64c1118340
This code has never been used throughout the repository history, and likely not before either, as due to the assymetry of MIPS16 instruction set encoding there are no 32-bit shift operations having their immediate shift count placed in the position of the usual `rx' instruction field. gas/ * config/tc-mips.c (mips16_macro_build) <'>'>: Remove case. include/ * opcode/mips.h: Remove references to `>' operand code. opcodes/ * mips16-opc.c (decode_mips16_operand) <'>'>: Remove cases.
2296 lines
72 KiB
C
2296 lines
72 KiB
C
/* mips.h. Mips opcode list for GDB, the GNU debugger.
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Copyright (C) 1993-2016 Free Software Foundation, Inc.
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Contributed by Ralph Campbell and OSF
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Commented and modified by Ian Lance Taylor, Cygnus Support
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This file is part of GDB, GAS, and the GNU binutils.
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GDB, GAS, and the GNU binutils are free software; you can redistribute
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them and/or modify them under the terms of the GNU General Public
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License as published by the Free Software Foundation; either version 3,
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or (at your option) any later version.
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GDB, GAS, and the GNU binutils are distributed in the hope that they
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will be useful, but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this file; see the file COPYING3. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef _MIPS_H_
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#define _MIPS_H_
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#include "bfd.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* These are bit masks and shift counts to use to access the various
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fields of an instruction. To retrieve the X field of an
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instruction, use the expression
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(i >> OP_SH_X) & OP_MASK_X
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To set the same field (to j), use
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i = (i &~ (OP_MASK_X << OP_SH_X)) | (j << OP_SH_X)
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Make sure you use fields that are appropriate for the instruction,
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of course.
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The 'i' format uses OP, RS, RT and IMMEDIATE.
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The 'j' format uses OP and TARGET.
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The 'r' format uses OP, RS, RT, RD, SHAMT and FUNCT.
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The 'b' format uses OP, RS, RT and DELTA.
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The floating point 'i' format uses OP, RS, RT and IMMEDIATE.
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The floating point 'r' format uses OP, FMT, FT, FS, FD and FUNCT.
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A breakpoint instruction uses OP, CODE and SPEC (10 bits of the
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breakpoint instruction are not defined; Kane says the breakpoint
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code field in BREAK is 20 bits; yet MIPS assemblers and debuggers
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only use ten bits). An optional two-operand form of break/sdbbp
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allows the lower ten bits to be set too, and MIPS32 and later
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architectures allow 20 bits to be set with a signal operand
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(using CODE20).
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The syscall instruction uses CODE20.
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The general coprocessor instructions use COPZ. */
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#define OP_MASK_OP 0x3f
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#define OP_SH_OP 26
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#define OP_MASK_RS 0x1f
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#define OP_SH_RS 21
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#define OP_MASK_FR 0x1f
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#define OP_SH_FR 21
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#define OP_MASK_FMT 0x1f
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#define OP_SH_FMT 21
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#define OP_MASK_BCC 0x7
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#define OP_SH_BCC 18
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#define OP_MASK_CODE 0x3ff
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#define OP_SH_CODE 16
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#define OP_MASK_CODE2 0x3ff
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#define OP_SH_CODE2 6
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#define OP_MASK_RT 0x1f
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#define OP_SH_RT 16
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#define OP_MASK_FT 0x1f
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#define OP_SH_FT 16
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#define OP_MASK_CACHE 0x1f
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#define OP_SH_CACHE 16
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#define OP_MASK_RD 0x1f
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#define OP_SH_RD 11
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#define OP_MASK_FS 0x1f
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#define OP_SH_FS 11
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#define OP_MASK_PREFX 0x1f
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#define OP_SH_PREFX 11
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#define OP_MASK_CCC 0x7
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#define OP_SH_CCC 8
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#define OP_MASK_CODE20 0xfffff /* 20 bit syscall/breakpoint code. */
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#define OP_SH_CODE20 6
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#define OP_MASK_SHAMT 0x1f
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#define OP_SH_SHAMT 6
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#define OP_MASK_EXTLSB OP_MASK_SHAMT
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#define OP_SH_EXTLSB OP_SH_SHAMT
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#define OP_MASK_STYPE OP_MASK_SHAMT
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#define OP_SH_STYPE OP_SH_SHAMT
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#define OP_MASK_FD 0x1f
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#define OP_SH_FD 6
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#define OP_MASK_TARGET 0x3ffffff
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#define OP_SH_TARGET 0
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#define OP_MASK_COPZ 0x1ffffff
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#define OP_SH_COPZ 0
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#define OP_MASK_IMMEDIATE 0xffff
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#define OP_SH_IMMEDIATE 0
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#define OP_MASK_DELTA 0xffff
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#define OP_SH_DELTA 0
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#define OP_MASK_FUNCT 0x3f
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#define OP_SH_FUNCT 0
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#define OP_MASK_SPEC 0x3f
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#define OP_SH_SPEC 0
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#define OP_SH_LOCC 8 /* FP condition code. */
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#define OP_SH_HICC 18 /* FP condition code. */
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#define OP_MASK_CC 0x7
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#define OP_SH_COP1NORM 25 /* Normal COP1 encoding. */
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#define OP_MASK_COP1NORM 0x1 /* a single bit. */
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#define OP_SH_COP1SPEC 21 /* COP1 encodings. */
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#define OP_MASK_COP1SPEC 0xf
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#define OP_MASK_COP1SCLR 0x4
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#define OP_MASK_COP1CMP 0x3
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#define OP_SH_COP1CMP 4
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#define OP_SH_FORMAT 21 /* FP short format field. */
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#define OP_MASK_FORMAT 0x7
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#define OP_SH_TRUE 16
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#define OP_MASK_TRUE 0x1
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#define OP_SH_GE 17
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#define OP_MASK_GE 0x01
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#define OP_SH_UNSIGNED 16
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#define OP_MASK_UNSIGNED 0x1
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#define OP_SH_HINT 16
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#define OP_MASK_HINT 0x1f
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#define OP_SH_MMI 0 /* Multimedia (parallel) op. */
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#define OP_MASK_MMI 0x3f
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#define OP_SH_MMISUB 6
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#define OP_MASK_MMISUB 0x1f
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#define OP_MASK_PERFREG 0x1f /* Performance monitoring. */
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#define OP_SH_PERFREG 1
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#define OP_SH_SEL 0 /* Coprocessor select field. */
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#define OP_MASK_SEL 0x7 /* The sel field of mfcZ and mtcZ. */
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#define OP_SH_CODE19 6 /* 19 bit wait code. */
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#define OP_MASK_CODE19 0x7ffff
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#define OP_SH_ALN 21
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#define OP_MASK_ALN 0x7
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#define OP_SH_VSEL 21
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#define OP_MASK_VSEL 0x1f
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#define OP_MASK_VECBYTE 0x7 /* Selector field is really 4 bits,
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but 0x8-0xf don't select bytes. */
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#define OP_SH_VECBYTE 22
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#define OP_MASK_VECALIGN 0x7 /* Vector byte-align (alni.ob) op. */
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#define OP_SH_VECALIGN 21
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#define OP_MASK_INSMSB 0x1f /* "ins" MSB. */
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#define OP_SH_INSMSB 11
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#define OP_MASK_EXTMSBD 0x1f /* "ext" MSBD. */
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#define OP_SH_EXTMSBD 11
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/* MIPS DSP ASE */
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#define OP_SH_DSPACC 11
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#define OP_MASK_DSPACC 0x3
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#define OP_SH_DSPACC_S 21
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#define OP_MASK_DSPACC_S 0x3
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#define OP_SH_DSPSFT 20
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#define OP_MASK_DSPSFT 0x3f
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#define OP_SH_DSPSFT_7 19
