1 /* mips.h. Mips opcode list for GDB, the GNU debugger.
2 Copyright (C) 1993-2014 Free Software Foundation, Inc.
3 Contributed by Ralph Campbell and OSF
4 Commented and modified by Ian Lance Taylor, Cygnus Support
6 This file is part of GDB, GAS, and the GNU binutils.
8 GDB, GAS, and the GNU binutils are free software; you can redistribute
9 them and/or modify them under the terms of the GNU General Public
10 License as published by the Free Software Foundation; either version 3,
11 or (at your option) any later version.
13 GDB, GAS, and the GNU binutils are distributed in the hope that they
14 will be useful, but WITHOUT ANY WARRANTY; without even the implied
15 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 the GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this file; see the file COPYING3. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
28 /* These are bit masks and shift counts to use to access the various
29 fields of an instruction. To retrieve the X field of an
30 instruction, use the expression
31 (i >> OP_SH_X) & OP_MASK_X
32 To set the same field (to j), use
33 i = (i &~ (OP_MASK_X << OP_SH_X)) | (j << OP_SH_X)
35 Make sure you use fields that are appropriate for the instruction,
38 The 'i' format uses OP, RS, RT and IMMEDIATE.
40 The 'j' format uses OP and TARGET.
42 The 'r' format uses OP, RS, RT, RD, SHAMT and FUNCT.
44 The 'b' format uses OP, RS, RT and DELTA.
46 The floating point 'i' format uses OP, RS, RT and IMMEDIATE.
48 The floating point 'r' format uses OP, FMT, FT, FS, FD and FUNCT.
50 A breakpoint instruction uses OP, CODE and SPEC (10 bits of the
51 breakpoint instruction are not defined; Kane says the breakpoint
52 code field in BREAK is 20 bits; yet MIPS assemblers and debuggers
53 only use ten bits). An optional two-operand form of break/sdbbp
54 allows the lower ten bits to be set too, and MIPS32 and later
55 architectures allow 20 bits to be set with a signal operand
58 The syscall instruction uses CODE20.
60 The general coprocessor instructions use COPZ. */
62 #define OP_MASK_OP 0x3f
64 #define OP_MASK_RS 0x1f
66 #define OP_MASK_FR 0x1f
68 #define OP_MASK_FMT 0x1f
70 #define OP_MASK_BCC 0x7
72 #define OP_MASK_CODE 0x3ff
74 #define OP_MASK_CODE2 0x3ff
76 #define OP_MASK_RT 0x1f
78 #define OP_MASK_FT 0x1f
80 #define OP_MASK_CACHE 0x1f
81 #define OP_SH_CACHE 16
82 #define OP_MASK_RD 0x1f
84 #define OP_MASK_FS 0x1f
86 #define OP_MASK_PREFX 0x1f
87 #define OP_SH_PREFX 11
88 #define OP_MASK_CCC 0x7
90 #define OP_MASK_CODE20 0xfffff /* 20 bit syscall/breakpoint code. */
91 #define OP_SH_CODE20 6
92 #define OP_MASK_SHAMT 0x1f
94 #define OP_MASK_EXTLSB OP_MASK_SHAMT
95 #define OP_SH_EXTLSB OP_SH_SHAMT
96 #define OP_MASK_STYPE OP_MASK_SHAMT
97 #define OP_SH_STYPE OP_SH_SHAMT
98 #define OP_MASK_FD 0x1f
100 #define OP_MASK_TARGET 0x3ffffff
101 #define OP_SH_TARGET 0
102 #define OP_MASK_COPZ 0x1ffffff
104 #define OP_MASK_IMMEDIATE 0xffff
105 #define OP_SH_IMMEDIATE 0
106 #define OP_MASK_DELTA 0xffff
107 #define OP_SH_DELTA 0
108 #define OP_MASK_FUNCT 0x3f
109 #define OP_SH_FUNCT 0
110 #define OP_MASK_SPEC 0x3f
112 #define OP_SH_LOCC 8 /* FP condition code. */
113 #define OP_SH_HICC 18 /* FP condition code. */
114 #define OP_MASK_CC 0x7
115 #define OP_SH_COP1NORM 25 /* Normal COP1 encoding. */
116 #define OP_MASK_COP1NORM 0x1 /* a single bit. */
117 #define OP_SH_COP1SPEC 21 /* COP1 encodings. */
118 #define OP_MASK_COP1SPEC 0xf
119 #define OP_MASK_COP1SCLR 0x4
120 #define OP_MASK_COP1CMP 0x3
121 #define OP_SH_COP1CMP 4
122 #define OP_SH_FORMAT 21 /* FP short format field. */
123 #define OP_MASK_FORMAT 0x7
124 #define OP_SH_TRUE 16
125 #define OP_MASK_TRUE 0x1
127 #define OP_MASK_GE 0x01
128 #define OP_SH_UNSIGNED 16
129 #define OP_MASK_UNSIGNED 0x1
130 #define OP_SH_HINT 16
131 #define OP_MASK_HINT 0x1f
132 #define OP_SH_MMI 0 /* Multimedia (parallel) op. */
133 #define OP_MASK_MMI 0x3f
134 #define OP_SH_MMISUB 6
135 #define OP_MASK_MMISUB 0x1f
136 #define OP_MASK_PERFREG 0x1f /* Performance monitoring. */
137 #define OP_SH_PERFREG 1
138 #define OP_SH_SEL 0 /* Coprocessor select field. */
139 #define OP_MASK_SEL 0x7 /* The sel field of mfcZ and mtcZ. */
140 #define OP_SH_CODE19 6 /* 19 bit wait code. */
141 #define OP_MASK_CODE19 0x7ffff
143 #define OP_MASK_ALN 0x7
144 #define OP_SH_VSEL 21
145 #define OP_MASK_VSEL 0x1f
146 #define OP_MASK_VECBYTE 0x7 /* Selector field is really 4 bits,
147 but 0x8-0xf don't select bytes. */
148 #define OP_SH_VECBYTE 22
149 #define OP_MASK_VECALIGN 0x7 /* Vector byte-align (alni.ob) op. */
150 #define OP_SH_VECALIGN 21
151 #define OP_MASK_INSMSB 0x1f /* "ins" MSB. */
152 #define OP_SH_INSMSB 11
153 #define OP_MASK_EXTMSBD 0x1f /* "ext" MSBD. */
154 #define OP_SH_EXTMSBD 11
157 #define OP_SH_DSPACC 11
158 #define OP_MASK_DSPACC 0x3
159 #define OP_SH_DSPACC_S 21
160 #define OP_MASK_DSPACC_S 0x3
161 #define OP_SH_DSPSFT 20
162 #define OP_MASK_DSPSFT 0x3f
163 #define OP_SH_DSPSFT_7 19
164 #define OP_MASK_DSPSFT_7 0x7f
166 #define OP_MASK_SA3 0x7
168 #define OP_MASK_SA4 0xf
169 #define OP_SH_IMM8 16
170 #define OP_MASK_IMM8 0xff
171 #define OP_SH_IMM10 16
172 #define OP_MASK_IMM10 0x3ff
173 #define OP_SH_WRDSP 11
174 #define OP_MASK_WRDSP 0x3f
175 #define OP_SH_RDDSP 16
176 #define OP_MASK_RDDSP 0x3f
178 #define OP_MASK_BP 0x3
182 #define OP_MASK_MT_U 0x1
184 #define OP_MASK_MT_H 0x1
185 #define OP_SH_MTACC_T 18
186 #define OP_MASK_MTACC_T 0x3
187 #define OP_SH_MTACC_D 13
188 #define OP_MASK_MTACC_D 0x3
191 #define OP_MASK_3BITPOS 0x7
192 #define OP_SH_3BITPOS 12
193 #define OP_MASK_OFFSET12 0xfff
194 #define OP_SH_OFFSET12 0
196 #define OP_OP_COP0 0x10
197 #define OP_OP_COP1 0x11
198 #define OP_OP_COP2 0x12
199 #define OP_OP_COP3 0x13
200 #define OP_OP_LWC1 0x31
201 #define OP_OP_LWC2 0x32
202 #define OP_OP_LWC3 0x33 /* a.k.a. pref */
203 #define OP_OP_LDC1 0x35
204 #define OP_OP_LDC2 0x36
205 #define OP_OP_LDC3 0x37 /* a.k.a. ld */
206 #define OP_OP_SWC1 0x39
207 #define OP_OP_SWC2 0x3a
208 #define OP_OP_SWC3 0x3b
209 #define OP_OP_SDC1 0x3d
210 #define OP_OP_SDC2 0x3e
211 #define OP_OP_SDC3 0x3f /* a.k.a. sd */
214 #define OP_MASK_CODE10 0x3ff
215 #define OP_SH_CODE10 11
217 /* Values in the 'VSEL' field. */
218 #define MDMX_FMTSEL_IMM_QH 0x1d
219 #define MDMX_FMTSEL_IMM_OB 0x1e
220 #define MDMX_FMTSEL_VEC_QH 0x15
221 #define MDMX_FMTSEL_VEC_OB 0x16
225 #define OP_MASK_UDI1 0x1f
227 #define OP_MASK_UDI2 0x3ff
229 #define OP_MASK_UDI3 0x7fff
231 #define OP_MASK_UDI4 0xfffff
234 #define OP_SH_BBITIND 16
235 #define OP_MASK_BBITIND 0x1f
236 #define OP_SH_CINSPOS 6
237 #define OP_MASK_CINSPOS 0x1f
238 #define OP_SH_CINSLM1 11
239 #define OP_MASK_CINSLM1 0x1f
241 #define OP_MASK_SEQI 0x3ff
244 #define OP_SH_OFFSET_A 6
245 #define OP_MASK_OFFSET_A 0xff
246 #define OP_SH_OFFSET_B 3
247 #define OP_MASK_OFFSET_B 0xff
248 #define OP_SH_OFFSET_C 6
249 #define OP_MASK_OFFSET_C 0x1ff
251 #define OP_MASK_RZ 0x1f
253 #define OP_MASK_FZ 0x1f
255 /* Every MICROMIPSOP_X definition requires a corresponding OP_X
256 definition, and vice versa. This simplifies various parts
257 of the operand handling in GAS. The fields below only exist
258 in the microMIPS encoding, so define each one to have an empty
260 #define OP_MASK_TRAP 0
262 #define OP_MASK_OFFSET10 0
263 #define OP_SH_OFFSET10 0
264 #define OP_MASK_RS3 0
292 #define OP_MASK_IMMA 0
294 #define OP_MASK_IMMB 0
296 #define OP_MASK_IMMC 0
298 #define OP_MASK_IMMF 0
300 #define OP_MASK_IMMG 0
302 #define OP_MASK_IMMH 0
304 #define OP_MASK_IMMI 0
306 #define OP_MASK_IMMJ 0
308 #define OP_MASK_IMML 0
310 #define OP_MASK_IMMM 0
312 #define OP_MASK_IMMN 0
314 #define OP_MASK_IMMO 0
316 #define OP_MASK_IMMP 0
318 #define OP_MASK_IMMQ 0
320 #define OP_MASK_IMMU 0
322 #define OP_MASK_IMMW 0
324 #define OP_MASK_IMMX 0
326 #define OP_MASK_IMMY 0
329 /* Enhanced VA Scheme */
330 #define OP_SH_EVAOFFSET 7
331 #define OP_MASK_EVAOFFSET 0x1ff
333 /* Enumerates the various types of MIPS operand. */
334 enum mips_operand_type {
335 /* Described by mips_int_operand. */
338 /* Described by mips_mapped_int_operand. */
341 /* Described by mips_msb_operand. */
344 /* Described by mips_reg_operand. */
347 /* Like OP_REG, but can be omitted if the register is the same as the
