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/*
* crt0.S for the Blackfin processor
*
* Copyright (C) 2006 Analog Devices, Inc.
*
* 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.
*/
.text
.align 2
.global __start
__start:
/* Start by setting up a stack */
link 0xc;
/* Zero the memory in the .bss section. */
p0.l = __edata;
p0.h = __edata;
p1.l = __end;
p1.h = __end;
p1 -= p0;
r0 = 0;
lsetup (L$L$clear_bss, L$L$clear_bss) lc0 = p1;
L$L$clear_bss:
B [p0++] = r0;
#ifdef __BFIN_FDPIC__
/* Set up GOT pointer. */
P0.L = __ROFIXUP_END__;
P0.H = __ROFIXUP_END__;
P4 = [P0 - 4];
#endif
/* Need to set up standard file handles */
/* Parse string at r1 */
p0.l = __init;
p0.h = __init;
P3 = P4;
call (p0)
p0.l = _atexit;
p0.h = _atexit;
#ifdef __BFIN_FDPIC__
r0 = [P4 + __fini@FUNCDESC_GOT17M4] ;
P3 = P4;
#else
r0.l = __fini;
r0.h = __fini;
#endif
call (p0)
p0.l = ___setup_argv_and_call_main;
p0.h = ___setup_argv_and_call_main;
P3 = P4;
call (p0)
p0.l = _exit;
p0.h = _exit;
P3 = P4;
jump (p0) /* Should not return. */
nop;
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