static bool
ValidateSimdType(JSContext *cx, AsmJSModule::Global &global, HandleValue globalVal,
MutableHandleValue out)
{
RootedValue v(cx);
if (!GetDataProperty(cx, globalVal, cx->names().SIMD, &v))
return false;
AsmJSSimdType type;
if (global.which() == AsmJSModule::Global::SimdCtor)
type = global.simdCtorType();
else
type = global.simdOperationType();
RootedPropertyName simdTypeName(cx, SimdTypeToName(cx, type));
if (!GetDataProperty(cx, v, simdTypeName, &v))
return false;
if (!v.isObject())
return LinkFail(cx, "bad SIMD type");
RootedObject simdDesc(cx, &v.toObject());
if (!simdDesc->is<SimdTypeDescr>())
return LinkFail(cx, "bad SIMD type");
if (AsmJSSimdTypeToTypeDescrType(type) != simdDesc->as<SimdTypeDescr>().type())
return LinkFail(cx, "bad SIMD type");
out.set(v);
return true;
}
static bool
ValidateSimdOperation(JSContext *cx, AsmJSModule::Global &global, HandleValue globalVal)
{
// SIMD operations are loaded from the SIMD type, so the type must have been
// validated before the operation.
RootedValue v(cx);
JS_ALWAYS_TRUE(ValidateSimdType(cx, global, globalVal, &v));
RootedPropertyName opName(cx, global.simdOperationName());
if (!GetDataProperty(cx, v, opName, &v))
return false;
Native native = nullptr;
switch (global.simdOperationType()) {
#define SET_NATIVE_INT32X4(op) case AsmJSSimdOperation_##op: native = simd_int32x4_##op; break;
#define SET_NATIVE_FLOAT32X4(op) case AsmJSSimdOperation_##op: native = simd_float32x4_##op; break;
#define FALLTHROUGH(op) case AsmJSSimdOperation_##op:
case AsmJSSimdType_int32x4:
switch (global.simdOperation()) {
FOREACH_INT32X4_SIMD_OP(SET_NATIVE_INT32X4)
FOREACH_COMMONX4_SIMD_OP(SET_NATIVE_INT32X4)
FOREACH_FLOAT32X4_SIMD_OP(FALLTHROUGH)
MOZ_MAKE_COMPILER_ASSUME_IS_UNREACHABLE("shouldn't have been validated in the first "
"place");
}
break;
case AsmJSSimdType_float32x4:
switch (global.simdOperation()) {
FOREACH_FLOAT32X4_SIMD_OP(SET_NATIVE_FLOAT32X4)
FOREACH_COMMONX4_SIMD_OP(SET_NATIVE_FLOAT32X4)
FOREACH_INT32X4_SIMD_OP(FALLTHROUGH)
MOZ_MAKE_COMPILER_ASSUME_IS_UNREACHABLE("shouldn't have been validated in the first "
"place");
}
break;
#undef FALLTHROUGH
#undef SET_NATIVE_FLOAT32X4
#undef SET_NATIVE_INT32X4
#undef SET_NATIVE
}
if (!native || !IsNativeFunction(v, native))
return LinkFail(cx, "bad SIMD.type.* operation");
return true;
}