src/system/libroot/libroot_init.c

   1 /*
   2  * Copyright 2003-2009, Axel Dörfler, axeld@pinc-software.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include <pthread.h>
   8 #include <string.h>
   9
  10 #include <OS.h>
  11 #include <image.h>
  12
  13 #include <user_runtime.h>
  14
  15 #include <runtime_loader.h>
  16
  17 #include <fork.h>
  18 #include <libroot_private.h>
  19 #include <pthread_private.h>
  20
  21
  22 void initialize_before(image_id imageID);
  23 void terminate_after(image_id imageID);
  24
  25 struct rld_export *__gRuntimeLoader = NULL;
  26         // This little bugger is set to something meaningful by the runtime loader
  27         // Ugly, eh?
  28
  29 const void* __gCommPageAddress;
  30
  31 char *__progname = NULL;
  32 int __libc_argc;
  33 char **__libc_argv;
  34
  35 int __gABIVersion;
  36 int32 __gCPUCount;
  37
  38 char _single_threaded = true;
  39         // determines if I/O locking needed; needed for BeOS compatibility
  40
  41 thread_id __main_thread_id;
  42 char **argv_save;
  43         // needed for BeOS compatibility - they are set in the startup code
  44         // (have a look at the glue/ directory)
  45
  46 int _data_offset_main_;
  47         // this is obviously needed for R4.5 compatiblity
  48
  49
  50 void
  51 initialize_before(image_id imageID)
  52 {
  53         system_info info;
  54         char *programPath = __gRuntimeLoader->program_args->args[0];
  55         __gCommPageAddress = __gRuntimeLoader->commpage_address;
  56         __gABIVersion = __gRuntimeLoader->abi_version;
  57
  58         if (programPath) {
  59                 if ((__progname = strrchr(programPath, '/')) == NULL)
  60                         __progname = programPath;
  61                 else
  62                         __progname++;
  63         }
  64
  65         __libc_argc = __gRuntimeLoader->program_args->arg_count;
  66         __libc_argv = __gRuntimeLoader->program_args->args;
  67
  68         __gRuntimeLoader->call_atexit_hooks_for_range
  69                 = _call_atexit_hooks_for_range;
  70
  71         if (__gRuntimeLoader->program_args->umask != (mode_t)-1)
  72                 umask(__gRuntimeLoader->program_args->umask);
  73
  74         pthread_self()->id = find_thread(NULL);
  75
  76         get_system_info(&info);
  77         __gCPUCount = info.cpu_count;
  78
  79         __init_time((addr_t)__gCommPageAddress);
  80         __init_env(__gRuntimeLoader->program_args);
  81         __init_heap();
  82         __init_env_post_heap();
  83         __init_pwd_backend();
  84         __set_stack_protection();
  85 }
  86
  87
  88 void _init_c_library_(void);
  89 void
  90 _init_c_library_(void)
  91 {
  92         // This function is called from the BeOS start_dyn.o - so it's called once
  93         // for every application that was compiled under BeOS.
  94         // Our libroot functions are already initialized above, so we don't have to
  95         // do anything here.
  96 }
  97
  98
  99 void
 100 terminate_after(image_id id)
 101 {
 102         __heap_terminate_after();
 103 }