351 /* Described by mips_reg_pair_operand. */
354 /* Described by mips_pcrel_operand. */
357 /* A performance register. The field is 5 bits in size, but the supported
358 values are much more restricted. */
361 /* The final operand in a microMIPS ADDIUSP instruction. It mostly acts
362 as a normal 9-bit signed offset that is multiplied by four, but there
363 are four special cases:
371 /* The target of a (D)CLO or (D)CLZ instruction. The operand spans two
372 5-bit register fields, both of which must be set to the destination
376 /* A register list for a microMIPS LWM or SWM instruction. The operand
377 size determines whether the 16-bit or 32-bit encoding is required. */
380 /* The register list for an emulated MIPS16 ENTRY or EXIT instruction. */
383 /* The register list and frame size for a MIPS16 SAVE or RESTORE
385 OP_SAVE_RESTORE_LIST,
387 /* A 10-bit field VVVVVNNNNN used for octobyte and quadhalf instructions:
391 0EEE0 8 copies of $vN[E], OB format
392 0EE01 4 copies of $vN[E], QH format
393 10110 all 8 elements of $vN, OB format
394 10101 all 4 elements of $vN, QH format
395 11110 8 copies of immediate N, OB format
396 11101 4 copies of immediate N, QH format. */
399 /* A register operand that must match the destination register. */
402 /* A register operand that must match the previous register. */
405 /* $pc, which has no encoding in the architectural instruction. */
408 /* A 4-bit XYZW channel mask or 2-bit XYZW index; the size determines
412 /* Like OP_VU0_SUFFIX, but used when the operand's value has already
413 been set. Any suffix used here must match the previous value. */
416 /* An index selected by an integer, e.g. [1]. */
419 /* An index selected by a register, e.g. [$2]. */
423 /* Enumerates the types of MIPS register. */
424 enum mips_reg_operand_type {
425 /* General registers $0-$31. Software names like $at can also be used. */
428 /* Floating-point registers $f0-$f31. */
431 /* Coprocessor condition code registers $cc0-$cc7. FPU condition codes
432 can also be written $fcc0-$fcc7. */
435 /* FPRs used in a vector capacity. They can be written $f0-$f31
436 or $v0-$v31, although the latter form is not used for the VR5400
437 vector instructions. */
440 /* DSP accumulator registers $ac0-$ac3. */
443 /* Coprocessor registers $0-$31. Mnemonic names like c0_cause can
444 also be used in some contexts. */
447 /* Hardware registers $0-$31. Mnemonic names like hwr_cpunum can
448 also be used in some contexts. */
451 /* Floating-point registers $vf0-$vf31. */
454 /* Integer registers $vi0-$vi31. */
457 /* R5900 VU0 registers $I, $Q, $R and $ACC. */
463 /* MSA registers $w0-$w31. */
466 /* MSA control registers $0-$31. */
470 /* Base class for all operands. */
473 /* The type of the operand. */
474 enum mips_operand_type type;
476 /* The operand occupies SIZE bits of the instruction, starting at LSB. */
481 /* Describes an integer operand with a regular encoding pattern. */
482 struct mips_int_operand
484 struct mips_operand root;
486 /* The low ROOT.SIZE bits of MAX_VAL encodes (MAX_VAL + BIAS) << SHIFT.
487 The cyclically previous field value encodes 1 << SHIFT less than that,
490 - for { { T, 4, L }, 14, 0, 0 }, field values 0...14 encode themselves,
493 - { { T, 8, L }, 127, 0, 2 } is a normal signed 8-bit operand that is
494 shifted left two places.
496 - { { T, 3, L }, 8, 0, 0 } is a normal unsigned 3-bit operand except
499 - { { ... }, 0, 1, 3 } means that N encodes (N + 1) << 3. */
500 unsigned int max_val;
504 /* True if the operand should be printed as hex rather than decimal. */
505 bfd_boolean print_hex;
508 /* Uses a lookup table to describe a small integer operand. */
509 struct mips_mapped_int_operand
511 struct mips_operand root;
513 /* Maps each encoding value to the integer that it represents. */
516 /* True if the operand should be printed as hex rather than decimal. */
517 bfd_boolean print_hex;
520 /* An operand that encodes the most significant bit position of a bitfield.
521 Given a bitfield that spans bits [MSB, LSB], some operands of this type
522 encode MSB directly while others encode MSB - LSB. Each operand of this
523 type is preceded by an integer operand that specifies LSB.
525 The assembly form varies between instructions. For some instructions,
526 such as EXT, the operand is written as the bitfield size. For others,
527 such as EXTS, it is written in raw MSB - LSB form. */
528 struct mips_msb_operand
530 struct mips_operand root;
532 /* The assembly-level operand encoded by a field value of 0. */
535 /* True if the operand encodes MSB directly, false if it encodes
539 /* The maximum value of MSB + 1. */
543 /* Describes a single register operand. */
544 struct mips_reg_operand
546 struct mips_operand root;
548 /* The type of register. */
549 enum mips_reg_operand_type reg_type;
551 /* If nonnull, REG_MAP[N] gives the register associated with encoding N,
552 otherwise the encoding is the same as the register number. */
553 const unsigned char *reg_map;
556 /* Describes an operand that encodes a pair of registers. */
557 struct mips_reg_pair_operand
559 struct mips_operand root;
561 /* The type of register. */
562 enum mips_reg_operand_type reg_type;
564 /* Encoding N represents REG1_MAP[N], REG2_MAP[N]. */
565 unsigned char *reg1_map;
566 unsigned char *reg2_map;
569 /* Describes an operand that is calculated relative to a base PC.
570 The base PC is usually the address of the following instruction,
571 but the rules for MIPS16 instructions like ADDIUPC are more complicated. */
572 struct mips_pcrel_operand
574 /* Encodes the offset. */
575 struct mips_int_operand root;
577 /* The low ALIGN_LOG2 bits of the base PC are cleared to give PC',
578 which is then added to the offset encoded by ROOT. */
579 unsigned int align_log2 : 8;
581 /* If INCLUDE_ISA_BIT, the ISA bit of the original base PC is then
582 reinstated. This is true for jumps and branches and false for
583 PC-relative data instructions. */
584 unsigned int include_isa_bit : 1;
586 /* If FLIP_ISA_BIT, the ISA bit of the result is inverted.
587 This is true for JALX and false otherwise. */
588 unsigned int flip_isa_bit : 1;
591 /* Return true if the assembly syntax allows OPERAND to be omitted. */
593 static inline bfd_boolean
594 mips_optional_operand_p (const struct mips_operand *operand)
596 return (operand->type == OP_OPTIONAL_REG
597 || operand->type == OP_REPEAT_PREV_REG);
600 /* Return a version of INSN in which the field specified by OPERAND
603 static inline unsigned int
604 mips_insert_operand (const struct mips_operand *operand, unsigned int insn,
609 mask = (1 << operand->size) - 1;
610 insn &= ~(mask << operand->lsb);
611 insn |= (uval & mask) << operand->lsb;
615 /* Extract OPERAND from instruction INSN. */
617 static inline unsigned int
618 mips_extract_operand (const struct mips_operand *operand, unsigned int insn)
620 return (insn >> operand->lsb) & ((1 << operand->size) - 1);
623 /* UVAL is the value encoded by OPERAND. Return it in signed form. */
626 mips_signed_operand (const struct mips_operand *operand, unsigned int uval)
628 unsigned int sign_bit, mask;
630 mask = (1 << operand->size) - 1;
631 sign_bit = 1 << (operand->size - 1);
632 return ((uval + sign_bit) & mask) - sign_bit;
635 /* Return the integer that OPERAND encodes as UVAL. */
638 mips_decode_int_operand (const struct mips_int_operand *operand,
641 uval |= (operand->max_val - uval) & -(1 << operand->root.size);
642 uval += operand->bias;
643 uval <<= operand->shift;
647 /* Return the maximum value that can be encoded by OPERAND. */
650 mips_int_operand_max (const struct mips_int_operand *operand)
652 return (operand->max_val + operand->bias) << operand->shift;
655 /* Return the minimum value that can be encoded by OPERAND. */
658 mips_int_operand_min (const struct mips_int_operand *operand)
662 mask = (1 << operand->root.size) - 1;
663 return mips_int_operand_max (operand) - (mask << operand->shift);
666 /* Return the register that OPERAND encodes as UVAL. */
669 mips_decode_reg_operand (const struct mips_reg_operand *operand,
672 if (operand->reg_map)
673 uval = operand->reg_map[uval];
677 /* PC-relative operand OPERAND has value UVAL and is relative to BASE_PC.
