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|
# build-aux/measurestack/test_app_plugins.py - Tests for app_plugins.py
#
# Copyright (C) 2025 Luke T. Shumaker <lukeshu@lukeshu.com>
# SPDX-License-Identifier: AGPL-3.0-or-later
# pylint: disable=unused-variable
import typing
from . import analyze, app_plugins, testutil, util
from .analyze import BaseName, Node, QName, SkipModel
def test_assert_msg_fail() -> None:
# 1 2 3 4 5 6 7 <= call_depth
# - main()
# - __assert_msg_fail() *
# - __lm_light_printf()
# - fmt_vfctprintf()
# - stdio_putchar()
# - __assert_msg_fail() **
# - __lm_abort()
# - stdio_flush() (inconsequential)
# - __lm_abort() (inconsequential)
max_call_depth = 7
exp = [
"main",
"__assert_msg_fail",
"__lm_light_printf",
"fmt_vfctprintf",
"stdio_putchar",
"__assert_msg_fail",
"__lm_abort",
]
graph: typing.Sequence[tuple[str, typing.Collection[str]]] = [
# main.c
("main", {"__assert_msg_fail"}),
# assert.c
("__assert_msg_fail", {"__lm_light_printf", "__lm_abort"}),
# intercept.c / libfmt/libmisc.c
("__lm_abort", {}),
("__lm_light_printf", {"fmt_vfctprintf", "stdio_flush"}),
("stdio_flush", {}),
("stdio_putchar", {"__assert_msg_fail"}),
# printf.c
("fmt_vfctprintf", {"stdio_putchar"}),
]
graph_plugin = testutil.GraphProviderPlugin(max_call_depth, graph)
class SkipPlugin(testutil.NopPlugin):
def skipmodels(self) -> dict[BaseName, SkipModel]:
models = app_plugins.LibMiscPlugin(arg_c_fnames=[]).skipmodels()
assert BaseName("__assert_msg_fail") in models
orig_model = models[BaseName("__assert_msg_fail")]
def wrapped_model_fn(
chain: typing.Sequence[QName], node: Node, call: QName
) -> bool:
dbgstr = (
("=>".join(str(c) for c in [*chain, node.funcname]))
+ "=?=>"
+ str(call)
)
assert dbgstr in [
"__assert_msg_fail=?=>__lm_light_printf",
"__assert_msg_fail=?=>__lm_abort",
"__assert_msg_fail=>__lm_light_printf=>fmt_vfctprintf=>stdio_putchar=>__assert_msg_fail=?=>__lm_light_printf",
"__assert_msg_fail=>__lm_light_printf=>fmt_vfctprintf=>stdio_putchar=>__assert_msg_fail=?=>__lm_abort",
]
return orig_model.fn(chain, node, call)
models[BaseName("__assert_msg_fail")] = SkipModel(
orig_model.nchain, wrapped_model_fn
)
return models
def test_filter(name: QName) -> tuple[int, bool]:
if name.base() == BaseName("main"):
return 1, True
return 0, False
result = analyze.analyze(
ci_fnames=[],
app_func_filters={
"Main": test_filter,
},
app=util.PluginApplication(
testutil.nop_location_xform, [graph_plugin, SkipPlugin()]
),
cfg_max_call_depth=max_call_depth,
)
graph_plugin.assert_nstatic(result.groups["Main"].rows[QName("main")].nstatic, exp)
def test_fct() -> None:
# 1. | a + | b + | c + |*
# 2. | fmt_vsnprintf + | vprintf + | __lm_light_printf + |*
# 3. | fmt_vfctprintf + | fmt_vfctprintf + | fmt_vfctprintf + |
# 4. | fmt_state_putchar + | fmt_state_putchar + | fmt_state_putchar + |
# 5. | _out_buffer + | stdio_buffered_printer + | libfmt_light_fct + |*
# 6. | | __assert_msg_fail + | __assert_msg_fail + |
# 7. | | a. __lm_light_printf + | a. __lm_light_printf + |
# 8. | | a. fmt_vfctprintf + | a. fmt_vfctprintf + |
# 9. | | a. fmt_state_putchar + | a. fmt_state_putchar + |
# 10. | | a. libfmt_light_fct + | a. libfmt_light_fct + |
# 11. | | a. __assert_msg_fail + | a. __assert_msg_fail + |
# 12. | | a. __lm_abort + | a. __lm_abort + |
# 7. | | b. __lm_abort | b. __lm_abort |
max_call_depth = 12
exp_a = ["a", "fmt_vsnprintf", "fmt_vfctprintf", "fmt_state_putchar", "_out_buffer"]
exp_b = [
"b",
"__wrap_vprintf",
"fmt_vfctprintf",
"fmt_state_putchar",
"stdio_buffered_printer",
"__assert_msg_fail",
"__lm_light_printf",
"fmt_vfctprintf",
"fmt_state_putchar",
"libfmt_light_fct",
"__assert_msg_fail",
