B3WasmBoundsCheckValue.cpp [plain text]
#include "config.h"
#include "B3WasmBoundsCheckValue.h"
#include "WasmMemory.h"
#if ENABLE(B3_JIT)
#include "B3ValueInlines.h"
namespace JSC { namespace B3 {
WasmBoundsCheckValue::~WasmBoundsCheckValue()
{
}
WasmBoundsCheckValue::WasmBoundsCheckValue(Origin origin, GPRReg pinnedSize, Value* ptr, unsigned offset)
: Value(CheckedOpcode, WasmBoundsCheck, One, origin, ptr)
, m_offset(offset)
, m_boundsType(Type::Pinned)
{
m_bounds.pinnedSize = pinnedSize;
}
WasmBoundsCheckValue::WasmBoundsCheckValue(Origin origin, Value* ptr, unsigned offset, size_t maximum)
: Value(CheckedOpcode, WasmBoundsCheck, One, origin, ptr)
, m_offset(offset)
, m_boundsType(Type::Maximum)
{
#if ENABLE(WEBASSEMBLY)
size_t redzoneLimit = static_cast<uint64_t>(std::numeric_limits<uint32_t>::max()) + Wasm::Memory::fastMappedRedzoneBytes();
ASSERT_UNUSED(redzoneLimit, maximum <= redzoneLimit);
#endif
m_bounds.maximum = maximum;
}
void WasmBoundsCheckValue::dumpMeta(CommaPrinter& comma, PrintStream& out) const
{
switch (m_boundsType) {
case Type::Pinned:
out.print(comma, "offset = ", m_offset, comma, "pinnedSize = ", m_bounds.pinnedSize);
break;
case Type::Maximum:
out.print(comma, "offset = ", m_offset, comma, "maximum = ", m_bounds.maximum);
break;
}
}
} }
#endif // ENABLE(B3_JIT)