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Diffstat (limited to 'include/opcode/i370.h')
| -rw-r--r-- | include/opcode/i370.h | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/include/opcode/i370.h b/include/opcode/i370.h new file mode 100644 index 000000000..f2049e741 --- /dev/null +++ b/include/opcode/i370.h @@ -0,0 +1,265 @@ +/* i370.h -- Header file for S/390 opcode table + Copyright 1994, 95, 98, 99, 2000 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 +1, 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 COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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) PARAMS ((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) PARAMS ((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 */ |