This removes one the last remnants of the SourceMod 1.0 VM implementation.
The new parser introduces a number of design changes in the VM. First, the VM now takes greater responsibility for validating and sanity checking the structure of the SMX container format. Previously, malformed SMX files could easily crash SourcePawn. The loader now rejects files that have out-of-bounds offsets or incomplete sections. Complex sections, like debug info or the code stream, are verified lazily.
Internally, the sp_plugin_t structure has been removed. It has been replaced by a new LegacyImage class, designed to be independent from the SPVM API. This potentially lets us load code streams from non-.smx containers. More importantly, it removes a lot of bookkeeping and pre-computed state from PluginRuntime. The LegacyImage class is now responsible for handling debug info as well.
PluginRuntime is now intended to hold only cached or immutable data, and PluginContext holds all VM state. As such PluginContext is now responsible for allocating a plugin's runtime memory, not PluginRuntime.
Finally, some aspects of the loading process have been cleaned up. The
decompression and image handoff logic should now be easier to
understand.
The tracker related opcodes:
GENARRAY
GENARRAY_Z
TRACKER_POP_SETHEAP
TRACKER_PUSH_C
All contain some vastly overcomplicated assembly containing logic that could
be implemented much easier in C++. If it were a performance concern, these
opcodes would be entirely in C++, but most of them call out to one or more
routines to do additional work. This patch just moves most of the logic out
to C++ to reduce complexity and fix reported bugs.
--HG--
extra : rebase_source : 1397056ac3ca3efb969e66ec577e2b33ca725e1a
1) JIT compilation/optimization now occurs per-function, and only when functions are first used. We're now officially a whole-method JIT rather than an AOT compiler (albiet, still a simple JIT). This has two implications: Functions are now much better abstracted internally, and loading a plugin is now much less expensive. If a function contains calls to other functions, THOSE functions are only compiled when they're invoked as well.
2) I've removed debug mode. We always show full backtraces now, as there was a very cheap way to implement this which really cleaned up everything. This is great for a number of reasons -- there's less code, the JIT is better designed, we don't need to relocate debug tables, and best of all we no longer have to tell users to enable debug mode at their own expense.
--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%402459
NOTE: the JIT is now embeddable out-of-box and usable by other projects which is pretty cool. I will commit a shell app demonstrating this soon
--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%402400
Various minor things done to project files
Updated sample extension project file and updated makefile to the new unified version (more changes likely on the way)
Updated regex project file and makefile
--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401971
