src/system/libroot/os/arch/arm/tls.c

   1 /*
   2 ** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
   3 ** Distributed under the terms of the MIT License.
   4 */
   5
   6 // ToDo: this is a dummy implementation - I've not yet gained enough knowledge
   7 //      to decide how this should be done, so it's just broken now (okay for single
   8 //      threaded apps, though).
   9
  10 // we don't want to have the inline assembly included here
  11 #ifndef _NO_INLINE_ASM
  12 #       define _NO_INLINE_ASM 1
  13 #endif
  14
  15 #include "support/TLS.h"
  16 #include "tls.h"
  17
  18
  19 static int32 gNextSlot = TLS_FIRST_FREE_SLOT;
  20 static void *gSlots[TLS_MAX_KEYS];
  21
  22
  23 int32
  24 tls_allocate(void)
  25 {
  26         int32 next = atomic_add(&gNextSlot, 1);
  27         if (next >= TLS_MAX_KEYS)
  28                 return B_NO_MEMORY;
  29
  30         return next;
  31 }
  32
  33
  34 void *
  35 tls_get(int32 index)
  36 {
  37         return gSlots[index];
  38 }
  39
  40
  41 void **
  42 tls_address(int32 index)
  43 {
  44         return &gSlots[index];
  45 }
  46
  47
  48 void
  49 tls_set(int32 index, void *value)
  50 {
  51         gSlots[index] = value;
  52 }
  53