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binutils-gdb/include/opcode/mips.h
Maciej W. Rozycki 7c176fa823 * mips.h: Document the use of FP_D in MIPS16 mode. Adjust the 
order of flags documented.
2011-08-03 21:09:46 +00:00

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/* mips.h. Mips opcode list for GDB, the GNU debugger.
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
2003, 2004, 2005, 2008, 2009, 2010
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 3,
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 COPYING3. If not, write to the Free
Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, 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, and MIPS32 and later
architectures allow 20 bits to be set with a signal operand
(using CODE20).
The syscall instruction uses CODE20.
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_CODE20 0xfffff /* 20 bit syscall/breakpoint code. */
#define OP_SH_CODE20 6
#define OP_MASK_SHAMT 0x1f
#define OP_SH_SHAMT 6
#define OP_MASK_EXTLSB OP_MASK_SHAMT
#define OP_SH_EXTLSB OP_SH_SHAMT
#define OP_MASK_STYPE OP_MASK_SHAMT
#define OP_SH_STYPE OP_SH_SHAMT
#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
#define OP_SH_SEL 0 /* Coprocessor select field. */
#define OP_MASK_SEL 0x7 /* The sel field of mfcZ and mtcZ. */
#define OP_SH_CODE19 6 /* 19 bit wait code. */
#define OP_MASK_CODE19 0x7ffff
#define OP_SH_ALN 21
#define OP_MASK_ALN 0x7
#define OP_SH_VSEL 21
#define OP_MASK_VSEL 0x1f
#define OP_MASK_VECBYTE 0x7 /* Selector field is really 4 bits,
but 0x8-0xf don't select bytes. */
#define OP_SH_VECBYTE 22
#define OP_MASK_VECALIGN 0x7 /* Vector byte-align (alni.ob) op. */
#define OP_SH_VECALIGN 21
#define OP_MASK_INSMSB 0x1f /* "ins" MSB. */
#define OP_SH_INSMSB 11
#define OP_MASK_EXTMSBD 0x1f /* "ext" MSBD. */
#define OP_SH_EXTMSBD 11
/* MIPS DSP ASE */
#define OP_SH_DSPACC 11
#define OP_MASK_DSPACC 0x3
#define OP_SH_DSPACC_S 21
#define OP_MASK_DSPACC_S 0x3
#define OP_SH_DSPSFT 20
#define OP_MASK_DSPSFT 0x3f
#define OP_SH_DSPSFT_7 19
#define OP_MASK_DSPSFT_7 0x7f
#define OP_SH_SA3 21
#define OP_MASK_SA3 0x7
#define OP_SH_SA4 21
#define OP_MASK_SA4 0xf
#define OP_SH_IMM8 16
#define OP_MASK_IMM8 0xff
#define OP_SH_IMM10 16
#define OP_MASK_IMM10 0x3ff
#define OP_SH_WRDSP 11
#define OP_MASK_WRDSP 0x3f
#define OP_SH_RDDSP 16
#define OP_MASK_RDDSP 0x3f
#define OP_SH_BP 11
#define OP_MASK_BP 0x3
/* MIPS MT ASE */
#define OP_SH_MT_U 5
#define OP_MASK_MT_U 0x1
#define OP_SH_MT_H 4
#define OP_MASK_MT_H 0x1
#define OP_SH_MTACC_T 18
#define OP_MASK_MTACC_T 0x3
#define OP_SH_MTACC_D 13
#define OP_MASK_MTACC_D 0x3
#define OP_OP_COP0 0x10
#define OP_OP_COP1 0x11
#define OP_OP_COP2 0x12
#define OP_OP_COP3 0x13
#define OP_OP_LWC1 0x31
#define OP_OP_LWC2 0x32
#define OP_OP_LWC3 0x33 /* a.k.a. pref */
#define OP_OP_LDC1 0x35
#define OP_OP_LDC2 0x36
#define OP_OP_LDC3 0x37 /* a.k.a. ld */
#define OP_OP_SWC1 0x39
#define OP_OP_SWC2 0x3a
#define OP_OP_SWC3 0x3b
#define OP_OP_SDC1 0x3d
#define OP_OP_SDC2 0x3e
#define OP_OP_SDC3 0x3f /* a.k.a. sd */
/* Values in the 'VSEL' field. */
#define MDMX_FMTSEL_IMM_QH 0x1d
#define MDMX_FMTSEL_IMM_OB 0x1e
#define MDMX_FMTSEL_VEC_QH 0x15
#define MDMX_FMTSEL_VEC_OB 0x16
/* UDI */
#define OP_SH_UDI1 6
#define OP_MASK_UDI1 0x1f
#define OP_SH_UDI2 6
#define OP_MASK_UDI2 0x3ff
#define OP_SH_UDI3 6
#define OP_MASK_UDI3 0x7fff
#define OP_SH_UDI4 6
#define OP_MASK_UDI4 0xfffff
/* Octeon */
#define OP_SH_BBITIND 16
#define OP_MASK_BBITIND 0x1f
#define OP_SH_CINSPOS 6
#define OP_MASK_CINSPOS 0x1f
#define OP_SH_CINSLM1 11
#define OP_MASK_CINSLM1 0x1f
#define OP_SH_SEQI 6
#define OP_MASK_SEQI 0x3ff
/* Loongson */
#define OP_SH_OFFSET_A 6
#define OP_MASK_OFFSET_A 0xff
#define OP_SH_OFFSET_B 3
#define OP_MASK_OFFSET_B 0xff
#define OP_SH_OFFSET_C 6
#define OP_MASK_OFFSET_C 0x1ff
#define OP_SH_RZ 0
#define OP_MASK_RZ 0x1f
#define OP_SH_FZ 0
#define OP_MASK_FZ 0x1f
/* Every MICROMIPSOP_X definition requires a corresponding OP_X
definition, and vice versa. This simplifies various parts
of the operand handling in GAS. The fields below only exist
in the microMIPS encoding, so define each one to have an empty
range. */
#define OP_MASK_CODE10 0
#define OP_SH_CODE10 0
#define OP_MASK_TRAP 0
#define OP_SH_TRAP 0
#define OP_MASK_OFFSET12 0
#define OP_SH_OFFSET12 0
#define OP_MASK_OFFSET10 0
#define OP_SH_OFFSET10 0
#define OP_MASK_RS3 0
#define OP_SH_RS3 0
#define OP_MASK_MB 0
#define OP_SH_MB 0
#define OP_MASK_MC 0
#define OP_SH_MC 0
#define OP_MASK_MD 0
#define OP_SH_MD 0
#define OP_MASK_ME 0
#define OP_SH_ME 0
#define OP_MASK_MF 0
#define OP_SH_MF 0
#define OP_MASK_MG 0
#define OP_SH_MG 0
#define OP_MASK_MH 0
#define OP_SH_MH 0
#define OP_MASK_MI 0
#define OP_SH_MI 0
#define OP_MASK_MJ 0
#define OP_SH_MJ 0
#define OP_MASK_ML 0
#define OP_SH_ML 0
#define OP_MASK_MM 0
#define OP_SH_MM 0
#define OP_MASK_MN 0
#define OP_SH_MN 0
