| /* mips.h. Mips opcode list for GDB, the GNU debugger. |
| Copyright 1993, 94, 95, 96, 1997 Free Software Foundation, Inc. |
| Contributed by Ralph Campbell and OSF |
| Commented and modified by Ian Lance Taylor, Cygnus Support |
| |
| 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 _MIPS_H_ |
| #define _MIPS_H_ |
| |
| /* These are bit masks and shift counts to use to access the various |
| fields of an instruction. To retrieve the X field of an |
| instruction, use the expression |
| (i >> OP_SH_X) & OP_MASK_X |
| To set the same field (to j), use |
| i = (i &~ (OP_MASK_X << OP_SH_X)) | (j << OP_SH_X) |
| |
| Make sure you use fields that are appropriate for the instruction, |
| of course. |
| |
| The 'i' format uses OP, RS, RT and IMMEDIATE. |
| |
| The 'j' format uses OP and TARGET. |
| |
| The 'r' format uses OP, RS, RT, RD, SHAMT and FUNCT. |
| |
| The 'b' format uses OP, RS, RT and DELTA. |
| |
| The floating point 'i' format uses OP, RS, RT and IMMEDIATE. |
| |
| The floating point 'r' format uses OP, FMT, FT, FS, FD and FUNCT. |
| |
| A breakpoint instruction uses OP, CODE and SPEC (10 bits of the |
| breakpoint instruction are not defined; Kane says the breakpoint |
| code field in BREAK is 20 bits; yet MIPS assemblers and debuggers |
| only use ten bits). An optional two-operand form of break/sdbbp |
| allows the lower ten bits to be set too. |
| |
| The syscall instruction uses SYSCALL. |
| |
| The general coprocessor instructions use COPZ. */ |
| |
| #define OP_MASK_OP 0x3f |
| #define OP_SH_OP 26 |
| #define OP_MASK_RS 0x1f |
| #define OP_SH_RS 21 |
| #define OP_MASK_FR 0x1f |
| #define OP_SH_FR 21 |
| #define OP_MASK_FMT 0x1f |
| #define OP_SH_FMT 21 |
| #define OP_MASK_BCC 0x7 |
| #define OP_SH_BCC 18 |
| #define OP_MASK_CODE 0x3ff |
| #define OP_SH_CODE 16 |
| #define OP_MASK_CODE2 0x3ff |
| #define OP_SH_CODE2 6 |
| #define OP_MASK_RT 0x1f |
| #define OP_SH_RT 16 |
| #define OP_MASK_FT 0x1f |
| #define OP_SH_FT 16 |
| #define OP_MASK_CACHE 0x1f |
| #define OP_SH_CACHE 16 |
| #define OP_MASK_RD 0x1f |
| #define OP_SH_RD 11 |
| #define OP_MASK_FS 0x1f |
| #define OP_SH_FS 11 |
| #define OP_MASK_PREFX 0x1f |
| #define OP_SH_PREFX 11 |
| #define OP_MASK_CCC 0x7 |
| #define OP_SH_CCC 8 |
| #define OP_MASK_SYSCALL 0xfffff |
| #define OP_SH_SYSCALL 6 |
| #define OP_MASK_SHAMT 0x1f |
| #define OP_SH_SHAMT 6 |
| #define OP_MASK_FD 0x1f |
| #define OP_SH_FD 6 |
| #define OP_MASK_TARGET 0x3ffffff |
| #define OP_SH_TARGET 0 |
| #define OP_MASK_COPZ 0x1ffffff |
| #define OP_SH_COPZ 0 |
| #define OP_MASK_IMMEDIATE 0xffff |
| #define OP_SH_IMMEDIATE 0 |
| #define OP_MASK_DELTA 0xffff |
| #define OP_SH_DELTA 0 |
| #define OP_MASK_FUNCT 0x3f |
| #define OP_SH_FUNCT 0 |
| #define OP_MASK_SPEC 0x3f |
| #define OP_SH_SPEC 0 |
| #define OP_SH_LOCC 8 /* FP condition code */ |
| #define OP_SH_HICC 18 /* FP condition code */ |
| #define OP_MASK_CC 0x7 |
| #define OP_SH_COP1NORM 25 /* Normal COP1 encoding */ |
| #define OP_MASK_COP1NORM 0x1 /* a single bit */ |
| #define OP_SH_COP1SPEC 21 /* COP1 encodings */ |
| #define OP_MASK_COP1SPEC 0xf |
| #define OP_MASK_COP1SCLR 0x4 |
