* no bignums */
|| (ok > 10 /* Small-int ranges including 0 ok. */
/* If we have a flonum zero, a zero integer should
do as well (e.g., in moveq). */
&& generic_floating_point_number.exponent == 0
&& generic_floating_point_number.low[0] == 0)))
{
/* HACK! Turn it into a long. */
LITTLENUM_TYPE words[6];
gen_to_words (words, 2, 8L); /* These numbers are magic! */
op (exp) = O_constant;
adds (exp) = 0;
subs (exp) = 0;
offs (exp) = words[1] | (words[0] << 16);
}
else if (ok != 0)
{
op (exp) = O_constant;
adds (exp) = 0;
subs (exp) = 0;
offs (exp) = (ok == 10) ? 1 : 0;
as_warn (_("Can't deal with expression; defaulting to %ld"),
(long) offs (exp));
}
}
else
{
if (ok >= 10 && ok <= 80)
{
op (exp) = O_constant;
adds (exp) = 0;
subs (exp) = 0;
offs (exp) = (ok == 10) ? 1 : 0;
as_warn (_("Can't deal with expression; defaulting to %ld"),
(long) offs (exp));
}
}
if (exp->size != SIZE_UNSPEC)
{
switch (exp->size)
{
case SIZE_UNSPEC:
case SIZE_LONG:
break;
case SIZE_BYTE:
if (!isbyte (offs (exp)))
as_warn (_("expression doesn't fit in BYTE"));
break;
case SIZE_WORD:
if (!isword (offs (exp)))
as_warn (_("expression doesn't fit in WORD"));
break;
}
}
return offs (exp);
}
/* These are the back-ends for the various machine dependent pseudo-ops. */
static void
s_data1 (int ignore ATTRIBUTE_UNUSED)
{
subseg_set (data_section, 1);
demand_empty_rest_of_line ();
}
static void
s_data2 (int ignore ATTRIBUTE_UNUSED)
{
subseg_set (data_section, 2);
demand_empty_rest_of_line ();
}
static void
s_bss (int ignore ATTRIBUTE_UNUSED)
{
/* We don't support putting frags in the BSS segment, we fake it
by marking in_bss, then looking at s_skip for clues. */
subseg_set (bss_section, 0);
demand_empty_rest_of_line ();
}
static void
s_even (int ignore ATTRIBUTE_UNUSED)
{
int temp;
long temp_fill;
temp = 1; /* JF should be 2? */
temp_fill = get_absolute_expression ();
if (!need_pass_2) /* Never make frag if expect extra pass. */
frag_align (temp, (int) temp_fill, 0);
demand_empty_rest_of_line ();
record_alignment (now_seg, temp);
}
static void
s_proc (int ignore ATTRIBUTE_UNUSED)
{
demand_empty_rest_of_line ();
}
/* Pseudo-ops handled for MRI compatibility. */
/* This function returns non-zero if the argument is a conditional
pseudo-op. This is called when checking whether a pending
alignment is needed. */
int
m68k_conditional_pseudoop (pseudo_typeS *pop)
{
return (pop->poc_handler == s_mri_if
|| pop->poc_handler == s_mri_else);
}
/* Handle an MRI style chip specification. */
static void
mri_chip (void)
{
char *s;
char c;
int i;
s = input_line_pointer;
/* We can't use get_symbol_name since the processor names are not proper
symbols. */
while (is_part_of_name (c = *input_line_pointer++))
;
*--input_line_pointer = 0;
for (i = 0; m68k_cpus[i].name; i++)
if (strcasecmp (s, m68k_cpus[i].name) == 0)
break;
if (!m68k_cpus[i].name)
{
as_bad (_("%s: unrecognized processor name"), s);
*input_line_pointer = c;
ignore_rest_of_line ();
return;
}
*input_line_pointer = c;
if (*input_line_pointer == '/')
current_architecture = 0;
else
current_architecture &= m68881 | m68851;
current_architecture |= m68k_cpus[i].arch & ~(m68881 | m68851);
control_regs = m68k_cpus[i].control_regs;
while (*input_line_pointer == '/')
{
++input_line_pointer;
s = input_line_pointer;
/* We can't use get_symbol_name since the processor names are not
proper symbols. */
while (is_part_of_name (c = *input_line_pointer++))
;
*--input_line_pointer = 0;
if (strcmp (s, "68881") == 0)
current_architecture |= m68881;
else if (strcmp (s, "68851") == 0)
current_architecture |= m68851;
*input_line_pointer = c;
}
}
/* The MRI CHIP pseudo-op. */
static void
s_chip (int ignore ATTRIBUTE_UNUSED)
{
char *stop = NULL;
char stopc;
if (flag_mri)
stop = mri_comment_field (&stopc);
mri_chip ();
if (flag_mri)
mri_comment_end (stop, stopc);
demand_empty_rest_of_line ();
}
/* The MRI FOPT pseudo-op. */
static void
s_fopt (int ignore ATTRIBUTE_UNUSED)
{
SKIP_WHITESPACE ();
if (strncasecmp (input_line_pointer, "ID=", 3) == 0)
{
int temp;
input_line_pointer += 3;
temp = get_absolute_expression ();
if (temp < 0 || temp > 7)
as_bad (_("bad coprocessor id"));
else
m68k_float_copnum = COP0 + temp;
}
else
{
as_bad (_("unrecognized fopt option"));
ignore_rest_of_line ();
return;
}
demand_empty_rest_of_line ();
}
/* The structure used to handle the MRI OPT pseudo-op. */
struct opt_action
{
/* The name of the option. */
const char *name;
/* If this is not NULL, just call this function. The first argument
is the ARG field of this structure, the second argument is
whether the option was negated. */
void (*pfn) (int arg, int on);
/* If this is not NULL, and the PFN field is NULL, set the variable
this points to. Set it to the ARG field if the option was not
negated, and the NOTARG field otherwise. */
int *pvar;
/* The value to pass to PFN or to assign to *PVAR. */
int arg;
/* The value to assign to *PVAR if the option is negated. If PFN is
NULL, and PVAR is not NULL, and ARG and NOTARG are the same, then
the option may not be negated. */
int notarg;
};
/* The table used to handle the MRI OPT pseudo-op. */
static void skip_to_comma (int, int);
static void opt_nest (int, int);
static void opt_chip (int, int);
static void opt_list (int, int);
static void opt_list_symbols (int, int);
static const struct opt_action opt_table[] =
{
{ "abspcadd", 0, &m68k_abspcadd, 1, 0 },
/* We do relaxing, so there is little use for these options. */
{ "b", 0, 0, 0, 0 },
{ "brs", 0, 0, 0, 0 },
{ "brb", 0, 0, 0, 0 },
{ "brl", 0, 0, 0, 0 },
{ "brw", 0, 0, 0, 0 },
{ "c", 0, 0, 0, 0 },
{ "cex", 0, 0, 0, 0 },
{ "case", 0, &symbols_case_sensitive, 1, 0 },
{ "cl", 0, 0, 0, 0 },
{ "cre", 0, 0, 0, 0 },
{ "d", 0, &flag_keep_locals, 1, 0 },
{ "e", 0, 0, 0, 0 },
{ "f", 0, &flag_short_refs, 1, 0 },
{ "frs", 0, &flag_short_refs, 1, 0 },
{ "frl", 0, &flag_short_refs, 0, 1 },
{ "g", 0, 0, 0, 0 },
{ "i", 0, 0, 0, 0 },
{ "m", 0, 0, 0, 0 },
{ "mex", 0, 0, 0, 0 },
{ "mc", 0, 0, 0, 0 },
{ "md", 0, 0, 0, 0 },
{ "nest", opt_nest, 0, 0, 0 },
{ "next", skip_to_comma, 0, 0, 0 },
{ "o", 0, 0, 0, 0 },
{ "old", 0, 0, 0, 0 },
{ "op", skip_to_comma, 0, 0, 0 },
{ "pco", 0, 0, 0, 0 },
{ "p", opt_chip, 0, 0, 0 },
{ "pcr", 0, 0, 0, 0 },
{ "pcs", 0, 0, 0, 0 },
{ "r", 0, 0, 0, 0 },
{ "quick", 0, &m68k_quick, 1, 0 },
{ "rel32", 0, &m68k_rel32, 1, 0 },
{ "s", opt_list, 0, 0, 0 },
{ "t", opt_list_symbols, 0, 0, 0 },
{ "w", 0, &flag_no_warnings, 0, 1 },
