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Code Editor : cpu.go
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. // Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) // Portions Copyright © 1997-1999 Vita Nuova Limited // Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) // Portions Copyright © 2004,2006 Bruce Ellis // Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) // Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others // Portions Copyright © 2009 The Go Authors. All rights reserved. // Portions Copyright © 2019 The Go Authors. All rights reserved. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. package riscv import "cmd/internal/obj" //go:generate go run ../stringer.go -i $GOFILE -o anames.go -p riscv const ( // Base register numberings. REG_X0 = obj.RBaseRISCV + iota REG_X1 REG_X2 REG_X3 REG_X4 REG_X5 REG_X6 REG_X7 REG_X8 REG_X9 REG_X10 REG_X11 REG_X12 REG_X13 REG_X14 REG_X15 REG_X16 REG_X17 REG_X18 REG_X19 REG_X20 REG_X21 REG_X22 REG_X23 REG_X24 REG_X25 REG_X26 REG_X27 REG_X28 REG_X29 REG_X30 REG_X31 // FP register numberings. REG_F0 REG_F1 REG_F2 REG_F3 REG_F4 REG_F5 REG_F6 REG_F7 REG_F8 REG_F9 REG_F10 REG_F11 REG_F12 REG_F13 REG_F14 REG_F15 REG_F16 REG_F17 REG_F18 REG_F19 REG_F20 REG_F21 REG_F22 REG_F23 REG_F24 REG_F25 REG_F26 REG_F27 REG_F28 REG_F29 REG_F30 REG_F31 // This marks the end of the register numbering. REG_END // General registers reassigned to ABI names. REG_ZERO = REG_X0 REG_RA = REG_X1 REG_SP = REG_X2 REG_GP = REG_X3 // aka REG_SB REG_TP = REG_X4 // aka REG_G REG_T0 = REG_X5 REG_T1 = REG_X6 REG_T2 = REG_X7 REG_S0 = REG_X8 REG_S1 = REG_X9 REG_A0 = REG_X10 REG_A1 = REG_X11 REG_A2 = REG_X12 REG_A3 = REG_X13 REG_A4 = REG_X14 REG_A5 = REG_X15 REG_A6 = REG_X16 REG_A7 = REG_X17 REG_S2 = REG_X18 REG_S3 = REG_X19 REG_S4 = REG_X20 REG_S5 = REG_X21 REG_S6 = REG_X22 REG_S7 = REG_X23 REG_S8 = REG_X24 REG_S9 = REG_X25 REG_S10 = REG_X26 REG_S11 = REG_X27 REG_T3 = REG_X28 REG_T4 = REG_X29 REG_T5 = REG_X30 REG_T6 = REG_X31 // Go runtime register names. REG_G = REG_TP // G pointer. REG_CTXT = REG_S4 // Context for closures. REG_LR = REG_RA // Link register. REG_TMP = REG_T6 // Reserved for assembler use. // ABI names for floating point registers. REG_FT0 = REG_F0 REG_FT1 = REG_F1 REG_FT2 = REG_F2 REG_FT3 = REG_F3 REG_FT4 = REG_F4 REG_FT5 = REG_F5 REG_FT6 = REG_F6 REG_FT7 = REG_F7 REG_FS0 = REG_F8 REG_FS1 = REG_F9 REG_FA0 = REG_F10 REG_FA1 = REG_F11 REG_FA2 = REG_F12 REG_FA3 = REG_F13 REG_FA4 = REG_F14 REG_FA5 = REG_F15 REG_FA6 = REG_F16 REG_FA7 = REG_F17 REG_FS2 = REG_F18 REG_FS3 = REG_F19 REG_FS4 = REG_F20 REG_FS5 = REG_F21 REG_FS6 = REG_F22 REG_FS7 = REG_F23 REG_FS8 = REG_F24 REG_FS9 = REG_F25 REG_FS10 = REG_F26 REG_FS11 = REG_F27 REG_FT8 = REG_F28 REG_FT9 = REG_F29 REG_FT10 = REG_F30 REG_FT11 = REG_F31 // Names generated by the SSA compiler. REGSP = REG_SP REGG = REG_G ) // https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#dwarf-register-numbers var RISCV64DWARFRegisters = map[int16]int16{ // Integer Registers. REG_X0: 0, REG_X1: 1, REG_X2: 2, REG_X3: 3, REG_X4: 4, REG_X5: 5, REG_X6: 6, REG_X7: 7, REG_X8: 8, REG_X9: 9, REG_X10: 10, REG_X11: 11, REG_X12: 