266 lines
9.4 KiB
C
266 lines
9.4 KiB
C
/* i370.h -- Header file for S/390 opcode table
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Copyright (C) 1994-2014 Free Software Foundation, Inc.
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PowerPC version written by Ian Lance Taylor, Cygnus Support
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Rewritten for i370 ESA/390 support, Linas Vepstas <linas@linas.org>
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This file is part of GDB, GAS, and the GNU binutils.
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GDB, GAS, and the GNU binutils are free software; you can redistribute
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them and/or modify them under the terms of the GNU General Public
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License as published by the Free Software Foundation; either version 3,
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or (at your option) any later version.
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GDB, GAS, and the GNU binutils are distributed in the hope that they
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will be useful, but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this file; see the file COPYING3. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef I370_H
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#define I370_H
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/* The opcode table is an array of struct i370_opcode. */
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typedef union
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{
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unsigned int i[2];
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unsigned short s[4];
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unsigned char b[8];
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} i370_insn_t;
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struct i370_opcode
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{
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/* The opcode name. */
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const char *name;
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/* the length of the instruction */
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char len;
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/* The opcode itself. Those bits which will be filled in with
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operands are zeroes. */
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i370_insn_t opcode;
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/* The opcode mask. This is used by the disassembler. This is a
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mask containing ones indicating those bits which must match the
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opcode field, and zeroes indicating those bits which need not
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match (and are presumably filled in by operands). */
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i370_insn_t mask;
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/* One bit flags for the opcode. These are used to indicate which
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specific processors support the instructions. The defined values
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are listed below. */
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unsigned long flags;
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/* An array of operand codes. Each code is an index into the
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operand table. They appear in the order which the operands must
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appear in assembly code, and are terminated by a zero. */
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unsigned char operands[8];
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};
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/* The table itself is sorted by major opcode number, and is otherwise
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in the order in which the disassembler should consider
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instructions. */
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extern const struct i370_opcode i370_opcodes[];
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extern const int i370_num_opcodes;
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/* Values defined for the flags field of a struct i370_opcode. */
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/* Opcode is defined for the original 360 architecture. */
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#define I370_OPCODE_360 (0x01)
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/* Opcode is defined for the 370 architecture. */
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#define I370_OPCODE_370 (0x02)
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/* Opcode is defined for the 370-XA architecture. */
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#define I370_OPCODE_370_XA (0x04)
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/* Opcode is defined for the ESA/370 architecture. */
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#define I370_OPCODE_ESA370 (0x08)
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/* Opcode is defined for the ESA/390 architecture. */
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#define I370_OPCODE_ESA390 (0x10)
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/* Opcode is defined for the ESA/390 w/ BFP facility. */
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#define I370_OPCODE_ESA390_BF (0x20)
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/* Opcode is defined for the ESA/390 w/ branch & set authority facility. */
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#define I370_OPCODE_ESA390_BS (0x40)
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/* Opcode is defined for the ESA/390 w/ checksum facility. */
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#define I370_OPCODE_ESA390_CK (0x80)
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/* Opcode is defined for the ESA/390 w/ compare & move extended facility. */
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#define I370_OPCODE_ESA390_CM (0x100)
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/* Opcode is defined for the ESA/390 w/ flt.pt. support extensions facility. */
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#define I370_OPCODE_ESA390_FX (0x200)
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/* Opcode is defined for the ESA/390 w/ HFP facility. */
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#define I370_OPCODE_ESA390_HX (0x400)
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/* Opcode is defined for the ESA/390 w/ immediate & relative facility. */
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#define I370_OPCODE_ESA390_IR (0x800)
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/* Opcode is defined for the ESA/390 w/ move-inverse facility. */
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#define I370_OPCODE_ESA390_MI (0x1000)
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/* Opcode is defined for the ESA/390 w/ program-call-fast facility. */
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#define I370_OPCODE_ESA390_PC (0x2000)
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/* Opcode is defined for the ESA/390 w/ perform-locked-op facility. */
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#define I370_OPCODE_ESA390_PL (0x4000)
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/* Opcode is defined for the ESA/390 w/ square-root facility. */
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#define I370_OPCODE_ESA390_QR (0x8000)
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/* Opcode is defined for the ESA/390 w/ resume-program facility. */
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#define I370_OPCODE_ESA390_RP (0x10000)
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/* Opcode is defined for the ESA/390 w/ set-address-space-fast facility. */
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#define I370_OPCODE_ESA390_SA (0x20000)
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/* Opcode is defined for the ESA/390 w/ subspace group facility. */
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#define I370_OPCODE_ESA390_SG (0x40000)
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/* Opcode is defined for the ESA/390 w/ string facility. */
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#define I370_OPCODE_ESA390_SR (0x80000)
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/* Opcode is defined for the ESA/390 w/ trap facility. */
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#define I370_OPCODE_ESA390_TR (0x100000)
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#define I370_OPCODE_ESA390_SUPERSET (0x1fffff)
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/* The operands table is an array of struct i370_operand. */
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struct i370_operand
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{
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/* The number of bits in the operand. */
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int bits;
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/* How far the operand is left shifted in the instruction. */
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int shift;
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/* Insertion function. This is used by the assembler. To insert an
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operand value into an instruction, check this field.