{ "x", 0, 0, 0, 0 }
};
#define OPTCOUNT ((int) (sizeof opt_table / sizeof opt_table[0]))
/* The MRI OPT pseudo-op. */
static void
s_opt (int ignore ATTRIBUTE_UNUSED)
{
do
{
int t;
char *s;
char c;
int i;
const struct opt_action *o;
SKIP_WHITESPACE ();
t = 1;
if (*input_line_pointer == '-')
{
++input_line_pointer;
t = 0;
}
else if (strncasecmp (input_line_pointer, "NO", 2) == 0)
{
input_line_pointer += 2;
t = 0;
}
c = get_symbol_name (&s);
for (i = 0, o = opt_table; i < OPTCOUNT; i++, o++)
{
if (strcasecmp (s, o->name) == 0)
{
if (o->pfn)
{
/* Restore input_line_pointer now in case the option
takes arguments. */
(void) restore_line_pointer (c);
(*o->pfn) (o->arg, t);
}
else if (o->pvar != NULL)
{
if (! t && o->arg == o->notarg)
as_bad (_("option `%s' may not be negated"), s);
restore_line_pointer (c);
*o->pvar = t ? o->arg : o->notarg;
}
else
*input_line_pointer = c;
break;
}
}
if (i >= OPTCOUNT)
{
as_bad (_("option `%s' not recognized"), s);
restore_line_pointer (c);
}
}
while (*input_line_pointer++ == ',');
/* Move back to terminating character. */
--input_line_pointer;
demand_empty_rest_of_line ();
}
/* Skip ahead to a comma. This is used for OPT options which we do
not support and which take arguments. */
static void
skip_to_comma (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
{
while (*input_line_pointer != ','
&& ! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
/* Handle the OPT NEST=depth option. */
static void
opt_nest (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
{
if (*input_line_pointer != '=')
{
as_bad (_("bad format of OPT NEST=depth"));
return;
}
++input_line_pointer;
max_macro_nest = get_absolute_expression ();
}
/* Handle the OPT P=chip option. */
static void
opt_chip (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
{
if (*input_line_pointer != '=')
{
/* This is just OPT P, which we do not support. */
return;
}
++input_line_pointer;
mri_chip ();
}
/* Handle the OPT S option. */
static void
opt_list (int arg ATTRIBUTE_UNUSED, int on)
{
listing_list (on);
}
/* Handle the OPT T option. */
static void
opt_list_symbols (int arg ATTRIBUTE_UNUSED, int on)
{
if (on)
listing |= LISTING_SYMBOLS;
else
listing &= ~LISTING_SYMBOLS;
}
/* Handle the MRI REG pseudo-op. */
static void
s_reg (int ignore ATTRIBUTE_UNUSED)
{
char *s;
int c;
struct m68k_op rop;
int mask;
char *stop = NULL;
char stopc;
if (line_label == NULL)
{
as_bad (_("missing label"));
ignore_rest_of_line ();
return;
}
if (flag_mri)
stop = mri_comment_field (&stopc);
SKIP_WHITESPACE ();
s = input_line_pointer;
while (ISALNUM (*input_line_pointer)
#ifdef REGISTER_PREFIX
|| *input_line_pointer == REGISTER_PREFIX
#endif
|| *input_line_pointer == '/'
|| *input_line_pointer == '-')
++input_line_pointer;
c = *input_line_pointer;
*input_line_pointer = '\0';
if (m68k_ip_op (s, &rop) != 0)
{
if (rop.error == NULL)
as_bad (_("bad register list"));
else
as_bad (_("bad register list: %s"), rop.error);
*input_line_pointer = c;
ignore_rest_of_line ();
return;
}
*input_line_pointer = c;
if (rop.mode == REGLST)
mask = rop.mask;
else if (rop.mode == DREG)
mask = 1 << (rop.reg - DATA0);
else if (rop.mode == AREG)
mask = 1 << (rop.reg - ADDR0 + 8);
else if (rop.mode == FPREG)
mask = 1 << (rop.reg - FP0 + 16);
else if (rop.mode == CONTROL
&& rop.reg == FPI)
mask = 1 << 24;
else if (rop.mode == CONTROL
&& rop.reg == FPS)
mask = 1 << 25;
else if (rop.mode == CONTROL
&& rop.reg == FPC)
mask = 1 << 26;
else
{
as_bad (_("bad register list"));
ignore_rest_of_line ();
return;
}
S_SET_SEGMENT (line_label, reg_section);
S_SET_VALUE (line_label, ~mask);
symbol_set_frag (line_label, &zero_address_frag);
if (flag_mri)
mri_comment_end (stop, stopc);
demand_empty_rest_of_line ();
}
/* This structure is used for the MRI SAVE and RESTORE pseudo-ops. */
struct save_opts
{
struct save_opts *next;
int abspcadd;
int symbols_case_sensitive;
int keep_locals;
int short_refs;
int architecture;
const enum m68k_register *control_regs;
int quick;
int rel32;
int listing;
int no_warnings;
/* FIXME: We don't save OPT S. */
};
/* This variable holds the stack of saved options. */
static struct save_opts *save_stack;
/* The MRI SAVE pseudo-op. */
static void
s_save (int ignore ATTRIBUTE_UNUSED)
{
struct save_opts *s;
s = XNEW (struct save_opts);
s->abspcadd = m68k_abspcadd;
s->symbols_case_sensitive = symbols_case_sensitive;
s->keep_locals = flag_keep_locals;
s->short_refs = flag_short_refs;
s->architecture = current_architecture;
s->control_regs = control_regs;
s->quick = m68k_quick;
s->rel32 = m68k_rel32;
s->listing = listing;
s->no_warnings = flag_no_warnings;
s->next = save_stack;
save_stack = s;
demand_empty_rest_of_line ();
}
/* The MRI RESTORE pseudo-op. */
static void
s_restore (int ignore ATTRIBUTE_UNUSED)
{
struct save_opts *s;
if (save_stack == NULL)
{
as_bad (_("restore without save"));
ignore_rest_of_line ();
return;
}
s = save_stack;
save_stack = s->next;
m68k_abspcadd = s->abspcadd;
symbols_case_sensitive = s->symbols_case_sensitive;
flag_keep_locals = s->keep_locals;
flag_short_refs = s->short_refs;
current_architecture = s->architecture;
control_regs = s->control_regs;
m68k_quick = s->quick;
m68k_rel32 = s->rel32;
listing = s->listing;
flag_no_warnings = s->no_warnings;
free (s);
demand_empty_rest_of_line ();
}
/* Types of MRI structured control directives. */
enum mri_control_type
{
mri_for,
mri_if,
mri_repeat,
mri_while
};
/* This structure is used to stack the MRI structured control
directives. */
struct mri_control_info
{
/* The directive within which this one is enclosed. */
struct mri_control_info *outer;
/* The type of directive. */
enum mri_control_type type;
/* Whether an ELSE has been in an IF. */
int else_seen;
/* The add or sub statement at the end of a FOR. */
char *incr;
/* The label of the top of a FOR or REPEAT loop. */
char *top;
/* The label to jump to for the next iteration, or the else
expression of a conditional. */
char *next;
/* The label to jump to to break out of the loop, or the label past
the end of a conditional. */
char *bottom;
};
/* The stack of MRI structured control directives. */
static struct mri_control_info *mri_control_stack;
/* The current MRI structured control directive index number, used to
generate label names. */
static int mri_control_index;
/* Assemble an instruction for an MRI structured control directive. */
static void
mri_assemble (char *str)
{
char *s;
