267 lines
9.4 KiB
C
267 lines
9.4 KiB
C
/* i370.h -- Header file for S/390 opcode table
|
||
Copyright 1994, 1995, 1998, 1999, 2000, 2003, 2010
|
||
Free Software Foundation, Inc.
|
||
PowerPC version written by Ian Lance Taylor, Cygnus Support
|
||
Rewritten for i370 ESA/390 support, Linas Vepstas <linas@linas.org>
|
||
|
||
This file is part of GDB, GAS, and the GNU binutils.
|
||
|
||
GDB, GAS, and the GNU binutils are free software; you can redistribute
|
||
them and/or modify them 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.
|
||
|
||
GDB, GAS, and the GNU binutils are distributed in the hope that they
|
||
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 this file; see the file COPYING3. If not, write to the Free
|
||
Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA. */
|
||
|
||
#ifndef I370_H
|
||
#define I370_H
|
||
|
||
/* The opcode table is an array of struct i370_opcode. */
|
||
typedef union
|
||
{
|
||
unsigned int i[2];
|
||
unsigned short s[4];
|
||
unsigned char b[8];
|
||
} i370_insn_t;
|
||
|
||
struct i370_opcode
|
||
{
|
||
/* The opcode name. */
|
||
const char *name;
|
||
|
||
/* the length of the instruction */
|
||
char len;
|
||
|
||
/* The opcode itself. Those bits which will be filled in with
|
||
operands are zeroes. */
|
||
i370_insn_t opcode;
|
||
|
||
/* The opcode mask. This is used by the disassembler. This is a
|
||
mask containing ones indicating those bits which must match the
|
||
opcode field, and zeroes indicating those bits which need not
|
||
match (and are presumably filled in by operands). */
|
||
i370_insn_t mask;
|
||
|
||
/* One bit flags for the opcode. These are used to indicate which
|
||
specific processors support the instructions. The defined values
|
||
are listed below. */
|
||
unsigned long flags;
|
||
|
||
/* An array of operand codes. Each code is an index into the
|
||
operand table. They appear in the order which the operands must
|
||
appear in assembly code, and are terminated by a zero. */
|
||
unsigned char operands[8];
|
||
};
|
||
|
||
/* The table itself is sorted by major opcode number, and is otherwise
|
||
in the order in which the disassembler should consider
|
||
instructions. */
|
||
extern const struct i370_opcode i370_opcodes[];
|
||
extern const int i370_num_opcodes;
|
||
|
||
/* Values defined for the flags field of a struct i370_opcode. */
|
||
|
||
/* Opcode is defined for the original 360 architecture. */
|
||
#define I370_OPCODE_360 (0x01)
|
||
|
||
/* Opcode is defined for the 370 architecture. */
|
||
#define I370_OPCODE_370 (0x02)
|
||
|
||
/* Opcode is defined for the 370-XA architecture. */
|
||
#define I370_OPCODE_370_XA (0x04)
|
||
|
||
/* Opcode is defined for the ESA/370 architecture. */
|
||
#define I370_OPCODE_ESA370 (0x08)
|
||
|
||
/* Opcode is defined for the ESA/390 architecture. */
|
||
#define I370_OPCODE_ESA390 (0x10)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ BFP facility. */
|
||
#define I370_OPCODE_ESA390_BF (0x20)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ branch & set authority facility. */
|
||
#define I370_OPCODE_ESA390_BS (0x40)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ checksum facility. */
|
||
#define I370_OPCODE_ESA390_CK (0x80)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ compare & move extended facility. */
|
||
#define I370_OPCODE_ESA390_CM (0x100)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ flt.pt. support extensions facility. */
|
||
#define I370_OPCODE_ESA390_FX (0x200)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ HFP facility. */
|
||
#define I370_OPCODE_ESA390_HX (0x400)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ immediate & relative facility. */
|
||
#define I370_OPCODE_ESA390_IR (0x800)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ move-inverse facility. */
|
||
#define I370_OPCODE_ESA390_MI (0x1000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ program-call-fast facility. */
|
||
#define I370_OPCODE_ESA390_PC (0x2000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ perform-locked-op facility. */
|
||
#define I370_OPCODE_ESA390_PL (0x4000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ square-root facility. */
|
||
#define I370_OPCODE_ESA390_QR (0x8000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ resume-program facility. */
|
||
#define I370_OPCODE_ESA390_RP (0x10000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ set-address-space-fast facility. */
|
||
#define I370_OPCODE_ESA390_SA (0x20000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ subspace group facility. */
|
||
#define I370_OPCODE_ESA390_SG (0x40000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ string facility. */
|
||
#define I370_OPCODE_ESA390_SR (0x80000)
|
||
|
||
/* Opcode is defined for the ESA/390 w/ trap facility. */
|
||
#define I370_OPCODE_ESA390_TR (0x100000)
|
||
|
||
#define I370_OPCODE_ESA390_SUPERSET (0x1fffff)
|
||
|
||
|
||
/* The operands table is an array of struct i370_operand. */
|
||
|
||
struct i370_operand
|
||
{
|
||
/* The number of bits in the operand. */
|
||
int bits;
|
||
|
||
/* How far the operand is left shifted in the instruction. */
|
||
int shift;
|
||
|
||
/* Insertion function. This is used by the assembler. To insert an
|
||
operand value into an instruction, check this field.
