src/helper/replacements.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2008 by Spencer Oliver                                  *
   9  *   spen@spen-soft.co.uk                                                  *
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  *   This program is distributed in the hope that it will be useful,       *
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  19  *   GNU General Public License for more details.                          *
  20  *                                                                         *
  21  *   You should have received a copy of the GNU General Public License     *
  22  *   along with this program; if not, write to the                         *
  23  *   Free Software Foundation, Inc.,                                       *
  24  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  25  ***************************************************************************/
  26 #ifndef REPLACEMENTS_H
  27 #define REPLACEMENTS_H
  28
  29 #ifdef HAVE_CONFIG_H
  30 #include "config.h"
  31 #endif
  32
  33 #include "types.h"
  34
  35 #if BUILD_ECOSBOARD
  36 #include <pkgconf/system.h>
  37 #include <stdlib.h>
  38 #endif
  39
  40 #ifdef HAVE_SYS_SELECT_H
  41 #include <sys/select.h> /* select, FD_SET and friends (POSIX.1-2001) */
  42 #endif
  43
  44 #ifdef HAVE_SYS_TIME_H
  45 #include <sys/time.h> /* FD_SET and friends (pre-POSIX.1-2001) */
  46 #endif
  47
  48 /* include necessary headers for socket functionality */
  49 #ifdef _WIN32
  50 #include <winsock2.h>
  51 #include <ws2tcpip.h>
  52 #else
  53 #include <sys/socket.h>
  54 #include <sys/poll.h>
  55 #include <netinet/in.h>
  56 #include <unistd.h>
  57 #include <fcntl.h>
  58 #endif
  59
  60 #ifdef HAVE_SYS_PARAM_H
  61 #include <sys/param.h> /* for MIN/MAX macros */
  62 #endif
  63
  64 /* MIN,MAX macros */
  65 #ifndef MIN
  66 #define MIN(a,b) (((a)<(b))?(a):(b))
  67 #endif
  68 #ifndef MAX
  69 #define MAX(a,b) (((a)>(b))?(a):(b))
  70 #endif
  71
  72 /* for systems that do not support ENOTSUP
  73  * win32 being one of them */
  74 #ifndef ENOTSUP
  75 #define ENOTSUP 134             /* Not supported */
  76 #endif
  77
  78 #ifndef HAVE_SYS_TIME_H
  79
  80 #ifndef _TIMEVAL_DEFINED
  81 #define _TIMEVAL_DEFINED
  82
  83 struct timeval {
  84         long tv_sec;
  85         long tv_usec;
  86 };
  87
  88 #endif /* _TIMEVAL_DEFINED */
  89
  90 #endif
  91
  92 /* gettimeofday() */
  93 #ifndef HAVE_GETTIMEOFDAY
  94
  95 #ifdef _WIN32
  96 struct timezone {
  97         int tz_minuteswest;
  98         int tz_dsttime;
  99 };
 100 #endif
 101 struct timezone;
 102
 103 extern int gettimeofday(struct timeval *tv, struct timezone *tz);
 104 #endif
 105
 106 /**** clear_malloc & fill_malloc ****/
 107 void *clear_malloc(size_t size);
 108 void *fill_malloc(size_t size);
 109
 110 /*
 111  * Now you have 3 ways for the malloc function:
 112  *
 113  * 1. Do not change anything, use the original malloc
 114  *
 115  * 2. Use the clear_malloc function instead of the original malloc.
 116  *    In this case you must use the following define:
 117  *    #define malloc((_a)) clear_malloc((_a))
 118  *
 119  * 3. Use the fill_malloc function instead of the original malloc.
 120  *    In this case you must use the following define:
 121  *    #define malloc((_a)) fill_malloc((_a))
 122  *
 123  * We have figured out that there could exist some malloc problems
 124  * where variables are using without to be initialise. To find this
 125  * places, use the fill_malloc function. With this function we want
 126  * to initialize memory to some known bad state. This is quite easily
 127  * spotted in the debugger and will trap to an invalid address.
 128  *
 129  * clear_malloc can be used if you want to set not initialise
 130  * variable to 0.
 131  *
 132  * If you do not want to change the malloc function, to not use one of
 133  * the following macros. Which is the default way.