/* md_assemble expects the opcode to be in lower case. */
for (s = str; *s != ' ' && *s != '\0'; s++)
*s = TOLOWER (*s);
md_assemble (str);
}
/* Generate a new MRI label structured control directive label name. */
static char *
mri_control_label (void)
{
char *n;
n = XNEWVEC (char, 20);
sprintf (n, "%smc%d", FAKE_LABEL_NAME, mri_control_index);
++mri_control_index;
return n;
}
/* Create a new MRI structured control directive. */
static struct mri_control_info *
push_mri_control (enum mri_control_type type)
{
struct mri_control_info *n;
n = XNEW (struct mri_control_info);
n->type = type;
n->else_seen = 0;
if (type == mri_if || type == mri_while)
n->top = NULL;
else
n->top = mri_control_label ();
n->next = mri_control_label ();
n->bottom = mri_control_label ();
n->outer = mri_control_stack;
mri_control_stack = n;
return n;
}
/* Pop off the stack of MRI structured control directives. */
static void
pop_mri_control (void)
{
struct mri_control_info *n;
n = mri_control_stack;
mri_control_stack = n->outer;
free (n->top);
free (n->next);
free (n->bottom);
free (n);
}
/* Recognize a condition code in an MRI structured control expression. */
static int
parse_mri_condition (int *pcc)
{
char c1, c2;
know (*input_line_pointer == '<');
++input_line_pointer;
c1 = *input_line_pointer++;
c2 = *input_line_pointer++;
if (*input_line_pointer != '>')
{
as_bad (_("syntax error in structured control directive"));
return 0;
}
++input_line_pointer;
SKIP_WHITESPACE ();
c1 = TOLOWER (c1);
c2 = TOLOWER (c2);
*pcc = (c1 << 8) | c2;
return 1;
}
/* Parse a single operand in an MRI structured control expression. */
static int
parse_mri_control_operand (int *pcc, char **leftstart, char **leftstop,
char **rightstart, char **rightstop)
{
char *s;
SKIP_WHITESPACE ();
*pcc = -1;
*leftstart = NULL;
*leftstop = NULL;
*rightstart = NULL;
*rightstop = NULL;
if (*input_line_pointer == '<')
{
/* It's just a condition code. */
return parse_mri_condition (pcc);
}
/* Look ahead for the condition code. */
for (s = input_line_pointer; *s != '\0'; ++s)
{
if (*s == '<' && s[1] != '\0' && s[2] != '\0' && s[3] == '>')
break;
}
if (*s == '\0')
{
as_bad (_("missing condition code in structured control directive"));
return 0;
}
*leftstart = input_line_pointer;
*leftstop = s;
if (*leftstop > *leftstart
&& ((*leftstop)[-1] == ' ' || (*leftstop)[-1] == '\t'))
--*leftstop;
input_line_pointer = s;
if (! parse_mri_condition (pcc))
return 0;
/* Look ahead for AND or OR or end of line. */
for (s = input_line_pointer; *s != '\0'; ++s)
{
/* We must make sure we don't misinterpret AND/OR at the end of labels!
if d0 <eq> #FOOAND and d1 <ne> #BAROR then
^^^ ^^ */
if ((s == input_line_pointer
|| *(s-1) == ' '
|| *(s-1) == '\t')
&& ((strncasecmp (s, "AND", 3) == 0
&& (s[3] == '.' || ! is_part_of_name (s[3])))
|| (strncasecmp (s, "OR", 2) == 0
&& (s[2] == '.' || ! is_part_of_name (s[2])))))
break;
}
*rightstart = input_line_pointer;
*rightstop = s;
if (*rightstop > *rightstart
&& ((*rightstop)[-1] == ' ' || (*rightstop)[-1] == '\t'))
--*rightstop;
input_line_pointer = s;
return 1;
}
#define MCC(b1, b2) (((b1) << 8) | (b2))
/* Swap the sense of a condition. This changes the condition so that
it generates the same result when the operands are swapped. */
static int
swap_mri_condition (int cc)
{
switch (cc)
{
case MCC ('h', 'i'): return MCC ('c', 's');
case MCC ('l', 's'): return MCC ('c', 'c');
/* <HS> is an alias for <CC>. */
case MCC ('h', 's'):
case MCC ('c', 'c'): return MCC ('l', 's');
/* <LO> is an alias for <CS>. */
case MCC ('l', 'o'):
case MCC ('c', 's'): return MCC ('h', 'i');
case MCC ('p', 'l'): return MCC ('m', 'i');
case MCC ('m', 'i'): return MCC ('p', 'l');
case MCC ('g', 'e'): return MCC ('l', 'e');
case MCC ('l', 't'): return MCC ('g', 't');
case MCC ('g', 't'): return MCC ('l', 't');
case MCC ('l', 'e'): return MCC ('g', 'e');
/* Issue a warning for conditions we can not swap. */
case MCC ('n', 'e'): return MCC ('n', 'e'); /* no problem here */
case MCC ('e', 'q'): return MCC ('e', 'q'); /* also no problem */
case MCC ('v', 'c'):
case MCC ('v', 's'):
default :
as_warn (_("Condition <%c%c> in structured control directive can not be encoded correctly"),
(char) (cc >> 8), (char) (cc));
break;
}
return cc;
}
/* Reverse the sense of a condition. */
static int
reverse_mri_condition (int cc)
{
switch (cc)
{
case MCC ('h', 'i'): return MCC ('l', 's');
case MCC ('l', 's'): return MCC ('h', 'i');
/* <HS> is an alias for <CC> */
case MCC ('h', 's'): return MCC ('l', 'o');
case MCC ('c', 'c'): return MCC ('c', 's');
/* <LO> is an alias for <CS> */
case MCC ('l', 'o'): return MCC ('h', 's');
case MCC ('c', 's'): return MCC ('c', 'c');
case MCC ('n', 'e'): return MCC ('e', 'q');
case MCC ('e', 'q'): return MCC ('n', 'e');
case MCC ('v', 'c'): return MCC ('v', 's');
case MCC ('v', 's'): return MCC ('v', 'c');
case MCC ('p', 'l'): return MCC ('m', 'i');
case MCC ('m', 'i'): return MCC ('p', 'l');
case MCC ('g', 'e'): return MCC ('l', 't');
case MCC ('l', 't'): return MCC ('g', 'e');
case MCC ('g', 't'): return MCC ('l', 'e');
case MCC ('l', 'e'): return MCC ('g', 't');
}
return cc;
}
/* Build an MRI structured control expression. This generates test
and branch instructions. It goes to TRUELAB if the condition is
true, and to FALSELAB if the condition is false. Exactly one of
TRUELAB and FALSELAB will be NULL, meaning to fall through. QUAL
is the size qualifier for the expression. EXTENT is the size to
use for the branch. */
static void
build_mri_control_operand (int qual, int cc, char *leftstart, char *leftstop,
char *rightstart, char *rightstop,
const char *truelab, const char *falselab,
int extent)
{
char *buf;
char *s;
if (leftstart != NULL)
{
struct m68k_op leftop, rightop;
char c;
/* Swap the compare operands, if necessary, to produce a legal
m68k compare instruction. Comparing a register operand with
a non-register operand requires the register to be on the
right (cmp, cmpa). Comparing an immediate value with
anything requires the immediate value to be on the left
(cmpi). */
c = *leftstop;
*leftstop = '\0';
(void) m68k_ip_op (leftstart, &leftop);
*leftstop = c;
c = *rightstop;
*rightstop = '\0';
(void) m68k_ip_op (rightstart, &rightop);
*rightstop = c;
if (rightop.mode == IMMED
|| ((leftop.mode == DREG || leftop.mode == AREG)
&& (rightop.mode != DREG && rightop.mode != AREG)))
{
char *temp;
/* Correct conditional handling:
if #1 <lt> d0 then ;means if (1 < d0)
...
