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/* m68k-parse.h -- header file for m68k assembler
Copyright (C) 1987, 91, 92, 93, 94, 1995 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 2, 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, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#ifndef M68K_PARSE_H
#define M68K_PARSE_H
/* This header file defines things which are shared between the
operand parser in m68k.y and the m68k assembler proper in
tc-m68k.c. */
/* The various m68k registers. */
/* DATA and ADDR have to be contiguous, so that reg-DATA gives
0-7==data reg, 8-15==addr reg for operands that take both types.
We don't use forms like "ADDR0 = ADDR" here because this file is
likely to be used on an Apollo, and the broken Apollo compiler
gives an `undefined variable' error if we do that, according to
troy@cbme.unsw.edu.au. */
#define DATA DATA0
#define ADDR ADDR0
#define SP ADDR7
#define BAD BAD0
#define BAC BAC0
enum m68k_register
{
DATA0 = 1, /* 1- 8 == data registers 0-7 */
DATA1,
DATA2,
DATA3,
DATA4,
DATA5,
DATA6,
DATA7,
ADDR0,
ADDR1,
ADDR2,
ADDR3,
ADDR4,
ADDR5,
ADDR6,
ADDR7,
FP0, /* Eight FP registers */
FP1,
FP2,
FP3,
FP4,
FP5,
FP6,
FP7,
COP0, /* Co-processor #0-#7 */
COP1,
COP2,
COP3,
COP4,
COP5,
COP6,
COP7,
PC, /* Program counter */
ZPC, /* Hack for Program space, but 0 addressing */
SR, /* Status Reg */
CCR, /* Condition code Reg */
/* These have to be grouped together for the movec instruction to work. */
USP, /* User Stack Pointer */
ISP, /* Interrupt stack pointer */
SFC,
DFC,
CACR,
VBR,
CAAR,
MSP,
ITT0,
ITT1,
DTT0,
DTT1,
MMUSR,
TC,
SRP,
URP,
BUSCR, /* 68060 added these */
PCR,
ROMBAR, /* mcf5200 added these */
RAMBAR0,
RAMBAR1,
MBAR,
#define last_movec_reg MBAR
/* end of movec ordering constraints */
FPI,
FPS,
FPC,
DRP, /* 68851 or 68030 MMU regs */
CRP,
CAL,
VAL,
SCC,
AC,
BAD0,
BAD1,
BAD2,
BAD3,
BAD4,
BAD5,
BAD6,
BAD7,
BAC0,
BAC1,
BAC2,
BAC3,
BAC4,
BAC5,
BAC6,
BAC7,
PSR, /* aka MMUSR on 68030 (but not MMUSR on 68040)
and ACUSR on 68ec030 */
PCSR,
IC, /* instruction cache token */
DC, /* data cache token */
NC, /* no cache token */
BC, /* both caches token */
TT0, /* 68030 access control unit regs */
TT1,
ZDATA0, /* suppressed data registers. */
ZDATA1,
ZDATA2,
ZDATA3,
ZDATA4,
ZDATA5,
ZDATA6,
ZDATA7,
ZADDR0, /* suppressed address registers. */
ZADDR1,
ZADDR2,
ZADDR3,
ZADDR4,
ZADDR5,
ZADDR6,
ZADDR7,
};
/* Size information. */
enum m68k_size
{
/* Unspecified. */
SIZE_UNSPEC,
/* Byte. */
SIZE_BYTE,
/* Word (2 bytes). */
SIZE_WORD,
/* Longword (4 bytes). */
SIZE_LONG
};
/* The structure used to hold information about an index register. */
struct m68k_indexreg
{
/* The index register itself. */
enum m68k_register reg;
/* The size to use. */
enum m68k_size size;
/* The value to scale by. */
int scale;
};
#ifdef OBJ_ELF
/* The type of a PIC expression. */
enum pic_relocation
{
pic_none, /* not pic */
pic_plt_pcrel, /* @PLTPC */
pic_got_pcrel, /* @GOTPC */
pic_plt_off, /* @PLT */
pic_got_off /* @GOT */
};
#endif
/* The structure used to hold information about an expression. */
struct m68k_exp
{
/* The size to use. */
enum m68k_size size;
#ifdef OBJ_ELF
/* The type of pic relocation if any. */
enum pic_relocation pic_reloc;
#endif
/* The expression itself. */
expressionS exp;
};
/* The operand modes. */
enum m68k_operand_type
{
IMMED = 1,
ABSL,
DREG,
AREG,
FPREG,
CONTROL,
AINDR,
AINC,
ADEC,
DISP,
BASE,
POST,
PRE,
REGLST
};
/* The structure used to hold a parsed operand. */
struct m68k_op
{
/* The type of operand. */
enum m68k_operand_type mode;
/* The main register. */
enum m68k_register reg;
/* The register mask for mode REGLST. */
unsigned long mask;
/* An error message. */
const char *error;
/* The index register. */
struct m68k_indexreg index;
/* The displacement. */
struct m68k_exp disp;
/* The outer displacement. */
struct m68k_exp odisp;
};
#endif /* ! defined (M68K_PARSE_H) */
/* The parsing function. */
extern int m68k_ip_op PARAMS ((char *, struct m68k_op *));
/* Whether register prefixes are optional. */
extern int flag_reg_prefix_optional;