jasonmolenda created this revision.
jasonmolenda added a reviewer: jingham.
jasonmolenda added a project: LLDB.
Herald added a subscriber: JDevlieghere.
Herald added a project: All.
jasonmolenda requested review of this revision.
Herald added a subscriber: lldb-commits.
I handle two types of binary specification in qProcessInfo -- the
`main-binary-{uuid,address,slide}` and `binary-addresses` -- so the remote stub
can tell lldb to discover/load binaries when we connect.
I did this loading in `ProcessGDBRemote::DoConnectRemote()` which is very early
in process setup, e.g. we don't have threads yet. This caused problems for one
group that has a python script in the dSYM and need a more fully set up process.
This patch moves this binary loading from `DoConnectRemote()` to
`DidLaunchOrAttach()` where we're nearly done setting up the Process. There's
a method, `MaybeLoadExecutableModule` which reads the load address of the main
binary from the remote stub (maybge on linux or something) and sets the load
address in the Target; I added my new `LoadStubBinaries()` method next to that
one in `DidLaunchOrAttach()`. I originally thought to simply add the code to
`MaybeLoadExecutableModule` but then the method was doing two completely
unrelated things and it would only serve to confuse people in the future I
think.
I don't know of a particularly good reviewer on this one, but I'll add Jim
without thinking of a better choice offhand.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D141972
Files:
lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
Index: lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
===================================================================
--- lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
+++ lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
@@ -374,6 +374,7 @@
bool UpdateThreadIDList();
void DidLaunchOrAttach(ArchSpec &process_arch);
+ void LoadStubBinaries();
void MaybeLoadExecutableModule();
Status ConnectToDebugserver(llvm::StringRef host_port);
Index: lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
===================================================================
--- lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
+++ lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
@@ -555,58 +555,6 @@
}
}
- // The remote stub may know about the "main binary" in
- // the context of a firmware debug session, and can
- // give us a UUID and an address/slide of where the
- // binary is loaded in memory.
- UUID standalone_uuid;
- addr_t standalone_value;
- bool standalone_value_is_offset;
- if (m_gdb_comm.GetProcessStandaloneBinary(
- standalone_uuid, standalone_value, standalone_value_is_offset)) {
- ModuleSP module_sp;
-
- if (standalone_uuid.IsValid()) {
- const bool force_symbol_search = true;
- const bool notify = true;
- DynamicLoader::LoadBinaryWithUUIDAndAddress(
- this, llvm::StringRef(), standalone_uuid, standalone_value,
- standalone_value_is_offset, force_symbol_search, notify);
- }
- }
-
- // The remote stub may know about a list of binaries to
- // force load into the process -- a firmware type situation
- // where multiple binaries are present in virtual memory,
- // and we are only given the addresses of the binaries.
- // Not intended for use with userland debugging when we
- // a DynamicLoader plugin that knows how to find the loaded
- // binaries and will track updates as binaries are added.
-
- std::vector<addr_t> bin_addrs = m_gdb_comm.GetProcessStandaloneBinaries();
- if (bin_addrs.size()) {
- UUID uuid;
- const bool value_is_slide = false;
- for (addr_t addr : bin_addrs) {
- const bool notify = true;
- // First see if this is a special platform
- // binary that may determine the DynamicLoader and
- // Platform to be used in this Process/Target in the
- // process of loading it.
- if (GetTarget()
- .GetDebugger()
- .GetPlatformList()
- .LoadPlatformBinaryAndSetup(this, addr, notify))
- continue;
-
- const bool force_symbol_search = true;
- // Second manually load this binary into the Target.
- DynamicLoader::LoadBinaryWithUUIDAndAddress(
- this, llvm::StringRef(), uuid, addr, value_is_slide,
- force_symbol_search, notify);
- }
- }
-
const StateType state = SetThreadStopInfo(response);
if (state != eStateInvalid) {
SetPrivateState(state);
@@ -1007,6 +955,7 @@
}
}
+ LoadStubBinaries();
MaybeLoadExecutableModule();
// Find out which StructuredDataPlugins are supported by the debug monitor.
@@ -1028,6 +977,60 @@
}
}
+void ProcessGDBRemote::LoadStubBinaries() {
+ // The remote stub may know about the "main binary" in
+ // the context of a firmware debug session, and can
+ // give us a UUID and an address/slide of where the
+ // binary is loaded in memory.
+ UUID standalone_uuid;
+ addr_t standalone_value;
+ bool standalone_value_is_offset;
+ if (m_gdb_comm.GetProcessStandaloneBinary(standalone_uuid, standalone_value,
+ standalone_value_is_offset)) {
+ ModuleSP module_sp;
+
+ if (standalone_uuid.IsValid()) {
+ const bool force_symbol_search = true;
+ const bool notify = true;
+ DynamicLoader::LoadBinaryWithUUIDAndAddress(
+ this, llvm::StringRef(), standalone_uuid, standalone_value,
+ standalone_value_is_offset, force_symbol_search, notify);
+ }
+ }
+
+ // The remote stub may know about a list of binaries to
+ // force load into the process -- a firmware type situation
+ // where multiple binaries are present in virtual memory,
+ // and we are only given the addresses of the binaries.
+ // Not intended for use with userland debugging when we
+ // a DynamicLoader plugin that knows how to find the loaded
+ // binaries and will track updates as binaries are added.
+
+ std::vector<addr_t> bin_addrs = m_gdb_comm.GetProcessStandaloneBinaries();
+ if (bin_addrs.size()) {
+ UUID uuid;
+ const bool value_is_slide = false;
+ for (addr_t addr : bin_addrs) {
+ const bool notify = true;
+ // First see if this is a special platform
+ // binary that may determine the DynamicLoader and
+ // Platform to be used in this Process/Target in the
+ // process of loading it.
+ if (GetTarget()
+ .GetDebugger()
+ .GetPlatformList()
+ .LoadPlatformBinaryAndSetup(this, addr, notify))
+ continue;
+
+ const bool force_symbol_search = true;
+ // Second manually load this binary into the Target.
+ DynamicLoader::LoadBinaryWithUUIDAndAddress(this, llvm::StringRef(), uuid,
+ addr, value_is_slide,
+ force_symbol_search, notify);
+ }
+ }
+}
+
void ProcessGDBRemote::MaybeLoadExecutableModule() {
ModuleSP module_sp = GetTarget().GetExecutableModule();
if (!module_sp)
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