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If it is NULL, execute
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i |= (op & ((1 << o->bits) - 1)) << o->shift;
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(i is the instruction which we are filling in, o is a pointer to
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this structure, and op is the opcode value; this assumes twos
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complement arithmetic).
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If this field is not NULL, then simply call it with the
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instruction and the operand value. It will return the new value
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of the instruction. If the ERRMSG argument is not NULL, then if
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the operand value is illegal, *ERRMSG will be set to a warning
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string (the operand will be inserted in any case). If the
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operand value is legal, *ERRMSG will be unchanged (most operands
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can accept any value). */
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i370_insn_t (*insert)
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(i370_insn_t instruction, long op, const char **errmsg);
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/* Extraction function. This is used by the disassembler. To
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extract this operand type from an instruction, check this field.
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If it is NULL, compute
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op = ((i) >> o->shift) & ((1 << o->bits) - 1);
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if ((o->flags & I370_OPERAND_SIGNED) != 0
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&& (op & (1 << (o->bits - 1))) != 0)
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op -= 1 << o->bits;
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(i is the instruction, o is a pointer to this structure, and op
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is the result; this assumes twos complement arithmetic).
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If this field is not NULL, then simply call it with the
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instruction value. It will return the value of the operand. If
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the INVALID argument is not NULL, *INVALID will be set to
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non-zero if this operand type can not actually be extracted from
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this operand (i.e., the instruction does not match). If the
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operand is valid, *INVALID will not be changed. */
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long (*extract) (i370_insn_t instruction, int *invalid);
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/* One bit syntax flags. */
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unsigned long flags;
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/* name -- handy for debugging, otherwise pointless */
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char * name;
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};
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/* Elements in the table are retrieved by indexing with values from
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the operands field of the i370_opcodes table. */
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extern const struct i370_operand i370_operands[];
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/* Values defined for the flags field of a struct i370_operand. */
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/* This operand should be wrapped in parentheses rather than
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separated from the previous by a comma. This is used for S, RS and
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SS form instructions which want their operands to look like
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reg,displacement(basereg) */
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#define I370_OPERAND_SBASE (0x01)
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/* This operand is a base register. It may or may not appear next
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to an index register, i.e. either of the two forms
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reg,displacement(basereg)
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reg,displacement(index,basereg) */
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#define I370_OPERAND_BASE (0x02)
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/* This pair of operands should be wrapped in parentheses rather than
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separated from the last by a comma. This is used for the RX form
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instructions which want their operands to look like
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reg,displacement(index,basereg) */
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#define I370_OPERAND_INDEX (0x04)
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/* This operand names a register. The disassembler uses this to print
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register names with a leading 'r'. */
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#define I370_OPERAND_GPR (0x08)
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/* This operand names a floating point register. The disassembler
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prints these with a leading 'f'. */
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#define I370_OPERAND_FPR (0x10)
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/* This operand is a displacement. */
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#define I370_OPERAND_RELATIVE (0x20)
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/* This operand is a length, such as that in SS form instructions. */
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#define I370_OPERAND_LENGTH (0x40)
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/* This operand is optional, and is zero if omitted. This is used for
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the optional B2 field in the shift-left, shift-right instructions. The
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assembler must count the number of operands remaining on the line,
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and the number of operands remaining for the opcode, and decide
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whether this operand is present or not. The disassembler should
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print this operand out only if it is not zero. */
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#define I370_OPERAND_OPTIONAL (0x80)
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/* Define some misc macros. We keep them with the operands table
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for simplicity. The macro table is an array of struct i370_macro. */
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struct i370_macro
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{
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/* The macro name. */
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const char *name;
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/* The number of operands the macro takes. */
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unsigned int operands;
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/* One bit flags for the opcode. These are used to indicate which
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specific processors support the instructions. The values are the
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same as those for the struct i370_opcode flags field. */
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unsigned long flags;
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/* A format string to turn the macro into a normal instruction.
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Each %N in the string is replaced with operand number N (zero
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based). */
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const char *format;
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};
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extern const struct i370_macro i370_macros[];
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extern const int i370_num_macros;
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#endif /* I370_H */
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