Skip to content
GitLab
Explore
Sign in
Primary navigation
Search or go to…
Project
F
FlightOS
Manage
Activity
Members
Labels
Plan
Issues
Issue boards
Milestones
Wiki
Code
Merge requests
Repository
Branches
Commits
Tags
Repository graph
Compare revisions
Snippets
Deploy
Releases
Package registry
Model registry
Operate
Terraform modules
Monitor
Incidents
Service Desk
Analyze
Value stream analytics
Contributor analytics
Repository analytics
Model experiments
Help
Help
Support
GitLab documentation
Compare GitLab plans
Community forum
Contribute to GitLab
Provide feedback
Terms and privacy
Keyboard shortcuts
?
Snippets
Groups
Projects
Show more breadcrumbs
Armin Luntzer
FlightOS
Commits
71a5ccec
Commit
71a5ccec
authored
6 years ago
by
Armin Luntzer
Browse files
Options
Downloads
Patches
Plain Diff
SPARC trap entry: reorder instruction to save one stall cycle in case
static branch prediction is not enabled
parent
02c736d3
No related branches found
No related tags found
No related merge requests found
Changes
1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
arch/sparc/kernel/etrap.S
+1
-1
1 addition, 1 deletion
arch/sparc/kernel/etrap.S
with
1 addition
and
1 deletion
arch/sparc/kernel/etrap.S
+
1
−
1
View file @
71a5ccec
...
...
@@ -37,8 +37,8 @@ trap_setup:
/
*
Calculate
mask
of
trap
window
.
See
if
from
user
*
or
kernel
and
branch
conditionally
.
*/
mov
1
,
%
t_twinmask
andcc
%
t_psr
,
PSR_PS
,
%
g0
!
fromsupv_p
=
(
psr
&
PSR_PS
)
mov
1
,
%
t_twinmask
be
trap_setup_from_user
!
nope
,
from
user
mode
sll
%
t_twinmask
,
%
t_psr
,
%
t_twinmask
!
t_twinmask
=
(
1
<<
psr
)
...
...
This diff is collapsed.
Click to expand it.
Preview
0%
Loading
Try again
or
attach a new file
.
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Save comment
Cancel
Please
register
or
sign in
to comment