Path: chuka.playstation.co.uk!news
From: "John Blackburne" <johnb@hk.super.net>
Newsgroups: scee.yaroze.programming.codewarrior,scea.yaroze.programming.codewarrior
Subject: GTE asm with CodeWarrior
Date: Sat, 23 Jan 1999 22:59:01 +0000
Organization: PlayStation Net Yaroze (SCEE)
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Xref: chuka.playstation.co.uk scee.yaroze.programming.codewarrior:433 scea.yaroze.programming.codewarrior:377

I'm having problems comiling GTE and GTE related code using CodeWarrior. 
CodeWarrior's assembler does not understand any GTE op-codes, nor does it
understand the R3000 opcodes lwc2 and swc2. So the following code:

asm void _testing(VECTOR *pV, int iScale)
 {
 lwc2  9, 0(a0)
 lwc2  10, 4(a0)
 lwc2  11, 8(a0)
 mtc2  a1, 8  
 nop
 nop
 GPF 1
 swc2  25,  0(a0)
 swc2  26,  4(a0)
 swc2  27,  8(a0)
 jr   ra    
 nop
}

Generates the following errors:

Error   : illegal operand
math.c line 90   lwc2  9, 0(a0)

Error   : illegal operand
math.c line 91   lwc2  10, 4(a0)

Error   : illegal operand
math.c line 92   lwc2  11, 8(a0)

Error   : unknown assembler instruction mnemonic
math.c line 96   GPF 1

Error   : illegal operand
math.c line 97   swc2  25,  0(a0)

Error   : illegal operand
math.c line 98   swc2  26,  4(a0)

Error   : illegal operand
math.c line 99   swc2  27,  8(a0)


I might be able to work around this using a 'dw' op-code/directive but that
doesn't seem to be recognised either. I'm using the latest version of
CodeWarrior for Net Yaroze on a Macintosh.

John