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#define OP_MASK_DSPSFT_7 0x7f
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#define OP_SH_SA3 21
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#define OP_MASK_SA3 0x7
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#define OP_SH_SA4 21
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#define OP_MASK_SA4 0xf
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#define OP_SH_IMM8 16
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#define OP_MASK_IMM8 0xff
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#define OP_SH_IMM10 16
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#define OP_MASK_IMM10 0x3ff
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#define OP_SH_WRDSP 11
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#define OP_MASK_WRDSP 0x3f
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#define OP_SH_RDDSP 16
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#define OP_MASK_RDDSP 0x3f
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#define OP_SH_BP 11
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#define OP_MASK_BP 0x3
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/* MIPS MT ASE */
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#define OP_SH_MT_U 5
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#define OP_MASK_MT_U 0x1
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#define OP_SH_MT_H 4
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#define OP_MASK_MT_H 0x1
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#define OP_SH_MTACC_T 18
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#define OP_MASK_MTACC_T 0x3
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#define OP_SH_MTACC_D 13
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#define OP_MASK_MTACC_D 0x3
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/* MIPS MCU ASE */
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#define OP_MASK_3BITPOS 0x7
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#define OP_SH_3BITPOS 12
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#define OP_MASK_OFFSET12 0xfff
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#define OP_SH_OFFSET12 0
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#define OP_OP_COP0 0x10
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#define OP_OP_COP1 0x11
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#define OP_OP_COP2 0x12
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#define OP_OP_COP3 0x13
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#define OP_OP_LWC1 0x31
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#define OP_OP_LWC2 0x32
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#define OP_OP_LWC3 0x33 /* a.k.a. pref */
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#define OP_OP_LDC1 0x35
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#define OP_OP_LDC2 0x36
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#define OP_OP_LDC3 0x37 /* a.k.a. ld */
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#define OP_OP_SWC1 0x39
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#define OP_OP_SWC2 0x3a
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#define OP_OP_SWC3 0x3b
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#define OP_OP_SDC1 0x3d
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#define OP_OP_SDC2 0x3e
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#define OP_OP_SDC3 0x3f /* a.k.a. sd */
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/* MIPS VIRT ASE */
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#define OP_MASK_CODE10 0x3ff
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#define OP_SH_CODE10 11
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/* Values in the 'VSEL' field. */
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#define MDMX_FMTSEL_IMM_QH 0x1d
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#define MDMX_FMTSEL_IMM_OB 0x1e
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#define MDMX_FMTSEL_VEC_QH 0x15
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#define MDMX_FMTSEL_VEC_OB 0x16
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/* UDI */
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#define OP_SH_UDI1 6
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#define OP_MASK_UDI1 0x1f
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#define OP_SH_UDI2 6
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#define OP_MASK_UDI2 0x3ff
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#define OP_SH_UDI3 6
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#define OP_MASK_UDI3 0x7fff
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#define OP_SH_UDI4 6
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#define OP_MASK_UDI4 0xfffff
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/* Octeon */
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#define OP_SH_BBITIND 16
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#define OP_MASK_BBITIND 0x1f
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#define OP_SH_CINSPOS 6
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#define OP_MASK_CINSPOS 0x1f
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#define OP_SH_CINSLM1 11
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#define OP_MASK_CINSLM1 0x1f
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#define OP_SH_SEQI 6
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#define OP_MASK_SEQI 0x3ff
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/* Loongson */
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#define OP_SH_OFFSET_A 6
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#define OP_MASK_OFFSET_A 0xff
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#define OP_SH_OFFSET_B 3
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#define OP_MASK_OFFSET_B 0xff
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#define OP_SH_OFFSET_C 6
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#define OP_MASK_OFFSET_C 0x1ff
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#define OP_SH_RZ 0
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#define OP_MASK_RZ 0x1f
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#define OP_SH_FZ 0
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#define OP_MASK_FZ 0x1f
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/* Every MICROMIPSOP_X definition requires a corresponding OP_X
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definition, and vice versa. This simplifies various parts
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of the operand handling in GAS. The fields below only exist
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in the microMIPS encoding, so define each one to have an empty
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range. */
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#define OP_MASK_TRAP 0
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#define OP_SH_TRAP 0
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#define OP_MASK_OFFSET10 0
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#define OP_SH_OFFSET10 0
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#define OP_MASK_RS3 0
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#define OP_SH_RS3 0
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#define OP_MASK_MB 0
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#define OP_SH_MB 0
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#define OP_MASK_MC 0
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#define OP_SH_MC 0
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#define OP_MASK_MD 0
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#define OP_SH_MD 0
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#define OP_MASK_ME 0
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#define OP_SH_ME 0
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#define OP_MASK_MF 0
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#define OP_SH_MF 0
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#define OP_MASK_MG 0
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#define OP_SH_MG 0
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#define OP_MASK_MH 0
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#define OP_SH_MH 0
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#define OP_MASK_MJ 0
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#define OP_SH_MJ 0
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#define OP_MASK_ML 0
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#define OP_SH_ML 0
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#define OP_MASK_MM 0
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#define OP_SH_MM 0
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#define OP_MASK_MN 0
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#define OP_SH_MN 0
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#define OP_MASK_MP 0
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#define OP_SH_MP 0
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#define OP_MASK_MQ 0
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#define OP_SH_MQ 0
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#define OP_MASK_IMMA 0
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#define OP_SH_IMMA 0
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#define OP_MASK_IMMB 0
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#define OP_SH_IMMB 0
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#define OP_MASK_IMMC 0
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#define OP_SH_IMMC 0
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#define OP_MASK_IMMF 0
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#define OP_SH_IMMF 0
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#define OP_MASK_IMMG 0
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#define OP_SH_IMMG 0
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#define OP_MASK_IMMH 0
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#define OP_SH_IMMH 0
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#define OP_MASK_IMMI 0
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#define OP_SH_IMMI 0
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#define OP_MASK_IMMJ 0
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#define OP_SH_IMMJ 0
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#define OP_MASK_IMML 0
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#define OP_SH_IMML 0
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#define OP_MASK_IMMM 0
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#define OP_SH_IMMM 0
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#define OP_MASK_IMMN 0
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#define OP_SH_IMMN 0
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#define OP_MASK_IMMO 0
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#define OP_SH_IMMO 0
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#define OP_MASK_IMMP 0
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#define OP_SH_IMMP 0
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#define OP_MASK_IMMQ 0
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#define OP_SH_IMMQ 0
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#define OP_MASK_IMMU 0
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#define OP_SH_IMMU 0
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#define OP_MASK_IMMW 0
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#define OP_SH_IMMW 0
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#define OP_MASK_IMMX 0
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#define OP_SH_IMMX 0
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#define OP_MASK_IMMY 0
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#define OP_SH_IMMY 0
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/* Enhanced VA Scheme */
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#define OP_SH_EVAOFFSET 7
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#define OP_MASK_EVAOFFSET 0x1ff
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/* Enumerates the various types of MIPS operand. */
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enum mips_operand_type {
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/* Described by mips_int_operand. */
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OP_INT,
