libasm: cross assemble/disassemble library

The libasm allows assembling and disassembling supported retro CPUs on a small environment (less than 9kB-17kB Flash and 350B RAM on AVR Arduino).

Assembler library interface

Assembling MC68HC11 instruction in string to binary can be done in a minute. You can also add symbol table lookup via SymbolTable interface.

#include <asm_mc6800.h>
libasm::mc6800::AsmMc6800 asm6800;
asm6800.setCpu("68HC11");

const char *text = "SUBD $90";
libasm::Insn insn{0x1000};

asm6800.encode(text, insn);
assert(insn.getError() == OK);
assert(insn.address()  == 0x1000);
assert(insn.length()   == 2);    // direct addressing
assert(insn.bytes()[0] == 0x93); // SUBD
assert(insn.bytes()[1] == 0x90); // $90

Disassembler library interface

To disassemble MC68000 binaries, you need to wrap memory by ArrayMemory or implements your own DisMemory interface to feed binaries. You can also add symbol table lookup via…