From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/jit/riscv64/SharedICHelpers-riscv64-inl.h | 81 ++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 js/src/jit/riscv64/SharedICHelpers-riscv64-inl.h (limited to 'js/src/jit/riscv64/SharedICHelpers-riscv64-inl.h') diff --git a/js/src/jit/riscv64/SharedICHelpers-riscv64-inl.h b/js/src/jit/riscv64/SharedICHelpers-riscv64-inl.h new file mode 100644 index 0000000000..ba70746197 --- /dev/null +++ b/js/src/jit/riscv64/SharedICHelpers-riscv64-inl.h @@ -0,0 +1,81 @@ +/* -*- 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_riscv64_SharedICHelpers_riscv64_inl_h +#define jit_riscv64_SharedICHelpers_riscv64_inl_h + +#include "jit/SharedICHelpers.h" + +namespace js { +namespace jit { + +inline void EmitBaselineTailCallVM(TrampolinePtr target, MacroAssembler& masm, + uint32_t argSize) { +#ifdef DEBUG + Register scratch = R2.scratchReg(); + + // Compute frame size. + masm.movePtr(FramePointer, scratch); + masm.subPtr(StackPointer, scratch); + + // Store frame size without VMFunction arguments for debug assertions. + masm.subPtr(Imm32(argSize), scratch); + Address frameSizeAddr(FramePointer, + BaselineFrame::reverseOffsetOfDebugFrameSize()); + masm.store32(scratch, frameSizeAddr); + masm.addPtr(Imm32(argSize), scratch); +#endif + + // Push frame descriptor and perform the tail call. + masm.pushFrameDescriptor(FrameType::BaselineJS); + + MOZ_ASSERT(ICTailCallReg == ra); + // The return address will be pushed by the VM wrapper, for compatibility + // with direct calls. Refer to the top of generateVMWrapper(). + // ICTailCallReg (ra) 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.movePtr(FramePointer, scratch); + masm.subPtr(StackPointer, scratch); + + Address frameSizeAddr(FramePointer, + BaselineFrame::reverseOffsetOfDebugFrameSize()); + masm.store32(scratch, frameSizeAddr); +#endif + + // Note: when making changes here, don't forget to update + // BaselineStubFrame if needed. + + // Push frame descriptor and return address. + masm.PushFrameDescriptor(FrameType::BaselineJS); + masm.Push(ICTailCallReg); + + // Save old frame pointer, stack pointer and stub reg. + masm.Push(FramePointer); + masm.movePtr(StackPointer, FramePointer); + masm.Push(ICStubReg); + + // Stack should remain aligned. + masm.assertStackAlignment(sizeof(Value), 0); +} + +} // namespace jit +} // namespace js + +#endif /* jit_riscv64_SharedICHelpers_riscv64_inl_h */ -- cgit v1.2.3