/*
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/*
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* crt0.S for the Blackfin processor
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* crt0.S for the Blackfin processor
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*
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*
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* Copyright (C) 2006 Analog Devices, Inc.
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* Copyright (C) 2006 Analog Devices, Inc.
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*
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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* they apply.
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*/
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*/
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.text
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.text
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.align 2
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.align 2
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.global __start
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.global __start
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__start:
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__start:
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/* Start by setting up a stack */
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/* Start by setting up a stack */
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link 0xc;
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link 0xc;
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/* Zero the memory in the .bss section. */
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/* Zero the memory in the .bss section. */
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p0.l = __edata;
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p0.l = __edata;
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p0.h = __edata;
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p0.h = __edata;
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p1.l = __end;
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p1.l = __end;
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p1.h = __end;
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p1.h = __end;
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p1 -= p0;
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p1 -= p0;
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r0 = 0;
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r0 = 0;
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lsetup (L$L$clear_bss, L$L$clear_bss) lc0 = p1;
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lsetup (L$L$clear_bss, L$L$clear_bss) lc0 = p1;
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L$L$clear_bss:
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L$L$clear_bss:
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B [p0++] = r0;
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B [p0++] = r0;
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#ifdef __BFIN_FDPIC__
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#ifdef __BFIN_FDPIC__
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/* Set up GOT pointer. */
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/* Set up GOT pointer. */
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P0.L = __ROFIXUP_END__;
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P0.L = __ROFIXUP_END__;
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P0.H = __ROFIXUP_END__;
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P0.H = __ROFIXUP_END__;
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P4 = [P0 - 4];
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P4 = [P0 - 4];
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#endif
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#endif
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/* Need to set up standard file handles */
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/* Need to set up standard file handles */
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/* Parse string at r1 */
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/* Parse string at r1 */
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p0.l = __init;
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p0.l = __init;
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p0.h = __init;
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p0.h = __init;
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P3 = P4;
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P3 = P4;
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call (p0)
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call (p0)
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p0.l = _atexit;
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p0.l = _atexit;
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p0.h = _atexit;
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p0.h = _atexit;
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#ifdef __BFIN_FDPIC__
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#ifdef __BFIN_FDPIC__
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r0 = [P4 + __fini@FUNCDESC_GOT17M4] ;
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r0 = [P4 + __fini@FUNCDESC_GOT17M4] ;
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P3 = P4;
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P3 = P4;
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#else
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#else
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r0.l = __fini;
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r0.l = __fini;
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r0.h = __fini;
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r0.h = __fini;
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#endif
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#endif
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call (p0)
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call (p0)
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p0.l = ___setup_argv_and_call_main;
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p0.l = ___setup_argv_and_call_main;
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p0.h = ___setup_argv_and_call_main;
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p0.h = ___setup_argv_and_call_main;
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P3 = P4;
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P3 = P4;
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call (p0)
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call (p0)
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p0.l = _exit;
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p0.l = _exit;
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p0.h = _exit;
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p0.h = _exit;
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P3 = P4;
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P3 = P4;
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jump (p0) /* Should not return. */
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jump (p0) /* Should not return. */
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nop;
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nop;
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