[M3commit] CVS Update: cm3

[Jay Krell]

CVSROOT:	/usr/cvs
Changes by:	jkrell at birch.	13/10/19 05:33:08

Modified files:
	cm3/m3-sys/m3middle/src/: Target.i3 Target.m3 
	./: Target.i3 Target.m3 
	cm3/m3-sys/cminstall/src/config-no-install/: ARMEL_LINUX 
	./: ARMEL_LINUX 
	cm3/m3-sys/m3cc/src/: platforms.quake m3makefile 
Added files:
	cm3/m3-sys/cminstall/src/config-no-install/: ARM_LINUX 
	                                             ARM_LINUX.common 
	./: ARM_LINUX ARM_LINUX.common 

Log message:
	untested:
	repurpose ARMEL_LINUX to modern Raspberry Pi-compatible hardfloat, vfp, v6
	Debian's armhf is similar but v7
	add ARM_LINUX synonym
	
	The thinking would be, speculative, that there is just
	ARM_LINUX and it is little endian, vfp, hardfloat, v6
	ARMEL_LINUX is for temporary compatibility with Mika
	
	Abandon older big-endian and soft-float ARM.
	Not that much of our code knows the difference.
	
	Alternative proposal with broader support would be 3 targets:
	ARM_LINUX    big endian softfloat
	ARMEL_LINUX  little endian soft float
	ARMHF_LINUX  little endian hard float vfp v6 almost like Debian's armhf (they are v7)
	
	But again, almost none of this matters.
	Very little of our code is target-specific.
	Most of the target-specific code is #ifdef'ed C or separate C files.
	
	The frontend has the following little bits of target-specificy:
	jmpbuf size (there is a plan to remove it...)
	endian (and very little of it, could just act the same on both)
	word size (the hardest to do anything about)