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2001-12-22 Geoffrey Keating <geoffk@redhat.com> Catherine Moore <clm@redhat.com> Richard Henderson <rth@redhat.com> Corinna Vinschen <vinschen@redhat.com> * 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 <geoffk@redhat.com> Mark Salter <msalter@redhat.com> Catherine Moore <clm@redhat.com> Richard Henderson <rth@redhat.com> * 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.
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/* sbrk.c -- allocate memory dynamically.
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*
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* Copyright (c) 1995,1996 Cygnus Support
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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#include <errno.h>
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#include "glue.h"
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/* just in case, most boards have at least some memory */
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#ifndef RAMSIZE
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# define RAMSIZE (caddr_t)0x100000
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#endif
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char *heap_ptr;
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/*
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* sbrk -- changes heap size size. Get nbytes more
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* RAM. We just increment a pointer in what's
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* left of memory on the board.
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*/
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char *
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_sbrk (nbytes)
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int nbytes;
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{
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char *base;
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if (!heap_ptr)
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heap_ptr = (char *)&_end;
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base = heap_ptr;
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heap_ptr += nbytes;
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return base;
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/* FIXME: We really want to make sure we don't run out of RAM, but this
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* isn't very portable.
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*/
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#if 0
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if ((RAMSIZE - heap_ptr - nbytes) >= 0) {
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base = heap_ptr;
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heap_ptr += nbytes;
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return (base);
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} else {
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errno = ENOMEM;
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return ((char *)-1);
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}
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#endif
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}
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