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fix sun.misc.Unsafe.arrayIndexScale implementation

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The original implementation was based on the assumption that the
passed class would be the array element type, whereas it is actually
the array type itself.
This commit is contained in:
Joel Dice 2013-05-13 14:25:59 -06:00
parent 6507150246
commit 4b0bbd85e8
1 changed files with 15 additions and 18 deletions
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33
src/classpath-openjdk.cpp
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@ -2665,24 +2665,21 @@ extern "C" JNIEXPORT int64_t JNICALL
Avian_sun_misc_Unsafe_arrayIndexScale
(Thread* t, object, uintptr_t* arguments)
{
object c = jclassVmClass(t, reinterpret_cast<object>(arguments[1]));
if (classVmFlags(t, c) & PrimitiveFlag) {
const char* name = reinterpret_cast<char*>
(&byteArrayBody(t, local::getClassName(t, c), 0));
switch (*name) {
case 'b': return 1;
case 's':
case 'c': return 2;
case 'l':
case 'd': return 8;
case 'i':
case 'f': return 4;
default: abort(t);
}
} else {
return BytesPerWord;
switch (byteArrayBody
(t, className
(t, jclassVmClass(t, reinterpret_cast<object>(arguments[1]))), 1))
{
case 'Z':
case 'B': return 1;
case 'S':
case 'C': return 2;
case 'I':
case 'F': return 4;
case 'J':
case 'D': return 8;
case '[':
case 'L': return BytesPerWord;
default: abort(t);
}
}