kopia lustrzana https://github.com/hoglet67/RGBtoHDMI
62 wiersze
2.1 KiB
C
62 wiersze
2.1 KiB
C
/*
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Part of the Raspberry-Pi Bare Metal Tutorials
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Copyright (c) 2013, Brian Sidebotham
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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extern int __bss_start__;
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extern int __bss_end__;
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extern void kernel_main( unsigned int r0, unsigned int r1, unsigned int atags );
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void _cstartup( unsigned int r0, unsigned int r1, unsigned int r2 )
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{
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int* bss = &__bss_start__;
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int* bss_end = &__bss_end__;
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/*
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Clear the BSS section
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See http://en.wikipedia.org/wiki/.bss for further information on the
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BSS section
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See https://sourceware.org/newlib/libc.html#Stubs for further
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information on the c-library stubs
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*/
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while( bss < bss_end )
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*bss++ = 0;
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/* We should never return from main ... */
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kernel_main( r0, r1, r2 );
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/* ... but if we do, safely trap here */
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while(1)
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{
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/* EMPTY! */
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}
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}
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