20000317 sourceware import

1 files changed, 58 insertions, 0 deletions

diff --git a/libgloss/mn10200/crt0.S b/libgloss/mn10200/crt0.S
new file mode 100644
index 000000000..d41abfc90
--- /dev/null
+++ b/libgloss/mn10200/crt0.S
@@ -0,0 +1,58 @@
+##==============================================================================
+##
+##	crt0.S
+##
+##	MN10200 startup code
+##
+##==============================================================================
+##
+## Copyright (c) 1995, 1996, 1997, 1998 Cygnus Solutions
+## 
+## 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.
+##
+	
+##------------------------------------------------------------------------------
+	
+	.file	"crt0.S"
+
+##------------------------------------------------------------------------------
+## Startup code
+	.section .text
+	.global	_start
+_start:
+	mov _stack,a3		# Load up the stack pointer and allocate
+				# our current frame.
+
+	mov _edata,a0		# Get the start/end of bss
+	mov _end,a1
+
+	cmp a0,a1		# If no bss, then do nothing
+	beqx .L0
+
+	sub d0,d0		# clear d0
+
+.L1:
+	movb d0,(a0)		# Clear a byte and bump pointer
+	add 1,a0
+	cmp a0,a1
+	bnex .L1
+
+.L0:
+	jsr ___main
+	sub d0,d0
+	mov d0,d1
+	mov d0,(a3)
+	jsr _main		# Call main program
+	jmp _exit		# All done, no need to return or
+				# deallocate our stack.
+
+	.section .stack
+_stack:	.long 	1