i386: move idle thread into BSP layer

c/src/lib/libbsp/i386/pc386/Makefile.am

@@ -148,6 +148,7 @@ include_HEADERS += ../../i386/shared/comm/uart.h
 # startup
 libbsp_a_SOURCES += ../../shared/bsppredriverhook.c
 libbsp_a_SOURCES += startup/bspgetworkarea.c
+libbsp_a_SOURCES += startup/bspidle.S
 libbsp_a_SOURCES += startup/bspstart.c
 libbsp_a_SOURCES += startup/bspcmdline.c
 libbsp_a_SOURCES += ../../shared/bspclean.c

c/src/lib/libbsp/i386/pc386/include/bsp.h

@@ -213,6 +213,9 @@ void rtems_irq_mngt_init(void);          /* from 'irq_init.c' */
     } while ( 0 )
 #endif /* edison */
 
+void *bsp_idle_thread( uintptr_t ignored );
+#define BSP_IDLE_TASK_BODY bsp_idle_thread
+
 void kbd_reset_setup(char *str, int *ints);   /* from 'pc_keyb.c' */
 size_t read_aux(char * buffer, size_t count); /* from 'ps2_mouse.c'  */
 

c/src/lib/libbsp/i386/pc386/startup/bspidle.S

@@ -0,0 +1,19 @@
+/*
+ * Idle Thread Body
+ *
+ * COPYRIGHT (c) 2016.
+ * 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.org/license/LICENSE.
+ */
+
+#include <rtems/asm.h>
+
+.p2align 4
+
+PUBLIC(bsp_idle_thread)
+SYM(bsp_idle_thread):
+hltloop: hlt
+  jmp hltloop