This revision was automatically updated to reflect the committed changes.
Closed by commit rGdbfdb139f754: [lldb] [POSIX-DYLD] Update the cached exe path
after attach (authored by mgorny).
Herald added a project: LLDB.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D92264/new/
https://reviews.llvm.org/D92264
Files:
lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.cpp
lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.h
lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
lldb/test/API/commands/process/attach/TestProcessAttach.py
lldb/test/API/commands/process/attach/main.cpp
Index: lldb/test/API/commands/process/attach/main.cpp
===================================================================
--- lldb/test/API/commands/process/attach/main.cpp
+++ lldb/test/API/commands/process/attach/main.cpp
@@ -3,6 +3,8 @@
#include <chrono>
#include <thread>
+volatile int g_val = 12345;
+
int main(int argc, char const *argv[]) {
int temp;
lldb_enable_attach();
Index: lldb/test/API/commands/process/attach/TestProcessAttach.py
===================================================================
--- lldb/test/API/commands/process/attach/TestProcessAttach.py
+++ lldb/test/API/commands/process/attach/TestProcessAttach.py
@@ -20,6 +20,13 @@
NO_DEBUG_INFO_TESTCASE = True
+ def setUp(self):
+ # Call super's setUp().
+ TestBase.setUp(self)
+ # Find the line number to break for main.c.
+ self.line = line_number('main.cpp',
+ '// Waiting to be attached...')
+
@skipIfiOSSimulator
def test_attach_to_process_by_id(self):
"""Test attach by process id"""
@@ -77,6 +84,28 @@
process = target.GetProcess()
self.assertTrue(process, PROCESS_IS_VALID)
+ def test_attach_to_process_by_id_correct_executable_offset(self):
+ """
+ Test that after attaching to a process the executable offset
+ is determined correctly on FreeBSD. This is a regression test
+ for dyld plugin getting the correct executable path,
+ and therefore being able to identify it in the module list.
+ """
+
+ self.build()
+ exe = self.getBuildArtifact(exe_name)
+
+ # In order to reproduce, we must spawn using a relative path
+ popen = self.spawnSubprocess(os.path.relpath(exe))
+
+ self.runCmd("process attach -p " + str(popen.pid))
+
+ # Make suer we did not attach to early
+ lldbutil.run_break_set_by_file_and_line(
+ self, "main.cpp", self.line, num_expected_locations=1, loc_exact=False)
+ self.runCmd("process continue")
+ self.expect("p g_val", substrs=["$0 = 12345"])
+
def tearDown(self):
# Destroy process before TestBase.tearDown()
self.dbg.GetSelectedTarget().GetProcess().Destroy()
Index: lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
===================================================================
--- lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
+++ lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
@@ -102,6 +102,7 @@
ModuleSP executable_sp = GetTargetExecutable();
ResolveExecutableModule(executable_sp);
+ m_rendezvous.UpdateExecutablePath();
// find the main process load offset
addr_t load_offset = ComputeLoadOffset();
Index: lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.h
===================================================================
--- lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.h
+++ lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.h
@@ -60,6 +60,9 @@
DYLDRendezvous(lldb_private::Process *process);
+ /// Update the cached executable path.
+ void UpdateExecutablePath();
+
/// Update the internal snapshot of runtime linker rendezvous and recompute
/// the currently loaded modules.
///
Index: lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.cpp
===================================================================
--- lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.cpp
+++ lldb/source/Plugins/DynamicLoader/POSIX-DYLD/DYLDRendezvous.cpp
@@ -94,12 +94,13 @@
: m_process(process), m_rendezvous_addr(LLDB_INVALID_ADDRESS), m_current(),
m_previous(), m_loaded_modules(), m_soentries(), m_added_soentries(),
m_removed_soentries() {
- Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
-
m_thread_info.valid = false;
+ UpdateExecutablePath();
+}
- // Cache a copy of the executable path
+void DYLDRendezvous::UpdateExecutablePath() {
if (m_process) {
+ Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
Module *exe_mod = m_process->GetTarget().GetExecutableModulePointer();
if (exe_mod) {
m_exe_file_spec = exe_mod->GetPlatformFileSpec();
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