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Move dead submodules in-tree

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Signed-off-by: swurl <swurl@swurl.xyz>
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swurl 2025-05-31 02:33:02 -04:00
parent c0cceff365
commit 6c655321e6
Signed by untrusted user: crueter
GPG key ID: A5A7629F109C8FD1
4081 changed files with 1185566 additions and 45 deletions
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externals/breakpad/src/processor/postfix_evaluator_unittest.cc vendored Normal file
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// Copyright 2010 Google LLC
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google LLC nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// postfix_evaluator_unittest.cc: Unit tests for PostfixEvaluator.
//
// Author: Mark Mentovai
#ifdef HAVE_CONFIG_H
#include <config.h> // Must come first
#endif
#include <assert.h>
#include <stdio.h>
#include <map>
#include <string>
#include "processor/postfix_evaluator-inl.h"
#include "common/using_std_string.h"
#include "google_breakpad/common/breakpad_types.h"
#include "google_breakpad/processor/memory_region.h"
#include "processor/logging.h"
namespace {
using std::map;
using google_breakpad::MemoryRegion;
using google_breakpad::PostfixEvaluator;
// FakeMemoryRegion is used to test PostfixEvaluator's dereference (^)
// operator. The result of dereferencing a value is one greater than
// the value.
class FakeMemoryRegion : public MemoryRegion {
public:
virtual uint64_t GetBase() const { return 0; }
virtual uint32_t GetSize() const { return 0; }
virtual bool GetMemoryAtAddress(uint64_t address, uint8_t* value) const {
*value = address + 1;
return true;
}
virtual bool GetMemoryAtAddress(uint64_t address, uint16_t* value) const {
*value = address + 1;
return true;
}
virtual bool GetMemoryAtAddress(uint64_t address, uint32_t* value) const {
*value = address + 1;
return true;
}
virtual bool GetMemoryAtAddress(uint64_t address, uint64_t* value) const {
*value = address + 1;
return true;
}
virtual void Print() const {
assert(false);
}
};
struct EvaluateTest {
// Expression passed to PostfixEvaluator::Evaluate.
const string expression;
// True if the expression is expected to be evaluable, false if evaluation
// is expected to fail.
bool evaluable;
};
struct EvaluateTestSet {
// The dictionary used for all tests in the set.
PostfixEvaluator<unsigned int>::DictionaryType* dictionary;
// The list of tests.
const EvaluateTest* evaluate_tests;
// The number of tests.
unsigned int evaluate_test_count;
// Identifiers and their expected values upon completion of the Evaluate
// tests in the set.
map<string, unsigned int>* validate_data;
};
struct EvaluateForValueTest {
// Expression passed to PostfixEvaluator::Evaluate.
const string expression;
// True if the expression is expected to be evaluable, false if evaluation
// is expected to fail.
bool evaluable;
// If evaluable, the value we expect it to yield.
unsigned int value;
};
static bool RunTests() {
// The first test set checks the basic operations and failure modes.
PostfixEvaluator<unsigned int>::DictionaryType dictionary_0;
const EvaluateTest evaluate_tests_0[] = {
{ "$rAdd 2 2 + =", true }, // $rAdd = 2 + 2 = 4
{ "$rAdd $rAdd 2 + =", true }, // $rAdd = $rAdd + 2 = 6
{ "$rAdd 2 $rAdd + =", true }, // $rAdd = 2 + $rAdd = 8
{ "99", false }, // put some junk on the stack...
