* Store CpuRegister on a single byte
* Store operation sizes (0, 1, 2, 4) on a single byte
* Share the (disp) and (imm) fields of instruction arguments
* Store instructions as char[12] instead of std::string (>32B)
* Store instruction args in Argument[2], not std::vector (>24B)
Size changes:
CpuRegister: 4B -> 1B
Argument: 24B -> 8B
Instruction: >64B -> 32B
This reduced the malloc size from 3.3M to 177k after a standard 40-line
disassembly (this excludes OS files mapped to memory), and improved the
loading time for the SH3 instruction table by about 30% (100 ms -> 65
ms).
This finally makes it possible to disassemble any interval without
worrying about potential errors. That's some progress.
By the way, now we can fully disassemble fx@3.10. Takes about 6 seconds
for the analysis passes, and ~9 seconds for printing on my machine.
-> The cfg pass loads the function into memory, annotates leaders and
jumps, and resolves delay slots.
-> The pcrel pass currently computes locations for pc-relative moves and
jumps, but does not yet compute the pc-relative moved data.
-> The print pass displays the results of analysis with various layout
and formatting options.
-> The Library class handles the loading and parsing of data files. This
is because any fxos application will use this since everyone will
have only one library.
-> Add a logging function that automatically format()s everything in
sight with basic logging levels and a verbose mode. Standard logs are
prefixed with __func__ for debugging purposes.
-> Allow format() to take std::string arguments for %s by statically
extracting c_str()s.
-> Add a simple timing utility to understand which file load or
disassembler pass takes up the time.
* Separate OS and Target conceptually; now an OS is created on an
existing target which must have ROM bound.
* Add a configuration file with a data library and description files
which are automatically loaded at startup.
* As a first application, implement target descriptions. It is now
possible (given the proper library) to type [fxos info fx@3.10] to get
information on the fx OS version 3.10.
* Set up the pass infrastructure and the first few easy passes. This
is still a Work In Progress and not yet called from the command-line.
* Improve the copy/move behavior of classes (C++ concerns).
* Add instruction metadata, which will make it easier to write actual
useful analysis passes.
Lephenixnoir