|
||
|
||
If it is NULL, execute
|
||
i |= (op & ((1 << o->bits) - 1)) << o->shift;
|
||
(i is the instruction which we are filling in, o is a pointer to
|
||
this structure, and op is the opcode value; this assumes twos
|
||
complement arithmetic).
|
||
|
||
If this field is not NULL, then simply call it with the
|
||
instruction and the operand value. It will return the new value
|
||
of the instruction. If the ERRMSG argument is not NULL, then if
|
||
the operand value is illegal, *ERRMSG will be set to a warning
|
||
string (the operand will be inserted in any case). If the
|
||
operand value is legal, *ERRMSG will be unchanged (most operands
|
||
can accept any value). */
|
||
i370_insn_t (*insert)
|
||
(i370_insn_t instruction, long op, const char **errmsg);
|
||
|
||
/* Extraction function. This is used by the disassembler. To
|
||
extract this operand type from an instruction, check this field.
|
||
|
||
If it is NULL, compute
|
||
op = ((i) >> o->shift) & ((1 << o->bits) - 1);
|
||
if ((o->flags & I370_OPERAND_SIGNED) != 0
|
||
&& (op & (1 << (o->bits - 1))) != 0)
|
||
op -= 1 << o->bits;
|
||
(i is the instruction, o is a pointer to this structure, and op
|
||
is the result; this assumes twos complement arithmetic).
|
||
|
||
If this field is not NULL, then simply call it with the
|
||
instruction value. It will return the value of the operand. If
|
||
the INVALID argument is not NULL, *INVALID will be set to
|
||
non-zero if this operand type can not actually be extracted from
|
||
this operand (i.e., the instruction does not match). If the
|
||
operand is valid, *INVALID will not be changed. */
|
||
long (*extract) (i370_insn_t instruction, int *invalid);
|
||
|
||
/* One bit syntax flags. */
|
||
unsigned long flags;
|
||
|
||
/* name -- handy for debugging, otherwise pointless */
|
||
char * name;
|
||
};
|
||
|
||
/* Elements in the table are retrieved by indexing with values from
|
||
the operands field of the i370_opcodes table. */
|
||
|
||
extern const struct i370_operand i370_operands[];
|
||
|
||
/* Values defined for the flags field of a struct i370_operand. */
|
||
|
||
/* This operand should be wrapped in parentheses rather than
|
||
separated from the previous by a comma. This is used for S, RS and
|
||
SS form instructions which want their operands to look like
|
||
reg,displacement(basereg) */
|
||
#define I370_OPERAND_SBASE (0x01)
|
||
|
||
/* This operand is a base register. It may or may not appear next
|
||
to an index register, i.e. either of the two forms
|
||
reg,displacement(basereg)
|
||
reg,displacement(index,basereg) */
|
||
#define I370_OPERAND_BASE (0x02)
|
||
|
||
/* This pair of operands should be wrapped in parentheses rather than
|
||
separated from the last by a comma. This is used for the RX form
|
||
instructions which want their operands to look like
|
||
reg,displacement(index,basereg) */
|
||
#define I370_OPERAND_INDEX (0x04)
|
||
|
||
/* This operand names a register. The disassembler uses this to print
|
||
register names with a leading 'r'. */
|
||
#define I370_OPERAND_GPR (0x08)
|
||
|
||
/* This operand names a floating point register. The disassembler
|
||
prints these with a leading 'f'. */
|
||
#define I370_OPERAND_FPR (0x10)
|
||
|
||
/* This operand is a displacement. */
|
||
#define I370_OPERAND_RELATIVE (0x20)
|
||
|
||
/* This operand is a length, such as that in SS form instructions. */
|
||
#define I370_OPERAND_LENGTH (0x40)
|
||
|
||
/* This operand is optional, and is zero if omitted. This is used for
|
||
the optional B2 field in the shift-left, shift-right instructions. The
|
||
assembler must count the number of operands remaining on the line,
|
||
and the number of operands remaining for the opcode, and decide
|
||
whether this operand is present or not. The disassembler should
|
||
print this operand out only if it is not zero. */
|
||
#define I370_OPERAND_OPTIONAL (0x80)
|
||
|
||
|
||
/* Define some misc macros. We keep them with the operands table
|
||
for simplicity. The macro table is an array of struct i370_macro. */
|
||
|
||
struct i370_macro
|
||
{
|
||
/* The macro name. */
|
||
const char *name;
|
||
|
||
/* The number of operands the macro takes. */
|
||
unsigned int operands;
|
||
|
||
/* One bit flags for the opcode. These are used to indicate which
|
||
specific processors support the instructions. The values are the
|
||
same as those for the struct i370_opcode flags field. */
|
||
unsigned long flags;
|
||
|
||
/* A format string to turn the macro into a normal instruction.
|
||
Each %N in the string is replaced with operand number N (zero
|
||
based). */
|
||
const char *format;
|
||
};
|
||
|
||
extern const struct i370_macro i370_macros[];
|
||
extern const int i370_num_macros;
|
||
|
||
|
||
#endif /* I370_H */
|