| #define OP_MASK_COP1CMP 0x3 |
| #define OP_SH_COP1CMP 4 |
| #define OP_SH_FORMAT 21 /* FP short format field */ |
| #define OP_MASK_FORMAT 0x7 |
| #define OP_SH_TRUE 16 |
| #define OP_MASK_TRUE 0x1 |
| #define OP_SH_GE 17 |
| #define OP_MASK_GE 0x01 |
| #define OP_SH_UNSIGNED 16 |
| #define OP_MASK_UNSIGNED 0x1 |
| #define OP_SH_HINT 16 |
| #define OP_MASK_HINT 0x1f |
| #define OP_SH_MMI 0 /* Multimedia (parallel) op */ |
| #define OP_MASK_MMI 0x3f |
| #define OP_SH_MMISUB 6 |
| #define OP_MASK_MMISUB 0x1f |
| #define OP_MASK_PERFREG 0x1f /* Performance monitoring */ |
| #define OP_SH_PERFREG 1 |
| |
| /* This structure holds information for a particular instruction. */ |
| |
| struct mips_opcode |
| { |
| /* The name of the instruction. */ |
| const char *name; |
| /* A string describing the arguments for this instruction. */ |
| const char *args; |
| /* The basic opcode for the instruction. When assembling, this |
| opcode is modified by the arguments to produce the actual opcode |
| that is used. If pinfo is INSN_MACRO, then this is 0. */ |
| unsigned long match; |
| /* If pinfo is not INSN_MACRO, then this is a bit mask for the |
| relevant portions of the opcode when disassembling. If the |
| actual opcode anded with the match field equals the opcode field, |
| then we have found the correct instruction. If pinfo is |
| INSN_MACRO, then this field is the macro identifier. */ |
| unsigned long mask; |
| /* For a macro, this is INSN_MACRO. Otherwise, it is a collection |
| of bits describing the instruction, notably any relevant hazard |
| information. */ |
| unsigned long pinfo; |
| /* A collection of bits describing the instruction sets of which this |
| instruction or macro is a member. */ |
| unsigned long membership; |
| }; |
| |
| /* These are the characters which may appears in the args field of an |
| instruction. They appear in the order in which the fields appear |
| when the instruction is used. Commas and parentheses in the args |
| string are ignored when assembling, and written into the output |
| when disassembling. |
| |
| Each of these characters corresponds to a mask field defined above. |
| |
| "<" 5 bit shift amount (OP_*_SHAMT) |
| ">" shift amount between 32 and 63, stored after subtracting 32 (OP_*_SHAMT) |
| "a" 26 bit target address (OP_*_TARGET) |
| "b" 5 bit base register (OP_*_RS) |
| "c" 10 bit breakpoint code (OP_*_CODE) |
| "d" 5 bit destination register specifier (OP_*_RD) |
| "h" 5 bit prefx hint (OP_*_PREFX) |
| "i" 16 bit unsigned immediate (OP_*_IMMEDIATE) |
| "j" 16 bit signed immediate (OP_*_DELTA) |
| "k" 5 bit cache opcode in target register position (OP_*_CACHE) |
| "o" 16 bit signed offset (OP_*_DELTA) |
| "p" 16 bit PC relative branch target address (OP_*_DELTA) |
| "q" 10 bit extra breakpoint code (OP_*_CODE2) |
| "r" 5 bit same register used as both source and target (OP_*_RS) |
| "s" 5 bit source register specifier (OP_*_RS) |
| "t" 5 bit target register (OP_*_RT) |
| "u" 16 bit upper 16 bits of address (OP_*_IMMEDIATE) |
| "v" 5 bit same register used as both source and destination (OP_*_RS) |
