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