678 Return the address that it encodes. */
680 static inline bfd_vma
681 mips_decode_pcrel_operand (const struct mips_pcrel_operand *operand,
682 bfd_vma base_pc, unsigned int uval)
686 addr = base_pc & -(1 << operand->align_log2);
687 addr += mips_decode_int_operand (&operand->root, uval);
688 if (operand->include_isa_bit)
690 if (operand->flip_isa_bit)
695 /* This structure holds information for a particular instruction. */
699 /* The name of the instruction. */
701 /* A string describing the arguments for this instruction. */
703 /* The basic opcode for the instruction. When assembling, this
704 opcode is modified by the arguments to produce the actual opcode
705 that is used. If pinfo is INSN_MACRO, then this is 0. */
707 /* If pinfo is not INSN_MACRO, then this is a bit mask for the
708 relevant portions of the opcode when disassembling. If the
709 actual opcode anded with the match field equals the opcode field,
710 then we have found the correct instruction. If pinfo is
711 INSN_MACRO, then this field is the macro identifier. */
713 /* For a macro, this is INSN_MACRO. Otherwise, it is a collection
714 of bits describing the instruction, notably any relevant hazard
717 /* A collection of additional bits describing the instruction. */
718 unsigned long pinfo2;
719 /* A collection of bits describing the instruction sets of which this
720 instruction or macro is a member. */
721 unsigned long membership;
722 /* A collection of bits describing the ASE of which this instruction
723 or macro is a member. */
725 /* A collection of bits describing the instruction sets of which this
726 instruction or macro is not a member. */
727 unsigned long exclusions;
730 /* These are the characters which may appear in the args field of an
731 instruction. They appear in the order in which the fields appear
732 when the instruction is used. Commas and parentheses in the args
733 string are ignored when assembling, and written into the output
736 Each of these characters corresponds to a mask field defined above.
738 "1" 5 bit sync type (OP_*_STYPE)
739 "<" 5 bit shift amount (OP_*_SHAMT)
740 ">" shift amount between 32 and 63, stored after subtracting 32 (OP_*_SHAMT)
741 "a" 26 bit target address (OP_*_TARGET)
742 "+i" likewise, but flips bit 0
743 "b" 5 bit base register (OP_*_RS)
744 "c" 10 bit breakpoint code (OP_*_CODE)
745 "d" 5 bit destination register specifier (OP_*_RD)
746 "h" 5 bit prefx hint (OP_*_PREFX)
747 "i" 16 bit unsigned immediate (OP_*_IMMEDIATE)
748 "j" 16 bit signed immediate (OP_*_DELTA)
749 "k" 5 bit cache opcode in target register position (OP_*_CACHE)
750 "o" 16 bit signed offset (OP_*_DELTA)
751 "p" 16 bit PC relative branch target address (OP_*_DELTA)
752 "q" 10 bit extra breakpoint code (OP_*_CODE2)
753 "r" 5 bit same register used as both source and target (OP_*_RS)
754 "s" 5 bit source register specifier (OP_*_RS)
755 "t" 5 bit target register (OP_*_RT)
756 "u" 16 bit upper 16 bits of address (OP_*_IMMEDIATE)
757 "v" 5 bit same register used as both source and destination (OP_*_RS)
758 "w" 5 bit same register used as both target and destination (OP_*_RT)
759 "U" 5 bit same destination register in both OP_*_RD and OP_*_RT
760 (used by clo and clz)
761 "C" 25 bit coprocessor function code (OP_*_COPZ)
762 "B" 20 bit syscall/breakpoint function code (OP_*_CODE20)
763 "J" 19 bit wait function code (OP_*_CODE19)
764 "x" accept and ignore register name
765 "z" must be zero register
766 "K" 5 bit Hardware Register (rdhwr instruction) (OP_*_RD)
767 "+A" 5 bit ins/ext/dins/dext/dinsm/dextm position, which becomes
768 LSB (OP_*_SHAMT; OP_*_EXTLSB or OP_*_STYPE may be used for
769 microMIPS compatibility).
770 Enforces: 0 <= pos < 32.
771 "+B" 5 bit ins/dins size, which becomes MSB (OP_*_INSMSB).
772 Requires that "+A" or "+E" occur first to set position.
773 Enforces: 0 < (pos+size) <= 32.
774 "+C" 5 bit ext/dext size, which becomes MSBD (OP_*_EXTMSBD).
775 Requires that "+A" or "+E" occur first to set position.
776 Enforces: 0 < (pos+size) <= 32.
777 (Also used by "dext" w/ different limits, but limits for
778 that are checked by the M_DEXT macro.)
779 "+E" 5 bit dinsu/dextu position, which becomes LSB-32 (OP_*_SHAMT).
780 Enforces: 32 <= pos < 64.
781 "+F" 5 bit "dinsm/dinsu" size, which becomes MSB-32 (OP_*_INSMSB).
782 Requires that "+A" or "+E" occur first to set position.
783 Enforces: 32 < (pos+size) <= 64.
784 "+G" 5 bit "dextm" size, which becomes MSBD-32 (OP_*_EXTMSBD).
785 Requires that "+A" or "+E" occur first to set position.
786 Enforces: 32 < (pos+size) <= 64.
787 "+H" 5 bit "dextu" size, which becomes MSBD (OP_*_EXTMSBD).
788 Requires that "+A" or "+E" occur first to set position.
789 Enforces: 32 < (pos+size) <= 64.
791 Floating point instructions:
792 "D" 5 bit destination register (OP_*_FD)
793 "M" 3 bit compare condition code (OP_*_CCC) (only used for mips4 and up)
794 "N" 3 bit branch condition code (OP_*_BCC) (only used for mips4 and up)
795 "S" 5 bit fs source 1 register (OP_*_FS)
796 "T" 5 bit ft source 2 register (OP_*_FT)
797 "R" 5 bit fr source 3 register (OP_*_FR)
798 "V" 5 bit same register used as floating source and destination (OP_*_FS)
799 "W" 5 bit same register used as floating target and destination (OP_*_FT)
801 Coprocessor instructions:
802 "E" 5 bit target register (OP_*_RT)
803 "G" 5 bit destination register (OP_*_RD)
804 "H" 3 bit sel field for (d)mtc* and (d)mfc* (OP_*_SEL)
805 "P" 5 bit performance-monitor register (OP_*_PERFREG)
806 "e" 5 bit vector register byte specifier (OP_*_VECBYTE)
807 "%" 3 bit immediate vr5400 vector alignment operand (OP_*_VECALIGN)
810 "A" General 32 bit expression
811 "I" 32 bit immediate (value placed in imm_expr).
812 "F" 64 bit floating point constant in .rdata
813 "L" 64 bit floating point constant in .lit8
814 "f" 32 bit floating point constant
815 "l" 32 bit floating point constant in .lit4
817 MDMX and VR5400 instruction operands (note that while these use the
818 FP register fields, the MDMX instructions accept both $fN and $vN names
820 "O" alignment offset (OP_*_ALN)
821 "Q" vector/scalar/immediate source (OP_*_VSEL and OP_*_FT)
822 "X" destination register (OP_*_FD)
823 "Y" source register (OP_*_FS)
824 "Z" source register (OP_*_FT)
826 R5900 VU0 Macromode instructions:
827 "+5" 5 bit floating point register (FD)
828 "+6" 5 bit floating point register (FS)
829 "+7" 5 bit floating point register (FT)
830 "+8" 5 bit integer register (FD)
831 "+9" 5 bit integer register (FS)
832 "+0" 5 bit integer register (FT)
833 "+K" match an existing 4-bit channel mask starting at bit 21
834 "+L" 2-bit channel index starting at bit 21
835 "+M" 2-bit channel index starting at bit 23
836 "+N" match an existing 2-bit channel index starting at bit 0
837 "+f" 15 bit immediate for VCALLMS
838 "+g" 5 bit signed immediate for VIADDI
839 "+m" $ACC register (syntax only)
840 "+q" $Q register (syntax only)
841 "+r" $R register (syntax only)
842 "+y" $I register (syntax only)
843 "#+" "++" decorator in ($reg++) sequence
844 "#-" "--" decorator in (--$reg) sequence
847 "2" 2 bit unsigned immediate for byte align (OP_*_BP)
848 "3" 3 bit unsigned immediate (OP_*_SA3)
849 "4" 4 bit unsigned immediate (OP_*_SA4)
850 "5" 8 bit unsigned immediate (OP_*_IMM8)
851 "6" 5 bit unsigned immediate (OP_*_RS)
852 "7" 2 bit dsp accumulator register (OP_*_DSPACC)
853 "8" 6 bit unsigned immediate (OP_*_WRDSP)
854 "9" 2 bit dsp accumulator register (OP_*_DSPACC_S)
855 "0" 6 bit signed immediate (OP_*_DSPSFT)
856 ":" 7 bit signed immediate (OP_*_DSPSFT_7)
857 "'" 6 bit unsigned immediate (OP_*_RDDSP)
858 "@" 10 bit signed immediate (OP_*_IMM10)
861 "!" 1 bit usermode flag (OP_*_MT_U)
862 "$" 1 bit load high flag (OP_*_MT_H)
863 "*" 2 bit dsp/smartmips accumulator register (OP_*_MTACC_T)
864 "&" 2 bit dsp/smartmips accumulator register (OP_*_MTACC_D)
865 "g" 5 bit coprocessor 1 and 2 destination register (OP_*_RD)
866 "+t" 5 bit coprocessor 0 destination register (OP_*_RT)
869 "~" 12 bit offset (OP_*_OFFSET12)
870 "\" 3 bit position for aset and aclr (OP_*_3BITPOS)
873 "+J" 10-bit hypcall code (OP_*CODE10)
876 "+1" UDI immediate bits 6-10
877 "+2" UDI immediate bits 6-15
878 "+3" UDI immediate bits 6-20
879 "+4" UDI immediate bits 6-25
882 "+x" Bit index field of bbit. Enforces: 0 <= index < 32.
883 "+X" Bit index field of bbit aliasing bbit32. Matches if 32 <= index < 64,
884 otherwise skips to next candidate.
885 "+p" Position field of cins/cins32/exts/exts32. Enforces 0 <= pos < 32.
886 "+P" Position field of cins/exts aliasing cins32/exts32. Matches if
887 32 <= pos < 64, otherwise skips to next candidate.
888 "+Q" Immediate field of seqi/snei. Enforces -512 <= imm < 512.
