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This commit is contained in:
Andre Wagner
2026-04-29 09:45:55 -05:00
parent d8130272a0
commit 766032e839
7 changed files with 86 additions and 60 deletions
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52
src/bytecode/bytearray.cc
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@@ -14,14 +14,23 @@ void ByteArray::set_byte(uint32_t addr, uint8_t byte)
}
}
void ByteArray::set_int(uint32_t addr, int32_t value)
void ByteArray::set_int8(uint32_t addr, int8_t value)
{
uint32_t zz = ((uint32_t)(value << 1)) ^ ((uint32_t)(value >> 31));
while (zz > 0x7F) {
set_byte(addr++, (zz & 0x7F) | 0x80);
zz >>= 7;
}
set_byte(addr, zz & 0x7F);
set_byte(addr, (uint8_t) value);
}
void ByteArray::set_int16(uint32_t addr, int16_t value)
{
set_byte(addr, (uint8_t) (value));
set_byte(addr+1, (uint8_t) (value >> 8));
}
void ByteArray::set_int32(uint32_t addr, int32_t value)
{
set_byte(addr, (uint8_t) (value));
set_byte(addr+1, (uint8_t) (value >> 8));
set_byte(addr+2, (uint8_t) (value >> 16));
set_byte(addr+3, (uint8_t) (value >> 24));
}
void ByteArray::set_uint16(uint32_t addr, uint16_t value)
@@ -80,20 +89,23 @@ uint32_t ByteArray::get_uint32(uint32_t addr) const
| (uint32_t) get_byte(addr+3) << 24;
}
std::pair<int32_t, size_t> ByteArray::get_int(uint32_t addr) const
int8_t ByteArray::get_int8(uint32_t addr) const
{
uint32_t zz = 0;
int shift = 0;
for (size_t i = 0; shift < 35; i++) {
uint8_t byte = get_byte(addr++);
zz |= (uint32_t)(byte & 0x7F) << shift;
if (!(byte & 0x80)) {
int32_t value = (int32_t)((zz >> 1) ^ -(zz & 1));
return std::make_pair(value, (int)(i + 1));
}
shift += 7;
}
throw BytecodeParsingError("Error parsing int32 at position " + std::to_string(addr));
return std::bit_cast<int8_t>(get_byte(addr));
}
int16_t ByteArray::get_int16(uint32_t addr) const
{
return (uint16_t) get_byte(addr)
| (uint16_t) get_byte(addr+1) << 8;
}
int32_t ByteArray::get_int32(uint32_t addr) const
{
return std::bit_cast<int32_t>((uint32_t) get_byte(addr)
| (uint32_t) get_byte(addr+1) << 8
| (uint32_t) get_byte(addr+2) << 16
| (uint32_t) get_byte(addr+3) << 24);
}
float ByteArray::get_float(uint32_t addr) const