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a2acd59d73
Both ARM and ARM64 variants did not account for the fact that TransitionNativeToGenerated will clobber LR on slow path. TEST=tests/ffi/regress_jump_to_frame_test.dart Cq-Include-Trybots: luci.dart.try:vm-ffi-android-release-arm-try,vm-ffi-android-release-arm64-try,vm-kernel-linux-release-simarm64-try,vm-kernel-linux-release-simarm-try,vm-kernel-precomp-linux-release-simarm-try,vm-kernel-precomp-linux-release-simarm64-try Change-Id: I40d48b720b2a7f31ff20903a887295ab2034662c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/173962 Commit-Queue: Vyacheslav Egorov <vegorov@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
// Copyright (c) 2011, 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_ARM)
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#include "vm/runtime_entry.h"
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#include "vm/simulator.h"
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#include "vm/stub_code.h"
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#if !defined(DART_PRECOMPILED_RUNTIME)
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#include "vm/compiler/assembler/assembler.h"
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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namespace dart {
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#define __ assembler->
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uword RuntimeEntry::GetEntryPoint() const {
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// Compute the effective address. When running under the simulator,
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// this is a redirection address that forces the simulator to call
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// into the runtime system.
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uword entry = reinterpret_cast<uword>(function());
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#if defined(USING_SIMULATOR)
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// Redirection to leaf runtime calls supports a maximum of 4 arguments passed
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// in registers (maximum 2 double arguments for leaf float runtime calls).
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ASSERT(argument_count() >= 0);
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ASSERT(!is_leaf() || (!is_float() && (argument_count() <= 4)) ||
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(argument_count() <= 2));
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Simulator::CallKind call_kind =
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is_leaf() ? (is_float() ? Simulator::kLeafFloatRuntimeCall
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: Simulator::kLeafRuntimeCall)
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: Simulator::kRuntimeCall;
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entry =
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Simulator::RedirectExternalReference(entry, call_kind, argument_count());
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#endif
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return entry;
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}
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#if !defined(DART_PRECOMPILED_RUNTIME)
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// Generate code to call into the stub which will call the runtime
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// function. Input for the stub is as follows:
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// SP : points to the arguments and return value array.
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// R9 : address of the runtime function to call.
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// R4 : number of arguments to the call.
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void RuntimeEntry::CallInternal(const RuntimeEntry* runtime_entry,
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compiler::Assembler* assembler,
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intptr_t argument_count) {
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if (runtime_entry->is_leaf()) {
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ASSERT(argument_count == runtime_entry->argument_count());
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__ LoadFromOffset(
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TMP, THR, compiler::target::Thread::OffsetFromThread(runtime_entry));
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__ str(TMP,
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compiler::Address(THR, compiler::target::Thread::vm_tag_offset()));
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__ blx(TMP);
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__ LoadImmediate(TMP, VMTag::kDartTagId);
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__ str(TMP,
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compiler::Address(THR, compiler::target::Thread::vm_tag_offset()));
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COMPILE_ASSERT(IsAbiPreservedRegister(THR));
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COMPILE_ASSERT(IsAbiPreservedRegister(PP));
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} else {
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// Argument count is not checked here, but in the runtime entry for a more
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// informative error message.
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__ LoadFromOffset(
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R9, THR, compiler::target::Thread::OffsetFromThread(runtime_entry));
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__ LoadImmediate(R4, argument_count);
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__ BranchLinkToRuntime();
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}
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}
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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} // namespace dart
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#endif // defined TARGET_ARCH_ARM
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