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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 /*
     30  * Adr memory based encoding
     31  */
     32 
     33 #include <sys/feature_tests.h>
     34 
     35 #pragma weak adr_ushort = adr_short
     36 #pragma weak adr_uint32 = adr_int32
     37 #pragma weak adr_uint64 = adr_int64
     38 #pragma weak adr_getushort = adr_getshort
     39 #pragma weak adr_getuint32 = adr_getint32
     40 #pragma weak adr_getuint64 = adr_getint64
     41 
     42 #include <sys/types.h>
     43 #include <sys/t_lock.h>
     44 #include <sys/systm.h>
     45 #include <sys/mutex.h>
     46 #include <sys/thread.h>
     47 #include <c2/audit.h>
     48 #include <c2/audit_kernel.h>
     49 #include <c2/audit_record.h>
     50 
     51 void
     52 adr_start(adr_t *adr, char *p)
     53 {
     54 	adr->adr_stream = p;
     55 	adr->adr_now = p;
     56 }
     57 
     58 int
     59 adr_count(adr_t *adr)
     60 {
     61 	return ((int)((uintptr_t)adr->adr_now - (uintptr_t)adr->adr_stream));
     62 }
     63 
     64 
     65 /*
     66  * adr_char - pull out characters
     67  */
     68 void
     69 adr_char(adr_t *adr, char *cp, int count)
     70 {
     71 	while (count-- > 0)
     72 		*adr->adr_now++ = *cp++;
     73 }
     74 
     75 /*
     76  * adr_short - pull out shorts
     77  */
     78 void
     79 adr_short(adr_t *adr, short *sp, int count)
     80 {
     81 
     82 	for (; count-- > 0; sp++) {
     83 		*adr->adr_now++ = (char)((*sp >> (int)8) & 0x00ff);
     84 		*adr->adr_now++ = (char)(*sp & 0x00ff);
     85 	}
     86 }
     87 
     88 /*
     89  * adr_int32 - pull out int32
     90  */
     91 void
     92 adr_int32(adr_t *adr, int32_t *lp, int count)
     93 {
     94 	int i;		/* index for counting */
     95 	int32_t l;		/* value for shifting */
     96 
     97 	for (; count-- > 0; lp++) {
     98 		for (i = 0, l = *lp; i < 4; i++) {
     99 			*adr->adr_now++ = (char)((l & (int32_t)0xff000000) >>
    100 				(int)24);
    101 			l <<= (int)8;
    102 		}
    103 	}
    104 }
    105 
    106 /*
    107  * adr_int64 - pull out int64
    108  */
    109 void
    110 adr_int64(adr_t *adr, int64_t *lp, int count)
    111 {
    112 	int i;		/* index for counting */
    113 	int64_t l;	/* value for shifting */
    114 
    115 	for (; count-- > 0; lp++) {
    116 		for (i = 0, l = *lp; i < 8; i++) {
    117 		    *adr->adr_now++ =
    118 			(char)((l & (int64_t)0xff00000000000000) >> (int)56);
    119 			l <<= (int)8;
    120 		}
    121 	}
    122 }
    123 
    124 
    125 char *
    126 adr_getchar(adr_t *adr, char *cp)
    127 {
    128 	char	*old;
    129 
    130 	old = adr->adr_now;
    131 	*cp = *adr->adr_now++;
    132 	return (old);
    133 }
    134 
    135 char *
    136 adr_getshort(adr_t *adr, short	*sp)
    137 {
    138 	char	*old;
    139 
    140 	old = adr->adr_now;
    141 	*sp = *adr->adr_now++;
    142 	*sp >>= (int)8;
    143 	*sp = *adr->adr_now++;
    144 	*sp >>= (int)8;
    145 	return (old);
    146 }
    147 
    148 char *
    149 adr_getint32(adr_t *adr, int32_t *lp)
    150 {
    151 	char	*old;
    152 	int	i;
    153 
    154 	old = adr->adr_now;
    155 	for (i = 0; i < 4; i++) {
    156 		*lp <<= 8;
    157 		*lp += ((int32_t)*adr->adr_now++) & 0x000000ff;
    158 
    159 	}
    160 	return (old);
    161 }
    162 
    163 char *
    164 adr_getint64(adr_t *adr, int64_t *lp)
    165 {
    166 	char	*old;
    167 	int	i;
    168 
    169 	old = adr->adr_now;
    170 	for (i = 0; i < 8; i++) {
    171 		*lp <<= 8;
    172 		*lp += ((int64_t)*adr->adr_now++) & 0x00000000000000ff;
    173 	}
    174 	return (old);
    175 }
    176