bits.c revision 72445
1178151Srpaulo/* 2189769Srpaulo * Copyright (c) 1997 - 2000 Kungliga Tekniska H�gskolan 3189769Srpaulo * (Royal Institute of Technology, Stockholm, Sweden). 4232090Sjkim * All rights reserved. 5178151Srpaulo * 6178151Srpaulo * Redistribution and use in source and binary forms, with or without 7178151Srpaulo * modification, are permitted provided that the following conditions 8178151Srpaulo * are met: 9178151Srpaulo * 10178151Srpaulo * 1. Redistributions of source code must retain the above copyright 11178151Srpaulo * notice, this list of conditions and the following disclaimer. 12178151Srpaulo * 13178151Srpaulo * 2. Redistributions in binary form must reproduce the above copyright 14178151Srpaulo * notice, this list of conditions and the following disclaimer in the 15178151Srpaulo * documentation and/or other materials provided with the distribution. 16178151Srpaulo * 17178151Srpaulo * 3. Neither the name of the Institute nor the names of its contributors 18178151Srpaulo * may be used to endorse or promote products derived from this software 19178151Srpaulo * without specific prior written permission. 20178151Srpaulo * 21178151Srpaulo * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22178151Srpaulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23178151Srpaulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24178151Srpaulo * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25178151Srpaulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26178151Srpaulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27178151Srpaulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28178151Srpaulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29178151Srpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30232090Sjkim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31197102Sjkim * SUCH DAMAGE. 32178151Srpaulo */ 33178151Srpaulo 34178151Srpaulo#ifdef HAVE_CONFIG_H 35178151Srpaulo#include <config.h> 36178151SrpauloRCSID("$Id: bits.c,v 1.18 2000/08/27 05:42:46 assar Exp $"); 37178151Srpaulo#endif 38178151Srpaulo#include <stdio.h> 39178151Srpaulo#include <string.h> 40178151Srpaulo#include <stdlib.h> 41197102Sjkim#include <ctype.h> 42178151Srpaulo 43197102Sjkim#define BITSIZE(TYPE) \ 44178151Srpaulo{ \ 45197205Sjkim int b = 0; TYPE x = 1, zero = 0; char *pre = "u"; \ 46197102Sjkim char tmp[128], tmp2[128]; \ 47178151Srpaulo while(x){ x <<= 1; b++; if(x < zero) pre=""; } \ 48178151Srpaulo if(b >= len){ \ 49178151Srpaulo int tabs; \ 50232090Sjkim sprintf(tmp, "%sint%d_t" , pre, len); \ 51178151Srpaulo sprintf(tmp2, "typedef %s %s;", #TYPE, tmp); \ 52189769Srpaulo tabs = 5 - strlen(tmp2) / 8; \ 53232090Sjkim fprintf(f, "%s", tmp2); \ 54232090Sjkim while(tabs-- > 0) fprintf(f, "\t"); \ 55232090Sjkim fprintf(f, "/* %2d bits */\n", b); \ 56232090Sjkim return; \ 57189769Srpaulo } \ 58189769Srpaulo} 59189769Srpaulo 60189769Srpaulo#ifndef