| //===- RISCVSystemOperands.td ------------------------------*- tablegen -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the symbolic operands permitted for various kinds of |
| // RISC-V system instruction. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| include "llvm/TableGen/SearchableTable.td" |
| |
| //===----------------------------------------------------------------------===// |
| // CSR (control and status register read/write) instruction options. |
| //===----------------------------------------------------------------------===// |
| |
| class SysReg<string name, bits<12> op> { |
| string Name = name; |
| // A maximum of one alias is supported right now. |
| string AltName = name; |
| // A maximum of one deprecated name is supported right now. Unlike the |
| // `AltName` alias, a `DeprecatedName` generates a diagnostic when the name is |
| // used to encourage software to migrate away from the name. |
| string DeprecatedName = ""; |
| bits<12> Encoding = op; |
| // FIXME: add these additional fields when needed. |
| // Privilege Access: Read and Write = 0, 1, 2; Read-Only = 3. |
| // Privilege Mode: User = 0, System = 1 or Machine = 3. |
| // bits<2> ReadWrite = op{11 - 10}; |
| // bits<2> XMode = op{9 - 8}; |
| // Check Extra field name and what bits 7-6 correspond to. |
| // bits<2> Extra = op{7 - 6}; |
| // Register number without the privilege bits. |
| // bits<6> Number = op{5 - 0}; |
| code FeaturesRequired = [{ {} }]; |
| bit isRV32Only = 0; |
| } |
| |
| def SysRegsList : GenericTable { |
| let FilterClass = "SysReg"; |
| // FIXME: add "ReadWrite", "Mode", "Extra", "Number" fields when needed. |
| let Fields = [ |
| "Name", "AltName", "DeprecatedName", "Encoding", "FeaturesRequired", |
| "isRV32Only", |
| ]; |
| |
| let PrimaryKey = [ "Encoding" ]; |
| let PrimaryKeyName = "lookupSysRegByEncoding"; |
| } |
| |
| def lookupSysRegByName : SearchIndex { |
| let Table = SysRegsList; |
| let Key = [ "Name" ]; |
| } |
| |
| def lookupSysRegByAltName : SearchIndex { |
| let Table = SysRegsList; |
| let Key = [ "AltName" ]; |
| } |
| |
| def lookupSysRegByDeprecatedName : SearchIndex { |
| let Table = SysRegsList; |
| let Key = [ "DeprecatedName" ]; |
| } |
| |
| // The following CSR encodings match those given in Tables 2.2, |
| // 2.3, 2.4 and 2.5 in the RISC-V Instruction Set Manual |
| // Volume II: Privileged Architecture. |
| |
| //===----------------------------------------------------------------------===// |
| // User Trap Setup |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"ustatus", 0x000>; |
| def : SysReg<"uie", 0x004>; |
| def : SysReg<"utvec", 0x005>; |
| |
| //===----------------------------------------------------------------------===// |
| // User Trap Handling |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"uscratch", 0x040>; |
| def : SysReg<"uepc", 0x041>; |
| def : SysReg<"ucause", 0x042>; |
| let DeprecatedName = "ubadaddr" in |
| def : SysReg<"utval", 0x043>; |
| def : SysReg<"uip", 0x044>; |
| |
| //===----------------------------------------------------------------------===// |
| // User Floating-Point CSRs |
| //===----------------------------------------------------------------------===// |
| |
| def SysRegFFLAGS : SysReg<"fflags", 0x001>; |
| def SysRegFRM : SysReg<"frm", 0x002>; |
| def SysRegFCSR : SysReg<"fcsr", 0x003>; |
| |
| //===----------------------------------------------------------------------===// |
| // User Counter/Timers |
| //===----------------------------------------------------------------------===// |
| def CYCLE : SysReg<"cycle", 0xC00>; |
| def TIME : SysReg<"time", 0xC01>; |
| def INSTRET : SysReg<"instret", 0xC02>; |
| |
| // hpmcounter3-hpmcounter31 at 0xC03-0xC1F. |
| foreach i = 3...31 in |
| def : SysReg<"hpmcounter"#i, !add(0xC03, !sub(i, 3))>; |
| |
| let isRV32Only = 1 in { |
| def CYCLEH : SysReg<"cycleh", 0xC80>; |
| def TIMEH : SysReg<"timeh", 0xC81>; |
| def INSTRETH : SysReg<"instreth", 0xC82>; |
| |
| // hpmcounter3h-hpmcounter31h at 0xC83-0xC9F. |
| foreach i = 3...31 in |
| def : SysReg<"hpmcounter"#i#"h", !add(0xC83, !sub(i, 3))>; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Supervisor Trap Setup |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"sstatus", 0x100>; |
| def : SysReg<"sedeleg", 0x102>; |
| def : SysReg<"sideleg", 0x103>; |
| def : SysReg<"sie", 0x104>; |
| def : SysReg<"stvec", 0x105>; |
| def : SysReg<"scounteren", 0x106>; |
| def : SysReg<"stimecmp", 0x14D>; |
| let isRV32Only = 1 in |