| "w" 5 bit same register used as both target and destination (OP_*_RT) |
| "C" 25 bit coprocessor function code (OP_*_COPZ) |
| "B" 20 bit syscall function code (OP_*_SYSCALL) |
| "x" accept and ignore register name |
| "z" must be zero register |
| |
| Floating point instructions: |
| "D" 5 bit destination register (OP_*_FD) |
| "M" 3 bit compare condition code (OP_*_CCC) (only used for mips4 and up) |
| "N" 3 bit branch condition code (OP_*_BCC) (only used for mips4 and up) |
| "S" 5 bit fs source 1 register (OP_*_FS) |
| "T" 5 bit ft source 2 register (OP_*_FT) |
| "R" 5 bit fr source 3 register (OP_*_FR) |
| "V" 5 bit same register used as floating source and destination (OP_*_FS) |
| "W" 5 bit same register used as floating target and destination (OP_*_FT) |
| |
| Coprocessor instructions: |
| "E" 5 bit target register (OP_*_RT) |
| "G" 5 bit destination register (OP_*_RD) |
| "P" 5 bit performance-monitor register (OP_*_PERFREG) |
| |
| Macro instructions: |
| "A" General 32 bit expression |
| "I" 32 bit immediate |
| "F" 64 bit floating point constant in .rdata |
| "L" 64 bit floating point constant in .lit8 |
| "f" 32 bit floating point constant |
| "l" 32 bit floating point constant in .lit4 |
| |
| Other: |
| "()" parens surrounding optional value |
| "," separates operands |
| |
| Characters used so far, for quick reference when adding more: |
| "<>()," |
| "ABCDEFGILMNSTRVW" |
| "abcdfhijklopqrstuvwxz" |
| */ |
| |
| /* These are the bits which may be set in the pinfo field of an |
| instructions, if it is not equal to INSN_MACRO. */ |
| |
| /* Modifies the general purpose register in OP_*_RD. */ |
| #define INSN_WRITE_GPR_D 0x00000001 |
| /* Modifies the general purpose register in OP_*_RT. */ |
| #define INSN_WRITE_GPR_T 0x00000002 |
| /* Modifies general purpose register 31. */ |
| #define INSN_WRITE_GPR_31 0x00000004 |
| /* Modifies the floating point register in OP_*_FD. */ |
| #define INSN_WRITE_FPR_D 0x00000008 |
| /* Modifies the floating point register in OP_*_FS. */ |
| #define INSN_WRITE_FPR_S 0x00000010 |
| /* Modifies the floating point register in OP_*_FT. */ |
| #define INSN_WRITE_FPR_T 0x00000020 |
| /* Reads the general purpose register in OP_*_RS. */ |
| #define INSN_READ_GPR_S 0x00000040 |
| /* Reads the general purpose register in OP_*_RT. */ |
| #define INSN_READ_GPR_T 0x00000080 |
| /* Reads the floating point register in OP_*_FS. */ |
| #define INSN_READ_FPR_S 0x00000100 |
| /* Reads the floating point register in OP_*_FT. */ |
| #define INSN_READ_FPR_T 0x00000200 |
| /* Reads the floating point register in OP_*_FR. */ |
| #define INSN_READ_FPR_R 0x00000400 |
| /* Modifies coprocessor condition code. */ |
| #define INSN_WRITE_COND_CODE 0x00000800 |
| /* Reads coprocessor condition code. */ |
| #define INSN_READ_COND_CODE 0x00001000 |
| /* TLB operation. */ |
| #define INSN_TLB 0x00002000 |
| /* Reads coprocessor register other than floating point register. */ |
| #define INSN_COP 0x00004000 |
| /* Instruction loads value from memory, requiring delay. */ |
| #define INSN_LOAD_MEMORY_DELAY 0x00008000 |
| /* Instruction loads value from coprocessor, requiring delay. */ |
