| /* Table of opcodes for the DLX microprocess. | |
| Copyright (C) 2002-2023 Free Software Foundation, Inc. | |
| This file is part of GDB and GAS. | |
| This program is free software; you can redistribute it and/or modify | |
| it under the terms of the GNU General Public License as published by | |
| the Free Software Foundation; either version 3 of the License, or | |
| (at your option) any later version. | |
| This program is distributed in the hope that it 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 program; if not, write to the Free Software | |
| Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
| MA 02110-1301, USA. | |
| Initially created by Kuang Hwa Lin, 2002. */ | |
| /* Following are the function codes for the Special OP (ALU). */ | |
| #define ALUOP 0x00000000 | |
| #define SPECIALOP 0x00000000 | |
| #define NOPF 0x00000000 | |
| #define SLLF 0x00000004 | |
| #define SRLF 0x00000006 | |
| #define SRAF 0x00000007 | |
| #define SEQUF 0x00000010 | |
| #define SNEUF 0x00000011 | |
| #define SLTUF 0x00000012 | |
| #define SGTUF 0x00000013 | |
| #define SLEUF 0x00000014 | |
| #define SGEUF 0x00000015 | |
| #define ADDF 0x00000020 | |
| #define ADDUF 0x00000021 | |
| #define SUBF 0x00000022 | |
| #define SUBUF 0x00000023 | |
| #define ANDF 0x00000024 | |
| #define ORF 0x00000025 | |
| #define XORF 0x00000026 | |
| #define SEQF 0x00000028 | |
| #define SNEF 0x00000029 | |
| #define SLTF 0x0000002A | |
| #define SGTF 0x0000002B | |
| #define SLEF 0x0000002C | |
| #define SGEF 0x0000002D | |
| /* Following special functions was not mentioned in the | |
| Hennessy's book but was implemented in the RTL. */ | |
| #define MVTSF 0x00000030 | |
| #define MVFSF 0x00000031 | |
| #define BSWAPF 0x00000032 | |
| #define LUTF 0x00000033 | |
| /* Following special functions was mentioned in the | |
| Hennessy's book but was not implemented in the RTL. */ | |
| #define MULTF 0x00000005 | |
| #define MULTUF 0x00000006 | |
| #define DIVF 0x00000007 | |
| #define DIVUF 0x00000008 | |
| /* Following are the rest of the OPcodes: | |
| JOP = (0x002 << 26), JALOP = (0x003 << 26), BEQOP = (0x004 << 26), BNEOP = (0x005 << 26) | |
| ADDIOP = (0x008 << 26), ADDUIOP= (0x009 << 26), SUBIOP = (0x00A << 26), SUBUIOP= (0x00B << 26) | |
| ANDIOP = (0x00C << 26), ORIOP = (0x00D << 26), XORIOP = (0x00E << 26), LHIOP = (0x00F << 26) | |
| RFEOP = (0x010 << 26), TRAPOP = (0x011 << 26), JROP = (0x012 << 26), JALROP = (0x013 << 26) | |
| BREAKOP= (0x014 << 26) | |
| SEQIOP = (0x018 << 26), SNEIOP = (0x019 << 26), SLTIOP = (0x01A << 26), SGTIOP = (0x01B << 26) | |
| SLEIOP = (0x01C << 26), SGEIOP = (0x01D << 26) | |
| LBOP = (0x020 << 26), LHOP = (0x021 << 26), LWOP = (0x023 << 26), LBUOP = (0x024 << 26) | |
| LHUOP = (0x025 << 26), SBOP = (0x028 << 26), SHOP = (0x029 << 26), SWOP = (0x02B << 26) | |
| LSBUOP = (0x026 << 26), LSHU = (0x027 << 26), LSW = (0x02C << 26), | |
