1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5185029Spjd * Common Development and Distribution License (the "License"). 6185029Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 22168404Spjd/* All Rights Reserved */ 23168404Spjd 24168404Spjd 25168404Spjd/* 26185029Spjd * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 27168404Spjd * Use is subject to license terms. 28168404Spjd */ 29168404Spjd 30168404Spjd#ifndef _SYS_SYSMACROS_H 31168404Spjd#define _SYS_SYSMACROS_H 32168404Spjd 33168404Spjd#include <sys/param.h> 34219089Spjd#include <sys/isa_defs.h> 35168404Spjd 36168404Spjd#ifdef __cplusplus 37168404Spjdextern "C" { 38168404Spjd#endif 39168404Spjd 40168404Spjd/* 41168404Spjd * Some macros for units conversion 42168404Spjd */ 43168404Spjd/* 44168404Spjd * Disk blocks (sectors) and bytes. 45168404Spjd */ 46168404Spjd#define dtob(DD) ((DD) << DEV_BSHIFT) 47168404Spjd#define btod(BB) (((BB) + DEV_BSIZE - 1) >> DEV_BSHIFT) 48168404Spjd#define btodt(BB) ((BB) >> DEV_BSHIFT) 49168404Spjd#define lbtod(BB) (((offset_t)(BB) + DEV_BSIZE - 1) >> DEV_BSHIFT) 50168404Spjd 51168404Spjd/* common macros */ 52168404Spjd#ifndef MIN 53168404Spjd#define MIN(a, b) ((a) < (b) ? (a) : (b)) 54168404Spjd#endif 55168404Spjd#ifndef MAX 56168404Spjd#define MAX(a, b) ((a) < (b) ? (b) : (a)) 57168404Spjd#endif 58168404Spjd#ifndef ABS 59168404Spjd#define ABS(a) ((a) < 0 ? -(a) : (a)) 60168404Spjd#endif 61219089Spjd#ifndef SIGNOF 62219089Spjd#define SIGNOF(a) ((a) < 0 ? -1 : (a) > 0) 63219089Spjd#endif 64168404Spjd 65168404Spjd#ifdef _KERNEL 66168404Spjd 67168404Spjd/* 68168404Spjd * Convert a single byte to/from binary-coded decimal (BCD). 69168404Spjd */ 70168404Spjdextern unsigned char byte_to_bcd[256]; 71168404Spjdextern unsigned char bcd_to_byte[256]; 72168404Spjd 73168404Spjd#define BYTE_TO_BCD(x) byte_to_bcd[(x) & 0xff] 74168404Spjd#define BCD_TO_BYTE(x) bcd_to_byte[(x) & 0xff] 75168404Spjd 76168404Spjd#endif /* _KERNEL */ 77168404Spjd 78168404Spjd/* 79168404Spjd * WARNING: The device number macros defined here should not be used by device 80168404Spjd * drivers or user software. Device drivers should use the device functions 81168404Spjd * defined in the DDI/DKI interface (see also ddi.h). Application software 82168404Spjd * should make use of the library routines available in makedev(3). A set of 83168404Spjd * new device macros are provided to operate on the expanded device number 84168404Spjd * format supported in SVR4. Macro versions of the DDI device functions are 85168404Spjd * provided for use by kernel proper routines only. Macro routines bmajor(), 86168404Spjd * major(), minor(), emajor(), eminor(), and makedev() will be removed or 87168404Spjd * their definitions changed at the next major release following SVR4. 