diff options
| author | Hesham ALMatary <heshamelmatary@gmail.com> | 2014-09-15 17:33:30 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2014-09-16 09:53:01 -0500 |
| commit | e0aef221a2c910c8caa01a1d97e886042df1a9ac (patch) | |
| tree | 56223df2b4acfd3bc82da8abdf2b1fa18d14057b /cpukit/score/cpu/or1k | |
| parent | or1ksim: work-around to make or1ksim tick timer accurate. (diff) | |
| download | rtems-e0aef221a2c910c8caa01a1d97e886042df1a9ac.tar.bz2 | |
score/cpu/or1k: Follow no_cpu ISR_Handler algorithm.
This patch adjusts ISR_Handler to exactly follow the pseudo code introduced
in
http://rtems.org/onlinedocs/doc-current/share/rtems/html/porting/Interrupts-Interrupt-Dispatching.html
It adds two new checkings on _Thread_Dispatch_disable_level and _ISR_Nest_level
after returning from the C handler.
Diffstat (limited to 'cpukit/score/cpu/or1k')
| -rw-r--r-- | cpukit/score/cpu/or1k/or1k-exception-handler-low.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/cpukit/score/cpu/or1k/or1k-exception-handler-low.S b/cpukit/score/cpu/or1k/or1k-exception-handler-low.S index 3a0425b6d5..96d0c8e740 100644 --- a/cpukit/score/cpu/or1k/or1k-exception-handler-low.S +++ b/cpukit/score/cpu/or1k/or1k-exception-handler-low.S @@ -149,6 +149,16 @@ jump_to_c_handler: l.sw 0(r6), r5 l.sw 0(r8), r7 + /* Check if _ISR_Nest_level > 0 */ + l.sfgtui r5, 0 + l.bf exception_frame_restore + l.nop + + /* Check if _Thread_Dispatch_disable_level > 0 */ + l.sfgtui r7, 0 + l.bf exception_frame_restore + l.nop + /* Check if dispatch needed */ l.movhi r31, hi(DISPATCH_NEEDED) l.ori r31, r31, lo(DISPATCH_NEEDED) |