[Yhc] examining yhc bytecode

[Neil Mitchell]

Hi Kartik,

yhc -help gives you:

     -bcodecompile   show B code after compile (default=off)
     -bcodemem       show B code after heap usage analysis (default=off)
     -bcodeflatten   show B code after flattening (default=off)
     -bcoderel       show B code after converting to relative jumps
                     (default=off)

Running yhc Main.hs -bcodecompile

Compiling Main             ( Main.hs )
------  BCode after compilation:
FUN Main;main{193}(0/0) []
 STACK 3
   {
    PUSH_CONST 0                1 <[] | {}>
    PUSH_CONST 1                2 <[] | {}>
    PUSH 1              3 <["200"] | {"200"}>
    MK_AP 2 1           3 <[] | {}>
    APPLY 1             2 <[] | {}>
    PUSH 1              3 <["200"] | {"200"}>
    MK_AP 3 1           3 <[] | {}>
    MK_AP 4 2           2 <[] | {}>
    EVAL                2 <[] | {}>
    SLIDE 1             1 <[] | {}>
    RETURN              1 <[] | {}>
   }
 FLAGS []
---- ConstTable ---------------
0 CAF Prelude;Prelude.Num.Prelude.Integer{202}
1 INTEGER 42
2 FUN Prelude;fromInteger{123}
3 FUN Prelude;Prelude.Num.Prelude.Show{201}
4 FUN Prelude;print{50}
-------------------------------

The bytecode library should work, I'll raise a bug.

Thanks

Neil

On 9/28/06, Kartik Vaddadi <itskartik at iitb.ac.in> wrote:
> Hello,
> I want to examine yhc bytecode, but Robert Dockins's library
> (http://www.eecs.tufts.edu/~rdocki01/yhc-bytecode.html) complains of a
> "Bad version". Are there any alternatives, other than doing it manually
> using a hex editor? Thanks.
>
> --
> Kartik Vaddadi.
>
> Home:                   www.cse.iitb.ac.in/~kart
> Blogs:                  kartik-log.blogspot.com, kartik-rlog.blogspot.com
> Alternate mail ID:      kartik.vad at gmail.com
>
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