88168404Spjd */ 89168404Spjd 90168404Spjd#define O_BITSMAJOR 7 /* # of SVR3 major device bits */ 91168404Spjd#define O_BITSMINOR 8 /* # of SVR3 minor device bits */ 92168404Spjd#define O_MAXMAJ 0x7f /* SVR3 max major value */ 93168404Spjd#define O_MAXMIN 0xff /* SVR3 max minor value */ 94168404Spjd 95168404Spjd 96168404Spjd#define L_BITSMAJOR32 14 /* # of SVR4 major device bits */ 97168404Spjd#define L_BITSMINOR32 18 /* # of SVR4 minor device bits */ 98168404Spjd#define L_MAXMAJ32 0x3fff /* SVR4 max major value */ 99168404Spjd#define L_MAXMIN32 0x3ffff /* MAX minor for 3b2 software drivers. */ 100168404Spjd /* For 3b2 hardware devices the minor is */ 101168404Spjd /* restricted to 256 (0-255) */ 102168404Spjd 103168404Spjd#ifdef _LP64 104168404Spjd#define L_BITSMAJOR 32 /* # of major device bits in 64-bit Solaris */ 105168404Spjd#define L_BITSMINOR 32 /* # of minor device bits in 64-bit Solaris */ 106168404Spjd#define L_MAXMAJ 0xfffffffful /* max major value */ 107168404Spjd#define L_MAXMIN 0xfffffffful /* max minor value */ 108168404Spjd#else 109168404Spjd#define L_BITSMAJOR L_BITSMAJOR32 110168404Spjd#define L_BITSMINOR L_BITSMINOR32 111168404Spjd#define L_MAXMAJ L_MAXMAJ32 112168404Spjd#define L_MAXMIN L_MAXMIN32 113168404Spjd#endif 114168404Spjd 115219089Spjd#ifdef sun 116168404Spjd#ifdef _KERNEL 117168404Spjd 118168404Spjd/* major part of a device internal to the kernel */ 119168404Spjd 120168404Spjd#define major(x) (major_t)((((unsigned)(x)) >> O_BITSMINOR) & O_MAXMAJ) 121168404Spjd#define bmajor(x) (major_t)((((unsigned)(x)) >> O_BITSMINOR) & O_MAXMAJ) 122168404Spjd 123168404Spjd/* get internal major part of expanded device number */ 124168404Spjd 125168404Spjd#define getmajor(x) (major_t)((((dev_t)(x)) >> L_BITSMINOR) & L_MAXMAJ) 126168404Spjd 127168404Spjd/* minor part of a device internal to the kernel */ 128168404Spjd 129168404Spjd#define minor(x) (minor_t)((x) & O_MAXMIN) 130168404Spjd 131168404Spjd/* get internal minor part of expanded device number */ 132168404Spjd 133168404Spjd#define getminor(x) (minor_t)((x) & L_MAXMIN) 134168404Spjd 135168404Spjd#else 136168404Spjd 137168404Spjd/* major part of a device external from the kernel (same as emajor below) */ 138168404Spjd 139168404Spjd#define major(x) (major_t)((((unsigned)(x)) >> O_BITSMINOR) & O_MAXMAJ) 140168404Spjd 141168404Spjd/* minor part of a device external from the kernel (same as eminor below) */ 142168404Spjd 143168404Spjd#define minor(x) (minor_t)((x) & O_MAXMIN) 144168404Spjd 145168404Spjd#endif /* _KERNEL */ 146168404Spjd 147168404Spjd/* create old device number */ 148168404Spjd 149168404Spjd#define makedev(x, y) (unsigned short)(((x) << O_BITSMINOR) | ((y) & O_MAXMIN)) 150168404Spjd 151168404Spjd/* make an new device number */ 152168404Spjd 153168404Spjd#define makedevice(x, y) (dev_t)(((dev_t)(x) << L_BITSMINOR) | ((y) & L_MAXMIN)) 154168404Spjd 155168404Spjd 156168404Spjd/* 157168404Spjd * emajor() allows kernel/driver code to print external major numbers 158168404Spjd * eminor() allows kernel/driver code to print external minor numbers 159168404Spjd */ 160168404Spjd 161168404Spjd#define emajor(x) \ 162168404Spjd (major_t)(((unsigned