889 "+s" Length-minus-one field of cins32/exts32. Requires msb position
890 of the field to be <= 31.
891 "+S" Length-minus-one field of cins/exts. Requires msb position
892 of the field to be <= 63.
895 "+a" 8-bit signed offset in bit 6 (OP_*_OFFSET_A)
896 "+b" 8-bit signed offset in bit 3 (OP_*_OFFSET_B)
897 "+c" 9-bit signed offset in bit 6 (OP_*_OFFSET_C)
898 "+z" 5-bit rz register (OP_*_RZ)
899 "+Z" 5-bit fz register (OP_*_FZ)
902 "+j" 9-bit signed offset in bit 7 (OP_*_EVAOFFSET)
905 "+d" 5-bit MSA register (FD)
906 "+e" 5-bit MSA register (FS)
907 "+h" 5-bit MSA register (FT)
908 "+k" 5-bit GPR at bit 6
909 "+l" 5-bit MSA control register at bit 6
910 "+n" 5-bit MSA control register at bit 11
911 "+o" 4-bit vector element index at bit 16
912 "+u" 3-bit vector element index at bit 16
913 "+v" 2-bit vector element index at bit 16
914 "+w" 1-bit vector element index at bit 16
915 "+T" (-512 .. 511) << 0 at bit 16
916 "+U" (-512 .. 511) << 1 at bit 16
917 "+V" (-512 .. 511) << 2 at bit 16
918 "+W" (-512 .. 511) << 3 at bit 16
919 "+~" 2 bit LSA/DLSA shift amount from 1 to 4 at bit 6
920 "+!" 3 bit unsigned bit position at bit 16
921 "+@" 4 bit unsigned bit position at bit 16
922 "+#" 6 bit unsigned bit position at bit 16
923 "+$" 5 bit unsigned immediate at bit 16
924 "+%" 5 bit signed immediate at bit 16
925 "+^" 10 bit signed immediate at bit 11
926 "+&" 0 vector element index
927 "+*" 5-bit register vector element index at bit 16
928 "+|" 8-bit mask at bit 16
931 "()" parens surrounding optional value
932 "," separates operands
933 "+" Start of extension sequence.
935 Characters used so far, for quick reference when adding more:
937 "%[]<>(),+:'@!#$*&\~"
938 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
939 "abcdefghijklopqrstuvwxz"
941 Extension character sequences used so far ("+" followed by the
942 following), for quick reference when adding more:
945 "ABCEFGHJKLMNPQSTUVWXZ"
946 "abcdefghijklmnopqrstuvwxyz"
949 /* These are the bits which may be set in the pinfo field of an
950 instructions, if it is not equal to INSN_MACRO. */
952 /* Writes to operand number N. */
953 #define INSN_WRITE_SHIFT 0
954 #define INSN_WRITE_1 0x00000001
955 #define INSN_WRITE_2 0x00000002
956 #define INSN_WRITE_ALL 0x00000003
957 /* Reads from operand number N. */
958 #define INSN_READ_SHIFT 2
959 #define INSN_READ_1 0x00000004
960 #define INSN_READ_2 0x00000008
961 #define INSN_READ_3 0x00000010
962 #define INSN_READ_4 0x00000020
963 #define INSN_READ_ALL 0x0000003c
964 /* Modifies general purpose register 31. */
965 #define INSN_WRITE_GPR_31 0x00000040
966 /* Modifies coprocessor condition code. */
967 #define INSN_WRITE_COND_CODE 0x00000080
968 /* Reads coprocessor condition code. */
969 #define INSN_READ_COND_CODE 0x00000100
971 #define INSN_TLB 0x00000200
972 /* Reads coprocessor register other than floating point register. */
973 #define INSN_COP 0x00000400
974 /* Instruction loads value from memory. */
975 #define INSN_LOAD_MEMORY 0x00000800
976 /* Instruction loads value from coprocessor, requiring delay. */
977 #define INSN_LOAD_COPROC_DELAY 0x00001000
978 /* Instruction has unconditional branch delay slot. */
979 #define INSN_UNCOND_BRANCH_DELAY 0x00002000
980 /* Instruction has conditional branch delay slot. */
981 #define INSN_COND_BRANCH_DELAY 0x00004000
982 /* Conditional branch likely: if branch not taken, insn nullified. */
983 #define INSN_COND_BRANCH_LIKELY 0x00008000
984 /* Moves to coprocessor register, requiring delay. */
985 #define INSN_COPROC_MOVE_DELAY 0x00010000
986 /* Loads coprocessor register from memory, requiring delay. */
987 #define INSN_COPROC_MEMORY_DELAY 0x00020000
988 /* Reads the HI register. */
989 #define INSN_READ_HI 0x00040000
990 /* Reads the LO register. */
991 #define INSN_READ_LO 0x00080000
992 /* Modifies the HI register. */
993 #define INSN_WRITE_HI 0x00100000
994 /* Modifies the LO register. */
995 #define INSN_WRITE_LO 0x00200000
996 /* Not to be placed in a branch delay slot, either architecturally
997 or for ease of handling (such as with instructions that take a trap). */
998 #define INSN_NO_DELAY_SLOT 0x00400000
999 /* Instruction stores value into memory. */
1000 #define INSN_STORE_MEMORY 0x00800000
1001 /* Instruction uses single precision floating point. */
1002 #define FP_S 0x01000000
1003 /* Instruction uses double precision floating point. */
1004 #define FP_D 0x02000000
1005 /* Instruction is part of the tx39's integer multiply family. */
1006 #define INSN_MULT 0x04000000
1007 /* Reads general purpose register 24. */
1008 #define INSN_READ_GPR_24 0x08000000
1009 /* Writes to general purpose register 24. */
1010 #define INSN_WRITE_GPR_24 0x10000000
1011 /* A user-defined instruction. */
1012 #define INSN_UDI 0x20000000
1013 /* Instruction is actually a macro. It should be ignored by the
1014 disassembler, and requires special treatment by the assembler. */
1015 #define INSN_MACRO 0xffffffff
1017 /* These are the bits which may be set in the pinfo2 field of an
1020 /* Instruction is a simple alias (I.E. "move" for daddu/addu/or) */
1021 #define INSN2_ALIAS 0x00000001
1022 /* Instruction reads MDMX accumulator. */
1023 #define INSN2_READ_MDMX_ACC 0x00000002
1024 /* Instruction writes MDMX accumulator. */
1025 #define INSN2_WRITE_MDMX_ACC 0x00000004
1026 /* Macro uses single-precision floating-point instructions. This should
1027 only be set for macros. For instructions, FP_S in pinfo carries the
1028 same information. */
1029 #define INSN2_M_FP_S 0x00000008
1030 /* Macro uses double-precision floating-point instructions. This should
1031 only be set for macros. For instructions, FP_D in pinfo carries the
1032 same information. */
1033 #define INSN2_M_FP_D 0x00000010
1034 /* Instruction has a branch delay slot that requires a 16-bit instruction. */
1035 #define INSN2_BRANCH_DELAY_16BIT 0x00000020
1036 /* Instruction has a branch delay slot that requires a 32-bit instruction. */
1037 #define INSN2_BRANCH_DELAY_32BIT 0x00000040
1038 /* Writes to the stack pointer ($29). */
1039 #define INSN2_WRITE_SP 0x00000080
1040 /* Reads from the stack pointer ($29). */
1041 #define INSN2_READ_SP 0x00000100
1042 /* Reads the RA ($31) register. */
1043 #define INSN2_READ_GPR_31 0x00000200
1044 /* Reads the program counter ($pc). */
1045 #define INSN2_READ_PC 0x00000400
1046 /* Is an unconditional branch insn. */
1047 #define INSN2_UNCOND_BRANCH 0x00000800
1048 /* Is a conditional branch insn. */
1049 #define INSN2_COND_BRANCH 0x00001000
1050 /* Reads from $16. This is true of the MIPS16 0x6500 nop. */
1051 #define INSN2_READ_GPR_16 0x00002000
1052 /* Has an "\.x?y?z?w?" suffix based on mips_vu0_channel_mask. */
1053 #define INSN2_VU0_CHANNEL_SUFFIX 0x00004000
1055 /* Masks used to mark instructions to indicate which MIPS ISA level
1056 they were introduced in. INSN_ISA_MASK masks an enumeration that
1057 specifies the base ISA level(s). The remainder of a 32-bit
1058 word constructed using these macros is a bitmask of the remaining
1059 INSN_* values below. */
1061 #define INSN_ISA_MASK 0x0000000ful
1063 /* We cannot start at zero due to ISA_UNKNOWN below. */
1069 #define INSN_ISA32 6
1070 #define INSN_ISA32R2 7
1071 #define INSN_ISA64 8
1072 #define INSN_ISA64R2 9
1073 /* Below this point the INSN_* values correspond to combinations of ISAs.
