UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

microblaze: Move PT_MODE saving to delay slot 

We can save one more instruction if PT_MODE is saved in delay slot

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-06-22 20:49:46 +02:00
parent 80c5ff6b9b
commit 0a6b08fda6
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/microblaze/kernel/entry.S
View File

@ -728,10 +728,8 @@ C_ENTRY(_interrupt):
/* MS: Make room on the stack -> activation record */
addik r1, r1, -STATE_SAVE_SIZE;
SAVE_REGS
swi r1, r1, PTO + PT_MODE; /* 0 - user mode, 1 - kernel mode */
brid 2f;
nop; /* MS: Fill delay slot */
swi r1, r1, PTO + PT_MODE; /* 0 - user mode, 1 - kernel mode */
1:
/* User-mode state save. */
/* MS: get the saved current */