https://github.com/HemangGadhavi created https://github.com/llvm/llvm-project/pull/142586
This PR is in reference to porting LLDB on AIX. Link to discussions on llvm discourse and github: 1. https://discourse.llvm.org/t/port-lldb-to-ibm-aix/80640 2. https://github.com/llvm/llvm-project/issues/101657 The complete changes for porting are present in this draft PR: https://github.com/llvm/llvm-project/pull/102601 - Added changes to getProcFile() with threadID with testcase for AIX. - Added support for AIX to get_threadid() from llvm. @labath @DhruvSrivastavaX >From f556dd52d71cdc3598cd27ab233e034e6355f539 Mon Sep 17 00:00:00 2001 From: HemangGadhavi <hemang.gadh...@ibm.com> Date: Tue, 3 Jun 2025 06:00:17 -0500 Subject: [PATCH] [lldb][llvm][AIX] Added support for getProcFile with TID --- lldb/include/lldb/Host/aix/Support.h | 23 ++++++++++++++++++++++ lldb/source/Host/CMakeLists.txt | 1 + lldb/source/Host/aix/Support.cpp | 24 +++++++++++++++++++++++ lldb/unittests/Host/posix/SupportTest.cpp | 9 +++++++++ llvm/lib/Support/Unix/Threading.inc | 2 ++ 5 files changed, 59 insertions(+) create mode 100644 lldb/include/lldb/Host/aix/Support.h create mode 100644 lldb/source/Host/aix/Support.cpp diff --git a/lldb/include/lldb/Host/aix/Support.h b/lldb/include/lldb/Host/aix/Support.h new file mode 100644 index 0000000000000..f02a1904b09fa --- /dev/null +++ b/lldb/include/lldb/Host/aix/Support.h @@ -0,0 +1,23 @@ +//===-- Support.h -----------------------------------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef LLDB_HOST_AIX_SUPPORT_H +#define LLDB_HOST_AIX_SUPPORT_H + +#include "llvm/Support/ErrorOr.h" +#include "llvm/Support/MemoryBuffer.h" +#include <memory> + +namespace lldb_private { + +llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> +getProcFile(::pid_t pid, ::pid_t tid, const llvm::Twine &file); + +} // namespace lldb_private + +#endif // #ifndef LLDB_HOST_AIX_SUPPORT_H diff --git a/lldb/source/Host/CMakeLists.txt b/lldb/source/Host/CMakeLists.txt index 90814b1bed4c8..d19e4edd4cf56 100644 --- a/lldb/source/Host/CMakeLists.txt +++ b/lldb/source/Host/CMakeLists.txt @@ -142,6 +142,7 @@ else() add_host_subdirectory(aix aix/Host.cpp aix/HostInfoAIX.cpp + aix/Support.cpp ) endif() endif() diff --git a/lldb/source/Host/aix/Support.cpp b/lldb/source/Host/aix/Support.cpp new file mode 100644 index 0000000000000..afd975565ff2f --- /dev/null +++ b/lldb/source/Host/aix/Support.cpp @@ -0,0 +1,24 @@ +//===-- Support.cpp -------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include "lldb/Host/aix/Support.h" +#include "lldb/Utility/LLDBLog.h" +#include "lldb/Utility/Log.h" +#include "llvm/Support/MemoryBuffer.h" + +llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> +lldb_private::getProcFile(::pid_t pid, ::pid_t tid, const llvm::Twine &file) { + Log *log = GetLog(LLDBLog::Host); + std::string File = + ("/proc/" + llvm::Twine(pid) + "/lwp/" + llvm::Twine(tid) + "/" + file) + .str(); + auto Ret = llvm::MemoryBuffer::getFileAsStream(File); + if (!Ret) + LLDB_LOG(log, "Failed to open {0}: {1}", File, Ret.getError().message()); + return Ret; +} diff --git a/lldb/unittests/Host/posix/SupportTest.cpp b/lldb/unittests/Host/posix/SupportTest.cpp index f3976db755943..e4d7ba89fece6 100644 --- a/lldb/unittests/Host/posix/SupportTest.cpp +++ b/lldb/unittests/Host/posix/SupportTest.cpp @@ -7,6 +7,7 @@ //===----------------------------------------------------------------------===// #include "lldb/Host/posix/Support.h" +#include "lldb/Host/aix/Support.h" #include "llvm/Support/Threading.h" #include "gtest/gtest.h" @@ -19,3 +20,11 @@ TEST(Support, getProcFile_Pid) { ASSERT_TRUE(*BufferOrError); } #endif // #ifndef __APPLE__ + +#if defined(_AIX) && defined(LLVM_ENABLE_THREADING) +TEST(Support, getProcFile_Tid) { + auto BufferOrError = getProcFile(getpid(), llvm::get_threadid(), "lwpstatus"); + ASSERT_TRUE(BufferOrError); + ASSERT_TRUE(*BufferOrError); +} +#endif // #ifdef _AIX && LLVM_ENABLE_THREADING diff --git a/llvm/lib/Support/Unix/Threading.inc b/llvm/lib/Support/Unix/Threading.inc index 15a5b008604c3..742660d5bea75 100644 --- a/llvm/lib/Support/Unix/Threading.inc +++ b/llvm/lib/Support/Unix/Threading.inc @@ -142,6 +142,8 @@ uint64_t llvm::get_threadid() { return uint64_t(gettid()); #elif defined(__linux__) return uint64_t(syscall(__NR_gettid)); +#elif defined(_AIX) + return uint64_t(thread_self()); #else return uint64_t(pthread_self()); #endif _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
