Wed, 08 Apr 2009 10:56:49 -0700
6655638: dynamic languages need method handles
Summary: initial implementation, with known omissions (x86/64, sparc, compiler optim., c-oops, C++ interp.)
Reviewed-by: kvn, twisti, never
duke@435 | 1 | /* |
xdono@631 | 2 | * Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // Inline functions for memory copy and fill. |
duke@435 | 26 | |
duke@435 | 27 | static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 28 | (void)memmove(to, from, count * HeapWordSize); |
duke@435 | 29 | } |
duke@435 | 30 | |
duke@435 | 31 | static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 32 | switch (count) { |
duke@435 | 33 | case 8: to[7] = from[7]; |
duke@435 | 34 | case 7: to[6] = from[6]; |
duke@435 | 35 | case 6: to[5] = from[5]; |
duke@435 | 36 | case 5: to[4] = from[4]; |
duke@435 | 37 | case 4: to[3] = from[3]; |
duke@435 | 38 | case 3: to[2] = from[2]; |
duke@435 | 39 | case 2: to[1] = from[1]; |
duke@435 | 40 | case 1: to[0] = from[0]; |
duke@435 | 41 | case 0: break; |
duke@435 | 42 | default: (void)memcpy(to, from, count * HeapWordSize); |
duke@435 | 43 | break; |
duke@435 | 44 | } |
duke@435 | 45 | } |
duke@435 | 46 | |
duke@435 | 47 | static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 48 | switch (count) { |
duke@435 | 49 | case 8: to[7] = from[7]; |
duke@435 | 50 | case 7: to[6] = from[6]; |
duke@435 | 51 | case 6: to[5] = from[5]; |
duke@435 | 52 | case 5: to[4] = from[4]; |
duke@435 | 53 | case 4: to[3] = from[3]; |
duke@435 | 54 | case 3: to[2] = from[2]; |
duke@435 | 55 | case 2: to[1] = from[1]; |
duke@435 | 56 | case 1: to[0] = from[0]; |
duke@435 | 57 | case 0: break; |
duke@435 | 58 | default: while (count-- > 0) { |
duke@435 | 59 | *to++ = *from++; |
duke@435 | 60 | } |
duke@435 | 61 | break; |
duke@435 | 62 | } |
duke@435 | 63 | } |
duke@435 | 64 | |
duke@435 | 65 | static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 66 | (void)memmove(to, from, count * HeapWordSize); |
duke@435 | 67 | } |
duke@435 | 68 | |
duke@435 | 69 | static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 70 | pd_disjoint_words(from, to, count); |
duke@435 | 71 | } |
duke@435 | 72 | |
duke@435 | 73 | static void pd_conjoint_bytes(void* from, void* to, size_t count) { |
duke@435 | 74 | (void)memmove(to, from, count); |
duke@435 | 75 | } |
duke@435 | 76 | |
duke@435 | 77 | static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) { |
duke@435 | 78 | (void)memmove(to, from, count); |
duke@435 | 79 | } |
duke@435 | 80 | |
duke@435 | 81 | static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) { |
duke@435 | 82 | // FIXME |
duke@435 | 83 | (void)memmove(to, from, count << LogBytesPerShort); |
duke@435 | 84 | } |
duke@435 | 85 | |
duke@435 | 86 | static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) { |
duke@435 | 87 | // FIXME |
duke@435 | 88 | (void)memmove(to, from, count << LogBytesPerInt); |
duke@435 | 89 | } |
duke@435 | 90 | |
duke@435 | 91 | static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) { |
duke@435 | 92 | #ifdef _LP64 |
duke@435 | 93 | assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size"); |
duke@435 | 94 | pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); |
duke@435 | 95 | #else |
duke@435 | 96 | // Guarantee use of ldd/std via some asm code, because compiler won't. |
duke@435 | 97 | // See solaris_sparc.il. |
duke@435 | 98 | _Copy_conjoint_jlongs_atomic(from, to, count); |
duke@435 | 99 | #endif |
duke@435 | 100 | } |
duke@435 | 101 | |
duke@435 | 102 | static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) { |
duke@435 | 103 | // Do better than this: inline memmove body NEEDS CLEANUP |
duke@435 | 104 | if (from > to) { |
