SquirrelJME/SquirrelJME

# 2015/08/18

***DISCLAIMER***: _These notes are from the defunct k8 project which_
_precedes SquirrelJME. The notes for SquirrelJME start on 2016/02/26!_
_The k8 project was effectively a Java SE 8 operating system and as such_
_all of the notes are in the context of that scope. That project is no_
_longer my goal as SquirrelJME is the spiritual successor to it._

## 13:31

With InstructionInfoDecoder I can have Manifests store all the instruction
information and share it among any architecture.

## 15:36

PowerPC instruction encoding is incorrect.

    
    
    [FINEST] AsmOp: or:[opcd=31, rs=1, ra=0, rb=1, xo=444, rc=0]
    [FINEST] AsmEn: 3e 04 d0 1e
    [FINEST] AsmOp: stwu:[opcd=37, rs=1, ra=1, d=0]
    [FINEST] AsmEn: 29 84 00 00
    

Results in:

    
    
       0:    3e 04 d0 1e     mulli   r22,r16,1086
       4:    29 84 00 00     .long 0x8429
    

## 15:42

The desired code is as followed:

    
    
       0:    7c 20 0b 78     mr      r0,r1
       4:    94 21 00 00     stwu    r1,0(r1)
    

## 19:03

Now instruction generation is complete. I could quite possibly split the
assembler from the asm package since it is just a tool for the most part.
Although I do not believe I can move the MutableOpCode out of it. Well
actually I believe it is possible to move that also out of there.

## 19:45

At least when I work on the Assembler and the MutableOpCode stuff, less
recompilation is needed. I no longer have to regenerate PowerPC opcodes for
example when I change something in the assembler. However I do end up having
to recompile the bulk of the NARF code however. But every little bit counts.