1ea3fd2e13
This reverts commit 7e78506fc2
.
Reason for revert: Broke Android build on Arm64.
Original change's description:
> [Memory] Use OS::Allocate for all OS memory allocations.
>
> - Eliminates OS::ReserveRegion and OS::ReserveAlignedRegion.
> - Changes OS::Allocate to take alignment parameter, reorders parameters
> to match page_allocator.
> - Since the size of memory allocation can be deduced, don't return the
> amount of memory allocated.
> - Changes reservation of aligned address space. Before we would reserve
> (size + alignment) rounded up to page size. This is too much, because
> maximum misalignment is (alignment - page_size).
> - On Windows and Cygwin, we release an oversize allocation and
> immediately retry at the aligned address in the allocation. If we
> lose the address due to a race, we just retry.
> - Clean up all the calls to OS::Allocate in codegen and tests by adding
> helper AllocateSystemPage function (allocation.h) and
> AllocateAssemblerBuffer (cctest.h).
> - Changes 'assm' to 'masm' in some targets for consistency when using
> a macro-assembler.
>
> Bug: chromium:756050
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> Change-Id: I306dbe042cc867670fdc935abca29db074b0da71
> Reviewed-on: https://chromium-review.googlesource.com/749848
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49235}
TBR=bbudge@chromium.org,hpayer@chromium.org,mlippautz@chromium.org
Change-Id: Ic09de4d63c19746a62e804b1f889817ffaebc330
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:756050
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/758625
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49242}
167 lines
5.4 KiB
C++
167 lines
5.4 KiB
C++
// Copyright 2013 the V8 project authors. All rights reserved.
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// Rrdistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Rrdistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Rrdistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include "src/assembler-inl.h"
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#include "src/base/platform/platform.h"
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#include "src/code-stubs.h"
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#include "src/factory.h"
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#include "src/macro-assembler.h"
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#include "src/objects-inl.h"
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#include "src/simulator.h"
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#include "src/v8.h"
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#include "test/cctest/cctest.h"
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#include "test/cctest/test-code-stubs.h"
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namespace v8 {
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namespace internal {
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#define __ masm.
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ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
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Register destination_reg) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
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Assembler::kMinimalBufferSize, &actual_size,
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v8::base::OS::MemoryPermission::kReadWriteExecute));
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CHECK(buffer);
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HandleScope handles(isolate);
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MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size),
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v8::internal::CodeObjectRequired::kYes);
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DoubleToIStub stub(isolate, destination_reg);
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byte* start = stub.GetCode()->instruction_start();
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// Save callee save registers.
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__ Push(r7, r6, r5, r4);
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__ Push(lr);
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// For softfp, move the input value into d0.
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if (!masm.use_eabi_hardfloat()) {
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__ vmov(d0, r0, r1);
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}
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// Push the double argument.
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__ sub(sp, sp, Operand(kDoubleSize));
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__ vstr(d0, sp, 0);
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// Save registers make sure they don't get clobbered.
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int source_reg_offset = kDoubleSize;
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int reg_num = 0;
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for (; reg_num < Register::kNumRegisters; ++reg_num) {
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if (RegisterConfiguration::Default()->IsAllocatableGeneralCode(reg_num)) {
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Register reg = Register::from_code(reg_num);
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if (reg != destination_reg) {
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__ push(reg);
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source_reg_offset += kPointerSize;
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}
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}
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}
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// Re-push the double argument.
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__ sub(sp, sp, Operand(kDoubleSize));
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__ vstr(d0, sp, 0);
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// Call through to the actual stub
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__ Call(start, RelocInfo::EXTERNAL_REFERENCE);
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__ add(sp, sp, Operand(kDoubleSize));
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// Make sure no registers have been unexpectedly clobbered
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for (--reg_num; reg_num >= 0; --reg_num) {
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if (RegisterConfiguration::Default()->IsAllocatableGeneralCode(reg_num)) {
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Register reg = Register::from_code(reg_num);
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if (reg != destination_reg) {
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__ ldr(ip, MemOperand(sp, 0));
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__ cmp(reg, ip);
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__ Assert(eq, kRegisterWasClobbered);
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__ add(sp, sp, Operand(kPointerSize));
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}
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}
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}
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__ add(sp, sp, Operand(kDoubleSize));
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if (destination_reg != r0) __ mov(r0, destination_reg);
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// Restore callee save registers.
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__ Pop(lr);
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__ Pop(r7, r6, r5, r4);
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__ Ret(0);
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CodeDesc desc;
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masm.GetCode(isolate, &desc);
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Assembler::FlushICache(isolate, buffer, actual_size);
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return (reinterpret_cast<ConvertDToIFunc>(
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reinterpret_cast<intptr_t>(buffer)));
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}
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#undef __
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static Isolate* GetIsolateFrom(LocalContext* context) {
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return reinterpret_cast<Isolate*>((*context)->GetIsolate());
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}
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int32_t RunGeneratedCodeCallWrapper(ConvertDToIFunc func,
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double from) {
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#ifdef USE_SIMULATOR
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return CALL_GENERATED_FP_INT(CcTest::i_isolate(), func, from, 0);
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#else
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return (*func)(from);
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#endif
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}
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TEST(ConvertDToI) {
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CcTest::InitializeVM();
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LocalContext context;
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Isolate* isolate = GetIsolateFrom(&context);
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HandleScope scope(isolate);
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#if DEBUG
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// Verify that the tests actually work with the C version. In the release
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// code, the compiler optimizes it away because it's all constant, but does it
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// wrong, triggering an assert on gcc.
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RunAllTruncationTests(&ConvertDToICVersion);
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#endif
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Register dest_registers[] = {r0, r1, r2, r3, r4, r5, r6, r7};
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for (size_t d = 0; d < sizeof(dest_registers) / sizeof(Register); d++) {
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RunAllTruncationTests(
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RunGeneratedCodeCallWrapper,
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MakeConvertDToIFuncTrampoline(isolate, dest_registers[d]));
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}
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}
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} // namespace internal
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} // namespace v8
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