802cb57e34
When copying big structures, LLVM generates calls to memmove(), because it may not be able to figure out whether structures overlap. This caused linker errors to occur. memmove() is now implemented using bcopy(). Ideally it would be the other way around, but that can be solved in the future. On ARM we don't do add anything, because it already has memmove(). Discussed on: arch@ Reviewed by: rdivacky
231 lines
5.8 KiB
C
231 lines
5.8 KiB
C
/* $NetBSD: xdr_mem.c,v 1.15 2000/01/22 22:19:18 mycroft Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *sccsid2 = "@(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";
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static char *sccsid = "@(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* xdr_mem.h, XDR implementation using memory buffers.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*
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* If you have some data to be interpreted as external data representation
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* or to be converted to external data representation in a memory buffer,
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* then this is the package for you.
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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static void xdrmem_destroy(XDR *);
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static bool_t xdrmem_getlong_aligned(XDR *, long *);
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static bool_t xdrmem_putlong_aligned(XDR *, const long *);
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static bool_t xdrmem_getlong_unaligned(XDR *, long *);
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static bool_t xdrmem_putlong_unaligned(XDR *, const long *);
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static bool_t xdrmem_getbytes(XDR *, char *, u_int);
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static bool_t xdrmem_putbytes(XDR *, const char *, u_int);
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/* XXX: w/64-bit pointers, u_int not enough! */
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static u_int xdrmem_getpos(XDR *);
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static bool_t xdrmem_setpos(XDR *, u_int);
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static int32_t *xdrmem_inline_aligned(XDR *, u_int);
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static int32_t *xdrmem_inline_unaligned(XDR *, u_int);
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static const struct xdr_ops xdrmem_ops_aligned = {
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xdrmem_getlong_aligned,
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xdrmem_putlong_aligned,
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xdrmem_getbytes,
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xdrmem_putbytes,
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xdrmem_getpos,
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xdrmem_setpos,
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xdrmem_inline_aligned,
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xdrmem_destroy
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};
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static const struct xdr_ops xdrmem_ops_unaligned = {
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xdrmem_getlong_unaligned,
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xdrmem_putlong_unaligned,
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xdrmem_getbytes,
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xdrmem_putbytes,
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xdrmem_getpos,
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xdrmem_setpos,
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xdrmem_inline_unaligned,
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xdrmem_destroy
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};
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/*
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* The procedure xdrmem_create initializes a stream descriptor for a
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* memory buffer.
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*/
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void
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xdrmem_create(XDR *xdrs, char *addr, u_int size, enum xdr_op op)
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{
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xdrs->x_op = op;
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xdrs->x_ops = ((unsigned long)addr & (sizeof(int32_t) - 1))
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? &xdrmem_ops_unaligned : &xdrmem_ops_aligned;
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xdrs->x_private = xdrs->x_base = addr;
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xdrs->x_handy = size;
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}
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/*ARGSUSED*/
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static void
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xdrmem_destroy(XDR *xdrs)
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{
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}
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static bool_t
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xdrmem_getlong_aligned(XDR *xdrs, long *lp)
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{
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if (xdrs->x_handy < sizeof(int32_t))
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return (FALSE);
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xdrs->x_handy -= sizeof(int32_t);
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*lp = ntohl(*(u_int32_t *)xdrs->x_private);
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xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
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return (TRUE);
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}
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static bool_t
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xdrmem_putlong_aligned(XDR *xdrs, const long *lp)
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{
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if (xdrs->x_handy < sizeof(int32_t))
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return (FALSE);
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xdrs->x_handy -= sizeof(int32_t);
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*(u_int32_t *)xdrs->x_private = htonl((u_int32_t)*lp);
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xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
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return (TRUE);
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}
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static bool_t
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xdrmem_getlong_unaligned(XDR *xdrs, long *lp)
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{
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u_int32_t l;
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if (xdrs->x_handy < sizeof(int32_t))
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return (FALSE);
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xdrs->x_handy -= sizeof(int32_t);
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memmove(&l, xdrs->x_private, sizeof(int32_t));
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*lp = ntohl(l);
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xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
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return (TRUE);
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}
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static bool_t
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xdrmem_putlong_unaligned(XDR *xdrs, const long *lp)
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{
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u_int32_t l;
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if (xdrs->x_handy < sizeof(int32_t))
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return (FALSE);
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xdrs->x_handy -= sizeof(int32_t);
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l = htonl((u_int32_t)*lp);
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memmove(xdrs->x_private, &l, sizeof(int32_t));
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xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
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return (TRUE);
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}
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static bool_t
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xdrmem_getbytes(XDR *xdrs, char *addr, u_int len)
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{
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if (xdrs->x_handy < len)
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return (FALSE);
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xdrs->x_handy -= len;
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memmove(addr, xdrs->x_private, len);
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xdrs->x_private = (char *)xdrs->x_private + len;
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return (TRUE);
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}
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static bool_t
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xdrmem_putbytes(XDR *xdrs, const char *addr, u_int len)
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{
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if (xdrs->x_handy < len)
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return (FALSE);
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xdrs->x_handy -= len;
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memmove(xdrs->x_private, addr, len);
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xdrs->x_private = (char *)xdrs->x_private + len;
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return (TRUE);
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}
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static u_int
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xdrmem_getpos(XDR *xdrs)
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{
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/* XXX w/64-bit pointers, u_int not enough! */
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return (u_int)((u_long)xdrs->x_private - (u_long)xdrs->x_base);
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}
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static bool_t
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xdrmem_setpos(XDR *xdrs, u_int pos)
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{
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char *newaddr = xdrs->x_base + pos;
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char *lastaddr = (char *)xdrs->x_private + xdrs->x_handy;
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if (newaddr > lastaddr)
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return (FALSE);
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xdrs->x_private = newaddr;
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xdrs->x_handy = (u_int)(lastaddr - newaddr); /* XXX sizeof(u_int) <? sizeof(ptrdiff_t) */
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return (TRUE);
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}
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static int32_t *
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xdrmem_inline_aligned(XDR *xdrs, u_int len)
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{
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int32_t *buf = 0;
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if (xdrs->x_handy >= len) {
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xdrs->x_handy -= len;
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buf = (int32_t *)xdrs->x_private;
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xdrs->x_private = (char *)xdrs->x_private + len;
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}
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return (buf);
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}
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/* ARGSUSED */
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static int32_t *
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xdrmem_inline_unaligned(XDR *xdrs, u_int len)
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{
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return (0);
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}
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