def _setUpTest(self):
if RandomUtils.random32(0, 1) == 1:
choices_mod = ChoicesModifier(self.genThread)
choice_weights = {"Aligned": 80, "Unaligned": 20}
choices_mod.modifyOperandChoices("Data alignment", choice_weights)
choices_mod.commitSet()
self._mUnalignedAllowed = True
def gen_thread_initialization(gen_thread):
choices_mod = ChoicesModifier(gen_thread)
# Increase the likelihood of using GPRs x10, x11, x12 and x13 by
# increasing the weighting. The default weighting in the
# operand_choices.xml file is 10 for each GPR.
choices_mod.modifyOperandChoices("GPRs", {"x10": 40, "x11": 40, "x12": 60, "x13": 60})
choices_mod.commitSet()
def generate(self, **kwargs):
choices_mod = ChoicesModifier(self.genThread)
for _ in range(10):
# Generate instructions with the default choices settings
# except for the paging choices for "Page size#4K
# granule#S#stage 1" which was set before this generate was called
# via the GenThreadInitialization below.
for _ in range(20):
if self.getGlobalState("AppRegisterWidth") == 32:
instr = self.pickWeighted(RV32_G_instructions)
else:
instr = self.pickWeighted(RV_G_instructions)
self.genInstruction(instr)
# Modify the choices settings
choices_mod.modifyOperandChoices(
"Rounding mode",
{"RNE": 0, "RTZ": 0, "RDN": 50, "RUP": 0, "RMM": 0, "DYN": 50},
)
choices_mod.modifyOperandChoices(
"Read after write address reuse", {"No reuse": 50, "Reuse": 50}
)
choices_mod.commitSet()
# generate instructions
for _ in range(20):
if self.getGlobalState("AppRegisterWidth") == 32:
instr_mix = {RV32F_map: 10, LDST32_All_map: 10}
else:
instr_mix = {ALU_Float_All_map: 10, LDST_All_map: 10}
instr = self.pickWeighted(instr_mix)
self.genInstruction(instr)
# undo the choices settings - revert back to prior
choices_mod.revert()
def generate(self, **kwargs):
choices_mod = ChoicesModifier(self.genThread)
for _ in range(10):
# Generate instructions with the default choices settings
# except for the paging choices for "Page size#4K
# granule#S#stage 1" which was set before this generate was called
# via the GenThreadInitialization below.
self._gen_rv_g_instructions()
# Modify the choices settings
choices_mod.modifyOperandChoices(
"Rounding mode",
{
"RNE": 0,
"RTZ": 0,
"RDN": 50,
"RUP": 0,
"RMM": 0,
"DYN": 50
},
)
choices_mod.modifyOperandChoices("Read after write address reuse",
{
"No reuse": 50,
"Reuse": 50
})
choices_mod.commitSet()
# generate instructions
self._gen_data_processing_and_load_store_instructions()
# undo the choices settings - revert back to prior
choices_mod.revert()