emul_ppc.cpp: complete instruction set

[retokromer]

Complete PowerPC instructions set

Instructions to add

• addme
• addmeo
• addze
• addzeo
• dcbst
• dcbt
• dcbtst
• divwuo
• fabs
• fadd
• fadds
• fcmpo
• fcmpu
• fctiw
• fctiwz
• fdiv
• fdivs
• fmadd
• fmadds
• fmr
• fmsub
• fmsubs
• fmul
• fmuls
• fnabs
• fneg
• fnmadd
• fnmadds
• fnmsub
• fnmsubs
• fres
• frsp
• frsqrte
• fsel
• fsqrt
• fsqrts
• fsub
• fsubs
• lfdu
• lfdux
• lfdx
• lfs
• lfsu
• lfsux
• lfsx
• lhbrx
• lwbrx
• mcrfs
• mcrxr
• mtfsb0
• mtfsb1
• mtfsfi
• mulhwu
• mullwo
• nego
• sc
• stfdu
• stfdux
• stfdx
• stfs
• stfsu
• stfsux
• stfsx
• sthbrx
• stwbrx
• subfo
• subfme
• subfmeo
• subfze
• subfzeo
• tw
• twi

Instructions to check

• crxor
• creqv

Reference

SheepShaver/src/emul_ppc/emul_ppc.cpp

Lines 21 to 99 in d7c8d52

	/*
	TODO:
	addme
	addmeo
	addze
	addzeo
	dcbst
	dcbt
	dcbtst
	divwuo
	fabs
	fadd
	fadds
	fcmpo
	fcmpu
	fctiw
	fctiwz
	fdiv
	fdivs
	fmadd
	fmadds
	fmr
	fmsub
	fmsubs
	fmul
	fmuls
	fnabs
	fneg
	fnmadd
	fnmadds
	fnmsub
	fnmsubs
	fres
	frsp
	frsqrte
	fsel
	fsqrt
	fsqrts
	fsub
	fsubs
	lfdu
	lfdux
	lfdx
	lfs
	lfsu
	lfsux
	lfsx
	lhbrx
	lwbrx
	mcrfs
	mcrxr
	mtfsb0
	mtfsb1
	mtfsfi
	mulhwu
	mullwo
	nego
	sc
	stfdu
	stfdux
	stfdx
	stfs
	stfsu
	stfsux
	stfsx
	sthbrx
	stwbrx
	subfo
	subfme
	subfmeo
	subfze
	subfzeo
	tw
	twi
	CHECK:
	crxor
	creqv
	*/

[ianfixes]

I'm not sure whether there is any logical grouping to these instructions, but since I doubt anyone is likely to implement them all in a single pull request it would be acceptable to break this into smaller issues and close it. That doesn't need to happen until someone is prepared to tackle the development itself and can (hopefully) decide what those groupings should be.

[retokromer]

We could switch the [ ] to[x] here when an instruction is implemented. I am not planning to do all myself, but a few should be present, in my opinion, and I volunteer to implement those.

[ianfixes]

Understood. Still, I think only you (and I, as admin) would be able to actually change the boxes from unchecked to checked.

Which is essentially me saying "I'm optimistic that we are going to get a lot of contributors implementing all of these instructions..." So, probably not a big deal.

[retokromer]

If you wish so, then of course I can try to split the current 74 instructions into a set of logical groups.

[ianfixes]

@retokromer please do recreate this issue as multiple issues on https://github.com/emaculation/macemu/issues, broken into logical groups. My nightmare scenario here would be that github repeatedly closes this issue via PRs and we repeatedly re-open it.