 134  */
 135
 136 /* #define malloc(_a) clear_malloc(_a) */
 137 /* #define malloc(_a) fill_malloc(_a) */
 138
 139 /* GNU extensions to the C library that may be missing on some systems */
 140 #ifndef HAVE_STRNDUP
 141 extern char* strndup(const char *s, size_t n);
 142 #endif /* HAVE_STRNDUP */
 143
 144 #ifndef HAVE_STRNLEN
 145 extern size_t strnlen(const char *s, size_t maxlen);
 146 #endif /* HAVE_STRNLEN */
 147
 148 #ifndef HAVE_USLEEP
 149 #ifdef _WIN32
 150 static __inline unsigned usleep(unsigned int usecs)
 151 {
 152         Sleep((usecs/1000));
 153         return 0;
 154 }
 155 #else
 156 #if BUILD_ECOSBOARD
 157 void usleep(int us);
 158 #else
 159 #error no usleep defined for your platform
 160 #endif
 161 #endif
 162 #endif /* HAVE_USLEEP */
 163
 164 /* Windows specific */
 165 #ifdef _WIN32
 166
 167 #define WIN32_LEAN_AND_MEAN
 168 #include <windows.h>
 169 #include <time.h>
 170
 171 /* win32 systems do not support ETIMEDOUT */
 172
 173 #ifndef ETIMEDOUT
 174 #define ETIMEDOUT WSAETIMEDOUT
 175 #endif
 176
 177 #if IS_MINGW == 1
 178 static __inline unsigned char inb(unsigned short int port)
 179 {
 180         unsigned char _v;
 181         __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
 182         return _v;
 183 }
 184
 185 static __inline void outb(unsigned char value, unsigned short int port)
 186 {
 187         __asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
 188 }
 189
 190 #endif /* IS_MINGW */
 191
 192 int win_select(int max_fd, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeval *tv);
 193
 194 #endif  /* _WIN32 */
 195
 196 /* generic socket functions for Windows and Posix */
 197 static __inline int write_socket( int handle, const void *buffer, unsigned int count )
 198 {
 199 #ifdef _WIN32
 200         return send(handle, buffer, count, 0);
 201 #else
 202         return write(handle, buffer, count);
 203 #endif
 204 }
 205
 206 static __inline int read_socket( int handle, void *buffer, unsigned int count )
 207 {
 208 #ifdef _WIN32
 209         return recv(handle, buffer, count, 0);
 210 #else
 211         return read(handle, buffer, count);
 212 #endif
 213 }
 214
 215 static __inline int close_socket(int sock)
 216 {
 217 #ifdef _WIN32
 218         return closesocket(sock);
 219 #else
 220         return close(sock);
 221 #endif
 222 }
 223
 224 static __inline void socket_nonblock(int fd)
 225 {
 226 #ifdef _WIN32
 227         unsigned long nonblock = 1;
 228         ioctlsocket(fd, FIONBIO, &nonblock );
 229 #else
 230         int oldopts = fcntl(fd, F_GETFL, 0);
 231         fcntl(fd, F_SETFL, oldopts | O_NONBLOCK);
 232 #endif
 233 }
 234
 235 static __inline int socket_select(int max_fd, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeval *tv)
 236 {
 237 #ifdef _WIN32
 238         return win_select(max_fd, rfds, wfds, efds, tv);
 239 #else
 240         return select(max_fd, rfds, wfds, efds, tv);
 241 #endif
 242 }
 243
 244 #ifndef HAVE_ELF_H
 245
 246 typedef struct
 247 {
 248         unsigned char   e_ident[16];    /* Magic number and other info */
 249         u16     e_type;                 /* Object file type */
 250         u16     e_machine;              /* Architecture */
 251         u32     e_version;              /* Object file version */
 252         u32 e_entry;            /* Entry point virtual address */
 253         u32 e_phoff;            /* Program header table file offset */
 254         u32     e_shoff;                /* Section header table file offset */
 255         u32     e_flags;                /* Processor-specific flags */
 256         u16     e_ehsize;               /* ELF header size in bytes */
 257         u16     e_phentsize;    /* Program header table entry size */
 258         u16     e_phnum;                /* Program header table entry count */
 259         u16     e_shentsize;    /* Section header table entry size */
 260         u16     e_shnum;                /* Section header table entry count */
 261         u16     e_shstrndx;             /* Section header string table index */
 262 } Elf32_Ehdr;
 263
 264 #define ELFMAG          "\177ELF"
 265 #define SELFMAG         4
 266
 267 #define EI_CLASS        4               /* File class byte index */
 268 #define ELFCLASS32      1               /* 32-bit objects */
 269 #define ELFCLASS64      2               /* 64-bit objects */
 270
 271 #define EI_DATA         5               /* Data encoding byte index */
 272 #define ELFDATA2LSB     1               /* 2's complement, little endian */
 273 #define ELFDATA2MSB     2               /* 2's complement, big endian */
 274
 275 typedef struct
 276 {
 277         u32 p_type;                     /* Segment type */
 278         u32 p_offset;           /* Segment file offset */
 279         u32 p_vaddr;            /* Segment virtual address */
 280         u32 p_paddr;            /* Segment physical address */
 281         u32 p_filesz;           /* Segment size in file */
 282         u32 p_memsz;            /* Segment size in memory */
 283         u32 p_flags;            /* Segment flags */
 284         u32 p_align;            /* Segment alignment */
 285 } Elf32_Phdr;
 286
 287 #define PT_LOAD         1               /* Loadable program segment */
 288
 289 #endif /* HAVE_ELF_H */
 290
 291 #endif /* REPLACEMENTS_H */