Commit 35ff802a authored Dec 31, 2018 by Guo Ren

csky: fixup remove vdsp implement for kernel.



The vr regs for vdsp only saved in task_switch not in every
exception trap-in. The memcpy with vdsp instructions will
destroy the vr regs for user space applications.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>

parent 2054f4af

arch/csky/abiv2/memcpy.S

+1 −7

Original line number	Diff line number	Diff line
		@@ -27,13 +27,7 @@ ENTRY(memcpy)

		LABLE_ALIGN
		.L_len_larger_16bytes:
		#if defined(__CSKY_VDSPV2__)
		vldx.8 vr0, (r1), r19
		PRE_BNEZAD (r18)
		addi r1, 16
		vstx.8 vr0, (r0), r19
		addi r0, 16
		#elif defined(__CK860__)
		#if defined(__CK860__)
		ldw r3, (r1, 0)
		stw r3, (r0, 0)
		ldw r3, (r1, 4)