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Work on Ahead-Of-Time compiler for PVM

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This commit is contained in:
Simon Robertshaw 2012-09-24 14:08:39 +01:00
parent 2ddbd57677
commit cfb8df0830
2 changed files with 220 additions and 1 deletions
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212
src/pim/Machine.cpp
View File

@ -412,6 +412,218 @@ namespace pim
//std::cout << "CS: " << callStack << " PS: " << programStack << std::endl; //std::cout << "CS: " << callStack << " PS: " << programStack << std::endl;
} }
void VirtualMachine::Compile()
{
while(programCounter < romSize)
{
Word argument = rom[programCounter].Parameter;
switch(rom[programCounter].Opcode)
{
case Opcode::Load:
emit("83 EF 04"); //sub edi 4
//Load value at base stack + offset into eax
emit("8B 85"); //mov eax [ebp+ram+offset]
emit((int) (ram - argument.Integer));
//Store value in eax onto top of program stack
emit("89 07"); //mov [edi], eax
emit((int) (ram));
break;
case Opcode::Store:
//Load value on top of the program stack into eax
emit("8B 07"); //mov eax [edi]
emit((int) (ram));
//Load value in eax onto top of program stack
emit("89 85"); //mov [ebp+ram+offset], eax
emit((int) (ram - argument.Integer));
emit("83 C7 04"); //add edi 4
break;
case Opcode::Constant:
emit("83 EF 04"); //sub edi 4
emit("C7 07"); //mov [edi] constant
emit((int) (argument.Integer));
break;
case Opcode::Increment:
emit("81 07"); //add [edi] constant
emit((int) (argument.Integer));
break;
case Opcode::Discard:
emit("83 C7 04"); //add edi 4
break;
case Opcode::Duplicate:
//Copy value on stack into register
emit("8B 07"); //mov eax [edi]
//Adjust program stack pointer
emit("83 EF 04"); //sub edi 4
//Move value in eax into program stack
emit("89 07"); //mov [edi], eax
break;
case Opcode::Add:
emit("8B 07"); //mov eax [edi]
emit("01 47 04"); //add [edi+4] eax
emit("83 C7 04"); //add edi 4
break;
case Opcode::Subtract:
emit("8B 07"); //mov eax [edi]
emit("29 47 04"); //sub [edi+4] eax
emit("83 C7 04"); //add edi 4
break;
case Opcode::Multiply:
emit("8B 47 04"); //mov eax [edi+4]
emit("F7 2F"); //imul [edi]
emit("89 47 04"); //mov [edi+4] eax
emit("83 C7 04"); //add edi 4
break;
case Opcode::Divide:
emit("8B 47 04");//mov eax [edi+4]
emit("99"); //cdq
emit("F7 3F"); //idiv [edi]
emit("89 47 04"); //mov [edi+4] eax
emit("83 C7 04"); //add edi 4
break;
case Opcode::Modulus:
emit("8B 47 04"); // mov eax [edi+4]
emit("99"); // cdq
emit("F7 3F"); // idiv [edi]
emit("89 57 04"); // mov [edi+4] edx
emit("83 C7 04"); //add edi 4
break;
case Opcode::Negate:
emit("F7 1F"); //neg [edi]
break;
case Opcode::Create:
//temp1 = PSPop();
//temp2 = PSPop();
//temp3 = PSPop();
//PSPush(sim->create_part(PSPop().Integer, temp3.Integer, temp2.Integer, temp1.Integer));
break;
case Opcode::Transform:
//PSPop();
//PSPop();
//PSPush((Word)-1);
break;
case Opcode::Get:
//temp1 = PSPop();
//temp2 = PSPop();
//if(temp1.Integer < 0 || temp1.Integer >= YRES || temp2.Integer < 0 || temp2.Integer >= XRES || !(temp = sim->pmap[temp1.Integer][temp2.Integer]))
//{
// PSPush(-1);
// break;
//}
//PSPush(temp>>8);
break;
case Opcode::Position:
//temp1 = PSPop();
//if(temp1.Integer < 0 || temp1.Integer >= NPART || !sim->parts[temp1.Integer].type)
//{
// PSPush(-1);
// PSPush(-1);
// break;
//}