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/* Described by mips_mapped_int_operand. */
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OP_MAPPED_INT,
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/* Described by mips_msb_operand. */
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OP_MSB,
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/* Described by mips_reg_operand. */
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OP_REG,
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/* Like OP_REG, but can be omitted if the register is the same as the
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previous operand. */
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OP_OPTIONAL_REG,
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/* Described by mips_reg_pair_operand. */
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OP_REG_PAIR,
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/* Described by mips_pcrel_operand. */
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OP_PCREL,
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/* A performance register. The field is 5 bits in size, but the supported
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values are much more restricted. */
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OP_PERF_REG,
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/* The final operand in a microMIPS ADDIUSP instruction. It mostly acts
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as a normal 9-bit signed offset that is multiplied by four, but there
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are four special cases:
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-2 * 4 => -258 * 4
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-1 * 4 => -257 * 4
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0 * 4 => 256 * 4
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1 * 4 => 257 * 4. */
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OP_ADDIUSP_INT,
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/* The target of a (D)CLO or (D)CLZ instruction. The operand spans two
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5-bit register fields, both of which must be set to the destination
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register. */
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OP_CLO_CLZ_DEST,
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/* A register list for a microMIPS LWM or SWM instruction. The operand
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size determines whether the 16-bit or 32-bit encoding is required. */
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OP_LWM_SWM_LIST,
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/* The register list for an emulated MIPS16 ENTRY or EXIT instruction. */
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OP_ENTRY_EXIT_LIST,
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/* The register list and frame size for a MIPS16 SAVE or RESTORE
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instruction. */
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OP_SAVE_RESTORE_LIST,
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/* A 10-bit field VVVVVNNNNN used for octobyte and quadhalf instructions:
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V Meaning
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----- -------
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0EEE0 8 copies of $vN[E], OB format
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0EE01 4 copies of $vN[E], QH format
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10110 all 8 elements of $vN, OB format
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10101 all 4 elements of $vN, QH format
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11110 8 copies of immediate N, OB format
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11101 4 copies of immediate N, QH format. */
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OP_MDMX_IMM_REG,
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/* A register operand that must match the destination register. */
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OP_REPEAT_DEST_REG,
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/* A register operand that must match the previous register. */
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OP_REPEAT_PREV_REG,
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/* $pc, which has no encoding in the architectural instruction. */
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OP_PC,
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/* A 4-bit XYZW channel mask or 2-bit XYZW index; the size determines
|
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which. */
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OP_VU0_SUFFIX,
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/* Like OP_VU0_SUFFIX, but used when the operand's value has already
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been set. Any suffix used here must match the previous value. */
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OP_VU0_MATCH_SUFFIX,
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/* An index selected by an integer, e.g. [1]. */
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OP_IMM_INDEX,
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/* An index selected by a register, e.g. [$2]. */
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OP_REG_INDEX,
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/* The operand spans two 5-bit register fields, both of which must be set to
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the source register. */
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OP_SAME_RS_RT,
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/* Described by mips_prev_operand. */
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OP_CHECK_PREV,
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/* A register operand that must not be zero. */
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OP_NON_ZERO_REG
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};
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/* Enumerates the types of MIPS register. */
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enum mips_reg_operand_type {
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/* General registers $0-$31. Software names like $at can also be used. */
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OP_REG_GP,
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/* Floating-point registers $f0-$f31. */
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OP_REG_FP,
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/* Coprocessor condition code registers $cc0-$cc7. FPU condition codes
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||
can also be written $fcc0-$fcc7. */
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OP_REG_CCC,
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/* FPRs used in a vector capacity. They can be written $f0-$f31
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or $v0-$v31, although the latter form is not used for the VR5400
|
||
vector instructions. */
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OP_REG_VEC,
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/* DSP accumulator registers $ac0-$ac3. */
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OP_REG_ACC,
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||
/* Coprocessor registers $0-$31. Mnemonic names like c0_cause can
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||
also be used in some contexts. */
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||
OP_REG_COPRO,
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|
||
/* Hardware registers $0-$31. Mnemonic names like hwr_cpunum can
|
||
also be used in some contexts. */
|
||
OP_REG_HW,
|
||
|
||
/* Floating-point registers $vf0-$vf31. */
|
||
OP_REG_VF,
|
||
|
||
/* Integer registers $vi0-$vi31. */
|
||
OP_REG_VI,
|
||
|
||
/* R5900 VU0 registers $I, $Q, $R and $ACC. */
|
||
OP_REG_R5900_I,
|
||
OP_REG_R5900_Q,
|
||
OP_REG_R5900_R,
|
||
OP_REG_R5900_ACC,
|
||
|
||
/* MSA registers $w0-$w31. */
|
||
OP_REG_MSA,
|
||
|
||
/* MSA control registers $0-$31. */
|
||
OP_REG_MSA_CTRL
|
||
};
|
||
|
||
/* Base class for all operands. */
|
||
struct mips_operand
|
||
{
|
||
/* The type of the operand. */
|
||
enum mips_operand_type type;
|
||
|
||
/* The operand occupies SIZE bits of the instruction, starting at LSB. */
|
||
unsigned short size;
|
||
unsigned short lsb;
|
||
};
|
||
|
||
/* Describes an integer operand with a regular encoding pattern. */
|
||
struct mips_int_operand
|
||
{
|
||
struct mips_operand root;
|
||
|
||
/* The low ROOT.SIZE bits of MAX_VAL encodes (MAX_VAL + BIAS) << SHIFT.
|
||
The cyclically previous field value encodes 1 << SHIFT less than that,
|
||
and so on. E.g.
|
||
|
||
- for { { T, 4, L }, 14, 0, 0 }, field values 0...14 encode themselves,
|
||
but 15 encodes -1.
|
||
|
||
- { { T, 8, L }, 127, 0, 2 } is a normal signed 8-bit operand that is
|
||
shifted left two places.
|
||
|
||
- { { T, 3, L }, 8, 0, 0 } is a normal unsigned 3-bit operand except
|
||
that 0 encodes 8.
|
||
|
||
- { { ... }, 0, 1, 3 } means that N encodes (N + 1) << 3. */
|
||
unsigned int max_val;
|
||
int bias;
|
||
unsigned int shift;
|
||
|
||
/* True if the operand should be printed as hex rather than decimal. */
|
||
bfd_boolean print_hex;
|
||
};
|
||
|
||
/* Uses a lookup table to describe a small integer operand. */
|
||
struct mips_mapped_int_operand
|
||
{
|
||
struct mips_operand root;
|
||
|
||
/* Maps each encoding value to the integer that it represents. */
|
||
const int *int_map;
|
||
|
||
/* True if the operand should be printed as hex rather than decimal. */
|
||
bfd_boolean print_hex;
|
||
};
|
||
|
||
/* An operand that encodes the most significant bit position of a bitfield.
|
||
Given a bitfield that spans bits [MSB, LSB], some operands of this type
|
||
encode MSB directly while others encode MSB - LSB. Each operand of this
|
||
type is preceded by an integer operand that specifies LSB.
|
||
|
||
The assembly form varies between instructions. For some instructions,
|
||
such as EXT, the operand is written as the bitfield size. For others,
|
||
such as EXTS, it is written in raw MSB - LSB form. */
|
||
struct mips_msb_operand
|
||
{
|
||
struct mips_operand root;
|
||
|
||
/* The assembly-level operand encoded by a field value of 0. */
|
||
int bias;
|
||
|
||
/* True if the operand encodes MSB directly, false if it encodes
|
||
MSB - LSB. */
|
||
bfd_boolean add_lsb;
|
||
|
||
/* The maximum value of MSB + 1. */
|
||
unsigned int opsize;
|
||
};
|
||
|
||
/* Describes a single register operand. */
|
||
struct mips_reg_operand
|
||
{
|
||
struct mips_operand root;
|
||
|
||
/* The type of register. */
|
||
enum mips_reg_operand_type reg_type;
|
||
|
||
/* If nonnull, REG_MAP[N] gives the register associated with encoding N,
|
||
otherwise the encoding is the same as the register number. */
|
||
const unsigned char *reg_map;
|
||
};
|
||
|
||
/* Describes an operand that which must match a condition based on the
|
||
previous operand. */
|
||
struct mips_check_prev_operand
|
||
{
|
||
struct mips_operand root;
|
||
|
||
bfd_boolean greater_than_ok;
|
||
bfd_boolean less_than_ok;
|
||
bfd_boolean equal_ok;
|
||
bfd_boolean zero_ok;
|
||
};
|
||
|
||
/* Describes an operand that encodes a pair of registers. */
|
||
struct mips_reg_pair_operand
|
||
{
|
||
struct mips_operand root;
|
||
|
||
/* The type of register. */
|
||
enum mips_reg_operand_type reg_type;
|
||
|
||
/* Encoding N represents REG1_MAP[N], REG2_MAP[N]. */
|
||
unsigned char *reg1_map;
|
||
unsigned char *reg2_map;
|
||
};
|
||
|
||
/* Describes an operand that is calculated relative to a base PC.
|
||
The base PC is usually the address of the following instruction,
|
||
but the rules for MIPS16 instructions like ADDIUPC are more complicated. */
|
||
struct mips_pcrel_operand
|
||
{
|
||
/* Encodes the offset. */
|
||
struct mips_int_operand root;
|
||
|
||
/* The low ALIGN_LOG2 bits of the base PC are cleared to give PC',
|
||
which is then added to the offset encoded by ROOT. */
|
||
unsigned int align_log2 : 8;
|
||
|
||
/* If INCLUDE_ISA_BIT, the ISA bit of the original base PC is then
|
||
reinstated. This is true for jumps and branches and false for
|
||
PC-relative data instructions. */
|
||
unsigned int include_isa_bit : 1;
|
||
|
||
/* If FLIP_ISA_BIT, the ISA bit of the result is inverted.
