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This commit is contained in:
Kelvin Sherlock
2016-12-25 15:01:00 -05:00
parent a2bc0d353c
commit a8812f9d00
3 changed files with 80 additions and 13 deletions
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77
disassembler.cpp
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@@ -338,6 +338,11 @@ void disassembler::reset() {
_st = 0;
}
void disassembler::dump() {
if (!_st) return;
hexdump();
printf("\tbyte\t");
for (unsigned i = 0; i < _st; ++i) {
@@ -352,6 +357,10 @@ void disassembler::dump() {
void disassembler::dump(const std::string &expr, unsigned size) {
if (_st) dump();
for (_st = 0; _st < size; ++_st) _bytes[_st] = 0;
hexdump();
switch(size) {
case 1: printf("\tbyte\t"); break;
case 2: printf("\tword\t"); break;
@@ -360,24 +369,54 @@ void disassembler::dump(const std::string &expr, unsigned size) {
default: printf("\t%d bytes\t", size);
}
printf("%s\n", expr.c_str());
_pc += _size;
_pc += _st;
reset();
}
void disassembler::code(const std::string &expr, unsigned size) {
if (_st != 1 || size != _size) {
dump(expr, size);
return;
}
print(expr);
}
void disassembler::flush() {
if (_st) dump();
}
void disassembler::data(uint8_t byte) {
if (_type == 0) {
flush();
_type = 1;
}
_bytes[_st++] = byte;
if (_st == 4) dump();
}
void disassembler::data(const std::string &expr, unsigned size) {
if (_type == 0 || _st) {
flush();
_type = 1;
}
dump(expr, size);
}
void disassembler::code(const std::string &expr, unsigned size) {
if (_type) { flush(); _type = 0; }
if (_st != 1 || size != _size) {
dump(expr, size);
return;
}
for(int i = 0; i < size; ++i) _bytes[_st++] = 0;
print(expr);
}
void disassembler::code(uint8_t byte) {
if (_type) { flush(); _type = 0; }
_bytes[_st++] = byte;
if (_st == 1) {
_op = byte;
@@ -460,7 +499,22 @@ void disassembler::print_suffix() {
}
void disassembler::hexdump() {
// print pc and hexdump...
int i;
printf("%04x:", _pc);
for (i = 0; i < _st; ++i) {
printf(" %02x", _bytes[i]);
}
for ( ; i < 4; ++i) {
printf(" ");
}
}
void disassembler::print() {
hexdump();
printf("\t%.3s", &opcodes[_op * 3]);
print_prefix();
@@ -481,6 +535,9 @@ void disassembler::print() {
}
void disassembler::print(const std::string &expr) {
hexdump();
printf("\t%.3s", &opcodes[_op * 3]);
print_prefix();