New (Submission by Bruce Robinson <brucer@pmccorp.com>).

3 files changed, 90 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/mips/rm52xx/include/rm5231.h b/c/src/lib/libcpu/mips/rm52xx/include/rm5231.h
new file mode 100644
index 0000000000..a10837c396
--- /dev/null
+++ b/c/src/lib/libcpu/mips/rm52xx/include/rm5231.h
@@ -0,0 +1,12 @@
+/*
+ *  MIPS RM5231 specific information
+ *
+ *  rm5231.h,v 1.0 2004/06/23 19:54:22
+ */
+
+#ifndef __RM5231_h
+#define __RM5231_h
+
+#define RM5231_MAXIMUM_VECTORS MIPS_INTERRUPT_BASE+8
+
+#endif
diff --git a/c/src/lib/libcpu/mips/rm52xx/vectorisrs/maxvectors.c b/c/src/lib/libcpu/mips/rm52xx/vectorisrs/maxvectors.c
new file mode 100644
index 0000000000..d72273c582
--- /dev/null
+++ b/c/src/lib/libcpu/mips/rm52xx/vectorisrs/maxvectors.c
@@ -0,0 +1,24 @@
+/* 
+ *  This file contains the maximum number of vectors.  This can not
+ *  be determined without knowing the RTEMS CPU model. 
+ *
+ *  COPYRIGHT (c) 1989-2000.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  maxvectors.c,v 1.1.6.1 2003/09/04 18:45:49 joel Exp
+ */
+
+/*
+ *  Reserve first 32 for exceptions.
+ */
+
+
+#include <rtems.h>
+#include <libcpu/rm5231.h>
+
+unsigned int mips_interrupt_number_of_vectors = RM5231_MAXIMUM_VECTORS;
+
diff --git a/c/src/lib/libcpu/mips/rm52xx/vectorisrs/vectorisrs.c b/c/src/lib/libcpu/mips/rm52xx/vectorisrs/vectorisrs.c
new file mode 100644
index 0000000000..070884228b
--- /dev/null
+++ b/c/src/lib/libcpu/mips/rm52xx/vectorisrs/vectorisrs.c
@@ -0,0 +1,54 @@
+/*
+ *  RM5231 Interrupt Vectoring 
+ *
+ *  vectorisrs.c,v 1.6 2004/06/23 18:16:36
+ */
+
+#include <rtems.h>
+#include <stdlib.h>
+#include <libcpu/rm5231.h>
+
+void mips_default_isr( int vector );
+
+#define CALL_ISR(_vector,_frame) \
+  do { \
+    if ( _ISR_Vector_table[_vector] ) \
+      (_ISR_Vector_table[_vector])(_vector,_frame); \
+    else \
+      mips_default_isr(_vector); \
+  } while (0)
+
+#include <rtems/bspIo.h>  /* for printk */
+
+void mips_vector_isr_handlers( CPU_Interrupt_frame *frame )
+{
+  unsigned int sr;
+  unsigned int cause;
+  unsigned int i;
+  unsigned int mask;
+
+  mips_get_sr( sr );
+  mips_get_cause( cause );
+
+  cause &= (sr & SR_IMASK);
+  cause >>= CAUSE_IPSHIFT;
+
+  for ( i=1, mask=0x80 ; i<=8 ; i++, mask >>= 1 ) {
+    if ( cause & mask )
+      CALL_ISR( MIPS_INTERRUPT_BASE + 8 - i, frame );
+  }
+}
+
+void mips_default_isr( int vector )
+{
+  unsigned int sr;
+  unsigned int cause;
+
+  mips_get_sr( sr );
+  mips_get_cause( cause );
+
+  printk( "Unhandled isr exception: vector 0x%02x, cause 0x%08X, sr 0x%08X\n",
+      vector, cause, sr );
+  rtems_fatal_error_occurred(1);
+}
+