| #define INSN_LOAD_COPROC_DELAY 0x00010000 |
| /* Instruction has unconditional branch delay slot. */ |
| #define INSN_UNCOND_BRANCH_DELAY 0x00020000 |
| /* Instruction has conditional branch delay slot. */ |
| #define INSN_COND_BRANCH_DELAY 0x00040000 |
| /* Conditional branch likely: if branch not taken, insn nullified. */ |
| #define INSN_COND_BRANCH_LIKELY 0x00080000 |
| /* Moves to coprocessor register, requiring delay. */ |
| #define INSN_COPROC_MOVE_DELAY 0x00100000 |
| /* Loads coprocessor register from memory, requiring delay. */ |
| #define INSN_COPROC_MEMORY_DELAY 0x00200000 |
| /* Reads the HI register. */ |
| #define INSN_READ_HI 0x00400000 |
| /* Reads the LO register. */ |
| #define INSN_READ_LO 0x00800000 |
| /* Modifies the HI register. */ |
| #define INSN_WRITE_HI 0x01000000 |
| /* Modifies the LO register. */ |
| #define INSN_WRITE_LO 0x02000000 |
| /* Takes a trap (easier to keep out of delay slot). */ |
| #define INSN_TRAP 0x04000000 |
| /* Instruction stores value into memory. */ |
| #define INSN_STORE_MEMORY 0x08000000 |
| /* Instruction uses single precision floating point. */ |
| #define FP_S 0x10000000 |
| /* Instruction uses double precision floating point. */ |
| #define FP_D 0x20000000 |
| /* Instruction is part of the tx39's integer multiply family. */ |
| #define INSN_MULT 0x40000000 |
| /* Instruction synchronize shared memory. */ |
| #define INSN_SYNC 0x80000000 |
| |
| /* Instruction is actually a macro. It should be ignored by the |
| disassembler, and requires special treatment by the assembler. */ |
| #define INSN_MACRO 0xffffffff |
| |
| |
| |
| |
| |
| /* MIPS ISA field--CPU level at which insn is supported. */ |
| #define INSN_ISA 0x0000000F |
| /* An instruction which is not part of any basic MIPS ISA. |
| (ie it is a chip specific instruction) */ |
| #define INSN_NO_ISA 0x00000000 |
| /* MIPS ISA 1 instruction. */ |
| #define INSN_ISA1 0x00000001 |
| /* MIPS ISA 2 instruction (R6000 or R4000). */ |
| #define INSN_ISA2 0x00000002 |
| /* MIPS ISA 3 instruction (R4000). */ |
| #define INSN_ISA3 0x00000003 |
| /* MIPS ISA 4 instruction (R8000). */ |
| #define INSN_ISA4 0x00000004 |
| |
| /* Chip specific instructions. These are bitmasks. */ |
| /* MIPS R4650 instruction. */ |
| #define INSN_4650 0x00000010 |
| /* LSI R4010 instruction. */ |
| #define INSN_4010 0x00000020 |
| /* NEC VR4100 instruction. */ |
| #define INSN_4100 0x00000040 |
| /* Toshiba R3900 instruction. */ |
| #define INSN_3900 0x00000080 |
| |
| |
| /* This is a list of macro expanded instructions. |
| * |
| * _I appended means immediate |
| * _A appended means address |
| * _AB appended means address with base register |
| * _D appended means 64 bit floating point constant |
| * _S appended means 32 bit floating point constant |
| */ |
| enum { |
| M_ABS, |
| M_ADD_I, |
| M_ADDU_I, |
| M_AND_I, |
| M_BEQ, |
| M_BEQ_I, |
| M_BEQL_I, |
| M_BGE, |
| M_BGEL, |
| M_BGE_I, |
| M_BGEL_I, |
| M_BGEU, |
| M_BGEUL, |
| M_BGEU_I, |
| M_BGEUL_I, |
| M_BGT, |
| M_BGTL, |
| M_BGT_I, |
| M_BGTL_I, |
| M_BGTU, |
| M_BGTUL, |
| M_BGTU_I, |
| M_BGTUL_I, |
| M_BLE, |
| M_BLEL, |
