mirror of
https://github.com/JakeHillion/object-introspection.git
synced 2024-09-19 11:09:05 +01:00
Delete oi_compile
It has been replaced by oilgen and has become a burden to keep up-to-date with CodeGen changes.
This commit is contained in:
Alastair Robertson
Alastair Robertson
parent
885c2ec369
commit
f1d982f0a8
@ -294,10 +294,6 @@ add_executable(oilgen
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)
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target_link_libraries(oilgen oicore)
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### Object Introspection Compiler
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add_executable(oi_compile src/OICompile.cpp)
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target_link_libraries(oi_compile oicore oil)
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### Object Introspection cache Printer (OIP)
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add_executable(oip tools/OIP.cpp)
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set_project_warnings(oip)
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@ -351,6 +347,6 @@ target_precompile_headers(oicore
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PUBLIC <glog/logging.h>
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)
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foreach(TARGET oil oip oi_compile oid oitb)
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foreach(TARGET oil oip oid oitb)
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target_precompile_headers(${TARGET} REUSE_FROM oicore)
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endforeach()
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@ -1,203 +0,0 @@
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <glog/logging.h>
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extern "C" {
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#include <drgn.h>
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}
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#include <filesystem>
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#include "OICodeGen.h"
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#include "OICompiler.h"
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#include "OILibraryImpl.h"
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#include "OIUtils.h"
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#include "ObjectIntrospection.h"
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namespace fs = std::filesystem;
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static void assert_drgn_succeeded(struct drgn_error *err, const char *message) {
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if (err) {
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LOG(ERROR) << message << ": " << err->message;
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exit(EXIT_FAILURE);
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}
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}
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static bool compile_type(
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struct drgn_qualified_type *type, uintptr_t function_addr,
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OICompiler::Config &compilerConfig, OICodeGen::Config &generatorConfig,
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std::vector<std::pair<std::string, std::string>> &results) {
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std::string code =
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#include "OITraceCode.cpp"
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;
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auto codegen = OICodeGen::buildFromConfig(generatorConfig);
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if (!codegen) {
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return false;
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}
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codegen->setRootType(*type);
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if (!codegen->generate(code)) {
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return false;
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}
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const auto identifier =
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ObjectIntrospection::function_identifier(function_addr);
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if (drgn_type_has_name(type->type)) {
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VLOG(1) << "Identifier for type '" << drgn_type_name(type->type) << "' is "
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<< identifier;
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}
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OICompiler compiler{{}, compilerConfig};
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auto source_path =
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identifier +
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OICache::extensions[static_cast<size_t>(OICache::Entity::Source)];
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auto object_path =
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identifier +
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OICache::extensions[static_cast<size_t>(OICache::Entity::Object)];
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if (!compiler.compile(code, source_path, object_path)) {
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return false;
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}
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results.emplace_back(identifier, object_path);
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return true;
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}
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int main(int argc, char *argv[]) {
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google::LogToStderr();
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google::InitGoogleLogging("oi_compile");
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// Rudimentary argument parsing:
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// argv[1] is the executable we want to perform codegen for
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// argv[2] is an optional configuration file
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if (argc <= 1) {
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LOG(ERROR)
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<< "Please provide the file to perform codegen for as an argument";
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return EXIT_FAILURE;
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}
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if (argc > 3) {
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LOG(ERROR) << "Unrecognized command line arguments, oi_compile accepts at "
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"most two arguments (the file to perform codegen for, and "
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"optionally a config file)";
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return EXIT_FAILURE;
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}
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const char *target = argv[1];
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if (!fs::exists(target)) {
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LOG(ERROR) << target << ": file does not exist";
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return EXIT_FAILURE;
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}
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if (!fs::is_regular_file(target)) {
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LOG(ERROR) << target << ": not a regular file";
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return EXIT_FAILURE;
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}
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const char *config_file =
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argc == 3 ? argv[2] : "/usr/local/share/oi/base.oid.toml";
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if (!fs::exists(config_file)) {
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LOG(ERROR) << config_file << ": file does not exist";
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return EXIT_FAILURE;
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}
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// OI initialization
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OICompiler::Config compilerConfig{};
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OICodeGen::Config generatorConfig{};
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if (!OIUtils::processConfigFile(config_file, compilerConfig,
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generatorConfig)) {
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LOG(ERROR) << "Failed to process config file";
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return EXIT_FAILURE;
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}
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generatorConfig.useDataSegment = false;
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// drgn initialization
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char envVar[] = "RGN_ENABLE_TYPE_ITERATOR=1";
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if (putenv(envVar) == -1) {
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PLOG(ERROR)
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<< "Failed to set environment variable DRGN_ENABLE_TYPE_ITERATOR";
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return EXIT_FAILURE;
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}
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struct drgn_program *prog;
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assert_drgn_succeeded(drgn_program_create(NULL, &prog),
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"Error while initializing drgn program");
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assert_drgn_succeeded(
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drgn_program_load_debug_info(prog, &target, 1, false, false),
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"Error while loading debug info");
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struct drgn_type_iterator *types;
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assert_drgn_succeeded(drgn_oil_type_iterator_create(prog, &types),
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"Error while creating type iterator");
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// Perform codegen for each type
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std::vector<std::pair<std::string, std::string>> results{};
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struct drgn_qualified_type *type;
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uintptr_t *function_addrs;
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std::size_t function_addrs_len;
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assert_drgn_succeeded(drgn_oil_type_iterator_next(
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types, &type, &function_addrs, &function_addrs_len),
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"Error while advancing type iterator");
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while (type) {
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for (std::size_t i = 0; i < function_addrs_len; i++) {
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auto function_addr = function_addrs[i];
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if (!compile_type(type, function_addr, compilerConfig, generatorConfig,
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results)) {
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if (drgn_type_has_name(type->type)) {
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LOG(ERROR) << "Compilation failed for type '"
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<< drgn_type_name(type->type) << "'";
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} else {
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LOG(ERROR)
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<< "Compilation failed for type with template function address 0x"
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<< std::hex << function_addr;
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}
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return EXIT_FAILURE;
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}
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}
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free(function_addrs);
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assert_drgn_succeeded(
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drgn_oil_type_iterator_next(types, &type, &function_addrs,
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&function_addrs_len),
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"Error while advancing type iterator");
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}
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drgn_type_iterator_destroy(types);
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// Finally, create a new executable by copying the given executable
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// and appending the object files created by codegen to the new
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// executable as ELF sections, with one section for each type.
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std::string output = target + std::string("_oil");
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if (fs::exists(output)) {
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LOG(WARNING) << output << " already exists, overwriting it";
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fs::remove(output);
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}
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fs::copy(target, output);
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std::string command = "objcopy";
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for (auto &[identifier, object_path] : results) {
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command += " --add-section ";
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command += ObjectIntrospection::OI_SECTION_PREFIX;
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command += identifier;
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command += "=";
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command += object_path;
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}
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command += " ";
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command += output;
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int status = system(command.c_str());
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// Delete temporary files now that we're done with them
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for (auto &[_, object_path] : results) {
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fs::remove(object_path);
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}
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if (status == -1) {
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PLOG(ERROR) << "Failed to launch subprocess";
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return EXIT_FAILURE;
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} else if (status != 0) {
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LOG(ERROR) << "objcopy exited with non-zero exit code " << status;
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return EXIT_FAILURE;
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}
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}
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