2008-10-02 Joel Sherrill <joel.sherrill@oarcorp.com>

	* .cvsignore, ChangeLog, Makefile.am, context_init.c, context_switch.S,
	cpu.c, cpu_asm.c, preinstall.am, varvects.S, varvects.h, rtems/asm.h,
	rtems/score/cpu.h, rtems/score/cpu_asm.h, rtems/score/m32c.h,
	rtems/score/types.h: New files.

1 files changed, 61 insertions, 0 deletions

diff --git a/cpukit/score/cpu/m32c/context_init.c b/cpukit/score/cpu/m32c/context_init.c
new file mode 100644
index 0000000000..e975eeab00
--- /dev/null
+++ b/cpukit/score/cpu/m32c/context_init.c
@@ -0,0 +1,61 @@
+/*
+ */
+
+#include <stdint.h>
+#include <rtems/system.h>
+
+typedef struct {
+  uint16_t sbLow;
+  uint16_t sbHigh;       /* push/pop sb */
+  uint16_t flg;          /* push/pop flg */
+  uint32_t a1;           /* pushm */
+  uint32_t a0;
+  uint32_t r0r2;
+  uint32_t r1r3;
+  uint16_t frameLow;     /* exitd */
+  uint16_t frameHigh;
+  uint16_t startLow;
+  uint16_t startHigh;
+  uint16_t zero;
+} Starting_Frame;
+
+#define _get_sb( _sb ) \
+  asm volatile( "stc sb, %0" : "=r" (_sb))
+
+void _CPU_Context_Initialize(
+  Context_Control  *the_context,
+  uint32_t         *stack_base,
+  size_t            size,
+  uint32_t          new_level,
+  void             *entry_point,
+  bool              is_fp
+)
+{
+  void *stackEnd = stack_base;
+  register uint32_t sb;
+  Starting_Frame *frame;
+
+  _get_sb( sb );
+  stackEnd += size;
+
+  frame = (Starting_Frame *)stackEnd;
+  frame--;
+
+  frame->zero = 0;
+  frame->sbLow = ((uint32_t)sb) & 0xffff;
+  frame->sbHigh = ((uint32_t)sb >> 16) & 0xffff;
+  frame->flg = 0x80;        /* User stack */
+  if ( !new_level )         /* interrupt level 0 --> enabled */
+    frame->flg |= 0x40;
+  frame->a0 = 0x01020304;
+  frame->a1 =0xa1a2a3a4; 
+  frame->r0r2 = 0;
+  frame->r1r3 = 0;
+  frame->frameLow = ((uint32_t)frame)  & 0xffff;
+  frame->frameHigh = ((uint32_t)frame >> 16) & 0xffff;
+  frame->startLow = ((uint32_t)entry_point) & 0xffff;
+  frame->startHigh = ((uint32_t)entry_point >> 16) & 0xffff;
+
+  the_context->sp = (uint32_t)frame;
+  the_context->fb = (uint32_t)&frame->frameLow;
+}