1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "WasmCallingConvention.h"
28
29#if ENABLE(WEBASSEMBLY)
30
31#include <wtf/NeverDestroyed.h>
32
33namespace JSC { namespace Wasm {
34
35const JSCCallingConvention& jscCallingConvention()
36{
37 static LazyNeverDestroyed<JSCCallingConvention> staticJSCCallingConvention;
38 static std::once_flag staticJSCCallingConventionFlag;
39 std::call_once(staticJSCCallingConventionFlag, [] () {
40 staticJSCCallingConvention.construct(Vector<Reg>(), Vector<Reg>(), RegisterSet::calleeSaveRegisters());
41 });
42
43 return staticJSCCallingConvention;
44}
45
46const WasmCallingConvention& wasmCallingConvention()
47{
48 static LazyNeverDestroyed<JSCCallingConvention> staticWasmCallingConvention;
49 static std::once_flag staticWasmCallingConventionFlag;
50 std::call_once(staticWasmCallingConventionFlag, [] () {
51 Vector<Reg> gprArgumentRegisters(GPRInfo::numberOfArgumentRegisters);
52 for (unsigned i = 0; i < GPRInfo::numberOfArgumentRegisters; ++i)
53 gprArgumentRegisters[i] = GPRInfo::toArgumentRegister(i);
54
55 Vector<Reg> fprArgumentRegisters(FPRInfo::numberOfArgumentRegisters);
56 for (unsigned i = 0; i < FPRInfo::numberOfArgumentRegisters; ++i)
57 fprArgumentRegisters[i] = FPRInfo::toArgumentRegister(i);
58
59 staticWasmCallingConvention.construct(WTFMove(gprArgumentRegisters), WTFMove(fprArgumentRegisters), RegisterSet::calleeSaveRegisters());
60 });
61
62 return staticWasmCallingConvention;
63}
64
65const JSCCallingConventionAir& jscCallingConventionAir()
66{
67 static LazyNeverDestroyed<JSCCallingConventionAir> staticJSCCallingConvention;
68 static std::once_flag staticJSCCallingConventionFlag;
69 std::call_once(staticJSCCallingConventionFlag, [] () {
70 staticJSCCallingConvention.construct(Vector<Reg>(), Vector<Reg>(), RegisterSet::calleeSaveRegisters());
71 });
72
73 return staticJSCCallingConvention;
74}
75
76const WasmCallingConventionAir& wasmCallingConventionAir()
77{
78 static LazyNeverDestroyed<WasmCallingConventionAir> staticWasmCallingConvention;
79 static std::once_flag staticWasmCallingConventionFlag;
80 std::call_once(staticWasmCallingConventionFlag, [] () {
81 Vector<Reg> gprArgumentRegisters(GPRInfo::numberOfArgumentRegisters);
82 for (unsigned i = 0; i < GPRInfo::numberOfArgumentRegisters; ++i)
83 gprArgumentRegisters[i] = GPRInfo::toArgumentRegister(i);
84
85 Vector<Reg> fprArgumentRegisters(FPRInfo::numberOfArgumentRegisters);
86 for (unsigned i = 0; i < FPRInfo::numberOfArgumentRegisters; ++i)
87 fprArgumentRegisters[i] = FPRInfo::toArgumentRegister(i);
88
89 staticWasmCallingConvention.construct(WTFMove(gprArgumentRegisters), WTFMove(fprArgumentRegisters), RegisterSet::calleeSaveRegisters());
90 });
91
92 return staticWasmCallingConvention;
93}
94
95} } // namespace JSC::Wasm
96
97#endif // ENABLE(B3_JIT)
98