#define OP_MASK_MP 0
#define OP_SH_MP 0
#define OP_MASK_MQ 0
#define OP_SH_MQ 0
#define OP_MASK_IMMA 0
#define OP_SH_IMMA 0
#define OP_MASK_IMMB 0
#define OP_SH_IMMB 0
#define OP_MASK_IMMC 0
#define OP_SH_IMMC 0
#define OP_MASK_IMMF 0
#define OP_SH_IMMF 0
#define OP_MASK_IMMG 0
#define OP_SH_IMMG 0
#define OP_MASK_IMMH 0
#define OP_SH_IMMH 0
#define OP_MASK_IMMI 0
#define OP_SH_IMMI 0
#define OP_MASK_IMMJ 0
#define OP_SH_IMMJ 0
#define OP_MASK_IMML 0
#define OP_SH_IMML 0
#define OP_MASK_IMMM 0
#define OP_SH_IMMM 0
#define OP_MASK_IMMN 0
#define OP_SH_IMMN 0
#define OP_MASK_IMMO 0
#define OP_SH_IMMO 0
#define OP_MASK_IMMP 0
#define OP_SH_IMMP 0
#define OP_MASK_IMMQ 0
#define OP_SH_IMMQ 0
#define OP_MASK_IMMU 0
#define OP_SH_IMMU 0
#define OP_MASK_IMMW 0
#define OP_SH_IMMW 0
#define OP_MASK_IMMX 0
#define OP_SH_IMMX 0
#define OP_MASK_IMMY 0
#define OP_SH_IMMY 0
/* 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 additional bits describing the instruction. */
unsigned long pinfo2;
/* 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 appear 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.
"1" 5 bit sync type (OP_*_SHAMT)
"<" 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)
Also used for immediate operands in vr5400 vector insns.
"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)
"U" 5 bit same destination register in both OP_*_RD and OP_*_RT
(used by clo and clz)
"C" 25 bit coprocessor function code (OP_*_COPZ)
"B" 20 bit syscall/breakpoint function code (OP_*_CODE20)
"J" 19 bit wait function code (OP_*_CODE19)
"x" accept and ignore register name
"z" must be zero register
"K" 5 bit Hardware Register (rdhwr instruction) (OP_*_RD)
"+A" 5 bit ins/ext/dins/dext/dinsm/dextm position, which becomes
LSB (OP_*_SHAMT; OP_*_EXTLSB or OP_*_STYPE may be used for
microMIPS compatibility).
Enforces: 0 <= pos < 32.
"+B" 5 bit ins/dins size, which becomes MSB (OP_*_INSMSB).
Requires that "+A" or "+E" occur first to set position.
Enforces: 0 < (pos+size) <= 32.
"+C" 5 bit ext/dext size, which becomes MSBD (OP_*_EXTMSBD).
Requires that "+A" or "+E" occur first to set position.
Enforces: 0 < (pos+size) <= 32.
(Also used by "dext" w/ different limits, but limits for
that are checked by the M_DEXT macro.)
"+E" 5 bit dinsu/dextu position, which becomes LSB-32 (OP_*_SHAMT).
Enforces: 32 <= pos < 64.
"+F" 5 bit "dinsm/dinsu" size, which becomes MSB-32 (OP_*_INSMSB).
Requires that "+A" or "+E" occur first to set position.
Enforces: 32 < (pos+size) <= 64.
"+G" 5 bit "dextm" size, which becomes MSBD-32 (OP_*_EXTMSBD).
Requires that "+A" or "+E" occur first to set position.
Enforces: 32 < (pos+size) <= 64.
"+H" 5 bit "dextu" size, which becomes MSBD (OP_*_EXTMSBD).
Requires that "+A" or "+E" occur first to set position.
Enforces: 32 < (pos+size) <= 64.
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)
"H" 3 bit sel field for (d)mtc* and (d)mfc* (OP_*_SEL)
"P" 5 bit performance-monitor register (OP_*_PERFREG)
"e" 5 bit vector register byte specifier (OP_*_VECBYTE)
"%" 3 bit immediate vr5400 vector alignment operand (OP_*_VECALIGN)
see also "k" above
"+D" Combined destination register ("G") and sel ("H") for CP0 ops,
for pretty-printing in disassembly only.
Macro instructions:
"A" General 32 bit expression
"I" 32 bit immediate (value placed in imm_expr).
"+I" 32 bit immediate (value placed in imm2_expr).
"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
MDMX instruction operands (note that while these use the FP register
fields, they accept both $fN and $vN names for the registers):
"O" MDMX alignment offset (OP_*_ALN)
"Q" MDMX vector/scalar/immediate source (OP_*_VSEL and OP_*_FT)
"X" MDMX destination register (OP_*_FD)
"Y" MDMX source register (OP_*_FS)
"Z" MDMX source register (OP_*_FT)
DSP ASE usage:
"2" 2 bit unsigned immediate for byte align (OP_*_BP)
"3" 3 bit unsigned immediate (OP_*_SA3)
"4" 4 bit unsigned immediate (OP_*_SA4)
"5" 8 bit unsigned immediate (OP_*_IMM8)
"6" 5 bit unsigned immediate (OP_*_RS)
"7" 2 bit dsp accumulator register (OP_*_DSPACC)
"8" 6 bit unsigned immediate (OP_*_WRDSP)
"9" 2 bit dsp accumulator register (OP_*_DSPACC_S)
"0" 6 bit signed immediate (OP_*_DSPSFT)
":" 7 bit signed immediate (OP_*_DSPSFT_7)
"'" 6 bit unsigned immediate (OP_*_RDDSP)
"@" 10 bit signed immediate (OP_*_IMM10)
MT ASE usage:
"!" 1 bit usermode flag (OP_*_MT_U)
"$" 1 bit load high flag (OP_*_MT_H)
"*" 2 bit dsp/smartmips accumulator register (OP_*_MTACC_T)
"&" 2 bit dsp/smartmips accumulator register (OP_*_MTACC_D)
"g" 5 bit coprocessor 1 and 2 destination register (OP_*_RD)
"+t" 5 bit coprocessor 0 destination register (OP_*_RT)
"+T" 5 bit coprocessor 0 destination register (OP_*_RT) - disassembly only
UDI immediates:
"+1" UDI immediate bits 6-10
"+2" UDI immediate bits 6-15
"+3" UDI immediate bits 6-20
"+4" UDI immediate bits 6-25
Octeon:
"+x" Bit index field of bbit. Enforces: 0 <= index < 32.
"+X" Bit index field of bbit aliasing bbit32. Matches if 32 <= index < 64,
otherwise skips to next candidate.
"+p" Position field of cins/cins32/exts/exts32. Enforces 0 <= pos < 32.
"+P" Position field of cins/exts aliasing cins32/exts32. Matches if
32 <= pos < 64, otherwise skips to next candidate.
"+Q" Immediate field of seqi/snei. Enforces -512 <= imm < 512.
"+s" Length-minus-one field of cins/exts. Enforces: 0 <= lenm1 < 32.
"+S" Length-minus-one field of cins32/exts32 or cins/exts aliasing
cint32/exts32. Enforces non-negative value and that
pos + lenm1 < 32 or pos + lenm1 < 64 depending whether previous
position field is "+p" or "+P".
Loongson-3A:
"+a" 8-bit signed offset in bit 6 (OP_*_OFFSET_A)
"+b" 8-bit signed offset in bit 3 (OP_*_OFFSET_B)
"+c" 9-bit signed offset in bit 6 (OP_*_OFFSET_C)
"+z" 5-bit rz register (OP_*_RZ)
"+Z" 5-bit fz register (OP_*_FZ)
Other:
"()" parens surrounding optional value
"," separates operands
"[]" brackets around index for vector-op scalar operand specifier (vr5400)
"+" Start of extension sequence.
Characters used so far, for quick reference when adding more:
"1234567890"
"%[]<>(),+:'@!$*&"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklopqrstuvwxz"
Extension character sequences used so far ("+" followed by the
following), for quick reference when adding more:
"1234"
"ABCDEFGHIPQSTXZ"
"abcpstxz"
*/
/* 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
/* Not to be placed in a branch delay slot, either architecturally
or for ease of handling (such as with instructions that take a trap). */
#define INSN_NO_DELAY_SLOT 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 is actually a macro. It should be ignored by the
disassembler, and requires special treatment by the assembler. */
#define INSN_MACRO 0xffffffff
/* These are the bits which may be set in the pinfo2 field of an
instruction. */
/* Instruction is a simple alias (I.E. "move" for daddu/addu/or) */
#define INSN2_ALIAS 0x00000001
/* Instruction reads MDMX accumulator. */
#define INSN2_READ_MDMX_ACC 0x00000002
/* Instruction writes MDMX accumulator. */
#define INSN2_WRITE_MDMX_ACC 0x00000004
/* Macro uses single-precision floating-point instructions. This should
only be set for macros. For instructions, FP_S in pinfo carries the
same information. */
#define INSN2_M_FP_S 0x00000008
/* Macro uses double-precision floating-point instructions. This should
only be set for macros. For instructions, FP_D in pinfo carries the
same information. */
#define INSN2_M_FP_D 0x00000010
/* Modifies the general purpose register in OP_*_RZ. */
#define INSN2_WRITE_GPR_Z 0x00000020
/* Modifies the floating point register in OP_*_FZ. */
#define INSN2_WRITE_FPR_Z 0x00000040
/* Reads the general purpose register in OP_*_RZ. */
#define INSN2_READ_GPR_Z 0x00000080
/* Reads the floating point register in OP_*_FZ. */
#define INSN2_READ_FPR_Z 0x00000100
/* Reads the general purpose register in OP_*_RD. */
#define INSN2_READ_GPR_D 0x00000200
/* Instruction has a branch delay slot that requires a 16-bit instruction. */
#define INSN2_BRANCH_DELAY_16BIT 0x00000400
/* Instruction has a branch delay slot that requires a 32-bit instruction. */
#define INSN2_BRANCH_DELAY_32BIT 0x00000800
/* Modifies the general purpose register in MICROMIPSOP_*_RS. */
#define INSN2_WRITE_GPR_S 0x00001000
/* Reads the floating point register in MICROMIPSOP_*_FD. */
#define INSN2_READ_FPR_D 0x00002000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MB. */
#define INSN2_MOD_GPR_MB 0x00004000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MC. */
#define INSN2_MOD_GPR_MC 0x00008000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MD. */
#define INSN2_MOD_GPR_MD 0x00010000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_ME. */
#define INSN2_MOD_GPR_ME 0x00020000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MF. */
#define INSN2_MOD_GPR_MF 0x00040000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MG. */
#define INSN2_MOD_GPR_MG 0x00080000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MJ. */
#define INSN2_MOD_GPR_MJ 0x00100000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MP. */
#define INSN2_MOD_GPR_MP 0x00200000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MQ. */
#define INSN2_MOD_GPR_MQ 0x00400000
/* Reads/Writes the stack pointer ($29). */
#define INSN2_MOD_SP 0x00800000
/* Reads the RA ($31) register. */
#define INSN2_READ_GPR_31 0x01000000
/* Reads the global pointer ($28). */
#define INSN2_READ_GP 0x02000000
/* Reads the program counter ($pc). */
#define INSN2_READ_PC 0x04000000
/* Is an unconditional branch insn. */
#define INSN2_UNCOND_BRANCH 0x08000000
/* Is a conditional branch insn. */
#define INSN2_COND_BRANCH 0x10000000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MH/I. */
#define INSN2_MOD_GPR_MHI 0x20000000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MM. */
#define INSN2_MOD_GPR_MM 0x40000000
/* Reads/Writes the general purpose registers in MICROMIPSOP_*_MN. */
#define INSN2_MOD_GPR_MN 0x80000000
/* Masks used to mark instructions to indicate which MIPS ISA level
they were introduced in. INSN_ISA_MASK masks an enumeration that
specifies the base ISA level(s). The remainder of a 32-bit
word constructed using these macros is a bitmask of the remaining
INSN_* values below. */
#define INSN_ISA_MASK 0x0000000ful
/* We cannot start at zero due to ISA_UNKNOWN below. */
#define INSN_ISA1 1
#define INSN_ISA2 2
#define INSN_ISA3 3
#define INSN_ISA4 4
#define INSN_ISA5 5
#define INSN_ISA32 6
#define INSN_ISA32R2 7
#define INSN_ISA64 8
#define INSN_ISA64R2 9
/* Below this point the INSN_* values correspond to combinations of ISAs.
They are only for use in the opcodes table to indicate membership of
a combination of ISAs that cannot be expressed using the usual inclusion
ordering on the above INSN_* values. */
#define INSN_ISA3_32 10
#define INSN_ISA3_32R2 11
#define INSN_ISA4_32 12
#define INSN_ISA4_32R2 13
#define INSN_ISA5_32R2 14
/* Given INSN_ISA* values X and Y, where X ranges over INSN_ISA1 through
INSN_ISA5_32R2 and Y ranges over INSN_ISA1 through INSN_ISA64R2,
this table describes whether at least one of the ISAs described by X
is/are implemented by ISA Y. (Think of Y as the ISA level supported by
a particular core and X as the ISA level(s) at which a certain instruction
is defined.) The ISA(s) described by X is/are implemented by Y iff
(mips_isa_table[(Y & INSN_ISA_MASK) - 1] >> ((X & INSN_ISA_MASK) - 1)) & 1
is non-zero. */
static const unsigned int mips_isa_table[] =
{ 0x0001, 0x0003, 0x0607, 0x1e0f, 0x3e1f, 0x0a23, 0x3e63, 0x3ebf, 0x3fff };
/* Masks used for Chip specific instructions. */
#define INSN_CHIP_MASK 0xc3ff0c20
/* Cavium Networks Octeon instructions. */
#define INSN_OCTEON 0x00000800
/* Masks used for MIPS-defined ASEs. */
#define INSN_ASE_MASK 0x3c00f000
/* DSP ASE */
#define INSN_DSP 0x00001000
#define INSN_DSP64 0x00002000
/* 0x00004000 is unused. */
/* MIPS-3D ASE */
#define INSN_MIPS3D 0x00008000
/* MIPS R4650 instruction. */
#define INSN_4650 0x00010000
/* LSI R4010 instruction. */
#define INSN_4010 0x00020000
/* NEC VR4100 instruction. */
#define INSN_4100 0x00040000
/* Toshiba R3900 instruction. */
#define INSN_3900 0x00080000
/* MIPS R10000 instruction. */
#define INSN_10000 0x00100000
/* Broadcom SB-1 instruction. */
#define INSN_SB1 0x00200000
/* NEC VR4111/VR4181 instruction. */
#define INSN_4111 0x00400000
/* NEC VR4120 instruction. */
#define INSN_4120 0x00800000
/* NEC VR5400 instruction. */
#define INSN_5400 0x01000000
/* NEC VR5500 instruction. */
#define INSN_5500 0x02000000
/* MDMX ASE */
#define INSN_MDMX 0x04000000
/* MT ASE */
#define INSN_MT 0x08000000
/* SmartMIPS ASE */
#define INSN_SMARTMIPS 0x10000000
/* DSP R2 ASE */
#define INSN_DSPR2 0x20000000
/* ST Microelectronics Loongson 2E. */
#define INSN_LOONGSON_2E 0x40000000
/* ST Microelectronics Loongson 2F. */
#define INSN_LOONGSON_2F 0x80000000
/* Loongson 3A. */
#define INSN_LOONGSON_3A 0x00000400
/* RMI Xlr instruction */
#define INSN_XLR 0x00000020
/* MIPS ISA defines, use instead of hardcoding ISA level. */
#define ISA_UNKNOWN 0 /* Gas internal use. */
#define ISA_MIPS1 INSN_ISA1
#define ISA_MIPS2 INSN_ISA2
#define ISA_MIPS3 INSN_ISA3
#define ISA_MIPS4 INSN_ISA4
#define ISA_MIPS5 INSN_ISA5
#define ISA_MIPS32 INSN_ISA32
#define ISA_MIPS64 INSN_ISA64
#define ISA_MIPS32R2 INSN_ISA32R2
#define ISA_MIPS64R2 INSN_ISA64R2
/* CPU defines, use instead of hardcoding processor number. Keep this
in sync with bfd/archures.c in order for machine selection to work. */
#define CPU_UNKNOWN 0 /* Gas internal use. */
#define CPU_R3000 3000
#define CPU_R3900 3900
#define CPU_R4000 4000
#define CPU_R4010 4010
#define CPU_VR4100 4100
#define CPU_R4111 4111
#define CPU_VR4120 4120
#define CPU_R4300 4300
#define CPU_R4400 4400
#define CPU_R4600 4600
#define CPU_R4650 4650
#define CPU_R5000 5000
#define CPU_VR5400 5400
#define CPU_VR5500 5500
#define CPU_R6000 6000
#define CPU_RM7000 7000
#define CPU_R8000 8000
#define CPU_RM9000 9000
#define CPU_R10000 10000
#define CPU_R12000 12000
#define CPU_R14000 14000
#define CPU_R16000 16000
#define CPU_MIPS16 16
#define CPU_MIPS32 32
#define CPU_MIPS32R2 33
#define CPU_MIPS5 5
#define CPU_MIPS64 64
#define CPU_MIPS64R2 65
#define CPU_SB1 12310201 /* octal 'SB', 01. */
#define CPU_LOONGSON_2E 3001
#define CPU_LOONGSON_2F 3002
#define CPU_LOONGSON_3A 3003
#define CPU_OCTEON 6501
#define CPU_XLR 887682 /* decimal 'XLR' */
/* 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/ASE bitmask to test against; and CPU is the CPU specific ISA to
test, or zero if no CPU specific ISA test is desired. */
#define OPCODE_IS_MEMBER(insn, isa, cpu) \
(((isa & INSN_ISA_MASK) != 0 \
&& ((insn)->membership & INSN_ISA_MASK) != 0 \
&& ((mips_isa_table [(isa & INSN_ISA_MASK) - 1] >> \
(((insn)->membership & INSN_ISA_MASK) - 1)) & 1) != 0) \
|| ((isa & ~INSN_ISA_MASK) \
& ((insn)->membership & ~INSN_ISA_MASK)) != 0 \
|| (cpu == CPU_R4650 && ((insn)->membership & INSN_4650) != 0) \
|| (cpu == CPU_RM7000 && ((insn)->membership & INSN_4650) != 0) \
|| (cpu == CPU_RM9000 && ((insn)->membership & INSN_4650) != 0) \
|| (cpu == CPU_R4010 && ((insn)->membership & INSN_4010) != 0) \
|| (cpu == CPU_VR4100 && ((insn)->membership & INSN_4100) != 0) \
|| (cpu == CPU_R3900 && ((insn)->membership & INSN_3900) != 0) \
|| ((cpu == CPU_R10000 || cpu == CPU_R12000 || cpu == CPU_R14000 \
|| cpu == CPU_R16000) \
&& ((insn)->membership & INSN_10000) != 0) \
|| (cpu == CPU_SB1 && ((insn)->membership & INSN_SB1) != 0) \
|| (cpu == CPU_R4111 && ((insn)->membership & INSN_4111) != 0) \
|| (cpu == CPU_VR4120 && ((insn)->membership & INSN_4120) != 0) \
|| (cpu == CPU_VR5400 && ((insn)->membership & INSN_5400) != 0) \
|| (cpu == CPU_VR5500 && ((insn)->membership & INSN_5500) != 0) \
|| (cpu == CPU_LOONGSON_2E \
&& ((insn)->membership & INSN_LOONGSON_2E) != 0) \
|| (cpu == CPU_LOONGSON_2F \
&& ((insn)->membership & INSN_LOONGSON_2F) != 0) \
|| (cpu == CPU_LOONGSON_3A \
&& ((insn)->membership & INSN_LOONGSON_3A) != 0) \
|| (cpu == CPU_OCTEON \
&& ((insn)->membership & INSN_OCTEON) != 0) \
|| (cpu == CPU_XLR && ((insn)->membership & INSN_XLR) != 0) \
|| 0) /* Please keep this term for easier source merging. */
/* 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_BALIGN,
M_BC1FL,
M_BC1TL,
M_BC2FL,
M_BC2TL,
M_BEQ,
M_BEQ_I,
M_BEQL,
M_BEQL_I,
M_BGE,
M_BGEL,
M_BGE_I,
M_BGEL_I,
M_BGEU,
M_BGEUL,
M_BGEU_I,
M_BGEUL_I,
M_BGEZ,
M_BGEZL,
M_BGEZALL,
M_BGT,
M_BGTL,
M_BGT_I,
M_BGTL_I,
M_BGTU,
M_BGTUL,
M_BGTU_I,
M_BGTUL_I,
M_BGTZ,
M_BGTZL,
M_BLE,
M_BLEL,
M_BLE_I,
M_BLEL_I,
M_BLEU,
M_BLEUL,
M_BLEU_I,
M_BLEUL_I,
M_BLEZ,
M_BLEZL,
M_BLT,
M_BLTL,
M_BLT_I,
M_BLTL_I,
M_BLTU,
M_BLTUL,
M_BLTU_I,
M_BLTUL_I,
M_BLTZ,
M_BLTZL,
M_BLTZALL,
M_BNE,
M_BNEL,
M_BNE_I,
M_BNEL_I,
M_CACHE_AB,
M_CACHE_OB,
M_DABS,
M_DADD_I,
M_DADDU_I,
M_DDIV_3,
M_DDIV_3I,
M_DDIVU_3,
M_DDIVU_3I,
M_DEXT,
M_DINS,
M_DIV_3,
M_DIV_3I,
M_DIVU_3,
M_DIVU_3I,
M_DLA_AB,
M_DLCA_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_JALS_1,
M_JALS_2,
M_JALS_A,
M_L_DOB,
M_L_DAB,
M_LA_AB,
M_LB_A,
M_LB_AB,
M_LBU_A,
M_LBU_AB,
M_LCA_AB,
M_LD_A,
M_LD_OB,
M_LD_AB,
M_LDC1_AB,
M_LDC2_AB,
M_LDC2_OB,
M_LDC3_AB,
M_LDL_AB,
M_LDL_OB,
M_LDM_AB,
M_LDM_OB,
M_LDP_AB,
M_LDP_OB,
M_LDR_AB,
M_LDR_OB,
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_LL_OB,
M_LLD_AB,
M_LLD_OB,
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_LWC2_OB,
M_LWC3_A,
M_LWC3_AB,
M_LWL_A,
M_LWL_AB,
M_LWL_OB,
M_LWM_AB,
M_LWM_OB,
M_LWP_AB,
M_LWP_OB,
M_LWR_A,
M_LWR_AB,
M_LWR_OB,
M_LWU_AB,
M_LWU_OB,
M_MSGSND,
M_MSGLD,
M_MSGLD_T,
M_MSGWAIT,
M_MSGWAIT_T,
M_MOVE,
M_MUL,
M_MUL_I,
M_MULO,
M_MULO_I,
M_MULOU,
M_MULOU_I,
M_NOR_I,
M_OR_I,
M_PREF_AB,
M_PREF_OB,
M_REM_3,
M_REM_3I,
M_REMU_3,
M_REMU_3I,
M_DROL,
M_ROL,
M_DROL_I,
M_ROL_I,
M_DROR,
M_ROR,
M_DROR_I,
M_ROR_I,
M_S_DA,
M_S_DOB,
M_S_DAB,
M_S_S,
M_SC_AB,
M_SC_OB,
M_SCD_AB,
M_SCD_OB,
M_SD_A,
M_SD_OB,
M_SD_AB,
M_SDC1_AB,
M_SDC2_AB,
M_SDC2_OB,
M_SDC3_AB,
M_SDL_AB,
M_SDL_OB,
M_SDM_AB,
M_SDM_OB,
M_SDP_AB,
M_SDP_OB,
M_SDR_AB,
M_SDR_OB,
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_SWC2_OB,
M_SWC3_A,
M_SWC3_AB,
M_SWL_A,
M_SWL_AB,
M_SWL_OB,
M_SWM_AB,
M_SWM_OB,
M_SWP_AB,
M_SWP_OB,
M_SWR_A,
M_SWR_AB,
M_SWR_OB,
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 a MIPS16
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)
"m" 7 bit register list for save instruction (18 bit extended)
"M" 7 bit register list for restore instruction (18 bit extended)
*/
/* Save/restore encoding for the args field when all 4 registers are
either saved as arguments or saved/restored as statics. */
#define MIPS16_ALL_ARGS 0xe
#define MIPS16_ALL_STATICS 0xb
/* 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 an unconditional branch insn. */
#define MIPS16_INSN_UNCOND_BRANCH 0x00008000
/* Is a conditional branch insn. */
#define MIPS16_INSN_COND_BRANCH 0x00010000
/* The following flags have the same value for the mips16 opcode
table:
INSN_ISA3
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
FP_D (never used)
*/
extern const struct mips_opcode mips16_opcodes[];
extern const int bfd_mips16_num_opcodes;
/* These are the bit masks and shift counts used for the different fields
in the microMIPS instruction formats. No masks are provided for the
fixed portions of an instruction, since they are not needed. */
#define MICROMIPSOP_MASK_IMMEDIATE 0xffff
#define MICROMIPSOP_SH_IMMEDIATE 0
#define MICROMIPSOP_MASK_DELTA 0xffff
#define MICROMIPSOP_SH_DELTA 0
#define MICROMIPSOP_MASK_CODE10 0x3ff