| M_BLE_I, |
| M_BLEL_I, |
| M_BLEU, |
| M_BLEUL, |
| M_BLEU_I, |
| M_BLEUL_I, |
| M_BLT, |
| M_BLTL, |
| M_BLT_I, |
| M_BLTL_I, |
| M_BLTU, |
| M_BLTUL, |
| M_BLTU_I, |
| M_BLTUL_I, |
| M_BNE, |
| M_BNE_I, |
| M_BNEL_I, |
| M_DABS, |
| M_DADD_I, |
| M_DADDU_I, |
| M_DDIV_3, |
| M_DDIV_3I, |
| M_DDIVU_3, |
| M_DDIVU_3I, |
| M_DIV_3, |
| M_DIV_3I, |
| M_DIVU_3, |
| M_DIVU_3I, |
| M_DLA_AB, |
| M_DLI, |
| M_DMUL, |
| M_DMUL_I, |
| M_DMULO, |
| M_DMULO_I, |
| M_DMULOU, |
| M_DMULOU_I, |
| M_DREM_3, |
| M_DREM_3I, |
| M_DREMU_3, |
| M_DREMU_3I, |
| M_DSUB_I, |
| M_DSUBU_I, |
| M_DSUBU_I_2, |
| M_J_A, |
| M_JAL_1, |
| M_JAL_2, |
| M_JAL_A, |
| M_L_DOB, |
| M_L_DAB, |
| M_LA_AB, |
| M_LB_A, |
| M_LB_AB, |
| M_LBU_A, |
| M_LBU_AB, |
| M_LD_A, |
| M_LD_OB, |
| M_LD_AB, |
| M_LDC1_AB, |
| M_LDC2_AB, |
| M_LDC3_AB, |
| M_LDL_AB, |
| M_LDR_AB, |
| M_LH_A, |
| M_LH_AB, |
| M_LHU_A, |
| M_LHU_AB, |
| M_LI, |
| M_LI_D, |
| M_LI_DD, |
| M_LI_S, |
| M_LI_SS, |
| M_LL_AB, |
| M_LLD_AB, |
| M_LS_A, |
| M_LW_A, |
| M_LW_AB, |
| M_LWC0_A, |
| M_LWC0_AB, |
| M_LWC1_A, |
| M_LWC1_AB, |
| M_LWC2_A, |
| M_LWC2_AB, |
| M_LWC3_A, |
| M_LWC3_AB, |
| M_LWL_A, |
| M_LWL_AB, |
| M_LWR_A, |
| M_LWR_AB, |
| M_LWU_AB, |
| M_MUL, |
| M_MUL_I, |
| M_MULO, |
| M_MULO_I, |
| M_MULOU, |
| M_MULOU_I, |
| M_NOR_I, |
| M_OR_I, |
| M_REM_3, |
| M_REM_3I, |
| M_REMU_3, |
| M_REMU_3I, |
| M_ROL, |
| M_ROL_I, |
| M_ROR, |
| M_ROR_I, |
| M_S_DA, |
| M_S_DOB, |
| M_S_DAB, |
| M_S_S, |
| M_SC_AB, |
| M_SCD_AB, |
| M_SD_A, |
| M_SD_OB, |
| M_SD_AB, |
| M_SDC1_AB, |
| M_SDC2_AB, |
| M_SDC3_AB, |
| M_SDL_AB, |
| M_SDR_AB, |
| M_SEQ, |
| M_SEQ_I, |
| M_SGE, |
| M_SGE_I, |
| M_SGEU, |
| M_SGEU_I, |
| M_SGT, |
| M_SGT_I, |
| M_SGTU, |
| M_SGTU_I, |
| M_SLE, |
| M_SLE_I, |
| M_SLEU, |
| M_SLEU_I, |
| M_SLT_I, |
| M_SLTU_I, |
| M_SNE, |
| M_SNE_I, |
| M_SB_A, |
| M_SB_AB, |
| M_SH_A, |
| M_SH_AB, |
| M_SW_A, |
| M_SW_AB, |
| M_SWC0_A, |
| M_SWC0_AB, |
| M_SWC1_A, |
| M_SWC1_AB, |
| M_SWC2_A, |
| M_SWC2_AB, |
| M_SWC3_A, |
| M_SWC3_AB, |
| M_SWL_A, |
| M_SWL_AB, |
| M_SWR_A, |
| M_SWR_AB, |
| M_SUB_I, |
| M_SUBU_I, |
| M_SUBU_I_2, |
| M_TEQ_I, |
| M_TGE_I, |
| M_TGEU_I, |
| M_TLT_I, |
| M_TLTU_I, |
| M_TNE_I, |
| M_TRUNCWD, |
| M_TRUNCWS, |
| M_ULD, |
| M_ULD_A, |
| M_ULH, |
| M_ULH_A, |
| M_ULHU, |
| M_ULHU_A, |
| M_ULW, |
| M_ULW_A, |
| M_USH, |
| M_USH_A, |
| M_USW, |
| M_USW_A, |
| M_USD, |
| M_USD_A, |
| M_XOR_I, |
| M_COP0, |
| M_COP1, |
| M_COP2, |
| M_COP3, |
| M_NUM_MACROS |
| }; |
| |
| |
| /* The order of overloaded instructions matters. Label arguments and |
| register arguments look the same. Instructions that can have either |
| for arguments must apear in the correct order in this table for the |
| assembler to pick the right one. In other words, entries with |
| immediate operands must apear after the same instruction with |
| registers. |
| |
| Many instructions are short hand for other instructions (i.e., The |
| jal <register> instruction is short for jalr <register>). */ |
| |
| extern const struct mips_opcode mips_builtin_opcodes[]; |
| extern const int bfd_mips_num_builtin_opcodes; |
| extern struct mips_opcode *mips_opcodes; |
