#ifndef CommonSlowPaths_h
#define CommonSlowPaths_h
#include "CodeBlock.h"
#include "CodeSpecializationKind.h"
#include "ExceptionHelpers.h"
#include "JSStackInlines.h"
#include "NameInstance.h"
#include "StackAlignment.h"
#include "VM.h"
#include <wtf/StdLibExtras.h>
namespace JSC {
namespace CommonSlowPaths {
struct ArityCheckData {
unsigned paddedStackSpace;
void* thunkToCall;
void* returnPC;
};
ALWAYS_INLINE int arityCheckFor(ExecState* exec, JSStack* stack, CodeSpecializationKind kind)
{
JSFunction* callee = jsCast<JSFunction*>(exec->callee());
ASSERT(!callee->isHostFunction());
CodeBlock* newCodeBlock = callee->jsExecutable()->codeBlockFor(kind);
int argumentCountIncludingThis = exec->argumentCountIncludingThis();
ASSERT(argumentCountIncludingThis < newCodeBlock->numParameters());
int missingArgumentCount = newCodeBlock->numParameters() - argumentCountIncludingThis;
int neededStackSpace = missingArgumentCount + 1; int paddedStackSpace = WTF::roundUpToMultipleOf(stackAlignmentRegisters(), neededStackSpace);
if (!stack->ensureCapacityFor(exec->registers() - paddedStackSpace))
return -1;
return paddedStackSpace / stackAlignmentRegisters();
}
inline bool opIn(ExecState* exec, JSValue propName, JSValue baseVal)
{
if (!baseVal.isObject()) {
exec->vm().throwException(exec, createInvalidParameterError(exec, "in", baseVal));
return false;
}
JSObject* baseObj = asObject(baseVal);
uint32_t i;
if (propName.getUInt32(i))
return baseObj->hasProperty(exec, i);
if (isName(propName))
return baseObj->hasProperty(exec, jsCast<NameInstance*>(propName.asCell())->privateName());
Identifier property(exec, propName.toString(exec)->value(exec));
if (exec->vm().exception())
return false;
return baseObj->hasProperty(exec, property);
}
}
class ExecState;
struct Instruction;
#if USE(JSVALUE64)
struct SlowPathReturnType {
void* a;
void* b;
};
inline SlowPathReturnType encodeResult(void* a, void* b)
{
SlowPathReturnType result;
result.a = a;
result.b = b;
return result;
}
inline void decodeResult(SlowPathReturnType result, void*& a, void*& b)
{
a = result.a;
b = result.b;
}
#else // USE(JSVALUE32_64)
typedef int64_t SlowPathReturnType;
typedef union {
struct {
void* a;
void* b;
} pair;
int64_t i;
} SlowPathReturnTypeEncoding;
inline SlowPathReturnType encodeResult(void* a, void* b)
{
SlowPathReturnTypeEncoding u;
u.pair.a = a;
u.pair.b = b;
return u.i;
}
inline void decodeResult(SlowPathReturnType result, void*& a, void*& b)
{
SlowPathReturnTypeEncoding u;
u.i = result;
a = u.pair.a;
b = u.pair.b;
}
#endif // USE(JSVALUE32_64)
#define SLOW_PATH
#define SLOW_PATH_DECL(name) \
extern "C" SlowPathReturnType SLOW_PATH name(ExecState* exec, Instruction* pc)
#define SLOW_PATH_HIDDEN_DECL(name) \
SLOW_PATH_DECL(name) WTF_INTERNAL
SLOW_PATH_HIDDEN_DECL(slow_path_call_arityCheck);
SLOW_PATH_HIDDEN_DECL(slow_path_construct_arityCheck);
SLOW_PATH_HIDDEN_DECL(slow_path_touch_entry);
SLOW_PATH_HIDDEN_DECL(slow_path_create_arguments);
SLOW_PATH_HIDDEN_DECL(slow_path_create_this);
SLOW_PATH_HIDDEN_DECL(slow_path_enter);
SLOW_PATH_HIDDEN_DECL(slow_path_get_callee);
SLOW_PATH_HIDDEN_DECL(slow_path_to_this);
SLOW_PATH_HIDDEN_DECL(slow_path_captured_mov);
SLOW_PATH_HIDDEN_DECL(slow_path_new_captured_func);
SLOW_PATH_HIDDEN_DECL(slow_path_not);
SLOW_PATH_HIDDEN_DECL(slow_path_eq);
SLOW_PATH_HIDDEN_DECL(slow_path_neq);
SLOW_PATH_HIDDEN_DECL(slow_path_stricteq);
SLOW_PATH_HIDDEN_DECL(slow_path_nstricteq);
SLOW_PATH_HIDDEN_DECL(slow_path_less);
SLOW_PATH_HIDDEN_DECL(slow_path_lesseq);
SLOW_PATH_HIDDEN_DECL(slow_path_greater);
SLOW_PATH_HIDDEN_DECL(slow_path_greatereq);
SLOW_PATH_HIDDEN_DECL(slow_path_inc);
SLOW_PATH_HIDDEN_DECL(slow_path_dec);
SLOW_PATH_HIDDEN_DECL(slow_path_to_number);
SLOW_PATH_HIDDEN_DECL(slow_path_negate);
SLOW_PATH_HIDDEN_DECL(slow_path_add);
SLOW_PATH_HIDDEN_DECL(slow_path_mul);
SLOW_PATH_HIDDEN_DECL(slow_path_sub);
SLOW_PATH_HIDDEN_DECL(slow_path_div);
SLOW_PATH_HIDDEN_DECL(slow_path_mod);
SLOW_PATH_HIDDEN_DECL(slow_path_lshift);
SLOW_PATH_HIDDEN_DECL(slow_path_rshift);
SLOW_PATH_HIDDEN_DECL(slow_path_urshift);
SLOW_PATH_HIDDEN_DECL(slow_path_unsigned);
SLOW_PATH_HIDDEN_DECL(slow_path_bitand);
SLOW_PATH_HIDDEN_DECL(slow_path_bitor);
SLOW_PATH_HIDDEN_DECL(slow_path_bitxor);
SLOW_PATH_HIDDEN_DECL(slow_path_typeof);
SLOW_PATH_HIDDEN_DECL(slow_path_is_object);
SLOW_PATH_HIDDEN_DECL(slow_path_is_function);
SLOW_PATH_HIDDEN_DECL(slow_path_in);
SLOW_PATH_HIDDEN_DECL(slow_path_del_by_val);
SLOW_PATH_HIDDEN_DECL(slow_path_strcat);
SLOW_PATH_HIDDEN_DECL(slow_path_to_primitive);
}
#endif // CommonSlowPaths_h