zra@google.com
3e080d1b34
Review URL: https://codereview.chromium.org//13473010 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@20813 260f80e4-7a28-3924-810f-c04153c831b5
530 lines
17 KiB
C++
530 lines
17 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(TARGET_ARCH_MIPS)
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#include "vm/assembler.h"
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#include "vm/code_generator.h"
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#include "vm/dart_entry.h"
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#include "vm/instructions.h"
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#include "vm/stack_frame.h"
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#include "vm/stub_code.h"
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#define __ assembler->
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namespace dart {
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// Input parameters:
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// RA : return address.
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// SP : address of last argument in argument array.
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// SP + 4*S4 - 4 : address of first argument in argument array.
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// SP + 4*S4 : address of return value.
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// S5 : address of the runtime function to call.
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// S4 : number of arguments to the call.
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void StubCode::GenerateCallToRuntimeStub(Assembler* assembler) {
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const intptr_t isolate_offset = NativeArguments::isolate_offset();
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const intptr_t argc_tag_offset = NativeArguments::argc_tag_offset();
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const intptr_t argv_offset = NativeArguments::argv_offset();
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const intptr_t retval_offset = NativeArguments::retval_offset();
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__ addiu(SP, SP, Immediate(-2 * kWordSize));
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__ sw(RA, Address(SP, 1 * kWordSize));
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__ sw(FP, Address(SP, 0 * kWordSize));
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__ mov(FP, SP);
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// Load current Isolate pointer from Context structure into R0.
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__ lw(A0, FieldAddress(CTX, Context::isolate_offset()));
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// Save exit frame information to enable stack walking as we are about
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// to transition to Dart VM C++ code.
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__ sw(SP, Address(A0, Isolate::top_exit_frame_info_offset()));
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// Save current Context pointer into Isolate structure.
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__ sw(CTX, Address(A0, Isolate::top_context_offset()));
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// Cache Isolate pointer into CTX while executing runtime code.
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__ mov(CTX, A0);
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// Reserve space for arguments and align frame before entering C++ world.
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// NativeArguments are passed in registers.
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ASSERT(sizeof(NativeArguments) == 4 * kWordSize);
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__ ReserveAlignedFrameSpace(0);
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// Pass NativeArguments structure by value and call runtime.
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// Registers A0, A1, A2, and A3 are used.
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ASSERT(isolate_offset == 0 * kWordSize);
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// Set isolate in NativeArgs: A0 already contains CTX.
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// There are no runtime calls to closures, so we do not need to set the tag
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// bits kClosureFunctionBit and kInstanceFunctionBit in argc_tag_.
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ASSERT(argc_tag_offset == 1 * kWordSize);
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__ mov(A1, S4); // Set argc in NativeArguments.
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ASSERT(argv_offset == 2 * kWordSize);
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__ sll(A2, S4, 2);
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__ addu(A2, FP, A2); // Compute argv.
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__ addiu(A2, A2, Immediate(kWordSize)); // Set argv in NativeArguments.
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ASSERT(retval_offset == 3 * kWordSize);
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__ addiu(A3, A2, Immediate(kWordSize)); // Retval is next to 1st argument.
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// Call runtime or redirection via simulator.
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__ jalr(S5);
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// Reset exit frame information in Isolate structure.
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__ sw(ZR, Address(CTX, Isolate::top_exit_frame_info_offset()));
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// Load Context pointer from Isolate structure into A2.
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__ lw(A2, Address(CTX, Isolate::top_context_offset()));
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// Reset Context pointer in Isolate structure.
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__ LoadImmediate(A3, reinterpret_cast<intptr_t>(Object::null()));
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__ sw(A3, Address(CTX, Isolate::top_context_offset()));
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// Cache Context pointer into CTX while executing Dart code.
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__ mov(CTX, A2);
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__ mov(SP, FP);
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__ lw(RA, Address(SP, 1 * kWordSize));
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__ lw(FP, Address(SP, 0 * kWordSize));
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__ addiu(SP, SP, Immediate(2 * kWordSize));
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__ Ret();
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}
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void StubCode::GeneratePrintStopMessageStub(Assembler* assembler) {
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__ Unimplemented("PrintStopMessage stub");
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}
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// Input parameters:
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// RA : return address.
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// SP : address of return value.
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// T5 : address of the native function to call.
