Changeset 231 for soft/giet_vm/sys/sys_handler.c

Timestamp:

Mar 5, 2013, 1:42:57 PM (12 years ago)

Author:

joannou

Message:

• Bugfix in Interruption mechanism :
  • _it_mask() and _it_restore() functions now share a global array indexed by the proc_id (used a simple global variable before => problem with multiproc)
  • added 2 new fuctions _it_enable() and _it_disable() that only affect the IE bit of the status register in COP0
  • replaced interrupt masking/restoring arround _ctx_switch() in sys_handler by a simple interrupt disabling before the call to _ctx_switch (restoring after a _ctx_switch wouldn't restore the correct task's status register)
  • replaced the use of _ctx_switch in _exit() by a call to _context_switch() (this function actually does the interrupt disabling)
• Added some comments in the ctx_handler.h
• Added the delay reset in the idle task (ctx_handler.c)
• Added a new irq type (PTI)
  • Modifications in xml_parser.c to accept PTI irq type (now used in xml mappings)
  • Added the test on the irq type in the _irq_demux() function. This leads to a different argument passed to the ISR (i.e. either channel_id or irq_id (aka icuid) )

File:

• soft/giet_vm/sys/sys_handler.c (modified) (2 diffs)

soft/giet_vm/sys/sys_handler.c

@@ -94 +94 @@
 
     // deschedule
-    _ctx_switch();
+    _context_switch();
 } 
 
@@ -232 +232 @@
 ////////////////////////////////////////////////////////////////
 void _context_switch() {
-    _it_mask();
+    _it_disable();
     _ctx_switch();
-    _it_restore();
 }