lunaix-os/includes/lunaix/ds/ldga.h

   1 /**
   2  * @file ldga.h
   3  * @author Lunaixsky (lunaxisky@qq.com)
   4  * @brief Linker generated array definition
   5  * @version 0.1
   6  * @date 2023-08-18
   7  *
   8  * @copyright Copyright (c) 2023
   9  *
  10  */
  11 #ifndef __LUNAIX_LDGA_H
  12 #define __LUNAIX_LDGA_H
  13
  14 #include <lunaix/types.h>
  15
  16 #define ldga_el_id(ga_name, el_name) __lga_##ga_name##_##el_name
  17 #define ldga_section(ga_name) __attribute__((section(".lga." ga_name)))
  18
  19 #define export_ldga_el(ga_name, el_name, type, val)                            \
  20     type ldga_section(#ga_name) ldga_el_id(ga_name, el_name) = (type)(val)
  21
  22 #define export_ldga_el_sfx(ga_name, el_name, type, val, suffix)                \
  23     type ldga_section(#ga_name "." #suffix) ldga_el_id(ga_name, el_name) =     \
  24       (type)(val)
  25
  26 #define export_ldga_el_idx(ga_name, i, type, val)                              \
  27     export_ldga_el(ga_name, i, type, val)
  28 #define export_ldga_el_anon(ga_name, type, val)                                \
  29     export_ldga_el_idx(ga_name, __COUNTER__, type, val)
  30
  31 #define ldga_foreach(ga_name, el_type, index, el)                              \
  32     extern el_type __lga_##ga_name##_start[], __lga_##ga_name##_end;           \
  33     for (index = 0, el = __lga_##ga_name##_start[index];                       \
  34          (ptr_t)&__lga_##ga_name##_start[index] <                              \
  35          (ptr_t)&__lga_##ga_name##_end;                                        \
  36          el = __lga_##ga_name##_start[++index])
  37
  38 /**
  39  * @brief Invoke all elements in the array named `ga_name` of parameterless
  40  * function pointers
  41  *
  42  */
  43 #define ldga_invoke_fn0(ga_name)                                               \
  44     ({                                                                         \
  45         int i = 0;                                                             \
  46         ptr_t fn0;                                                             \
  47         ldga_foreach(ga_name, ptr_t, i, fn0)                                   \
  48         {                                                                      \
  49             ((void (*)())fn0)();                                               \
  50         }                                                                      \
  51     })
  52
  53 #endif /* __LUNAIX_LDGA_H */