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// A2 : address of first argument in argument array.
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// A1 : argc_tag including number of arguments and function kind.
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void StubCode::GenerateCallNativeCFunctionStub(Assembler* assembler) {
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const intptr_t isolate_offset = NativeArguments::isolate_offset();
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const intptr_t argc_tag_offset = NativeArguments::argc_tag_offset();
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const intptr_t argv_offset = NativeArguments::argv_offset();
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const intptr_t retval_offset = NativeArguments::retval_offset();
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__ addiu(SP, SP, Immediate(-2 * kWordSize));
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__ sw(RA, Address(SP, 1 * kWordSize));
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__ sw(FP, Address(SP, 0 * kWordSize));
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__ mov(FP, SP);
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// Load current Isolate pointer from Context structure into A0.
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__ lw(A0, FieldAddress(CTX, Context::isolate_offset()));
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// Save exit frame information to enable stack walking as we are about
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// to transition to native code.
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__ sw(SP, Address(A0, Isolate::top_exit_frame_info_offset()));
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// Save current Context pointer into Isolate structure.
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__ sw(CTX, Address(A0, Isolate::top_context_offset()));
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// Cache Isolate pointer into CTX while executing native code.
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__ mov(CTX, A0);
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// Reserve space for the native arguments structure passed on the stack (the
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// outgoing pointer parameter to the native arguments structure is passed in
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// R0) and align frame before entering the C++ world.
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__ ReserveAlignedFrameSpace(sizeof(NativeArguments));
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// Initialize NativeArguments structure and call native function.
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// Registers A0, A1, A2, and A3 are used.
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ASSERT(isolate_offset == 0 * kWordSize);
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// Set isolate in NativeArgs: A0 already contains CTX.
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// There are no native calls to closures, so we do not need to set the tag
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// bits kClosureFunctionBit and kInstanceFunctionBit in argc_tag_.
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ASSERT(argc_tag_offset == 1 * kWordSize);
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// Set argc in NativeArguments: T1 already contains argc.
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ASSERT(argv_offset == 2 * kWordSize);
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// Set argv in NativeArguments: T2 already contains argv.
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ASSERT(retval_offset == 3 * kWordSize);
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__ addiu(A3, FP, Immediate(2 * kWordSize)); // Set retval in NativeArgs.
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// TODO(regis): Should we pass the structure by value as in runtime calls?
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// It would require changing Dart API for native functions.
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// For now, space is reserved on the stack and we pass a pointer to it.
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__ addiu(SP, SP, Immediate(-4 * kWordSize));
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__ sw(A3, Address(SP, 3 * kWordSize));
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__ sw(A2, Address(SP, 2 * kWordSize));
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__ sw(A1, Address(SP, 1 * kWordSize));
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__ sw(A0, Address(SP, 0 * kWordSize));
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__ mov(A0, SP); // Pass the pointer to the NativeArguments.
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// Call native function or redirection via simulator.
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__ jalr(T5);
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// Reset exit frame information in Isolate structure.
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__ LoadImmediate(A2, 0);
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__ sw(A2, Address(CTX, Isolate::top_exit_frame_info_offset()));
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// Load Context pointer from Isolate structure into R2.
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__ lw(A2, Address(CTX, Isolate::top_context_offset()));
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// Reset Context pointer in Isolate structure.
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__ LoadImmediate(A3, reinterpret_cast<intptr_t>(Object::null()));
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__ sw(A3, Address(CTX, Isolate::top_context_offset()));
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// Cache Context pointer into CTX while executing Dart code.
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__ mov(CTX, A2);
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__ mov(SP, FP);
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__ lw(RA, Address(SP, 1 * kWordSize));
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__ lw(FP, Address(SP, 0 * kWordSize));
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__ addiu(SP, SP, Immediate(2 * kWordSize));
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__ Ret();
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}
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// Input parameters:
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// S4: arguments descriptor array.
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void StubCode::GenerateCallStaticFunctionStub(Assembler* assembler) {
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__ EnterStubFrame();
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// Setup space on stack for return value and preserve arguments descriptor.