int)(x) >> O_BITSMINOR) > O_MAXMAJ) ? \ 163168404Spjd NODEV : (((unsigned int)(x) >> O_BITSMINOR) & O_MAXMAJ) 164168404Spjd 165168404Spjd#define eminor(x) \ 166168404Spjd (minor_t)((x) & O_MAXMIN) 167168404Spjd 168168404Spjd/* 169168404Spjd * get external major and minor device 170168404Spjd * components from expanded device number 171168404Spjd */ 172168404Spjd#define getemajor(x) (major_t)((((dev_t)(x) >> L_BITSMINOR) > L_MAXMAJ) ? \ 173168404Spjd NODEV : (((dev_t)(x) >> L_BITSMINOR) & L_MAXMAJ)) 174168404Spjd#define geteminor(x) (minor_t)((x) & L_MAXMIN) 175174049Sjb#endif /* sun */ 176174049Sjb 177168404Spjd/* 178168404Spjd * These are versions of the kernel routines for compressing and 179168404Spjd * expanding long device numbers that don't return errors. 180168404Spjd */ 181168404Spjd#if (L_BITSMAJOR32 == L_BITSMAJOR) && (L_BITSMINOR32 == L_BITSMINOR) 182168404Spjd 183168404Spjd#define DEVCMPL(x) (x) 184168404Spjd#define DEVEXPL(x) (x) 185168404Spjd 186168404Spjd#else 187168404Spjd 188168404Spjd#define DEVCMPL(x) \ 189168404Spjd (dev32_t)((((x) >> L_BITSMINOR) > L_MAXMAJ32 || \ 190168404Spjd ((x) & L_MAXMIN) > L_MAXMIN32) ? NODEV32 : \ 191168404Spjd ((((x) >> L_BITSMINOR) << L_BITSMINOR32) | ((x) & L_MAXMIN32))) 192168404Spjd 193168404Spjd#define DEVEXPL(x) \ 194168404Spjd (((x) == NODEV32) ? NODEV : \ 195168404Spjd makedevice(((x) >> L_BITSMINOR32) & L_MAXMAJ32, (x) & L_MAXMIN32)) 196168404Spjd 197168404Spjd#endif /* L_BITSMAJOR32 ... */ 198168404Spjd 199168404Spjd/* convert to old (SVR3.2) dev format */ 200168404Spjd 201168404Spjd#define cmpdev(x) \ 202168404Spjd (o_dev_t)((((x) >> L_BITSMINOR) > O_MAXMAJ || \ 203168404Spjd ((x) & L_MAXMIN) > O_MAXMIN) ? NODEV : \ 204168404Spjd ((((x) >> L_BITSMINOR) << O_BITSMINOR) | ((x) & O_MAXMIN))) 205168404Spjd 206168404Spjd/* convert to new (SVR4) dev format */ 207168404Spjd 208168404Spjd#define expdev(x) \ 209168404Spjd (dev_t)(((dev_t)(((x) >> O_BITSMINOR) & O_MAXMAJ) << L_BITSMINOR) | \ 210168404Spjd ((x) & O_MAXMIN)) 211168404Spjd 212168404Spjd/* 213168404Spjd * Macro for checking power of 2 address alignment. 214168404Spjd */ 215168404Spjd#define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0) 216168404Spjd 217168404Spjd/* 218168404Spjd * Macros for counting and rounding. 219168404Spjd */ 220168404Spjd#define howmany(x, y) (((x)+((y)-1))/(y)) 221168404Spjd#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) 222168404Spjd 223168404Spjd/* 224168404Spjd * Macro to determine if value is a power of 2 225168404Spjd */ 226168404Spjd#define ISP2(x) (((x) & ((x) - 1)) == 0) 227168404Spjd 228168404Spjd/* 229185029Spjd * Macros for various sorts of alignment and rounding. The "align" must 230185029Spjd * be a power of 2. Often times it is a block, sector, or page. 231168404Spjd */ 232185029Spjd 233185029Spjd/* 234185029Spjd * return x rounded down to an align boundary 235185029Spjd * eg, P2ALIGN(1200, 1024) == 1024 (1*align) 236185029Spjd * eg, P2ALIGN(1024, 1024) == 1024 (1*align) 237185029Spjd * eg, P2ALIGN(0x1234, 0x100) == 0x1200 (0x12*align) 238185029Spjd * eg, P2ALIGN(0x5600, 0x100) == 0x5600 (0x56*align) 239185029Spjd */ 240168404Spjd#define P2ALIGN(x, align) ((x) & -(align)) 241185029Spjd 242185029Spjd/* 243185029Spjd * return x % (mod) align 244185029Spjd * eg, P2PHASE(0x1234, 0x100) == 0x34 (x-0x12*align) 245185029Spjd * eg, P2PHASE(0x5600, 0x100) == 0x00 (x-0x56*align) 246185029Spjd */ 247168404Spjd#define P2PHASE(x, align) ((x) & ((align) - 1)) 248185029Spjd 249185029Spjd/* 250185029Spjd * return how much space is left in this block (but if it's perfectly 251185029Spjd * aligned, return 0). 252185029Spjd * eg, P2NPHASE(0x1234, 0x100) == 0xcc (0x13*align-x) 253185029Spjd * eg, P2NPHASE(0x5600, 0x100) == 0x00 (0x56*align-x) 254185029Spjd */ 255168404Spjd#define P2NPHASE(x, align) (-(x) & ((align) - 1)) 256185029Spjd 257185029Spjd/* 258185029Spjd * return x rounded up to an align boundary 259185029Spjd * eg, P2ROUNDUP(0x1234, 0x100) == 0x1300 (0x13*align) 260185029Spjd * eg, P2ROUNDUP(0x5600, 0x100) == 0x5600 (0x56*align) 261185029Spjd */ 262168404Spjd#define P2ROUNDUP(x, align) (-(-(x) & -(align))) 263185029Spjd 264185029Spjd/* 265185029Spjd * return the ending address of the block that x is in 266185029Spjd * eg, P2END(0x1234, 0x100) == 0x12ff (0x13*align - 1) 267185029Spjd * eg, P2END(0x5600, 0x100) == 0x56ff (0x57*align - 1) 268185029Spjd */ 269168404Spjd#define P2END(x, align) (-(~(x) & -(align))) 270185029Spjd 271185029Spjd/* 272185029Spjd * return x rounded up to the next phase (offset) within align. 273185029Spjd * phase should be < align. 274185029Spjd * eg, P2PHASEUP(0x1234, 0x100, 0x10) == 0x1310 (0x13*align + phase) 275185029Spjd * eg, P2PHASEUP(0x5600, 0x100, 0x10) == 0x5610 (0x56*align + phase) 276185029Spjd */ 277168404Spjd#define P2PHASEUP(x, align, phase) ((phase) - (((phase) - (x)) & -(align))) 278185029Spjd 279168404Spjd/* 280185029Spjd * return TRUE if adding len to off would cause it to cross an align 281185029Spjd * boundary. 282185029Spjd * eg, P2BOUNDARY(0x1234, 0xe0, 0x100) == TRUE (0x1234 + 0xe0 == 0x1314) 283185029Spjd * eg, P2BOUNDARY(0x1234, 0x50, 0x100) == FALSE (0x1234 + 0x50 == 0x1284) 284168404Spjd */ 285185029Spjd#define P2BOUNDARY(off, len, align) \ 286185029Spjd (((off) ^ ((off) + (len) - 1)) > (align) - 1) 287185029Spjd 288185029Spjd/* 289185029Spjd * Return TRUE if they have the same highest bit set. 290185029Spjd * eg, P2SAMEHIGHBIT(0x1234, 0x1001) == TRUE (the high bit is 0x1000) 291185029Spjd * eg, P2SAMEHIGHBIT(0x1234, 0x3010) == FALSE (high bit of 0x3010 is 0x2000) 292185029Spjd */ 293168404Spjd#define P2SAMEHIGHBIT(x, y) (((x) ^ (y)) < ((x) & (y))) 294168404Spjd 295168404Spjd/* 296168404Spjd * Typed version of the P2* macros. These macros should be used to ensure 297168404Spjd * that the result is correctly calculated based on the data type of (x), 298168404Spjd * which is passed in as the last argument, regardless of the data 299168404Spjd * type of the