-/*
- * ScriptRunner.cpp
- *
- * Created on: Oct 13, 2012
- * Author: holy
- */
-
#include "ScriptRunner.h"
#include "Script.h"
: host(0)
, script(0)
, cursor(0)
-, address0(0)
-, address1(0)
-, integer0(0)
-, integer1(0)
-, vector0(0, 0)
-, vector1(0, 0)
, compare(0) {
}
script = &s;
Reset();
while (cursor < script->textlen) {
- unsigned char code(script->text[cursor]);
- ++cursor;
- Exec(code);
+ Exec(PopCode());
}
host = 0;
script = 0;
void ScriptRunner::Reset() {
cursor = 0;
- address0 = 0;
- address1 = 0;
- integer0 = 0;
- integer1 = 0;
- vector0 = Vector<int>(0, 0);
- vector1 = Vector<int>(0, 0);
+ for (int i(0); i < numRegisters; ++i) {
+ address[i] = 0;
+ integer[i] = 0;
+ vector[i] = Vector<int>(0, 0);
+ }
}
-void ScriptRunner::Exec(unsigned char code) {
- switch (code) {
- case Script::CODE_MOVE_A0:
- address0 = PopAddress();
- break;
- case Script::CODE_MOVE_A1:
- address1 = PopAddress();
- break;
- case Script::CODE_MOVE_I0:
- integer0 = PopInt();
- break;
- case Script::CODE_MOVE_I1:
- integer1 = PopInt();
- break;
- case Script::CODE_MOVE_V0:
- vector0 = PopVector();
- break;
- case Script::CODE_MOVE_V1:
- vector1 = PopVector();
- break;
- case Script::CODE_ADD_I0:
- integer0 += PopInt();
+void ScriptRunner::Exec(Script::Code code) {
+ switch (code.command) {
+ case Script::COMMAND_NOOP:
break;
- case Script::CODE_ADD_I1:
- integer1 += PopInt();
- break;
- case Script::CODE_ADD_V0:
- vector0 += PopVector();
- break;
- case Script::CODE_ADD_V1:
- vector1 += PopVector();
- break;
- case Script::CODE_MOD_I0:
- integer0 %= PopInt();
- break;
- case Script::CODE_MOD_I1:
- integer1 %= PopInt();
- break;
- case Script::CODE_RAND_I0:
- integer0 = std::rand();
+
+ case Script::COMMAND_MOVE:
+ if (code.reg1 >= numRegisters) {
+ break;
+ }
+ switch (code.type) {
+ case Script::TYPE_ADDRESS: {
+ void *value(code.reg2 < numRegisters ? address[code.reg2] : PopAddress());
+ address[code.reg1] = value;
+ break;
+ }
+ case Script::TYPE_INTEGER: {
+ int value(code.reg2 < numRegisters ? integer[code.reg2] : PopInt());
+ integer[code.reg1] = value;
+ break;
+ }
+ case Script::TYPE_VECTOR: {
+ Vector<int> value(code.reg2 < numRegisters ? vector[code.reg2] : PopVector());
+ vector[code.reg1] = value;
+ break;
+ }
+ }
break;
- case Script::CODE_RAND_I1:
- integer1 = std::rand();
+
+ case Script::COMMAND_ADD:
+ if (code.reg1 >= numRegisters) {
+ break;
+ }
+ switch (code.type) {
+ case Script::TYPE_INTEGER: {
+ int value(code.reg2 < numRegisters ? integer[code.reg2] : PopInt());
+ integer[code.reg1] += value;
+ break;
+ }
+ case Script::TYPE_VECTOR: {
+ Vector<int> value(code.reg2 < numRegisters ? vector[code.reg2] : PopVector());
+ vector[code.reg1] += value;
+ break;
+ }
+ }
break;
- case Script::CODE_CMP_I0:
- Compare(integer0, PopInt());
+
+ case Script::COMMAND_MOD: {
+ if (code.reg1 >= numRegisters) {
+ break;
+ }
+ int value(code.reg2 < numRegisters ? integer[code.reg2] : PopInt());
+ integer[code.reg1] %= value;
break;
- case Script::CODE_CMP_I1:
- Compare(integer1, PopInt());
+ }
+
+ case Script::COMMAND_RAND:
+ if (code.reg1 >= numRegisters) {
+ break;
+ }
+ integer[code.reg1] = std::rand();
break;
- case Script::CODE_CMP_I0_I1:
- Compare(integer0, integer1);
+
+ case Script::COMMAND_CMP: {
+ int lhs(code.reg1 < numRegisters ? integer[code.reg1] : PopInt());
+ int rhs(code.reg2 < numRegisters ? integer[code.reg2] : PopInt());
+ Compare(lhs, rhs);
break;
- case Script::CODE_JUMP:
+ }
+
+ case Script::COMMAND_JMP:
cursor = PopInt();
break;
- case Script::CODE_JUMP_EQUAL: {
+ case Script::COMMAND_JEQ: {
int addr(PopInt());
if (compare == COMPARE_EQUAL) {
cursor = addr;
}
break;
}
- case Script::CODE_JUMP_NOT_EQUAL: {
+ case Script::COMMAND_JNE: {
int addr(PopInt());
if (compare != COMPARE_EQUAL) {
cursor = addr;
}
break;
}
- case Script::CODE_JUMP_LESS: {
+ case Script::COMMAND_JL: {
int addr(PopInt());
if (compare == COMPARE_LESS) {
cursor = addr;
}
break;
}
- case Script::CODE_JUMP_LESS_EQUAL: {
+ case Script::COMMAND_JLE: {
int addr(PopInt());
if (compare != COMPARE_GREATER) {
cursor = addr;
}
break;
}
- case Script::CODE_JUMP_GREATER: {
+ case Script::COMMAND_JG: {
int addr(PopInt());
if (compare == COMPARE_GREATER) {
cursor = addr;
}
break;
}
- case Script::CODE_JUMP_GREATER_EQUAL: {
+ case Script::COMMAND_JGE: {
int addr(PopInt());
if (compare != COMPARE_LESS) {
cursor = addr;
}
break;
}
- case Script::CODE_SYSCALL:
+ case Script::COMMAND_SYSC:
host->HandleSyscall(*this);
break;
}
}
+Script::Code ScriptRunner::PopCode() {
+ const Script::Code *i(reinterpret_cast<const Script::Code *>(script->text + cursor));
+ cursor += sizeof(Script::Code);
+ return *i;
+}
+
void *ScriptRunner::PopAddress() {
void *const *addr(reinterpret_cast<void *const *>(script->text + cursor));
cursor += sizeof(void *);