# along with this program. If not, see <http://www.gnu.org/licenses/>.
import textwrap
-import gdbcopyright
-# All the components created in gdbarch-components.py.
-components = []
+# gdbarch_components is imported only for its side-effect of filling
+# `gdbarch_types.components`.
+import gdbarch_components # noqa: F401 # type: ignore
+import gdbcopyright
+from gdbarch_types import Component, Function, Info, Value, components
-def indentation(n_columns):
+def indentation(n_columns: int):
"""Return string with tabs and spaces to indent line to N_COLUMNS."""
return "\t" * (n_columns // 8) + " " * (n_columns % 8)
-def join_type_and_name(t, n):
- "Combine the type T and the name N into a C declaration."
- if t.endswith("*") or t.endswith("&"):
- return t + n
- else:
- return t + " " + n
-
-
-def join_params(params):
- """Given a sequence of (TYPE, NAME) pairs, generate a comma-separated
- list of declarations."""
- params = [join_type_and_name(p[0], p[1]) for p in params]
- return ", ".join(params)
-
-
-class _Component:
- "Base class for all components."
-
- def __init__(self, **kwargs):
- for key in kwargs:
- setattr(self, key, kwargs[key])
- components.append(self)
-
- # It doesn't make sense to have a check of the result value
- # for a function or method with void return type.
- if self.type == "void" and self.result_checks:
- raise Exception("can't have result checks with a void return type")
-
- def get_predicate(self):
- "Return the expression used for validity checking."
- assert self.predicate and not isinstance(self.invalid, str)
- if self.predefault:
- predicate = f"gdbarch->{self.name} != {self.predefault}"
- else:
- predicate = f"gdbarch->{self.name} != NULL"
- return predicate
-
-
-class Info(_Component):
- "An Info component is copied from the gdbarch_info."
-
- def __init__(self, *, name, type, printer=None):
- super().__init__(name=name, type=type, printer=printer)
- # This little hack makes the generator a bit simpler.
- self.predicate = None
-
-
-class Value(_Component):
- "A Value component is just a data member."
-
- def __init__(
- self,
- *,
- name,
- type,
- comment=None,
- predicate=None,
- predefault=None,
- postdefault=None,
- invalid=None,
- printer=None,
- ):
- super().__init__(
- comment=comment,
- name=name,
- type=type,
- predicate=predicate,
- predefault=predefault,
- postdefault=postdefault,
- invalid=invalid,
- printer=printer,
- )
-
-
-class Function(_Component):
- "A Function component is a function pointer member."
-
- def __init__(
- self,
- *,
- name,
- type,
- params,
- comment=None,
- predicate=None,
- predefault=None,
- postdefault=None,
- invalid=None,
- printer=None,
- param_checks=None,
- result_checks=None,
- implement=True,
- ):
- super().__init__(
- comment=comment,
- name=name,
- type=type,
- predicate=predicate,
- predefault=predefault,
- postdefault=postdefault,
- invalid=invalid,
- printer=printer,
- params=params,
- param_checks=param_checks,
- result_checks=result_checks,
- implement=implement,
- )
-
- def ftype(self):
- "Return the name of the function typedef to use."
- return f"gdbarch_{self.name}_ftype"
-
- def param_list(self):
- "Return the formal parameter list as a string."
- return join_params(self.params)
-
- def set_list(self):
- """Return the formal parameter list of the caller function,
- as a string. This list includes the gdbarch."""
- arch_arg = ("struct gdbarch *", "gdbarch")
- arch_tuple = [arch_arg]
- return join_params(arch_tuple + list(self.params))
-
- def actuals(self):
- "Return the actual parameters to forward, as a string."
- return ", ".join([p[1] for p in self.params])
-
-
-class Method(Function):
- "A Method is like a Function but passes the gdbarch through."
-
- def param_list(self):
- "See superclass."
- return self.set_list()
-
- def actuals(self):
- "See superclass."
- result = ["gdbarch"] + [p[1] for p in self.params]
- return ", ".join(result)
-
-
-# Read the components.
-with open("gdbarch-components.py") as fd:
- exec(fd.read())
-
copyright = gdbcopyright.copyright(
"gdbarch.py", "Dynamic architecture support for GDB, the GNU debugger."