|
||
This is true for JALX and false otherwise. */
|
||
unsigned int flip_isa_bit : 1;
|
||
};
|
||
|
||
/* Return true if the assembly syntax allows OPERAND to be omitted. */
|
||
|
||
static inline bfd_boolean
|
||
mips_optional_operand_p (const struct mips_operand *operand)
|
||
{
|
||
return (operand->type == OP_OPTIONAL_REG
|
||
|| operand->type == OP_REPEAT_PREV_REG);
|
||
}
|
||
|
||
/* Return a version of INSN in which the field specified by OPERAND
|
||
has value UVAL. */
|
||
|
||
static inline unsigned int
|
||
mips_insert_operand (const struct mips_operand *operand, unsigned int insn,
|
||
unsigned int uval)
|
||
{
|
||
unsigned int mask;
|
||
|
||
mask = (1 << operand->size) - 1;
|
||
insn &= ~(mask << operand->lsb);
|
||
insn |= (uval & mask) << operand->lsb;
|
||
return insn;
|
||
}
|
||
|
||
/* Extract OPERAND from instruction INSN. */
|
||
|
||
static inline unsigned int
|
||
mips_extract_operand (const struct mips_operand *operand, unsigned int insn)
|
||
{
|
||
return (insn >> operand->lsb) & ((1 << operand->size) - 1);
|
||
}
|
||
|
||
/* UVAL is the value encoded by OPERAND. Return it in signed form. */
|
||
|
||
static inline int
|
||
mips_signed_operand (const struct mips_operand *operand, unsigned int uval)
|
||
{
|
||
unsigned int sign_bit, mask;
|
||
|
||
mask = (1 << operand->size) - 1;
|
||
sign_bit = 1 << (operand->size - 1);
|
||
return ((uval + sign_bit) & mask) - sign_bit;
|
||
}
|
||
|
||
/* Return the integer that OPERAND encodes as UVAL. */
|
||
|
||
static inline int
|
||
mips_decode_int_operand (const struct mips_int_operand *operand,
|
||
unsigned int uval)
|
||
{
|
||
uval |= (operand->max_val - uval) & -(1 << operand->root.size);
|
||
uval += operand->bias;
|
||
uval <<= operand->shift;
|
||
return uval;
|
||
}
|
||
|
||
/* Return the maximum value that can be encoded by OPERAND. */
|
||
|
||
static inline int
|
||
mips_int_operand_max (const struct mips_int_operand *operand)
|
||
{
|
||
return (operand->max_val + operand->bias) << operand->shift;
|
||
}
|
||
|
||
/* Return the minimum value that can be encoded by OPERAND. */
|
||
|
||
static inline int
|
||
mips_int_operand_min (const struct mips_int_operand *operand)
|
||
{
|
||
unsigned int mask;
|
||
|
||
mask = (1 << operand->root.size) - 1;
|
||
return mips_int_operand_max (operand) - (mask << operand->shift);
|
||
}
|
||
|
||
/* Return the register that OPERAND encodes as UVAL. */
|
||
|
||
static inline int
|
||
mips_decode_reg_operand (const struct mips_reg_operand *operand,
|
||
unsigned int uval)
|
||
{
|
||
if (operand->reg_map)
|
||
uval = operand->reg_map[uval];
|
||
return uval;
|
||
}
|
||
|
||
/* PC-relative operand OPERAND has value UVAL and is relative to BASE_PC.
|
||
Return the address that it encodes. */
|
||
|
||
static inline bfd_vma
|
||
mips_decode_pcrel_operand (const struct mips_pcrel_operand *operand,
|
||
bfd_vma base_pc, unsigned int uval)
|
||
{
|
||
bfd_vma addr;
|
||
|
||
addr = base_pc & -(1 << operand->align_log2);
|
||
addr += mips_decode_int_operand (&operand->root, uval);
|
||
if (operand->include_isa_bit)
|
||
addr |= base_pc & 1;
|
||
if (operand->flip_isa_bit)
|
||
addr ^= 1;
|
||
return addr;
|
||
}
|
||
|
||
/* 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;
|
||
/* A collection of bits describing the ASE of which this instruction
|
||
or macro is a member. */
|
||
unsigned long ase;
|
||
/* A collection of bits describing the instruction sets of which this
|
||
instruction or macro is not a member. */
|
||
unsigned long exclusions;
|
||
};
|
||
|
||
/* 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_*_STYPE)
|
||
"<" 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)
|
||
"+i" likewise, but flips bit 0
|
||
"b" 5 bit base register (OP_*_RS)
|
||
"c" 10 bit breakpoint code (OP_*_CODE)
|
||
"d" 5 bit destination register specifier (OP_*_RD)
|
||
"h" 5 bit prefx hint (OP_*_PREFX)
|
||
"i" 16 bit unsigned immediate (OP_*_IMMEDIATE)
|
||
"j" 16 bit signed immediate (OP_*_DELTA)
|
||
"k" 5 bit cache opcode in target register position (OP_*_CACHE)
|
||
"o" 16 bit signed offset (OP_*_DELTA)
|
||
"p" 16 bit PC relative branch target address (OP_*_DELTA)
|
||
"q" 10 bit extra breakpoint code (OP_*_CODE2)
|
||
"r" 5 bit same register used as both source and target (OP_*_RS)
|
||
"s" 5 bit source register specifier (OP_*_RS)
|
||
"t" 5 bit target register (OP_*_RT)
|
||
"u" 16 bit upper 16 bits of address (OP_*_IMMEDIATE)
|
||
"v" 5 bit same register used as both source and destination (OP_*_RS)
|
||
"w" 5 bit same register used as both target and destination (OP_*_RT)
|
||
"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)
|
||
|
||
Macro instructions:
|
||
"A" General 32 bit expression
|
||
"I" 32 bit immediate (value placed in imm_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 and VR5400 instruction operands (note that while these use the
|
||
FP register fields, the MDMX instructions accept both $fN and $vN names
|
||
for the registers):
|
||
"O" alignment offset (OP_*_ALN)
|
||
"Q" vector/scalar/immediate source (OP_*_VSEL and OP_*_FT)
|
||
"X" destination register (OP_*_FD)
|
||
"Y" source register (OP_*_FS)
|
||
"Z" source register (OP_*_FT)
|
||
|
||
R5900 VU0 Macromode instructions:
|
||
"+5" 5 bit floating point register (FD)
|
||
"+6" 5 bit floating point register (FS)
|
||
"+7" 5 bit floating point register (FT)
|
||
"+8" 5 bit integer register (FD)
|
||
"+9" 5 bit integer register (FS)
|
||
"+0" 5 bit integer register (FT)
|
||
"+K" match an existing 4-bit channel mask starting at bit 21
|
||
"+L" 2-bit channel index starting at bit 21
|
||
"+M" 2-bit channel index starting at bit 23
|
||
"+N" match an existing 2-bit channel index starting at bit 0
|
||
"+f" 15 bit immediate for VCALLMS
|
||
"+g" 5 bit signed immediate for VIADDI
|
||
"+m" $ACC register (syntax only)
|
||
"+q" $Q register (syntax only)
|
||
"+r" $R register (syntax only)
|
||
"+y" $I register (syntax only)
|
||
"#+" "++" decorator in ($reg++) sequence
|
||
"#-" "--" decorator in (--$reg) sequence
|
||
|
||
DSP ASE usage:
|
||
"2" 2 bit unsigned immediate for byte align (OP_*_BP)
|
||
"3" 3 bit unsigned immediate (OP_*_SA3)
|
||
"4" 4 bit unsigned immediate (OP_*_SA4)
|
||
"5" 8 bit unsigned immediate (OP_*_IMM8)
|
||
"6" 5 bit unsigned immediate (OP_*_RS)
|
||
"7" 2 bit dsp accumulator register (OP_*_DSPACC)
|
||
"8" 6 bit unsigned immediate (OP_*_WRDSP)
|
||
"9" 2 bit dsp accumulator register (OP_*_DSPACC_S)
|
||
"0" 6 bit signed immediate (OP_*_DSPSFT)
|
||
":" 7 bit signed immediate (OP_*_DSPSFT_7)
|
||
"'" 6 bit unsigned immediate (OP_*_RDDSP)
|
||
"@" 10 bit signed immediate (OP_*_IMM10)
|
||
|
||
MT ASE usage:
|
||
"!" 1 bit usermode flag (OP_*_MT_U)
|
||
"$" 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)
|
||
|
||
MCU ASE usage:
|
||
"~" 12 bit offset (OP_*_OFFSET12)
|
||
"\" 3 bit position for aset and aclr (OP_*_3BITPOS)
|
||
|
||
VIRT ASE usage:
|
||
"+J" 10-bit hypcall code (OP_*CODE10)
|
||
|
||
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 cins32/exts32. Requires msb position
|
||
of the field to be <= 31.
