score: Add CPU_Exception_frame

Add CPU port type CPU_Exception_frame and function
_CPU_Exception_frame_print().

The CPU ports of avr, bfin, h8300, lm32, m32c, m32r, m68k, nios2, sh,
sparc64, and v850 use an empty default implementation of
_CPU_Exception_frame_print().

Add rtems_exception_frame and rtems_exception_frame_print().

Add RTEMS_FATAL_SOURCE_EXCEPTION for CPU exceptions.  Use rtems_fatal()
with source RTEMS_FATAL_SOURCE_EXCEPTION in CPU ports of i386, powerpc,
and sparc for unexpected exceptions.

Add third parameter to RTEMS_BSP_CLEANUP_OPTIONS() which controls the
BSP_PRINT_EXCEPTION_CONTEXT define used in the default
bsp_fatal_extension().

Add test sptests/spfatal26.

1 files changed, 22 insertions, 0 deletions

diff --git a/cpukit/score/cpu/no_cpu/rtems/score/cpu.h b/cpukit/score/cpu/no_cpu/rtems/score/cpu.h
index 9ab1f264c8..fe63aea3fc 100644
--- a/cpukit/score/cpu/no_cpu/rtems/score/cpu.h
+++ b/cpukit/score/cpu/no_cpu/rtems/score/cpu.h
@@ -1264,6 +1264,28 @@ void _CPU_Context_restore_fp(
 );
 
 /**
+ *  @brief The set of registers that specifies the complete processor state.
+ *
+ *  The CPU exception frame may be available in fatal error conditions like for
+ *  example illegal opcodes, instruction fetch errors, or data access errors.
+ *
+ *  @see rtems_fatal(), RTEMS_FATAL_SOURCE_EXCEPTION, and
+ *  rtems_exception_frame_print().
+ */
+typedef struct {
+  uint32_t processor_state_register;
+  uint32_t integer_registers [1];
+  double float_registers [1];
+} CPU_Exception_frame;
+
+/**
+ *  @brief Prints the exception frame via printk().
+ *
+ *  @see rtems_fatal() and RTEMS_FATAL_SOURCE_EXCEPTION.
+ */
+void _CPU_Exception_frame_print( const CPU_Exception_frame *frame );
+
+/**
  *  @ingroup CPUEndian
  *  The following routine swaps the endian format of an unsigned int.
  *  It must be static because it is referenced indirectly.