v8/test/cctest/test-platform.cc

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// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include "src/base/build_config.h"
#include "src/base/platform/platform.h"
#include "test/cctest/cctest.h"
using OS = v8::base::OS;
namespace v8 {
namespace internal {
TEST(OSReserveMemory) {
Revert "[Memory] Use OS::Allocate for all OS memory allocations." This reverts commit 7e78506fc20875de05cd0a25411ebabb5d67f179. 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}
2017-11-08 23:08:21 +00:00
size_t mem_size = 0;
void* mem_addr = OS::ReserveAlignedRegion(1 * MB, OS::AllocatePageSize(),
OS::GetRandomMmapAddr(), &mem_size);
CHECK_NE(0, mem_size);
CHECK_NOT_NULL(mem_addr);
Revert "[Memory] Use OS::Allocate for all OS memory allocations." This reverts commit 7e78506fc20875de05cd0a25411ebabb5d67f179. 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}
2017-11-08 23:08:21 +00:00
size_t block_size = 4 * KB;
CHECK(OS::CommitRegion(mem_addr, block_size, false));
// Check whether we can write to memory.
int* addr = static_cast<int*>(mem_addr);
addr[KB - 1] = 2;
Revert "[Memory] Use OS::Allocate for all OS memory allocations." This reverts commit 7e78506fc20875de05cd0a25411ebabb5d67f179. 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}
2017-11-08 23:08:21 +00:00
CHECK(OS::UncommitRegion(mem_addr, block_size));
OS::ReleaseRegion(mem_addr, mem_size);
}
#ifdef V8_CC_GNU
static uintptr_t sp_addr = 0;
void GetStackPointer(const v8::FunctionCallbackInfo<v8::Value>& args) {
#if V8_HOST_ARCH_X64
__asm__ __volatile__("mov %%rsp, %0" : "=g"(sp_addr));
#elif V8_HOST_ARCH_IA32
__asm__ __volatile__("mov %%esp, %0" : "=g"(sp_addr));
#elif V8_HOST_ARCH_ARM
__asm__ __volatile__("str sp, %0" : "=g"(sp_addr));
#elif V8_HOST_ARCH_ARM64
__asm__ __volatile__("mov x16, sp; str x16, %0" : "=g"(sp_addr));
#elif V8_HOST_ARCH_MIPS
__asm__ __volatile__("sw $sp, %0" : "=g"(sp_addr));
#elif V8_HOST_ARCH_MIPS64
__asm__ __volatile__("sd $sp, %0" : "=g"(sp_addr));
#elif defined(__s390x__) || defined(_ARCH_S390X)
__asm__ __volatile__("stg 15, %0" : "=m"(sp_addr));
#elif defined(__s390__) || defined(_ARCH_S390)
__asm__ __volatile__("st 15, %0" : "=m"(sp_addr));
#elif defined(__PPC64__) || defined(_ARCH_PPC64)
__asm__ __volatile__("std 1, %0" : "=g"(sp_addr));
#elif defined(__PPC__) || defined(_ARCH_PPC)
__asm__ __volatile__("stw 1, %0" : "=g"(sp_addr));
#else
#error Host architecture was not detected as supported by v8
#endif
args.GetReturnValue().Set(v8::Integer::NewFromUnsigned(
args.GetIsolate(), static_cast<uint32_t>(sp_addr)));
}
TEST(StackAlignment) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::ObjectTemplate> global_template =
v8::ObjectTemplate::New(isolate);
global_template->Set(v8_str("get_stack_pointer"),
v8::FunctionTemplate::New(isolate, GetStackPointer));
LocalContext env(nullptr, global_template);
CompileRun(
"function foo() {"
" return get_stack_pointer();"
"}");
v8::Local<v8::Object> global_object = env->Global();
v8::Local<v8::Function> foo = v8::Local<v8::Function>::Cast(
global_object->Get(isolate->GetCurrentContext(), v8_str("foo"))
.ToLocalChecked());
v8::Local<v8::Value> result =
foo->Call(isolate->GetCurrentContext(), global_object, 0, nullptr)
.ToLocalChecked();
CHECK_EQ(0u, result->Uint32Value(isolate->GetCurrentContext()).FromJust() %
OS::ActivationFrameAlignment());
}
#endif // V8_CC_GNU
} // namespace internal
} // namespace v8