"__lm_abort",
]
exp_c = [
"c",
"__lm_light_printf",
"fmt_vfctprintf",
"fmt_state_putchar",
"libfmt_light_fct",
"__assert_msg_fail",
"__lm_light_printf",
"fmt_vfctprintf",
"fmt_state_putchar",
"libfmt_light_fct",
"__assert_msg_fail",
"__lm_abort",
]
graph: typing.Sequence[tuple[str, typing.Collection[str]]] = [
# main.c
("a", {"fmt_vsnprintf"}), # _out_buffer
("b", {"vprintf"}), # stdio_buffered_printer
("c", {"__lm_light_printf"}), # libfmt_light_printf
# wrappers
("fmt_vsnprintf", {"fmt_vfctprintf"}),
("__wrap_vprintf", {"fmt_vfctprintf"}),
("__lm_light_printf", {"fmt_vfctprintf"}),
# printf.c
("fmt_vfctprintf", {"fmt_state_putchar"}),
(
"fmt_state_putchar",
{"_out_buffer", "stdio_buffered_printer", "libfmt_light_fct"},
),
# fcts
("_out_buffer", {}),
("stdio_buffered_printer", {"__assert_msg_fail"}),
("libfmt_light_fct", {"__assert_msg_fail"}),
# assert.c
("__assert_msg_fail", {"__lm_light_printf", "__lm_abort"}),
# intercept.c / libfmt/libmisc.c
("__lm_abort", {}),
]
graph_plugin = testutil.GraphProviderPlugin(max_call_depth, graph)
plugins: list[util.Plugin] = [
graph_plugin,
app_plugins.LibMiscPlugin(arg_c_fnames=[]),
# fmt_vsnprintf => fct=_out_buffer
# if rp2040:
# __wrap_vprintf => fct=stdio_buffered_printer
# stdio_vprintf => fct=stdio_buffered_printer
# __lm_light_printf => fct=libfmt_light_fct
# if host:
# __lm_printf => fct=libfmt_libc_fct
# __lm_light_printf => fct=libfmt_libc_fct
app_plugins.PicoFmtPlugin("rp2040", []),
]
def test_filter(name: QName) -> tuple[int, bool]:
if str(name.base()) in ["a", "b", "c"]:
return 1, True
return 0, False
result = analyze.analyze(
ci_fnames=[],
app_func_filters={
"Main": test_filter,
},
app=util.PluginApplication(testutil.nop_location_xform, plugins),
cfg_max_call_depth=max_call_depth,
)
graph_plugin.assert_nstatic(result.groups["Main"].rows[QName("a")].nstatic, exp_a)
graph_plugin.assert_nstatic(result.groups["Main"].rows[QName("b")].nstatic, exp_b)
graph_plugin.assert_nstatic(result.groups["Main"].rows[QName("c")].nstatic, exp_c)
def test_assert_formatter() -> None:
# _________________________________________________________
# | |
# | |
# | main |
# | | |
# | _ __wrap_vprintf |
# | / \ | _______________ |
# | | fmt_vfctprintf / \ |
# | | \ fmt_state_printf | |
# | | \____ ____/ | |
# | | \ / | |
# | | _vfctprintf | |
# | | ____/ \____ ^ |
# | | / ?<---snip | |
# | | conv_builtin \ | |
# | | | libfmt_conv_formatter | |
# | | | | | |
# | ^ \ lib9p_msg_Rread_format | |
# | | \ _____________/ | \______/ |
# | | \ / \ |
# | | fmt_state_putchar \ |
# | | ?<-?<--------snip | |
# | | / \_________ | |
# | | / \ | |
# | | stdio_buffered_printer \ | |
# | | \ libfmt_light_fct | |
# | | \ | / |
# | | \_______ | ________/ |
# | | \ | / |
# | | __assert_msg_fail |
# | | ___/ \____ |
# | | snip--->? \ |
# | | / \ |
# | | __lm_light_printf \ |
# | \____________/ __lm_abort |
# | |
# |_________________________________________________________|
#
graph: typing.Sequence[tuple[str, typing.Collection[str]]] = [
("main", {"vprintf"}),
("__wrap_vprintf", {"fmt_vfctprintf"}),
("fmt_vfctprintf", {"_vfctprintf"}),
("fmt_state_printf", {"_vfctprintf"}),
("_vfctprintf", {"conv_builtin", "libfmt_conv_formatter"}),
("conv_builtin", {"fmt_state_putchar"}),
("libfmt_conv_formatter", {"lib9p_msg_Rread_format"}),
(
"lib9p_msg_Rread_format",
{"fmt_state_putchar", "__assert_msg_fail", "fmt_state_printf"},
),
("fmt_state_putchar", {"stdio_buffered_printer", "libfmt_light_fct"}),
("stdio_buffered_printer", {"__assert_msg_fail"}),
("libfmt_light_fct", {"__assert_msg_fail"}),
("__assert_msg_fail", {"__lm_light_printf", "__lm_abort"}),
("__lm_light_printf", {"fmt_vfctprintf"}),
