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no it doesn't | 197 comments | Create New Account
Comments belong to whoever posts them. Please notify us of inappropriate comments.
no it doesn't
Authored by: Anonymous on Sunday, May 13 2012 @ 04:33 PM EDT
"Java bytecode" means the bytecode instructions. What else could it mean? It doesn't mean everything that the .class file contains. It doesn't mean bytecode instructions plus whatever data from the constant pool that they happen to mean.

It means what it says on the tin.

Besides.. in the '104 patent they don't use phrases like "Java bytecode". Instead, they use phrases like this:

11. An apparatus comprising:

a memory containing intermediate form object code constituted by a set of instructions, certain of said instructions containing one or more symbolic references; and
a processor configured to execute said instructions containing one or more symbolic references by determining a numerical reference corresponding to said symbolic reference, storing said numerical references, and obtaining data in accordance to said numerical references.

14. The method of claim 3, wherein said substep of storing said numerical reference comprises the substep of replacing said symbolic reference with said numerical reference.

15. The method of claim 3, wherein said step of resolving said symbolic reference further comprises the substep of executing said instruction containing said symbolic reference using the stored numerical reference.

16. The method of claim 3, wherein said step of resolving said symbolic reference further comprises the substep of advancing program execution control after said substep of executing said instruction containing said symbolic reference.

(all emphasis is mine)

Many more of the '104 patent's claims mention explicitly that the instructions must contain the symbolic reference. Java bytecode instructions do not have that property.

[ Reply to This | Parent | # ]

it really is an index
Authored by: Anonymous on Sunday, May 13 2012 @ 04:45 PM EDT
The constant pool entries can be thought of as numbered slots: slot 0, slot 1,
slot 2.

And the bytecodes contain an "index" which is just the slot number.
So if the bytecode contains the index 2, that means look in slot 2 of the
constant pool entries.

I believe each entry is 5 bytes, but don't quote me on that (I'm sure its
spelled out in detail in the VM spec though).

[ Reply to This | Parent | # ]

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