#define MICROMIPSOP_SH_CODE10 16 /* 10-bit wait code. */
#define MICROMIPSOP_MASK_TRAP 0xf
#define MICROMIPSOP_SH_TRAP 12 /* 4-bit trap code. */
#define MICROMIPSOP_MASK_SHAMT 0x1f
#define MICROMIPSOP_SH_SHAMT 11
#define MICROMIPSOP_MASK_TARGET 0x3ffffff
#define MICROMIPSOP_SH_TARGET 0
#define MICROMIPSOP_MASK_EXTLSB 0x1f /* "ext" LSB. */
#define MICROMIPSOP_SH_EXTLSB 6
#define MICROMIPSOP_MASK_EXTMSBD 0x1f /* "ext" MSBD. */
#define MICROMIPSOP_SH_EXTMSBD 11
#define MICROMIPSOP_MASK_INSMSB 0x1f /* "ins" MSB. */
#define MICROMIPSOP_SH_INSMSB 11
#define MICROMIPSOP_MASK_CODE 0x3ff
#define MICROMIPSOP_SH_CODE 16 /* 10-bit higher break code. */
#define MICROMIPSOP_MASK_CODE2 0x3ff
#define MICROMIPSOP_SH_CODE2 6 /* 10-bit lower break code. */
#define MICROMIPSOP_MASK_CACHE 0x1f
#define MICROMIPSOP_SH_CACHE 21 /* 5-bit cache op. */
#define MICROMIPSOP_MASK_SEL 0x7
#define MICROMIPSOP_SH_SEL 11
#define MICROMIPSOP_MASK_OFFSET12 0xfff
#define MICROMIPSOP_SH_OFFSET12 0
#define MICROMIPSOP_MASK_STYPE 0x1f
#define MICROMIPSOP_SH_STYPE 16
#define MICROMIPSOP_MASK_OFFSET10 0x3ff
#define MICROMIPSOP_SH_OFFSET10 6
#define MICROMIPSOP_MASK_RS 0x1f
#define MICROMIPSOP_SH_RS 16
#define MICROMIPSOP_MASK_RT 0x1f
#define MICROMIPSOP_SH_RT 21
#define MICROMIPSOP_MASK_RD 0x1f
#define MICROMIPSOP_SH_RD 11
#define MICROMIPSOP_MASK_FS 0x1f
#define MICROMIPSOP_SH_FS 16
#define MICROMIPSOP_MASK_FT 0x1f
#define MICROMIPSOP_SH_FT 21
#define MICROMIPSOP_MASK_FD 0x1f
#define MICROMIPSOP_SH_FD 11
#define MICROMIPSOP_MASK_FR 0x1f
#define MICROMIPSOP_SH_FR 6
#define MICROMIPSOP_MASK_RS3 0x1f
#define MICROMIPSOP_SH_RS3 6
#define MICROMIPSOP_MASK_PREFX 0x1f
#define MICROMIPSOP_SH_PREFX 11
#define MICROMIPSOP_MASK_BCC 0x7
#define MICROMIPSOP_SH_BCC 18
#define MICROMIPSOP_MASK_CCC 0x7
#define MICROMIPSOP_SH_CCC 13
#define MICROMIPSOP_MASK_COPZ 0x7fffff
#define MICROMIPSOP_SH_COPZ 3
#define MICROMIPSOP_MASK_MB 0x7
#define MICROMIPSOP_SH_MB 23
#define MICROMIPSOP_MASK_MC 0x7
#define MICROMIPSOP_SH_MC 4
#define MICROMIPSOP_MASK_MD 0x7
#define MICROMIPSOP_SH_MD 7
#define MICROMIPSOP_MASK_ME 0x7
#define MICROMIPSOP_SH_ME 1
#define MICROMIPSOP_MASK_MF 0x7
#define MICROMIPSOP_SH_MF 3
#define MICROMIPSOP_MASK_MG 0x7
#define MICROMIPSOP_SH_MG 0
#define MICROMIPSOP_MASK_MH 0x7
#define MICROMIPSOP_SH_MH 7
#define MICROMIPSOP_MASK_MI 0x7
#define MICROMIPSOP_SH_MI 7
#define MICROMIPSOP_MASK_MJ 0x1f
#define MICROMIPSOP_SH_MJ 0
#define MICROMIPSOP_MASK_ML 0x7
#define MICROMIPSOP_SH_ML 4
#define MICROMIPSOP_MASK_MM 0x7
#define MICROMIPSOP_SH_MM 1
#define MICROMIPSOP_MASK_MN 0x7
#define MICROMIPSOP_SH_MN 4
#define MICROMIPSOP_MASK_MP 0x1f
#define MICROMIPSOP_SH_MP 5
#define MICROMIPSOP_MASK_MQ 0x7
#define MICROMIPSOP_SH_MQ 7
#define MICROMIPSOP_MASK_IMMA 0x7f
#define MICROMIPSOP_SH_IMMA 0
#define MICROMIPSOP_MASK_IMMB 0x7
#define MICROMIPSOP_SH_IMMB 1
#define MICROMIPSOP_MASK_IMMC 0xf
#define MICROMIPSOP_SH_IMMC 0
#define MICROMIPSOP_MASK_IMMD 0x3ff
#define MICROMIPSOP_SH_IMMD 0
#define MICROMIPSOP_MASK_IMME 0x7f
#define MICROMIPSOP_SH_IMME 0
#define MICROMIPSOP_MASK_IMMF 0xf
#define MICROMIPSOP_SH_IMMF 0
#define MICROMIPSOP_MASK_IMMG 0xf
#define MICROMIPSOP_SH_IMMG 0
#define MICROMIPSOP_MASK_IMMH 0xf
#define MICROMIPSOP_SH_IMMH 0
#define MICROMIPSOP_MASK_IMMI 0x7f
#define MICROMIPSOP_SH_IMMI 0
#define MICROMIPSOP_MASK_IMMJ 0xf
#define MICROMIPSOP_SH_IMMJ 0
#define MICROMIPSOP_MASK_IMML 0xf
#define MICROMIPSOP_SH_IMML 0
#define MICROMIPSOP_MASK_IMMM 0x7
#define MICROMIPSOP_SH_IMMM 1
#define MICROMIPSOP_MASK_IMMN 0x3
#define MICROMIPSOP_SH_IMMN 4
#define MICROMIPSOP_MASK_IMMO 0xf
#define MICROMIPSOP_SH_IMMO 0
#define MICROMIPSOP_MASK_IMMP 0x1f
#define MICROMIPSOP_SH_IMMP 0
#define MICROMIPSOP_MASK_IMMQ 0x7fffff
#define MICROMIPSOP_SH_IMMQ 0
#define MICROMIPSOP_MASK_IMMU 0x1f
#define MICROMIPSOP_SH_IMMU 0
#define MICROMIPSOP_MASK_IMMW 0x3f
#define MICROMIPSOP_SH_IMMW 1
#define MICROMIPSOP_MASK_IMMX 0xf
#define MICROMIPSOP_SH_IMMX 1
#define MICROMIPSOP_MASK_IMMY 0x1ff
#define MICROMIPSOP_SH_IMMY 1
/* Placeholders for fields that only exist in the traditional 32-bit
instruction encoding; see the comment above for details. */
#define MICROMIPSOP_MASK_CODE20 0
#define MICROMIPSOP_SH_CODE20 0
#define MICROMIPSOP_MASK_PERFREG 0
#define MICROMIPSOP_SH_PERFREG 0
#define MICROMIPSOP_MASK_CODE19 0
#define MICROMIPSOP_SH_CODE19 0
#define MICROMIPSOP_MASK_ALN 0
#define MICROMIPSOP_SH_ALN 0
