From aeb744f3e5debfa052765d612462af776dd620a2 Mon Sep 17 00:00:00 2001
From: Patrick Williams <iawillia@us.ibm.com>
Date: Thu, 3 Jun 2010 17:08:50 -0500
Subject: Add stub for syscall.

---
 src/kernel/cpumgr.C  |  3 ++-
 src/kernel/makefile  |  1 +
 src/kernel/start.S   | 11 ++++++++++-
 src/kernel/syscall.C |  7 +++++++
 4 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 src/kernel/syscall.C

diff --git a/src/kernel/cpumgr.C b/src/kernel/cpumgr.C
index 3c2c3b907..f20139dd1 100644
--- a/src/kernel/cpumgr.C
+++ b/src/kernel/cpumgr.C
@@ -46,7 +46,8 @@ void CpuManager::startCPU(ssize_t i)
 	// Initialize CPU.
 	cpu->cpu = i;
 	cpu->scheduler = new Scheduler();
-	cpu->kernel_stack = PageManager::allocatePage(4);
+	cpu->kernel_stack = 
+	    (void*) (((uint64_t)PageManager::allocatePage(4)) + 16320);
 	
 	// Create idle task.
 	task_t * idle_task = TaskManager::createIdleTask();
diff --git a/src/kernel/makefile b/src/kernel/makefile
index 3ff471de2..d3a586e8d 100644
--- a/src/kernel/makefile
+++ b/src/kernel/makefile
@@ -2,6 +2,7 @@ OBJDIR = ../../obj
 include ../../config.mk
 
 OBJS = start.o kernel.o console.o pagemgr.o heapmgr.o taskmgr.o cpumgr.o
+OBJS += syscall.o
 OBJECTS = $(addprefix ${OBJDIR}/, ${OBJS})
 
 all: ${OBJECTS}
diff --git a/src/kernel/start.S b/src/kernel/start.S
index 1ca4fdb62..f78b58c63 100644
--- a/src/kernel/start.S
+++ b/src/kernel/start.S
@@ -117,7 +117,7 @@ intvect_system_call:
 	
 	;// Retrieve processing address for interrupt.
     lis r1,intvect_system_call_finish_save@h
-    li r1,intvect_system_call_finish_save@l
+    ori r1,intvect_system_call_finish_save@l
 	;// Save interrupt address in SPRG0
     mtsprg0 r1
     
@@ -125,6 +125,15 @@ intvect_system_call:
     b kernel_save_task 		;// Save current task.
 
 intvect_system_call_finish_save:
+	;// Get TOC entry for kernel_execute_systemcall
+    lis r2, kernel_execute_systemcall@h
+    ori r2, r2, kernel_execute_systemcall@l
+    ld r0,0(r2)	;// Load call addr.
+    mtlr r0
+    ld r2,8(r2)	;// Load TOC base.
+
+    blr				;// Call kernel_execute_systemcall
+    nop
     b kernel_dispatch_task	;// Return to task.
 
 .org _start + 0xD00
diff --git a/src/kernel/syscall.C b/src/kernel/syscall.C
new file mode 100644
index 000000000..250c18ae2
--- /dev/null
+++ b/src/kernel/syscall.C
@@ -0,0 +1,7 @@
+#include <kernel/console.H>
+
+extern "C"
+void kernel_execute_systemcall()
+{
+    //printk("Syscall.\n");
+}
-- 
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