|
||
"+S" Length-minus-one field of cins/exts. Requires msb position
|
||
of the field to be <= 63.
|
||
|
||
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)
|
||
|
||
Enhanced VA Scheme:
|
||
"+j" 9-bit signed offset in bit 7 (OP_*_EVAOFFSET)
|
||
|
||
MSA Extension:
|
||
"+d" 5-bit MSA register (FD)
|
||
"+e" 5-bit MSA register (FS)
|
||
"+h" 5-bit MSA register (FT)
|
||
"+k" 5-bit GPR at bit 6
|
||
"+l" 5-bit MSA control register at bit 6
|
||
"+n" 5-bit MSA control register at bit 11
|
||
"+o" 4-bit vector element index at bit 16
|
||
"+u" 3-bit vector element index at bit 16
|
||
"+v" 2-bit vector element index at bit 16
|
||
"+w" 1-bit vector element index at bit 16
|
||
"+T" (-512 .. 511) << 0 at bit 16
|
||
"+U" (-512 .. 511) << 1 at bit 16
|
||
"+V" (-512 .. 511) << 2 at bit 16
|
||
"+W" (-512 .. 511) << 3 at bit 16
|
||
"+~" 2 bit LSA/DLSA shift amount from 1 to 4 at bit 6
|
||
"+!" 3 bit unsigned bit position at bit 16
|
||
"+@" 4 bit unsigned bit position at bit 16
|
||
"+#" 6 bit unsigned bit position at bit 16
|
||
"+$" 5 bit unsigned immediate at bit 16
|
||
"+%" 5 bit signed immediate at bit 16
|
||
"+^" 10 bit signed immediate at bit 11
|
||
"+&" 0 vector element index
|
||
"+*" 5-bit register vector element index at bit 16
|
||
"+|" 8-bit mask at bit 16
|
||
|
||
MIPS R6:
|
||
"+:" 11-bit mask at bit 0
|
||
"+'" 26 bit PC relative branch target address
|
||
"+"" 21 bit PC relative branch target address
|
||
"+;" 5 bit same register in both OP_*_RS and OP_*_RT
|
||
"+I" 2bit unsigned bit position at bit 6
|
||
"+O" 3bit unsigned bit position at bit 6
|
||
"+R" must be program counter
|
||
"-a" (-262144 .. 262143) << 2 at bit 0
|
||
"-b" (-131072 .. 131071) << 3 at bit 0
|
||
"-d" Same as destination register GP
|
||
"-s" 5 bit source register specifier (OP_*_RS) not $0
|
||
"-t" 5 bit source register specifier (OP_*_RT) not $0
|
||
"-u" 5 bit source register specifier (OP_*_RT) greater than OP_*_RS
|
||
"-v" 5 bit source register specifier (OP_*_RT) not $0 not OP_*_RS
|
||
"-w" 5 bit source register specifier (OP_*_RT) less than or equal to OP_*_RS
|
||
"-x" 5 bit source register specifier (OP_*_RT) greater than or
|
||
equal to OP_*_RS
|
||
"-y" 5 bit source register specifier (OP_*_RT) not $0 less than OP_*_RS
|
||
"-A" symbolic offset (-262144 .. 262143) << 2 at bit 0
|
||
"-B" symbolic offset (-131072 .. 131071) << 3 at bit 0
|
||
|
||
Other:
|
||
"()" parens surrounding optional value
|
||
"," separates operands
|
||
"+" Start of extension sequence.
|
||
|
||
Characters used so far, for quick reference when adding more:
|
||
"1234567890"
|
||
"%[]<>(),+-:'@!#$*&\~"
|
||
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||
"abcdefghijklopqrstuvwxz"
|
||
|
||
Extension character sequences used so far ("+" followed by the
|
||
following), for quick reference when adding more:
|
||
"1234567890"
|
||
"~!@#$%^&*|:'";"
|
||
"ABCEFGHIJKLMNOPQRSTUVWXZ"
|
||
"abcdefghijklmnopqrstuvwxyz"
|
||
|
||
Extension character sequences used so far ("-" followed by the
|
||
following), for quick reference when adding more:
|
||
"AB"
|
||
"abdstuvwxy"
|
||
*/
|
||
|
||
/* These are the bits which may be set in the pinfo field of an
|
||
instructions, if it is not equal to INSN_MACRO. */
|
||
|
||
/* Writes to operand number N. */
|
||
#define INSN_WRITE_SHIFT 0
|
||
#define INSN_WRITE_1 0x00000001
|
||
#define INSN_WRITE_2 0x00000002
|
||
#define INSN_WRITE_ALL 0x00000003
|
||
/* Reads from operand number N. */
|
||
#define INSN_READ_SHIFT 2
|
||
#define INSN_READ_1 0x00000004
|
||
#define INSN_READ_2 0x00000008
|
||
#define INSN_READ_3 0x00000010
|
||
#define INSN_READ_4 0x00000020
|
||
#define INSN_READ_ALL 0x0000003c
|
||
/* Modifies general purpose register 31. */
|
||
#define INSN_WRITE_GPR_31 0x00000040
|
||
/* Modifies coprocessor condition code. */
|
||
#define INSN_WRITE_COND_CODE 0x00000080
|
||
/* Reads coprocessor condition code. */
|
||
#define INSN_READ_COND_CODE 0x00000100
|
||
/* TLB operation. */
|
||
#define INSN_TLB 0x00000200
|
||
/* Reads coprocessor register other than floating point register. */
|
||
#define INSN_COP 0x00000400
|
||
/* Instruction loads value from memory. */
|
||
#define INSN_LOAD_MEMORY 0x00000800
|
||
/* Instruction loads value from coprocessor, (may require delay). */
|
||
#define INSN_LOAD_COPROC 0x00001000
|
||
/* Instruction has unconditional branch delay slot. */
|
||
#define INSN_UNCOND_BRANCH_DELAY 0x00002000
|
||
/* Instruction has conditional branch delay slot. */
|
||
#define INSN_COND_BRANCH_DELAY 0x00004000
|
||
/* Conditional branch likely: if branch not taken, insn nullified. */
|
||
#define INSN_COND_BRANCH_LIKELY 0x00008000
|
||
/* Moves to coprocessor register, (may require delay). */
|
||
#define INSN_COPROC_MOVE 0x00010000
|
||
/* Loads coprocessor register from memory, requiring delay. */
|
||
#define INSN_COPROC_MEMORY_DELAY 0x00020000
|
||
/* Reads the HI register. */
|
||
#define INSN_READ_HI 0x00040000
|
||
/* Reads the LO register. */
|
||
#define INSN_READ_LO 0x00080000
|
||
/* Modifies the HI register. */
|
||
#define INSN_WRITE_HI 0x00100000
|
||
/* Modifies the LO register. */
|
||
#define INSN_WRITE_LO 0x00200000
|
||
/* 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 0x00400000
|
||
/* Instruction stores value into memory. */
|
||
#define INSN_STORE_MEMORY 0x00800000
|
||
/* Instruction uses single precision floating point. */
|
||
#define FP_S 0x01000000
|
||
/* Instruction uses double precision floating point. */
|
||
#define FP_D 0x02000000
|
||
/* Instruction is part of the tx39's integer multiply family. */
|
||
#define INSN_MULT 0x04000000
|
||
/* Reads general purpose register 24. */
|
||
#define INSN_READ_GPR_24 0x08000000
|
||
/* Writes to general purpose register 24. */
|
||
#define INSN_WRITE_GPR_24 0x10000000
|
||
/* A user-defined instruction. */
|
||
#define INSN_UDI 0x20000000
|
||
/* 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
|
||
/* Instruction has a branch delay slot that requires a 16-bit instruction. */
|
||
#define INSN2_BRANCH_DELAY_16BIT 0x00000020
|
||
/* Instruction has a branch delay slot that requires a 32-bit instruction. */
|
||
#define INSN2_BRANCH_DELAY_32BIT 0x00000040
|
||
/* Writes to the stack pointer ($29). */
|
||
#define INSN2_WRITE_SP 0x00000080
|
||
/* Reads from the stack pointer ($29). */
|
||
#define INSN2_READ_SP 0x00000100
|
||
/* Reads the RA ($31) register. */
|
||
#define INSN2_READ_GPR_31 0x00000200
|
||
/* Reads the program counter ($pc). */
|
||
#define INSN2_READ_PC 0x00000400
|
||
/* Is an unconditional branch insn. */
|
||
#define INSN2_UNCOND_BRANCH 0x00000800
|
||
/* Is a conditional branch insn. */
|
||
#define INSN2_COND_BRANCH 0x00001000
|
||
/* Reads from $16. This is true of the MIPS16 0x6500 nop. */
|
||
#define INSN2_READ_GPR_16 0x00002000
|
||
/* Has an "\.x?y?z?w?" suffix based on mips_vu0_channel_mask. */
|
||
#define INSN2_VU0_CHANNEL_SUFFIX 0x00004000
|
||
/* Instruction has a forbidden slot. */
|
||
#define INSN2_FORBIDDEN_SLOT 0x00008000
|
||
|
||
/* 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 0x0000001ful
|
||
|
||
/* 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_ISA32R3 8
|
||
#define INSN_ISA32R5 9
|
||
#define INSN_ISA32R6 10
|
||
#define INSN_ISA64 11
|
||
#define INSN_ISA64R2 12
|
||
#define INSN_ISA64R3 13
|
||
#define INSN_ISA64R5 14
|
||
#define INSN_ISA64R6 15
|
||
/* 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 16
|
||
#define INSN_ISA3_32R2 17
|
||
#define INSN_ISA4_32 18
|
||
#define INSN_ISA4_32R2 19
|
||
#define INSN_ISA5_32R2 20
|
||
|
||
/* The R6 definitions shown below state that they support all previous ISAs.
