From f6eff1c04649af4f2a18c434d9be2870c24cc668 Mon Sep 17 00:00:00 2001 From: Geoffrey Keating Date: Sat, 22 Dec 2001 22:47:58 +0000 Subject: In newlib/: 2001-12-22 Geoffrey Keating Catherine Moore Richard Henderson Corinna Vinschen * configure.host: Add support for xstormy16. * libc/include/machine/ieeefp.h: Add support for xstormy16. * libc/include/machine/setjmp.h: Add support for xstormy16. * libc/include/sys/config.h: Add support for xstormy16. * libc/machine/xstormy16/Makefile.am: New file. * libc/machine/xstormy16/Makefile.in: New file. * libc/machine/xstormy16/aclocal.m4: New file. * libc/machine/xstormy16/configure: New file. * libc/machine/xstormy16/configure.in: New file. * libc/machine/xstormy16/setjmp.S: New file. In libgloss/: 2001-12-22 Geoffrey Keating Mark Salter Catherine Moore Richard Henderson * configure.in: Add xstormy16. * libnosys/configure.in: Add xstormy16. * configure: Regenerated. * libnosys/configure: Regenerated. * xstormy16/Makefile.in: New file. * xstormy16/close.c: New file. * xstormy16/configure: New file. * xstormy16/configure.in: New file. * xstormy16/crt0.s: New file. * xstormy16/crt0_stub.s: New file. * xstormy16/crti.s: New file. * xstormy16/crtn.s: New file. * xstormy16/eva_app.c: New file. * xstormy16/eva_app.ld: New file. * xstormy16/eva_stub.ld: New file. * xstormy16/fstat.c: New file. * xstormy16/getpid.c: New file. * xstormy16/kill.c: New file. * xstormy16/lseek.c: New file. * xstormy16/open.c: New file. * xstormy16/sbrk.c: New file. * xstormy16/sim_high.ld: New file. * xstormy16/stat.c: New file. * xstormy16/syscalls.S: New file. * xstormy16/syscalls.m4: New file. * xstormy16/unlink.c: New file. * xstormy16/xstormy16_stub.c: New file. --- libgloss/xstormy16/sbrk.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 libgloss/xstormy16/sbrk.c (limited to 'libgloss/xstormy16/sbrk.c') diff --git a/libgloss/xstormy16/sbrk.c b/libgloss/xstormy16/sbrk.c new file mode 100644 index 000000000..cb18d68bf --- /dev/null +++ b/libgloss/xstormy16/sbrk.c @@ -0,0 +1,55 @@ +/* sbrk.c -- allocate memory dynamically. + * + * Copyright (c) 1995,1996 Cygnus Support + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. + */ +#include +#include "glue.h" + +/* just in case, most boards have at least some memory */ +#ifndef RAMSIZE +# define RAMSIZE (caddr_t)0x100000 +#endif + +char *heap_ptr; + +/* + * sbrk -- changes heap size size. Get nbytes more + * RAM. We just increment a pointer in what's + * left of memory on the board. + */ +char * +_sbrk (nbytes) + int nbytes; +{ + char *base; + + if (!heap_ptr) + heap_ptr = (char *)&_end; + base = heap_ptr; + heap_ptr += nbytes; + + return base; +/* FIXME: We really want to make sure we don't run out of RAM, but this + * isn't very portable. + */ +#if 0 + if ((RAMSIZE - heap_ptr - nbytes) >= 0) { + base = heap_ptr; + heap_ptr += nbytes; + return (base); + } else { + errno = ENOMEM; + return ((char *)-1); + } +#endif +} -- cgit v1.2.3