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VM basics (#5)

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Co-authored-by: Andre Wagner <WagnerAndre@JohnDeere.com>
Reviewed-on: https://192.168.5.48/andre/tyche/pulls/5
This commit was merged in pull request #5.
This commit is contained in:
Andre Wagner
2026-04-30 13:34:49 -05:00
parent 71390b0f84
commit b835dbb36e
24 changed files with 366 additions and 47 deletions
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46
src/vm/instruction.cc
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@@ -1,6 +1,6 @@
#include "instruction.hh"
namespace tyche {
namespace tyche::vm {
std::pair<std::string, size_t> debug_instruction(Instruction inst, int oper)
{
@@ -98,30 +98,48 @@ std::pair<std::string, size_t> debug_instruction(Instruction inst, int oper)
out = "???";
}
if ((uint8_t) inst < 0xa0)
OperandType operands = instruction_operand_type(inst);
if (operands == OperandType::NoOperand)
return { out, 1 };
out += " " + std::to_string(oper);
if ((uint8_t) inst >= 0xe0)
if (operands == OperandType::Int32)
return { out, 5 };
else if ((uint8_t) inst >= 0xc0)
if (operands == OperandType::Int16)
return { out, 3 };
else
return { out, 2 };
return { out, 2 };
}
std::pair<std::string, size_t> debug_instruction(Bytecode const& bt, uint32_t function_id, uint32_t addr)
std::pair<std::string, size_t> debug_instruction(bc::Bytecode const& bt, uint32_t function_id, uint32_t addr)
{
auto inst = (Instruction) bt.get_code_byte(function_id, addr);
if ((uint8_t) inst >= 0xe0)
return debug_instruction(inst, bt.get_code_int32(function_id, addr + 1));
else if ((uint8_t) inst >= 0xc0)
return debug_instruction(inst, bt.get_code_int16(function_id, addr + 1));
else if ((uint8_t) inst >= 0xa0)
return debug_instruction(inst, bt.get_code_int8(function_id, addr + 1));
switch (instruction_operand_type(inst)) {
case OperandType::NoOperand:
return debug_instruction(inst);
case OperandType::Int8:
return debug_instruction(inst, bt.get_code_int8(function_id, addr + 1));
case OperandType::Int16:
return debug_instruction(inst, bt.get_code_int16(function_id, addr + 1));
case OperandType::Int32:
return debug_instruction(inst, bt.get_code_int32(function_id, addr + 1));
default:
}
return debug_instruction(inst);
return { "???", 1 };
}
OperandType instruction_operand_type(Instruction inst)
{
if ((uint8_t) inst >= 0xe0)
return OperandType::Int32;
if ((uint8_t) inst >= 0xc0)
return OperandType::Int16;
if ((uint8_t) inst >= 0xa0)
return OperandType::Int8;
return OperandType::NoOperand;
}
}