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List of issues#1173 How is P-code ofsXXX generated?
Author: 
capasha
capashaDate created:
Type: question
Visibility: Everybody
Assigned to:
Labels: P-code
State: closed 
I'm wondering how p-code ofs"XXXX" is generated.
Because I'm making a tool that generate code for a flash program.
So I know how I should convert xxxx to.
Right now do I only generate numbers. But I have seen letters too. And I wonder how it's
generated.
Example P-code generated from my tool:
iffalse ofs5875
ofs5875:
P-code example from the swf:
iffalse ofs028f
ofs028f:
It is a hexadecimal number
5875 is 22645 in dec
028f is 655
State: new→upgraded
It is just a label. You can put "dog" in it, any valid AS identifier, it will compile
iffalse helloKitty
...
helloKitty:
this will compile in FFDec correctly.
Label names are not stored in the SWF file so they are lost. During decompilation we
assign then unique identifiers based on offset in the method - ofs028f is "ofs" and 028f
which is address of the instruction in hexadecimal. The label does not matter, it just
need to be unique in the P-code so we give them addressbased name.
Thanks.
State: upgraded→closed