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6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC

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Reviewed-by: never, jrose
This commit is contained in:
Christian Thalinger 2010-10-13 01:19:43 -07:00
parent e870866699
commit 98e9ecf9da
4 changed files with 231 additions and 35 deletions
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19
hotspot/src/share/vm/prims/methodHandles.hpp
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@ -226,11 +226,20 @@ class MethodHandles: AllStatic {
}
enum { CONV_VMINFO_SIGN_FLAG = 0x80 };
static int adapter_subword_vminfo(BasicType dest) {
if (dest == T_BOOLEAN) return (BitsPerInt - 1);
if (dest == T_CHAR) return (BitsPerInt - 16);
if (dest == T_BYTE) return (BitsPerInt - 8) | CONV_VMINFO_SIGN_FLAG;
if (dest == T_SHORT) return (BitsPerInt - 16) | CONV_VMINFO_SIGN_FLAG;
// Shift values for prim-to-prim conversions.
static int adapter_prim_to_prim_subword_vminfo(BasicType dest) {
if (dest == T_BOOLEAN) return (BitsPerInt - 1); // boolean is 1 bit
if (dest == T_CHAR) return (BitsPerInt - BitsPerShort);
if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG;
if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG;
return 0; // case T_INT
}
// Shift values for unboxing a primitive.
static int adapter_unbox_subword_vminfo(BasicType dest) {
if (dest == T_BOOLEAN) return (BitsPerInt - BitsPerByte ); // implemented as 1 byte
if (dest == T_CHAR) return (BitsPerInt - BitsPerShort);
if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG;
if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG;
return 0; // case T_INT
}
// Here is the transformation the i2i adapter must perform: