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Polishing. Alcune implementazioni

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This commit is contained in:
Giulio De Pasquale 2017-05-18 15:41:05 +02:00
parent 8eab267645
commit 020a5062a2
8 changed files with 259 additions and 99 deletions
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137
python/assembler.py → assembler/assembler.py
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@ -59,7 +59,7 @@ class VMAssembler:
self.define_ops(key)
def parse(self, instruction):
action = getattr(self, "op_{}".format(instruction.opcode.name))
action = getattr(self, "{}".format(instruction.opcode.method))
action(instruction)
def process_code_line(self, line):
@ -125,36 +125,66 @@ class VMAssembler:
self.assembled_code += opcode.uint8() + imm.uint16() + reg.uint8()
return
def imm(self, instruction):
def byt2reg(self, instruction):
"""
Intel syntax -> REG, [BYTE]IMM
"""
opcode = instruction.opcode
reg = instruction.args[0]
imm = instruction.args[1]
if reg.name == "ip":
raise IPOverwrite(instruction)
if not imm.isimm():
raise ExpectedImmediate(imm)
if not reg.isreg():
raise ExpectedRegister(reg)
if not opcode.uint8() or not reg.uint8() or not imm.uint8():
raise InvalidValue(instruction)
self.assembled_code += opcode.uint8() + reg.uint8() + imm.uint8()
return
def op_movi(self, instruction):
self.imm2reg(instruction)
def regonly(self, instruction):
"""
Instruction with only an argument: a register
"""
opcode = instruction.opcode
reg = instruction.args[0]
if reg.name == "ip":
raise IPOverwrite(instruction)
if not reg.isreg():
raise ExpectedRegister(reg)
if not opcode.uint8() or not reg.uint8():
raise InvalidValue(instruction)
self.assembled_code += opcode.uint8() + reg.uint8()
return
def op_movr(self, instruction):
self.reg2reg(instruction)
def immonly(self, instruction):
"""
Instruction with only an argument: an immediate
"""
opcode = instruction.opcode
imm = instruction.args[0]
if not imm.isimm():
raise ExpectedImmediate(imm)
if not opcode.uint8() or not imm.uint16():
raise InvalidValue(instruction)
self.assembled_code += opcode.uint8() + imm.uint16()
return
def op_load(self, instruction):
self.imm2reg(instruction)
def op_stor(self, instruction):
self.reg2imm(instruction)
def op_addi(self, instruction):
self.imm2reg(instruction)
def op_addr(self, instruction):
self.reg2reg(instruction)
def single(self, instruction):
"""
Instruction with no arguments
"""
opcode = instruction.opcode
self.assembled_code += opcode.uint8()
return
def define_ops(self, key):
key_ba = bytearray(key, 'utf-8')
olds = copy.deepcopy(ops)
for b in key_ba:
for op_com in ops:
if b % 2:
op_com.set_value(rol(b ^ op_com.value, b % 8, 8))
else:
op_com.set_value(rol(b ^ op_com.value, (b + 1) % 8, 8))
op_com.set_value(rol(b ^ op_com.value, b % 8, 8))
for i in ops:
for j in ops:
j.set_value(rol(j.value, i.value % 8, 8))
@ -167,9 +197,10 @@ class VMComponent:
Represents a register, operation or an immediate the VM recognizes
"""
def __init__(self, name, value):
def __init__(self, name, value, method=None):
self.name = name.casefold()
self.value = value
self.method = method
def __repr__(self):
return "{}".format(self.name)
@ -206,7 +237,7 @@ class VMComponent:
return True
def isop(self):
if self.name not in [x.casefold() for x in op_names]:
if self.name not in [x[0].casefold() for x in op_names]:
return False
return True
