1/*
2 * Copyright (C) 2016-2017 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 "WasmCallee.h"
28
29#if ENABLE(WEBASSEMBLY)
30
31#include "LLIntThunks.h"
32#include "WasmCalleeRegistry.h"
33#include "WasmCallingConvention.h"
34
35namespace JSC { namespace Wasm {
36
37Callee::Callee(Wasm::CompilationMode compilationMode)
38 : m_compilationMode(compilationMode)
39{
40 CalleeRegistry::singleton().registerCallee(this);
41}
42
43Callee::Callee(Wasm::CompilationMode compilationMode, size_t index, std::pair<const Name*, RefPtr<NameSection>>&& name)
44 : m_compilationMode(compilationMode)
45 , m_indexOrName(index, WTFMove(name))
46{
47 CalleeRegistry::singleton().registerCallee(this);
48}
49
50Callee::~Callee()
51{
52 CalleeRegistry::singleton().unregisterCallee(this);
53}
54
55void Callee::dump(PrintStream& out) const
56{
57 out.print(makeString(m_indexOrName));
58}
59
60JITCallee::JITCallee(Wasm::CompilationMode compilationMode, Entrypoint&& entrypoint)
61 : Callee(compilationMode)
62 , m_entrypoint(WTFMove(entrypoint))
63{
64}
65
66JITCallee::JITCallee(Wasm::CompilationMode compilationMode, Entrypoint&& entrypoint, size_t index, std::pair<const Name*, RefPtr<NameSection>>&& name, Vector<UnlinkedWasmToWasmCall>&& unlinkedCalls)
67 : Callee(compilationMode, index, WTFMove(name))
68 , m_wasmToWasmCallsites(WTFMove(unlinkedCalls))
69 , m_entrypoint(WTFMove(entrypoint))
70{
71}
72
73void LLIntCallee::setEntrypoint(MacroAssemblerCodePtr<WasmEntryPtrTag> entrypoint)
74{
75 m_entrypoint = entrypoint;
76}
77
78MacroAssemblerCodePtr<WasmEntryPtrTag> LLIntCallee::entrypoint() const
79{
80 return m_entrypoint;
81}
82
83RegisterAtOffsetList* LLIntCallee::calleeSaveRegisters()
84{
85 static LazyNeverDestroyed<RegisterAtOffsetList> calleeSaveRegisters;
86 static std::once_flag initializeFlag;
87 std::call_once(initializeFlag, [] {
88 RegisterSet registers;
89 registers.set(GPRInfo::regCS0); // Wasm::Instance
90#if CPU(X86_64)
91 registers.set(GPRInfo::regCS2); // PB
92#elif CPU(ARM64)
93 registers.set(GPRInfo::regCS7); // PB
94#else
95#error Unsupported architecture.
96#endif
97 registers.set(GPRInfo::regCS3); // Memory base
98 registers.set(GPRInfo::regCS4); // Memory size
99 ASSERT(registers.numberOfSetRegisters() == numberOfLLIntCalleeSaveRegisters);
100 calleeSaveRegisters.construct(WTFMove(registers));
101 });
102 return &calleeSaveRegisters.get();
103}
104
105std::tuple<void*, void*> LLIntCallee::range() const
106{
107 return { nullptr, nullptr };
108}
109
110} } // namespace JSC::Wasm
111
112#endif // ENABLE(WEBASSEMBLY)
113