First read/write!
This commit is contained in:
Alex Mykyta
@@ -68,104 +68,130 @@ class Dereferencer:
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return self.hwif.get_input_identifier(obj)
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if isinstance(obj, PropertyReference):
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if isinstance(obj.node, FieldNode):
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return self.get_field_propref_value(obj.node, obj.name)
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elif isinstance(obj.node, RegNode):
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return self.get_reg_propref_value(obj.node, obj.name)
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else:
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raise RuntimeError
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# Value reduction properties.
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# Wrap with the appropriate Verilog reduction operator
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val = self.get_value(obj.node)
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if obj.name == "anded":
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return f"&({val})"
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elif obj.name == "ored":
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return f"|({val})"
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elif obj.name == "xored":
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return f"^({val})"
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raise RuntimeError("Unhandled reference to: %s" % obj)
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# references that directly access a property value
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if obj.name in {
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'decrvalue',
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'enable',
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'haltenable',
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'haltmask',
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'hwenable',
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'hwmask',
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'incrvalue',
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'mask',
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'reset',
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'resetsignal',
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}:
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return self.get_value(obj.node.get_property(obj.name))
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elif obj.name in {'incr', 'decr'}:
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prop_value = obj.node.get_property(obj.name)
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if prop_value is None:
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# unset by the user, points to the implied internal signal
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return self.field_logic.get_counter_control_identifier(obj)
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else:
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return self.get_value(prop_value)
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elif obj.name == "next":
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prop_value = obj.node.get_property(obj.name)
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if prop_value is None:
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# unset by the user, points to the implied internal signal
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return self.field_logic.get_field_next_identifier(obj.node)
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else:
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return self.get_value(prop_value)
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# References to another component value, or an implied input
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if obj.name in {'hwclr', 'hwset'}:
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prop_value = obj.node.get_property(obj.name)
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def get_field_propref_value(self, field: FieldNode, prop_name: str) -> str:
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# Value reduction properties.
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# Wrap with the appropriate Verilog reduction operator
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val = self.get_value(field)
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if prop_name == "anded":
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return f"&({val})"
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elif prop_name == "ored":
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return f"|({val})"
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elif prop_name == "xored":
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return f"^({val})"
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# references that directly access a property value
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if prop_name in {
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'decrvalue',
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'enable',
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'haltenable',
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'haltmask',
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'hwenable',
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'hwmask',
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'incrvalue',
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'mask',
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'reset',
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'resetsignal',
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}:
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return self.get_value(field.get_property(prop_name))
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# Counter properties
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if prop_name == 'incr':
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prop_value = field.get_property(prop_name)
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if prop_value is None:
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# unset by the user, points to the implied internal signal
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return self.field_logic.get_counter_incr_identifier(field)
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else:
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return self.get_value(prop_value)
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elif prop_name == 'decr':
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prop_value = field.get_property(prop_name)
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if prop_value is None:
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# unset by the user, points to the implied internal signal
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return self.field_logic.get_counter_decr_identifier(field)
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else:
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return self.get_value(prop_value)
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# Field Next
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if prop_name == "next":
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prop_value = field.get_property(prop_name)
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if prop_value is None:
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# unset by the user, points to the implied internal signal
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return self.field_logic.get_field_next_identifier(field)
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else:
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return self.get_value(prop_value)
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# References to another component value, or an implied input
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if prop_name in {'hwclr', 'hwset'}:
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prop_value = field.get_property(prop_name)
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if prop_value is True:
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# Points to inferred hwif input
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return self.hwif.get_implied_prop_input_identifier(field, prop_name)
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elif prop_value is False:
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# This should never happen, as this is checked by the compiler's validator
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raise RuntimeError
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else:
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return self.get_value(prop_value)
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# References to another component value, or an implied input
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# May have a complementary partner property
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complementary_pairs = {
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"we": "wel",
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"wel": "we",
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"swwe": "swwel",
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"swwel": "swwe",
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}
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if prop_name in complementary_pairs:
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prop_value = field.get_property(prop_name)
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if prop_value is True:
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# Points to inferred hwif input
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return self.hwif.get_implied_prop_input_identifier(field, prop_name)
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elif prop_value is False:
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# Try complementary property
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prop_value = field.get_property(complementary_pairs[prop_name])
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if prop_value is True:
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# Points to inferred hwif input
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return self.hwif.get_input_identifier(obj)
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return f"!({self.hwif.get_implied_prop_input_identifier(field, prop_name)})"
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elif prop_value is False:
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# This should never happen, as this is checked by the compiler's validator
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raise RuntimeError
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else:
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return self.get_value(prop_value)
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return f"!({self.get_value(prop_value)})"
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else:
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return self.get_value(prop_value)
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# References to another component value, or an implied input
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# May have a complementary partner property
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complementary_pairs = {
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"we": "wel",
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"wel": "we",
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"swwe": "swwel",
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"swwel": "swwe",
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}
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if obj.name in complementary_pairs:
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prop_value = obj.node.get_property(obj.name)
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if prop_value is True:
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# Points to inferred hwif input
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return self.hwif.get_input_identifier(obj)
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elif prop_value is False:
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# Try complementary property
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prop_value = obj.node.get_property(complementary_pairs[obj.name])
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if prop_value is True:
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# Points to inferred hwif input
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return f"!({self.hwif.get_input_identifier(obj)})"
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elif prop_value is False:
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# This should never happen, as this is checked by the compiler's validator
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raise RuntimeError
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else:
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return f"!({self.get_value(prop_value)})"
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else:
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return self.get_value(prop_value)
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if prop_name == "swacc":
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return self.field_logic.get_swacc_identifier(field)
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if prop_name == "swmod":
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return self.field_logic.get_swmod_identifier(field)
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"""
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TODO:
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Resolves to an internal signal used in the field's logic
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decrsaturate
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decrthreshold
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halt
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incrsaturate
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incrthreshold
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intr
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overflow
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saturate
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swacc
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swmod
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threshold
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"""
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raise RuntimeError("Unhandled reference to: %s->%s" % (field, prop_name))
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raise RuntimeError("Unhandled reference to: %s", obj)
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"""
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TODO:
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Resolves to an internal signal used in the field's logic
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decrsaturate
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decrthreshold
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incrsaturate
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incrthreshold
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overflow
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saturate
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threshold
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"""
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def get_reg_propref_value(self, reg: RegNode, prop_name: str) -> str:
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# TODO: halt, intr
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raise NotImplementedError
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def get_access_strobe(self, obj: Union[RegNode, FieldNode]) -> str:
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"""
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