| def : SysReg<"stimecmph", 0x15D>; |
| |
| //===----------------------------------------------------------------------===// |
| // Supervisor Configuration |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"senvcfg", 0x10A>; |
| |
| //===----------------------------------------------------------------------===// |
| // Supervisor Trap Handling |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"sscratch", 0x140>; |
| def : SysReg<"sepc", 0x141>; |
| def : SysReg<"scause", 0x142>; |
| let DeprecatedName = "sbadaddr" in |
| def : SysReg<"stval", 0x143>; |
| def : SysReg<"sip", 0x144>; |
| |
| //===----------------------------------------------------------------------===// |
| // Supervisor Protection and Translation |
| //===----------------------------------------------------------------------===// |
| let DeprecatedName = "sptbr" in |
| def : SysReg<"satp", 0x180>; |
| |
| //===----------------------------------------------------------------------===// |
| // Debug/Trace Registers |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"scontext", 0x5A8>; |
| |
| //===----------------------------------------------------------------------===// |
| // Supervisor Count Overflow (defined in Sscofpmf) |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"scountovf", 0xDA0>; |
| |
| //===----------------------------------------------------------------------===// |
| // Hypervisor Trap Setup |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"hstatus", 0x600>; |
| def : SysReg<"hedeleg", 0x602>; |
| def : SysReg<"hideleg", 0x603>; |
| def : SysReg<"hie", 0x604>; |
| def : SysReg<"hcounteren", 0x606>; |
| def : SysReg<"hgeie", 0x607>; |
| |
| //===----------------------------------------------------------------------===// |
| // Hypervisor Trap Handling |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"htval", 0x643>; |
| def : SysReg<"hip", 0x644>; |
| def : SysReg<"hvip", 0x645>; |
| def : SysReg<"htinst", 0x64A>; |
| def : SysReg<"hgeip", 0xE12>; |
| |
| //===----------------------------------------------------------------------===// |
| // Hypervisor Configuration |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"henvcfg", 0x60A>; |
| let isRV32Only = 1 in |
| def : SysReg<"henvcfgh", 0x61A>; |
| |
| //===----------------------------------------------------------------------===// |
| // Hypervisor Protection and Translation |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"hgatp", 0x680>; |
| |
| //===----------------------------------------------------------------------===// |
| // Debug/Trace Registers |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"hcontext", 0x6A8>; |
| |
| //===----------------------------------------------------------------------===// |
| // Hypervisor Counter/Timer Virtualization Registers |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"htimedelta", 0x605>; |
| let isRV32Only = 1 in |
| def : SysReg<"htimedeltah", 0x615>; |
| |
| //===----------------------------------------------------------------------===// |
| // Virtual Supervisor Registers |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"vsstatus", 0x200>; |
| def : SysReg<"vsie", 0x204>; |
| def : SysReg<"vstvec", 0x205>; |
| def : SysReg<"vsscratch", 0x240>; |
| def : SysReg<"vsepc", 0x241>; |
| def : SysReg<"vscause", 0x242>; |
| def : SysReg<"vstval", 0x243>; |
| def : SysReg<"vsip", 0x244>; |
| def : SysReg<"vstimecmp", 0x24D>; |
| let isRV32Only = 1 in |
| def : SysReg<"vstimecmph", 0x25D>; |
| def : SysReg<"vsatp", 0x280>; |
| |
| //===----------------------------------------------------------------------===// |
| // Machine Information Registers |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"mvendorid", 0xF11>; |
| def : SysReg<"marchid", 0xF12>; |
| def : SysReg<"mimpid", 0xF13>; |
| def : SysReg<"mhartid", 0xF14>; |
| def : SysReg<"mconfigptr", 0xF15>; |
| |
| //===----------------------------------------------------------------------===// |
| // Machine Trap Setup |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"mstatus", 0x300>; |
| def : SysReg<"misa", 0x301>; |
| def : SysReg<"medeleg", 0x302>; |
| def : SysReg<"mideleg", 0x303>; |
| def : SysReg<"mie", 0x304>; |
| def : SysReg<"mtvec", 0x305>; |
| def : SysReg<"mcounteren", 0x306>; |
| let isRV32Only = 1 in |
| def : SysReg<"mstatush", 0x310>; |
| |
| //===----------------------------------------------------------------------===// |
| // Machine Trap Handling |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"mscratch", 0x340>; |