|
||
This is not actually true as some instructions are removed in R6.
|
||
The problem is that the removed instructions in R6 come from different
|
||
ISAs. One approach to solve this would be to describe in the membership
|
||
field of the opcode table the different ISAs an instruction belongs to.
|
||
This would require us to create a large amount of different ISA
|
||
combinations which is hard to manage. A cleaner approach (which is
|
||
implemented here) is to say that R6 is an extension of R5 and then to
|
||
deal with the removed instructions by adding instruction exclusions
|
||
for R6 in the opcode table. */
|
||
|
||
/* Bit INSN_ISA<X> - 1 of INSN_UPTO<Y> is set if ISA Y includes ISA X. */
|
||
|
||
#define ISAF(X) (1 << (INSN_ISA##X - 1))
|
||
#define INSN_UPTO1 ISAF(1)
|
||
#define INSN_UPTO2 INSN_UPTO1 | ISAF(2)
|
||
#define INSN_UPTO3 INSN_UPTO2 | ISAF(3) | ISAF(3_32) | ISAF(3_32R2)
|
||
#define INSN_UPTO4 INSN_UPTO3 | ISAF(4) | ISAF(4_32) | ISAF(4_32R2)
|
||
#define INSN_UPTO5 INSN_UPTO4 | ISAF(5) | ISAF(5_32R2)
|
||
#define INSN_UPTO32 INSN_UPTO2 | ISAF(32) | ISAF(3_32) | ISAF(4_32)
|
||
#define INSN_UPTO32R2 INSN_UPTO32 | ISAF(32R2) \
|
||
| ISAF(3_32R2) | ISAF(4_32R2) | ISAF(5_32R2)
|
||
#define INSN_UPTO32R3 INSN_UPTO32R2 | ISAF(32R3)
|
||
#define INSN_UPTO32R5 INSN_UPTO32R3 | ISAF(32R5)
|
||
#define INSN_UPTO32R6 INSN_UPTO32R5 | ISAF(32R6)
|
||
#define INSN_UPTO64 INSN_UPTO5 | ISAF(64) | ISAF(32)
|
||
#define INSN_UPTO64R2 INSN_UPTO64 | ISAF(64R2) | ISAF(32R2)
|
||
#define INSN_UPTO64R3 INSN_UPTO64R2 | ISAF(64R3) | ISAF(32R3)
|
||
#define INSN_UPTO64R5 INSN_UPTO64R3 | ISAF(64R5) | ISAF(32R5)
|
||
#define INSN_UPTO64R6 INSN_UPTO64R5 | ISAF(64R6) | ISAF(32R6)
|
||
|
||
/* The same information in table form: bit INSN_ISA<X> - 1 of index
|
||
INSN_UPTO<Y> - 1 is set if ISA Y includes ISA X. */
|
||
static const unsigned int mips_isa_table[] = {
|
||
INSN_UPTO1,
|
||
INSN_UPTO2,
|
||
INSN_UPTO3,
|
||
INSN_UPTO4,
|
||
INSN_UPTO5,
|
||
INSN_UPTO32,
|
||
INSN_UPTO32R2,
|
||
INSN_UPTO32R3,
|
||
INSN_UPTO32R5,
|
||
INSN_UPTO32R6,
|
||
INSN_UPTO64,
|
||
INSN_UPTO64R2,
|
||
INSN_UPTO64R3,
|
||
INSN_UPTO64R5,
|
||
INSN_UPTO64R6
|
||
};
|
||
#undef ISAF
|
||
|
||
/* Masks used for Chip specific instructions. */
|
||
#define INSN_CHIP_MASK 0xc3ff4f60
|
||
|
||
/* Cavium Networks Octeon instructions. */
|
||
#define INSN_OCTEON 0x00000800
|
||
#define INSN_OCTEONP 0x00000200
|
||
#define INSN_OCTEON2 0x00000100
|
||
#define INSN_OCTEON3 0x00000040
|
||
|
||
/* MIPS R5900 instruction */
|
||
#define INSN_5900 0x00004000
|
||
|
||
/* 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
|
||
|
||
/* 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
|
||
|
||
/* DSP ASE */
|
||
#define ASE_DSP 0x00000001
|
||
#define ASE_DSP64 0x00000002
|
||
/* DSP R2 ASE */
|
||
#define ASE_DSPR2 0x00000004
|
||
/* Enhanced VA Scheme */
|
||
#define ASE_EVA 0x00000008
|
||
/* MCU (MicroController) ASE */
|
||
#define ASE_MCU 0x00000010
|
||
/* MDMX ASE */
|
||
#define ASE_MDMX 0x00000020
|
||
/* MIPS-3D ASE */
|
||
#define ASE_MIPS3D 0x00000040
|
||
/* MT ASE */
|
||
#define ASE_MT 0x00000080
|
||
/* SmartMIPS ASE */
|
||
#define ASE_SMARTMIPS 0x00000100
|
||
/* Virtualization ASE */
|
||
#define ASE_VIRT 0x00000200
|
||
#define ASE_VIRT64 0x00000400
|
||
/* MSA Extension */
|
||
#define ASE_MSA 0x00000800
|
||
#define ASE_MSA64 0x00001000
|
||
/* eXtended Physical Address (XPA) Extension. */
|
||
#define ASE_XPA 0x00002000
|
||
/* DSP R3 Module. */
|
||
#define ASE_DSPR3 0x00004000
|
||
|
||
/* 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_MIPS32R3 INSN_ISA32R3
|
||
#define ISA_MIPS32R5 INSN_ISA32R5
|
||
#define ISA_MIPS64R2 INSN_ISA64R2
|
||
#define ISA_MIPS64R3 INSN_ISA64R3
|
||
#define ISA_MIPS64R5 INSN_ISA64R5
|
||
|
||
#define ISA_MIPS32R6 INSN_ISA32R6
|
||
#define ISA_MIPS64R6 INSN_ISA64R6
|
||
|
||
/* 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_R5900 5900
|
||
#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_MIPS32R3 34
|
||
#define CPU_MIPS32R5 36
|
||
#define CPU_MIPS32R6 37
|
||
#define CPU_MIPS5 5
|
||
#define CPU_MIPS64 64
|
||
#define CPU_MIPS64R2 65
|
||
#define CPU_MIPS64R3 66
|
||
#define CPU_MIPS64R5 68
|
||
#define CPU_MIPS64R6 69
|
||
#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_OCTEONP 6601
|
||
#define CPU_OCTEON2 6502
|
||
#define CPU_OCTEON3 6503
|
||
#define CPU_XLR 887682 /* decimal 'XLR' */
|
||
|
||
/* Return true if the given CPU is included in INSN_* mask MASK. */
|
||
|
||
static inline bfd_boolean
|
||
cpu_is_member (int cpu, unsigned int mask)
|
||
{
|
||
switch (cpu)
|
||
{
|
||
case CPU_R4650:
|
||
case CPU_RM7000:
|
||
case CPU_RM9000:
|
||
return (mask & INSN_4650) != 0;
|
||
|
||
case CPU_R4010:
|
||
return (mask & INSN_4010) != 0;
|
||
|
||
case CPU_VR4100:
|
||
return (mask & INSN_4100) != 0;
|
||
|
||
case CPU_R3900:
|
||
return (mask & INSN_3900) != 0;
|
||
|
||
case CPU_R10000:
|
||
case CPU_R12000:
|
||
case CPU_R14000:
|
||
case CPU_R16000:
|
||
return (mask & INSN_10000) != 0;
|
||
|
||
case CPU_SB1:
|
||
return (mask & INSN_SB1) != 0;
|
||
|
||
case CPU_R4111:
|
||
return (mask & INSN_4111) != 0;
|
||
|
||
case CPU_VR4120:
