/* mips.h. Mips opcode list for GDB, the GNU debugger.
- Copyright 1993, 1995 Free Software Foundation, Inc.
+ 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
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
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).
+ 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.
#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_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. */
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 instead the
- ISA level of the macro (0 or 1 is always supported, 2 is ISA 2,
- etc.). */
+ 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
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
"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)
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
"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
#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 0x70000000
+#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 0x10000000
+#define INSN_ISA2 0x00000002
/* MIPS ISA 3 instruction (R4000). */
-#define INSN_ISA3 0x20000000
-/* MIPS R4650 instruction. */
-#define INSN_4650 0x30000000
+#define INSN_ISA3 0x00000003
/* MIPS ISA 4 instruction (R8000). */
-#define INSN_ISA4 0x40000000
+#define INSN_ISA4 0x00000004
+#define INSN_ISA5 0x00000005
+
+/* Chip specific instructions. These are bitmasks. */
+/* MIPS R4650 instruction. */
+#define INSN_4650 0x00000010
/* LSI R4010 instruction. */
-#define INSN_4010 0x50000000
+#define INSN_4010 0x00000020
+/* NEC VR4100 instruction. */
+#define INSN_4100 0x00000040
+/* Toshiba R3900 instruction. */
+#define INSN_3900 0x00000080
-/* Instruction is actually a macro. It should be ignored by the
- disassembler, and requires special treatment by the assembler. */
-#define INSN_MACRO 0xffffffff
+/* 32-bit code running on a ISA3+ CPU. */
+#define INSN_GP32 0x00001000
+
+/* Test for membership in an ISA including chip specific ISAs.
+ INSN is pointer to an element of the opcode table; ISA is the
+ specified ISA to test against; and CPU is the CPU specific ISA
+ to test, or zero if no CPU specific ISA test is desired.
+ The gp32 arg is set when you need to force 32-bit register usage on
+ a machine with 64-bit registers; see the documentation under -mgp32
+ in the MIPS gas docs. */
+
+#define OPCODE_IS_MEMBER(insn,isa,cpu,gp32) \
+ ((((insn)->membership & INSN_ISA) != 0 \
+ && ((insn)->membership & INSN_ISA) <= isa \
+ && ((insn)->membership & INSN_GP32 ? gp32 : 1)) \
+ || (cpu == 4650 \
+ && ((insn)->membership & INSN_4650) != 0) \
+ || (cpu == 4010 \
+ && ((insn)->membership & INSN_4010) != 0) \
+ || ((cpu == 4100 \
+ || cpu == 4111 \
+ ) \
+ && ((insn)->membership & INSN_4100) != 0) \
+ || (cpu == 3900 \
+ && ((insn)->membership & INSN_3900) != 0))
/* This is a list of macro expanded instructions.
*
M_ADD_I,
M_ADDU_I,
M_AND_I,
+ M_BEQ,
M_BEQ_I,
M_BEQL_I,
M_BGE,
M_BLTUL,
M_BLTU_I,
M_BLTUL_I,
+ M_BNE,
M_BNE_I,
M_BNEL_I,
M_DABS,
M_DREMU_3I,
M_DSUB_I,
M_DSUBU_I,
+ M_DSUBU_I_2,
M_J_A,
M_JAL_1,
M_JAL_2,
M_SWR_AB,
M_SUB_I,
M_SUBU_I,
+ M_SUBU_I_2,
M_TEQ_I,
M_TGE_I,
M_TGEU_I,
M_USW_A,
M_USD,
M_USD_A,
- M_XOR_I
+ 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
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_opcodes[];
-extern const int bfd_mips_num_opcodes;
+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
+
+\f
+/* 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_ */
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