cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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clang-test.cpp (1404B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include "clang.h"
      3#include "clang-c.h"
      4extern "C" {
      5#include "../util.h"
      6}
      7#include "llvm/IR/Function.h"
      8#include "llvm/IR/LLVMContext.h"
      9
     10#include <tests/llvm.h>
     11#include <string>
     12
     13class perf_clang_scope {
     14public:
     15	explicit perf_clang_scope() {perf_clang__init();}
     16	~perf_clang_scope() {perf_clang__cleanup();}
     17};
     18
     19static std::unique_ptr<llvm::Module>
     20__test__clang_to_IR(void)
     21{
     22	unsigned int kernel_version;
     23
     24	if (fetch_kernel_version(&kernel_version, NULL, 0))
     25		return std::unique_ptr<llvm::Module>(nullptr);
     26
     27	std::string cflag_kver("-DLINUX_VERSION_CODE=" +
     28				std::to_string(kernel_version));
     29
     30	std::unique_ptr<llvm::Module> M =
     31		perf::getModuleFromSource({cflag_kver.c_str()},
     32					  "perf-test.c",
     33					  test_llvm__bpf_base_prog);
     34	return M;
     35}
     36
     37extern "C" {
     38int test__clang_to_IR(struct test_suite *test __maybe_unused,
     39                      int subtest __maybe_unused)
     40{
     41	perf_clang_scope _scope;
     42
     43	auto M = __test__clang_to_IR();
     44	if (!M)
     45		return -1;
     46	for (llvm::Function& F : *M)
     47		if (F.getName() == "bpf_func__SyS_epoll_pwait")
     48			return 0;
     49	return -1;
     50}
     51
     52int test__clang_to_obj(struct test_suite *test __maybe_unused,
     53                       int subtest __maybe_unused)
     54{
     55	perf_clang_scope _scope;
     56
     57	auto M = __test__clang_to_IR();
     58	if (!M)
     59		return -1;
     60
     61	auto Buffer = perf::getBPFObjectFromModule(&*M);
     62	if (!Buffer)
     63		return -1;
     64	return 0;
     65}
     66
     67}