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__ LoadImmediate(V0, reinterpret_cast<intptr_t>(Object::null()));
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__ addiu(SP, SP, Immediate(-2 * kWordSize));
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__ sw(S4, Address(SP, 1 * kWordSize));
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__ sw(V0, Address(SP, 0 * kWordSize));
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__ CallRuntime(kPatchStaticCallRuntimeEntry);
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// Get Code object result and restore arguments descriptor array.
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__ lw(V0, Address(SP, 0 * kWordSize));
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__ lw(S4, Address(SP, 1 * kWordSize));
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__ addiu(SP, SP, Immediate(2 * kWordSize));
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// Remove the stub frame as we are about to jump to the dart function.
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__ LeaveStubFrame();
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__ lw(V0, FieldAddress(V0, Code::instructions_offset()));
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__ addiu(V0, V0, Immediate(Instructions::HeaderSize() - kHeapObjectTag));
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__ jr(V0);
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}
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void StubCode::GenerateFixCallersTargetStub(Assembler* assembler) {
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__ Unimplemented("FixCallersTarget stub");
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}
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void StubCode::GenerateInstanceFunctionLookupStub(Assembler* assembler) {
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__ Unimplemented("InstanceFunctionLookup stub");
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}
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void StubCode::GenerateDeoptimizeLazyStub(Assembler* assembler) {
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__ Unimplemented("DeoptimizeLazy stub");
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}
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void StubCode::GenerateDeoptimizeStub(Assembler* assembler) {
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__ Unimplemented("Deoptimize stub");
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}
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void StubCode::GenerateMegamorphicMissStub(Assembler* assembler) {
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__ Unimplemented("MegamorphicMiss stub");
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}
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void StubCode::GenerateAllocateArrayStub(Assembler* assembler) {
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__ Unimplemented("AllocateArray stub");
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}
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void StubCode::GenerateCallClosureFunctionStub(Assembler* assembler) {
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__ Unimplemented("CallClosureFunction stub");
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}
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// Called when invoking Dart code from C++ (VM code).
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// Input parameters:
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// RA : points to return address.
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// A0 : entrypoint of the Dart function to call.
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// A1 : arguments descriptor array.
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// A2 : arguments array.
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// A3 : new context containing the current isolate pointer.
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void StubCode::GenerateInvokeDartCodeStub(Assembler* assembler) {
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// Save frame pointer coming in.
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__ EnterStubFrame();
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// Save new context and C++ ABI callee-saved registers.
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const intptr_t kNewContextOffset =
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-(1 + kAbiPreservedCpuRegCount) * kWordSize;
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__ addiu(SP, SP, Immediate(-(3 + kAbiPreservedCpuRegCount) * kWordSize));
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for (int i = S0; i <= S7; i++) {
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Register r = static_cast<Register>(i);
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__ sw(r, Address(SP, (i - S0 + 3) * kWordSize));
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}
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__ sw(A3, Address(SP, 2 * kWordSize));
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// The new Context structure contains a pointer to the current Isolate
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// structure. Cache the Context pointer in the CTX register so that it is
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// available in generated code and calls to Isolate::Current() need not be
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// done. The assumption is that this register will never be clobbered by
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// compiled or runtime stub code.
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// Cache the new Context pointer into CTX while executing Dart code.
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__ lw(CTX, Address(A3, VMHandles::kOffsetOfRawPtrInHandle));
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// Load Isolate pointer from Context structure into temporary register R8.
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__ lw(T2, FieldAddress(CTX, Context::isolate_offset()));
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// Save the top exit frame info. Use R5 as a temporary register.
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// StackFrameIterator reads the top exit frame info saved in this frame.
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__ lw(S5, Address(T2, Isolate::top_exit_frame_info_offset()));
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__ LoadImmediate(T0, 0);
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__ sw(T0, Address(T2, Isolate::top_exit_frame_info_offset()));
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// Save the old Context pointer. Use S4 as a temporary register.
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// Note that VisitObjectPointers will find this saved Context pointer during
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// GC marking, since it traverses any information between SP and
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// FP - kExitLinkOffsetInEntryFrame.
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// EntryFrame::SavedContext reads the context saved in this frame.
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__ lw(S4, Address(T2, Isolate::top_context_offset()));
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// The constants kSavedContextOffsetInEntryFrame and
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// kExitLinkOffsetInEntryFrame must be kept in sync with the code below.
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__ sw(S5, Address(SP, 1 * kWordSize));
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__ sw(S4, Address(SP, 0 * kWordSize));
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// after the call, The stack pointer is restored to this location.
