Mercurial > hg > truffle
view src/cpu/sparc/vm/copy_sparc.hpp @ 20134:9dcf9f8779c2
fix for replay compilation support
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 02 Apr 2015 10:00:21 +0200 |
parents | 7f1743e1a14e |
children |
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/* * Copyright (c) 2003, 2011, 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. * */ #ifndef CPU_SPARC_VM_COPY_SPARC_HPP #define CPU_SPARC_VM_COPY_SPARC_HPP // Inline functions for memory copy and fill. static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { (void)memmove(to, from, count * HeapWordSize); } static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { switch (count) { case 8: to[7] = from[7]; case 7: to[6] = from[6]; case 6: to[5] = from[5]; case 5: to[4] = from[4]; case 4: to[3] = from[3]; case 3: to[2] = from[2]; case 2: to[1] = from[1]; case 1: to[0] = from[0]; case 0: break; default: (void)memcpy(to, from, count * HeapWordSize); break; } } static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) { switch (count) { case 8: to[7] = from[7]; case 7: to[6] = from[6]; case 6: to[5] = from[5]; case 5: to[4] = from[4]; case 4: to[3] = from[3]; case 3: to[2] = from[2]; case 2: to[1] = from[1]; case 1: to[0] = from[0]; case 0: break; default: while (count-- > 0) { *to++ = *from++; } break; } } static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { (void)memmove(to, from, count * HeapWordSize); } static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { pd_disjoint_words(from, to, count); } static void pd_conjoint_bytes(void* from, void* to, size_t count) { (void)memmove(to, from, count); } static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) { (void)memmove(to, from, count); } static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) { if (from > to) { while (count-- > 0) { // Copy forwards *to++ = *from++; } } else { from += count - 1; to += count - 1; while (count-- > 0) { // Copy backwards *to-- = *from--; } } } static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) { if (from > to) { while (count-- > 0) { // Copy forwards *to++ = *from++; } } else { from += count - 1; to += count - 1; while (count-- > 0) { // Copy backwards *to-- = *from--; } } } static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) { #ifdef _LP64 assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size"); pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); #else // Guarantee use of ldd/std via some asm code, because compiler won't. // See solaris_sparc.il. _Copy_conjoint_jlongs_atomic(from, to, count); #endif } static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) { // Do better than this: inline memmove body NEEDS CLEANUP if (from > to) { while (count-- > 0) { // Copy forwards *to++ = *from++; } } else { from += count - 1; to += count - 1; while (count-- > 0) { // Copy backwards *to-- = *from--; } } } static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) { pd_conjoint_bytes_atomic(from, to, count); } static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) { pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count); } static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) { pd_conjoint_jints_atomic((jint*)from, (jint*)to, count); } static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) { pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count); } static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) { pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); } static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { #ifdef _LP64 guarantee(mask_bits((uintptr_t)tohw, right_n_bits(LogBytesPerLong)) == 0, "unaligned fill words"); julong* to = (julong*)tohw; julong v = ((julong)value << 32) | value; while (count-- > 0) { *to++ = v; } #else // _LP64 juint* to = (juint*)tohw; while (count-- > 0) { *to++ = value; } #endif // _LP64 } typedef void (*_zero_Fn)(HeapWord* to, size_t count); static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { assert(MinObjAlignmentInBytes >= BytesPerLong, "need alternate implementation"); if (value == 0 && UseBlockZeroing && (count > (size_t)(BlockZeroingLowLimit >> LogHeapWordSize))) { // Call it only when block zeroing is used ((_zero_Fn)StubRoutines::zero_aligned_words())(tohw, count); } else { julong* to = (julong*)tohw; julong v = ((julong)value << 32) | value; // If count is odd, odd will be equal to 1 on 32-bit platform // and be equal to 0 on 64-bit platform. size_t odd = count % (BytesPerLong / HeapWordSize) ; size_t aligned_count = align_object_offset(count - odd) / HeapWordsPerLong; julong* end = ((julong*)tohw) + aligned_count - 1; while (to <= end) { DEBUG_ONLY(count -= BytesPerLong / HeapWordSize ;) *to++ = v; } assert(count == odd, "bad bounds on loop filling to aligned words"); if (odd) { *((juint*)to) = value; } } } static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { (void)memset(to, value, count); } static void pd_zero_to_words(HeapWord* tohw, size_t count) { pd_fill_to_words(tohw, count, 0); } static void pd_zero_to_bytes(void* to, size_t count) { (void)memset(to, 0, count); } #endif // CPU_SPARC_VM_COPY_SPARC_HPP