@ -240,38 +271,42 @@ class VMInstruction:
def __repr__(self):
return "{} {}".format(self.opcode.name, ", ".join([x.name for x in self.args]))
op_names = ["MOVI",
"MOVR",
"LOAD",
"STOR",
"ADDI",
"ADDR",
"SUBI",
"SUBR",
"XORB",
"XORW",
"XORR",
"NOTR",
"MULI",
"MULR",
"DIVI",
"DIVR",
"PUSH",
"POOP",
"CMPI",
"CMPR",
"JUMP",
"JMPA",
"JMPB",
"JMPE",
"SHIT",
"NOPE",
"GRMN"]
op_names = [["MOVI", "imm2reg"],
["MOVR", "reg2reg"],
["LOAD", "imm2reg"],
["STOR", "reg2imm"],
["ADDI", "imm2reg"],
["ADDR", "reg2reg"],
["SUBI", "imm2reg"],
["SUBR", "reg2reg"],
["XORB", "byt2reg"],
["XORW", "imm2reg"],
["XORR", "reg2reg"],
["NOTR", "regonly"],
["MULI", "imm2reg"],
["MULR", "reg2reg"],
["DIVI", "imm2reg"],
["DIVR", "reg2reg"],
["PUSH", "regonly"],
["POOP", "regonly"],
["CMPI", "imm2reg"],
["CMPR", "reg2reg"],
["JMPI", "immonly"],
["JMPR", "regonly"],
["JPAI", "immonly"],
["JPAR", "regonly"],
["JPBI", "immonly"],
["JPBR", "regonly"],
["JPEI", "immonly"],
["JPER", "regonly"],
["SHIT", "single"],
["NOPE", "single"],
["GRMN", "single"]]
reg_names = ["R0", "R1", "R2", "R3", "S0", "S1", "S2", "S3", "IP", "BP", "SP"]
section_names = ["DATA:", "CODE:", "STACK:"]
section_flags = {s.casefold(): i + 1 for i, s in enumerate(section_names)}
ops = [VMComponent(s.casefold(), i) for i, s in enumerate(op_names)]
ops = [VMComponent(le[0], i, le[1]) for i, le in enumerate(op_names)]
regs = [VMComponent(s.casefold(), i) for i, s in enumerate(reg_names)]

0
cpp/debug.h → vm/debug.h
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0
cpp/emulator.cpp → vm/emulator.cpp
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33
cpp/opcodes.h → vm/opcodes.h
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@ -22,10 +22,14 @@ enum OPS_STARTING_VALUES {
POOP,
CMPI,
CMPR,
JUMP,
JMPA,
JMPB,
JMPE,
JMPI,
JMPR,
JPAI,
JPAR,
JPBI,
JPBR,
JPEI,
JPER,
SHIT,
NOPE,
GRMN,
@ -41,7 +45,8 @@ INSTRUCTION SIZE TYPES
#define IMM2REG 4
#define REG2IMM 4
#define BYT2REG 3
#define UNARY 2
#define REGONLY 2
#define IMMONLY 3
#define SINGLE 1
/*
@ -58,19 +63,23 @@ INSTRUCTION SIZES
#define XORB_SIZE BYT2REG
#define XORW_SIZE IMM2REG
#define XORR_SIZE REG2REG
#define NOTR_SIZE UNARY
#define NOTR_SIZE REGONLY
#define MULI_SIZE IMM2REG
#define MULR_SIZE REG2REG
#define DIVI_SIZE IMM2REG
#define DIVR_SIZE REG2REG
#define PUSH_SIZE UNARY
#define POOP_SIZE UNARY
#define PUSH_SIZE REGONLY
#define POOP_SIZE REGONLY
#define CMPI_SIZE IMM2REG
#define CMPR_SIZE REG2REG
#define JUMP_SIZE UNARY
#define JMPA_SIZE UNARY
#define JMPB_SIZE UNARY
#define JMPE_SIZE UNARY
#define JMPI_SIZE IMMONLY
#define JMPR_SIZE REGONLY
#define JPAI_SIZE IMMONLY
#define JPAR_SIZE REGONLY
#define JPBI_SIZE IMMONLY
#define JPBR_SIZE REGONLY
#define JPEI_SIZE IMMONLY
#define JPER_SIZE REGONLY
#define SHIT_SIZE SINGLE
#define NOPE_SIZE SINGLE
#define GRMN_SIZE SINGLE

176
cpp/vm.cpp → vm/vm.cpp
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@ -14,11 +14,7 @@ void VM::defineOpcodes(uint8_t *key) {
keysize = strlen((char *)key);
for (i = 0; i < keysize; i++) {
for (j = 0; j < NUM_OPS; j++) {
if (key[i] % 2) {
OPS[j] = rol(key[i] ^ OPS[j], key[i] % 8, 8);
} else {
OPS[j] = rol(key[i] ^ OPS[j], (key[i] + 1) % 8, 8);
}
}
}
for (i = 0; i < NUM_OPS; i++) {
@ -185,7 +181,7 @@ bool VM::execMOVI(void) {
bool VM::execMOVR(void) {
/*
MOVR R1, R0 | R1 = R0
MOVR R1, R0 -> R1 = R0
---------------------
R1, R0 = 0x10 <- DST / SRC are nibbles!