endi
should assemble to:
cmp #1,d0 if we do *not* swap the operands
bgt true we need the swapped condition!
ble false
true:
...
false:
*/
temp = leftstart;
leftstart = rightstart;
rightstart = temp;
temp = leftstop;
leftstop = rightstop;
rightstop = temp;
}
else
{
cc = swap_mri_condition (cc);
}
}
if (truelab == NULL)
{
cc = reverse_mri_condition (cc);
truelab = falselab;
}
if (leftstart != NULL)
{
buf = XNEWVEC (char, (20
+ (leftstop - leftstart)
+ (rightstop - rightstart)));
s = buf;
*s++ = 'c';
*s++ = 'm';
*s++ = 'p';
if (qual != '\0')
*s++ = TOLOWER (qual);
*s++ = ' ';
memcpy (s, leftstart, leftstop - leftstart);
s += leftstop - leftstart;
*s++ = ',';
memcpy (s, rightstart, rightstop - rightstart);
s += rightstop - rightstart;
*s = '\0';
mri_assemble (buf);
free (buf);
}
buf = XNEWVEC (char, 20 + strlen (truelab));
s = buf;
*s++ = 'b';
*s++ = cc >> 8;
*s++ = cc & 0xff;
if (extent != '\0')
*s++ = TOLOWER (extent);
*s++ = ' ';
strcpy (s, truelab);
mri_assemble (buf);
free (buf);
}
/* Parse an MRI structured control expression. This generates test
and branch instructions. STOP is where the expression ends. It
goes to TRUELAB if the condition is true, and to FALSELAB if the
condition is false. Exactly one of TRUELAB and FALSELAB will be
NULL, meaning to fall through. QUAL is the size qualifier for the
expression. EXTENT is the size to use for the branch. */
static void
parse_mri_control_expression (char *stop, int qual, const char *truelab,
const char *falselab, int extent)
{
int c;
int cc;
char *leftstart;
char *leftstop;
char *rightstart;
char *rightstop;
c = *stop;
*stop = '\0';
if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
&rightstart, &rightstop))
{
*stop = c;
return;
}
if (strncasecmp (input_line_pointer, "AND", 3) == 0)
{
const char *flab;
if (falselab != NULL)
flab = falselab;
else
flab = mri_control_label ();
build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
rightstop, (const char *) NULL, flab, extent);
input_line_pointer += 3;
if (*input_line_pointer != '.'
|| input_line_pointer[1] == '\0')
qual = '\0';
else
{
qual = input_line_pointer[1];
input_line_pointer += 2;
}
if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
&rightstart, &rightstop))
{
*stop = c;
return;
}
build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
rightstop, truelab, falselab, extent);
if (falselab == NULL)
colon (flab);
}
else if (strncasecmp (input_line_pointer, "OR", 2) == 0)
{
const char *tlab;
if (truelab != NULL)
tlab = truelab;
else
tlab = mri_control_label ();
build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
rightstop, tlab, (const char *) NULL, extent);
input_line_pointer += 2;
if (*input_line_pointer != '.'
|| input_line_pointer[1] == '\0')
qual = '\0';
else
{
qual = input_line_pointer[1];
input_line_pointer += 2;
}
if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
&rightstart, &rightstop))
{
*stop = c;
return;
}
build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
rightstop, truelab, falselab, extent);
if (truelab == NULL)
colon (tlab);
}
else
{
build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
rightstop, truelab, falselab, extent);
}
*stop = c;
if (input_line_pointer != stop)
as_bad (_("syntax error in structured control directive"));
}
/* Handle the MRI IF pseudo-op. This may be a structured control
directive, or it may be a regular assembler conditional, depending
on its operands. */
static void
s_mri_if (int qual)
{
char *s;
int c;
struct mri_control_info *n;
/* A structured control directive must end with THEN with an
optional qualifier. */
s = input_line_pointer;
/* We only accept '*' as introduction of comments if preceded by white space
or at first column of a line (I think this can't actually happen here?)
This is important when assembling:
if d0 <ne> 12(a0,d0*2) then
if d0 <ne> #CONST*20 then. */
while (! (is_end_of_line[(unsigned char) *s]
|| (flag_mri
&& *s == '*'
&& (s == input_line_pointer
|| *(s-1) == ' '
|| *(s-1) == '\t'))))
++s;
--s;
while (s > input_line_pointer && (*s == ' ' || *s == '\t'))
--s;
if (s - input_line_pointer > 1
&& s[-1] == '.')
s -= 2;
if (s - input_line_pointer < 3
|| strncasecmp (s - 3, "THEN", 4) != 0)
{
if (qual != '\0')
{
as_bad (_("missing then"));
ignore_rest_of_line ();
return;
}
/* It's a conditional. */
s_if (O_ne);
return;
}
/* Since this might be a conditional if, this pseudo-op will be
called even if we are supported to be ignoring input. Double
check now. Clobber *input_line_pointer so that ignore_input
thinks that this is not a special pseudo-op. */
c = *input_line_pointer;
*input_line_pointer = 0;
if (ignore_input ())
{
*input_line_pointer = c;
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
demand_empty_rest_of_line ();
return;
}
*input_line_pointer = c;
n = push_mri_control (mri_if);
parse_mri_control_expression (s - 3, qual, (const char *) NULL,
n->next, s[1] == '.' ? s[2] : '\0');
if (s[1] == '.')
input_line_pointer = s + 3;
else
input_line_pointer = s + 1;
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI else pseudo-op. If we are currently doing an MRI
structured IF, associate the ELSE with the IF. Otherwise, assume
it is a conditional else. */
static void
s_mri_else (int qual)
{
int c;
char *buf;
char q[2];
if (qual == '\0'
&& (mri_control_stack == NULL
|| mri_control_stack->type != mri_if
|| mri_control_stack->else_seen))
{
s_else (0);
return;
}
c = *input_line_pointer;
*input_line_pointer = 0;
if (ignore_input ())
{
*input_line_pointer = c;
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
demand_empty_rest_of_line ();
return;
}
*input_line_pointer = c;
if (mri_control_stack == NULL
|| mri_control_stack->type != mri_if
|| mri_control_stack->else_seen)
{
as_bad (_("else without matching if"));
ignore_rest_of_line ();
return;
}
mri_control_stack->else_seen = 1;
buf = XNEWVEC (char, 20 + strlen (mri_control_stack->bottom));
q[0] = TOLOWER (qual);
q[1] = '\0';
sprintf (buf, "bra%s %s", q, mri_control_stack->bottom);
mri_assemble (buf);
free (buf);
colon (mri_control_stack->next);
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI ENDI pseudo-op. */
static void
s_mri_endi (int ignore ATTRIBUTE_UNUSED)
{
if (mri_control_stack == NULL
|| mri_control_stack->type != mri_if)
{
as_bad (_("endi without matching if"));
ignore_rest_of_line ();
return;
}
/* ignore_input will not return true for ENDI, so we don't need to
worry about checking it again here. */
if (! mri_control_stack->else_seen)
colon (mri_control_stack->next);
colon (mri_control_stack->bottom);
pop_mri_control ();
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI BREAK pseudo-op. */
static void
s_mri_break (int extent)
{
struct mri_control_info *n;
char *buf;
char ex[2];
n = mri_control_stack;
while (n != NULL
