lkml.org 
[lkml]   [2018]   [Dec]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 03/14] csky: fixup remove vdsp implement for kernel.
Date
From: Guo Ren <ren_guo@c-sky.com>

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>
---
arch/csky/abiv2/memcpy.S | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/csky/abiv2/memcpy.S b/arch/csky/abiv2/memcpy.S
index 987fec6..145bf3a 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)
--
2.7.4
\
 
 \ /
  Last update: 2018-12-31 16:34    [W:0.039 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site