{ "$rAdd2 2 2 + =", true }, // ...and make sure things still work
{ "$rAdd2\t2\n2 + =", true }, // same but with different whitespace
{ "$rAdd2 2 2 + = ", true }, // trailing whitespace
{ " $rAdd2 2 2 + =", true }, // leading whitespace
{ "$rAdd2 2 2 + =", true }, // extra whitespace
{ "$T0 2 = +", false }, // too few operands for add
{ "2 + =", false }, // too few operands for add
{ "2 +", false }, // too few operands for add
{ "+", false }, // too few operands for add
{ "^", false }, // too few operands for dereference
{ "=", false }, // too few operands for assignment
{ "2 =", false }, // too few operands for assignment
{ "2 2 + =", false }, // too few operands for assignment
{ "2 2 =", false }, // can't assign into a literal
{ "k 2 =", false }, // can't assign into a constant
{ "2", false }, // leftover data on stack
{ "2 2 +", false }, // leftover data on stack
{ "$rAdd", false }, // leftover data on stack
{ "0 $T1 0 0 + =", false }, // leftover data on stack
{ "$T2 $T2 2 + =", false }, // can't operate on an undefined value
{ "$rMul 9 6 * =", true }, // $rMul = 9 * 6 = 54
{ "$rSub 9 6 - =", true }, // $rSub = 9 - 6 = 3
{ "$rDivQ 9 6 / =", true }, // $rDivQ = 9 / 6 = 1
{ "$rDivM 9 6 % =", true }, // $rDivM = 9 % 6 = 3
{ "$rDeref 9 ^ =", true }, // $rDeref = ^9 = 10 (FakeMemoryRegion)
{ "$rAlign 36 8 @ =", true }, // $rAlign = 36 @ 8
{ "$rAdd3 2 2 + =$rMul2 9 6 * =", true } // smashed-equals tokenization
};
map<string, unsigned int> validate_data_0;
validate_data_0["$rAdd"] = 8;
validate_data_0["$rAdd2"] = 4;
validate_data_0["$rSub"] = 3;
validate_data_0["$rMul"] = 54;
validate_data_0["$rDivQ"] = 1;
validate_data_0["$rDivM"] = 3;
validate_data_0["$rDeref"] = 10;
validate_data_0["$rAlign"] = 32;
validate_data_0["$rAdd3"] = 4;
validate_data_0["$rMul2"] = 54;
// The second test set simulates a couple of MSVC program strings.
// The data is fudged a little bit because the tests use FakeMemoryRegion
// instead of a real stack snapshot, but the program strings are real and
// the implementation doesn't know or care that the data is not real.
PostfixEvaluator<unsigned int>::DictionaryType dictionary_1;
dictionary_1["$ebp"] = 0xbfff0010;
dictionary_1["$eip"] = 0x10000000;
dictionary_1["$esp"] = 0xbfff0000;
dictionary_1[".cbSavedRegs"] = 4;
dictionary_1[".cbParams"] = 4;
dictionary_1[".raSearchStart"] = 0xbfff0020;
const EvaluateTest evaluate_tests_1[] = {
{ "$T0 $ebp = $eip $T0 4 + ^ = $ebp $T0 ^ = $esp $T0 8 + = "
"$L $T0 .cbSavedRegs - = $P $T0 8 + .cbParams + =", true },
// Intermediate state: $T0 = 0xbfff0010, $eip = 0xbfff0015,
// $ebp = 0xbfff0011, $esp = 0xbfff0018,
// $L = 0xbfff000c, $P = 0xbfff001c
{ "$T0 $ebp = $eip $T0 4 + ^ = $ebp $T0 ^ = $esp $T0 8 + = "
"$L $T0 .cbSavedRegs - = $P $T0 8 + .cbParams + = $ebx $T0 28 - ^ =",
true },
// Intermediate state: $T0 = 0xbfff0011, $eip = 0xbfff0016,
// $ebp = 0xbfff0012, $esp = 0xbfff0019,
// $L = 0xbfff000d, $P = 0xbfff001d,
// $ebx = 0xbffefff6
{ "$T0 $ebp = $T2 $esp = $T1 .raSearchStart = $eip $T1 ^ = $ebp $T0 = "
"$esp $T1 4 + = $L $T0 .cbSavedRegs - = $P $T1 4 + .cbParams + = "
"$ebx $T0 28 - ^ =",
true }
};
map<string, unsigned int> validate_data_1;
validate_data_1["$T0"] = 0xbfff0012;
validate_data_1["$T1"] = 0xbfff0020;
validate_data_1["$T2"] = 0xbfff0019;
validate_data_1["$eip"] = 0xbfff0021;
validate_data_1["$ebp"] = 0xbfff0012;
validate_data_1["$esp"] = 0xbfff0024;
validate_data_1["$L"] = 0xbfff000e;
validate_data_1["$P"] = 0xbfff0028;
validate_data_1["$ebx"] = 0xbffefff7;
validate_data_1[".cbSavedRegs"] = 4;
validate_data_1[".cbParams"] = 4;
EvaluateTestSet evaluate_test_sets[] = {
{ &dictionary_0, evaluate_tests_0,