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// Pushed A3, S0-7, S4, S5 = 11.
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const intptr_t kSavedContextOffsetInEntryFrame = -11 * kWordSize;
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// Load arguments descriptor array into S4, which is passed to Dart code.
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__ lw(S4, Address(A1, VMHandles::kOffsetOfRawPtrInHandle));
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// Load number of arguments into S5.
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__ lw(S5, FieldAddress(S4, ArgumentsDescriptor::count_offset()));
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__ SmiUntag(S5);
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// Compute address of 'arguments array' data area into A2.
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__ lw(A2, Address(A2, VMHandles::kOffsetOfRawPtrInHandle));
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__ addiu(A2, A2, Immediate(Array::data_offset() - kHeapObjectTag));
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// Set up arguments for the Dart call.
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Label push_arguments;
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Label done_push_arguments;
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__ beq(S5, ZR, &done_push_arguments); // check if there are arguments.
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__ LoadImmediate(A1, 0);
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__ Bind(&push_arguments);
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__ lw(A3, Address(A2));
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__ Push(A3);
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__ addiu(A2, A2, Immediate(kWordSize));
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__ addiu(A1, A1, Immediate(1));
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__ subu(T0, A1, S5);
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__ bltz(T0, &push_arguments);
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__ Bind(&done_push_arguments);
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// Call the Dart code entrypoint.
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__ jalr(A0); // S4 is the arguments descriptor array.
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// Read the saved new Context pointer.
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__ lw(CTX, Address(FP, kNewContextOffset));
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__ lw(CTX, Address(CTX, VMHandles::kOffsetOfRawPtrInHandle));
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// Get rid of arguments pushed on the stack.
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__ addiu(SP, FP, Immediate(kSavedContextOffsetInEntryFrame));
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// Load Isolate pointer from Context structure into CTX. Drop Context.
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__ lw(CTX, FieldAddress(CTX, Context::isolate_offset()));
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// Restore the saved Context pointer into the Isolate structure.
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// Uses S4 as a temporary register for this.
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// Restore the saved top exit frame info back into the Isolate structure.
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// Uses S5 as a temporary register for this.
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__ lw(S4, Address(SP, 0 * kWordSize));
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__ lw(S5, Address(SP, 1 * kWordSize));
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__ sw(S4, Address(CTX, Isolate::top_context_offset()));
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__ sw(S5, Address(CTX, Isolate::top_exit_frame_info_offset()));
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// Restore C++ ABI callee-saved registers.
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for (int i = S0; i <= S7; i++) {
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Register r = static_cast<Register>(i);
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__ lw(r, Address(SP, (i - S0 + 3) * kWordSize));
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}
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__ lw(A3, Address(SP));
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__ addiu(SP, SP, Immediate((3 + kAbiPreservedCpuRegCount) * kWordSize));
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// Restore the frame pointer and return.
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__ LeaveStubFrame();
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__ Ret();
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}
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void StubCode::GenerateAllocateContextStub(Assembler* assembler) {
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__ Unimplemented("AllocateContext stub");
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}
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void StubCode::GenerateUpdateStoreBufferStub(Assembler* assembler) {
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__ Unimplemented("UpdateStoreBuffer stub");
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}
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void StubCode::GenerateAllocationStubForClass(Assembler* assembler,
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const Class& cls) {
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__ Unimplemented("AllocateObject stub");
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}
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void StubCode::GenerateAllocationStubForClosure(Assembler* assembler,
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const Function& func) {
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__ Unimplemented("AllocateClosure stub");
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}
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void StubCode::GenerateCallNoSuchMethodFunctionStub(Assembler* assembler) {
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__ Unimplemented("CallNoSuchMethodFunction stub");