#define MICROMIPSOP_MASK_VECBYTE 0
#define MICROMIPSOP_SH_VECBYTE 0
#define MICROMIPSOP_MASK_VECALIGN 0
#define MICROMIPSOP_SH_VECALIGN 0
#define MICROMIPSOP_MASK_DSPACC 0
#define MICROMIPSOP_SH_DSPACC 0
#define MICROMIPSOP_MASK_DSPACC_S 0
#define MICROMIPSOP_SH_DSPACC_S 0
#define MICROMIPSOP_MASK_DSPSFT 0
#define MICROMIPSOP_SH_DSPSFT 0
#define MICROMIPSOP_MASK_DSPSFT_7 0
#define MICROMIPSOP_SH_DSPSFT_7 0
#define MICROMIPSOP_MASK_SA3 0
#define MICROMIPSOP_SH_SA3 0
#define MICROMIPSOP_MASK_SA4 0
#define MICROMIPSOP_SH_SA4 0
#define MICROMIPSOP_MASK_IMM8 0
#define MICROMIPSOP_SH_IMM8 0
#define MICROMIPSOP_MASK_IMM10 0
#define MICROMIPSOP_SH_IMM10 0
#define MICROMIPSOP_MASK_WRDSP 0
#define MICROMIPSOP_SH_WRDSP 0
#define MICROMIPSOP_MASK_RDDSP 0
#define MICROMIPSOP_SH_RDDSP 0
#define MICROMIPSOP_MASK_BP 0
#define MICROMIPSOP_SH_BP 0
#define MICROMIPSOP_MASK_MT_U 0
#define MICROMIPSOP_SH_MT_U 0
#define MICROMIPSOP_MASK_MT_H 0
#define MICROMIPSOP_SH_MT_H 0
#define MICROMIPSOP_MASK_MTACC_T 0
#define MICROMIPSOP_SH_MTACC_T 0
#define MICROMIPSOP_MASK_MTACC_D 0
#define MICROMIPSOP_SH_MTACC_D 0
#define MICROMIPSOP_MASK_BBITIND 0
#define MICROMIPSOP_SH_BBITIND 0
#define MICROMIPSOP_MASK_CINSPOS 0
#define MICROMIPSOP_SH_CINSPOS 0
#define MICROMIPSOP_MASK_CINSLM1 0
#define MICROMIPSOP_SH_CINSLM1 0
#define MICROMIPSOP_MASK_SEQI 0
#define MICROMIPSOP_SH_SEQI 0
#define MICROMIPSOP_SH_OFFSET_A 0
#define MICROMIPSOP_MASK_OFFSET_A 0
#define MICROMIPSOP_SH_OFFSET_B 0
#define MICROMIPSOP_MASK_OFFSET_B 0
#define MICROMIPSOP_SH_OFFSET_C 0
#define MICROMIPSOP_MASK_OFFSET_C 0
#define MICROMIPSOP_SH_RZ 0
#define MICROMIPSOP_MASK_RZ 0
#define MICROMIPSOP_SH_FZ 0
#define MICROMIPSOP_MASK_FZ 0
/* These are the characters which may appears in the args field of a microMIPS
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.
The followings are for 16-bit microMIPS instructions.
"ma" must be $28
"mc" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MC) at bit 4
The same register used as both source and target.
"md" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MD) at bit 7
"me" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_ME) at bit 1
The same register used as both source and target.
"mf" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MF) at bit 3
"mg" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MG) at bit 0
"mh" MIPS registers 4, 5, 6 (MICROMIPSOP_*_MH) at bit 7
"mi" MIPS registers 5, 6, 7, 21, 22 (MICROMIPSOP_*_MI) at bit 7
("mh" and "mi" form a valid 3-bit register pair)
"mj" 5-bit MIPS registers (MICROMIPSOP_*_MJ) at bit 0
"ml" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_ML) at bit 4
"mm" 3-bit MIPS registers 0, 2, 3, 16-20 (MICROMIPSOP_*_MM) at bit 1
"mn" 3-bit MIPS registers 0, 2, 3, 16-20 (MICROMIPSOP_*_MN) at bit 4
"mp" 5-bit MIPS registers (MICROMIPSOP_*_MP) at bit 5
"mq" 3-bit MIPS registers 0, 2-7, 17 (MICROMIPSOP_*_MQ) at bit 7
"mr" must be program counter
"ms" must be $29
"mt" must be the same as the previous register
"mx" must be the same as the destination register
"my" must be $31
"mz" must be $0
"mA" 7-bit immediate (-64 .. 63) << 2 (MICROMIPSOP_*_IMMA)
"mB" 3-bit immediate (-1, 1, 4, 8, 12, 16, 20, 24) (MICROMIPSOP_*_IMMB)
"mC" 4-bit immediate (1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 128, 255,
32768, 65535) (MICROMIPSOP_*_IMMC)
"mD" 10-bit branch address (-512 .. 511) << 1 (MICROMIPSOP_*_IMMD)
"mE" 7-bit branch address (-64 .. 63) << 1 (MICROMIPSOP_*_IMME)
"mF" 4-bit immediate (0 .. 15) (MICROMIPSOP_*_IMMF)
"mG" 4-bit immediate (-1 .. 14) (MICROMIPSOP_*_IMMG)
"mH" 4-bit immediate (0 .. 15) << 1 (MICROMIPSOP_*_IMMH)
"mI" 7-bit immediate (-1 .. 126) (MICROMIPSOP_*_IMMI)
"mJ" 4-bit immediate (0 .. 15) << 2 (MICROMIPSOP_*_IMMJ)
"mL" 4-bit immediate (0 .. 15) (MICROMIPSOP_*_IMML)
"mM" 3-bit immediate (1 .. 8) (MICROMIPSOP_*_IMMM)
"mN" 2-bit immediate (0 .. 3) for register list (MICROMIPSOP_*_IMMN)
"mO" 4-bit immediate (0 .. 15) (MICROMIPSOP_*_IMML)
"mP" 5-bit immediate (0 .. 31) << 2 (MICROMIPSOP_*_IMMP)
"mU" 5-bit immediate (0 .. 31) << 2 (MICROMIPSOP_*_IMMU)
"mW" 6-bit immediate (0 .. 63) << 2 (MICROMIPSOP_*_IMMW)
"mX" 4-bit immediate (-8 .. 7) (MICROMIPSOP_*_IMMX)
"mY" 9-bit immediate (-258 .. -3, 2 .. 257) << 2 (MICROMIPSOP_*_IMMY)
"mZ" must be zero
In most cases 32-bit microMIPS instructions use the same characters
as MIPS (with ADDIUPC being a notable exception, but there are some
others too).
