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[/] [ion/] [trunk/] [src/] [common/] [libsoc/] [src/] [syscalls.c] - Rev 243
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/* syscalls.c -- Hardware-dependent functions for CodeSourcery libraries. These are just stubs meant to keep the compiler happy. Once I find out how to exclude newlib stuff from the compilation, thses functions will be removed. */ #include <sys/stat.h> int close(int file){ return -1; } int fstat(int file, struct stat *st){ st->st_mode = S_IFCHR; return 0; } int isatty(int file){ return 1; } int lseek(int file, int ptr, int dir){ return 0; } int open(const char *name, int flags, int mode){ return -1; } int read(int file, char *ptr, int len){ /* use gets() to read from console */ return 0; } char *heap_end = 0; /* Stub -- broken -- do not use */ caddr_t sbrk(int incr){ //extern char heap_low; /* Defined by the linker */ //extern char heap_top; /* Defined by the linker */ char *prev_heap_end; if (heap_end == 0){ heap_end = (char *)0x00010000; //&heap_low; } prev_heap_end = heap_end; if ((unsigned)(heap_end + incr) > 0x00020000 /*&heap_top */){ /* Heap and stack collision */ return (caddr_t)0; } heap_end += incr; return (caddr_t) prev_heap_end; } int write(int file, char *ptr, int len){ puts(ptr); }
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