csky: Fixup vdsp&fpu issues in kernel (3dfc242f) · Commits · 戴 / test

This fixup is continue to commit (csky: fixup remove vdsp implement for kernel.) and in that patch I didn't finish the job. We must forbid gcc to generate any vdsp & fpu instructions and remove vdsp asm in memmove.S. eg: For GCC it's -mcpu=ck860 and For AS it's -Wa,-mcpu=ck860fv Signed-off-by:

Guo Ren <ren_guo@c-sky.com>

arch/csky/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -36,7 +36,7 @@ endif

		ifneq ($(CSKYABI),)
		MCPU_STR = $(CPUTYPE)$(FPUEXT)$(VDSPEXT)$(TEEEXT)
		KBUILD_CFLAGS += -mcpu=$(MCPU_STR)
		KBUILD_CFLAGS += -mcpu=$(CPUTYPE) -Wa,-mcpu=$(MCPU_STR)
		KBUILD_CFLAGS += -DCSKYCPU_DEF_NAME=\"$(MCPU_STR)\"
		KBUILD_CFLAGS += -msoft-float -mdiv
		KBUILD_CFLAGS += -fno-tree-vectorize

arch/csky/abiv2/memmove.S

+1 −5

Original line number	Diff line number	Diff line
		@@ -35,11 +35,7 @@ ENTRY(memmove)
		.L_len_larger_16bytes:
		subi r1, 16
		subi r0, 16
		#if defined(__CSKY_VDSPV2__)
		vldx.8 vr0, (r1), r19
		PRE_BNEZAD (r18)
		vstx.8 vr0, (r0), r19
		#elif defined(__CK860__)
		#if defined(__CK860__)
		ldw r3, (r1, 12)
		stw r3, (r0, 12)
		ldw r3, (r1, 8)

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