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-rw-r--r--tools/perf/util/c++/clang.cpp29
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/perf/util/c++/clang.cpp b/tools/perf/util/c++/clang.cpp
index 2a1a75df204f..1e974152cac2 100644
--- a/tools/perf/util/c++/clang.cpp
+++ b/tools/perf/util/c++/clang.cpp
@@ -163,4 +163,33 @@ void perf_clang__cleanup(void)
163 perf::LLVMCtx.reset(nullptr); 163 perf::LLVMCtx.reset(nullptr);
164 llvm::llvm_shutdown(); 164 llvm::llvm_shutdown();
165} 165}
166
167int perf_clang__compile_bpf(const char *filename,
168 void **p_obj_buf,
169 size_t *p_obj_buf_sz)
170{
171 using namespace perf;
172
173 if (!p_obj_buf || !p_obj_buf_sz)
174 return -EINVAL;
175
176 llvm::opt::ArgStringList CFlags;
177 auto M = getModuleFromSource(std::move(CFlags), filename);
178 if (!M)
179 return -EINVAL;
180 auto O = getBPFObjectFromModule(&*M);
181 if (!O)
182 return -EINVAL;
183
184 size_t size = O->size_in_bytes();
185 void *buffer;
186
187 buffer = malloc(size);
188 if (!buffer)
189 return -ENOMEM;
190 memcpy(buffer, O->data(), size);
191 *p_obj_buf = buffer;
192 *p_obj_buf_sz = size;
193 return 0;
194}
166} 195}