| SEQUIOP= (0x030 << 26), SNEUIOP= (0x031 << 26), SLTUIOP= (0x032 << 26), SGTUIOP= (0x033 << 26) | |
| SLEUIOP= (0x034 << 26), SGEUIOP= (0x035 << 26) | |
| SLLIOP = (0x036 << 26), SRLIOP = (0x037 << 26), SRAIOP = (0x038 << 26). */ | |
| #define JOP 0x08000000 | |
| #define JALOP 0x0c000000 | |
| #define BEQOP 0x10000000 | |
| #define BNEOP 0x14000000 | |
| #define ADDIOP 0x20000000 | |
| #define ADDUIOP 0x24000000 | |
| #define SUBIOP 0x28000000 | |
| #define SUBUIOP 0x2c000000 | |
| #define ANDIOP 0x30000000 | |
| #define ORIOP 0x34000000 | |
| #define XORIOP 0x38000000 | |
| #define LHIOP 0x3c000000 | |
| #define RFEOP 0x40000000 | |
| #define TRAPOP 0x44000000 | |
| #define JROP 0x48000000 | |
| #define JALROP 0x4c000000 | |
| #define BREAKOP 0x50000000 | |
| #define SEQIOP 0x60000000 | |
| #define SNEIOP 0x64000000 | |
| #define SLTIOP 0x68000000 | |
| #define SGTIOP 0x6c000000 | |
| #define SLEIOP 0x70000000 | |
| #define SGEIOP 0x74000000 | |
| #define LBOP 0x80000000 | |
| #define LHOP 0x84000000 | |
| #define LWOP 0x8c000000 | |
| #define LBUOP 0x90000000 | |
| #define LHUOP 0x94000000 | |
| #define LDSTBU | |
| #define LDSTHU | |
| #define SBOP 0xa0000000 | |
| #define SHOP 0xa4000000 | |
| #define SWOP 0xac000000 | |
| #define LDST | |
| #define SEQUIOP 0xc0000000 | |
| #define SNEUIOP 0xc4000000 | |
| #define SLTUIOP 0xc8000000 | |
| #define SGTUIOP 0xcc000000 | |
| #define SLEUIOP 0xd0000000 | |
| #define SGEUIOP 0xd4000000 | |
| #define SLLIOP 0xd8000000 | |
| #define SRLIOP 0xdc000000 | |
| #define SRAIOP 0xe0000000 | |
| /* Following 3 ops was added to provide the MP atonmic operation. */ | |
| #define LSBUOP 0x98000000 | |
| #define LSHUOP 0x9c000000 | |
| #define LSWOP 0xb0000000 | |
| /* Following opcode was defined in the Hennessy's book as | |
| "normal" opcode but was implemented in the RTL as special | |
| functions. */ | |
| #if 0 | |
| #define MVTSOP 0x50000000 | |
| #define MVFSOP 0x54000000 | |
| #endif | |
| struct dlx_opcode | |
| { | |
| /* Name of the instruction. */ | |
| const char *name; | |
| /* Opcode word. */ | |
| unsigned long opcode; | |
| /* A string of characters which describe the operands. | |
| Valid characters are: | |
| , Itself. The character appears in the assembly code. | |
| a rs1 The register number is in bits 21-25 of the instruction. | |
| b rs2/rd The register number is in bits 16-20 of the instruction. | |
| c rd. The register number is in bits 11-15 of the instruction. | |
| f FUNC bits 0-10 of the instruction. | |
| i An immediate operand is in bits 0-16 of the instruction. 0 extended | |
| I An immediate operand is in bits 0-16 of the instruction. sign extended | |
| d An 16 bit PC relative displacement. | |
| D An immediate operand is in bits 0-25 of the instruction. | |
| N No opperands needed, for nops. | |
| P it can be a register or a 16 bit operand. */ | |
| const char *args; | |
| }; | |
| static const struct dlx_opcode dlx_opcodes[] = | |
| { | |
