44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
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* basflash_start.c
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*
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*
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* This file is part of BaS_gcc.
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*
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* BaS_gcc is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* BaS_gcc is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with BaS_gcc. If not, see <http://www.gnu.org/licenses/>.
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*
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* Created on: 26.02.2013
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* Author: Markus Fröschle
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*/
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#include <bas_types.h>
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#define STACKSIZE 16384
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static uint32_t ownstack[STACKSIZE];
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static uint32_t *stackptr = &ownstack[STACKSIZE - 1];
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/*
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* setup our own stack in SDRAM to prevent clashing BaS's in SRAM (size limited).
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*/
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void startup(void)
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{
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static uint32_t oldstack;
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void basflash(void);
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__asm__ __volatile__("move.l sp,%0\n\t" : "=g"(oldstack) : :);
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__asm__ __volatile__("move.l %0,sp\n\t" : : "g"(stackptr) : );
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basflash();
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__asm__ __volatile__("move.l %0,sp\n\t" : : "g"(oldstack) : "sp");
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(void) stackptr; /* make compiler happy about unused variables */
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}
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