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| author | Guo Ren <ren_guo@c-sky.com> | 2018-12-31 01:19:29 +0800 |
|---|---|---|
| committer | Guo Ren <ren_guo@c-sky.com> | 2018-12-31 22:56:59 +0800 |
| commit | 35ff802af1c49dab21af8ef47b492ff952831d72 (patch) | |
| tree | ce6813c19a11e1b40530ef138fd11cd235e4304e /arch/csky/abiv2/memcpy.S | |
| parent | 2054f4af19575d9d2a43bcefa48d2e64f10a25de (diff) | |
| download | lwn-35ff802af1c49dab21af8ef47b492ff952831d72.tar.gz lwn-35ff802af1c49dab21af8ef47b492ff952831d72.zip | |
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>
Diffstat (limited to 'arch/csky/abiv2/memcpy.S')
| -rw-r--r-- | arch/csky/abiv2/memcpy.S | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/csky/abiv2/memcpy.S b/arch/csky/abiv2/memcpy.S index 987fec60ab97..145bf3a9360e 100644 --- a/arch/csky/abiv2/memcpy.S +++ b/arch/csky/abiv2/memcpy.S @@ -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) |