/* shared library to test for __tls_get_addr optimization. */ #include #include "dl-tls.h" __thread int foo __attribute__ ((tls_model("global-dynamic"))); int tls_get_addr_opt_test (void) { int result = 0; /* Get variable using general dynamic model. */ int *ap = &foo; if (*ap != 0) { printf ("foo = %d\n", *ap); result = 1; } tls_index *tls_arg; #ifdef __powerpc64__ register unsigned long thread_pointer __asm__ ("r13"); # ifdef __PCREL__ asm ("paddi %0,0,foo@got@tlsgd@pcrel,1" : "=b" (tls_arg)); # else asm ("addi %0,2,foo@got@tlsgd" : "=b" (tls_arg)); # endif #else register unsigned long thread_pointer __asm__ ("r2"); asm ("bcl 20,31,1f\n1:\t" "mflr %0\n\t" "addis %0,%0,_GLOBAL_OFFSET_TABLE_-1b@ha\n\t" "addi %0,%0,_GLOBAL_OFFSET_TABLE_-1b@l\n\t" "addi %0,%0,foo@got@tlsgd" : "=b" (tls_arg)); #endif if (tls_arg->ti_module != 0) { printf ("tls_index not optimized, binutils too old?\n"); result = 1; } else if (tls_arg->ti_offset + thread_pointer != (unsigned long) ap) { printf ("tls_index->ti_offset wrong value\n"); result = 1; } return result; }