*/
@ -203,7 +199,7 @@ bool VM::execMOVR(void) {
bool VM::execLOAD(void) {
/*
LOAD R0, 0x1000 | R0 = data[0x1000]
LOAD R0, 0x1000 -> R0 = data[0x1000]
*/
uint8_t dst;
uint16_t src;
@ -216,7 +212,7 @@ bool VM::execLOAD(void) {
bool VM::execSTOR(void) {
/*
STOR 0x1000, R0 | data[0x1000] = R0
STOR 0x1000, R0 -> data[0x1000] = R0
*/
uint16_t dst;
uint8_t src;
@ -229,7 +225,7 @@ bool VM::execSTOR(void) {
bool VM::execADDI(void) {
/*
ADDI R0, 0x2 | R0 += 2
ADDI R0, 0x2 -> R0 += 2
*/
uint8_t dst;
uint16_t src;
@ -242,6 +238,9 @@ bool VM::execADDI(void) {
}
bool VM::execADDR(void) {
/*
ADDR R0, R1 -> R0 += R1
*/
uint8_t dst;
uint8_t src;
@ -252,24 +251,124 @@ bool VM::execADDR(void) {
return true;
}
bool VM::execSUBI(void) { return true; }
bool VM::execSUBR(void) { return true; }
bool VM::execXORB(void) { return true; }
bool VM::execXORW(void) { return true; }
bool VM::execXORR(void) { return true; }
bool VM::execNOTR(void) { return true; }
bool VM::execMULI(void) { return true; }
bool VM::execSUBI(void) {
/*
SUBI R0, 0x2 -> R0 -= 2
*/
uint8_t dst;
uint16_t src;
dst = as.code[regs[IP] + 1];
src = *((uint16_t *)&as.code[regs[IP] + 2]);
DBG_INFO(("SUBI %s, 0x%x\n", getRegName(dst), src));
regs[dst] -= src;
return true;
}
bool VM::execSUBR(void) {
/*
SUBR R0, R1 -> R0 -= R1
*/
uint8_t dst;
uint8_t src;
dst = as.code[regs[IP] + 1] >> 4;
src = as.code[regs[IP] + 1] & 0b00001111;
DBG_INFO(("SUBR %s, 0x%x\n", getRegName(dst), src));
regs[dst] -= regs[src];
return true;
}
bool VM::execXORB(void) {
/*
XORB R0, 0x2 -> R0 ^= 0x02 or R0 ^= [BYTE] 0x02 (low byte)
*/
uint8_t dst;
uint8_t src;
dst = as.code[regs[IP] + 1];
src = as.code[regs[IP] + 2];
DBG_INFO(("XORB %s, 0x%x\n", getRegName(dst), src));
regs[dst] ^= src;
return true;
}
bool VM::execXORW(void) {
/*
XORW R0, 0x2 -> R0 ^= 0x0002 or R0, ^= [WORD] 0x2
*/
uint8_t dst;
uint16_t src;
dst = as.code[regs[IP] + 1];
src = *((uint16_t *)&as.code[regs[IP] + 2]);
DBG_INFO(("XORW %s, 0x%x\n", getRegName(dst), src));
regs[dst] ^= src;
return true;
}
bool VM::execXORR(void) {
/*
XORR R0, R1 -> R0 ^= R1
*/
uint8_t dst;
uint8_t src;
dst = as.code[regs[IP] + 1] >> 4;
src = as.code[regs[IP] + 1] & 0b00001111;
DBG_INFO(("XORR %s, 0x%x\n", getRegName(dst), src));
regs[dst] ^= regs[src];
return true;
}
bool VM::execNOTR(void) {
/*
NOTR R0, R1 -> R0 = ~R1
*/
uint8_t dst;
uint8_t src;
dst = as.code[regs[IP] + 1] >> 4;
src = as.code[regs[IP] + 1] & 0b00001111;
DBG_INFO(("NOTR %s, 0x%x\n", getRegName(dst), src));
regs[dst] = ~regs[src];
return true;
}
bool VM::execMULI(void) {
/*
MULI R0, 0x2 | R0 *= 2
*/
uint8_t dst;
uint16_t src;
dst = as.code[regs[IP] + 1];
src = *((uint16_t *)&as.code[regs[IP] + 2]);
DBG_INFO(("SUBI %s, 0x%x\n", getRegName(dst), src));
regs[dst] *= src;
return true;
}
bool VM::execMULR(void) { return true; }
