Switch to using a shared main() for all of the embedded BSPs

based on the GNU tools.  This usually involved correcting the
type of bsp_start(), bsp_cleanup(), adjusting the start code to
call the right start routine (the shared boot_card()), and then
removing code from bsp_start() which was performed in the new
boot_card()/main() path.

c/src/lib/libbsp/sparc/erc32/include/bsp.h

@@ -171,8 +171,6 @@ extern rtems_configuration_table BSP_Configuration;     /* owned by BSP */
 
 extern rtems_cpu_table           Cpu_table;             /* owned by BSP */
 
-extern rtems_unsigned32          bsp_isr_level;
-
 #ifdef __cplusplus
 }
 #endif

c/src/lib/libbsp/sparc/erc32/start/startsis.s

@@ -289,8 +289,8 @@ zerobss:
         mov     %0, %o2                 ! environ
         mov     %0, %o1                 ! argv
         mov     %0, %o0                 ! argc
-        call    SYM(main)
-        sub     %sp, 0x60, %sp          ! room for main to save args
+        call    SYM(boot_card)
+        sub     %sp, 0x60, %sp          ! room for boot_card to save args
         nop
 
         PUBLIC(BSP_fatal_return)

c/src/lib/libbsp/sparc/erc32/startsis/startsis.s

@@ -289,8 +289,8 @@ zerobss:
         mov     %0, %o2                 ! environ
         mov     %0, %o1                 ! argv
         mov     %0, %o0                 ! argc
-        call    SYM(main)
-        sub     %sp, 0x60, %sp          ! room for main to save args
+        call    SYM(boot_card)
+        sub     %sp, 0x60, %sp          ! room for boot_card to save args
         nop
 
         PUBLIC(BSP_fatal_return)

c/src/lib/libbsp/sparc/erc32/startup/Makefile.in

@@ -11,14 +11,10 @@ PROJECT_ROOT = @PROJECT_ROOT@
 PGM=${ARCH}/startup.rel
 
 # C source names, if any, go here -- minus the .c
-C_PIECES=bspclean bspstart sbrk setvec spurious
+C_PIECES=bspclean bspstart main sbrk setvec spurious
 C_FILES=$(C_PIECES:%=%.c)
 C_O_FILES=$(C_PIECES:%=${ARCH}/%.o)
 
-CC_PIECES=rtems-ctor
-CC_FILES=$(CC_PIECES:%=%.cc)
-CC_O_FILES=$(CC_PIECES:%=${ARCH}/%.o)
-
 H_FILES=
 
 # Assembly source names, if any, go here -- minus the .s
@@ -29,10 +25,6 @@ S_O_FILES=$(S_FILES:%.S=${ARCH}/%.o)
 SRCS=linkcmds $(C_FILES) $(CC_FILES) $(H_FILES) $(S_FILES)
 OBJS=$(C_O_FILES)
 
-# We install the RTEMS constructor as a separate .o
-# so it can be easily place correctly by the compiler config file.
-INSTALLED_O_FILES=$(ARCH)/rtems-ctor.o
-
 include $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg
 include $(RTEMS_ROOT)/make/leaf.cfg
 
@@ -61,6 +53,5 @@ CLOBBER_ADDITIONS +=
 ${PGM}: ${SRCS} ${OBJS}
 	$(make-rel)
 
-all:	${ARCH} $(SRCS) $(INSTALLED_O_FILES) $(PGM)
+all:	${ARCH} $(SRCS) $(PGM)
 	$(INSTALL) $(srcdir)/linkcmds ${PROJECT_RELEASE}/lib
-	$(INSTALL_VARIANT) $(INSTALLED_O_FILES) ${PROJECT_RELEASE}/lib

c/src/lib/libbsp/sparc/erc32/startup/bspstart.c

@@ -372,9 +372,4 @@ void bsp_start( void )
    */
 
   rtems_libio_config( &BSP_Configuration, BSP_LIBIO_MAX_FDS );
- 
-  bsp_isr_level = rtems_initialize_executive_early(
-     &BSP_Configuration,
-     &Cpu_table
-  );
 }