+from enum import Enum
+from fnmatch import fnmatchcase
+import os
import random
-from openpower.consts import FastRegsEnum
+from openpower.consts import FastRegsEnum, StateRegsEnum
from openpower.decoder.power_enums import SPRfull as SPR, spr_dict
+from functools import lru_cache
+
# note that we can get away with using SPRfull here because the values
# (numerical values) are what is used for lookup.
-spr_to_fast = { SPR.CTR: FastRegsEnum.CTR,
- SPR.LR: FastRegsEnum.LR,
- SPR.TAR: FastRegsEnum.TAR,
- SPR.SRR0: FastRegsEnum.SRR0,
- SPR.SRR1: FastRegsEnum.SRR1,
- SPR.XER: FastRegsEnum.XER,
- SPR.DEC: FastRegsEnum.DEC,
- SPR.TB: FastRegsEnum.TB,
- }
+spr_to_fast = {
+ SPR.LR: FastRegsEnum.LR,
+ SPR.CTR: FastRegsEnum.CTR,
+ SPR.SRR0: FastRegsEnum.SRR0,
+ SPR.SRR1: FastRegsEnum.SRR1,
+ SPR.HSRR0: FastRegsEnum.HSRR0,
+ SPR.HSRR1: FastRegsEnum.HSRR1,
+ SPR.SPRG0_priv: FastRegsEnum.SPRG0,
+ SPR.SPRG1_priv: FastRegsEnum.SPRG1,
+ SPR.SPRG2_priv: FastRegsEnum.SPRG2,
+ SPR.SPRG3: FastRegsEnum.SPRG3,
+ SPR.HSPRG0: FastRegsEnum.HSPRG0,
+ SPR.HSPRG1: FastRegsEnum.HSPRG1,
+ SPR.XER: FastRegsEnum.XER,
+ SPR.TAR: FastRegsEnum.TAR,
+ SPR.SVSRR0: FastRegsEnum.SVSRR0,
+}
+
+spr_to_state = {SPR.DEC: StateRegsEnum.DEC,
+ SPR.TB: StateRegsEnum.TB,
+ }
+
+sprstr_to_state = {}
+state_to_spr = {}
+for (k, v) in spr_to_state.items():
+ sprstr_to_state[k.name] = v
+ state_to_spr[v] = k
+
+
+def state_reg_to_spr(spr_num):
+ return state_to_spr[spr_num].value
+
+
+def spr_to_state_reg(spr_num):
+ if not isinstance(spr_num, str):
+ spr_num = spr_dict[spr_num].SPR
+ return sprstr_to_state.get(spr_num, None)
+
sprstr_to_fast = {}
fast_to_spr = {}
sprstr_to_fast[k.name] = v
fast_to_spr[v] = k
+
def fast_reg_to_spr(spr_num):
return fast_to_spr[spr_num].value
# TODO: make this a util routine (somewhere)
def mask_extend(x, nbits, repeat):
res = 0
- extended = (1<<repeat)-1
+ extended = (1 << repeat)-1
for i in range(nbits):
- if x & (1<<i):
+ if x & (1 << i):
res |= extended << (i*repeat)
return res
-
+
# makes a logarithmically-skewed random number
def log_rand(n, min_val=1):
logrange = random.randint(1, n)
return random.randint(min_val, (1 << logrange)-1)
+
+
+class LogType(Enum):
+ Default = "default"
+ InstrInOuts = "instr_in_outs"
+ SkipCase = "skip_case"
+ OutputMatching = "output_matching"
+
+
+@lru_cache(typed=True)
+def __parse_log_env_var(silencelog_raw):
+ if silencelog_raw is None:
+ return {k: False for k in LogType}
+ silencelog = os.environ.decodevalue(silencelog_raw)
+ silencelog = silencelog.lower().split(",")
+ for i, v in enumerate(silencelog):
+ silencelog[i] = v.strip()
+ retval = {k: True for k in LogType}
+ if len(silencelog) > 1 and silencelog[-1] == "":
+ # allow trailing comma
+ silencelog.pop()
+ if len(silencelog) == 1:
+ if silencelog[0] in ("0", "false"):
+ for k in LogType:
+ retval[k] = False
+ silencelog.pop()
+ if silencelog[0] in ("1", "true", ""):
+ silencelog.pop()
+ for v in silencelog:
+ silenced = True
+ if v.startswith("!"):
+ v = v[1:]
+ silenced = False
+ matches = False
+ for k in LogType:
+ if fnmatchcase(k.value, v):
+ matches = True
+ retval[k] = silenced
+ assert matches, (f"SILENCELOG: {v!r} did not match any known LogType: "
+ f"LogTypes: {' '.join(i.value for i in LogType)}")
+ # for k, v in retval.items():
+ # print(repr(k), "silenced" if v else "active")
+ return retval
+
+
+__ENCODED_SILENCELOG = os.environ.encodekey("SILENCELOG")
+
+
+def log(*args, kind=LogType.Default, **kwargs):
+ """verbose printing, can be disabled by setting env var "SILENCELOG".
+ """
+ # look up in os.environ._data since it is a dict and hence won't raise
+ # internal exceptions to avoid triggering breakpoints on raised exceptions.
+ env_var = os.environ._data.get(__ENCODED_SILENCELOG, None)
+ silenced = __parse_log_env_var(env_var)
+ if silenced[kind]:
+ return
+ print(*args, **kwargs)