Minidump plugin: Adding ProcessMinidump, ThreadMinidump and register the plugin in SystemInitializerFull

Summary:
This plugin resembles the already existing Windows-only Minidump plugin.
The WinMinidumpPlugin uses the Windows API for parsing Minidumps
while this plugin is cross-platform because it includes a Minidump
parser (which is already commited)

It is able to produce a backtrace, to read the general puprose regiters,
inspect local variables, show image list, do memory reads, etc.

For now the only arches that this supports are x86_32 and x86_64.
This is because I have only written register contexts for those.
Others will come in next CLs.

I copied the WinMinidump tests and adapted them a little bit for them to
work with the new plugin (and they pass)
I will add more tests, aiming for better code coverage.

There is still functionality to be added, see TODOs in code.

Reviewers: labath, zturner

Subscribers: beanz, mgorny, modocache, lldb-commits, amccarth

Differential Revision: https://reviews.llvm.org/D25905

llvm-svn: 285587

lldb/source/API/SystemInitializerFull.cpp

@@ -78,6 +78,7 @@
 #include "Plugins/Platform/gdb-server/PlatformRemoteGDBServer.h"
 #include "Plugins/Process/elf-core/ProcessElfCore.h"
 #include "Plugins/Process/gdb-remote/ProcessGDBRemote.h"
+#include "Plugins/Process/minidump/ProcessMinidump.h"
 #include "Plugins/ScriptInterpreter/None/ScriptInterpreterNone.h"
 #include "Plugins/SymbolFile/DWARF/SymbolFileDWARF.h"
 #include "Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h"
@@ -304,6 +305,7 @@ void SystemInitializerFull::Initialize() {
 
   JITLoaderGDB::Initialize();
   ProcessElfCore::Initialize();
+  minidump::ProcessMinidump::Initialize();
 #if defined(_MSC_VER)
   ProcessWinMiniDump::Initialize();
 #endif
@@ -429,6 +431,7 @@ void SystemInitializerFull::Terminate() {
 
   JITLoaderGDB::Terminate();
   ProcessElfCore::Terminate();
+  minidump::ProcessMinidump::Terminate();
 #if defined(_MSC_VER)
   ProcessWinMiniDump::Terminate();
 #endif