| /* i370.h -- Header file for S/390 opcode table |
| Copyright (C) 1994-2016 Free Software Foundation, Inc. |
| PowerPC version written by Ian Lance Taylor, Cygnus Support |
| Rewritten for i370 ESA/390 support, Linas Vepstas <[email protected]> |
| |
| 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 */ |