12, REG_X13: 13, REG_X14: 14, REG_X15: 15, REG_X16: 16, REG_X17: 17, REG_X18: 18, REG_X19: 19, REG_X20: 20, REG_X21: 21, REG_X22: 22, REG_X23: 23, REG_X24: 24, REG_X25: 25, REG_X26: 26, REG_X27: 27, REG_X28: 28, REG_X29: 29, REG_X30: 30, REG_X31: 31, // Floating-Point Registers. REG_F0: 32, REG_F1: 33, REG_F2: 34, REG_F3: 35, REG_F4: 36, REG_F5: 37, REG_F6: 38, REG_F7: 39, REG_F8: 40, REG_F9: 41, REG_F10: 42, REG_F11: 43, REG_F12: 44, REG_F13: 45, REG_F14: 46, REG_F15: 47, REG_F16: 48, REG_F17: 49, REG_F18: 50, REG_F19: 51, REG_F20: 52, REG_F21: 53, REG_F22: 54, REG_F23: 55, REG_F24: 56, REG_F25: 57, REG_F26: 58, REG_F27: 59, REG_F28: 60, REG_F29: 61, REG_F30: 62, REG_F31: 63, } // Prog.Mark flags. const ( // NEED_PCREL_ITYPE_RELOC is set on AUIPC instructions to indicate that // it is the first instruction in an AUIPC + I-type pair that needs a // R_RISCV_PCREL_ITYPE relocation. NEED_PCREL_ITYPE_RELOC = 1 << 0 // NEED_PCREL_STYPE_RELOC is set on AUIPC instructions to indicate that // it is the first instruction in an AUIPC + S-type pair that needs a // R_RISCV_PCREL_STYPE relocation. NEED_PCREL_STYPE_RELOC = 1 << 1 ) // RISC-V mnemonics, as defined in the "opcodes" and "opcodes-pseudo" files // from: // // https://github.com/riscv/riscv-opcodes // // As well as some pseudo-mnemonics (e.g. MOV) used only in the assembler. // // See also "The RISC-V Instruction Set Manual" at: // // https://riscv.org/specifications/ // // If you modify this table, you MUST run 'go generate' to regenerate anames.go! const ( // Unprivileged ISA (Document Version 20190608-Base-Ratified) // 2.4: Integer Computational Instructions AADDI = obj.ABaseRISCV + obj.A_ARCHSPECIFIC + iota ASLTI ASLTIU AANDI AORI AXORI ASLLI ASRLI ASRAI ALUI AAUIPC AADD ASLT ASLTU AAND AOR AXOR ASLL ASRL ASUB ASRA // The SLL/SRL/SRA instructions differ slightly between RV32 and RV64, // hence there are pseudo-opcodes for the RV32 specific versions. ASLLIRV32 ASRLIRV32 ASRAIRV32 // 2.5: Control Transfer Instructions AJAL AJALR ABEQ ABNE ABLT ABLTU ABGE ABGEU // 2.6: Load and Store Instructions ALW ALWU ALH ALHU ALB ALBU ASW ASH ASB // 2.7: Memory Ordering Instructions AFENCE AFENCEI AFENCETSO // 5.2: Integer Computational Instructions (RV64I) AADDIW ASLLIW ASRLIW ASRAIW AADDW ASLLW ASRLW ASUBW ASRAW // 5.3: Load and Store Instructions (RV64I) ALD ASD // 7.1: Multiplication Operations AMUL AMULH AMULHU AMULHSU AMULW ADIV ADIVU AREM AREMU ADIVW ADIVUW AREMW AREMUW // 8.2: Load-Reserved/Store-Conditional Instructions ALRD ASCD ALRW ASCW // 8.3: Atomic Memory Operations AAMOSWAPD AAMOADDD AAMOANDD AAMOORD AAMOXORD AAMOMAXD AAMOMAXUD AAMOMIND AAMOMINUD AAMOSWAPW AAMOADDW AAMOANDW AAMOORW AAMOXORW AAMOMAXW AAMOMAXUW AAMOMINW AAMOMINUW // 10.1: Base Counters and Timers ARDCYCLE ARDCYCLEH ARDTIME ARDTIMEH ARDINSTRET ARDINSTRETH // 11.2: Floating-Point Control and Status Register AFRCSR AFSCSR AFRRM AFSRM AFRFLAGS AFSFLAGS AFSRMI AFSFLAGSI // 11.5: Single-Precision Load and Store Instructions AFLW AFSW // 11.6: Single-Precision Floating-Point Computational Instructions AFADDS AFSUBS AFMULS AFDIVS AFMINS AFMAXS AFSQRTS AFMADDS AFMSUBS AFNMADDS AFNMSUBS // 11.7: Single-Precision Floating-Point Conversion and Move Instructions AFCVTWS AFCVTLS AFCVTSW AFCVTSL AFCVTWUS AFCVTLUS AFCVTSWU AFCVTSLU AFSGNJS AFSGNJNS AFSGNJXS AFMVXS AFMVSX AFMVXW AFMVWX // 11.8: Single-Precision Floating-Point Compare Instructions AFEQS AFLTS AFLES // 11.9: Single-Precision Floating-Point Classify Instruction AFCLASSS // 12.3: Double-Precision Load and Store Instructions AFLD AFSD // 12.4: Double-Precision Floating-Point Computational Instructions AFADDD AFSUBD AFMULD AFDIVD AFMIND AFMAXD AFSQRTD AFMADDD AFMSUBD AFNMADDD AFNMSUBD // 12.5: Double-Precision Floating-Point Conversion and Move Instructions AFCVTWD AFCVTLD AFCVTDW AFCVTDL AFCVTWUD AFCVTLUD AFCVTDWU AFCVTDLU AFCVTSD AFCVTDS AFSGNJD AFSGNJND AFSGNJXD AFMVXD AFMVDX // 12.6: Double-Precision Floating-Point Compare Instructions AFEQD AFLTD AFLED // 12.7: Double-Precision Floating-Point Classify Instruction AFCLASSD // 13.1 Quad-Precision Load and Store Instructions AFLQ AFSQ // 13.2: Quad-Precision Computational Instructions AFADDQ AFSUBQ AFMULQ AFDIVQ AFMINQ AFMAXQ AFSQRTQ AFMADDQ AFMSUBQ AFNMADDQ AFNMSUBQ // 13.3 Quad-Precision Convert and Move Instructions AFCVTWQ AFCVTLQ AFCVTSQ AFCVTDQ AFCVTQW AFCVTQL AFCVTQS AFCVTQD AFCVTWUQ AFCVTLUQ AFCVTQWU AFCVTQLU AFSGNJQ AFSGNJNQ AFSGNJXQ AFMVXQ AFMVQX // 13.4 Quad-Precision Floating-Point Compare Instructions AFEQQ AFLEQ AFLTQ // 13.5 Quad-Precision Floating-Point Classify Instruction AFCLASSQ // Privileged ISA (Version 20190608-Priv-MSU-Ratified) // 3.1.9: Instructions to Access CSRs ACSRRW ACSRRS ACSRRC ACSRRWI ACSRRSI ACSRRCI // 3.2.1: Environment Call and Breakpoint AECALL ASCALL AEBREAK ASBREAK // 3.2.2: Trap-Return Instructions AMRET ASRET AURET ADRET // 3.2.3: Wait for Interrupt AWFI // 4.2.1: Supervisor Memory-Management Fence Instruction ASFENCEVMA // Hypervisor Memory-Management Instructions AHFENCEGVMA AHFENCEVVMA // The escape hatch. Inserts a single 32-bit word. AWORD // Pseudo-instructions. These get translated by the assembler into other // instructions, based on their operands. AFNEGD AFNEGS AFNED AFNES AMOV AMOVB AMOVBU AMOVF AMOVD AMOVH AMOVHU AMOVW AMOVWU ASEQZ ASNEZ // End marker ALAST ) // All unary instructions which write to their arguments (as opposed to reading // from them) go here. The assembly parser uses this information to populate // its AST in a semantically reasonable way. // // Any instructions not listed here are assumed to either be non-unary or to read // from its argument. var unaryDst = map[obj.As]bool{ ARDCYCLE: true, ARDCYCLEH: true, ARDTIME: true, ARDTIMEH: true, ARDINSTRET: true, ARDINSTRETH: true, } // Instruction encoding masks. const ( // ITypeImmMask is a mask including only the immediate portion of // I-type instructions. ITypeImmMask = 0xfff00000 // STypeImmMask is a mask including only the immediate portion of // S-type instructions. STypeImmMask = 0xfe000f80 // UTypeImmMask is a mask including only the immediate portion of // U-type instructions. UTypeImmMask = 0xfffff000 // UJTypeImmMask is a mask including only the immediate portion of // UJ-type instructions. UJTypeImmMask = UTypeImmMask )
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