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. --- cpukit/score/cpu/or1k/or1k-exception-handler-low.S | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/cpukit/score/cpu/or1k/or1k-exception-handler-low.S b/cpukit/score/cpu/or1k/or1k-exception-handler-low.S index b18c4a3..eb279d0 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) -- 1.9.3 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