| extern int bfd_mips_num_opcodes; |
| #define NUMOPCODES bfd_mips_num_opcodes |
| |
| |
| /* The rest of this file adds definitions for the mips16 TinyRISC |
| processor. */ |
| |
| /* These are the bitmasks and shift counts used for the different |
| fields in the instruction formats. Other than OP, no masks are |
| provided for the fixed portions of an instruction, since they are |
| not needed. |
| |
| The I format uses IMM11. |
| |
| The RI format uses RX and IMM8. |
| |
| The RR format uses RX, and RY. |
| |
| The RRI format uses RX, RY, and IMM5. |
| |
| The RRR format uses RX, RY, and RZ. |
| |
| The RRI_A format uses RX, RY, and IMM4. |
| |
| The SHIFT format uses RX, RY, and SHAMT. |
| |
| The I8 format uses IMM8. |
| |
| The I8_MOVR32 format uses RY and REGR32. |
| |
| The IR_MOV32R format uses REG32R and MOV32Z. |
| |
| The I64 format uses IMM8. |
| |
| The RI64 format uses RY and IMM5. |
| */ |
| |
| #define MIPS16OP_MASK_OP 0x1f |
| #define MIPS16OP_SH_OP 11 |
| #define MIPS16OP_MASK_IMM11 0x7ff |
| #define MIPS16OP_SH_IMM11 0 |
| #define MIPS16OP_MASK_RX 0x7 |
| #define MIPS16OP_SH_RX 8 |
| #define MIPS16OP_MASK_IMM8 0xff |
| #define MIPS16OP_SH_IMM8 0 |
| #define MIPS16OP_MASK_RY 0x7 |
| #define MIPS16OP_SH_RY 5 |
| #define MIPS16OP_MASK_IMM5 0x1f |
| #define MIPS16OP_SH_IMM5 0 |
| #define MIPS16OP_MASK_RZ 0x7 |
| #define MIPS16OP_SH_RZ 2 |
| #define MIPS16OP_MASK_IMM4 0xf |
| #define MIPS16OP_SH_IMM4 0 |
| #define MIPS16OP_MASK_REGR32 0x1f |
| #define MIPS16OP_SH_REGR32 0 |
| #define MIPS16OP_MASK_REG32R 0x1f |
| #define MIPS16OP_SH_REG32R 3 |
| #define MIPS16OP_EXTRACT_REG32R(i) ((((i) >> 5) & 7) | ((i) & 0x18)) |
| #define MIPS16OP_MASK_MOVE32Z 0x7 |
| #define MIPS16OP_SH_MOVE32Z 0 |
| #define MIPS16OP_MASK_IMM6 0x3f |
| #define MIPS16OP_SH_IMM6 5 |
| |
| /* These are the characters which may appears in the args field of an |
| instruction. They appear in the order in which the fields appear |
| when the instruction is used. Commas and parentheses in the args |
| string are ignored when assembling, and written into the output |
| when disassembling. |
| |
| "y" 3 bit register (MIPS16OP_*_RY) |
| "x" 3 bit register (MIPS16OP_*_RX) |
| "z" 3 bit register (MIPS16OP_*_RZ) |
| "Z" 3 bit register (MIPS16OP_*_MOVE32Z) |
| "v" 3 bit same register as source and destination (MIPS16OP_*_RX) |
| "w" 3 bit same register as source and destination (MIPS16OP_*_RY) |
| "0" zero register ($0) |
| "S" stack pointer ($sp or $29) |
| "P" program counter |
| "R" return address register ($ra or $31) |
| "X" 5 bit MIPS register (MIPS16OP_*_REGR32) |
| "Y" 5 bit MIPS register (MIPS16OP_*_REG32R) |
| "6" 6 bit unsigned break code (MIPS16OP_*_IMM6) |
| "a" 26 bit jump address |
| "e" 11 bit extension value |
| "l" register list for entry instruction |
| "L" register list for exit instruction |
| |
| The remaining codes may be extended. Except as otherwise noted, |
| the full extended operand is a 16 bit signed value. |
| "<" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 5 bit unsigned) |
| ">" 3 bit unsigned shift count * 0 (MIPS16OP_*_RX) (full 5 bit unsigned) |