alignment. For example, if (x) is of type uint64_t, 300168404Spjd * and we want to round it up to a page boundary using "PAGESIZE" as 301168404Spjd * the alignment, we can do either 302168404Spjd * P2ROUNDUP(x, (uint64_t)PAGESIZE) 303168404Spjd * or 304168404Spjd * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t) 305168404Spjd */ 306168404Spjd#define P2ALIGN_TYPED(x, align, type) \ 307168404Spjd ((type)(x) & -(type)(align)) 308168404Spjd#define P2PHASE_TYPED(x, align, type) \ 309168404Spjd ((type)(x) & ((type)(align) - 1)) 310168404Spjd#define P2NPHASE_TYPED(x, align, type) \ 311168404Spjd (-(type)(x) & ((type)(align) - 1)) 312168404Spjd#define P2ROUNDUP_TYPED(x, align, type) \ 313168404Spjd (-(-(type)(x) & -(type)(align))) 314168404Spjd#define P2END_TYPED(x, align, type) \ 315168404Spjd (-(~(type)(x) & -(type)(align))) 316168404Spjd#define P2PHASEUP_TYPED(x, align, phase, type) \ 317168404Spjd ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align))) 318168404Spjd#define P2CROSS_TYPED(x, y, align, type) \ 319168404Spjd (((type)(x) ^ (type)(y)) > (type)(align) - 1) 320168404Spjd#define P2SAMEHIGHBIT_TYPED(x, y, type) \ 321168404Spjd (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y))) 322168404Spjd 323168404Spjd/* 324168404Spjd * Macros to atomically increment/decrement a variable. mutex and var 325168404Spjd * must be pointers. 326168404Spjd */ 327168404Spjd#define INCR_COUNT(var, mutex) mutex_enter(mutex), (*(var))++, mutex_exit(mutex) 328168404Spjd#define DECR_COUNT(var, mutex) mutex_enter(mutex), (*(var))--, mutex_exit(mutex) 329168404Spjd 330185029Spjd/* 331185029Spjd * Macros to declare bitfields - the order in the parameter list is 332185029Spjd * Low to High - that is, declare bit 0 first. We only support 8-bit bitfields 333185029Spjd * because if a field crosses a byte boundary it's not likely to be meaningful 334185029Spjd * without reassembly in its nonnative endianness. 335185029Spjd */ 336185029Spjd#if defined(_BIT_FIELDS_LTOH) 337185029Spjd#define DECL_BITFIELD2(_a, _b) \ 338185029Spjd uint8_t _a, _b 339185029Spjd#define DECL_BITFIELD3(_a, _b, _c) \ 340185029Spjd uint8_t _a, _b, _c 341185029Spjd#define DECL_BITFIELD4(_a, _b, _c, _d) \ 342185029Spjd uint8_t _a, _b, _c, _d 343185029Spjd#define DECL_BITFIELD5(_a, _b, _c, _d, _e) \ 344185029Spjd uint8_t _a, _b, _c, _d, _e 345185029Spjd#define DECL_BITFIELD6(_a, _b, _c, _d, _e, _f) \ 346185029Spjd uint8_t _a, _b, _c, _d, _e, _f 347185029Spjd#define DECL_BITFIELD7(_a, _b, _c, _d, _e, _f, _g) \ 348185029Spjd uint8_t _a, _b, _c, _d, _e, _f, _g 349185029Spjd#define DECL_BITFIELD8(_a, _b, _c, _d, _e, _f, _g, _h) \ 350185029Spjd uint8_t _a, _b, _c, _d, _e, _f, _g, _h 351185029Spjd#elif defined(_BIT_FIELDS_HTOL) 352185029Spjd#define DECL_BITFIELD2(_a, _b) \ 353185029Spjd uint8_t _b, _a 354185029Spjd#define DECL_BITFIELD3(_a, _b, _c) \ 355185029Spjd uint8_t _c, _b, _a 356185029Spjd#define DECL_BITFIELD4(_a, _b, _c, _d) \ 357185029Spjd uint8_t _d, _c, _b, _a 