1074 They are only for use in the opcodes table to indicate membership of
1075 a combination of ISAs that cannot be expressed using the usual inclusion
1076 ordering on the above INSN_* values. */
1077 #define INSN_ISA3_32 10
1078 #define INSN_ISA3_32R2 11
1079 #define INSN_ISA4_32 12
1080 #define INSN_ISA4_32R2 13
1081 #define INSN_ISA5_32R2 14
1083 /* Given INSN_ISA* values X and Y, where X ranges over INSN_ISA1 through
1084 INSN_ISA5_32R2 and Y ranges over INSN_ISA1 through INSN_ISA64R2,
1085 this table describes whether at least one of the ISAs described by X
1086 is/are implemented by ISA Y. (Think of Y as the ISA level supported by
1087 a particular core and X as the ISA level(s) at which a certain instruction
1088 is defined.) The ISA(s) described by X is/are implemented by Y iff
1089 (mips_isa_table[(Y & INSN_ISA_MASK) - 1] >> ((X & INSN_ISA_MASK) - 1)) & 1
1091 static const unsigned int mips_isa_table[] =
1092 { 0x0001, 0x0003, 0x0607, 0x1e0f, 0x3e1f, 0x0a23, 0x3e63, 0x3ebf, 0x3fff };
1094 /* Masks used for Chip specific instructions. */
1095 #define INSN_CHIP_MASK 0xc3ff0f20
1097 /* Cavium Networks Octeon instructions. */
1098 #define INSN_OCTEON 0x00000800
1099 #define INSN_OCTEONP 0x00000200
1100 #define INSN_OCTEON2 0x00000100
1102 /* MIPS R5900 instruction */
1103 #define INSN_5900 0x00004000
1105 /* MIPS R4650 instruction. */
1106 #define INSN_4650 0x00010000
1107 /* LSI R4010 instruction. */
1108 #define INSN_4010 0x00020000
1109 /* NEC VR4100 instruction. */
1110 #define INSN_4100 0x00040000
1111 /* Toshiba R3900 instruction. */
1112 #define INSN_3900 0x00080000
1113 /* MIPS R10000 instruction. */
1114 #define INSN_10000 0x00100000
1115 /* Broadcom SB-1 instruction. */
1116 #define INSN_SB1 0x00200000
1117 /* NEC VR4111/VR4181 instruction. */
1118 #define INSN_4111 0x00400000
1119 /* NEC VR4120 instruction. */
1120 #define INSN_4120 0x00800000
1121 /* NEC VR5400 instruction. */
1122 #define INSN_5400 0x01000000
1123 /* NEC VR5500 instruction. */
1124 #define INSN_5500 0x02000000
1126 /* ST Microelectronics Loongson 2E. */
1127 #define INSN_LOONGSON_2E 0x40000000
1128 /* ST Microelectronics Loongson 2F. */
1129 #define INSN_LOONGSON_2F 0x80000000
1131 #define INSN_LOONGSON_3A 0x00000400
1132 /* RMI Xlr instruction */
1133 #define INSN_XLR 0x00000020
1136 #define ASE_DSP 0x00000001
1137 #define ASE_DSP64 0x00000002
1139 #define ASE_DSPR2 0x00000004
1140 /* Enhanced VA Scheme */
1141 #define ASE_EVA 0x00000008
1142 /* MCU (MicroController) ASE */
1143 #define ASE_MCU 0x00000010
1145 #define ASE_MDMX 0x00000020
1147 #define ASE_MIPS3D 0x00000040
1149 #define ASE_MT 0x00000080
1151 #define ASE_SMARTMIPS 0x00000100
1152 /* Virtualization ASE */
1153 #define ASE_VIRT 0x00000200
1154 #define ASE_VIRT64 0x00000400
1156 #define ASE_MSA 0x00000800
1157 #define ASE_MSA64 0x00001000
1158 /* eXtended Physical Address (XPA) Extension. */
1159 #define ASE_XPA 0x00002000
1161 /* MIPS ISA defines, use instead of hardcoding ISA level. */
1163 #define ISA_UNKNOWN 0 /* Gas internal use. */
1164 #define ISA_MIPS1 INSN_ISA1
1165 #define ISA_MIPS2 INSN_ISA2
1166 #define ISA_MIPS3 INSN_ISA3
1167 #define ISA_MIPS4 INSN_ISA4
1168 #define ISA_MIPS5 INSN_ISA5
1170 #define ISA_MIPS32 INSN_ISA32
1171 #define ISA_MIPS64 INSN_ISA64
1173 #define ISA_MIPS32R2 INSN_ISA32R2
1174 #define ISA_MIPS64R2 INSN_ISA64R2
1177 /* CPU defines, use instead of hardcoding processor number. Keep this
1178 in sync with bfd/archures.c in order for machine selection to work. */
1179 #define CPU_UNKNOWN 0 /* Gas internal use. */
1180 #define CPU_R3000 3000
1181 #define CPU_R3900 3900
1182 #define CPU_R4000 4000
1183 #define CPU_R4010 4010
1184 #define CPU_VR4100 4100
1185 #define CPU_R4111 4111
1186 #define CPU_VR4120 4120
1187 #define CPU_R4300 4300
1188 #define CPU_R4400 4400
1189 #define CPU_R4600 4600
1190 #define CPU_R4650 4650
1191 #define CPU_R5000 5000
1192 #define CPU_VR5400 5400
1193 #define CPU_VR5500 5500
1194 #define CPU_R5900 5900
1195 #define CPU_R6000 6000
1196 #define CPU_RM7000 7000
1197 #define CPU_R8000 8000
1198 #define CPU_RM9000 9000
1199 #define CPU_R10000 10000
1200 #define CPU_R12000 12000
1201 #define CPU_R14000 14000
1202 #define CPU_R16000 16000
1203 #define CPU_MIPS16 16
1204 #define CPU_MIPS32 32
1205 #define CPU_MIPS32R2 33
1207 #define CPU_MIPS64 64
1208 #define CPU_MIPS64R2 65
1209 #define CPU_SB1 12310201 /* octal 'SB', 01. */
1210 #define CPU_LOONGSON_2E 3001
1211 #define CPU_LOONGSON_2F 3002
1212 #define CPU_LOONGSON_3A 3003
1213 #define CPU_OCTEON 6501
1214 #define CPU_OCTEONP 6601
1215 #define CPU_OCTEON2 6502
1216 #define CPU_XLR 887682 /* decimal 'XLR' */
1218 /* Return true if the given CPU is included in INSN_* mask MASK. */
1220 static inline bfd_boolean
1221 cpu_is_member (int cpu, unsigned int mask)
1228 return (mask & INSN_4650) != 0;
1231 return (mask & INSN_4010) != 0;
1234 return (mask & INSN_4100) != 0;
1237 return (mask & INSN_3900) != 0;
1243 return (mask & INSN_10000) != 0;
1246 return (mask & INSN_SB1) != 0;
1249 return (mask & INSN_4111) != 0;
1252 return (mask & INSN_4120) != 0;
1255 return (mask & INSN_5400) != 0;
1258 return (mask & INSN_5500) != 0;
1261 return (mask & INSN_5900) != 0;
1263 case CPU_LOONGSON_2E:
1264 return (mask & INSN_LOONGSON_2E) != 0;
1266 case CPU_LOONGSON_2F:
1267 return (mask & INSN_LOONGSON_2F) != 0;
1269 case CPU_LOONGSON_3A:
1270 return (mask & INSN_LOONGSON_3A) != 0;
1273 return (mask & INSN_OCTEON) != 0;
1276 return (mask & INSN_OCTEONP) != 0;
1279 return (mask & INSN_OCTEON2) != 0;
1282 return (mask & INSN_XLR) != 0;
1289 /* Test for membership in an ISA including chip specific ISAs. INSN
1290 is pointer to an element of the opcode table; ISA is the specified
1291 ISA/ASE bitmask to test against; and CPU is the CPU specific ISA to
1292 test, or zero if no CPU specific ISA test is desired. Return true
1293 if instruction INSN is available to the given ISA and CPU. */
1295 static inline bfd_boolean
1296 opcode_is_member (const struct mips_opcode *insn, int isa, int ase, int cpu)
1298 if (!cpu_is_member (cpu, insn->exclusions))
1300 /* Test for ISA level compatibility. */
1301 if ((isa & INSN_ISA_MASK) != 0
1302 && (insn->membership & INSN_ISA_MASK) != 0
1303 && ((mips_isa_table[(isa & INSN_ISA_MASK) - 1]
1304 >> ((insn->membership & INSN_ISA_MASK) - 1)) & 1) != 0)
1307 /* Test for ASE compatibility. */
1308 if ((ase & insn->ase) != 0)
1311 /* Test for processor-specific extensions. */
1312 if (cpu_is_member (cpu, insn->membership))
1318 /* This is a list of macro expanded instructions.
1320 _I appended means immediate
1321 _A appended means target address of a jump
1322 _AB appended means address with (possibly zero) base register
1323 _D appended means 64 bit floating point constant
1324 _S appended means 32 bit floating point constant. */
1577 /* The order of overloaded instructions matters. Label arguments and
1578 register arguments look the same. Instructions that can have either
1579 for arguments must apear in the correct order in this table for the
1580 assembler to pick the right one. In other words, entries with
1581 immediate operands must apear after the same instruction with
1584 Many instructions are short hand for other instructions (i.e., The
1585 jal <register> instruction is short for jalr <register>). */
1587 extern const struct mips_operand mips_vu0_channel_mask;
1588 extern const struct mips_operand *decode_mips_operand (const char *);
1589 extern const struct mips_opcode mips_builtin_opcodes[];
1590 extern const int bfd_mips_num_builtin_opcodes;
1591 extern struct mips_opcode *mips_opcodes;
1592 extern int bfd_mips_num_opcodes;
1593 #define NUMOPCODES bfd_mips_num_opcodes
1596 /* The rest of this file adds definitions for the mips16 TinyRISC
1599 /* These are the bitmasks and shift counts used for the different
1600 fields in the instruction formats. Other than OP, no masks are
1601 provided for the fixed portions of an instruction, since they are
1604 The I format uses IMM11.
1606 The RI format uses RX and IMM8.
1608 The RR format uses RX, and RY.
1610 The RRI format uses RX, RY, and IMM5.
1612 The RRR format uses RX, RY, and RZ.
1614 The RRI_A format uses RX, RY, and IMM4.
1616 The SHIFT format uses RX, RY, and SHAMT.
1618 The I8 format uses IMM8.
1620 The I8_MOVR32 format uses RY and REGR32.
1622 The IR_MOV32R format uses REG32R and MOV32Z.
1624 The I64 format uses IMM8.
1626 The RI64 format uses RY and IMM5.
1629 #define MIPS16OP_MASK_OP 0x1f
1630 #define MIPS16OP_SH_OP 11
1631 #define MIPS16OP_MASK_IMM11 0x7ff
1632 #define MIPS16OP_SH_IMM11 0
1633 #define MIPS16OP_MASK_RX 0x7
1634 #define MIPS16OP_SH_RX 8
1635 #define MIPS16OP_MASK_IMM8 0xff
1636 #define MIPS16OP_SH_IMM8 0
1637 #define MIPS16OP_MASK_RY 0x7
1638 #define MIPS16OP_SH_RY 5
1639 #define MIPS16OP_MASK_IMM5 0x1f
1640 #define MIPS16OP_SH_IMM5 0
1641 #define MIPS16OP_MASK_RZ 0x7
1642 #define MIPS16OP_SH_RZ 2
1643 #define MIPS16OP_MASK_IMM4 0xf
1644 #define MIPS16OP_SH_IMM4 0
1645 #define MIPS16OP_MASK_REGR32 0x1f
1646 #define MIPS16OP_SH_REGR32 0
1647 #define MIPS16OP_MASK_REG32R 0x1f
1648 #define MIPS16OP_SH_REG32R 3
1649 #define MIPS16OP_EXTRACT_REG32R(i) ((((i) >> 5) & 7) | ((i) & 0x18))
1650 #define MIPS16OP_MASK_MOVE32Z 0x7
1651 #define MIPS16OP_SH_MOVE32Z 0
1652 #define MIPS16OP_MASK_IMM6 0x3f
1653 #define MIPS16OP_SH_IMM6 5
1655 /* These are the characters which may appears in the args field of a MIPS16
1656 instruction. They appear in the order in which the fields appear when the
1657 instruction is used. Commas and parentheses in the args string are ignored
1658 when assembling, and written into the output when disassembling.
