[M3commit] CVS Update: cm3

[Jay Krell]

CVSROOT:	/usr/cvs
Changes by:	jkrell at birch.	10/05/13 10:12:30

Modified files:
	cm3/m3-sys/cminstall/src/config-no-install/: SPARC64_SOLARIS 
	cm3/m3-sys/m3cc/src/: m3makefile 

Log message:
	On Solaris/sparc64, you have to declare
	what you use registers g2 and g3 for, such as "#scratch".
	cm3cg seems to often fail to do this.
	Resulting in the assembler giving errors.
	To work around this, and because it is unclearly recommended
	anyway, just don't use these registers at all.
	Until/unless the real fix is found.
	Maybe with a newer gcc, but I couldn't find evidence.
	A repro using C and gcc 4.5.0 would help much.
	Note that cm3cg doesn't always fail.
	The setting in m3cc/src/m3makefile did help.
	But not always.
	
	With this change I can now build a Solaris/sparc64 cm3.
	On 2.9 (couldn't do it anywhere before).
	But it just dumps core, oops.
	Possibly an alignment problem.
	
	SPARC64_SOLARIS:
	m3back_flags = "-mno-app-regs"
	
	m3cc/src/m3makefile:
	remove gcc_cv_as_sparc_register_op=yes
	with no users left, remove m3cc_env, get_env