#include "config.h"
#include "LLIntThunks.h"
#include "JSCJSValueInlines.h"
#include "JSInterfaceJIT.h"
#include "LLIntCLoop.h"
#include "LLIntData.h"
#include "LinkBuffer.h"
#include "WasmCallingConvention.h"
#include "WasmContextInlines.h"
#include <wtf/NeverDestroyed.h>
namespace JSC {
#if ENABLE(JIT)
namespace LLInt {
static MacroAssemblerCodeRef<JITThunkPtrTag> generateThunkWithJumpTo(OpcodeID opcodeID, const char *thunkKind)
{
JSInterfaceJIT jit;
LLIntCode target = LLInt::getCodeFunctionPtr<JSEntryPtrTag>(opcodeID);
assertIsTaggedWith(target, JSEntryPtrTag);
#if ENABLE(WEBASSEMBLY)
CCallHelpers::RegisterID scratch = Wasm::wasmCallingConvention().prologueScratchGPRs[0];
#else
CCallHelpers::RegisterID scratch = JSInterfaceJIT::regT0;
#endif
jit.move(JSInterfaceJIT::TrustedImmPtr(target), scratch);
jit.farJump(scratch, JSEntryPtrTag);
LinkBuffer patchBuffer(jit, GLOBAL_THUNK_ID);
return FINALIZE_CODE(patchBuffer, JITThunkPtrTag, "LLInt %s prologue thunk", thunkKind);
}
MacroAssemblerCodeRef<JITThunkPtrTag> functionForCallEntryThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
codeRef.construct(generateThunkWithJumpTo(llint_function_for_call_prologue, "function for call"));
});
return codeRef;
}
MacroAssemblerCodeRef<JITThunkPtrTag> functionForConstructEntryThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
codeRef.construct(generateThunkWithJumpTo(llint_function_for_construct_prologue, "function for construct"));
});
return codeRef;
}
MacroAssemblerCodeRef<JITThunkPtrTag> functionForCallArityCheckThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
codeRef.construct(generateThunkWithJumpTo(llint_function_for_call_arity_check, "function for call with arity check"));
});
return codeRef;
}
MacroAssemblerCodeRef<JITThunkPtrTag> functionForConstructArityCheckThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
codeRef.construct(generateThunkWithJumpTo(llint_function_for_construct_arity_check, "function for construct with arity check"));
});
return codeRef;
}
MacroAssemblerCodeRef<JITThunkPtrTag> evalEntryThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
codeRef.construct(generateThunkWithJumpTo(llint_eval_prologue, "eval"));
});
return codeRef;
}
MacroAssemblerCodeRef<JITThunkPtrTag> programEntryThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
codeRef.construct(generateThunkWithJumpTo(llint_program_prologue, "program"));
});
return codeRef;
}
MacroAssemblerCodeRef<JITThunkPtrTag> moduleProgramEntryThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
codeRef.construct(generateThunkWithJumpTo(llint_module_program_prologue, "module_program"));
});
return codeRef;
}
#if ENABLE(WEBASSEMBLY)
MacroAssemblerCodeRef<JITThunkPtrTag> wasmFunctionEntryThunk()
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<JITThunkPtrTag>> codeRef;
static std::once_flag onceKey;
std::call_once(onceKey, [&] {
if (Wasm::Context::useFastTLS())
codeRef.construct(generateThunkWithJumpTo(wasm_function_prologue, "function for call"));
else
codeRef.construct(generateThunkWithJumpTo(wasm_function_prologue_no_tls, "function for call"));
});
return codeRef;
}
#endif // ENABLE(WEBASSEMBLY)
}
#endif
#if ENABLE(C_LOOP)
EncodedJSValue vmEntryToJavaScript(void* executableAddress, VM* vm, ProtoCallFrame* protoCallFrame)
{
JSValue result = CLoop::execute(llint_vm_entry_to_javascript, executableAddress, vm, protoCallFrame);
return JSValue::encode(result);
}
EncodedJSValue vmEntryToNative(void* executableAddress, VM* vm, ProtoCallFrame* protoCallFrame)
{
JSValue result = CLoop::execute(llint_vm_entry_to_native, executableAddress, vm, protoCallFrame);
return JSValue::encode(result);
}
extern "C" VMEntryRecord* vmEntryRecord(EntryFrame* entryFrame)
{
intptr_t stackAlignment = stackAlignmentBytes();
intptr_t VMEntryTotalFrameSize = (sizeof(VMEntryRecord) + (stackAlignment - 1)) & ~(stackAlignment - 1);
return reinterpret_cast<VMEntryRecord*>(reinterpret_cast<char*>(entryFrame) - VMEntryTotalFrameSize);
}
#endif // ENABLE(C_LOOP)
}