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uclibc-ng
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test
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tls
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tls-macros-mips.h

tls-macros-mips.h 2.0 KB
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  1. /* Macros to support TLS testing in times of missing compiler support.  */
    2. 

  2. 

  3. #include <sys/cdefs.h>
    4. 

  4. #include <sys/asm.h>
    5. 

  5. 

  6. #define __STRING2(X) __STRING(X)
    7. 

  7. #define ADDU __STRING2(PTR_ADDU)
    8. 

  8. #define ADDIU __STRING2(PTR_ADDIU)
    9. 

  9. #define LW __STRING2(PTR_L)
    10. 

  10. 

  11. /* Load the GOT pointer, which may not be in $28 in a non-PIC
    12. 

  12.    (abicalls pic0) function.  */
    13. 

  13. #ifndef __PIC__
    14. 

  14. # if _MIPS_SIM != _ABI64
    15. 

  15. #  define LOAD_GP "move %[tmp], $28\n\tla $28, __gnu_local_gp\n\t"
    16. 

  16. # else
    17. 

  17. #  define LOAD_GP "move %[tmp], $28\n\tdla $28, __gnu_local_gp\n\t"
    18. 

  18. # endif
    19. 

  19. # define UNLOAD_GP "\n\tmove $28, %[tmp]"
    20. 

  20. #else
    21. 

  21. # define LOAD_GP
    22. 

  22. # define UNLOAD_GP
    23. 

  23. #endif
    24. 

  24. 

  25. # define TLS_GD(x)					\
    26. 

  26.   ({ void *__result, *__tmp;				\
    27. 

  27.      extern void *__tls_get_addr (void *);		\
    28. 

  28.      __asm__ (LOAD_GP ADDIU " %0, $28, %%tlsgd(" #x ")"	\
    29. 

  29. 	  UNLOAD_GP					\
    30. 

  30. 	  : "=r" (__result), [tmp] "=&r" (__tmp));	\
    31. 

  31.      (int *)__tls_get_addr (__result); })
    32. 

  32. # define TLS_LD(x)					\
    33. 

  33.   ({ void *__result, *__tmp;				\
    34. 

  34.      extern void *__tls_get_addr (void *);		\
    35. 

  35.      __asm__ (LOAD_GP ADDIU " %0, $28, %%tlsldm(" #x ")"	\
    36. 

  36. 	  UNLOAD_GP					\
    37. 

  37. 	  : "=r" (__result), [tmp] "=&r" (__tmp));	\
    38. 

  38.      __result = __tls_get_addr (__result);		\
    39. 

  39.      __asm__ ("lui $3,%%dtprel_hi(" #x ")\n\t"		\
    40. 

  40. 	  "addiu $3,$3,%%dtprel_lo(" #x ")\n\t"		\
    41. 

  41. 	  ADDU " %0,%0,$3"				\
    42. 

  42. 	  : "+r" (__result) : : "$3");			\
    43. 

  43.      __result; })
    44. 

  44. # define TLS_IE(x)					\
    45. 

  45.   ({ void *__result, *__tmp;				\
    46. 

  46.      __asm__ (".set push\n\t.set mips32r2\n\t"		\
    47. 

  47. 	  "rdhwr\t%0,$29\n\t.set pop"			\
    48. 

  48. 	  : "=v" (__result));				\
    49. 

  49.      __asm__ (LOAD_GP LW " $3,%%gottprel(" #x ")($28)\n\t"	\
    50. 

  50. 	  ADDU " %0,%0,$3"				\
    51. 

  51. 	  UNLOAD_GP					\
    52. 

  52. 	  : "+r" (__result), [tmp] "=&r" (__tmp)	\
    53. 

  53. 	  : : "$3");					\
    54. 

  54.      __result; })
    55. 

  55. # define TLS_LE(x)					\
    56. 

  56.   ({ void *__result;					\
    57. 

  57.      __asm__ (".set push\n\t.set mips32r2\n\t"		\
    58. 

  58. 	  "rdhwr\t%0,$29\n\t.set pop"			\
    59. 

  59. 	  : "=v" (__result));				\
    60. 

  60.      __asm__ ("lui $3,%%tprel_hi(" #x ")\n\t"		\
    61. 

  61. 	  "addiu $3,$3,%%tprel_lo(" #x ")\n\t"		\
    62. 

  62. 	  ADDU " %0,%0,$3"				\
    63. 

  63. 	  : "+r" (__result) : : "$3");			\
    64. 

  64.      __result; })
    65.