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//
//
//
#include "value.hpp"
#include "hir_sim.hpp"
#include "module_tree.hpp"
#include <iostream>
#include <iomanip>
#include <algorithm>
Value::Value()
{
this->meta.direct_data.size = 0;
this->meta.direct_data.mask[0] = 0;
this->meta.direct_data.mask[1] = 0;
}
Value::Value(::HIR::TypeRef ty)
{
size_t size = ty.get_size();
#if 1
if( ty.get_size() <= sizeof(this->meta.direct_data.data) )
{
struct H
{
static bool has_pointer(const ::HIR::TypeRef& ty)
{
if( ty.wrappers.empty() || ::std::all_of(ty.wrappers.begin(), ty.wrappers.end(), [](const auto& x){ return x.type == TypeWrapper::Ty::Array; }) )
{
// Check the inner type
if( ty.inner_type != RawType::Composite )
{
return false;
}
// Still not sure, check the inner for any pointers.
for(const auto& fld : ty.composite_type->fields)
{
if( H::has_pointer(fld.second) )
return true;
}
return false;
}
return true;
}
};
if( ! H::has_pointer(ty) )
{
// Will fit in a inline allocation, nice.
this->meta.direct_data.size = static_cast<uint8_t>(size);
return ;
}
}
#endif
// Fallback: Make a new allocation
throw "TODO";
}
void Value::check_bytes_valid(size_t ofs, size_t size) const
{
if( this->allocation )
{
throw "TODO";
}
else
{
for(size_t i = 0; i < this->meta.direct_data.size; i++)
{
if( !(this->meta.direct_data.mask[i/8] & (1 << i%8)) )
{
throw "ERROR";
}
}
}
}
void Value::mark_bytes_valid(size_t ofs, size_t size)
{
if( this->allocation )
{
throw "TODO";
}
else
{
for(size_t i = 0; i < this->meta.direct_data.size; i++)
{
this->meta.direct_data.mask[i/8] |= (1 << i%8);
}
}
}
Value Value::read_value(size_t ofs, size_t size) const
{
::std::cout << "Value::read_value(" << ofs << ", " << size << ")" << ::std::endl;
check_bytes_valid(ofs, size);
if( this->allocation )
{
throw "TODO";
}
else
{
// Inline can become inline.
Value rv;
rv.meta.direct_data.size = static_cast<uint8_t>(size);
rv.write_bytes(0, this->meta.direct_data.data+ofs, size);
return rv;
}
}
void Value::read_bytes(size_t ofs, void* dst, size_t count) const
{
check_bytes_valid(ofs, count);
throw "TODO";
}
void Value::write_bytes(size_t ofs, const void* src, size_t count)
{
if( this->allocation )
{
throw "TODO";
}
else
{
if(ofs >= this->meta.direct_data.size )
throw "ERROR";
if(count > this->meta.direct_data.size )
throw "ERROR";
if(ofs+count > this->meta.direct_data.size )
throw "ERROR";
::std::memcpy(this->meta.direct_data.data+ofs, src, count);
mark_bytes_valid(ofs, count);
}
}
void Value::write_value(size_t ofs, Value v)
{
if( v.allocation )
{
throw "TODO";
}
else
{
v.check_bytes_valid(0, v.meta.direct_data.size);
write_bytes(ofs, v.meta.direct_data.data, v.meta.direct_data.size);
mark_bytes_valid(ofs, meta.direct_data.size);
}
}
size_t Value::as_usize() const
{
uint64_t v;
this->read_bytes(0, &v, 8);
// TODO: Handle endian
return v;
}
::std::ostream& operator<<(::std::ostream& os, const Value& v)
{
auto flags = os.flags();
os << ::std::hex;
if( v.allocation )
{
throw "TODO";
}
else
{
for(size_t i = 0; i < v.meta.direct_data.size; i++)
{
if( i != 0 )
os << " ";
if( v.meta.direct_data.mask[i/8] & (1 << i%8) )
{
os << ::std::setw(2) << ::std::setfill('0') << (int)v.meta.direct_data.data[i];
}
else
{
os << "--";
}
}
}
os.setf(flags);
return os;
}
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