HAVE___ATTRIBUTE__ 61189769Srpaulo#define __attribute__(x) 62178151Srpaulo#endif 63197102Sjkim 64178151Srpaulostatic void 65197205Sjkimtry_signed(FILE *f, int len) __attribute__ ((unused)); 66232090Sjkim 67232090Sjkimstatic void 68232090Sjkimtry_unsigned(FILE *f, int len) __attribute__ ((unused)); 69232090Sjkim 70197102Sjkimstatic int 71197102Sjkimprint_bt(FILE *f, int flag) __attribute__ ((unused)); 72180312Srpaulo 73178151Srpaulostatic void 74178151Srpaulotry_signed(FILE *f, int len) 75197102Sjkim{ 76197102Sjkim BITSIZE(signed char); 77197102Sjkim BITSIZE(short); 78197102Sjkim BITSIZE(int); 79232090Sjkim BITSIZE(long); 80232090Sjkim#ifdef HAVE_LONG_LONG 81178151Srpaulo BITSIZE(long long); 82189769Srpaulo#endif 83189769Srpaulo fprintf(f, "/* There is no %d bit type */\n", len); 84189769Srpaulo} 85189769Srpaulo 86189769Srpaulostatic void 87189769Srpaulotry_unsigned(FILE *f, int len) 88189769Srpaulo{ 89232090Sjkim BITSIZE(unsigned char); 90232090Sjkim BITSIZE(unsigned short); 91178151Srpaulo BITSIZE(unsigned int); 92178151Srpaulo BITSIZE(unsigned long); 93178151Srpaulo#ifdef HAVE_LONG_LONG 94178151Srpaulo BITSIZE(unsigned long long); 95232090Sjkim#endif 96178151Srpaulo fprintf(f, "/* There is no %d bit type */\n", len); 97197102Sjkim} 98178151Srpaulo 99189769Srpaulostatic int 100232090Sjkimprint_bt(FILE *f, int flag) 101189769Srpaulo{ 102197102Sjkim if(flag == 0){ 103232090Sjkim fprintf(f, "/* For compatibility with various type definitions */\n"); 104232090Sjkim fprintf(f, "#ifndef __BIT_TYPES_DEFINED__\n"); 105178151Srpaulo fprintf(f, "#define __BIT_TYPES_DEFINED__\n"); 106197102Sjkim fprintf(f, "\n"); 107232090Sjkim } 108232090Sjkim return 1; 109232090Sjkim} 110232090Sjkim 111232090Sjkimint main(int argc, char **argv) 112232090Sjkim{ 113197102Sjkim FILE *f; 114197102Sjkim int flag; 115197102Sjkim char *fn, *hb; 116178151Srpaulo 117178151Srpaulo if(argc < 2){ 118178151Srpaulo fn = "bits.h"; 119178151Srpaulo hb = "__BITS_H__"; 120189769Srpaulo f = stdout; 121189769Srpaulo } else { 122189769Srpaulo char *p; 123189769Srpaulo fn = argv[1]; 124189769Srpaulo hb = malloc(strlen(fn) + 5); 125189769Srpaulo sprintf(hb, "__%s__", fn); 126189769Srpaulo for(p = hb; *p; p++){ 127189769Srpaulo if(!isalnum((unsigned char)*p)) 128189769Srpaulo *p = '_'; 129178151Srpaulo } 130189769Srpaulo f = fopen(argv[1], "w"); 131178151Srpaulo } 132189769Srpaulo fprintf(f, "/* %s -- this file was generated for %s by\n", fn, HOST); 133189769Srpaulo fprintf(f, " %*s %s */\n\n", (int)strlen(fn), "", 134189769Srpaulo "$Id: bits.c,v 1.18 2000/08/27 05:42:46 assar Exp $"); 135189769Srpaulo fprintf(f, "#ifndef %s\n", hb); 136178151Srpaulo fprintf(f, "#define %s\n", hb); 137178151Srpaulo fprintf(f, "\n"); 138178151Srpaulo#ifdef HAVE_SYS_TYPES_H 139178151Srpaulo fprintf(f, "#include <sys/types.h>\n"); 140189769Srpaulo#endif 141189769Srpaulo#ifdef HAVE_INTTYPES_H 142189769Srpaulo