git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@5584 35acf78f-673a-0410-8e92-d51de3d6d3f4

2013-04-10 13:48:02 +00:00 · 2013-04-10 13:48:02 +00:00 · 411d89eb6b
parent 2585da7468
commit 411d89eb6b
1 changed files with 10 additions and 0 deletions
--- a/os/ports/GCC/PPC/ivor.s
+++ b/os/ports/GCC/PPC/ivor.s
@ -86,6 +86,11 @@ _IVOR10:
        lis         %r3, 0x0800             /* DIS bit mask.                */
        mtspr       336, %r3                /* TSR register.                */

+#if PPC_USE_IRQ_PREEMPTION
+        /* Allows preemption while executing the software handler.*/
+        wrteei      1
+#endif
+
 #if CH_DBG_SYSTEM_STATE_CHECK
        bl          dbg_check_enter_isr
        bl          dbg_check_lock_from_isr
@ -96,6 +101,11 @@ _IVOR10:
        bl          dbg_check_leave_isr
 #endif

+#if PPC_USE_IRQ_PREEMPTION
+        /* Prevents preemption again.*/
+        wrteei      0
+#endif
+
        /* System tick handler invocation.*/
 #if CH_DBG_SYSTEM_STATE_CHECK
        bl          dbg_check_lock