)
-def info(c):
+def info(c: Component):
"Filter function to only allow Info components."
return type(c) is Info
-def not_info(c):
+def not_info(c: Component):
"Filter function to omit Info components."
return type(c) is not Info
file=f,
)
for c in filter(not_info, components):
- if c.invalid is False:
- print(f" /* Skip verify of {c.name}, invalid_p == 0 */", file=f)
- elif c.predicate:
- print(f" /* Skip verify of {c.name}, has predicate. */", file=f)
- elif isinstance(c.invalid, str) and c.postdefault is not None:
- print(f" if ({c.invalid})", file=f)
- print(f" gdbarch->{c.name} = {c.postdefault};", file=f)
- elif c.predefault is not None and c.postdefault is not None:
- print(f" if (gdbarch->{c.name} == {c.predefault})", file=f)
+ # An opportunity to write in the 'postdefault' value. We
+ # change field's value to the postdefault if its current value
+ # is not different to the initial value of the field.
+ if c.postdefault is not None:
+ init_value = c.predefault or "0"
+ print(f" if (gdbarch->{c.name} == {init_value})", file=f)
print(f" gdbarch->{c.name} = {c.postdefault};", file=f)
- elif c.postdefault is not None:
- print(f" if (gdbarch->{c.name} == 0)", file=f)
- print(f" gdbarch->{c.name} = {c.postdefault};", file=f)
- elif isinstance(c.invalid, str):
+
+ # Now validate the value.
+ if isinstance(c.invalid, str):
print(f" if ({c.invalid})", file=f)
print(f""" log.puts ("\\n\\t{c.name}");""", file=f)
- elif c.predefault is not None:
- print(f" if (gdbarch->{c.name} == {c.predefault})", file=f)
- print(f""" log.puts ("\\n\\t{c.name}");""", file=f)
- elif c.invalid is True:
- print(f" if (gdbarch->{c.name} == 0)", file=f)
- print(f""" log.puts ("\\n\\t{c.name}");""", file=f)
+ elif c.predicate:
+ print(f" /* Skip verify of {c.name}, has predicate. */", file=f)
+ elif c.invalid:
+ if c.postdefault is not None:
+ # This component has its 'invalid' field set to True, but
+ # also has a postdefault. This makes no sense, the
+ # postdefault will have been applied above, so this field
+ # will not have a zero value.
+ raise Exception(
+ f"component {c.name} has postdefault and invalid set to True"
+ )
+ else:
+ init_value = c.predefault or "0"
+ print(f" if (gdbarch->{c.name} == {init_value})", file=f)
+ print(f""" log.puts ("\\n\\t{c.name}");""", file=f)
else:
- # We should not allow ourselves to simply do nothing here
- # because no other case applies. If we end up here then
- # either the input data needs adjusting so one of the
- # above cases matches, or we need additional cases adding
- # here.
- raise Exception("unhandled case when generating gdbarch validation")
+ print(f" /* Skip verify of {c.name}, invalid_p == 0 */", file=f)
print(" if (!log.empty ())", file=f)
print(
""" internal_error (_("verify_gdbarch: the following are invalid ...%s"),""",
print(f"gdbarch_{c.name} (struct gdbarch *gdbarch)", file=f)
print("{", file=f)
print(" gdb_assert (gdbarch != NULL);", file=f)
- if c.invalid is False:
- print(f" /* Skip verify of {c.name}, invalid_p == 0 */", file=f)
- elif isinstance(c.invalid, str):
+ if isinstance(c.invalid, str):
print(" /* Check variable is valid. */", file=f)
print(f" gdb_assert (!({c.invalid}));", file=f)
- elif c.predefault:
- print(" /* Check variable changed from pre-default. */", file=f)
- print(f" gdb_assert (gdbarch->{c.name} != {c.predefault});", file=f)
+ elif c.predicate:
+ print(" /* Check predicate was used. */", file=f)
+ print(f" gdb_assert (gdbarch_{c.name}_p (gdbarch));", file=f)
+ elif c.invalid or c.postdefault is not None:
+ init_value = c.predefault or "0"
+ print(" /* Check variable changed from its initial value. */", file=f)
+ print(f" gdb_assert (gdbarch->{c.name} != {init_value});", file=f)
+ else:
+ print(f" /* Skip verify of {c.name}, invalid_p == 0 */", file=f)
print(" if (gdbarch_debug >= 2)", file=f)
print(
f""" gdb_printf (gdb_stdlog, "gdbarch_{c.name} called\\n");""",
projects / binutils-gdb.git / blobdiff