fprintf(f, "#include <inttypes.h>\n"); 143189769Srpaulo#endif 144178151Srpaulo#ifdef HAVE_SYS_BITYPES_H 145178151Srpaulo fprintf(f, "#include <sys/bitypes.h>\n"); 146189769Srpaulo#endif 147189769Srpaulo#ifdef HAVE_BIND_BITYPES_H 148178151Srpaulo fprintf(f, "#include <bind/bitypes.h>\n"); 149178151Srpaulo#endif 150189769Srpaulo#ifdef HAVE_NETINET_IN6_MACHTYPES_H 151178151Srpaulo fprintf(f, "#include <netinet/in6_machtypes.h>\n"); 152178151Srpaulo#endif 153178151Srpaulo fprintf(f, "\n"); 154197102Sjkim 155197102Sjkim flag = 0; 156178151Srpaulo#ifndef HAVE_INT8_T 157178151Srpaulo flag = print_bt(f, flag); 158189769Srpaulo try_signed (f, 8); 159189769Srpaulo#endif /* HAVE_INT8_T */ 160189769Srpaulo#ifndef HAVE_INT16_T 161178151Srpaulo flag = print_bt(f, flag); 162178151Srpaulo try_signed (f, 16); 163178151Srpaulo#endif /* HAVE_INT16_T */ 164178151Srpaulo#ifndef HAVE_INT32_T 165178151Srpaulo flag = print_bt(f, flag); 166178151Srpaulo try_signed (f, 32); 167178151Srpaulo#endif /* HAVE_INT32_T */ 168189769Srpaulo#if 0 169178151Srpaulo#ifndef HAVE_INT64_T 170178151Srpaulo flag = print_bt(f, flag); 171178151Srpaulo try_signed (f, 64); 172178151Srpaulo#endif /* HAVE_INT64_T */ 173189769Srpaulo#endif 174178151Srpaulo 175197102Sjkim#ifndef HAVE_UINT8_T 176189769Srpaulo flag = print_bt(f, flag); 177189769Srpaulo try_unsigned (f, 8); 178178151Srpaulo#endif /* HAVE_UINT8_T */ 179189769Srpaulo#ifndef HAVE_UINT16_T 180178151Srpaulo flag = print_bt(f, flag); 181178151Srpaulo try_unsigned (f, 16); 182178151Srpaulo#endif /* HAVE_UINT16_T */ 183178151Srpaulo#ifndef HAVE_UINT32_T 184189769Srpaulo flag = print_bt(f, flag); 185178151Srpaulo try_unsigned (f, 32); 186197205Sjkim#endif /* HAVE_UINT32_T */ 187197102Sjkim#if 0 188241885Seadler#ifndef HAVE_UINT64_T 189241885Seadler flag = print_bt(f, flag); 190241885Seadler try_unsigned (f, 64); 191197205Sjkim#endif /* HAVE_UINT64_T */ 192197205Sjkim#endif 193197102Sjkim 194197102Sjkim#define X(S) fprintf(f, "typedef uint" #S "_t u_int" #S "_t;\n") 195197102Sjkim#ifndef HAVE_U_INT8_T 196197205Sjkim flag = print_bt(f, flag); 197197205Sjkim X(8); 198197102Sjkim#endif /* HAVE_U_INT8_T */ 199197102Sjkim#ifndef HAVE_U_INT16_T 200197102Sjkim flag = print_bt(f, flag); 201197102Sjkim X(16); 202232090Sjkim#endif /* HAVE_U_INT16_T */ 203232090Sjkim#ifndef HAVE_U_INT32_T 204232090Sjkim flag = print_bt(f, flag); 205197102Sjkim X(32); 206197102Sjkim#endif /* HAVE_U_INT32_T */ 207178151Srpaulo#if 0 208178151Srpaulo#ifndef HAVE_U_INT64_T 209197102Sjkim flag = print_bt(f, flag); 210197102Sjkim X(64); 211178151Srpaulo#endif /* HAVE_U_INT64_T */ 212178151Srpaulo#endif 213178151Srpaulo 214178151Srpaulo if(flag){ 215189769Srpaulo fprintf(f, "\n"); 216178151Srpaulo fprintf(f, "#endif /* __BIT_TYPES_DEFINED__ */\n\n"); 217232090Sjkim } 218232090Sjkim fprintf(f, "#endif /* %s */\n", hb); 219189769Srpaulo return 0; 220178151Srpaulo} 221178151Srpaulo