&& n->type != mri_for
&& n->type != mri_repeat
&& n->type != mri_while)
n = n->outer;
if (n == NULL)
{
as_bad (_("break outside of structured loop"));
ignore_rest_of_line ();
return;
}
buf = XNEWVEC (char, 20 + strlen (n->bottom));
ex[0] = TOLOWER (extent);
ex[1] = '\0';
sprintf (buf, "bra%s %s", ex, n->bottom);
mri_assemble (buf);
free (buf);
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI NEXT pseudo-op. */
static void
s_mri_next (int extent)
{
struct mri_control_info *n;
char *buf;
char ex[2];
n = mri_control_stack;
while (n != NULL
&& n->type != mri_for
&& n->type != mri_repeat
&& n->type != mri_while)
n = n->outer;
if (n == NULL)
{
as_bad (_("next outside of structured loop"));
ignore_rest_of_line ();
return;
}
buf = XNEWVEC (char, 20 + strlen (n->next));
ex[0] = TOLOWER (extent);
ex[1] = '\0';
sprintf (buf, "bra%s %s", ex, n->next);
mri_assemble (buf);
free (buf);
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI FOR pseudo-op. */
static void
s_mri_for (int qual)
{
const char *varstart, *varstop;
const char *initstart, *initstop;
const char *endstart, *endstop;
const char *bystart, *bystop;
int up;
int by;
int extent;
struct mri_control_info *n;
char *buf;
char *s;
char ex[2];
/* The syntax is
FOR.q var = init { TO | DOWNTO } end [ BY by ] DO.e
*/
SKIP_WHITESPACE ();
varstart = input_line_pointer;
/* Look for the '='. */
while (! is_end_of_line[(unsigned char) *input_line_pointer]
&& *input_line_pointer != '=')
++input_line_pointer;
if (*input_line_pointer != '=')
{
as_bad (_("missing ="));
ignore_rest_of_line ();
return;
}
varstop = input_line_pointer;
if (varstop > varstart
&& (varstop[-1] == ' ' || varstop[-1] == '\t'))
--varstop;
++input_line_pointer;
initstart = input_line_pointer;
/* Look for TO or DOWNTO. */
up = 1;
initstop = NULL;
while (! is_end_of_line[(unsigned char) *input_line_pointer])
{
if (strncasecmp (input_line_pointer, "TO", 2) == 0
&& ! is_part_of_name (input_line_pointer[2]))
{
initstop = input_line_pointer;
input_line_pointer += 2;
break;
}
if (strncasecmp (input_line_pointer, "DOWNTO", 6) == 0
&& ! is_part_of_name (input_line_pointer[6]))
{
initstop = input_line_pointer;
up = 0;
input_line_pointer += 6;
break;
}
++input_line_pointer;
}
if (initstop == NULL)
{
as_bad (_("missing to or downto"));
ignore_rest_of_line ();
return;
}
if (initstop > initstart
&& (initstop[-1] == ' ' || initstop[-1] == '\t'))
--initstop;
SKIP_WHITESPACE ();
endstart = input_line_pointer;
/* Look for BY or DO. */
by = 0;
endstop = NULL;
while (! is_end_of_line[(unsigned char) *input_line_pointer])
{
if (strncasecmp (input_line_pointer, "BY", 2) == 0
&& ! is_part_of_name (input_line_pointer[2]))
{
endstop = input_line_pointer;
by = 1;
input_line_pointer += 2;
break;
}
if (strncasecmp (input_line_pointer, "DO", 2) == 0
&& (input_line_pointer[2] == '.'
|| ! is_part_of_name (input_line_pointer[2])))
{
endstop = input_line_pointer;
input_line_pointer += 2;
break;
}
++input_line_pointer;
}
if (endstop == NULL)
{
as_bad (_("missing do"));
ignore_rest_of_line ();
return;
}
if (endstop > endstart
&& (endstop[-1] == ' ' || endstop[-1] == '\t'))
--endstop;
if (! by)
{
bystart = "#1";
bystop = bystart + 2;
}
else
{
SKIP_WHITESPACE ();
bystart = input_line_pointer;
/* Look for DO. */
bystop = NULL;
while (! is_end_of_line[(unsigned char) *input_line_pointer])
{
if (strncasecmp (input_line_pointer, "DO", 2) == 0
&& (input_line_pointer[2] == '.'
|| ! is_part_of_name (input_line_pointer[2])))
{
bystop = input_line_pointer;
input_line_pointer += 2;
break;
}
++input_line_pointer;
}
if (bystop == NULL)
{
as_bad (_("missing do"));
ignore_rest_of_line ();
return;
}
if (bystop > bystart
&& (bystop[-1] == ' ' || bystop[-1] == '\t'))
--bystop;
}
if (*input_line_pointer != '.')
extent = '\0';
else
{
extent = input_line_pointer[1];
input_line_pointer += 2;
}
/* We have fully parsed the FOR operands. Now build the loop. */
n = push_mri_control (mri_for);
buf = XNEWVEC (char, 50 + (input_line_pointer - varstart));
/* Move init,var. */
s = buf;
*s++ = 'm';
*s++ = 'o';
*s++ = 'v';
*s++ = 'e';
if (qual != '\0')
*s++ = TOLOWER (qual);
*s++ = ' ';
memcpy (s, initstart, initstop - initstart);
s += initstop - initstart;
*s++ = ',';
memcpy (s, varstart, varstop - varstart);
s += varstop - varstart;
*s = '\0';
mri_assemble (buf);
colon (n->top);
/* cmp end,var. */
s = buf;
*s++ = 'c';
*s++ = 'm';
*s++ = 'p';
if (qual != '\0')
*s++ = TOLOWER (qual);
*s++ = ' ';
memcpy (s, endstart, endstop - endstart);
s += endstop - endstart;
*s++ = ',';
memcpy (s, varstart, varstop - varstart);
s += varstop - varstart;
*s = '\0';
mri_assemble (buf);
/* bcc bottom. */
ex[0] = TOLOWER (extent);
ex[1] = '\0';
if (up)
sprintf (buf, "blt%s %s", ex, n->bottom);
else
sprintf (buf, "bgt%s %s", ex, n->bottom);
mri_assemble (buf);
/* Put together the add or sub instruction used by ENDF. */
s = buf;
if (up)
strcpy (s, "add");
else
strcpy (s, "sub");
s += 3;
if (qual != '\0')
*s++ = TOLOWER (qual);
*s++ = ' ';
memcpy (s, bystart, bystop - bystart);
s += bystop - bystart;
*s++ = ',';
memcpy (s, varstart, varstop - varstart);
s += varstop - varstart;
*s = '\0';
n->incr = buf;
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI ENDF pseudo-op. */
static void
s_mri_endf (int ignore ATTRIBUTE_UNUSED)
{
if (mri_control_stack == NULL
|| mri_control_stack->type != mri_for)
{
as_bad (_("endf without for"));
ignore_rest_of_line ();
return;
}
colon (mri_control_stack->next);
mri_assemble (mri_control_stack->incr);
sprintf (mri_control_stack->incr, "bra %s", mri_control_stack->top);
mri_assemble (mri_control_stack->incr);
free (mri_control_stack->incr);
colon (mri_control_stack->bottom);
pop_mri_control ();
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI REPEAT pseudo-op. */
static void
s_mri_repeat (int ignore ATTRIBUTE_UNUSED)
{
struct mri_control_info *n;
n = push_mri_control (mri_repeat);
colon (n->top);
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI UNTIL pseudo-op. */
static void
s_mri_until (int qual)
{
char *s;
if (mri_control_stack == NULL
|| mri_control_stack->type != mri_repeat)
{
as_bad (_("until without repeat"));
ignore_rest_of_line ();
return;
}
colon (mri_control_stack->next);
for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
;
parse_mri_control_expression (s, qual, (const char *) NULL,
mri_control_stack->top, '\0');
colon (mri_control_stack->bottom);
input_line_pointer = s;
pop_mri_control ();
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI WHILE pseudo-op. */
static void
s_mri_while (int qual)
{
char *s;
struct mri_control_info *n;
s = input_line_pointer;
/* We only accept '*' as introduction of comments if preceded by white space
or at first column of a line (I think this can't actually happen here?)
