Skip to content

L
linux
Commit cb1a895f authored by Asit K. Mallick's avatar Asit K. Mallick Committed by David Mosberger
Browse files
Options

[PATCH] fix Itanium copy_user for uninitialized NaT 

Fix use of unitialized register to avoid NaT consumption fault.
parent afaeab62
Hide whitespace changes
Inline Side-by-side
Showing with 5 additions and 3 deletions
arch/ia64/lib/copy_user.S
View file @ cb1a895f
...@@ -237,15 +237,17 @@ GLOBAL_ENTRY(__copy_user) ...@@ -237,15 +237,17 @@ GLOBAL_ENTRY(__copy_user)
.copy_user_bit##rshift: \ .copy_user_bit##rshift: \
1: \ 1: \
EX(.failure_out,(EPI) st8 [dst1]=tmp,8); \ EX(.failure_out,(EPI) st8 [dst1]=tmp,8); \
(EPI_1) shrp tmp=val1[PIPE_DEPTH-3],val1[PIPE_DEPTH-2],rshift; \ (EPI_1) shrp tmp=val1[PIPE_DEPTH-2],val1[PIPE_DEPTH-1],rshift; \
EX(3f,(p16) ld8 val1[0]=[src1],8); \ EX(3f,(p16) ld8 val1[1]=[src1],8); \
(p16) mov val1[0]=r0; \
br.ctop.dptk 1b; \ br.ctop.dptk 1b; \
;; \ ;; \
br.cond.sptk.many .diff_align_do_tail; \ br.cond.sptk.many .diff_align_do_tail; \
2: \ 2: \
(EPI) st8 [dst1]=tmp,8; \ (EPI) st8 [dst1]=tmp,8; \
(EPI_1) shrp tmp=val1[PIPE_DEPTH-3],val1[PIPE_DEPTH-2],rshift; \ (EPI_1) shrp tmp=val1[PIPE_DEPTH-2],val1[PIPE_DEPTH-1],rshift; \
3: \ 3: \
(p16) mov val1[1]=r0; \
(p16) mov val1[0]=r0; \ (p16) mov val1[0]=r0; \
br.ctop.dptk 2b; \ br.ctop.dptk 2b; \
;; \ ;; \
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7