duke@435 | 105 | while (count-- > 0) { |
duke@435 | 106 | // Copy forwards |
duke@435 | 107 | *to++ = *from++; |
duke@435 | 108 | } |
duke@435 | 109 | } else { |
duke@435 | 110 | from += count - 1; |
duke@435 | 111 | to += count - 1; |
duke@435 | 112 | while (count-- > 0) { |
duke@435 | 113 | // Copy backwards |
duke@435 | 114 | *to-- = *from--; |
duke@435 | 115 | } |
duke@435 | 116 | } |
duke@435 | 117 | } |
duke@435 | 118 | |
duke@435 | 119 | static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 120 | pd_conjoint_bytes_atomic(from, to, count); |
duke@435 | 121 | } |
duke@435 | 122 | |
duke@435 | 123 | static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 124 | pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count); |
duke@435 | 125 | } |
duke@435 | 126 | |
duke@435 | 127 | static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 128 | pd_conjoint_jints_atomic((jint*)from, (jint*)to, count); |
duke@435 | 129 | } |
duke@435 | 130 | |
duke@435 | 131 | static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 132 | pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count); |
duke@435 | 133 | } |
duke@435 | 134 | |
duke@435 | 135 | static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) { |
duke@435 | 136 | pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); |
duke@435 | 137 | } |
duke@435 | 138 | |
duke@435 | 139 | static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { |
coleenp@548 | 140 | #ifdef _LP64 |
coleenp@548 | 141 | guarantee(mask_bits((uintptr_t)tohw, right_n_bits(LogBytesPerLong)) == 0, |
coleenp@548 | 142 | "unaligned fill words"); |
coleenp@548 | 143 | julong* to = (julong*)tohw; |
coleenp@548 | 144 | julong v = ((julong)value << 32) | value; |
coleenp@548 | 145 | while (count-- > 0) { |
coleenp@548 | 146 | *to++ = v; |
coleenp@548 | 147 | } |
coleenp@548 | 148 | #else // _LP64 |
coleenp@548 | 149 | juint* to = (juint*)tohw; |
coleenp@548 | 150 | while (count-- > 0) { |
coleenp@548 | 151 | *to++ = value; |
coleenp@548 | 152 | } |
coleenp@548 | 153 | #endif // _LP64 |
duke@435 | 154 | } |
duke@435 | 155 | |
duke@435 | 156 | static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { |
duke@435 | 157 | assert(MinObjAlignmentInBytes == BytesPerLong, "need alternate implementation"); |
duke@435 | 158 | |
duke@435 | 159 | julong* to = (julong*)tohw; |
duke@435 | 160 | julong v = ((julong)value << 32) | value; |
duke@435 | 161 | // If count is odd, odd will be equal to 1 on 32-bit platform |
duke@435 | 162 | // and be equal to 0 on 64-bit platform. |
duke@435 | 163 | size_t odd = count % (BytesPerLong / HeapWordSize) ; |
duke@435 | 164 | |
duke@435 | 165 | size_t aligned_count = align_object_size(count - odd) / HeapWordsPerLong; |
duke@435 | 166 | julong* end = ((julong*)tohw) + aligned_count - 1; |
duke@435 | 167 | while (to <= end) { |
duke@435 | 168 | DEBUG_ONLY(count -= BytesPerLong / HeapWordSize ;) |
duke@435 | 169 | *to++ = v; |
duke@435 | 170 | } |
duke@435 | 171 | assert(count == odd, "bad bounds on loop filling to aligned words"); |
duke@435 | 172 | if (odd) { |
duke@435 | 173 | *((juint*)to) = value; |
duke@435 | 174 | |
duke@435 | 175 | } |
duke@435 | 176 | } |
duke@435 | 177 | |
duke@435 | 178 | static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { |
duke@435 | 179 | (void)memset(to, value, count); |
duke@435 | 180 | } |
duke@435 | 181 | |
duke@435 | 182 | static void pd_zero_to_words(HeapWord* tohw, size_t count) { |
duke@435 | 183 | pd_fill_to_words(tohw, count, 0); |
duke@435 | 184 | } |
duke@435 | 185 | |
duke@435 | 186 | static void pd_zero_to_bytes(void* to, size_t count) { |
duke@435 | 187 | (void)memset(to, 0, count); |
duke@435 | 188 | } |