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