("__lm_abort", {}),
]
# fct-determining wrappers have their callees marked with "|":
#
# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 <= call_depth
# - main() ; +
# - __wrap__vprintf() ; +
# |- fmt_vfctprintf() ; +
# | - _vfctprintf() ; +
# | - conv_builtin() ;
# | - fmt_state_putchar() ;
# | - stdio_buffered_printer() ;
# | - __assert_msg_fail() ;
# | - __lm_light_printf() ;
# | |- fmt_vfctprintf() ;
# | | - _vfctprintf() ;
# | | - conv_builtin() ;
# | | - fmt_state_putchar() ;
# | | - stdio_buffered_printer() ; skip (wrong fct)
# | | - libfmt_light_fct() ;
# | | - __assert_msg_fail() ;
# | | - __lm_light_printf() ; skip (nested __assert_msg_fail)
# | | - __lm_abort() ;
# | | - libfmt_conv_formatter() ; skip (fct won't use %v)
# | - __lm_abort() ;
# | - libfmt_light_fct() ; skip (wrong fct)
# | - libfmt_conv_formatter() ; +
# | - lib9p_msg_Rread_format() ; +
# | - fmt_state_putchar() ;
# | - stdio_buffered_printer() ;
# | - __assert_msg_fail() ;
# | - __lm_light_printf() ;
# | |- fmt_vfctprintf() ;
# | | - _vfctprintf() ;
# | | - conv_builtin() ;
# | | - fmt_state_putchar() ;
# | | - stdio_buffered_printer() ; skip (wrong fct)
# | | - libfmt_light_fct() ;
# | | - __assert_msg_fail() ;
# | | - __lm_light_printf() ; skip (neseted __assert_msg_fail)
# | | - __lm_abort() ;
# | | - libfmt_conv_formatter() ; skip (fct won't use %v)
# | - __lm_abort() ;
# | - libfmt_light_fct() ; skip (wrong fct)
# | - __assert_msg_fail() ;
# | - __lm_light_printf() ;
# | |- fmt_vfctprintf() ;
# | | - _vfctprintf() ;
# | | - conv_builtin() ;
# | | - fmt_state_putchar() ;
# | | - stdio_buffered_printer() ; skip (wrong fct)
# | | - libfmt_light_fct() ;
# | | - __assert_msg_fail() ;
# | | - __lm_light_printf() ; skip (nested__assert_msg_fail)
# | | - __lm_abort() ;
# | | - libfmt_conv_formatter() ; skip (formatter won't use %v)
# | - __lm_abort() ;
# | - fmt_state_printf() ; +
# | - _vfctprintf() ; +
# | - conv_builtin() ; +
# | - fmt_state_putchar() ; +
# | - stdio_buffered_printer() ; +
# | - __assert_msg_fail() ; +
# | - __lm_light_printf() ; +
# | |- fmt_vfctprintf() ; +
# | | - _vfctprintf() ; +
# | | - conv_builtin() ; +
# | | - fmt_state_putchar() ; +
# | | - stdio_buffered_printer() ; skip (wrong fct)
# | | - libfmt_light_fct() ; +
# | | - __assert_msg_fail() ; +
# | | - __lm_light_printf() ; skip (neseted __assert_msg_fail)
# | | - __lm_abort() ; +
# | | - libfmt_conv_formatter() ; skip (fct won't use %v)
# | - __lm_abort() ;
# | - libfmt_light_fct() ; skip (wrong fct)
# | - libfmt_conv_formatter() ; skip (formatter won't use %v)
max_call_depth = 20
exp = [
"main",
"__wrap_vprintf",
"fmt_vfctprintf",
"_vfctprintf",
"libfmt_conv_formatter",
"lib9p_msg_Rread_format",
"fmt_state_printf",
"_vfctprintf",
"conv_builtin",
"fmt_state_putchar",
"stdio_buffered_printer",
"__assert_msg_fail",
"__lm_light_printf",
"fmt_vfctprintf",
"_vfctprintf",
"conv_builtin",
"fmt_state_putchar",
"libfmt_light_fct",
"__assert_msg_fail",
"__lm_abort",
]
graph_plugin = testutil.GraphProviderPlugin(max_call_depth, graph)
plugins: list[util.Plugin] = [
graph_plugin,
app_plugins.LibMiscPlugin(arg_c_fnames=[]),
app_plugins.PicoFmtPlugin("rp2040", [BaseName("lib9p_msg_Rread_format")]),
]
def test_filter(name: QName) -> tuple[int, bool]:
if name.base() == BaseName("main"):
return 1, True
return 0, False
result = analyze.analyze(
ci_fnames=[],
app_func_filters={
"Main": test_filter,
},
app=util.PluginApplication(testutil.nop_location_xform, plugins),
cfg_max_call_depth=max_call_depth,
)
graph_plugin.assert_nstatic(result.groups["Main"].rows[QName("main")].nstatic, exp)
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