def generate(self, **kwargs):
# Process the options specified in the fctrl file
# Will set: _requested_fault_type
# _page_fault_level
# _iter_count - number of instructions to generate
self._processFctrlOptions()
# Generate some no-ops before making changes to the paging choices
self._genDummyInstructions()
# Modify the paging choices based on the options parsed from the fctrl file
page_fault_mod = PageFaultModifier(
self.genThread, self.getGlobalState("AppRegisterWidth"))
if not self._requested_fault_type in page_fault_mod.getValidFaultTypes(
):
self.error("'PageFaultType' of {} is an unsupported type.").format(
self._requested_fault_type)
else:
if self._page_fault_level == None:
page_fault_mod.apply(**{"Type": self._requested_fault_type})
else:
page_fault_mod.apply(
**{
"Type": self._requested_fault_type,
"Level": [self._page_fault_level]
})
# Generate the faulting instructions
for _ in range(self._iter_count):
instr_id = self.genInstruction(self.choice(self._mInstrList))
instr_obj = self.queryInstructionRecord(instr_id)
# Write exception count info into the gen.log
self._displayExceptionInfo(instr_obj)
# Write the page translation info into the gen.log
ls_target_addr = instr_obj["LSTarget"]
page_obj = self.getPageInfo(ls_target_addr, "VA", 0)
displayPageInfo(self, page_obj)
# Restore the paging choices to values before the page_fault_mod.apply
page_fault_mod.revert()
# Some no-ops after the paging choices were restored
self._genDummyInstructions()
def generate(self, **kwargs):
page_fault_mod = PageFaultModifier(
self.genThread, self.getGlobalState("AppRegisterWidth")
)
page_fault_mod.apply(**{"All": 1})
# The PageFaultModifier alters the page size choices, so we need to
# set the desired values after applying the page fault modifications
choices_mod = ChoicesModifier(self.genThread)
satp_info = self.getRegisterInfo("satp", self.getRegisterIndex("satp"))
if satp_info["Width"] == 32:
choices_mod.modifyPagingChoices(
"Page size#4K granule#S#stage 1", {"4K": 1, "4M": 10}
)
else:
choices_mod.modifyPagingChoices(
"Page size#4K granule#S#stage 1",
{"4K": 1, "2M": 10, "1G": 10, "512G": 10},
)
choices_mod.commitSet()
instruction_list = ("JAL##RISCV", "JALR##RISCV")
for _ in range(RandomUtils.random32(2, 5)):
self.genInstruction(self.choice(instruction_list))
page_fault_mod.revert()
if self.queryExceptionRecordsCount(1) != 0:
self.error("Unexpected instruction access fault.")
def createPageFaultModifier(self):
return PageFaultModifier(self.genThread)
def createPageFaultModifier(self):
return PageFaultModifier(self.genThread,
self.getGlobalState("AppRegisterWidth"))