sysdeps/i386/tls-macros.h

   1 #include <features.h> /* For __GNUC_PREREQ.  */
   2
   3 #define TLS_LE(x) \
   4   ({ int *__l;                                                                \
   5      asm ("movl %%gs:0,%0\n\t"                                                \
   6           "subl $" #x "@tpoff,%0"                                             \
   7           : "=r" (__l));                                                      \
   8      __l; })
   9
  10 #if defined PIC && !__GNUC_PREREQ (5,0)
  11 # define TLS_IE(x) \
  12   ({ int *__l;                                                                \
  13      asm ("movl %%gs:0,%0\n\t"                                                \
  14           "subl " #x "@gottpoff(%%ebx),%0"                                    \
  15           : "=r" (__l));                                                      \
  16      __l; })
  17 #else
  18 # define TLS_IE(x) \
  19   ({ int *__l, __b;                                                           \
  20      asm ("call 1f\n\t"                                                       \
  21           ".subsection 1\n"                                                   \
  22           "1:\tmovl (%%esp), %%ebx\n\t"                                       \
  23           "ret\n\t"                                                           \
  24           ".previous\n\t"                                                     \
  25           "addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"                            \
  26           "movl %%gs:0,%0\n\t"                                                \
  27           "subl " #x "@gottpoff(%%ebx),%0"                                    \
  28           : "=r" (__l), "=&b" (__b));                                         \
  29      __l; })
  30 #endif
  31
  32 #if defined PIC && !__GNUC_PREREQ (5,0)
  33 # define TLS_LD(x) \
  34   ({ int *__l, __c, __d;                                                      \
  35      asm ("leal " #x "@tlsldm(%%ebx),%%eax\n\t"                               \
  36           "call ___tls_get_addr@plt\n\t"                                      \
  37           "leal " #x "@dtpoff(%%eax), %%eax"                                  \
  38           : "=a" (__l), "=&c" (__c), "=&d" (__d));                            \
  39      __l; })
  40 #else
  41 # define TLS_LD(x) \
  42   ({ int *__l, __b, __c, __d;                                                 \
  43      asm ("call 1f\n\t"                                                       \
  44           ".subsection 1\n"                                                   \
  45           "1:\tmovl (%%esp), %%ebx\n\t"                                       \
  46           "ret\n\t"                                                           \
  47           ".previous\n\t"                                                     \
  48           "addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"                            \
  49           "leal " #x "@tlsldm(%%ebx),%%eax\n\t"                               \
  50           "call ___tls_get_addr@plt\n\t"                                      \
  51           "leal " #x "@dtpoff(%%eax), %%eax"                                  \
  52           : "=a" (__l), "=&b" (__b), "=&c" (__c), "=&d" (__d));               \
  53      __l; })
  54 #endif
  55
  56 #if defined PIC && !__GNUC_PREREQ (5,0)
  57 # define TLS_GD(x) \
  58   ({ int *__l, __c, __d;                                                      \
  59      asm ("leal " #x "@tlsgd(%%ebx),%%eax\n\t"                                \
  60           "call ___tls_get_addr@plt\n\t"                                      \
  61           "nop"                                                               \
  62           : "=a" (__l), "=&c" (__c), "=&d" (__d));                            \
  63      __l; })
  64 #else
  65 # define TLS_GD(x) \
  66   ({ int *__l, __b, __c, __d;                                                 \
  67      asm ("call 1f\n\t"                                                       \
  68           ".subsection 1\n"                                                   \
  69           "1:\tmovl (%%esp), %%ebx\n\t"                                       \
  70           "ret\n\t"                                                           \
  71           ".previous\n\t"                                                     \
  72           "addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"                            \
  73           "leal " #x "@tlsgd(%%ebx),%%eax\n\t"                                \
  74           "call ___tls_get_addr@plt\n\t"                                      \
  75           "nop"                                                               \
  76           : "=a" (__l), "=&b" (__b), "=&c" (__c), "=&d" (__d));               \
  77      __l; })
  78 #endif