sizeof(evaluate_tests_0) / sizeof(EvaluateTest), &validate_data_0 },
{ &dictionary_1, evaluate_tests_1,
sizeof(evaluate_tests_1) / sizeof(EvaluateTest), &validate_data_1 },
};
unsigned int evaluate_test_set_count = sizeof(evaluate_test_sets) /
sizeof(EvaluateTestSet);
FakeMemoryRegion fake_memory;
PostfixEvaluator<unsigned int> postfix_evaluator =
PostfixEvaluator<unsigned int>(NULL, &fake_memory);
for (unsigned int evaluate_test_set_index = 0;
evaluate_test_set_index < evaluate_test_set_count;
++evaluate_test_set_index) {
EvaluateTestSet* evaluate_test_set =
&evaluate_test_sets[evaluate_test_set_index];
const EvaluateTest* evaluate_tests = evaluate_test_set->evaluate_tests;
unsigned int evaluate_test_count = evaluate_test_set->evaluate_test_count;
// The same dictionary will be used for each test in the set. Earlier
// tests can affect the state of the dictionary for later tests.
postfix_evaluator.set_dictionary(evaluate_test_set->dictionary);
// Use a new validity dictionary for each test set.
PostfixEvaluator<unsigned int>::DictionaryValidityType assigned;
for (unsigned int evaluate_test_index = 0;
evaluate_test_index < evaluate_test_count;
++evaluate_test_index) {
const EvaluateTest* evaluate_test = &evaluate_tests[evaluate_test_index];
// Do the test.
bool result = postfix_evaluator.Evaluate(evaluate_test->expression,
&assigned);
if (result != evaluate_test->evaluable) {
fprintf(stderr, "FAIL: evaluate set %d/%d, test %d/%d, "
"expression \"%s\", expected %s, observed %s\n",
evaluate_test_set_index, evaluate_test_set_count,
evaluate_test_index, evaluate_test_count,
evaluate_test->expression.c_str(),
evaluate_test->evaluable ? "evaluable" : "not evaluable",
result ? "evaluted" : "not evaluated");
return false;
}
}
// Validate the results.
for (map<string, unsigned int>::const_iterator validate_iterator =
evaluate_test_set->validate_data->begin();
validate_iterator != evaluate_test_set->validate_data->end();
++validate_iterator) {
const string identifier = validate_iterator->first;
unsigned int expected_value = validate_iterator->second;
map<string, unsigned int>::const_iterator dictionary_iterator =
evaluate_test_set->dictionary->find(identifier);
// The identifier must exist in the dictionary.
if (dictionary_iterator == evaluate_test_set->dictionary->end()) {
fprintf(stderr, "FAIL: evaluate test set %d/%d, "
"validate identifier \"%s\", "
"expected %d, observed not found\n",
evaluate_test_set_index, evaluate_test_set_count,
identifier.c_str(), expected_value);
return false;
}
// The value in the dictionary must be the same as the expected value.
unsigned int observed_value = dictionary_iterator->second;
if (expected_value != observed_value) {
fprintf(stderr, "FAIL: evaluate test set %d/%d, "
"validate identifier \"%s\", "
"expected %d, observed %d\n",
evaluate_test_set_index, evaluate_test_set_count,
identifier.c_str(), expected_value, observed_value);
return false;
}
// The value must be set in the "assigned" dictionary if it was a
// variable. It must not have been assigned if it was a constant.
bool expected_assigned = identifier[0] == '$';
bool observed_assigned = false;
PostfixEvaluator<unsigned int>::DictionaryValidityType::const_iterator
iterator_assigned = assigned.find(identifier);
if (iterator_assigned != assigned.end()) {
observed_assigned = iterator_assigned->second;
}
if (expected_assigned != observed_assigned) {
fprintf(stderr, "FAIL: evaluate test set %d/%d, "
"validate assignment of \"%s\", "
"expected %d, observed %d\n",
evaluate_test_set_index, evaluate_test_set_count,
identifier.c_str(), expected_assigned, observed_assigned);
return false;
}
}
}
// EvaluateForValue tests.
