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