src/helper/replacements.h

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