Revision: 16751
Author: [email protected]
Date: Tue Sep 17 09:01:12 2013 UTC
Log: ARM: Add tests for CopyBytes.
TEST=cctest/test-macro-assembler-arm.cc
[email protected]
Review URL: https://chromiumcodereview.appspot.com/23480027
Patch from Bangfu Tao <[email protected]>.
http://code.google.com/p/v8/source/detail?r=16751
Added:
/branches/bleeding_edge/test/cctest/test-macro-assembler-arm.cc
Modified:
/branches/bleeding_edge/test/cctest/cctest.gyp
=======================================
--- /dev/null
+++ /branches/bleeding_edge/test/cctest/test-macro-assembler-arm.cc Tue Sep
17 09:01:12 2013 UTC
@@ -0,0 +1,136 @@
+// Copyright 2013 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <stdlib.h>
+
+#include "v8.h"
+#include "macro-assembler.h"
+#include "arm/macro-assembler-arm.h"
+#include "arm/simulator-arm.h"
+#include "cctest.h"
+
+
+using namespace v8::internal;
+
+typedef void* (*F)(int x, int y, int p2, int p3, int p4);
+
+#define __ masm->
+
+
+static byte to_non_zero(int n) {
+ return static_cast<unsigned>(n) % 255 + 1;
+}
+
+
+static bool all_zeroes(const byte* beg, const byte* end) {
+ CHECK(beg);
+ CHECK(beg <= end);
+ while (beg < end) {
+ if (*beg++ != 0)
+ return false;
+ }
+ return true;
+}
+
+
+TEST(CopyBytes) {
+ CcTest::InitializeVM();
+ Isolate* isolate = Isolate::Current();
+ HandleScope handles(isolate);
+
+ const int data_size = 1 * KB;
+ size_t act_size;
+
+ // Allocate two blocks to copy data between.
+ byte* src_buffer = static_cast<byte*>(OS::Allocate(data_size, &act_size,
0));
+ CHECK(src_buffer);
+ CHECK(act_size >= static_cast<size_t>(data_size));
+ byte* dest_buffer = static_cast<byte*>(OS::Allocate(data_size,
&act_size, 0));
+ CHECK(dest_buffer);
+ CHECK(act_size >= static_cast<size_t>(data_size));
+
+ // Storage for R0 and R1.
+ byte* r0_;
+ byte* r1_;
+
+ MacroAssembler assembler(isolate, NULL, 0);
+ MacroAssembler* masm = &assembler;
+
+ // Code to be generated: The stuff in CopyBytes followed by a store of
R0 and
+ // R1, respectively.
+ __ CopyBytes(r0, r1, r2, r3);
+ __ mov(r2, Operand(reinterpret_cast<int>(&r0_)));
+ __ mov(r3, Operand(reinterpret_cast<int>(&r1_)));
+ __ str(r0, MemOperand(r2));
+ __ str(r1, MemOperand(r3));
+ __ bx(lr);
+
+ CodeDesc desc;
+ masm->GetCode(&desc);
+ Object* code = isolate->heap()->CreateCode(
+ desc,
+ Code::ComputeFlags(Code::STUB),
+ Handle<Code>())->ToObjectChecked();
+ CHECK(code->IsCode());
+
+ F f = FUNCTION_CAST<F>(Code::cast(code)->entry());
+
+ // Initialise source data with non-zero bytes.
+ for (int i = 0; i < data_size; i++) {
+ src_buffer[i] = to_non_zero(i);
+ }
+
+ const int fuzz = 11;
+
+ for (int size = 0; size < 600; size++) {
+ for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) {
+ for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) {
+ memset(dest_buffer, 0, data_size);
+ CHECK(dest + size < dest_buffer + data_size);
+ (void) CALL_GENERATED_CODE(f, reinterpret_cast<int>(src),
+ reinterpret_cast<int>(dest), size,
0, 0);
+ // R0 and R1 should point at the first byte after the copied data.
+ CHECK_EQ(src + size, r0_);
+ CHECK_EQ(dest + size, r1_);
+ // Check that we haven't written outside the target area.
+ CHECK(all_zeroes(dest_buffer, dest));
+ CHECK(all_zeroes(dest + size, dest_buffer + data_size));
+ // Check the target area.
+ CHECK_EQ(0, memcmp(src, dest, size));
+ }
+ }
+ }
+
+ // Check that the source data hasn't been clobbered.
+ for (int i = 0; i < data_size; i++) {
+ CHECK(src_buffer[i] == to_non_zero(i));
+ }
+}
+
+
+
+#undef __
=======================================
--- /branches/bleeding_edge/test/cctest/cctest.gyp Thu Sep 12 12:08:54 2013
UTC
+++ /branches/bleeding_edge/test/cctest/cctest.gyp Tue Sep 17 09:01:12 2013
UTC
@@ -139,7 +139,8 @@
'test-assembler-arm.cc',
'test-code-stubs.cc',
'test-code-stubs-arm.cc',
- 'test-disasm-arm.cc'
+ 'test-disasm-arm.cc',
+ 'test-macro-assembler-arm.cc'
],
}],
['v8_target_arch=="mipsel"', {
--
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