1660 "y" 3 bit register (MIPS16OP_*_RY)
1661 "x" 3 bit register (MIPS16OP_*_RX)
1662 "z" 3 bit register (MIPS16OP_*_RZ)
1663 "Z" 3 bit register (MIPS16OP_*_MOVE32Z)
1664 "v" 3 bit same register as source and destination (MIPS16OP_*_RX)
1665 "w" 3 bit same register as source and destination (MIPS16OP_*_RY)
1666 "0" zero register ($0)
1667 "S" stack pointer ($sp or $29)
1669 "R" return address register ($ra or $31)
1670 "X" 5 bit MIPS register (MIPS16OP_*_REGR32)
1671 "Y" 5 bit MIPS register (MIPS16OP_*_REG32R)
1672 "6" 6 bit unsigned break code (MIPS16OP_*_IMM6)
1673 "a" 26 bit jump address
1674 "i" likewise, but flips bit 0
1675 "e" 11 bit extension value
1676 "l" register list for entry instruction
1677 "L" register list for exit instruction
1679 "I" an immediate value used for macros
1681 The remaining codes may be extended. Except as otherwise noted,
1682 the full extended operand is a 16 bit signed value.
1683 "<" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 5 bit unsigned)
1684 ">" 3 bit unsigned shift count * 0 (MIPS16OP_*_RX) (full 5 bit unsigned)
1685 "[" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 6 bit unsigned)
1686 "]" 3 bit unsigned shift count * 0 (MIPS16OP_*_RX) (full 6 bit unsigned)
1687 "4" 4 bit signed immediate * 0 (MIPS16OP_*_IMM4) (full 15 bit signed)
1688 "5" 5 bit unsigned immediate * 0 (MIPS16OP_*_IMM5)
1689 "H" 5 bit unsigned immediate * 2 (MIPS16OP_*_IMM5)
1690 "W" 5 bit unsigned immediate * 4 (MIPS16OP_*_IMM5)
1691 "D" 5 bit unsigned immediate * 8 (MIPS16OP_*_IMM5)
1692 "j" 5 bit signed immediate * 0 (MIPS16OP_*_IMM5)
1693 "8" 8 bit unsigned immediate * 0 (MIPS16OP_*_IMM8)
1694 "V" 8 bit unsigned immediate * 4 (MIPS16OP_*_IMM8)
1695 "C" 8 bit unsigned immediate * 8 (MIPS16OP_*_IMM8)
1696 "U" 8 bit unsigned immediate * 0 (MIPS16OP_*_IMM8) (full 16 bit unsigned)
1697 "k" 8 bit signed immediate * 0 (MIPS16OP_*_IMM8)
1698 "K" 8 bit signed immediate * 8 (MIPS16OP_*_IMM8)
1699 "p" 8 bit conditional branch address (MIPS16OP_*_IMM8)
1700 "q" 11 bit branch address (MIPS16OP_*_IMM11)
1701 "A" 8 bit PC relative address * 4 (MIPS16OP_*_IMM8)
1702 "B" 5 bit PC relative address * 8 (MIPS16OP_*_IMM5)
1703 "E" 5 bit PC relative address * 4 (MIPS16OP_*_IMM5)
1704 "m" 7 bit register list for save instruction (18 bit extended)
1705 "M" 7 bit register list for restore instruction (18 bit extended)
1708 /* Save/restore encoding for the args field when all 4 registers are
1709 either saved as arguments or saved/restored as statics. */
1710 #define MIPS16_ALL_ARGS 0xe
1711 #define MIPS16_ALL_STATICS 0xb
1713 /* The following flags have the same value for the mips16 opcode
1718 INSN_UNCOND_BRANCH_DELAY
1719 INSN_COND_BRANCH_DELAY
1720 INSN_COND_BRANCH_LIKELY (never used)
1729 extern const struct mips_operand *decode_mips16_operand (char, bfd_boolean);
1730 extern const struct mips_opcode mips16_opcodes[];
1731 extern const int bfd_mips16_num_opcodes;
1733 /* These are the bit masks and shift counts used for the different fields
1734 in the microMIPS instruction formats. No masks are provided for the
1735 fixed portions of an instruction, since they are not needed. */
1737 #define MICROMIPSOP_MASK_IMMEDIATE 0xffff
1738 #define MICROMIPSOP_SH_IMMEDIATE 0
1739 #define MICROMIPSOP_MASK_DELTA 0xffff
1740 #define MICROMIPSOP_SH_DELTA 0
1741 #define MICROMIPSOP_MASK_CODE10 0x3ff
1742 #define MICROMIPSOP_SH_CODE10 16 /* 10-bit wait code. */
1743 #define MICROMIPSOP_MASK_TRAP 0xf
1744 #define MICROMIPSOP_SH_TRAP 12 /* 4-bit trap code. */
1745 #define MICROMIPSOP_MASK_SHAMT 0x1f
1746 #define MICROMIPSOP_SH_SHAMT 11
1747 #define MICROMIPSOP_MASK_TARGET 0x3ffffff
1748 #define MICROMIPSOP_SH_TARGET 0
1749 #define MICROMIPSOP_MASK_EXTLSB 0x1f /* "ext" LSB. */
1750 #define MICROMIPSOP_SH_EXTLSB 6
1751 #define MICROMIPSOP_MASK_EXTMSBD 0x1f /* "ext" MSBD. */
1752 #define MICROMIPSOP_SH_EXTMSBD 11
1753 #define MICROMIPSOP_MASK_INSMSB 0x1f /* "ins" MSB. */
1754 #define MICROMIPSOP_SH_INSMSB 11
1755 #define MICROMIPSOP_MASK_CODE 0x3ff
1756 #define MICROMIPSOP_SH_CODE 16 /* 10-bit higher break code. */
1757 #define MICROMIPSOP_MASK_CODE2 0x3ff
1758 #define MICROMIPSOP_SH_CODE2 6 /* 10-bit lower break code. */
1759 #define MICROMIPSOP_MASK_CACHE 0x1f
1760 #define MICROMIPSOP_SH_CACHE 21 /* 5-bit cache op. */
1761 #define MICROMIPSOP_MASK_SEL 0x7
1762 #define MICROMIPSOP_SH_SEL 11
1763 #define MICROMIPSOP_MASK_OFFSET12 0xfff
1764 #define MICROMIPSOP_SH_OFFSET12 0
1765 #define MICROMIPSOP_MASK_3BITPOS 0x7
1766 #define MICROMIPSOP_SH_3BITPOS 21
1767 #define MICROMIPSOP_MASK_STYPE 0x1f
1768 #define MICROMIPSOP_SH_STYPE 16
1769 #define MICROMIPSOP_MASK_OFFSET10 0x3ff
1770 #define MICROMIPSOP_SH_OFFSET10 6
1771 #define MICROMIPSOP_MASK_RS 0x1f
1772 #define MICROMIPSOP_SH_RS 16
1773 #define MICROMIPSOP_MASK_RT 0x1f
1774 #define MICROMIPSOP_SH_RT 21
1775 #define MICROMIPSOP_MASK_RD 0x1f
1776 #define MICROMIPSOP_SH_RD 11
1777 #define MICROMIPSOP_MASK_FS 0x1f
1778 #define MICROMIPSOP_SH_FS 16
1779 #define MICROMIPSOP_MASK_FT 0x1f
1780 #define MICROMIPSOP_SH_FT 21
1781 #define MICROMIPSOP_MASK_FD 0x1f
1782 #define MICROMIPSOP_SH_FD 11
1783 #define MICROMIPSOP_MASK_FR 0x1f
1784 #define MICROMIPSOP_SH_FR 6
1785 #define MICROMIPSOP_MASK_RS3 0x1f
1786 #define MICROMIPSOP_SH_RS3 6
1787 #define MICROMIPSOP_MASK_PREFX 0x1f
