1 //===----- DefaultHostBootstrapValues.cpp - Defaults for host process -----===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "llvm/ExecutionEngine/Orc/TargetProcess/DefaultHostBootstrapValues.h"
10 
11 #include "llvm/ExecutionEngine/Orc/Shared/OrcRTBridge.h"
12 #include "llvm/ExecutionEngine/Orc/TargetProcess/RegisterEHFrames.h"
13 
14 #ifdef __APPLE__
15 #include <dlfcn.h>
16 #endif // __APPLE__
17 
18 namespace llvm::orc {
19 
20 void addDefaultBootstrapValuesForHostProcess(
21     StringMap<std::vector<char>> &BootstrapMap,
22     StringMap<ExecutorAddr> &BootstrapSymbols) {
23 
24   // FIXME: We probably shouldn't set these on Windows?
25   BootstrapSymbols[rt::RegisterEHFrameSectionAllocActionName] =
26       ExecutorAddr::fromPtr(&llvm_orc_registerEHFrameSectionAllocAction);
27   BootstrapSymbols[rt::DeregisterEHFrameSectionAllocActionName] =
28       ExecutorAddr::fromPtr(&llvm_orc_deregisterEHFrameSectionAllocAction);
29 
30 #ifdef __APPLE__
31   if (!dlsym(RTLD_DEFAULT, "__unw_add_find_dynamic_unwind_sections"))
32     BootstrapMap["darwin-use-ehframes-only"].push_back(1);
33 #endif // __APPLE__
34 }
35 
36 } // namespace llvm::orc
37