PostfixEvaluator<unsigned int>::DictionaryType dictionary_2;
dictionary_2["$ebp"] = 0xbfff0010;
dictionary_2["$eip"] = 0x10000000;
dictionary_2["$esp"] = 0xbfff0000;
dictionary_2[".cbSavedRegs"] = 4;
dictionary_2[".cbParams"] = 4;
dictionary_2[".raSearchStart"] = 0xbfff0020;
const EvaluateForValueTest evaluate_for_value_tests_2[] = {
{ "28907223", true, 28907223 }, // simple constant
{ "89854293 40010015 +", true, 89854293 + 40010015 }, // arithmetic
{ "-870245 8769343 +", true, 7899098 }, // negative constants
{ "$ebp $esp - $eip +", true, 0x10000010 }, // variable references
{ "18929794 34015074", false, 0 }, // too many values
{ "$ebp $ebp 4 - =", false, 0 }, // too few values
{ "$new $eip = $new", true, 0x10000000 }, // make new variable
{ "$new 4 +", true, 0x10000004 }, // see prior assignments
{ ".cfa 42 = 10", false, 0 } // can't set constants
};
const int evaluate_for_value_tests_2_size
= (sizeof (evaluate_for_value_tests_2)
/ sizeof (evaluate_for_value_tests_2[0]));
map<string, unsigned int> validate_data_2;
validate_data_2["$eip"] = 0x10000000;
validate_data_2["$ebp"] = 0xbfff000c;
validate_data_2["$esp"] = 0xbfff0000;
validate_data_2["$new"] = 0x10000000;
validate_data_2[".cbSavedRegs"] = 4;
validate_data_2[".cbParams"] = 4;
validate_data_2[".raSearchStart"] = 0xbfff0020;
postfix_evaluator.set_dictionary(&dictionary_2);
for (int i = 0; i < evaluate_for_value_tests_2_size; i++) {
const EvaluateForValueTest* test = &evaluate_for_value_tests_2[i];
unsigned int result;
if (postfix_evaluator.EvaluateForValue(test->expression, &result)
!= test->evaluable) {
fprintf(stderr, "FAIL: evaluate for value test %d, "
"expected evaluation to %s, but it %s\n",
i, test->evaluable ? "succeed" : "fail",
test->evaluable ? "failed" : "succeeded");
return false;
}
if (test->evaluable && result != test->value) {
fprintf(stderr, "FAIL: evaluate for value test %d, "
"expected value to be 0x%x, but it was 0x%x\n",
i, test->value, result);
return false;
}
}
for (map<string, unsigned int>::iterator v = validate_data_2.begin();
v != validate_data_2.end(); v++) {
map<string, unsigned int>::iterator a = dictionary_2.find(v->first);
if (a == dictionary_2.end()) {
fprintf(stderr, "FAIL: evaluate for value dictionary check: "
"expected dict[\"%s\"] to be 0x%x, but it was unset\n",
v->first.c_str(), v->second);
return false;
} else if (a->second != v->second) {
fprintf(stderr, "FAIL: evaluate for value dictionary check: "
"expected dict[\"%s\"] to be 0x%x, but it was 0x%x\n",
v->first.c_str(), v->second, a->second);
return false;
}
dictionary_2.erase(a);
}
map<string, unsigned int>::iterator remaining = dictionary_2.begin();
if (remaining != dictionary_2.end()) {
fprintf(stderr, "FAIL: evaluation of test expressions put unexpected "
"values in dictionary:\n");
for (; remaining != dictionary_2.end(); remaining++)
fprintf(stderr, " dict[\"%s\"] == 0x%x\n",
remaining->first.c_str(), remaining->second);
return false;
}
return true;
}
} // namespace
int main(int argc, char** argv) {
BPLOG_INIT(&argc, &argv);
return RunTests() ? 0 : 1;
}