Add a corefile style option to process save-core; skinny corefiles

Add a new feature to process save-core on Darwin systems -- for
lldb to create a user process corefile with only the dirty (modified
memory) pages included.  All of the binaries that were used in the
corefile are assumed to still exist on the system for the duration
of the use of the corefile.  A new --style option to process save-core
is added, so a full corefile can be requested if portability across
systems, or across time, is needed for this corefile.

debugserver can now identify the dirty pages in a memory region
when queried with qMemoryRegionInfo, and the size of vm pages is
given in qHostInfo.

Create a new "all image infos" LC_NOTE for Mach-O which allows us
to describe all of the binaries that were loaded in the process --
load address, UUID, file path, segment load addresses, and optionally
whether code from the binary was executing on any thread.  The old
"read dyld_all_image_infos and then the in-memory Mach-O load
commands to get segment load addresses" no longer works when we
only have dirty memory.

rdar://69670807
Differential Revision: https://reviews.llvm.org/D88387

1 files changed, 2 insertions, 1 deletions

diff --git a/lldb/source/Interpreter/CommandObject.cpp b/lldb/source/Interpreter/CommandObject.cpp
index 09a8b05..a6fba35 100644
--- a/lldb/source/Interpreter/CommandObject.cpp
+++ b/lldb/source/Interpreter/CommandObject.cpp
@@ -1126,7 +1126,8 @@ CommandObject::ArgumentTableEntry CommandObject::g_arguments_data[] = {
     { eArgRawInput, "raw-input", CommandCompletions::eNoCompletion, { nullptr, false }, "Free-form text passed to a command without prior interpretation, allowing spaces without requiring quotes.  To pass arguments and free form text put two dashes ' -- ' between the last argument and any raw input." },
     { eArgTypeCommand, "command", CommandCompletions::eNoCompletion, { nullptr, false }, "An LLDB Command line command." },
     { eArgTypeColumnNum, "column", CommandCompletions::eNoCompletion, { nullptr, false }, "Column number in a source file." },
-    { eArgTypeModuleUUID, "module-uuid", CommandCompletions::eModuleUUIDCompletion, { nullptr, false }, "A module UUID value." }
+    { eArgTypeModuleUUID, "module-uuid", CommandCompletions::eModuleUUIDCompletion, { nullptr, false }, "A module UUID value." },
+    { eArgTypeSaveCoreStyle, "corefile-style", CommandCompletions::eNoCompletion, { nullptr, false }, "The type of corefile that lldb will try to create, dependant on this target's capabilities." }
     // clang-format on
 };