[M3commit] CVS Update: cm3

[Jay K]

Given the current setup..I still think worthwhile to send diffs (just not in check comments..), attached.

Of course, I might have made further edits since producing that, but I try to send latest.

 

 - Jay
 
> Date: Thu, 25 Feb 2010 14:06:40 +0000
> To: m3commit at elegosoft.com
> From: jkrell at elego.de
> Subject: [M3commit] CVS Update: cm3
> 
> CVSROOT: /usr/cvs
> Changes by: jkrell at birch. 10/02/25 14:06:40
> 
> Modified files:
> cm3/m3-sys/m3back/src/: Codex86.i3 Codex86.m3 M3BackInt.i3 
> M3BackInt.m3 M3x86.m3 M3x86Rep.i3 
> Stackx86.i3 Stackx86.m3 Wrx86.i3 
> Wrx86.m3 m3makefile 
> cm3/m3-sys/m3middle/src/: TInt.i3 TInt.m3 TWord.i3 TWord.m3 
> Removed files:
> cm3/m3-sys/m3back/src/: M3BackWord.i3 M3BackWord.m3 
> 
> Log message:
> eliminate M3BackWord
> 
> drastically reduce M3BackInt to just:
> FromInt
> ToInt
> FromTargetInt
> ToDiagnosticText
> which can probably all go into TInt as something like
> FromIntAndChop
> ChopAndToInt
> CopyAndChop
> ToTextVerbose
> or somesuch, or caller synthesize
> 
> add TInt.NE, GT, GE, Abs, Negate
> TWord.GE, GT
> 
> which make for a smoother transition for m3back, even if the caller
> can inline them
> 
> change TInt.EQ and NE to use structural (infix) comparison
> 
> move the constants all to TInt to reduce abstraction boundary violations:
> Three, Four, Eight
> ThirtyOne, ThirtyTwo,
> SixtyThree,
> F3FF
> x0400, x0800, x0F00,
> MaxU8 -- changed to Target.Word8.max
> MThirtyOne, MSixtyThree
> 
> perhaps not the best choice.
> At least 31, 32, 63, 64, -31, -63, maxu8 aren't super target-dependent.
> Some of the others are encodings for x87 status flags for example.
> Converting from strings is another not bad idea.
> 
> The only abstraction boundary violation remaining now is the avoidance of ToBytes in init_int
> where the bytes are passed directly to m3objfile.AppendBytes
> This should perhaps be revisited.
> Granted, inconsistency with regard to where I violate the boundary.
> I have to look into ToBytes again.
 		 	   		  
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