"." 10-bit signed offset/number (MICROMIPSOP_*_OFFSET10)
"1" 5-bit sync type (MICROMIPSOP_*_SHAMT)
"<" 5-bit shift amount (MICROMIPSOP_*_SHAMT)
">" shift amount between 32 and 63, stored after subtracting 32
(MICROMIPSOP_*_SHAMT)
"|" 4-bit trap code (MICROMIPSOP_*_TRAP)
"~" 12-bit signed offset (MICROMIPSOP_*_OFFSET12)
"a" 26-bit target address (MICROMIPSOP_*_TARGET)
"b" 5-bit base register (MICROMIPSOP_*_RS)
"c" 10-bit higher breakpoint code (MICROMIPSOP_*_CODE)
"d" 5-bit destination register specifier (MICROMIPSOP_*_RD)
"h" 5-bit PREFX hint (MICROMIPSOP_*_PREFX)
"i" 16 bit unsigned immediate (MICROMIPSOP_*_IMMEDIATE)
"j" 16-bit signed immediate (MICROMIPSOP_*_DELTA)
"k" 5-bit cache opcode in target register position (MICROMIPSOP_*_CACHE)
"n" register list for 32-bit LWM/SWM instruction (MICROMIPSOP_*_RT)
"o" 16-bit signed offset (MICROMIPSOP_*_DELTA)
"p" 16-bit PC-relative branch target address (MICROMIPSOP_*_DELTA)
"q" 10-bit lower breakpoint code (MICROMIPSOP_*_CODE2)
"r" 5-bit same register used as both source and target (MICROMIPSOP_*_RS)
"s" 5-bit source register specifier (MICROMIPSOP_*_RS)
"t" 5-bit target register (MICROMIPSOP_*_RT)
"u" 16-bit upper 16 bits of address (MICROMIPSOP_*_IMMEDIATE)
"v" 5-bit same register used as both source and destination
(MICROMIPSOP_*_RS)
"w" 5-bit same register used as both target and destination
(MICROMIPSOP_*_RT)
"y" 5-bit source 3 register for ALNV.PS (MICROMIPSOP_*_RS3)
"z" must be zero register
"C" 23-bit coprocessor function code (MICROMIPSOP_*_COPZ)
"B" 8-bit syscall/wait function code (MICROMIPSOP_*_CODE10)
"K" 5-bit Hardware Register (RDHWR instruction) (MICROMIPSOP_*_RS)
"+A" 5-bit INS/EXT/DINS/DEXT/DINSM/DEXTM position, which becomes
LSB (MICROMIPSOP_*_EXTLSB).
Enforces: 0 <= pos < 32.
"+B" 5-bit INS/DINS size, which becomes MSB (MICROMIPSOP_*_INSMSB).
Requires that "+A" or "+E" occur first to set position.
Enforces: 0 < (pos+size) <= 32.
"+C" 5-bit EXT/DEXT size, which becomes MSBD (MICROMIPSOP_*_EXTMSBD).
Requires that "+A" or "+E" occur first to set position.
Enforces: 0 < (pos+size) <= 32.
(Also used by DEXT w/ different limits, but limits for
that are checked by the M_DEXT macro.)
"+E" 5-bit DINSU/DEXTU position, which becomes LSB-32 (MICROMIPSOP_*_EXTLSB).
Enforces: 32 <= pos < 64.
"+F" 5-bit DINSM/DINSU size, which becomes MSB-32 (MICROMIPSOP_*_INSMSB).
Requires that "+A" or "+E" occur first to set position.
Enforces: 32 < (pos+size) <= 64.
"+G" 5-bit DEXTM size, which becomes MSBD-32 (MICROMIPSOP_*_EXTMSBD).
Requires that "+A" or "+E" occur first to set position.
Enforces: 32 < (pos+size) <= 64.
"+H" 5-bit DEXTU size, which becomes MSBD (MICROMIPSOP_*_EXTMSBD).
Requires that "+A" or "+E" occur first to set position.
Enforces: 32 < (pos+size) <= 64.
PC-relative addition (ADDIUPC) instruction:
"mQ" 23-bit offset (-4194304 .. 4194303) << 2 (MICROMIPSOP_*_IMMQ)
"mb" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MB) at bit 23
Floating point instructions:
"D" 5-bit destination register (MICROMIPSOP_*_FD)
"M" 3-bit compare condition code (MICROMIPSOP_*_CCC)
"N" 3-bit branch condition code (MICROMIPSOP_*_BCC)
"R" 5-bit fr source 3 register (MICROMIPSOP_*_FR)
"S" 5-bit fs source 1 register (MICROMIPSOP_*_FS)
"T" 5-bit ft source 2 register (MICROMIPSOP_*_FT)
"V" 5-bit same register used as floating source and destination or target
(MICROMIPSOP_*_FS)
Coprocessor instructions:
"E" 5-bit target register (MICROMIPSOP_*_RT)
"G" 5-bit destination register (MICROMIPSOP_*_RD)
"H" 3-bit sel field for (D)MTC* and (D)MFC* (MICROMIPSOP_*_SEL)
"+D" combined destination register ("G") and sel ("H") for CP0 ops,
for pretty-printing in disassembly only
Macro instructions:
"A" general 32 bit expression
"I" 32-bit immediate (value placed in imm_expr).
"+I" 32-bit immediate (value placed in imm2_expr).
"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
"+" start of extension sequence
"m" start of microMIPS extension sequence
Characters used so far, for quick reference when adding more:
"1234567890"
"<>(),+.|~"
"ABCDEFGHI KLMN RST V "
"abcd f hijklmnopqrstuvw yz"
Extension character sequences used so far ("+" followed by the
following), for quick reference when adding more:
""
""
"ABCDEFGHI"
""
Extension character sequences used so far ("m" followed by the
following), for quick reference when adding more:
""
""
" BCDEFGHIJ LMNOPQ U WXYZ"
" bcdefghij lmn pq st xyz"
*/
extern const struct mips_opcode micromips_opcodes[];
extern const int bfd_micromips_num_opcodes;
/* A NOP insn impemented as "or at,at,zero".
Used to implement -mfix-loongson2f. */
#define LOONGSON2F_NOP_INSN 0x00200825
#endif /* _MIPS_H_ */
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