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  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23 #ifndef REPLACEMENTS_H
  24 #define REPLACEMENTS_H
  25
  26 #ifdef HAVE_CONFIG_H
  27 #include "config.h"
  28 #endif
  29
  30 #include "types.h"
  31
  32 #if BUILD_ECOSBOARD
  33 #include <pkgconf/system.h>
  34 #include <stdlib.h>
  35 #include <sys/select.h>
  36 #endif
  37
  38 /* include necessary headers for socket functionality */
  39 #ifdef _WIN32
  40 #include <winsock2.h>
  41 #else
  42 #include <sys/socket.h>
  43 #include <sys/poll.h>
  44 #include <netinet/in.h>
  45 #include <unistd.h>
  46 #include <fcntl.h>
  47 #endif
  48
  49 #ifdef HAVE_SYS_PARAM_H
  50 #include <sys/param.h> /* for MIN/MAX macros */
  51 #endif
  52
  53 /* MIN,MAX macros */
  54 #ifndef MIN
  55 #define MIN(a,b) (((a)<(b))?(a):(b))
  56 #endif
  57 #ifndef MAX
  58 #define MAX(a,b) (((a)>(b))?(a):(b))
  59 #endif
  60
  61 /* for systems that do not support ENOTSUP
  62  * win32 being one of them */
  63 #ifndef ENOTSUP
  64 #define ENOTSUP 134             /* Not supported */
  65 #endif
  66
  67 /* gettimeofday() */
  68 #ifndef HAVE_GETTIMEOFDAY
  69
  70 #ifndef _TIMEVAL_DEFINED
  71 #define _TIMEVAL_DEFINED
  72
  73 struct timeval {
  74         long tv_sec;
  75         long tv_usec;
  76 };
  77 #endif /* _TIMEVAL_DEFINED */
  78
  79 struct timezone {
  80     int tz_minuteswest;
  81         int tz_dsttime;
  82 };
  83
  84 extern int gettimeofday(struct timeval *tv, struct timezone *tz);
  85 #endif
  86
  87 /**** clear_malloc & fill_malloc ****/
  88 void *clear_malloc(size_t size);
  89 void *fill_malloc(size_t size);
  90
  91 /*
  92  * Now you have 3 ways for the malloc function:
  93  *
  94  * 1. Do not change anything, use the original malloc
  95  *
  96  * 2. Use the clear_malloc function instead of the original malloc.
  97  *    In this case you must use the following define:
  98  *    #define malloc((_a)) clear_malloc((_a))
  99  *
 100  * 3. Use the fill_malloc function instead of the original malloc.
 101  *    In this case you must use the following define:
 102  *    #define malloc((_a)) fill_malloc((_a))
 103  *
 104  * We have figured out that there could exist some malloc problems
 105  * where variables are using without to be initialise. To find this
 106  * places, use the fill_malloc function. With this function we want
 107  * to initialize memory to some known bad state. This is quite easily
 108  * spotted in the debugger and will trap to an invalid address.
 109  *
 110  * clear_malloc can be used if you want to set not initialise
 111  * variable to 0.
 112  *
 113  * If you do not want to change the malloc function, to not use one of
 114  * the following macros. Which is the default way.
