From e98c925fa4f6486447eb20676755dbf9eb36a110 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Thu, 3 Aug 2017 15:39:21 +0930 Subject: tst-tlsopt-powerpc as a shared lib This makes the __tls_get_addr_opt test run as a shared library, and so actually test that DTPMOD64/DTPREL64 pairs are processed by ld.so to support the __tls_get_adfr_opt call stub fast return. After a 2017-01-24 patch (binutils f0158f4416) ld.bfd no longer emitted unnecessary dynamic relocations against local thread variables, instead setting up the __tls_index GOT entries for the call stub fast return. This meant tst-tlsopt-powerpc passed but did not check ld.so relocation support. After a 2017-07-16 patch (binutils 676ee2b5fa) ld.bfd no longer set up the __tls_index GOT entries for the call stub fast return, and tst-tlsopt-powerpc failed. Compiling mod-tlsopt-powerpc.c with -DSHARED exposed a bug in powerpc64/tls-macros.h, which defines a __TLS_GET_ADDR macro that clashes with one defined in dl-tls.h. The tls-macros.h version is only used in that file, so delete it and expand. * sysdeps/powerpc/mod-tlsopt-powerpc.c: Extract from tst-tlsopt-powerpc.c with function name change and no test harness. * sysdeps/powerpc/tst-tlsopt-powerpc.c: Remove body of test. Call tls_get_addr_opt_test. * sysdeps/powerpc/Makefile (LDFLAGS-tst-tlsopt-powerpc): Don't define. (modules-names): Add mod-tlsopt-powerpc. (mod-tlsopt-powerpc.so-no-z-defs): Define. (tst-tlsopt-powerpc): Depend on .so. * sysdeps/powerpc/powerpc64/tls-macros.h (__TLS_GET_ADDR): Don't define. Expand use in TLS_GD and TLS_LD. --- sysdeps/powerpc/tst-tlsopt-powerpc.c | 44 ++---------------------------------- 1 file changed, 2 insertions(+), 42 deletions(-) (limited to 'sysdeps/powerpc/tst-tlsopt-powerpc.c') diff --git a/sysdeps/powerpc/tst-tlsopt-powerpc.c b/sysdeps/powerpc/tst-tlsopt-powerpc.c index 8ae928a3f4..cc682b2ed0 100644 --- a/sysdeps/powerpc/tst-tlsopt-powerpc.c +++ b/sysdeps/powerpc/tst-tlsopt-powerpc.c @@ -1,51 +1,11 @@ /* glibc test for __tls_get_addr optimization. */ -#include - -#include "../../elf/tls-macros.h" -#include "dl-tls.h" - -/* common 'int' variable in TLS. */ -COMMON_INT_DEF(foo); - static int do_test (void) { - int result = 0; - - /* Get variable using general dynamic model. */ - int *ap = TLS_GD (foo); - if (*ap != 0) - { - printf ("foo = %d\n", *ap); - result = 1; - } - - tls_index *tls_arg; -#ifdef __powerpc64__ - register unsigned long thread_pointer __asm__ ("r13"); - asm ("addi %0,2,foo@got@tlsgd" : "=r" (tls_arg)); -#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; - } + extern int tls_get_addr_opt_test (void); - return result; + return tls_get_addr_opt_test (); } #include -- cgit 1.4.1