| /* Arithmetic and Logic R-TYPE instructions. */ | |
| { "nop", (ALUOP|NOPF), "N" }, /* NOP */ | |
| { "add", (ALUOP|ADDF), "c,a,b" }, /* Add */ | |
| { "addu", (ALUOP|ADDUF), "c,a,b" }, /* Add Unsigned */ | |
| { "sub", (ALUOP|SUBF), "c,a,b" }, /* SUB */ | |
| { "subu", (ALUOP|SUBUF), "c,a,b" }, /* Sub Unsigned */ | |
| { "mult", (ALUOP|MULTF), "c,a,b" }, /* MULTIPLY */ | |
| { "multu", (ALUOP|MULTUF), "c,a,b" }, /* MULTIPLY Unsigned */ | |
| { "div", (ALUOP|DIVF), "c,a,b" }, /* DIVIDE */ | |
| { "divu", (ALUOP|DIVUF), "c,a,b" }, /* DIVIDE Unsigned */ | |
| { "and", (ALUOP|ANDF), "c,a,b" }, /* AND */ | |
| { "or", (ALUOP|ORF), "c,a,b" }, /* OR */ | |
| { "xor", (ALUOP|XORF), "c,a,b" }, /* Exclusive OR */ | |
| { "sll", (ALUOP|SLLF), "c,a,b" }, /* SHIFT LEFT LOGICAL */ | |
| { "sra", (ALUOP|SRAF), "c,a,b" }, /* SHIFT RIGHT ARITHMETIC */ | |
| { "srl", (ALUOP|SRLF), "c,a,b" }, /* SHIFT RIGHT LOGICAL */ | |
| { "seq", (ALUOP|SEQF), "c,a,b" }, /* Set if equal */ | |
| { "sne", (ALUOP|SNEF), "c,a,b" }, /* Set if not equal */ | |
| { "slt", (ALUOP|SLTF), "c,a,b" }, /* Set if less */ | |
| { "sgt", (ALUOP|SGTF), "c,a,b" }, /* Set if greater */ | |
| { "sle", (ALUOP|SLEF), "c,a,b" }, /* Set if less or equal */ | |
| { "sge", (ALUOP|SGEF), "c,a,b" }, /* Set if greater or equal */ | |
| { "sequ", (ALUOP|SEQUF), "c,a,b" }, /* Set if equal unsigned */ | |
| { "sneu", (ALUOP|SNEUF), "c,a,b" }, /* Set if not equal unsigned */ | |
| { "sltu", (ALUOP|SLTUF), "c,a,b" }, /* Set if less unsigned */ | |
| { "sgtu", (ALUOP|SGTUF), "c,a,b" }, /* Set if greater unsigned */ | |
| { "sleu", (ALUOP|SLEUF), "c,a,b" }, /* Set if less or equal unsigned*/ | |
| { "sgeu", (ALUOP|SGEUF), "c,a,b" }, /* Set if greater or equal */ | |
| { "mvts", (ALUOP|MVTSF), "c,a" }, /* Move to special register */ | |
| { "mvfs", (ALUOP|MVFSF), "c,a" }, /* Move from special register */ | |
| { "bswap", (ALUOP|BSWAPF), "c,a,b" }, /* ??? Was not documented */ | |
| { "lut", (ALUOP|LUTF), "c,a,b" }, /* ????? same as above */ | |
| /* Arithmetic and Logical Immediate I-TYPE instructions. */ | |
| { "addi", ADDIOP, "b,a,I" }, /* Add Immediate */ | |
| { "addui", ADDUIOP, "b,a,i" }, /* Add Usigned Immediate */ | |
| { "subi", SUBIOP, "b,a,I" }, /* Sub Immediate */ | |
| { "subui", SUBUIOP, "b,a,i" }, /* Sub Unsigned Immedated */ | |
| { "andi", ANDIOP, "b,a,i" }, /* AND Immediate */ | |
| { "ori", ORIOP, "b,a,i" }, /* OR Immediate */ | |
| { "xori", XORIOP, "b,a,i" }, /* Exclusive OR Immediate */ | |
| { "slli", SLLIOP, "b,a,i" }, /* SHIFT LEFT LOCICAL Immediate */ | |
| { "srai", SRAIOP, "b,a,i" }, /* SHIFT RIGHT ARITH. Immediate */ | |
| { "srli", SRLIOP, "b,a,i" }, /* SHIFT RIGHT LOGICAL Immediate*/ | |
| { "seqi", SEQIOP, "b,a,i" }, /* Set if equal */ | |
| { "snei", SNEIOP, "b,a,i" }, /* Set if not equal */ | |
| { "slti", SLTIOP, "b,a,i" }, /* Set if less */ | |
| { "sgti", SGTIOP, "b,a,i" }, /* Set if greater */ | |