 115  */
 116
 117 /* #define malloc(_a) clear_malloc(_a) */
 118 /* #define malloc(_a) fill_malloc(_a) */
 119
 120 /* GNU extensions to the C library that may be missing on some systems */
 121 #ifndef HAVE_STRNDUP
 122 extern char* strndup(const char *s, size_t n);
 123 #endif /* HAVE_STRNDUP */
 124
 125 #ifndef HAVE_STRNLEN
 126 extern size_t strnlen(const char *s, size_t maxlen);
 127 #endif /* HAVE_STRNLEN */
 128
 129 #ifndef HAVE_USLEEP
 130 #ifdef _WIN32
 131 static __inline unsigned usleep(unsigned int usecs)
 132 {
 133         Sleep((usecs/1000));
 134         return 0;
 135 }
 136 #else
 137 #if BUILD_ECOSBOARD
 138 void usleep(int us);
 139 #else
 140 #error no usleep defined for your platform
 141 #endif
 142 #endif
 143 #endif /* HAVE_USLEEP */
 144
 145 /* Windows specific */
 146 #ifdef _WIN32
 147
 148 #define WIN32_LEAN_AND_MEAN
 149 #include <windows.h>
 150 #include <time.h>
 151
 152 #if IS_MINGW == 1
 153 static __inline unsigned char inb(unsigned short int port)
 154 {
 155         unsigned char _v;
 156         __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
 157         return _v;
 158 }
 159
 160 static __inline void outb(unsigned char value, unsigned short int port)
 161 {
 162         __asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
 163 }
 164
 165 #endif /* IS_MINGW */
 166 #endif  /* _WIN32 */
 167
 168 /* generic socket functions for Windows and Posix */
 169 static __inline int write_socket( int handle, const void *buffer, unsigned int count )
 170 {
 171 #ifdef _WIN32
 172     return send(handle, buffer, count, 0);
 173 #else
 174     return write(handle, buffer, count);
 175 #endif
 176 }
 177
 178 static __inline int read_socket( int handle, void *buffer, unsigned int count )
 179 {
 180 #ifdef _WIN32
 181     return recv(handle, buffer, count, 0);
 182 #else
 183     return read(handle, buffer, count);
 184 #endif
 185 }
 186
 187 static __inline int close_socket(int sock)
 188 {
 189 #ifdef _WIN32
 190     return closesocket(sock);
 191 #else
 192     return close(sock);
 193 #endif
 194 }
 195
 196 static __inline void socket_nonblock(int fd)
 197 {
 198 #ifdef _WIN32
 199         unsigned long nonblock = 1;
 200         ioctlsocket(fd, FIONBIO, &nonblock );
 201 #else
 202         int oldopts = fcntl(fd, F_GETFL, 0);
 203         fcntl(fd, F_SETFL, oldopts | O_NONBLOCK);
 204 #endif
 205 }
 206
 207 #ifndef HAVE_ELF_H
 208
 209 typedef struct
 210 {
 211         unsigned char   e_ident[16];    /* Magic number and other info */
 212         u16     e_type;                 /* Object file type */
 213         u16     e_machine;              /* Architecture */
 214         u32     e_version;              /* Object file version */
 215         u32 e_entry;            /* Entry point virtual address */
 216         u32 e_phoff;            /* Program header table file offset */
 217         u32     e_shoff;                /* Section header table file offset */
 218         u32     e_flags;                /* Processor-specific flags */
 219         u16     e_ehsize;               /* ELF header size in bytes */
 220         u16     e_phentsize;            /* Program header table entry size */
 221         u16     e_phnum;                /* Program header table entry count */
 222         u16     e_shentsize;            /* Section header table entry size */
 223         u16     e_shnum;                /* Section header table entry count */
 224         u16     e_shstrndx;             /* Section header string table index */
 225 } Elf32_Ehdr;
 226
 227 #define ELFMAG          "\177ELF"
 228 #define SELFMAG         4
 229
 230 #define EI_CLASS        4               /* File class byte index */
 231 #define ELFCLASS32      1               /* 32-bit objects */
 232 #define ELFCLASS64      2               /* 64-bit objects */
 233
 234 #define EI_DATA         5               /* Data encoding byte index */
 235 #define ELFDATA2LSB     1               /* 2's complement, little endian */
 236 #define ELFDATA2MSB     2               /* 2's complement, big endian */
 237
 238 typedef struct
 239 {
 240         u32 p_type;                     /* Segment type */
 241         u32 p_offset;           /* Segment file offset */
 242         u32 p_vaddr;            /* Segment virtual address */
 243         u32 p_paddr;            /* Segment physical address */
 244         u32 p_filesz;           /* Segment size in file */
 245         u32 p_memsz;            /* Segment size in memory */
 246         u32 p_flags;            /* Segment flags */
 247         u32 p_align;            /* Segment alignment */
 248 } Elf32_Phdr;
 249
 250 #define PT_LOAD         1               /* Loadable program segment */
 251
 252 #endif /* HAVE_ELF_H */
 253
 254 #endif /* REPLACEMENTS_H */