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