|
||
return (mask & INSN_4120) != 0;
|
||
|
||
case CPU_VR5400:
|
||
return (mask & INSN_5400) != 0;
|
||
|
||
case CPU_VR5500:
|
||
return (mask & INSN_5500) != 0;
|
||
|
||
case CPU_R5900:
|
||
return (mask & INSN_5900) != 0;
|
||
|
||
case CPU_LOONGSON_2E:
|
||
return (mask & INSN_LOONGSON_2E) != 0;
|
||
|
||
case CPU_LOONGSON_2F:
|
||
return (mask & INSN_LOONGSON_2F) != 0;
|
||
|
||
case CPU_LOONGSON_3A:
|
||
return (mask & INSN_LOONGSON_3A) != 0;
|
||
|
||
case CPU_OCTEON:
|
||
return (mask & INSN_OCTEON) != 0;
|
||
|
||
case CPU_OCTEONP:
|
||
return (mask & INSN_OCTEONP) != 0;
|
||
|
||
case CPU_OCTEON2:
|
||
return (mask & INSN_OCTEON2) != 0;
|
||
|
||
case CPU_OCTEON3:
|
||
return (mask & INSN_OCTEON3) != 0;
|
||
|
||
case CPU_XLR:
|
||
return (mask & INSN_XLR) != 0;
|
||
|
||
case CPU_MIPS32R6:
|
||
return (mask & INSN_ISA_MASK) == INSN_ISA32R6;
|
||
|
||
case CPU_MIPS64R6:
|
||
return ((mask & INSN_ISA_MASK) == INSN_ISA32R6)
|
||
|| ((mask & INSN_ISA_MASK) == INSN_ISA64R6);
|
||
|
||
default:
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/* 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. Return true
|
||
if instruction INSN is available to the given ISA and CPU. */
|
||
|
||
static inline bfd_boolean
|
||
opcode_is_member (const struct mips_opcode *insn, int isa, int ase, int cpu)
|
||
{
|
||
if (!cpu_is_member (cpu, insn->exclusions))
|
||
{
|
||
/* Test for ISA level compatibility. */
|
||
if ((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)
|
||
return TRUE;
|
||
|
||
/* Test for ASE compatibility. */
|
||
if ((ase & insn->ase) != 0)
|
||
return TRUE;
|
||
|
||
/* Test for processor-specific extensions. */
|
||
if (cpu_is_member (cpu, insn->membership))
|
||
return TRUE;
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
/* This is a list of macro expanded instructions.
|
||
|
||
_I appended means immediate
|
||
_A appended means target address of a jump
|
||
_AB appended means address with (possibly zero) base register
|
||
_D appended means 64 bit floating point constant
|
||
_S appended means 32 bit floating point constant. */
|
||
|
||
enum
|
||
{
|
||
M_ABS,
|
||
M_ACLR_AB,
|
||
M_ADD_I,
|
||
M_ADDU_I,
|
||
M_AND_I,
|
||
M_ASET_AB,
|
||
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_CACHEE_AB,
|
||
M_DABS,
|
||
M_DADD_I,
|
||
M_DADDU_I,
|
||
M_DDIV_3,
|
||
M_DDIV_3I,
|
||
M_DDIVU_3,
|
||
M_DDIVU_3I,
|
||
M_DIV_3,
|
||
M_DIV_3I,
|
||
M_DIVU_3,
|
||
M_DIVU_3I,
|
||
M_DLA_AB,
|
||
M_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_JRADDIUSP,
|
||
M_JRC,
|
||
M_L_DAB,
|
||
M_LA_AB,
|
||
M_LB_AB,
|
||
M_LBE_AB,
|
||
M_LBU_AB,
|
||
M_LBUE_AB,
|
||
M_LCA_AB,
|
||
M_LD_AB,
|
||
M_LDC1_AB,
|
||
M_LDC2_AB,
|
||
M_LQC2_AB,
|
||
M_LDC3_AB,
|
||
M_LDL_AB,
|
||
M_LDM_AB,
|
||
M_LDP_AB,
|
||
M_LDR_AB,
|
||
M_LH_AB,
|
||
M_LHE_AB,
|
||
M_LHU_AB,
|
||
M_LHUE_AB,
|
||
M_LI,
|
||
M_LI_D,
|
||
M_LI_DD,
|
||
M_LI_S,
|
||
M_LI_SS,
|
||
M_LL_AB,
|
||
M_LLD_AB,
|
||
M_LLE_AB,
|
||
M_LQ_AB,
|
||
M_LW_AB,
|
||
M_LWE_AB,
|
||
M_LWC0_AB,
|
||
M_LWC1_AB,
|
||
M_LWC2_AB,
|
||
M_LWC3_AB,
|
||
M_LWL_AB,
|
||
M_LWLE_AB,
|
||
M_LWM_AB,
|
||
M_LWP_AB,
|
||
M_LWR_AB,
|
||
M_LWRE_AB,
|
||
M_LWU_AB,
|
||
M_MSGSND,
|
||
M_MSGLD,
|
||
M_MSGLD_T,
|
||
M_MSGWAIT,
|
||
M_MSGWAIT_T,
|
||
M_MOVE,
|
||
M_MOVEP,
|
||
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_PREFE_AB,
|
||
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_DAB,
|
||
M_S_S,
|
||
M_SAA_AB,
|
||
M_SAAD_AB,
|
||
M_SC_AB,
|
||
M_SCD_AB,
|
||
M_SCE_AB,
|
||
M_SD_AB,
|
||
M_SDC1_AB,
|
||
M_SDC2_AB,
|
||
M_SQC2_AB,
|
||
M_SDC3_AB,
|
||
M_SDL_AB,
|
||
M_SDM_AB,
|
||
M_SDP_AB,
|
||
M_SDR_AB,
|
||
M_SEQ,
|
||
M_SEQ_I,
|
||
M_SGE,
|
||
M_SGE_I,
|
||
M_SGEU,
|
||
M_SGEU_I,
|
||
M_SGT,
|
||
M_SGT_I,
|
||
M_SGTU,
|
||
M_SGTU_I,
|
||
M_SLE,
|
||
M_SLE_I,
|
||
M_SLEU,
|
||
M_SLEU_I,
|
||
M_SLT_I,
|
||
M_SLTU_I,
|
||
M_SNE,
|
||
M_SNE_I,
|
||
M_SB_AB,
|
||
M_SBE_AB,
|
||
M_SH_AB,
|
||
M_SHE_AB,
|
||
M_SQ_AB,
|
||
M_SW_AB,
|
||
M_SWE_AB,
|
||
M_SWC0_AB,
|
||
M_SWC1_AB,
|
||
M_SWC2_AB,
|
||
M_SWC3_AB,
|
||
M_SWL_AB,
|
||
M_SWLE_AB,
|
||
M_SWM_AB,
|
||
M_SWP_AB,
|
||
M_SWR_AB,
|
||
M_SWRE_AB,
|
||
M_SUB_I,
|
||
M_SUBU_I,
|
||
M_SUBU_I_2,
|
||
M_TEQ_I,
|
||
M_TGE_I,
|
||
M_TGEU_I,
|
||
M_TLT_I,
|
||
M_TLTU_I,
|
||
M_TNE_I,
|
||
M_TRUNCWD,
|
||
M_TRUNCWS,
|
||
M_ULD_AB,
|
||
M_ULH_AB,
|
||
M_ULHU_AB,
|
||
M_ULW_AB,
|
||
M_USH_AB,
|
||
M_USW_AB,
|
||
M_USD_AB,
|
||
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_operand mips_vu0_channel_mask;
|
||
extern const struct mips_operand *decode_mips_operand (const char *);
|
||
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
|
||
"i" likewise, but flips bit 0
|
||
"e" 11 bit extension value
|
||
"l" register list for entry instruction
|
||
"L" register list for exit instruction
|
||
|
||
"I" an immediate value used for macros
|
||
|
||
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_*_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)
|
||
|
||
Characters used so far, for quick reference when adding more:
|
||
" 456 8 0"
|
||
"[]<"
|
||
"ABCDE HI KLM P RS UVWXYZ"
|
||
"a e ijklm pq vwxyz"
|
||
*/
|
||
|
||
/* 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
