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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "jsapi-tests/testsJit.h"
#include "jit/JitCommon.h"
#include "jit/Linker.h"
#include "jit/MacroAssembler-inl.h"
// On entry to the JIT code, save every register.
void PrepareJit(js::jit::MacroAssembler& masm) {
using namespace js::jit;
#if defined(JS_CODEGEN_ARM64)
masm.Mov(PseudoStackPointer64, sp);
masm.SetStackPointer64(PseudoStackPointer64);
#endif
AllocatableRegisterSet regs(RegisterSet::All());
LiveRegisterSet save(regs.asLiveSet());
#if defined(JS_CODEGEN_ARM)
save.add(js::jit::d15);
#endif
#if defined(JS_CODEGEN_MIPS32) || defined(JS_CODEGEN_MIPS64) || \
defined(JS_CODEGEN_LOONG64) || defined(JS_CODEGEN_RISCV64)
save.add(js::jit::ra);
#elif defined(JS_USE_LINK_REGISTER)
save.add(js::jit::lr);
#endif
masm.PushRegsInMask(save);
}
// Generate the exit path of the JIT code, which restores every register. Then,
// make it executable and run it.
bool ExecuteJit(JSContext* cx, js::jit::MacroAssembler& masm) {
using namespace js::jit;
AllocatableRegisterSet regs(RegisterSet::All());
LiveRegisterSet save(regs.asLiveSet());
#if defined(JS_CODEGEN_ARM)
save.add(js::jit::d15);
#endif
#if defined(JS_CODEGEN_MIPS32) || defined(JS_CODEGEN_MIPS64) || \
defined(JS_CODEGEN_LOONG64) || defined(JS_CODEGEN_RISCV64)
save.add(js::jit::ra);
#elif defined(JS_USE_LINK_REGISTER)
save.add(js::jit::lr);
#endif
masm.PopRegsInMask(save);
#if defined(JS_CODEGEN_ARM64)
// Return using the value popped into x30.
masm.abiret();
// Reset stack pointer.
masm.SetStackPointer64(PseudoStackPointer64);
#else
// Exit the JIT-ed code using the ABI return style.
masm.abiret();
#endif
if (masm.oom()) {
return false;
}
JitCode* code = nullptr;
{
Linker linker(masm);
code = linker.newCode(cx, CodeKind::Other);
if (!code) {
return false;
}
}
JS::AutoSuppressGCAnalysis suppress;
EnterTest test = code->as<EnterTest>();
CALL_GENERATED_0(test);
return true;
}
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