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