This is important when assembling:
while d0 <ne> 12(a0,d0*2) do
while d0 <ne> #CONST*20 do. */
while (! (is_end_of_line[(unsigned char) *s]
|| (flag_mri
&& *s == '*'
&& (s == input_line_pointer
|| *(s-1) == ' '
|| *(s-1) == '\t'))))
s++;
--s;
while (*s == ' ' || *s == '\t')
--s;
if (s - input_line_pointer > 1
&& s[-1] == '.')
s -= 2;
if (s - input_line_pointer < 2
|| strncasecmp (s - 1, "DO", 2) != 0)
{
as_bad (_("missing do"));
ignore_rest_of_line ();
return;
}
n = push_mri_control (mri_while);
colon (n->next);
parse_mri_control_expression (s - 1, qual, (const char *) NULL, n->bottom,
s[1] == '.' ? s[2] : '\0');
input_line_pointer = s + 1;
if (*input_line_pointer == '.')
input_line_pointer += 2;
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Handle the MRI ENDW pseudo-op. */
static void
s_mri_endw (int ignore ATTRIBUTE_UNUSED)
{
char *buf;
if (mri_control_stack == NULL
|| mri_control_stack->type != mri_while)
{
as_bad (_("endw without while"));
ignore_rest_of_line ();
return;
}
buf = XNEWVEC (char, 20 + strlen (mri_control_stack->next));
sprintf (buf, "bra %s", mri_control_stack->next);
mri_assemble (buf);
free (buf);
colon (mri_control_stack->bottom);
pop_mri_control ();
if (flag_mri)
{
while (! is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
demand_empty_rest_of_line ();
}
/* Parse a .cpu directive. */
static void
s_m68k_cpu (int ignored ATTRIBUTE_UNUSED)
{
char saved_char;
char *name;
if (initialized)
{
as_bad (_("already assembled instructions"));
ignore_rest_of_line ();
return;
}
name = input_line_pointer;
while (*input_line_pointer && !ISSPACE(*input_line_pointer))
input_line_pointer++;
saved_char = *input_line_pointer;
*input_line_pointer = 0;
m68k_set_cpu (name, 1, 0);
*input_line_pointer = saved_char;
demand_empty_rest_of_line ();
return;
}
/* Parse a .arch directive. */
static void
s_m68k_arch (int ignored ATTRIBUTE_UNUSED)
{
char saved_char;
char *name;
if (initialized)
{
as_bad (_("already assembled instructions"));
ignore_rest_of_line ();
return;
}
name = input_line_pointer;
while (*input_line_pointer && *input_line_pointer != ','
&& !ISSPACE (*input_line_pointer))
input_line_pointer++;
saved_char = *input_line_pointer;
*input_line_pointer = 0;
if (m68k_set_arch (name, 1, 0))
{
/* Scan extensions. */
do
{
*input_line_pointer++ = saved_char;
if (!*input_line_pointer || ISSPACE (*input_line_pointer))
break;
name = input_line_pointer;
while (*input_line_pointer && *input_line_pointer != ','
&& !ISSPACE (*input_line_pointer))
input_line_pointer++;
saved_char = *input_line_pointer;
*input_line_pointer = 0;
}
while (m68k_set_extension (name, 1, 0));
}
*input_line_pointer = saved_char;
demand_empty_rest_of_line ();
return;
}
/* Lookup a cpu name in TABLE and return the slot found. Return NULL
if none is found, the caller is responsible for emitting an error
message. If ALLOW_M is non-zero, we allow an initial 'm' on the
cpu name, if it begins with a '6' (possibly skipping an intervening
'c'. We also allow a 'c' in the same place. if NEGATED is
non-zero, we accept a leading 'no-' and *NEGATED is set to true, if
the option is indeed negated. */
static const struct m68k_cpu *
m68k_lookup_cpu (const char *arg, const struct m68k_cpu *table,
int allow_m, int *negated)
{
/* allow negated value? */
if (negated)
{
*negated = 0;
if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-')
{
arg += 3;
*negated = 1;
}
}
/* Remove 'm' or 'mc' prefix from 68k variants. */
if (allow_m)
{
if (arg[0] == 'm')
{
if (arg[1] == '6')
arg += 1;
else if (arg[1] == 'c' && arg[2] == '6')
arg += 2;
}
}
else if (arg[0] == 'c' && arg[1] == '6')
arg += 1;
for (; table->name; table++)
if (!strcmp (arg, table->name))
{
if (table->alias < -1 || table->alias > 1)
as_bad (_("`%s' is deprecated, use `%s'"),
table->name, table[table->alias < 0 ? 1 : -1].name);
return table;
}
return 0;
}
/* Set the cpu, issuing errors if it is unrecognized. */
static int
m68k_set_cpu (char const *name, int allow_m, int silent)
{
const struct m68k_cpu *cpu;
cpu = m68k_lookup_cpu (name, m68k_cpus, allow_m, NULL);
if (!cpu)
{
if (!silent)
as_bad (_("cpu `%s' unrecognized"), name);
return 0;
}
selected_cpu = cpu;
return 1;
}
/* Set the architecture, issuing errors if it is unrecognized. */
static int
m68k_set_arch (char const *name, int allow_m, int silent)
{
const struct m68k_cpu *arch;
arch = m68k_lookup_cpu (name, m68k_archs, allow_m, NULL);
if (!arch)
{
if (!silent)
as_bad (_("architecture `%s' unrecognized"), name);
return 0;
}
selected_arch = arch;
return 1;
}
/* Set the architecture extension, issuing errors if it is
unrecognized, or invalid */
static int
m68k_set_extension (char const *name, int allow_m, int silent)
{
int negated;
const struct m68k_cpu *ext;
ext = m68k_lookup_cpu (name, m68k_extensions, allow_m, &negated);
if (!ext)
{
if (!silent)
as_bad (_("extension `%s' unrecognized"), name);
return 0;
}
if (negated)
not_current_architecture |= (ext->control_regs
? *(unsigned *)ext->control_regs: ext->arch);
else
current_architecture |= ext->arch;
return 1;
}
/* md_parse_option
Invocation line includes a switch not recognized by the base assembler.