//PSPush((int)sim->parts[temp1.Integer].x);
//PSPush((int)sim->parts[temp1.Integer].y);
break;
case Opcode::Kill:
//sim->kill_part(PSPop().Integer);
//PSPush((Word)0);
break;
case Opcode::LoadProperty:
//PSPush(PPROP(PSPop().Integer, argument.Integer));
break;
case Opcode::StoreProperty:
//temp1 = PSPop();
//PPROP(temp1.Integer, argument.Integer) = PSPop();
break;
case Opcode::JumpEqual:
emit("83 C7 04"); //add edi 8
emit("8B 47 FC"); //mov eax, dword ptr [edi-4]
emit("3B 47 F7"); //cmp eax, dword ptr [edi-8]
emit("75 06"); //jne +6
emit("FF 25"); //jmp [0x12345678]
emit(0);
break;
case Opcode::JumpNotEqual:
emit("83 C7 04"); //add edi 8
emit("8B 47 FC"); //mov eax, dword ptr [edi-4]
emit("3B 47 F7"); //cmp eax, dword ptr [edi-8]
emit("74 06"); //je +6
emit("FF 25"); //jmp [0x12345678]
emit(0);
break;
case Opcode::JumpGreater:
emit("83 C7 04"); //add edi 8
emit("8B 47 FC"); //mov eax, dword ptr [edi-4]
emit("3B 47 F7"); //cmp eax, dword ptr [edi-8]
emit("7E 06"); //jng +6
emit("FF 25"); //jmp [0x12345678]
emit(0);
break;
case Opcode::JumpGreaterEqual:
emit("83 C7 04"); //add edi 8
emit("8B 47 FC"); //mov eax, dword ptr [edi-4]
emit("3B 47 F7"); //cmp eax, dword ptr [edi-8]
emit("7C 06"); //jnge +6
emit("FF 25"); //jmp [0x12345678]
emit(0);
break;
case Opcode::JumpLess:
emit("83 C7 04"); //add edi 8
emit("8B 47 FC"); //mov eax, dword ptr [edi-4]
emit("3B 47 F7"); //cmp eax, dword ptr [edi-8]
emit("7D 06"); //jnl +6
emit("FF 25"); //jmp [0x12345678]
emit(0);
break;
case Opcode::JumpLessEqual:
emit("83 C7 04"); //add edi 8
emit("8B 47 FC"); //mov eax, dword ptr [edi-4]
emit("3B 47 F7"); //cmp eax, dword ptr [edi-8]
emit("7F 06"); //jnle +6
emit("FF 25"); //jmp [0x12345678]
emit(0);
break;
case Opcode::Jump:
//programCounter = argument.Integer-1;
break;
case Opcode::Return:
emit("81 C6"); //add esi constant
emit(argument.Integer);
break;
case Opcode::LocalEnter:
emit("81 EE"); //sub esi constant
emit(argument.Integer);
break;
}
//std::cout << programStack << std::endl;
programCounter++;
}
//std::cout << "CS: " << callStack << " PS: " << programStack << std::endl;
}
void VirtualMachine::emit(std::string opcode)
{
}
void VirtualMachine::emit(int constant)
{
}
void VirtualMachine::CallCompiled(std::string entryPoint)
{
}
void VirtualMachine::CallCompiled(int entryPoint)
{
}
void VirtualMachine::Call(std::string entryPoint) void VirtualMachine::Call(std::string entryPoint)
{ {

9
src/pim/Machine.h
View File

@ -59,6 +59,9 @@ namespace pim
int romSize; int romSize;
int romMask; int romMask;
unsigned char * compiledRom;
int compiledRomSize;
unsigned char * ram; unsigned char * ram;
int ramSize; int ramSize;
int ramMask; int ramMask;
@ -76,12 +79,16 @@ namespace pim
int programCounter; int programCounter;
void emit(std::string opcode);
void emit(int constant);
public: public:
VirtualMachine(Simulation * sim); VirtualMachine(Simulation * sim);
int OpcodeArgSize(int opcode); int OpcodeArgSize(int opcode);
void LoadProgram(std::vector<unsigned char> programData); void LoadProgram(std::vector<unsigned char> programData);
void Run(); void Run();
void Compile();
void CallCompiled(std::string entryPoint);
void CallCompiled(int entryPoint);
void Call(std::string entryPoint); void Call(std::string entryPoint);
void Call(int entryPoint); void Call(int entryPoint);
inline void PSPush(Word word) inline void PSPush(Word word)