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##==============================================================================
##
## crt0.S
##
## MN10300 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-8,a0 # Load up the stack pointer
mov a0,sp
mov _edata,a0 # Get the start/end of bss
mov _end,a1
cmp a0,a1 # If no bss, then do nothing
beq .L0
clr d0 # clear d0
.L1:
movbu d0,(a0) # Clear a byte and bump pointer
inc a0
cmp a0,a1
bne .L1
.L0:
call ___main,[],0 # Call __main to run ctors/dtors
clr d0
clr d1
mov d0,(4,sp)
call _main,[],0 # Call main program
call _exit,[],0 # All done, no need to return or
# deallocate our stack.
.section .stack
_stack: .long 1
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