*/
const char *md_shortopts = "lSA:m:kQ:V";
struct option md_longopts[] = {
#define OPTION_PIC (OPTION_MD_BASE)
{"pic", no_argument, NULL, OPTION_PIC},
#define OPTION_REGISTER_PREFIX_OPTIONAL (OPTION_MD_BASE + 1)
{"register-prefix-optional", no_argument, NULL,
OPTION_REGISTER_PREFIX_OPTIONAL},
#define OPTION_BITWISE_OR (OPTION_MD_BASE + 2)
{"bitwise-or", no_argument, NULL, OPTION_BITWISE_OR},
#define OPTION_BASE_SIZE_DEFAULT_16 (OPTION_MD_BASE + 3)
{"base-size-default-16", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_16},
#define OPTION_BASE_SIZE_DEFAULT_32 (OPTION_MD_BASE + 4)
{"base-size-default-32", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_32},
#define OPTION_DISP_SIZE_DEFAULT_16 (OPTION_MD_BASE + 5)
{"disp-size-default-16", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_16},
#define OPTION_DISP_SIZE_DEFAULT_32 (OPTION_MD_BASE + 6)
{"disp-size-default-32", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_32},
#define OPTION_PCREL (OPTION_MD_BASE + 7)
{"pcrel", no_argument, NULL, OPTION_PCREL},
{NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);
int
md_parse_option (int c, const char *arg)
{
switch (c)
{
case 'l': /* -l means keep external to 2 bit offset
rather than 16 bit one. */
flag_short_refs = 1;
break;
case 'S': /* -S means that jbsr's always turn into
jsr's. */
flag_long_jumps = 1;
break;
case OPTION_PCREL: /* --pcrel means never turn PC-relative
branches into absolute jumps. */
flag_keep_pcrel = 1;
break;
case OPTION_PIC:
case 'k':
flag_want_pic = 1;
break; /* -pic, Position Independent Code. */
case OPTION_REGISTER_PREFIX_OPTIONAL:
flag_reg_prefix_optional = 1;
reg_prefix_optional_seen = 1;
break;
/* -V: SVR4 argument to print version ID. */
case 'V':
print_version_id ();
break;
/* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
should be emitted or not. FIXME: Not implemented. */
case 'Q':
break;
case OPTION_BITWISE_OR:
{
char *n, *t;
const char *s;
n = XNEWVEC (char, strlen (m68k_comment_chars) + 1);
t = n;
for (s = m68k_comment_chars; *s != '\0'; s++)
if (*s != '|')
*t++ = *s;
*t = '\0';
m68k_comment_chars = n;
}
break;
case OPTION_BASE_SIZE_DEFAULT_16:
m68k_index_width_default = SIZE_WORD;
break;
case OPTION_BASE_SIZE_DEFAULT_32:
m68k_index_width_default = SIZE_LONG;
break;
case OPTION_DISP_SIZE_DEFAULT_16:
m68k_rel32 = 0;
m68k_rel32_from_cmdline = 1;
break;
case OPTION_DISP_SIZE_DEFAULT_32:
m68k_rel32 = 1;
m68k_rel32_from_cmdline = 1;
break;
case 'A':
#if WARN_DEPRECATED
as_tsktsk (_ ("option `-A%s' is deprecated: use `-%s'",
arg, arg));
#endif
/* Intentional fall-through. */
case 'm':
if (!strncmp (arg, "arch=", 5))
m68k_set_arch (arg + 5, 1, 0);
else if (!strncmp (arg, "cpu=", 4))
m68k_set_cpu (arg + 4, 1, 0);
else if (m68k_set_extension (arg, 0, 1))
;
else if (m68k_set_arch (arg, 0, 1))
;
else if (m68k_set_cpu (arg, 0, 1))
;
else
return 0;
break;
default:
return 0;
}
return 1;
}
/* Setup tables from the selected arch and/or cpu */
static void
m68k_init_arch (void)
{
if (not_current_architecture & current_architecture)
{
as_bad (_("architecture features both enabled and disabled"));
not_current_architecture &= ~current_architecture;
}
if (selected_arch)
{
current_architecture |= selected_arch->arch;
control_regs = selected_arch->control_regs;
}
else
current_architecture |= selected_cpu->arch;
current_architecture &= ~not_current_architecture;
if ((current_architecture & (cfloat | m68881)) == (cfloat | m68881))
{
/* Determine which float is really meant. */
if (current_architecture & (m68k_mask & ~m68881))
current_architecture ^= cfloat;
else
current_architecture ^= m68881;
}
if (selected_cpu)
{
control_regs = selected_cpu->control_regs;
if (current_architecture & ~selected_cpu->arch)
{
as_bad (_("selected processor does not have all features of selected architecture"));
current_architecture
= selected_cpu->arch & ~not_current_architecture;
}
}
if ((current_architecture & m68k_mask)
&& (current_architecture & ~m68k_mask))
{
as_bad (_ ("m68k and cf features both selected"));
if (current_architecture & m68k_mask)
current_architecture &= m68k_mask;
else
current_architecture &= ~m68k_mask;
}
/* Permit m68881 specification with all cpus; those that can't work
with a coprocessor could be doing emulation. */
if (current_architecture & m68851)
{
if (current_architecture & m68040)
as_warn (_("68040 and 68851 specified; mmu instructions may assemble incorrectly"));
}
/* What other incompatibilities could we check for? */
if (cpu_of_arch (current_architecture) < m68020
|| arch_coldfire_p (current_architecture))
md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0;
initialized = 1;
}
void
md_show_usage (FILE *stream)
{
const char *default_cpu = TARGET_CPU;
int i;
/* Get the canonical name for the default target CPU. */
if (*default_cpu == 'm')
default_cpu++;
for (i = 0; m68k_cpus[i].name; i++)
{
if (strcasecmp (default_cpu, m68k_cpus[i].name) == 0)
{
while (m68k_cpus[i].alias > 0)
i--;
while (m68k_cpus[i].alias < 0)
i++;
default_cpu = m68k_cpus[i].name;
}
}
fprintf (stream, _("\
-march=<arch> set architecture\n\
-mcpu=<cpu> set cpu [default %s]\n\
"), default_cpu);
for (i = 0; m68k_extensions[i].name; i++)
fprintf (stream, _("\
-m[no-]%-16s enable/disable %s architecture extension\n\
"), m68k_extensions[i].name,
m68k_extensions[i].alias > 0 ? " ColdFire"
: m68k_extensions[i].alias < 0 ? " m68k" : "");
fprintf (stream, _("\
-l use 1 word for refs to undefined symbols [default 2]\n\
-pic, -k generate position independent code\n\
-S turn jbsr into jsr\n\
--pcrel never turn PC-relative branches into absolute jumps\n\
--register-prefix-optional\n\
recognize register names without prefix character\n\
--bitwise-or do not treat `|' as a comment character\n\
--base-size-default-16 base reg without size is 16 bits\n\
--base-size-default-32 base reg without size is 32 bits (default)\n\
--disp-size-default-16 displacement with unknown size is 16 bits\n\
--disp-size-default-32 displacement with unknown size is 32 bits (default)\n\
"));
fprintf (stream, _("Architecture variants are: "));
for (i = 0; m68k_archs[i].name; i++)
{
if (i)
fprintf (stream, " | ");
fprintf (stream, "%s", m68k_archs[i].name);
}
fprintf (stream, "\n");
fprintf (stream, _("Processor variants are: "));
for (i = 0; m68k_cpus[i].name; i++)
{
if (i)
fprintf (stream, " | ");
fprintf (stream, "%s", m68k_cpus[i].name);
}
fprintf (stream, _("\n"));
}
#ifdef TEST2
/* TEST2: Test md_assemble() */
/* Warning, this routine probably doesn't work anymore. */
int
main (void)
{
struct m68k_it the_ins;
char buf[120];
char *cp;
int n;
m68k_ip_begin ();
for (;;)
{
if (!gets (buf) || !*buf)
break;
if (buf[0] == '|' || buf[1] == '.')
continue;
for (cp = buf; *cp; cp++)
if (*cp == '\t')
*cp = ' ';
if (is_label (buf))
continue;
memset (&the_ins, '\0', sizeof (the_ins));
m68k_ip (&the_ins, buf);
if (the_ins.error)
{
printf (_("Error %s in %s\n"), the_ins.error, buf);
}
else
{
printf (_("Opcode(%d.%s): "), the_ins.numo, the_ins.args);
for (n = 0; n < the_ins.numo; n++)
printf (" 0x%x", the_ins.opcode[n] & 0xffff);
printf (" ");
print_the_insn (&the_ins.opcode[0], stdout);
(void) putchar ('\n');
}
for (n = 0; n < strlen (the_ins.args) / 2; n++)
{
if (the_ins.operands[n].error)
{
printf ("op%d Error %s in %s\n", n, the_ins.operands[n].error, buf);
continue;
}
printf ("mode %d, reg %d, ", the_ins.operands[n].mode,
the_ins.operands[n].reg);
if (the_ins.operands[n].b_const)
printf ("Constant: '%.*s', ",
1 + the_ins.operands[n].e_const - the_ins.operands[n].b_const,
the_ins.operands[n].b_const);
printf ("ireg %d, isiz %d, imul %d, ", the_ins.operands[n].ireg,
the_ins.operands[n].isiz, the_ins.operands[n].imul);
if (the_ins.operands[n].b_iadd)
printf ("Iadd: '%.*s',",
1 + the_ins.operands[n].e_iadd - the_ins.operands[n].b_iadd,
the_ins.operands[n].b_iadd);
putchar ('\n');
}
}
m68k_ip_end ();
return 0;
}
int
is_label (char *str)
{
while (*str == ' ')
str++;
while (*str && *str != ' ')
str++;
if (str[-1] == ':' || str[1] == '=')
return 1;
return 0;
}
#endif
/* Possible states for relaxation:
0 0 branch offset byte (bra, etc)
0 1 word
0 2 long
1 0 indexed offsets byte a0@(32,d4:w:1) etc
1 1 word
1 2 long
2 0 two-offset index word-word a0@(32,d4)@(45) etc
2 1 word-long
2 2 long-word
2 3 long-long
*/
/* We have no need to default values of symbols. */
symbolS *
md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
{
return 0;
}
/* Round up a section size to the appropriate boundary. */
valueT
md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size)
{
return size;
}
/* Exactly what point is a PC-relative offset relative TO?
