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/*
* Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "precompiled.hpp"
#include "runtime/stubRoutines.hpp"
#include "utilities/copy.hpp"
#include "unittest.hpp"
typedef void (*arraycopy_fn)(address src, address dst, int count);
// simple tests of generated arraycopy functions
static void test_arraycopy_func(address func, int alignment) {
int v = 0xcc;
int v2 = 0x11;
jlong lbuffer[8];
jlong lbuffer2[8];
address fbuffer = (address) lbuffer;
address fbuffer2 = (address) lbuffer2;
unsigned int i;
for (i = 0; i < sizeof(lbuffer); i++) {
fbuffer[i] = v; fbuffer2[i] = v2;
}
// C++ does not guarantee jlong[] array alignment to 8 bytes.
// Use middle of array to check that memory before it is not modified.
address buffer = align_up((address)&lbuffer[4], BytesPerLong);
address buffer2 = align_up((address)&lbuffer2[4], BytesPerLong);
// do an aligned copy
((arraycopy_fn)func)(buffer, buffer2, 0);
for (i = 0; i < sizeof(lbuffer); i++) {
ASSERT_TRUE(fbuffer[i] == v && fbuffer2[i] == v2) << "shouldn't have copied anything";
}
// adjust destination alignment
((arraycopy_fn)func)(buffer, buffer2 + alignment, 0);
for (i = 0; i < sizeof(lbuffer); i++) {
ASSERT_TRUE(fbuffer[i] == v && fbuffer2[i] == v2) << "shouldn't have copied anything";
}
// adjust source alignment
((arraycopy_fn)func)(buffer + alignment, buffer2, 0);
for (i = 0; i < sizeof(lbuffer); i++) {
ASSERT_TRUE(fbuffer[i] == v && fbuffer2[i] == v2) << "shouldn't have copied anything";
}
}
TEST_VM(StubRoutines, array_copy_routine) {
MACOS_AARCH64_ONLY(os::current_thread_enable_wx(WXExec));
#define TEST_ARRAYCOPY(type) \
test_arraycopy_func( StubRoutines::type##_arraycopy(), sizeof(type)); \
test_arraycopy_func( StubRoutines::type##_disjoint_arraycopy(), sizeof(type)); \
test_arraycopy_func(StubRoutines::arrayof_##type##_arraycopy(), sizeof(HeapWord)); \
test_arraycopy_func(StubRoutines::arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord))
// Make sure all the arraycopy stubs properly handle zero count
TEST_ARRAYCOPY(jbyte);
TEST_ARRAYCOPY(jshort);
TEST_ARRAYCOPY(jint);
TEST_ARRAYCOPY(jlong);
#undef TEST_ARRAYCOPY
MACOS_AARCH64_ONLY(os::current_thread_enable_wx(WXWrite));
}
TEST_VM(StubRoutines, copy_routine) {
MACOS_AARCH64_ONLY(os::current_thread_enable_wx(WXExec));
#define TEST_COPYRTN(type) \
test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \
test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type)))
// Make sure all the copy runtime routines properly handle zero count
TEST_COPYRTN(jbyte);
TEST_COPYRTN(jshort);
TEST_COPYRTN(jint);
TEST_COPYRTN(jlong);
#undef TEST_COPYRTN
test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord));
test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord));
test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord));
// Aligned to BytesPerLong
test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong));
test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong));
MACOS_AARCH64_ONLY(os::current_thread_enable_wx(WXWrite));
}
TEST_VM(StubRoutines, array_fill_routine) {
MACOS_AARCH64_ONLY(os::current_thread_enable_wx(WXExec));
#define TEST_FILL(type) \
if (StubRoutines::_##type##_fill != nullptr) { \
union { \
double d; \
type body[96]; \
} s; \
\
int v = 32; \
for (int offset = -2; offset <= 2; offset++) { \
for (int i = 0; i < 96; i++) { \
s.body[i] = 1; \
} \
type* start = s.body + 8 + offset; \
for (int aligned = 0; aligned < 2; aligned++) { \
if (aligned) { \
if (((intptr_t)start) % HeapWordSize == 0) { \
((void (*)(type*, int, int))StubRoutines::_arrayof_##type##_fill)(start, v, 80); \
} else { \
continue; \
} \
} else { \
((void (*)(type*, int, int))StubRoutines::_##type##_fill)(start, v, 80); \
} \
for (int i = 0; i < 96; i++) { \
if (i < (8 + offset) || i >= (88 + offset)) { \
ASSERT_TRUE(s.body[i] == 1) << "what?"; \
} else { \
ASSERT_TRUE(s.body[i] == 32) << "what?"; \
} \
} \
} \
} \
} \
TEST_FILL(jbyte);
TEST_FILL(jshort);
TEST_FILL(jint);
#undef TEST_FILL
MACOS_AARCH64_ONLY(os::current_thread_enable_wx(WXWrite));
}
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