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}
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void StubCode::GenerateOptimizedUsageCounterIncrement(Assembler* assembler) {
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__ Unimplemented("OptimizedUsageCounterIncrement stub");
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}
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void StubCode::GenerateUsageCounterIncrement(Assembler* assembler,
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Register temp_reg) {
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__ Unimplemented("UsageCounterIncrement stub");
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}
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void StubCode::GenerateNArgsCheckInlineCacheStub(Assembler* assembler,
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intptr_t num_args) {
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__ Unimplemented("NArgsCheckInlineCache stub");
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}
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void StubCode::GenerateOneArgCheckInlineCacheStub(Assembler* assembler) {
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__ Unimplemented("GenerateOneArgCheckInlineCacheStub stub");
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}
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void StubCode::GenerateTwoArgsCheckInlineCacheStub(Assembler* assembler) {
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__ Unimplemented("GenerateTwoArgsCheckInlineCacheStub stub");
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}
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void StubCode::GenerateThreeArgsCheckInlineCacheStub(Assembler* assembler) {
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__ Unimplemented("GenerateThreeArgsCheckInlineCacheStub stub");
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}
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void StubCode::GenerateOneArgOptimizedCheckInlineCacheStub(
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Assembler* assembler) {
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GenerateOptimizedUsageCounterIncrement(assembler);
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GenerateNArgsCheckInlineCacheStub(assembler, 1);
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}
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void StubCode::GenerateTwoArgsOptimizedCheckInlineCacheStub(
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Assembler* assembler) {
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GenerateOptimizedUsageCounterIncrement(assembler);
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GenerateNArgsCheckInlineCacheStub(assembler, 2);
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}
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void StubCode::GenerateThreeArgsOptimizedCheckInlineCacheStub(
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Assembler* assembler) {
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GenerateOptimizedUsageCounterIncrement(assembler);
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GenerateNArgsCheckInlineCacheStub(assembler, 3);
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}
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void StubCode::GenerateClosureCallInlineCacheStub(Assembler* assembler) {
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GenerateNArgsCheckInlineCacheStub(assembler, 1);
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}
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void StubCode::GenerateMegamorphicCallStub(Assembler* assembler) {
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GenerateNArgsCheckInlineCacheStub(assembler, 1);
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}
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void StubCode::GenerateBreakpointStaticStub(Assembler* assembler) {
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__ Unimplemented("BreakpointStatic stub");
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}
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void StubCode::GenerateBreakpointReturnStub(Assembler* assembler) {
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__ Unimplemented("BreakpointReturn stub");
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}
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void StubCode::GenerateBreakpointDynamicStub(Assembler* assembler) {
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__ Unimplemented("BreakpointDynamic stub");
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}
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|
|
|
|
|
void StubCode::GenerateSubtype1TestCacheStub(Assembler* assembler) {
|
|
__ Unimplemented("Subtype1TestCache Stub");
|
|
}
|
|
|
|
|
|
void StubCode::GenerateSubtype2TestCacheStub(Assembler* assembler) {
|
|
__ Unimplemented("Subtype2TestCache Stub");
|
|
}
|
|
|
|
|
|
void StubCode::GenerateSubtype3TestCacheStub(Assembler* assembler) {
|
|
__ Unimplemented("Subtype3TestCache Stub");
|
|
}
|
|
|
|
|
|
// Return the current stack pointer address, used to stack alignment
|
|
// checks.
|
|
void StubCode::GenerateGetStackPointerStub(Assembler* assembler) {
|
|
__ Unimplemented("GetStackPointer Stub");
|
|
}
|
|
|
|
|
|
// Jump to the exception handler.
|
|
// No Result.
|
|
void StubCode::GenerateJumpToExceptionHandlerStub(Assembler* assembler) {
|
|
__ Unimplemented("JumpToExceptionHandler Stub");
|
|
}
|
|
|
|
|
|
// Jump to the error handler.
|
|
// No Result.
|
|
void StubCode::GenerateJumpToErrorHandlerStub(Assembler* assembler) {
|
|
__ Unimplemented("JumpToErrorHandler Stub");
|
|
}
|
|
|
|
|
|
void StubCode::GenerateEqualityWithNullArgStub(Assembler* assembler) {
|
|
__ Unimplemented("EqualityWithNullArg stub");
|
|
}
|
|
|
|
|
|
void StubCode::GenerateOptimizeFunctionStub(Assembler* assembler) {
|
|
__ Unimplemented("OptimizeFunction stub");
|
|
}
|
|
|
|
|
|
void StubCode::GenerateIdenticalWithNumberCheckStub(Assembler* assembler) {
|
|
__ Unimplemented("IdenticalWithNumberCheck stub");
|
|
}
|
|
|
|
} // namespace dart
|
|
|
|
#endif // defined TARGET_ARCH_MIPS
|