libc-top-half/musl/src/internal/libc.h

   1 #ifndef LIBC_H
   2 #define LIBC_H
   3
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6 #include <limits.h>
   7
   8 struct __locale_map;
   9
  10 struct __locale_struct {
  11         const struct __locale_map *cat[6];
  12 };
  13
  14 struct tls_module {
  15         struct tls_module *next;
  16         void *image;
  17         size_t len, size, align, offset;
  18 };
  19
  20 struct __libc {
  21 #ifdef __wasilibc_unmodified_upstream
  22         char can_do_threads;
  23 #endif
  24 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
  25         char threaded;
  26 #endif
  27 #ifdef __wasilibc_unmodified_upstream // WASI doesn't currently use any code that needs "secure" mode
  28         char secure;
  29 #endif
  30 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
  31         volatile signed char need_locks;
  32         int threads_minus_1;
  33 #endif
  34 #ifdef __wasilibc_unmodified_upstream // WASI has no auxv
  35         size_t *auxv;
  36 #endif
  37 #ifdef __wasilibc_unmodified_upstream // WASI use different TLS implement
  38         struct tls_module *tls_head;
  39         size_t tls_size, tls_align, tls_cnt;
  40 #endif
  41 #ifdef __wasilibc_unmodified_upstream // WASI doesn't get the page size from auxv
  42         size_t page_size;
  43 #endif
  44         struct __locale_struct global_locale;
  45 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
  46 #else
  47         struct __locale_struct *current_locale;
  48 #endif
  49 };
  50
  51 #ifndef PAGE_SIZE
  52 #define PAGE_SIZE libc.page_size
  53 #endif
  54
  55 extern hidden struct __libc __libc;
  56 #define libc __libc
  57
  58 hidden void __init_libc(char **, char *);
  59 hidden void __init_tls(size_t *);
  60 hidden void __init_ssp(void *);
  61 hidden void __libc_start_init(void);
  62 hidden void __funcs_on_exit(void);
  63 hidden void __funcs_on_quick_exit(void);
  64 hidden void __libc_exit_fini(void);
  65 hidden void __fork_handler(int);
  66
  67 extern hidden size_t __hwcap;
  68 extern hidden size_t __sysinfo;
  69 extern char *__progname, *__progname_full;
  70
  71 extern hidden const char __libc_version[];
  72
  73 hidden void __synccall(void (*)(void *), void *);
  74 hidden int __setxid(int, int, int, int);
  75
  76 #endif