| { "slei", SLEIOP, "b,a,i" }, /* Set if less or equal */ | |
| { "sgei", SGEIOP, "b,a,i" }, /* Set if greater or equal */ | |
| { "sequi", SEQUIOP, "b,a,i" }, /* Set if equal */ | |
| { "sneui", SNEUIOP, "b,a,i" }, /* Set if not equal */ | |
| { "sltui", SLTUIOP, "b,a,i" }, /* Set if less */ | |
| { "sgtui", SGTUIOP, "b,a,i" }, /* Set if greater */ | |
| { "sleui", SLEUIOP, "b,a,i" }, /* Set if less or equal */ | |
| { "sgeui", SGEUIOP, "b,a,i" }, /* Set if greater or equal */ | |
| /* Macros for I type instructions. */ | |
| { "mov", ADDIOP, "b,P" }, /* a move macro */ | |
| { "movu", ADDUIOP, "b,P" }, /* a move macro, unsigned */ | |
| #if 0 | |
| /* Move special. */ | |
| { "mvts", MVTSOP, "b,a" }, /* Move From Integer to Special */ | |
| { "mvfs", MVFSOP, "b,a" }, /* Move From Special to Integer */ | |
| #endif | |
| /* Load high Immediate I-TYPE instruction. */ | |
| { "lhi", LHIOP, "b,i" }, /* Load High Immediate */ | |
| { "lui", LHIOP, "b,i" }, /* Load High Immediate */ | |
| { "sethi", LHIOP, "b,i" }, /* Load High Immediate */ | |
| /* LOAD/STORE BYTE 8 bits I-TYPE. */ | |
| { "lb", LBOP, "b,a,I" }, /* Load Byte */ | |
| { "lbu", LBUOP, "b,a,I" }, /* Load Byte Unsigned */ | |
| { "ldstbu", LSBUOP, "b,a,I" }, /* Load store Byte Unsigned */ | |
| { "sb", SBOP, "b,a,I" }, /* Store Byte */ | |
| /* LOAD/STORE HALFWORD 16 bits. */ | |
| { "lh", LHOP, "b,a,I" }, /* Load Halfword */ | |
| { "lhu", LHUOP, "b,a,I" }, /* Load Halfword Unsigned */ | |
| { "ldsthu", LSHUOP, "b,a,I" }, /* Load Store Halfword Unsigned */ | |
| { "sh", SHOP, "b,a,I" }, /* Store Halfword */ | |
| /* LOAD/STORE WORD 32 bits. */ | |
| { "lw", LWOP, "b,a,I" }, /* Load Word */ | |
| { "sw", SWOP, "b,a,I" }, /* Store Word */ | |
| { "ldstw", LSWOP, "b,a,I" }, /* Load Store Word */ | |
| /* Branch PC-relative, 16 bits offset. */ | |
| { "beqz", BEQOP, "a,d" }, /* Branch if a == 0 */ | |
| { "bnez", BNEOP, "a,d" }, /* Branch if a != 0 */ | |
| { "beq", BEQOP, "a,d" }, /* Branch if a == 0 */ | |
| { "bne", BNEOP, "a,d" }, /* Branch if a != 0 */ | |
| /* Jumps Trap and RFE J-TYPE. */ | |
| { "j", JOP, "D" }, /* Jump, PC-relative 26 bits */ | |
| { "jal", JALOP, "D" }, /* JAL, PC-relative 26 bits */ | |
| { "break", BREAKOP, "D" }, /* break to OS */ | |
| { "trap" , TRAPOP, "D" }, /* TRAP to OS */ | |
| { "rfe", RFEOP, "N" }, /* Return From Exception */ | |
| /* Macros. */ | |
| { "call", JOP, "D" }, /* Jump, PC-relative 26 bits */ | |
| /* Jumps Trap and RFE I-TYPE. */ | |
| { "jr", JROP, "a" }, /* Jump Register, Abs (32 bits) */ | |
| { "jalr", JALROP, "a" }, /* JALR, Abs (32 bits) */ | |
| /* Macros. */ | |
| { "retr", JROP, "a" }, /* Jump Register, Abs (32 bits) */ | |
| { "", 0x0, "" } /* Dummy entry, not included in NUM_OPCODES. | |
| This lets code examine entry i + 1 without | |
| checking if we've run off the end of the table. */ | |
| }; | |
| const unsigned int num_dlx_opcodes = (((sizeof dlx_opcodes) / (sizeof dlx_opcodes[0])) - 1); |