File riscv.h

File List > include > simtix > riscv.h

#pragma once

#include <stdint.h>

namespace simtix {

namespace riscv {

enum CSR : uint16_t {
  // clang-format off
  // RISCV CSRs
  MCYCLE        = 0xb00,
  MINSTRET      = 0xb02,
  MEPC          = 0x341,
  MCAUSE        = 0x342,
  MTVAL         = 0x343,
  MVENDORID     = 0xf11,
  MARCHID       = 0xf12,
  MHARTID       = 0xf14,
  HPMCOUNTER3   = 0xc03,

  // Custom CSRs
  // Per-core
  XCID          = 0xfc0,
  XNW           = 0xfc1,
  XCLGSX        = 0xfc2,
  XCLGSY        = 0xfc3,
  XCLGSZ        = 0xfc4,
  XCLGOFFX      = 0xfc5,
  XCLGOFFY      = 0xfc6,
  XCLGOFFZ      = 0xfc7,
  XCLSX         = 0xfc8,
  XCLSY         = 0xfc9,
  XCLSZ         = 0xfca,
  XCLWX         = 0xfcb,
  XCLWY         = 0xfcc,
  XCLWZ         = 0xfcd,
  XDIM          = 0xfce,
  XMHARTIDBASE  = 0xfcf,
  // Per-warp
  XWID          = 0xfd0,
  XNT           = 0xfd1,
  // Per-thread
  XTID          = 0xfe0,
  XTSTATUS      = 0xfe1,
  XCLLX         = 0xfe2,
  XCLLY         = 0xfe3,
  XCLLZ         = 0xfe4,
  XKERNELPC     = 0xfe5,
  XKERNELARG    = 0xfe7,
  // clang-format on
};

// Floating point rounding mode
enum ROUNDING_MODE : uint8_t {
  RNE = 0b000,  // Round to nearest, ties to even
  RTZ = 0b001,  // round towards zero
  RDN = 0b010,  // round down
  RUP = 0b011,  // round up
  RMM = 0b100,  // round to nearest, ties to max
  DYN = 0b111   // encoded in instruction `rm` field
};

// Exception Codes
enum Exceptions : uint32_t {
  // clang-format off
  INSTRUCTION_ADDR_MISALIGNED = 0,
  INSTRUCTION_ACCESS_FAULT    = 1,
  ILLEGAL_INSTRUCTION         = 2,
  BREAKPOINT                  = 3,
  LOAD_ADDR_MISALIGNED        = 4,
  LOAD_ACCESS_FAULT           = 5,
  STORE_ADDR_MISALIGNED       = 6,
  STORE_ACCESS_FAULT          = 7,
  ECALL                       = 11
  // clang-format on
};

enum FPExceptions : uint8_t {
  NX = 1,  // Inexact
  UF = 2,  // Underflow
  OF = 4,  // Overflow
  DZ = 8,  // Divide by zero
  NV = 16  // Invalid operation
};

enum RISCV_CONFIG : uint32_t { XLEN = 64 };

inline const char *X_ABI_NAMES[] = {
    "zero", "ra", "sp", "gp", "tp",  "t0",  "t1", "t2", "s0", "s1", "a0",
    "a1",   "a2", "a3", "a4", "a5",  "a6",  "a7", "s2", "s3", "s4", "s5",
    "s6",   "s7", "s8", "s9", "s10", "s11", "t3", "t4", "t5", "t6"};

inline const char *F_ABI_NAMES[] = {
    "ft0", "ft1", "ft2",  "ft3",  "ft4", "ft5", "ft6",  "ft7",
    "fs0", "fs1", "fa0",  "fa1",  "fa2", "fa3", "fa4",  "fa5",
    "fa6", "fa7", "fs2",  "fs3",  "fs4", "fs5", "fs6",  "fs7",
    "fs8", "fs9", "fs10", "fs11", "ft8", "ft9", "ft10", "ft11"};

inline const char *RND_NAMES[] = {"rne", "rtz", "rdn", "rup", "rmm"};
}  // namespace riscv
}  // namespace simtix