2004-10-05 Tomer Levi <Tomer.Levi@nsc.com>

        * configure.in: Support crx-*-*.
        * configure: regenerate.
        * crx/_exit.c: New file.
        * crx/_getenv.c: Ditto.
        * crx/_rename: Ditto.
        * crx/close.c: Ditto.
        * crx/configure.in: Ditto.
        * crx/crti.S: Ditto.
        * crx/crtn.S: Ditto.
        * crx/crt0.S: Ditto.
        * crx/dvz_hndl.c: Ditto.
        * crx/flg_hndl.c: Ditto.
        * crx/fstat.c: Ditto.
        * crx/getpid.c: Ditto.
        * crx/iad_hndl.c: Ditto.
        * crx/intable.c: Ditto.
        * crx/isatty.c: Ditto.
        * crx/kill.c: Ditto.
        * crx/lseek.c: Ditto.
        * crx/Makefile.in: Ditto.
        * crx/open.c: Ditto.
        * crx/putnum.c: Ditto.
        * crx/read.c: Ditto.
        * crx/sbrk.c: Ditto.
        * crx/sim.ld: Ditto.
        * crx/stat.c: Ditto.
        * crx/svc_hndl.c: Ditto.
        * crx/time.c: Ditto.
        * crx/und_hndl.c: Ditto.
        * crx/unlink.c: Ditto.
        * crx/write.c: Ditto.

1 files changed, 93 insertions, 0 deletions

diff --git a/libgloss/crx/crt0.S b/libgloss/crx/crt0.S
new file mode 100644
index 000000000..c49849728
--- /dev/null
+++ b/libgloss/crx/crt0.S
@@ -0,0 +1,93 @@
+ ##############################################################################
+ # crt0.S -- CRX default start-up routine                                     #
+ #                                                                            #
+ # Copyright (c) 2004 National Semiconductor Corporation                      #
+ #                                                                            #
+ # The authors hereby grant permission to use, copy, modify, distribute,      #
+ # and license this software and its documentation for any purpose, provided  #
+ # that existing copyright notices are retained in all copies and that this   #
+ # notice is included verbatim in any distributions. No written agreement,    #
+ # license, or royalty fee is required for any of the authorized uses.        #
+ # Modifications to this software may be copyrighted by their authors         #
+ # and need not follow the licensing terms described here, provided that      #
+ # the new terms are clearly indicated on the first page of each file where   #
+ # they apply.                                                                #
+ #                                                                            #
+ # This is the  start routine of your CRX program.                            #
+ # It is linked with your application automatically. You can use              #
+ # this routine as a template and modify it to your needs, yet this           #
+ # file must be supplied for the compiler.                                    #
+ # It is assumed that the following symbols are defined in your linker        #
+ # script: __STACK_START, __ISTACK_START, __DATA_START, __DATA_END,           #
+ # __DATA_IMAGE_START, __BSS_START, __BSS_END.                                #
+ ##############################################################################
+
+	.text
+	.align	4
+	.globl		_main
+	.globl		_start
+	.globl		_atexit
+	.globl		_exit
+	.globl		__dispatch_table
+
+_start:
+
+ #----------------------------------------------------------------------------#
+ # Initialize the stack pointers. The constants __STACK_START and             #
+ # __ISTACK_START should be defined in the linker script.                     #
+
+	movd	$__STACK_START, sp
+	movd	$__ISTACK_START, r0
+	mtpr    r0, isp
+
+ #----------------------------------------------------------------------------#
+ # Initialize the default sections according to the linker script.            #
+
+	movd	$__DATA_END, r4
+	subd	$__DATA_START, r4
+	movd	$__DATA_START, r2
+	movd	$__DATA_IMAGE_START, r3
+	bal	ra,	_memcpy
+	movd	$__BSS_END, r4
+	subd	$__BSS_START, r4
+	movd	$__BSS_START, r2
+	movd	$0, r3
+	bal	ra,	_memset
+
+ #----------------------------------------------------------------------------#
+ # Initialize the intbase (pointer to the dispatch table).                    #
+
+	movd	$__dispatch_table, r0
+	mtpr    r0, intbase
+
+ #----------------------------------------------------------------------------#
+ # Handle global and static constructurs execution and setup                  #
+ # destructors to be called from exit.                                        #
+	bal	ra,	_init
+	movd	$_fini, r2
+	bal     ra, _atexit 
+
+ #----------------------------------------------------------------------------#
+ # Here you may add initializations that are specific to your                 #
+ # environment. For example:                                                  #
+ # 1. Configure wait states and other BIU parameters in order to get          #
+ #    the best performance out of your target (see the specification          #
+ #    document).                                                              #
+ # 2. Enable maskable interrupts that should be enabled when your             #
+ #    program starts to execute.                                              #
+
+
+ #----------------------------------------------------------------------------#
+ # Jump to the main function in your application.                             #
+
+	bal	ra, _main
+
+ #----------------------------------------------------------------------------#
+ # Upon returning from the main function (if it isn't an infinite loop),      #
+ # jump to the exit function. The exit function is located in the             #
+ # library 'libc.a'.                                                          #
+
+	movd	r0, r2		# _main return value is passed as a
+						# parameter to exit.
+	br	_exit			# returns control to the debugger.
+