Mercurial > hg > graal-jvmci-8
diff src/share/vm/prims/unsafe.cpp @ 23614:32b682649973 jdk8u75-b04
8132051: Better byte behavior
Reviewed-by: coleenp, roland
| author | kevinw |
|---|---|
| date | Fri, 15 Jan 2016 22:33:15 +0000 |
| parents | f46871c6c063 |
| children | b5f3a471e646 d109bda16490 |
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--- a/src/share/vm/prims/unsafe.cpp Mon Jan 11 13:41:45 2016 -0800 +++ b/src/share/vm/prims/unsafe.cpp Fri Jan 15 22:33:15 2016 +0000 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2000, 2016, 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 @@ -156,13 +156,22 @@ ///// Data in the Java heap. +#define truncate_jboolean(x) ((x) & 1) +#define truncate_jbyte(x) (x) +#define truncate_jshort(x) (x) +#define truncate_jchar(x) (x) +#define truncate_jint(x) (x) +#define truncate_jlong(x) (x) +#define truncate_jfloat(x) (x) +#define truncate_jdouble(x) (x) + #define GET_FIELD(obj, offset, type_name, v) \ oop p = JNIHandles::resolve(obj); \ type_name v = *(type_name*)index_oop_from_field_offset_long(p, offset) #define SET_FIELD(obj, offset, type_name, x) \ oop p = JNIHandles::resolve(obj); \ - *(type_name*)index_oop_from_field_offset_long(p, offset) = x + *(type_name*)index_oop_from_field_offset_long(p, offset) = truncate_##type_name(x) #define GET_FIELD_VOLATILE(obj, offset, type_name, v) \ oop p = JNIHandles::resolve(obj); \ @@ -173,7 +182,7 @@ #define SET_FIELD_VOLATILE(obj, offset, type_name, x) \ oop p = JNIHandles::resolve(obj); \ - OrderAccess::release_store_fence((volatile type_name*)index_oop_from_field_offset_long(p, offset), x); + OrderAccess::release_store_fence((volatile type_name*)index_oop_from_field_offset_long(p, offset), truncate_##type_name(x)); // Macros for oops that check UseCompressedOops