358185029Spjd#define DECL_BITFIELD5(_a, _b, _c, _d, _e) \ 359185029Spjd uint8_t _e, _d, _c, _b, _a 360185029Spjd#define DECL_BITFIELD6(_a, _b, _c, _d, _e, _f) \ 361185029Spjd uint8_t _f, _e, _d, _c, _b, _a 362185029Spjd#define DECL_BITFIELD7(_a, _b, _c, _d, _e, _f, _g) \ 363185029Spjd uint8_t _g, _f, _e, _d, _c, _b, _a 364185029Spjd#define DECL_BITFIELD8(_a, _b, _c, _d, _e, _f, _g, _h) \ 365185029Spjd uint8_t _h, _g, _f, _e, _d, _c, _b, _a 366185029Spjd#else 367185029Spjd#error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined 368185029Spjd#endif /* _BIT_FIELDS_LTOH */ 369185029Spjd 370168404Spjd#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof) 371168404Spjd 372168404Spjd/* avoid any possibility of clashing with <stddef.h> version */ 373168404Spjd 374168404Spjd#define offsetof(s, m) ((size_t)(&(((s *)0)->m))) 375168404Spjd#endif 376168404Spjd 377219089Spjd/* 378219089Spjd * Find highest one bit set. 379219089Spjd * Returns bit number + 1 of highest bit that is set, otherwise returns 0. 380219089Spjd * High order bit is 31 (or 63 in _LP64 kernel). 381219089Spjd */ 382219089Spjdstatic __inline int 383219089Spjdhighbit(ulong_t i) 384219089Spjd{ 385219089Spjd register int h = 1; 386219089Spjd 387219089Spjd if (i == 0) 388219089Spjd return (0); 389219089Spjd#ifdef _LP64 390219089Spjd if (i & 0xffffffff00000000ul) { 391219089Spjd h += 32; i >>= 32; 392219089Spjd } 393219089Spjd#endif 394219089Spjd if (i & 0xffff0000) { 395219089Spjd h += 16; i >>= 16; 396219089Spjd } 397219089Spjd if (i & 0xff00) { 398219089Spjd h += 8; i >>= 8; 399219089Spjd } 400219089Spjd if (i & 0xf0) { 401219089Spjd h += 4; i >>= 4; 402219089Spjd } 403219089Spjd if (i & 0xc) { 404219089Spjd h += 2; i >>= 2; 405219089Spjd } 406219089Spjd if (i & 0x2) { 407219089Spjd h += 1; 408219089Spjd } 409219089Spjd return (h); 410219089Spjd} 411219089Spjd 412265751Sdelphij/* 413265751Sdelphij * Find highest one bit set. 414265751Sdelphij * Returns bit number + 1 of highest bit that is set, otherwise returns 0. 415265751Sdelphij */ 416265751Sdelphijstatic __inline int 417265751Sdelphijhighbit64(uint64_t i) 418265751Sdelphij{ 419265751Sdelphij int h = 1; 420265751Sdelphij 421265751Sdelphij if (i == 0) 422265751Sdelphij return (0); 423265751Sdelphij if (i & 0xffffffff00000000ULL) { 424265751Sdelphij h += 32; i >>= 32; 425265751Sdelphij } 426265751Sdelphij if (i & 0xffff0000) { 427265751Sdelphij h += 16; i >>= 16; 428265751Sdelphij } 429265751Sdelphij if (i & 0xff00) { 430265751Sdelphij h += 8; i >>= 8; 431265751Sdelphij } 432265751Sdelphij if (i & 0xf0) { 433265751Sdelphij h += 4; i >>= 4; 434265751Sdelphij } 435265751Sdelphij if (i & 0xc) { 436265751Sdelphij h += 2; i >>= 2; 437265751Sdelphij } 438265751Sdelphij if (i & 0x2) { 439265751Sdelphij h += 1; 440265751Sdelphij } 441265751Sdelphij return (h); 442265751Sdelphij} 443265751Sdelphij 444168404Spjd#ifdef __cplusplus 445168404Spjd} 446168404Spjd#endif 447168404Spjd 448168404Spjd#endif /* _SYS_SYSMACROS_H */ 449