2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
319 lines
7.9 KiB
C
319 lines
7.9 KiB
C
/* $NetBSD: xdr_float.c,v 1.35 2009/02/14 06:26:42 lukem 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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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char *sccsid = "@(#)xdr_float.c 1.12 87/08/11 Copyr 1984 Sun Micro";
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static char *sccsid = "@(#)xdr_float.c 2.1 88/07/29 4.0 RPCSRC";
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#else
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__RCSID("$NetBSD: xdr_float.c,v 1.35 2009/02/14 06:26:42 lukem Exp $");
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#endif
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#endif
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/*
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* xdr_float.c, Generic XDR routines implementation.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*
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* These are the "floating point" xdr routines used to (de)serialize
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* most common data items. See xdr.h for more info on the interface to
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* xdr.
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*/
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#include "namespace.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <stdio.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#ifdef __weak_alias
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__weak_alias(xdr_double,_xdr_double)
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__weak_alias(xdr_float,_xdr_float)
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#endif
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/*
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* NB: Not portable.
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* This routine works on machines with IEEE754 FP and Vaxen.
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*/
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#if defined(__m68k__) || defined(__sparc__) || defined(__i386__) || \
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defined(__mips__) || defined(__ns32k__) || defined(__alpha__) || \
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defined(__arm__) || defined(__powerpc__) || defined(__sh__) || \
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defined(__x86_64__) || defined(__hppa__) || defined(__ia64__)
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#include <machine/endian.h>
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#define IEEEFP
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#endif
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#if defined(__vax__)
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/* What IEEE single precision floating point looks like on a Vax */
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struct ieee_single {
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unsigned int mantissa: 23;
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unsigned int exp : 8;
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unsigned int sign : 1;
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};
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/* Vax single precision floating point */
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struct vax_single {
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unsigned int mantissa1 : 7;
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unsigned int exp : 8;
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unsigned int sign : 1;
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unsigned int mantissa2 : 16;
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};
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#define VAX_SNG_BIAS 0x81
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#define IEEE_SNG_BIAS 0x7f
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static struct sgl_limits {
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struct vax_single s;
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struct ieee_single ieee;
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} sgl_limits[2] = {
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{{ 0x7f, 0xff, 0x0, 0xffff }, /* Max Vax */
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{ 0x0, 0xff, 0x0 }}, /* Max IEEE */
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{{ 0x0, 0x0, 0x0, 0x0 }, /* Min Vax */
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{ 0x0, 0x0, 0x0 }} /* Min IEEE */
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};
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#endif /* vax */
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bool_t
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xdr_float(xdrs, fp)
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XDR *xdrs;
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float *fp;
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{
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#ifndef IEEEFP
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struct ieee_single is;
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struct vax_single vs, *vsp;
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struct sgl_limits *lim;
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size_t i;
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#endif
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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#ifdef IEEEFP
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return (XDR_PUTINT32(xdrs, (int32_t *)(void *)fp));
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#else
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vs = *((struct vax_single *)fp);
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for (i = 0, lim = sgl_limits;
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i < sizeof(sgl_limits)/sizeof(struct sgl_limits);
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i++, lim++) {
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if ((vs.mantissa2 == lim->s.mantissa2) &&
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(vs.exp == lim->s.exp) &&
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(vs.mantissa1 == lim->s.mantissa1)) {
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is = lim->ieee;
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goto shipit;
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}
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}
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is.exp = vs.exp - VAX_SNG_BIAS + IEEE_SNG_BIAS;
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is.mantissa = (vs.mantissa1 << 16) | vs.mantissa2;
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shipit:
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is.sign = vs.sign;
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return (XDR_PUTINT32(xdrs, (int32_t *)(void *)&is));
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#endif
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case XDR_DECODE:
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#ifdef IEEEFP
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return (XDR_GETINT32(xdrs, (int32_t *)(void *)fp));
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#else
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vsp = (struct vax_single *)fp;
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if (!XDR_GETINT32(xdrs, (int32_t *)(void *)&is))
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return (FALSE);
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for (i = 0, lim = sgl_limits;
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i < sizeof(sgl_limits)/sizeof(struct sgl_limits);
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i++, lim++) {
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if ((is.exp == lim->ieee.exp) &&
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(is.mantissa == lim->ieee.mantissa)) {
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*vsp = lim->s;
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goto doneit;
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}
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}
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vsp->exp = is.exp - IEEE_SNG_BIAS + VAX_SNG_BIAS;
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vsp->mantissa2 = is.mantissa;
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vsp->mantissa1 = (is.mantissa >> 16);
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doneit:
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vsp->sign = is.sign;
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return (TRUE);
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#endif
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case XDR_FREE:
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return (TRUE);
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}
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/* NOTREACHED */
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return (FALSE);
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}
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#if defined(__vax__)
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/* What IEEE double precision floating point looks like on a Vax */
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struct ieee_double {
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unsigned int mantissa1 : 20;
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unsigned int exp : 11;
