ports/sysdeps/arm/tls-macros.h

   1 #ifdef __thumb2__
   2 #define ARM_PC_OFFSET "4"
   3 #else
   4 #define ARM_PC_OFFSET "8"
   5 #endif
   6
   7 #define TLS_LE(x)                                       \
   8   ({ int *__result;                                     \
   9      void *tp = __builtin_thread_pointer ();            \
  10      asm ("ldr %0, 1f; "                                \
  11           "add %0, %1, %0; "                            \
  12           "b 2f; "                                      \
  13           ".align 2; "                                  \
  14           "1: .word " #x "(tpoff); "                    \
  15           "2: "                                         \
  16           : "=&r" (__result) : "r" (tp));               \
  17      __result; })
  18
  19 #ifdef __thumb2__
  20 #define TLS_IE(x)                                       \
  21   ({ int *__result;                                     \
  22      void *tp = __builtin_thread_pointer ();            \
  23      asm ("ldr %0, 1f; "                                \
  24           "3: add %0, pc, %0;"                          \
  25           "ldr %0, [%0];"                               \
  26           "add %0, %1, %0; "                            \
  27           "b 2f; "                                      \
  28           ".align 2; "                                  \
  29           "1: .word " #x "(gottpoff) + (. - 3b - 4); "  \
  30           "2: "                                         \
  31           : "=&r" (__result) : "r" (tp));               \
  32      __result; })
  33 #else
  34 #define TLS_IE(x)                                       \
  35   ({ int *__result;                                     \
  36      void *tp = __builtin_thread_pointer ();            \
  37      asm ("ldr %0, 1f; "                                \
  38           "3: ldr %0, [pc, %0];"                        \
  39           "add %0, %1, %0; "                            \
  40           "b 2f; "                                      \
  41           ".align 2; "                                  \
  42           "1: .word " #x "(gottpoff) + (. - 3b - 8); "  \
  43           "2: "                                         \
  44           : "=&r" (__result) : "r" (tp));               \
  45      __result; })
  46 #endif
  47
  48 #define TLS_LD(x)                                       \
  49   ({ char *__result;                                    \
  50      int __offset;                                      \
  51      extern void *__tls_get_addr (void *);              \
  52      asm ("ldr %0, 2f; "                                \
  53           "1: add %0, pc, %0; "                         \
  54           "b 3f; "                                      \
  55           ".align 2; "                                  \
  56           "2: .word " #x "(tlsldm) + (. - 1b - "ARM_PC_OFFSET"); "      \
  57           "3: "                                         \
  58           : "=r" (__result));                           \
  59      __result = (char *)__tls_get_addr (__result);      \
  60      asm ("ldr %0, 1f; "                                \
  61           "b 2f; "                                      \
  62           ".align 2; "                                  \
  63           "1: .word " #x "(tlsldo); "                   \
  64           "2: "                                         \
  65           : "=r" (__offset));                           \
  66      (int *) (__result + __offset); })
  67
  68 #define TLS_GD(x)                                       \
  69   ({ int *__result;                                     \
  70      extern void *__tls_get_addr (void *);              \
  71      asm ("ldr %0, 2f; "                                \
  72           "1: add %0, pc, %0; "                         \
  73           "b 3f; "                                      \
  74           ".align 2; "                                  \
  75           "2: .word " #x "(tlsgd) + (. - 1b - "ARM_PC_OFFSET"); "       \
  76           "3: "                                         \
  77           : "=r" (__result));                           \
  78      (int *)__tls_get_addr (__result); })