STOP: optimize size of stop images

1) optimize scom with no rc and directly inline asm(saved for 2K :D)
2) initialize all variables(doesnt really save size, just good guideline)
3) loop both cores when block is big and redundant(saved only 50B -_-)
   (50b for 3 blocks, each block saves 17b, or 4 instructions)
4) improvement on history update(saved 500B more :))
5) functionalize the exit catchup routine which is identical twice
   (this back fired and cost us 100B :()
6) functionalize the eval eimr override macro which is identical twice
   (saved 130B :|)
7) finally the saving is about 2728B on CME
8) apply history update tech to sgpe, found bug in the tech, fixed
   (but our saving is back to ~2500B)
9) clean up sgpe redundent ex branching code
   (same as cme saved only about ~60B)
10) rebase

Change-Id: I3664d6a2dcab85f896a583852afde948e635bd02
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/34777
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: AMIT KUMAR <akumar3@us.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_cme_stop_irq_handlers.c b/import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_cme_stop_irq_handlers.c
index 9c9c7294..e8345e92 100644
--- a/import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_cme_stop_irq_handlers.c
+++ b/import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_cme_stop_irq_handlers.c
@@ -47,7 +47,7 @@ p9_cme_stop_spwu_handler(void* arg, PkIrqId irq)
     PkMachineContext ctx;
     int      sem_post = 0;
     uint32_t raw_spwu = (in32(CME_LCL_EISR) & BITS32(14, 2)) >> SHIFT32(15);
-    uint64_t scom_data;
+    uint64_t scom_data = 0;
 
     if (raw_spwu & CME_MASK_C0)
     {
@@ -190,7 +190,8 @@ void
 p9_cme_stop_db2_handler(void* arg, PkIrqId irq)
 {
     PkMachineContext ctx;
-    cppm_cmedb2_t    db2c0, db2c1;
+    cppm_cmedb2_t    db2c0 = {0};
+    cppm_cmedb2_t    db2c1 = {0};
 
     MARK_TRAP(STOP_DB2_HANDLER)
     PK_TRACE_INF("DB2 Handler");