rvinterf: begin change to backslash escape output format Right now throughout the rvinterf suite, any time we emit output that is expected to be ASCII, but may contain non-printable garbage, we use 'cat -v' form of garbage character representation. Unfortunately, this transformation is lossy (can't be reversed 100% reliably in the user's wetware), hence we would like to migrate to C-style backslash escapes, including doubling of any already-present backslashes - this escape mechanism is lossless. Begin this change by converting the output of RV and L1 traces in rvinterf and rvtdump.

	.text
	.code	32
	.globl	memcpy32
memcpy32:
1:	subs	r2, r2, #4
	ldrcs	r3, [r1], #4
	strcs	r3, [r0], #4
	bhi	1b
	bx	lr