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unsigned int sign : 1;
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unsigned int mantissa2 : 32;
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};
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/* Vax double precision floating point */
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struct vax_double {
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unsigned int mantissa1 : 7;
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unsigned int exp : 8;
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unsigned int sign : 1;
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unsigned int mantissa2 : 16;
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unsigned int mantissa3 : 16;
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unsigned int mantissa4 : 16;
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};
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#define VAX_DBL_BIAS 0x81
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#define IEEE_DBL_BIAS 0x3ff
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#define MASK(nbits) ((1 << nbits) - 1)
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static struct dbl_limits {
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struct vax_double d;
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struct ieee_double ieee;
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} dbl_limits[2] = {
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{{ 0x7f, 0xff, 0x0, 0xffff, 0xffff, 0xffff }, /* Max Vax */
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{ 0x0, 0x7ff, 0x0, 0x0 }}, /* Max IEEE */
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{{ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, /* Min Vax */
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{ 0x0, 0x0, 0x0, 0x0 }} /* Min IEEE */
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};
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#endif /* vax */
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bool_t
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xdr_double(xdrs, dp)
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XDR *xdrs;
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double *dp;
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{
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#ifdef IEEEFP
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int32_t *i32p;
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bool_t rv;
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#else
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int32_t *lp;
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struct ieee_double id;
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struct vax_double vd;
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struct dbl_limits *lim;
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size_t i;
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#endif
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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#ifdef IEEEFP
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i32p = (int32_t *)(void *)dp;
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#if (BYTE_ORDER == BIG_ENDIAN) || \
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(defined(__arm__) && !defined(__VFP_FP__))
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rv = XDR_PUTINT32(xdrs, i32p);
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if (!rv)
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return (rv);
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rv = XDR_PUTINT32(xdrs, i32p+1);
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#else
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rv = XDR_PUTINT32(xdrs, i32p+1);
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if (!rv)
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return (rv);
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rv = XDR_PUTINT32(xdrs, i32p);
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#endif
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return (rv);
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#else
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vd = *((struct vax_double *)dp);
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for (i = 0, lim = dbl_limits;
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i < sizeof(dbl_limits)/sizeof(struct dbl_limits);
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i++, lim++) {
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if ((vd.mantissa4 == lim->d.mantissa4) &&
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(vd.mantissa3 == lim->d.mantissa3) &&
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(vd.mantissa2 == lim->d.mantissa2) &&
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(vd.mantissa1 == lim->d.mantissa1) &&
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(vd.exp == lim->d.exp)) {
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id = lim->ieee;
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goto shipit;
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}
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}
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id.exp = vd.exp - VAX_DBL_BIAS + IEEE_DBL_BIAS;
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id.mantissa1 = (vd.mantissa1 << 13) | (vd.mantissa2 >> 3);
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id.mantissa2 = ((vd.mantissa2 & MASK(3)) << 29) |
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(vd.mantissa3 << 13) |
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((vd.mantissa4 >> 3) & MASK(13));
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shipit:
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id.sign = vd.sign;
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lp = (int32_t *)(void *)&id;
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return (XDR_PUTINT32(xdrs, lp++) && XDR_PUTINT32(xdrs, lp));
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#endif
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case XDR_DECODE:
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#ifdef IEEEFP
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i32p = (int32_t *)(void *)dp;
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#if BYTE_ORDER == BIG_ENDIAN || \
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(defined(__arm__) && !defined(__VFP_FP__))
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rv = XDR_GETINT32(xdrs, i32p);
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if (!rv)
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return (rv);
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rv = XDR_GETINT32(xdrs, i32p+1);
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#else
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rv = XDR_GETINT32(xdrs, i32p+1);
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if (!rv)
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return (rv);
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rv = XDR_GETINT32(xdrs, i32p);
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#endif
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return (rv);
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#else
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lp = (int32_t *)(void *)&id;
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if (!XDR_GETINT32(xdrs, lp++) || !XDR_GETINT32(xdrs, lp))
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return (FALSE);
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for (i = 0, lim = dbl_limits;
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i < sizeof(dbl_limits)/sizeof(struct dbl_limits);
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i++, lim++) {
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if ((id.mantissa2 == lim->ieee.mantissa2) &&
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(id.mantissa1 == lim->ieee.mantissa1) &&
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(id.exp == lim->ieee.exp)) {
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vd = lim->d;
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goto doneit;
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}
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}
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vd.exp = id.exp - IEEE_DBL_BIAS + VAX_DBL_BIAS;
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vd.mantissa1 = (id.mantissa1 >> 13);
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vd.mantissa2 = ((id.mantissa1 & MASK(13)) << 3) |
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(id.mantissa2 >> 29);
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vd.mantissa3 = (id.mantissa2 >> 13);
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vd.mantissa4 = (id.mantissa2 << 3);
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doneit:
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vd.sign = id.sign;
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*dp = *((double *)(void *)&vd);
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return (TRUE);
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#endif
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case XDR_FREE:
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return (TRUE);
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}
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/* NOTREACHED */
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return (FALSE);
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}
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