On the 68k, it is relative to the address of the first extension
word. The difference between the addresses of the offset and the
first extension word is stored in fx_pcrel_adjust. */
long
md_pcrel_from (fixS *fixP)
{
int adjust;
adjust = fixP->fx_pcrel_adjust;
if (adjust == 64)
adjust = -1;
return fixP->fx_where + fixP->fx_frag->fr_address - adjust;
}
void
m68k_elf_final_processing (void)
{
unsigned flags = 0;
if (arch_coldfire_fpu (current_architecture))
flags |= EF_M68K_CFV4E;
/* Set file-specific flags if this is a cpu32 processor. */
if (cpu_of_arch (current_architecture) & cpu32)
flags |= EF_M68K_CPU32;
else if (cpu_of_arch (current_architecture) & fido_a)
flags |= EF_M68K_FIDO;
else if ((cpu_of_arch (current_architecture) & m68000up)
&& !(cpu_of_arch (current_architecture) & m68020up))
flags |= EF_M68K_M68000;
if (current_architecture & mcfisa_a)
{
static const unsigned isa_features[][2] =
{
{EF_M68K_CF_ISA_A_NODIV,mcfisa_a},
{EF_M68K_CF_ISA_A, mcfisa_a|mcfhwdiv},
{EF_M68K_CF_ISA_A_PLUS, mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp},
{EF_M68K_CF_ISA_B_NOUSP,mcfisa_a|mcfisa_b|mcfhwdiv},
{EF_M68K_CF_ISA_B, mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp},
{EF_M68K_CF_ISA_C, mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp},
{EF_M68K_CF_ISA_C_NODIV,mcfisa_a|mcfisa_c|mcfusp},
{0,0},
};
static const unsigned mac_features[][2] =
{
{EF_M68K_CF_MAC, mcfmac},
{EF_M68K_CF_EMAC, mcfemac},
{0,0},
};
unsigned ix;
unsigned pattern;
pattern = (current_architecture
& (mcfisa_a|mcfisa_aa|mcfisa_b|mcfisa_c|mcfhwdiv|mcfusp));
for (ix = 0; isa_features[ix][1]; ix++)
{
if (pattern == isa_features[ix][1])
{
flags |= isa_features[ix][0];
break;
}
}
if (!isa_features[ix][1])
{
cf_bad:
as_warn (_("Not a defined coldfire architecture"));
}
else
{
if (current_architecture & cfloat)
flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E;
pattern = current_architecture & (mcfmac|mcfemac);
if (pattern)
{
for (ix = 0; mac_features[ix][1]; ix++)
{
if (pattern == mac_features[ix][1])
{
flags |= mac_features[ix][0];
break;
}
}
if (!mac_features[ix][1])
goto cf_bad;
}
}
}
elf_elfheader (stdoutput)->e_flags |= flags;
}
/* Parse @TLSLDO and return the desired relocation. */
static bfd_reloc_code_real_type
m68k_elf_suffix (char **str_p, expressionS *exp_p)
{
char ident[20];
char *str = *str_p;
char *str2;
int ch;
int len;
if (*str++ != '@')
return BFD_RELOC_UNUSED;
for (ch = *str, str2 = ident;
(str2 < ident + sizeof (ident) - 1
&& (ISALNUM (ch) || ch == '@'));
ch = *++str)
{
*str2++ = ch;
}
*str2 = '\0';
len = str2 - ident;
if (strncmp (ident, "TLSLDO", 6) == 0
&& len == 6)
{
/* Now check for identifier@suffix+constant. */
if (*str == '-' || *str == '+')
{
char *orig_line = input_line_pointer;
expressionS new_exp;
input_line_pointer = str;
expression (&new_exp);
if (new_exp.X_op == O_constant)
{
exp_p->X_add_number += new_exp.X_add_number;
str = input_line_pointer;
}
if (&input_line_pointer != str_p)
input_line_pointer = orig_line;
}
*str_p = str;
return BFD_RELOC_68K_TLS_LDO32;
}
return BFD_RELOC_UNUSED;
}
/* Handles .long <tls_symbol>+0x8000 debug info.
Clobbers input_line_pointer, checks end-of-line.
Adapted from tc-ppc.c:ppc_elf_cons. */
static void
m68k_elf_cons (int nbytes /* 4=.long */)
{
if (is_it_end_of_statement ())
{
demand_empty_rest_of_line ();
return;
}
do
{
expressionS exp;
bfd_reloc_code_real_type reloc;
expression (&exp);
if (exp.X_op == O_symbol
&& *input_line_pointer == '@'
&& (reloc = m68k_elf_suffix (&input_line_pointer,
&exp)) != BFD_RELOC_UNUSED)
{
reloc_howto_type *reloc_howto;
int size;
reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
size = bfd_get_reloc_size (reloc_howto);
if (size > nbytes)
{
as_bad (ngettext ("%s relocations do not fit in %u byte",
"%s relocations do not fit in %u bytes",
nbytes),
reloc_howto->name, nbytes);
}
else
{
char *p;
int offset;
p = frag_more (nbytes);
offset = 0;
if (target_big_endian)
offset = nbytes - size;
fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size,
&exp, 0, reloc);
}
}
else
emit_expr (&exp, (unsigned int) nbytes);
}
while (*input_line_pointer++ == ',');
/* Put terminator back into stream. */
input_line_pointer--;
demand_empty_rest_of_line ();
}
/* Parse a .gnu_attribute directive. */
static void
m68k_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED)
{
int tag = obj_elf_vendor_attribute (OBJ_ATTR_GNU);
/* Check validity of defined m68k tags. */
if (tag == Tag_GNU_M68K_ABI_FP)
{
unsigned int val;
val = bfd_elf_get_obj_attr_int (stdoutput, OBJ_ATTR_GNU, tag);
if (tag == Tag_GNU_M68K_ABI_FP && val > 2)
as_warn (_("unknown .gnu_attribute value"));
}
}
int
tc_m68k_regname_to_dw2regnum (const char *regname)
{
unsigned int regnum;
static const char *const regnames[] =
{
"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
"a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",
"fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7",
"pc"
};
for (regnum = 0; regnum < ARRAY_SIZE (regnames); regnum++)
if (strcmp (regname, regnames[regnum]) == 0)
return regnum;
return -1;
}
void
tc_m68k_frame_initial_instructions (void)
{
static int sp_regno = -1;
if (sp_regno < 0)
sp_regno = tc_m68k_regname_to_dw2regnum ("sp");
cfi_add_CFA_def_cfa (sp_regno, -DWARF2_CIE_DATA_ALIGNMENT);
cfi_add_CFA_offset (DWARF2_DEFAULT_RETURN_COLUMN, DWARF2_CIE_DATA_ALIGNMENT);
}
/* Check and emit error if broken-word handling has failed to fix up a
case-table. This is called from write.c, after doing everything it
knows about how to handle broken words. */
void
tc_m68k_check_adjusted_broken_word (offsetT new_offset, struct broken_word *brokwP)
{
if (new_offset > 32767 || new_offset < -32768)
as_bad_where (brokwP->frag->fr_file, brokwP->frag->fr_line,
_("Adjusted signed .word (%#lx) overflows: `switch'-statement too large."),
(long) new_offset);
}
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