Update to use the latest Yagarto and change the C handler part of the interrupt routines to use the noinline attribute.
Richard Barry
16 years ago
parent
9a76bc39cb
commit
6bdf14c33f
@ -0,0 +1,162 @@
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/****************************************************************************
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* Copyright (c) 2009 by Michael Fischer. All rights reserved.
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*
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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
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, 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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* 3. Neither the name of the author nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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****************************************************************************
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* History:
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*
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* 28.03.09 mifi First Version, based on the original syscall.c from
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* newlib version 1.17.0
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****************************************************************************/
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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/***************************************************************************/
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int _read_r (struct _reent *r, int file, char * ptr, int len)
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{
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r = r;
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file = file;
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ptr = ptr;
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len = len;
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errno = EINVAL;
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return -1;
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}
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/***************************************************************************/
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int _lseek_r (struct _reent *r, int file, int ptr, int dir)
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{
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r = r;
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file = file;
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ptr = ptr;
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dir = dir;
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return 0;
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}
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/***************************************************************************/
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int _write_r (struct _reent *r, int file, char * ptr, int len)
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{
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r = r;
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file = file;
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ptr = ptr;
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#if 0
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int index;
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/* For example, output string by UART */
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for(index=0; index<len; index++)
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{
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if (ptr[index] == '\n')
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{
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uart_putc('\r');
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}
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uart_putc(ptr[index]);
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}
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#endif
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return len;
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}
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/***************************************************************************/
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int _close_r (struct _reent *r, int file)
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{
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return 0;
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}
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/***************************************************************************/
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/* Register name faking - works in collusion with the linker. */
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register char * stack_ptr asm ("sp");
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caddr_t _sbrk_r (struct _reent *r, int incr)
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{
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extern char end asm ("end"); /* Defined by the linker. */
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static char * heap_end;
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char * prev_heap_end;
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if (heap_end == NULL)
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heap_end = & end;
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prev_heap_end = heap_end;
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if (heap_end + incr > stack_ptr)
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{
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/* Some of the libstdc++-v3 tests rely upon detecting
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out of memory errors, so do not abort here. */
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#if 0
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extern void abort (void);
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_write (1, "_sbrk: Heap and stack collision\n", 32);
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abort ();
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#else
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errno = ENOMEM;
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return (caddr_t) -1;
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#endif
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}
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heap_end += incr;
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return (caddr_t) prev_heap_end;
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}
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/***************************************************************************/
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int _fstat_r (struct _reent *r, int file, struct stat * st)
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{
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r = r;
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file = file;
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memset (st, 0, sizeof (* st));
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st->st_mode = S_IFCHR;
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return 0;
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}
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/***************************************************************************/
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int _isatty_r(struct _reent *r, int fd)
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{
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r = r;
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fd = fd;
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return 1;
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}
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/*** EOF ***/
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