From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- js/src/jit/arm64/SharedICHelpers-arm64-inl.h | 79 ++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 js/src/jit/arm64/SharedICHelpers-arm64-inl.h (limited to 'js/src/jit/arm64/SharedICHelpers-arm64-inl.h') diff --git a/js/src/jit/arm64/SharedICHelpers-arm64-inl.h b/js/src/jit/arm64/SharedICHelpers-arm64-inl.h new file mode 100644 index 0000000000..8261a8b94f --- /dev/null +++ b/js/src/jit/arm64/SharedICHelpers-arm64-inl.h @@ -0,0 +1,79 @@ +/* -*- 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/. */ + +#ifndef jit_arm64_SharedICHelpers_arm64_inl_h +#define jit_arm64_SharedICHelpers_arm64_inl_h + +#include "jit/BaselineFrame.h" +#include "jit/SharedICHelpers.h" + +#include "jit/MacroAssembler-inl.h" + +namespace js { +namespace jit { + +inline void EmitBaselineTailCallVM(TrampolinePtr target, MacroAssembler& masm, + uint32_t argSize) { +#ifdef DEBUG + // We assume that R0 has been pushed, and R2 is unused. + static_assert(R2 == ValueOperand(r0)); + + // Store frame size without VMFunction arguments for debug assertions. + masm.Sub(x0, FramePointer64, masm.GetStackPointer64()); + masm.Sub(w0, w0, Operand(argSize)); + Address frameSizeAddr(FramePointer, + BaselineFrame::reverseOffsetOfDebugFrameSize()); + masm.store32(w0.asUnsized(), frameSizeAddr); +#endif + + // Push frame descriptor (minus the return address) and perform the tail call. + static_assert(ICTailCallReg == lr); + masm.pushFrameDescriptor(FrameType::BaselineJS); + + // The return address will be pushed by the VM wrapper, for compatibility + // with direct calls. Refer to the top of generateVMWrapper(). + // ICTailCallReg (lr) already contains the return address (as we keep + // it there through the stub calls). + + masm.jump(target); +} + +inline void EmitBaselineCallVM(TrampolinePtr target, MacroAssembler& masm) { + masm.pushFrameDescriptor(FrameType::BaselineStub); + masm.call(target); +} + +inline void EmitBaselineEnterStubFrame(MacroAssembler& masm, Register scratch) { + MOZ_ASSERT(scratch != ICTailCallReg); + +#ifdef DEBUG + // Compute frame size. + masm.Sub(ARMRegister(scratch, 64), FramePointer64, masm.GetStackPointer64()); + + Address frameSizeAddr(FramePointer, + BaselineFrame::reverseOffsetOfDebugFrameSize()); + masm.store32(scratch, frameSizeAddr); +#endif + + // Push frame descriptor and return address. + // Save old frame pointer, stack pointer, and stub reg. + masm.PushFrameDescriptor(FrameType::BaselineJS); + masm.Push(ICTailCallReg); + masm.Push(FramePointer); + + // Update the frame register. + masm.Mov(FramePointer64, masm.GetStackPointer64()); + + masm.Push(ICStubReg); + + // Stack should remain 16-byte aligned. + masm.checkStackAlignment(); +} + +} // namespace jit +} // namespace js + +#endif // jit_arm64_SharedICHelpers_arm64_inl_h -- cgit v1.2.3