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SharedICHelpers-riscv64-inl.h


products/Sources/formale Sprachen/C/Firefox/js/src/jit/riscv64/SharedICHelpers-riscv64-inl.h

/* -*- 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 */