This commit contains the final changes requires for porting all C code
to Rust and from emscripten to llvm:
- tools/wasm-patch-indirect-function-table.js: A script that rewrites
the wasm generated by llvm to remove the table limit
- tools/rust-lld-wrapper: A wrapper around rust-lld that removes
arguments forced by rustc that break compilation for us
- src/rust/cpu2/Makefile: A monstrosity to postprocess c2rust's output
- gen/generate_interpreter.js: Ported to produce Rust instead of C
- src/rust/*: A few functions and macros to connect the old Rust code
and the new Rust code
- src/*.js: Removes the loading of the old emscripten wasm module and
adapts imports and exports from emscripten to llvm
The following files and functions were ported:
- jit.c
- codegen.c
- _jit functions in instructions*.c and misc_instr.c
- generate_{analyzer,jit}.js (produces Rust code)
- jit_* from cpu.c
And the following data structures:
- hot_code_addresses
- wasm_table_index_free_list
- entry_points
- jit_cache_array
- page_first_jit_cache_entry
Other miscellaneous changes:
- Page is an abstract type
- Addresses, locals and bitflags are unsigned
- Make the number of entry points a growable type
- Avoid use of global state wherever possible
- Delete string packing
- Make CachedStateFlags abstract
- Make AnalysisType product type
- Make BasicBlockType product type
- Restore opcode assertion
- Set opt-level=2 in debug mode (for test performance)
- Delete JIT_ALWAYS instrumentation (now possible via api)
- Refactor generate_analyzer.js
- Refactor generate_jit.js