1788 #define MICROMIPSOP_SH_PREFX 11
1789 #define MICROMIPSOP_MASK_BCC 0x7
1790 #define MICROMIPSOP_SH_BCC 18
1791 #define MICROMIPSOP_MASK_CCC 0x7
1792 #define MICROMIPSOP_SH_CCC 13
1793 #define MICROMIPSOP_MASK_COPZ 0x7fffff
1794 #define MICROMIPSOP_SH_COPZ 3
1796 #define MICROMIPSOP_MASK_MB 0x7
1797 #define MICROMIPSOP_SH_MB 23
1798 #define MICROMIPSOP_MASK_MC 0x7
1799 #define MICROMIPSOP_SH_MC 4
1800 #define MICROMIPSOP_MASK_MD 0x7
1801 #define MICROMIPSOP_SH_MD 7
1802 #define MICROMIPSOP_MASK_ME 0x7
1803 #define MICROMIPSOP_SH_ME 1
1804 #define MICROMIPSOP_MASK_MF 0x7
1805 #define MICROMIPSOP_SH_MF 3
1806 #define MICROMIPSOP_MASK_MG 0x7
1807 #define MICROMIPSOP_SH_MG 0
1808 #define MICROMIPSOP_MASK_MH 0x7
1809 #define MICROMIPSOP_SH_MH 7
1810 #define MICROMIPSOP_MASK_MJ 0x1f
1811 #define MICROMIPSOP_SH_MJ 0
1812 #define MICROMIPSOP_MASK_ML 0x7
1813 #define MICROMIPSOP_SH_ML 4
1814 #define MICROMIPSOP_MASK_MM 0x7
1815 #define MICROMIPSOP_SH_MM 1
1816 #define MICROMIPSOP_MASK_MN 0x7
1817 #define MICROMIPSOP_SH_MN 4
1818 #define MICROMIPSOP_MASK_MP 0x1f
1819 #define MICROMIPSOP_SH_MP 5
1820 #define MICROMIPSOP_MASK_MQ 0x7
1821 #define MICROMIPSOP_SH_MQ 7
1823 #define MICROMIPSOP_MASK_IMMA 0x7f
1824 #define MICROMIPSOP_SH_IMMA 0
1825 #define MICROMIPSOP_MASK_IMMB 0x7
1826 #define MICROMIPSOP_SH_IMMB 1
1827 #define MICROMIPSOP_MASK_IMMC 0xf
1828 #define MICROMIPSOP_SH_IMMC 0
1829 #define MICROMIPSOP_MASK_IMMD 0x3ff
1830 #define MICROMIPSOP_SH_IMMD 0
1831 #define MICROMIPSOP_MASK_IMME 0x7f
1832 #define MICROMIPSOP_SH_IMME 0
1833 #define MICROMIPSOP_MASK_IMMF 0xf
1834 #define MICROMIPSOP_SH_IMMF 0
1835 #define MICROMIPSOP_MASK_IMMG 0xf
1836 #define MICROMIPSOP_SH_IMMG 0
1837 #define MICROMIPSOP_MASK_IMMH 0xf
1838 #define MICROMIPSOP_SH_IMMH 0
1839 #define MICROMIPSOP_MASK_IMMI 0x7f
1840 #define MICROMIPSOP_SH_IMMI 0
1841 #define MICROMIPSOP_MASK_IMMJ 0xf
1842 #define MICROMIPSOP_SH_IMMJ 0
1843 #define MICROMIPSOP_MASK_IMML 0xf
1844 #define MICROMIPSOP_SH_IMML 0
1845 #define MICROMIPSOP_MASK_IMMM 0x7
1846 #define MICROMIPSOP_SH_IMMM 1
1847 #define MICROMIPSOP_MASK_IMMN 0x3
1848 #define MICROMIPSOP_SH_IMMN 4
1849 #define MICROMIPSOP_MASK_IMMO 0xf
1850 #define MICROMIPSOP_SH_IMMO 0
1851 #define MICROMIPSOP_MASK_IMMP 0x1f
1852 #define MICROMIPSOP_SH_IMMP 0
1853 #define MICROMIPSOP_MASK_IMMQ 0x7fffff
1854 #define MICROMIPSOP_SH_IMMQ 0
1855 #define MICROMIPSOP_MASK_IMMU 0x1f
1856 #define MICROMIPSOP_SH_IMMU 0
1857 #define MICROMIPSOP_MASK_IMMW 0x3f
1858 #define MICROMIPSOP_SH_IMMW 1
1859 #define MICROMIPSOP_MASK_IMMX 0xf
1860 #define MICROMIPSOP_SH_IMMX 1
1861 #define MICROMIPSOP_MASK_IMMY 0x1ff
1862 #define MICROMIPSOP_SH_IMMY 1
1865 #define MICROMIPSOP_MASK_DSPACC 0x3
1866 #define MICROMIPSOP_SH_DSPACC 14
1867 #define MICROMIPSOP_MASK_DSPSFT 0x3f
1868 #define MICROMIPSOP_SH_DSPSFT 16
1869 #define MICROMIPSOP_MASK_SA3 0x7
1870 #define MICROMIPSOP_SH_SA3 13
1871 #define MICROMIPSOP_MASK_SA4 0xf
1872 #define MICROMIPSOP_SH_SA4 12
1873 #define MICROMIPSOP_MASK_IMM8 0xff
1874 #define MICROMIPSOP_SH_IMM8 13
1875 #define MICROMIPSOP_MASK_IMM10 0x3ff
1876 #define MICROMIPSOP_SH_IMM10 16
1877 #define MICROMIPSOP_MASK_WRDSP 0x3f
1878 #define MICROMIPSOP_SH_WRDSP 14
1879 #define MICROMIPSOP_MASK_BP 0x3
1880 #define MICROMIPSOP_SH_BP 14
1882 /* Placeholders for fields that only exist in the traditional 32-bit
1883 instruction encoding; see the comment above for details. */
1884 #define MICROMIPSOP_MASK_CODE20 0
1885 #define MICROMIPSOP_SH_CODE20 0
1886 #define MICROMIPSOP_MASK_PERFREG 0
1887 #define MICROMIPSOP_SH_PERFREG 0
1888 #define MICROMIPSOP_MASK_CODE19 0
1889 #define MICROMIPSOP_SH_CODE19 0
1890 #define MICROMIPSOP_MASK_ALN 0
1891 #define MICROMIPSOP_SH_ALN 0
1892 #define MICROMIPSOP_MASK_VECBYTE 0
1893 #define MICROMIPSOP_SH_VECBYTE 0
1894 #define MICROMIPSOP_MASK_VECALIGN 0
1895 #define MICROMIPSOP_SH_VECALIGN 0
1896 #define MICROMIPSOP_MASK_DSPACC_S 0
1897 #define MICROMIPSOP_SH_DSPACC_S 0
1898 #define MICROMIPSOP_MASK_DSPSFT_7 0
1899 #define MICROMIPSOP_SH_DSPSFT_7 0
1900 #define MICROMIPSOP_MASK_RDDSP 0
1901 #define MICROMIPSOP_SH_RDDSP 0
1902 #define MICROMIPSOP_MASK_MT_U 0
1903 #define MICROMIPSOP_SH_MT_U 0
1904 #define MICROMIPSOP_MASK_MT_H 0
1905 #define MICROMIPSOP_SH_MT_H 0
1906 #define MICROMIPSOP_MASK_MTACC_T 0
1907 #define MICROMIPSOP_SH_MTACC_T 0
1908 #define MICROMIPSOP_MASK_MTACC_D 0
1909 #define MICROMIPSOP_SH_MTACC_D 0
1910 #define MICROMIPSOP_MASK_BBITIND 0
1911 #define MICROMIPSOP_SH_BBITIND 0
1912 #define MICROMIPSOP_MASK_CINSPOS 0
1913 #define MICROMIPSOP_SH_CINSPOS 0
1914 #define MICROMIPSOP_MASK_CINSLM1 0
1915 #define MICROMIPSOP_SH_CINSLM1 0
1916 #define MICROMIPSOP_MASK_SEQI 0
1917 #define MICROMIPSOP_SH_SEQI 0
1918 #define MICROMIPSOP_SH_OFFSET_A 0
1919 #define MICROMIPSOP_MASK_OFFSET_A 0
1920 #define MICROMIPSOP_SH_OFFSET_B 0
1921 #define MICROMIPSOP_MASK_OFFSET_B 0
1922 #define MICROMIPSOP_SH_OFFSET_C 0
1923 #define MICROMIPSOP_MASK_OFFSET_C 0
1924 #define MICROMIPSOP_SH_RZ 0
1925 #define MICROMIPSOP_MASK_RZ 0
1926 #define MICROMIPSOP_SH_FZ 0
1927 #define MICROMIPSOP_MASK_FZ 0
1929 /* microMIPS Enhanced VA Scheme */
1930 #define MICROMIPSOP_SH_EVAOFFSET 0
1931 #define MICROMIPSOP_MASK_EVAOFFSET 0x1ff
1933 /* These are the characters which may appears in the args field of a microMIPS