|
||
|
||
/* 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_operand *decode_mips16_operand (char, bfd_boolean);
|
||
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_3BITPOS 0x7
|
||
#define MICROMIPSOP_SH_3BITPOS 21
|
||
#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_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
|
||
|
||
/* MIPS DSP ASE */
|
||
#define MICROMIPSOP_MASK_DSPACC 0x3
|
||
#define MICROMIPSOP_SH_DSPACC 14
|
||
#define MICROMIPSOP_MASK_DSPSFT 0x3f
|
||
#define MICROMIPSOP_SH_DSPSFT 16
|
||
#define MICROMIPSOP_MASK_SA3 0x7
|
||
#define MICROMIPSOP_SH_SA3 13
|
||
#define MICROMIPSOP_MASK_SA4 0xf
|
||
#define MICROMIPSOP_SH_SA4 12
|
||
#define MICROMIPSOP_MASK_IMM8 0xff
|
||
#define MICROMIPSOP_SH_IMM8 13
|
||
#define MICROMIPSOP_MASK_IMM10 0x3ff
|
||
#define MICROMIPSOP_SH_IMM10 16
|
||
#define MICROMIPSOP_MASK_WRDSP 0x3f
|
||
#define MICROMIPSOP_SH_WRDSP 14
|
||
#define MICROMIPSOP_MASK_BP 0x3
|
||
#define MICROMIPSOP_SH_BP 14
|
||
|
||
/* 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_S 0
|
||
#define MICROMIPSOP_SH_DSPACC_S 0
|
||
#define MICROMIPSOP_MASK_DSPSFT_7 0
|
||
#define MICROMIPSOP_SH_DSPSFT_7 0
|
||
#define MICROMIPSOP_MASK_RDDSP 0
|
||
#define MICROMIPSOP_SH_RDDSP 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
|
||
|
||
/* microMIPS Enhanced VA Scheme */
|
||
#define MICROMIPSOP_SH_EVAOFFSET 0
|
||
#define MICROMIPSOP_MASK_EVAOFFSET 0x1ff
|
||
|
||
/* 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" 3-bit MIPS register pair (MICROMIPSOP_*_MH) at bit 7
|
||
"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_*_STYPE)
|
||
"<" 5-bit shift amount (MICROMIPSOP_*_SHAMT)
|
||
">" shift amount between 32 and 63, stored after subtracting 32
|
||
(MICROMIPSOP_*_SHAMT)
|
||
"\" 3-bit position for ASET and ACLR (MICROMIPSOP_*_3BITPOS)
|
||
"|" 4-bit trap code (MICROMIPSOP_*_TRAP)
|
||
"~" 12-bit signed offset (MICROMIPSOP_*_OFFSET12)
|
||
"a" 26-bit target address (MICROMIPSOP_*_TARGET)
|
||
"+i" likewise, but flips bit 0
|
||
"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)
|
||
"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.
|
||
"+J" 10-bit SYSCALL/WAIT/SDBBP/HYPCALL function code
|
||
(MICROMIPSOP_*_CODE10)
|
||
|
||
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 source register (MICROMIPSOP_*_RS)
|
||
"H" 3-bit sel field for (D)MTC* and (D)MFC* (MICROMIPSOP_*_SEL)
|
||
|
||
Macro instructions:
|
||
"A" general 32 bit expression
|
||
"I" 32-bit immediate (value placed in imm_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
|
||
|
||
DSP ASE usage:
|
||
"2" 2-bit unsigned immediate for byte align (MICROMIPSOP_*_BP)
|
||
"3" 3-bit unsigned immediate (MICROMIPSOP_*_SA3)
|
||
"4" 4-bit unsigned immediate (MICROMIPSOP_*_SA4)
|
||
"5" 8-bit unsigned immediate (MICROMIPSOP_*_IMM8)
|
||
"6" 5-bit unsigned immediate (MICROMIPSOP_*_RS)
|
||
"7" 2-bit DSP accumulator register (MICROMIPSOP_*_DSPACC)
|
||
"8" 6-bit unsigned immediate (MICROMIPSOP_*_WRDSP)
|
||
"0" 6-bit signed immediate (MICROMIPSOP_*_DSPSFT)
|
||
"@" 10-bit signed immediate (MICROMIPSOP_*_IMM10)
|
||
"^" 5-bit unsigned immediate (MICROMIPSOP_*_RD)
|
||
|
||
microMIPS Enhanced VA Scheme:
|
||
"+j" 9-bit signed offset in bit 0 (OP_*_EVAOFFSET)
|
||
|
||
MSA Extension:
|
||
"+d" 5-bit MSA register (FD)
|
||
"+e" 5-bit MSA register (FS)
|
||
"+h" 5-bit MSA register (FT)
|
||
"+k" 5-bit GPR at bit 6
|
||
"+l" 5-bit MSA control register at bit 6
|
||
"+n" 5-bit MSA control register at bit 11
|
||
"+o" 4-bit vector element index at bit 16
|
||
"+u" 3-bit vector element index at bit 16
|
||
"+v" 2-bit vector element index at bit 16
|
||
"+w" 1-bit vector element index at bit 16
|
||
"+x" 5-bit shift amount at bit 16
|
||
"+T" (-512 .. 511) << 0 at bit 16
|
||
"+U" (-512 .. 511) << 1 at bit 16
|
||
"+V" (-512 .. 511) << 2 at bit 16
|
||
"+W" (-512 .. 511) << 3 at bit 16
|
||
"+~" 2 bit LSA/DLSA shift amount from 1 to 4 at bit 6
|
||
"+!" 3 bit unsigned bit position at bit 16
|
||
"+@" 4 bit unsigned bit position at bit 16
|
||
"+#" 6 bit unsigned bit position at bit 16
|
||
"+$" 5 bit unsigned immediate at bit 16
|
||
"+%" 5 bit signed immediate at bit 16
|
||
"+^" 10 bit signed immediate at bit 11
|
||
"+&" 0 vector element index
|
||
"+*" 5-bit register vector element index at bit 16
|
||
"+|" 8-bit mask at bit 16
|
||
|
||
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:
|
||
"12345678 0"
|
||
"<>(),+-.@\^|~"
|
||
"ABCDEFGHI KLMN RST V "
|
||
"abcd f hijklmnopqrstuvw yz"
|
||
|
||
Extension character sequences used so far ("+" followed by the
|
||
following), for quick reference when adding more:
|
||
""
|
||
"~!@#$%^&*|"
|
||
"ABCEFGHJTUVW"
|
||
"dehijklnouvwx"
|
||
|
||
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"
|
||
|
||
Extension character sequences used so far ("-" followed by the
|
||
following), for quick reference when adding more:
|
||
""
|
||
""
|
||
<none so far>
|
||
*/
|
||
|
||
extern const struct mips_operand *decode_micromips_operand (const char *);
|
||
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
|
||
|
||
#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
|
||
#endif /* _MIPS_H_ */
|