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