| def : SysReg<"mepc", 0x341>; |
| def : SysReg<"mcause", 0x342>; |
| let DeprecatedName = "mbadaddr" in |
| def : SysReg<"mtval", 0x343>; |
| def : SysReg<"mip", 0x344>; |
| def : SysReg<"mtinst", 0x34A>; |
| def : SysReg<"mtval2", 0x34B>; |
| |
| //===----------------------------------------------------------------------===// |
| // Machine Configuration |
| //===----------------------------------------------------------------------===// |
| |
| def : SysReg<"menvcfg", 0x30A>; |
| let isRV32Only = 1 in |
| def : SysReg<"menvcfgh", 0x31A>; |
| def : SysReg<"mseccfg", 0x747>; |
| let isRV32Only = 1 in |
| def : SysReg<"mseccfgh", 0x757>; |
| |
| //===----------------------------------------------------------------------===// |
| // Machine Protection and Translation |
| //===----------------------------------------------------------------------===// |
| |
| // pmpcfg0-pmpcfg15 at 0x3A0-0x3AF. Odd-numbered registers are RV32-only. |
| foreach i = 0...15 in { |
| let isRV32Only = !and(i, 1) in |
| def : SysReg<"pmpcfg"#i, !add(0x3A0, i)>; |
| } |
| |
| // pmpaddr0-pmpaddr63 at 0x3B0-0x3EF. |
| foreach i = 0...63 in |
| def : SysReg<"pmpaddr"#i, !add(0x3B0, i)>; |
| |
| //===----------------------------------------------------------------------===// |
| // Machine Counter and Timers |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"mcycle", 0xB00>; |
| def : SysReg<"minstret", 0xB02>; |
| |
| // mhpmcounter3-mhpmcounter31 at 0xB03-0xB1F. |
| foreach i = 3...31 in |
| def : SysReg<"mhpmcounter"#i, !add(0xB03, !sub(i, 3))>; |
| |
| let isRV32Only = 1 in { |
| def: SysReg<"mcycleh", 0xB80>; |
| def: SysReg<"minstreth", 0xB82>; |
| |
| // mhpmcounter3h-mhpmcounter31h at 0xB83-0xB9F. |
| foreach i = 3...31 in |
| def : SysReg<"mhpmcounter"#i#"h", !add(0xB83, !sub(i, 3))>; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Machine Counter Setup |
| //===----------------------------------------------------------------------===// |
| let AltName = "mucounteren" in // Privileged spec v1.9.1 Name |
| def : SysReg<"mcountinhibit", 0x320>; |
| |
| // mhpmevent3-mhpmevent31 at 0x323-0x33F. |
| foreach i = 3...31 in |
| def : SysReg<"mhpmevent"#i, !add(0x323, !sub(i, 3))>; |
| |
| // mhpmevent3h-mhpmevent31h at 0x723-0x73F |
| foreach i = 3...31 in { |
| let isRV32Only = 1 in |
| def : SysReg<"mhpmevent"#i#"h", !add(0x723, !sub(i, 3))>; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Debug/ Trace Registers (shared with Debug Mode) |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"tselect", 0x7A0>; |
| def : SysReg<"tdata1", 0x7A1>; |
| def : SysReg<"tdata2", 0x7A2>; |
| def : SysReg<"tdata3", 0x7A3>; |
| def : SysReg<"mcontext", 0x7A8>; |
| |
| //===----------------------------------------------------------------------===// |
| // Debug Mode Registers |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"dcsr", 0x7B0>; |
| def : SysReg<"dpc", 0x7B1>; |
| |
| // "dscratch" is an alternative name for "dscratch0" which appeared in earlier |
| // drafts of the RISC-V debug spec |
| let AltName = "dscratch" in |
| def : SysReg<"dscratch0", 0x7B2>; |
| def : SysReg<"dscratch1", 0x7B3>; |
| |
| //===----------------------------------------------------------------------===// |
| // User Vector CSRs |
| //===----------------------------------------------------------------------===// |
| def : SysReg<"vstart", 0x008>; |
| def : SysReg<"vxsat", 0x009>; |
| def : SysReg<"vxrm", 0x00A>; |
| def : SysReg<"vcsr", 0x00F>; |
| def : SysReg<"vl", 0xC20>; |
| def : SysReg<"vtype", 0xC21>; |
| def SysRegVLENB: SysReg<"vlenb", 0xC22>; |
| |
| //===----------------------------------------------------------------------===// |
| // State Enable Extension (Smstateen) |
| //===----------------------------------------------------------------------===// |
| |
| // sstateen0-sstateen3 at 0x10C-0x10F, mstateen0-mstateen3 at 0x30C-0x30F, |
| // mstateen0h-mstateen3h at 0x31C-0x31F, hstateen0-hstateen3 at 0x60C-0x60F, |
| // and hstateen0h-hstateen3h at 0x61C-0x61F. |
| foreach i = 0...3 in { |
| def : SysReg<"sstateen"#i, !add(0x10C, i)>; |
| def : SysReg<"mstateen"#i, !add(0x30C, i)>; |
| let isRV32Only = 1 in |
| def : SysReg<"mstateen"#i#"h", !add(0x31C, i)>; |
| def : SysReg<"hstateen"#i, !add(0x60C, i)>; |
| let isRV32Only = 1 in |
| def : SysReg<"hstateen"#i#"h", !add(0x61C, i)>; |
| } |
| |
| //===----------------------------------------------- |
| // Entropy Source CSR |
| //===----------------------------------------------- |
| |
| def SEED : SysReg<"seed", 0x015>; |
