src/system/glue/init_term_dyn.c

   1 /*
   2  * Copyright 2003-2006, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include <user_runtime.h>
   8 #include <image.h>
   9
  10 #include "init_term_dyn.h"
  11
  12
  13 // include the version glue -- it's separate for the kernel add-ons only
  14 #include "haiku_version_glue.c"
  15
  16
  17 /*!     These functions are called from _init()/_fini() (in crti.S, crtn.S)
  18         __haiku_{init,term}_before() is called before crtbegin/end code is
  19         executed, __haiku_{init,term}_after() after this. crtbegin contains
  20         code to initialize all global constructors and other GCC related things
  21         (like exception frames).
  22  */
  23
  24
  25 #define HIDDEN_FUNCTION(function)   asm volatile(".hidden " #function)
  26
  27
  28 void
  29 __haiku_init_before(image_id id)
  30 {
  31         void (*before)(image_id);
  32
  33         HIDDEN_FUNCTION(__haiku_init_before);
  34
  35         if (get_image_symbol(id, B_INIT_BEFORE_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT,
  36                         (void**)&before) == B_OK) {
  37                 before(id);
  38         }
  39 }
  40
  41
  42 void
  43 __haiku_init_after(image_id id)
  44 {
  45         void (*after)(image_id);
  46
  47         HIDDEN_FUNCTION(__haiku_init_after);
  48
  49         if (get_image_symbol(id, B_INIT_AFTER_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT,
  50                         (void**)&after) == B_OK) {
  51                 after(id);
  52         }
  53 }
  54
  55
  56 void
  57 __haiku_term_before(image_id id)
  58 {
  59         void (*before)(image_id);
  60
  61         HIDDEN_FUNCTION(__haiku_term_before);
  62
  63         if (get_image_symbol(id, B_TERM_BEFORE_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT,
  64                         (void**)&before) == B_OK) {
  65                 before(id);
  66         }
  67 }
  68
  69
  70 void
  71 __haiku_term_after(image_id id)
  72 {
  73         void (*after)(image_id);
  74
  75         HIDDEN_FUNCTION(__haiku_term_after);
  76
  77         if (get_image_symbol(id, B_TERM_AFTER_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT,
  78                         (void**)&after) == B_OK) {
  79                 after(id);
  80         }
  81 }