bool VM::execDIVI(void) { return true; }
bool VM::execDIVI(void) {
/*
DIVI R0, 0x2 | R0 /= 2
*/
uint8_t dst;
uint16_t src;
dst = as.code[regs[IP] + 1];
src = *((uint16_t *)&as.code[regs[IP] + 2]);
DBG_INFO(("DIVI %s, 0x%x\n", getRegName(dst), src));
regs[dst] /= src;
return true;
}
bool VM::execDIVR(void) { return true; }
bool VM::execPUSH(void) { return true; }
bool VM::execPOOP(void) { return true; }
bool VM::execCMPI(void) { return true; }
bool VM::execCMPR(void) { return true; }
bool VM::execJUMP(void) { return true; }
bool VM::execJMPA(void) { return true; }
bool VM::execJMPB(void) { return true; }
bool VM::execJMPE(void) { return true; }
bool VM::execJMPI(void) { return true; }
bool VM::execJMPR(void) { return true; }
bool VM::execJPAI(void) { return true; }
bool VM::execJPAR(void) { return true; }
bool VM::execJPBI(void) { return true; }
bool VM::execJPBR(void) { return true; }
bool VM::execJPEI(void) { return true; }
bool VM::execJPER(void) { return true; }
bool VM::execGRMN(void) { return true; }
void VM::run(void) {
uint8_t opcode;
@ -333,22 +432,35 @@ void VM::run(void) {
} else if (opcode == OPS[CMPR]) {
execCMPR();
regs[IP] += CMPR_SIZE;
} else if (opcode == OPS[JUMP]) {
execJUMP();
regs[IP] += JUMP_SIZE;
} else if (opcode == OPS[JMPA]) {
execJMPA();
regs[IP] += JMPA_SIZE;
} else if (opcode == OPS[JMPB]) {
execJMPB();
regs[IP] += JMPB_SIZE;
} else if (opcode == OPS[JMPE]) {
execJMPE();
regs[IP] += JMPE_SIZE;
} else if (opcode == OPS[JMPI]) {
execJMPI();
regs[IP] += JMPI_SIZE;
} else if (opcode == OPS[JMPR]) {
execJMPR();
regs[IP] += JMPR_SIZE;
}else if (opcode == OPS[JPAI]) {
execJPAI();
regs[IP] += JPAI_SIZE;
}else if (opcode == OPS[JPAR]) {
execJPAR();
regs[IP] += JPAR_SIZE;
}else if (opcode == OPS[JPBI]) {
execJPBI();
regs[IP] += JPBI_SIZE;
}else if (opcode == OPS[JPBR]) {
execJPBR();
regs[IP] += JPBR_SIZE;
}else if (opcode == OPS[JPEI]) {
execJPEI();
regs[IP] += JPEI_SIZE;
}else if (opcode == OPS[JPER]) {
execJPER();
regs[IP] += JPER_SIZE;
} else if (opcode == OPS[GRMN]) {
execGRMN();
regs[IP] += GRMN_SIZE;
} else if (opcode == OPS[SHIT]) {
DBG_INFO(("Halting.\n"));
finished = true;
} else if (opcode == OPS[NOPE]) {
regs[IP] += NOPE_SIZE;

12
cpp/vm.h → vm/vm.h
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@ -51,10 +51,14 @@ private:
bool execPOOP(void);
bool execCMPI(void);
bool execCMPR(void);
bool execJUMP(void);
bool execJMPA(void);
bool execJMPB(void);
bool execJMPE(void);
bool execJMPI(void);
bool execJMPR(void);
bool execJPAI(void);
bool execJPAR(void);
bool execJPBI(void);
bool execJPBR(void);
bool execJPEI(void);
bool execJPER(void);
bool execGRMN(void);
public:

0
cpp/vmas.cpp → vm/vmas.cpp
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0
cpp/vmas.h → vm/vmas.h
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