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Diffstat (limited to 'sysdeps/mips/tls-macros.h')
| -rw-r--r-- | sysdeps/mips/tls-macros.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/sysdeps/mips/tls-macros.h b/sysdeps/mips/tls-macros.h new file mode 100644 index 0000000000..3e87e42ea1 --- /dev/null +++ b/sysdeps/mips/tls-macros.h @@ -0,0 +1,123 @@ +/* Macros to support TLS testing in times of missing compiler support. */ + +#include <sys/cdefs.h> +#include <sys/asm.h> + +#define __STRING2(X) __STRING(X) +#define ADDU __STRING2(PTR_ADDU) +#define ADDIU __STRING2(PTR_ADDIU) +#define LW __STRING2(PTR_L) + +/* Load the GOT pointer, which may not be in $28 in a non-PIC + (abicalls pic0) function. */ +#ifndef __PIC__ +# if _MIPS_SIM != _ABI64 +# ifndef __mips16 +# define LOAD_GP "move %[tmp], $28\n\tla $28, __gnu_local_gp\n\t" +# else +# define LOAD_GP \ + "li %[tmp], %%hi(__gnu_local_gp)\n\t" \ + "sll %[tmp], 16\n\t" \ + "addiu %[tmp], %%lo(__gnu_local_gp)\n\t" +# endif +# else +# define LOAD_GP "move %[tmp], $28\n\tdla $28, __gnu_local_gp\n\t" +# endif +# define UNLOAD_GP "\n\tmove $28, %[tmp]" +#else +/* MIPS16 (re)creates the GP value using PC-relative instructions. */ +# ifdef __mips16 +# define LOAD_GP \ + "li %[tmp], %%hi(_gp_disp)\n\t" \ + "addiu %0, $pc, %%lo(_gp_disp)\n\t" \ + "sll %[tmp], 16\n\t" \ + "addu %[tmp], %0\n\t" +# else +# define LOAD_GP +# endif +# define UNLOAD_GP +#endif + +#ifndef __mips16 +# define TLS_GD(x) \ + ({ void *__result, *__tmp; \ + extern void *__tls_get_addr (void *); \ + asm (LOAD_GP ADDIU " %0, $28, %%tlsgd(" #x ")" \ + UNLOAD_GP \ + : "=r" (__result), [tmp] "=&r" (__tmp)); \ + (int *)__tls_get_addr (__result); }) +# define TLS_LD(x) \ + ({ void *__result, *__tmp; \ + extern void *__tls_get_addr (void *); \ + asm (LOAD_GP ADDIU " %0, $28, %%tlsldm(" #x ")" \ + UNLOAD_GP \ + : "=r" (__result), [tmp] "=&r" (__tmp)); \ + __result = __tls_get_addr (__result); \ + asm ("lui $3,%%dtprel_hi(" #x ")\n\t" \ + "addiu $3,$3,%%dtprel_lo(" #x ")\n\t" \ + ADDU " %0,%0,$3" \ + : "+r" (__result) : : "$3"); \ + __result; }) +# define TLS_IE(x) \ + ({ void *__result, *__tmp; \ + asm (".set push\n\t.set mips32r2\n\t" \ + "rdhwr\t%0,$29\n\t.set pop" \ + : "=v" (__result)); \ + asm (LOAD_GP LW " $3,%%gottprel(" #x ")($28)\n\t" \ + ADDU " %0,%0,$3" \ + UNLOAD_GP \ + : "+r" (__result), [tmp] "=&r" (__tmp) \ + : : "$3"); \ + __result; }) +# define TLS_LE(x) \ + ({ void *__result; \ + asm (".set push\n\t.set mips32r2\n\t" \ + "rdhwr\t%0,$29\n\t.set pop" \ + : "=v" (__result)); \ + asm ("lui $3,%%tprel_hi(" #x ")\n\t" \ + "addiu $3,$3,%%tprel_lo(" #x ")\n\t" \ + ADDU " %0,%0,$3" \ + : "+r" (__result) : : "$3"); \ + __result; }) + +#else /* __mips16 */ +/* MIPS16 version. */ +# define TLS_GD(x) \ + ({ void *__result, *__tmp; \ + extern void *__tls_get_addr (void *); \ + asm (LOAD_GP ADDIU " %1, %%tlsgd(" #x ")" \ + "\n\tmove %0, %1" \ + : "=d" (__result), [tmp] "=&d" (__tmp)); \ + (int *) __tls_get_addr (__result); }) +# define TLS_LD(x) \ + ({ void *__result, *__tmp; \ + extern void *__tls_get_addr (void *); \ + asm (LOAD_GP ADDIU " %1, %%tlsldm(" #x ")" \ + "\n\tmove %0, %1" \ + : "=d" (__result), [tmp] "=&d" (__tmp)); \ + __result = __tls_get_addr (__result); \ + asm ("li $3,%%dtprel_hi(" #x ")\n\t" \ + "sll $3,16\n\t" \ + "addiu $3,%%dtprel_lo(" #x ")\n\t" \ + ADDU " %0,%0,$3" \ + : "+d" (__result) : : "$3"); \ + __result; }) +# define TLS_IE(x) \ + ({ void *__result, *__tmp, *__tp; \ + __tp = __builtin_thread_pointer (); \ + asm (LOAD_GP LW " $3,%%gottprel(" #x ")(%1)\n\t" \ + ADDU " %0,%[tp],$3" \ + : "=&d" (__result), [tmp] "=&d" (__tmp) \ + : [tp] "d" (__tp) : "$3"); \ + __result; }) +# define TLS_LE(x) \ + ({ void *__result, *__tp; \ + __tp = __builtin_thread_pointer (); \ + asm ("li $3,%%tprel_hi(" #x ")\n\t" \ + "sll $3,16\n\t" \ + "addiu $3,%%tprel_lo(" #x ")\n\t" \ + ADDU " %0,%[tp],$3" \ + : "=d" (__result) : [tp] "d" (__tp) : "$3"); \ + __result; }) + +#endif /* __mips16 */ |