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#include <iostream> #include <iomanip> #include <fstream> #include <string> #include <sstream> #include "Assembler.h" using namespace std; Assembler::Assembler() { jumpTable["load"] = &Assembler::load; jumpTable["loadi"] = &Assembler::loadi; jumpTable["store"] = &Assembler::store; jumpTable["add"] = &Assembler::add; jumpTable["addi"] = &Assembler::addi; jumpTable["addc"] = &Assembler::addc; jumpTable["addci"] = &Assembler::addci; jumpTable["sub"] = &Assembler::sub; jumpTable["subi"] = &Assembler::subi; jumpTable["subc"] = &Assembler::subc; jumpTable["subci"] = &Assembler::subci; jumpTable["and"] = &Assembler::and_instr; jumpTable["andi"] = &Assembler::andi; jumpTable["xor"] = &Assembler::xor_instr; jumpTable["xori"] = &Assembler::xori; jumpTable["compl"] = &Assembler::compl_instr; jumpTable["shl"] = &Assembler::shl; jumpTable["shla"] = &Assembler::shla; jumpTable["shr"] = &Assembler::shr; jumpTable["shra"] = &Assembler::shra; jumpTable["compr"] = &Assembler::compr; jumpTable["compri"] = &Assembler::compri; jumpTable["getstat"] = &Assembler::getstat; jumpTable["putstat"] = &Assembler::putstat; jumpTable["jump"] = &Assembler::jump; jumpTable["jumpl"] = &Assembler::jumpl; jumpTable["jumpe"] = &Assembler::jumpe; jumpTable["jumpg"] = &Assembler::jumpg; jumpTable["call"] = &Assembler::call; jumpTable["return"] = &Assembler::return_instr; jumpTable["read"] = &Assembler::read_instr; jumpTable["write"] = &Assembler::write_instr; jumpTable["halt"] = &Assembler::halt; jumpTable["noop"] = &Assembler::noop; } // Assembler int Assembler::assemble(fstream& in, fstream& out) { string line; string opcode; const int success = false; const int error = true; //const int debug = false; int instruction; getline(in, line); while (!in.eof()) { istringstream str(line.c_str()); str >> opcode; if (opcode[0] == '!') { getline(in, line); continue; } try { if (not jumpTable[opcode] ) throw NullPointerException(); else instruction = (this->*jumpTable[opcode])(str); } catch (NullPointerException e) { cerr << e.what() << endl; return error; } if (instruction == -1) return error; out << instruction << endl; getline(in, line); } return success; } // assemble int Assembler::load(istringstream & str) { int rd, addr; str >> rd >> addr; if (rd < 0 || rd > 3) return -1; if (addr < 0 || addr > 255) return -1; int inst=0; inst = inst | rd<<9 | addr; return inst; } int Assembler::loadi(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=0; inst = inst | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::store(istringstream & str) { int rd, addr; str >> rd >> addr; if (rd < 0 || rd > 3) return -1; if (addr < 0 || addr > 255) return -1; int inst=1; inst = inst<<11 | rd<<9 | addr; return inst; } int Assembler::add(istringstream & str) { int rd, rs; str >> rd >> rs; if (rd < 0 || rd > 3) return -1; if (rs < 0 || rs > 3) return -1; int inst=2; inst = inst<<11 | rd<<9 | rs<<6; return inst; } int Assembler::addi(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=2; inst = inst<<11 | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::addc(istringstream & str) { int rd, rs; str >> rd >> rs; if (rd < 0 || rd > 3) return -1; if (rs < 0 || rs > 3) return -1; int inst=3; inst = inst<<11 | rd<<9 | rs<<6; return inst; } int Assembler::addci(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=3; inst = inst<<11 | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::sub(istringstream & str) { int rd, rs; str >> rd >> rs; if (rd < 0 || rd > 3) return -1; if (rs < 0 || rs > 3) return -1; int inst=4; inst = inst<<11 | rd<<9 | rs<<6; return inst; } int Assembler::subi(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=4; inst = inst<<11 | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::subc(istringstream & str) { int rd, rs; str >> rd >> rs; if (rd < 0 || rd > 3) return -1; if (rs < 0 || rs > 3) return -1; int inst=5; inst = inst<<11 | rd<<9 | rs<<6; return inst; } int Assembler::subci(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=5; inst = inst<<11 | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::and_instr(istringstream & str) { int rd, rs; str >> rd >> rs; if (rd < 0 || rd > 3) return -1; if (rs < 0 || rs > 3) return -1; int inst=6; inst = inst<<11 | rd<<9 | rs<<6; return inst; } int Assembler::andi(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=6; inst = inst<<11 | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::xor_instr(istringstream & str) { int rd, rs; str >> rd >> rs; if (rd < 0 || rd > 3) return -1; if (rs < 0 || rs > 3) return -1; int inst=7; inst = inst<<11 | rd<<9 | rs<<6; return inst; } int Assembler::xori(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=7; inst = inst<<11 | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::compl_instr(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=8; inst = inst<<11 | rd<<9; return inst; } int Assembler::shl(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=9; inst = inst<<11 | rd<<9; return inst; } int Assembler::shla(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=10; inst = inst<<11 | rd<<9; return inst; } int Assembler::shr(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=11; inst = inst<<11 | rd<<9; return inst; } int Assembler::shra(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=12; inst = inst<<11 | rd<<9; return inst; } int Assembler::compr(istringstream & str) { int rd, rs; str >> rd >> rs; if (rd < 0 || rd > 3) return -1; if (rs < 0 || rs > 3) return -1; int inst=13; inst = inst<<11 | rd<<9 | rs<<6; return inst; } int Assembler::compri(istringstream & str) { int rd, constant; str >> rd >> constant; if (rd < 0 || rd > 3) return -1; if (constant < -128 || constant > 127) return -1; int inst=13; inst = inst<<11 | rd<<9 | 1<<8 | (0x000000ff & constant); return inst; } int Assembler::getstat(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=14; inst = inst<<11 | rd<<9; return inst; } int Assembler::putstat(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=15; inst = inst<<11 | rd<<9; return inst; } int Assembler::jump(istringstream & str) { int addr; str >> addr; if (addr < 0 || addr > 255) return -1; int inst=16; inst = inst<<11 | addr; return inst; } int Assembler::jumpl(istringstream & str) { int addr; str >> addr; if (addr < 0 || addr > 255) return -1; int inst=17; inst = inst<<11 | addr; return inst; } int Assembler::jumpe(istringstream & str) { int addr; str >> addr; if (addr < 0 || addr > 255) return -1; int inst=18; inst = inst<<11 | addr; return inst; } int Assembler::jumpg(istringstream & str) { int addr; str >> addr; if (addr < 0 || addr > 255) return -1; int inst=19; inst = inst<<11 | addr; return inst; } int Assembler::call(istringstream & str) { int addr; str >> addr; if (addr < 0 || addr > 255) return -1; int inst=20; inst = inst<<11 | addr; return inst; } int Assembler::return_instr(istringstream & str) { int inst=21; inst = inst<<11; return inst; } int Assembler::read_instr(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=22; inst = inst<<11 | rd<<9; return inst; } int Assembler::write_instr(istringstream & str) { int rd; str >> rd; if (rd < 0 || rd > 3) return -1; int inst=23; inst = inst<<11 | rd<<9; return inst; } int Assembler::halt(istringstream & str) { int inst=24; inst = inst<<11; return inst; } int Assembler::noop(istringstream & str) { int inst=25; inst = inst<<11; return inst; }