2001-01-08 Joel Sherrill <joel@OARcorp.com>

	* Added r46xx directory.
	* Makefile.am, configure.in: Modified to reflect addition of r46xx.
	* shared/interrupts/installisrentries.c: Fixed typo.
	* r46xx/.cvsignore, r46xx/Makefile.am,
	r46xx/vectorisrs/.cvsignore, r46xx/vectorisrs/Makefile.am,
	r46xx/vectorisrs/vectorisrs.c: New files.

1 files changed, 46 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/mips/r46xx/vectorisrs/vectorisrs.c b/c/src/lib/libcpu/mips/r46xx/vectorisrs/vectorisrs.c
new file mode 100644
index 0000000000..8f2a2f1c3c
--- /dev/null
+++ b/c/src/lib/libcpu/mips/r46xx/vectorisrs/vectorisrs.c
@@ -0,0 +1,46 @@
+/*
+ *  $Id$
+ */
+
+#include <rtems.h>
+#include <stdlib.h>
+
+#define mips_get_cause( _cause ) \
+  do { \
+    asm volatile( "mfc0 %0, $13; nop" : "=g" (_cause) :  ); \
+  } while (0)
+
+#define CALL_ISR(_vector) \
+  do { \
+    if ( _ISR_Vector_table[_vector] ) \
+      (_ISR_Vector_table[_vector])(_vector); \
+    else \
+      mips_default_exception(_vector); \
+  } while (0)
+
+void mips_default_exception( int vector )
+{
+  printk( "Unhandled exception %d\n", vector );
+  rtems_fatal_error_occurred(1);
+}
+
+void mips_vector_isr_handlers( void )
+{
+  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;
+
+  /* XXX check this and think about it. */
+
+  for ( i=1, mask=0x80 ; i<=8 ; i++, mask >>= 1 ) {
+    if ( cause & mask )
+      CALL_ISR( 8 - i );
+  }
+}