| "[" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 6 bit unsigned) |
| "]" 3 bit unsigned shift count * 0 (MIPS16OP_*_RX) (full 6 bit unsigned) |
| "4" 4 bit signed immediate * 0 (MIPS16OP_*_IMM4) (full 15 bit signed) |
| "5" 5 bit unsigned immediate * 0 (MIPS16OP_*_IMM5) |
| "H" 5 bit unsigned immediate * 2 (MIPS16OP_*_IMM5) |
| "W" 5 bit unsigned immediate * 4 (MIPS16OP_*_IMM5) |
| "D" 5 bit unsigned immediate * 8 (MIPS16OP_*_IMM5) |
| "j" 5 bit signed immediate * 0 (MIPS16OP_*_IMM5) |
| "8" 8 bit unsigned immediate * 0 (MIPS16OP_*_IMM8) |
| "V" 8 bit unsigned immediate * 4 (MIPS16OP_*_IMM8) |
| "C" 8 bit unsigned immediate * 8 (MIPS16OP_*_IMM8) |
| "U" 8 bit unsigned immediate * 0 (MIPS16OP_*_IMM8) (full 16 bit unsigned) |
| "k" 8 bit signed immediate * 0 (MIPS16OP_*_IMM8) |
| "K" 8 bit signed immediate * 8 (MIPS16OP_*_IMM8) |
| "p" 8 bit conditional branch address (MIPS16OP_*_IMM8) |
| "q" 11 bit branch address (MIPS16OP_*_IMM11) |
| "A" 8 bit PC relative address * 4 (MIPS16OP_*_IMM8) |
| "B" 5 bit PC relative address * 8 (MIPS16OP_*_IMM5) |
| "E" 5 bit PC relative address * 4 (MIPS16OP_*_IMM5) |
| */ |
| |
| /* For the mips16, we use the same opcode table format and a few of |
| the same flags. However, most of the flags are different. */ |
| |
| /* Modifies the register in MIPS16OP_*_RX. */ |
| #define MIPS16_INSN_WRITE_X 0x00000001 |
| /* Modifies the register in MIPS16OP_*_RY. */ |
| #define MIPS16_INSN_WRITE_Y 0x00000002 |
| /* Modifies the register in MIPS16OP_*_RZ. */ |
| #define MIPS16_INSN_WRITE_Z 0x00000004 |
| /* Modifies the T ($24) register. */ |
| #define MIPS16_INSN_WRITE_T 0x00000008 |
| /* Modifies the SP ($29) register. */ |
| #define MIPS16_INSN_WRITE_SP 0x00000010 |
| /* Modifies the RA ($31) register. */ |
| #define MIPS16_INSN_WRITE_31 0x00000020 |
| /* Modifies the general purpose register in MIPS16OP_*_REG32R. */ |
| #define MIPS16_INSN_WRITE_GPR_Y 0x00000040 |
| /* Reads the register in MIPS16OP_*_RX. */ |
| #define MIPS16_INSN_READ_X 0x00000080 |
| /* Reads the register in MIPS16OP_*_RY. */ |
| #define MIPS16_INSN_READ_Y 0x00000100 |
| /* Reads the register in MIPS16OP_*_MOVE32Z. */ |
| #define MIPS16_INSN_READ_Z 0x00000200 |
| /* Reads the T ($24) register. */ |
| #define MIPS16_INSN_READ_T 0x00000400 |
| /* Reads the SP ($29) register. */ |
| #define MIPS16_INSN_READ_SP 0x00000800 |
| /* Reads the RA ($31) register. */ |
| #define MIPS16_INSN_READ_31 0x00001000 |
| /* Reads the program counter. */ |
| #define MIPS16_INSN_READ_PC 0x00002000 |
| /* Reads the general purpose register in MIPS16OP_*_REGR32. */ |
| #define MIPS16_INSN_READ_GPR_X 0x00004000 |
| /* Is a branch insn. */ |
| #define MIPS16_INSN_BRANCH 0x00010000 |
| |
| /* The following flags have the same value for the mips16 opcode |
| table: |
| INSN_UNCOND_BRANCH_DELAY |
| INSN_COND_BRANCH_DELAY |
| INSN_COND_BRANCH_LIKELY (never used) |
| INSN_READ_HI |
| INSN_READ_LO |
| INSN_WRITE_HI |
| INSN_WRITE_LO |
| INSN_TRAP |
| INSN_ISA3 |
| */ |
| |
| extern const struct mips_opcode mips16_opcodes[]; |
| extern const int bfd_mips16_num_opcodes; |
| |
| #endif /* _MIPS_H_ */ |