src/soc/decoder/power_enums.py

   1 from enum import Enum, unique
   2 import csv
   3 import os
   4 import requests
   5
   6
   7 def get_csv(name):
   8     file_dir = os.path.dirname(os.path.realpath(__file__))
   9     file_path = os.path.join(file_dir, name)
  10     if not os.path.isfile(file_path):
  11         url = 'https://libre-riscv.org/openpower/isatables/' + name
  12         r = requests.get(url, allow_redirects=True)
  13         with open(file_path, 'w') as outfile:
  14             outfile.write(r.content.decode("utf-8"))
  15     with open(file_path, 'r') as csvfile:
  16         reader = csv.DictReader(csvfile)
  17         return list(reader)
  18
  19
  20 # names of the fields in the tables that don't correspond to an enum
  21 single_bit_flags = ['CR in', 'CR out', 'inv A', 'inv out',
  22                     'cry out', 'BR', 'sgn ext', 'upd', 'rsrv', '32b',
  23                     'sgn', 'lk', 'sgl pipe']
  24
  25 # default values for fields in the table
  26 default_values = {'unit': "NONE", 'internal op': "OP_ILLEGAL",
  27                    'in1': "RA", 'in2': 'NONE', 'in3': 'NONE', 'out': 'NONE',
  28                    'ldst len': 'NONE',
  29                    'rc' : 'NONE', 'cry in' : 'ZERO', 'form': 'NONE'}
  30
  31 def get_signal_name(name):
  32     if name[0].isdigit():
  33         name = "is_" + name
  34     return name.lower().replace(' ', '_')
  35
  36
  37 @unique
  38 class Function(Enum):
  39     NONE = 0
  40     ALU = 1
  41     LDST = 2
  42
  43
  44 @unique
  45 class Form(Enum):
  46     NONE = 0
  47     I = 1
  48     B = 2
  49     SC = 3
  50     D = 4
  51     DS = 5
  52     DQ = 6
  53     DX = 7
  54     X = 8
  55     XL = 9
  56     XFX = 10
  57     XFL = 11
  58     XX1 = 12
  59     XX2 = 13
  60     XX3 = 14
  61     XX4 = 15
  62     XS = 16
  63     XO = 17
  64     A = 18
  65     M = 19
  66     MD = 20
  67     MDS = 21
  68     VA = 22
  69     VC = 23
  70     VX = 24
  71     EVX = 25
  72     EVS = 26
  73     Z22 = 27
  74     Z23 = 28
  75
  76
  77
  78 @unique
  79 class InternalOp(Enum):
  80     OP_ILLEGAL = 0
  81     OP_NOP = 1
  82     OP_ADD = 2
  83     OP_ADDPCIS = 3
  84     OP_AND = 4
  85     OP_ATTN = 5
  86     OP_B = 6
  87     OP_BC = 7
  88     OP_BCREG = 8
  89     OP_BPERM = 9
  90     OP_CMP = 10
  91     OP_CMPB = 11
  92     OP_CMPEQB = 12
  93     OP_CMPRB = 13
  94     OP_CNTZ = 14
  95     OP_CRAND = 15
  96     OP_CRANDC = 16
  97     OP_CREQV = 17
  98     OP_CRNAND = 18
  99     OP_CRNOR = 19
 100     OP_CROR = 20
 101     OP_CRORC = 21
 102     OP_CRXOR = 22
 103     OP_DARN = 23
 104     OP_DCBF = 24
 105     OP_DCBST = 25
 106     OP_DCBT = 26
 107     OP_DCBTST = 27
 108     OP_DCBZ = 28
 109     OP_DIV = 29
 110     OP_DIVE = 30
 111     OP_EXTS = 31
 112     OP_EXTSWSLI = 32
 113     OP_ICBI = 33
 114     OP_ICBT = 34
 115     OP_ISEL = 35
 116     OP_ISYNC = 36
 117     OP_LOAD = 37
 118     OP_STORE = 38
 119     OP_MADDHD = 39
 120     OP_MADDHDU = 40
 121     OP_MADDLD = 41
 122     OP_MCRF = 42
 123     OP_MCRXR = 43
 124     OP_MCRXRX = 44
 125     OP_MFCR = 45
 126     OP_MFSPR = 46
 127     OP_MOD = 47
 128     OP_MTCRF = 48
 129     OP_MTSPR = 49
 130     OP_MUL_L64 = 50
 131     OP_MUL_H64 = 51
 132     OP_MUL_H32 = 52
 133     OP_OR = 53
 134     OP_POPCNT = 54
 135     OP_PRTY = 55
 136     OP_RLC = 56
 137     OP_RLCL = 57
 138     OP_RLCR = 58
 139     OP_SETB = 59
 140     OP_SHL = 60
 141     OP_SHR = 61
 142     OP_SYNC = 62
 143     OP_TD = 63
 144     OP_TDI = 64
 145     OP_TW = 65
 146     OP_TWI = 66
 147     OP_XOR = 67
 148     OP_SIM_CONFIG = 68
 149
 150
 151 @unique
 152 class In1Sel(Enum):
 153     RA = 0
 154     RA_OR_ZERO = 1
 155     NONE = 2
 156     SPR = 3
 157
 158
 159 @unique
 160 class In2Sel(Enum):
 161     NONE = 0
 162     RB = 1
 163     CONST_UI = 2
 164     CONST_SI = 3
 165     CONST_UI_HI = 4
 166     CONST_SI_HI = 5
 167     CONST_LI = 6
 168     CONST_BD = 7
 169     CONST_DS = 8
 170     CONST_M1 = 9
 171     CONST_SH = 10
 172     CONST_SH32 = 11
 173     SPR = 12
 174
 175
 176 @unique
 177 class In3Sel(Enum):
 178     NONE = 0
 179     RS = 1
 180
 181
 182 @unique
 183 class OutSel(Enum):
 184     NONE = 0
 185     RT = 1
 186     RA = 2
 187     SPR = 3
 188
 189
 190 @unique
 191 class LdstLen(Enum):
 192     NONE = 0
 193     is1B = 1
 194     is2B = 2
 195     is4B = 3
 196     is8B = 4
 197
 198
 199 @unique
 200 class RC(Enum):
 201     NONE = 0
 202     ONE = 1
 203     RC = 2
 204
 205
 206 @unique
 207 class CryIn(Enum):
 208     ZERO = 0
 209     ONE = 1
 210     CA = 2
 211
 212 @unique
 213 class SPR(Enum):
 214     XER    = 1
 215     LR     = 8
 216     CTR    = 9
 217     TB     = 268
 218     SRR0   = 26
 219     SRR1   = 27
 220     HSRR0  = 314
 221     HSRR1  = 315
 222     SPRG0  = 272
 223     SPRG1  = 273
 224     SPRG2  = 274
 225     SPRG3  = 275
 226     SPRG3U = 259
 227     HSPRG0 = 304
 228     HSPRG1 = 305
 229