diff options
Diffstat (limited to 'include/opcode')
| -rw-r--r-- | include/opcode/ChangeLog | 4 | ||||
| -rw-r--r-- | include/opcode/mmix.h | 185 |
2 files changed, 189 insertions, 0 deletions
diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog index 583f742..73dd9c6 100644 --- a/include/opcode/ChangeLog +++ b/include/opcode/ChangeLog @@ -1,3 +1,7 @@ +2001-10-30 Hans-Peter Nilsson <hp@bitrange.com> + + * mmix.h: New file. + 2001-10-18 Chris Demetriou <cgd@broadcom.com> * mips.h (OPCODE_IS_MEMBER): Add a no-op term to the end diff --git a/include/opcode/mmix.h b/include/opcode/mmix.h new file mode 100644 index 0000000..825eb0e --- /dev/null +++ b/include/opcode/mmix.h @@ -0,0 +1,185 @@ +/* mmix.h -- Header file for MMIX opcode table + Copyright (C) 2001 Free Software Foundation, Inc. + Written by Hans-Peter Nilsson (hp@bitrange.com) + +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 2, +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. */ + +/* We could have just a char*[] table indexed by the register number, but + that would not allow for synonyms. The table is terminated with an + entry with a NULL name. */ +struct mmix_spec_reg +{ + const char *name; + unsigned int number; +}; + +/* General indication of the type of instruction. */ +enum mmix_insn_type + { + mmix_type_pseudo, + mmix_type_normal, + mmix_type_branch, + mmix_type_condbranch, + mmix_type_memaccess_octa, + mmix_type_memaccess_tetra, + mmix_type_memaccess_wyde, + mmix_type_memaccess_byte, + mmix_type_memaccess_block, + mmix_type_jsr + }; + +/* Type of operands an instruction takes. Use when parsing assembly code + and disassembling. */ +enum mmix_operands_type + { + mmix_operands_none = 0, + + /* All operands are registers: "$X,$Y,$Z". */ + mmix_operands_regs, + + /* "$X,YZ", like SETH. */ + mmix_operands_reg_yz, + + /* The regular "$X,$Y,$Z|Z". + The Z is optional; if only "$X,$Y" is given, then "$X,$Y,0" is + assumed. */ + mmix_operands_regs_z_opt, + + /* The regular "$X,$Y,$Z|Z". */ + mmix_operands_regs_z, + + /* "Address"; only JMP. Zero operands allowed unless GNU syntax. */ + mmix_operands_jmp, + + /* "$X|X,$Y,$Z|Z": PUSHGO; like "3", but X can be expressed as an + integer. */ + mmix_operands_pushgo, + + /* Two registers or a register and a byte, like FLOT, possibly with + rounding: "$X,$Z|Z" or "$X,ROUND_MODE,$Z|Z". */ + mmix_operands_roundregs_z, + + /* "X,YZ", POP. Unless GNU syntax, zero or one operand is allowed. */ + mmix_operands_pop, + + /* Two registers, possibly with rounding: "$X,$Z" or + "$X,ROUND_MODE,$Z". */ + mmix_operands_roundregs, + + /* "XYZ", like SYNC. */ + mmix_operands_sync, + + /* "X,$Y,$Z|Z", like SYNCD. */ + mmix_operands_x_regs_z, + + /* "$X,Y,$Z|Z", like NEG and NEGU. The Y field is optional, default 0. */ + mmix_operands_neg, + + /* "$X,Address, like GETA or branches. */ + mmix_operands_regaddr, + + /* "$X|X,Address, like PUSHJ. */ + mmix_operands_pushj, + + /* "$X,spec_reg"; GET. */ + mmix_operands_get, + + /* "spec_reg,$Z|Z"; PUT. */ + mmix_operands_put, + + /* Two registers, "$X,$Y". */ + mmix_operands_set, + + /* "$X,0"; SAVE. */ + mmix_operands_save, + + /* "0,$Z"; UNSAVE. */ + mmix_operands_unsave, + + /* "X,Y,Z"; like SWYM or TRAP. Zero (or 1 if GNU syntax) to three + operands, interpreted as 0; XYZ; X, YZ and X, Y, Z. */ + mmix_operands_xyz_opt, + + /* Just "Z", like RESUME. Unless GNU syntax, the operand can be omitted + and will then be assumed zero. */ + mmix_operands_resume, + + /* These are specials to handle that pseudo-directives are specified + like ordinary insns when being mmixal-compatible. They signify the + specific pseudo-directive rather than the operands type. */ + + /* LOC. */ + mmix_operands_loc, + + /* PREFIX. */ + mmix_operands_prefix, + + /* BYTE. */ + mmix_operands_byte, + + /* WYDE. */ + mmix_operands_wyde, + + /* TETRA. */ + mmix_operands_tetra, + + /* OCTA. */ + mmix_operands_octa, + + /* LOCAL. */ + mmix_operands_local, + + /* BSPEC. */ + mmix_operands_bspec, + + /* ESPEC. */ + mmix_operands_espec, + }; + +struct mmix_opcode + { + const char *name; + unsigned long match; + unsigned long lose; + enum mmix_operands_type operands; + + /* This is used by the disassembly function. */ + enum mmix_insn_type type; + }; + +/* Declare the actual tables. */ +extern const struct mmix_opcode mmix_opcodes[]; + +/* This one is terminated with an entry with a NULL name. */ +extern const struct mmix_spec_reg mmix_spec_regs[]; + +/* Some insn values we use when padding and synthesizing address loads. */ +#define IMM_OFFSET_BIT 1 +#define COND_INV_BIT 0x8 +#define PRED_INV_BIT 0x10 + +#define PUSHGO_INSN_BYTE 0xbe +#define GO_INSN_BYTE 0x9e +#define SETL_INSN_BYTE 0xe3 +#define INCML_INSN_BYTE 0xe6 +#define INCMH_INSN_BYTE 0xe5 +#define INCH_INSN_BYTE 0xe4 +#define SWYM_INSN_BYTE 0xfd + +/* We can have 256 - 32 (local registers) - 1 ($255 is not allocatable) + global registers. */ +#define MAX_GREGS 223 |