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94628de778
Supports pcrel addressing of TLS GOT entry. Also tweak the non-pcrel asm constraint to better reflect how the reg is used.
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* shared library to test for __tls_get_addr optimization. */
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#include <stdio.h>
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#include "dl-tls.h"
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__thread int foo __attribute__ ((tls_model("global-dynamic")));
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int
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tls_get_addr_opt_test (void)
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{
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int result = 0;
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/* Get variable using general dynamic model. */
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int *ap = &foo;
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if (*ap != 0)
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{
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printf ("foo = %d\n", *ap);
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result = 1;
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}
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tls_index *tls_arg;
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#ifdef __powerpc64__
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register unsigned long thread_pointer __asm__ ("r13");
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# ifdef __PCREL__
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asm ("paddi %0,0,foo@got@tlsgd@pcrel,1" : "=b" (tls_arg));
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# else
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asm ("addi %0,2,foo@got@tlsgd" : "=b" (tls_arg));
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# endif
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#else
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register unsigned long thread_pointer __asm__ ("r2");
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asm ("bcl 20,31,1f\n1:\t"
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"mflr %0\n\t"
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"addis %0,%0,_GLOBAL_OFFSET_TABLE_-1b@ha\n\t"
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"addi %0,%0,_GLOBAL_OFFSET_TABLE_-1b@l\n\t"
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"addi %0,%0,foo@got@tlsgd" : "=b" (tls_arg));
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#endif
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if (tls_arg->ti_module != 0)
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{
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printf ("tls_index not optimized, binutils too old?\n");
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result = 1;
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}
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else if (tls_arg->ti_offset + thread_pointer != (unsigned long) ap)
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{
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printf ("tls_index->ti_offset wrong value\n");
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result = 1;
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}
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return result;
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}
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