1934 instruction. They appear in the order in which the fields appear
1935 when the instruction is used. Commas and parentheses in the args
1936 string are ignored when assembling, and written into the output
1939 The followings are for 16-bit microMIPS instructions.
1942 "mc" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MC) at bit 4
1943 The same register used as both source and target.
1944 "md" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MD) at bit 7
1945 "me" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_ME) at bit 1
1946 The same register used as both source and target.
1947 "mf" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MF) at bit 3
1948 "mg" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MG) at bit 0
1949 "mh" 3-bit MIPS register pair (MICROMIPSOP_*_MH) at bit 7
1950 "mj" 5-bit MIPS registers (MICROMIPSOP_*_MJ) at bit 0
1951 "ml" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_ML) at bit 4
1952 "mm" 3-bit MIPS registers 0, 2, 3, 16-20 (MICROMIPSOP_*_MM) at bit 1
1953 "mn" 3-bit MIPS registers 0, 2, 3, 16-20 (MICROMIPSOP_*_MN) at bit 4
1954 "mp" 5-bit MIPS registers (MICROMIPSOP_*_MP) at bit 5
1955 "mq" 3-bit MIPS registers 0, 2-7, 17 (MICROMIPSOP_*_MQ) at bit 7
1956 "mr" must be program counter
1958 "mt" must be the same as the previous register
1959 "mx" must be the same as the destination register
1963 "mA" 7-bit immediate (-64 .. 63) << 2 (MICROMIPSOP_*_IMMA)
1964 "mB" 3-bit immediate (-1, 1, 4, 8, 12, 16, 20, 24) (MICROMIPSOP_*_IMMB)
1965 "mC" 4-bit immediate (1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 128, 255,
1966 32768, 65535) (MICROMIPSOP_*_IMMC)
1967 "mD" 10-bit branch address (-512 .. 511) << 1 (MICROMIPSOP_*_IMMD)
1968 "mE" 7-bit branch address (-64 .. 63) << 1 (MICROMIPSOP_*_IMME)
1969 "mF" 4-bit immediate (0 .. 15) (MICROMIPSOP_*_IMMF)
1970 "mG" 4-bit immediate (-1 .. 14) (MICROMIPSOP_*_IMMG)
1971 "mH" 4-bit immediate (0 .. 15) << 1 (MICROMIPSOP_*_IMMH)
1972 "mI" 7-bit immediate (-1 .. 126) (MICROMIPSOP_*_IMMI)
1973 "mJ" 4-bit immediate (0 .. 15) << 2 (MICROMIPSOP_*_IMMJ)
1974 "mL" 4-bit immediate (0 .. 15) (MICROMIPSOP_*_IMML)
1975 "mM" 3-bit immediate (1 .. 8) (MICROMIPSOP_*_IMMM)
1976 "mN" 2-bit immediate (0 .. 3) for register list (MICROMIPSOP_*_IMMN)
1977 "mO" 4-bit immediate (0 .. 15) (MICROMIPSOP_*_IMML)
1978 "mP" 5-bit immediate (0 .. 31) << 2 (MICROMIPSOP_*_IMMP)
1979 "mU" 5-bit immediate (0 .. 31) << 2 (MICROMIPSOP_*_IMMU)
1980 "mW" 6-bit immediate (0 .. 63) << 2 (MICROMIPSOP_*_IMMW)
1981 "mX" 4-bit immediate (-8 .. 7) (MICROMIPSOP_*_IMMX)
1982 "mY" 9-bit immediate (-258 .. -3, 2 .. 257) << 2 (MICROMIPSOP_*_IMMY)
1985 In most cases 32-bit microMIPS instructions use the same characters
1986 as MIPS (with ADDIUPC being a notable exception, but there are some
1989 "." 10-bit signed offset/number (MICROMIPSOP_*_OFFSET10)
1990 "1" 5-bit sync type (MICROMIPSOP_*_STYPE)
1991 "<" 5-bit shift amount (MICROMIPSOP_*_SHAMT)
1992 ">" shift amount between 32 and 63, stored after subtracting 32
1993 (MICROMIPSOP_*_SHAMT)
1994 "\" 3-bit position for ASET and ACLR (MICROMIPSOP_*_3BITPOS)
1995 "|" 4-bit trap code (MICROMIPSOP_*_TRAP)
1996 "~" 12-bit signed offset (MICROMIPSOP_*_OFFSET12)
1997 "a" 26-bit target address (MICROMIPSOP_*_TARGET)
1998 "+i" likewise, but flips bit 0
1999 "b" 5-bit base register (MICROMIPSOP_*_RS)
2000 "c" 10-bit higher breakpoint code (MICROMIPSOP_*_CODE)
2001 "d" 5-bit destination register specifier (MICROMIPSOP_*_RD)
2002 "h" 5-bit PREFX hint (MICROMIPSOP_*_PREFX)
2003 "i" 16-bit unsigned immediate (MICROMIPSOP_*_IMMEDIATE)
2004 "j" 16-bit signed immediate (MICROMIPSOP_*_DELTA)
2005 "k" 5-bit cache opcode in target register position (MICROMIPSOP_*_CACHE)
2006 "n" register list for 32-bit LWM/SWM instruction (MICROMIPSOP_*_RT)
2007 "o" 16-bit signed offset (MICROMIPSOP_*_DELTA)
2008 "p" 16-bit PC-relative branch target address (MICROMIPSOP_*_DELTA)
2009 "q" 10-bit lower breakpoint code (MICROMIPSOP_*_CODE2)
2010 "r" 5-bit same register used as both source and target (MICROMIPSOP_*_RS)
2011 "s" 5-bit source register specifier (MICROMIPSOP_*_RS)
2012 "t" 5-bit target register (MICROMIPSOP_*_RT)
2013 "u" 16-bit upper 16 bits of address (MICROMIPSOP_*_IMMEDIATE)
2014 "v" 5-bit same register used as both source and destination
2016 "w" 5-bit same register used as both target and destination
2018 "y" 5-bit source 3 register for ALNV.PS (MICROMIPSOP_*_RS3)
2019 "z" must be zero register
2020 "C" 23-bit coprocessor function code (MICROMIPSOP_*_COPZ)
2021 "B" 10-bit syscall/wait function code (MICROMIPSOP_*_CODE10)
2022 "K" 5-bit Hardware Register (RDHWR instruction) (MICROMIPSOP_*_RS)
2024 "+A" 5-bit INS/EXT/DINS/DEXT/DINSM/DEXTM position, which becomes
2025 LSB (MICROMIPSOP_*_EXTLSB).
2026 Enforces: 0 <= pos < 32.
2027 "+B" 5-bit INS/DINS size, which becomes MSB (MICROMIPSOP_*_INSMSB).
2028 Requires that "+A" or "+E" occur first to set position.
2029 Enforces: 0 < (pos+size) <= 32.
2030 "+C" 5-bit EXT/DEXT size, which becomes MSBD (MICROMIPSOP_*_EXTMSBD).
2031 Requires that "+A" or "+E" occur first to set position.
2032 Enforces: 0 < (pos+size) <= 32.
2033 (Also used by DEXT w/ different limits, but limits for
2034 that are checked by the M_DEXT macro.)
2035 "+E" 5-bit DINSU/DEXTU position, which becomes LSB-32 (MICROMIPSOP_*_EXTLSB).
2036 Enforces: 32 <= pos < 64.
2037 "+F" 5-bit DINSM/DINSU size, which becomes MSB-32 (MICROMIPSOP_*_INSMSB).
2038 Requires that "+A" or "+E" occur first to set position.
2039 Enforces: 32 < (pos+size) <= 64.
2040 "+G" 5-bit DEXTM size, which becomes MSBD-32 (MICROMIPSOP_*_EXTMSBD).
2041 Requires that "+A" or "+E" occur first to set position.
2042 Enforces: 32 < (pos+size) <= 64.
2043 "+H" 5-bit DEXTU size, which becomes MSBD (MICROMIPSOP_*_EXTMSBD).
2044 Requires that "+A" or "+E" occur first to set position.
2045 Enforces: 32 < (pos+size) <= 64.
2047 PC-relative addition (ADDIUPC) instruction:
2048 "mQ" 23-bit offset (-4194304 .. 4194303) << 2 (MICROMIPSOP_*_IMMQ)
2049 "mb" 3-bit MIPS registers 2-7, 16, 17 (MICROMIPSOP_*_MB) at bit 23
2051 Floating point instructions:
2052 "D" 5-bit destination register (MICROMIPSOP_*_FD)
2053 "M" 3-bit compare condition code (MICROMIPSOP_*_CCC)
2054 "N" 3-bit branch condition code (MICROMIPSOP_*_BCC)
2055 "R" 5-bit fr source 3 register (MICROMIPSOP_*_FR)
2056 "S" 5-bit fs source 1 register (MICROMIPSOP_*_FS)
2057 "T" 5-bit ft source 2 register (MICROMIPSOP_*_FT)
2058 "V" 5-bit same register used as floating source and destination or target
2061 Coprocessor instructions:
2062 "E" 5-bit target register (MICROMIPSOP_*_RT)
2063 "G" 5-bit source register (MICROMIPSOP_*_RS)
2064 "H" 3-bit sel field for (D)MTC* and (D)MFC* (MICROMIPSOP_*_SEL)
2067 "A" general 32 bit expression
2068 "I" 32-bit immediate (value placed in imm_expr).
2069 "F" 64-bit floating point constant in .rdata
2070 "L" 64-bit floating point constant in .lit8
2071 "f" 32-bit floating point constant
2072 "l" 32-bit floating point constant in .lit4
2075 "2" 2-bit unsigned immediate for byte align (MICROMIPSOP_*_BP)
2076 "3" 3-bit unsigned immediate (MICROMIPSOP_*_SA3)
2077 "4" 4-bit unsigned immediate (MICROMIPSOP_*_SA4)
2078 "5" 8-bit unsigned immediate (MICROMIPSOP_*_IMM8)
2079 "6" 5-bit unsigned immediate (MICROMIPSOP_*_RS)
2080 "7" 2-bit DSP accumulator register (MICROMIPSOP_*_DSPACC)
2081 "8" 6-bit unsigned immediate (MICROMIPSOP_*_WRDSP)
2082 "0" 6-bit signed immediate (MICROMIPSOP_*_DSPSFT)
2083 "@" 10-bit signed immediate (MICROMIPSOP_*_IMM10)
2084 "^" 5-bit unsigned immediate (MICROMIPSOP_*_RD)
2086 microMIPS Enhanced VA Scheme:
2087 "+j" 9-bit signed offset in bit 0 (OP_*_EVAOFFSET)
2090 "+d" 5-bit MSA register (FD)
2091 "+e" 5-bit MSA register (FS)
2092 "+h" 5-bit MSA register (FT)
2093 "+k" 5-bit GPR at bit 6
2094 "+l" 5-bit MSA control register at bit 6
2095 "+n" 5-bit MSA control register at bit 11
2096 "+o" 4-bit vector element index at bit 16
2097 "+u" 3-bit vector element index at bit 16
2098 "+v" 2-bit vector element index at bit 16
2099 "+w" 1-bit vector element index at bit 16
2100 "+x" 5-bit shift amount at bit 16
2101 "+T" (-512 .. 511) << 0 at bit 16
2102 "+U" (-512 .. 511) << 1 at bit 16
2103 "+V" (-512 .. 511) << 2 at bit 16
2104 "+W" (-512 .. 511) << 3 at bit 16
2105 "+~" 2 bit LSA/DLSA shift amount from 1 to 4 at bit 6
2106 "+!" 3 bit unsigned bit position at bit 16
2107 "+@" 4 bit unsigned bit position at bit 16
2108 "+#" 6 bit unsigned bit position at bit 16
2109 "+$" 5 bit unsigned immediate at bit 16
2110 "+%" 5 bit signed immediate at bit 16
2111 "+^" 10 bit signed immediate at bit 11
2112 "+&" 0 vector element index
2113 "+*" 5-bit register vector element index at bit 16
2114 "+|" 8-bit mask at bit 16
2117 "()" parens surrounding optional value
2118 "," separates operands
2119 "+" start of extension sequence
2120 "m" start of microMIPS extension sequence
2122 Characters used so far, for quick reference when adding more:
2125 "ABCDEFGHI KLMN RST V "
2126 "abcd f hijklmnopqrstuvw yz"
2128 Extension character sequences used so far ("+" followed by the
2129 following), for quick reference when adding more:
2135 Extension character sequences used so far ("m" followed by the
2136 following), for quick reference when adding more:
2139 " BCDEFGHIJ LMNOPQ U WXYZ"
2140 " bcdefghij lmn pq st xyz"
2143 extern const struct mips_operand *decode_micromips_operand (const char *);
2144 extern const struct mips_opcode micromips_opcodes[];
2145 extern const int bfd_micromips_num_opcodes;
2147 /* A NOP insn impemented as "or at,at,zero".
2148 Used to implement -mfix-loongson2f. */
2149 #define LOONGSON2F_NOP_INSN 0x00200825
2151 #endif /* _MIPS_H_ */
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