diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | elf/Makefile | 8 | ||||
| -rw-r--r-- | elf/tst-tls3.c | 69 | ||||
| -rw-r--r-- | elf/tst-tlsmod1.c | 63 | ||||
| -rw-r--r-- | sysdeps/i386/dl-machine.h | 19 |
5 files changed, 161 insertions, 6 deletions
@@ -1,5 +1,13 @@ 2002-02-10 Ulrich Drepper <drepper@redhat.com> + * elf/tst-tls3.c: New file. + * elf/tst-tlsmod1.c: New file. + * elf/Makefile: Add rules to build and run tst-tls3. + + * sysdeps/i386/dl-machine.h: Include <tls.h>. + (elf_machine_type_class): Set ELF_RTYPE_CLASS_PLT also for the three + TLS relocations. + * elf/do-lookup.h (FCT): st_value can be zero for STT_TLS symbols. * po/fr.po: Update from translation team. diff --git a/elf/Makefile b/elf/Makefile index 472dcfd..9c5d4f6 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -118,7 +118,8 @@ tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \ reldep reldep2 reldep3 reldep4 $(tests-nodelete-$(have-z-nodelete)) \ $(tests-nodlopen-$(have-z-nodlopen)) neededtest neededtest2 \ neededtest3 neededtest4 unload2 lateglobal initfirst global \ - restest2 next dblload dblunload reldep5 reldep6 tst-tls1 tst-tls2 + restest2 next dblload dblunload reldep5 reldep6 tst-tls1 tst-tls2 \ + tst-tls3 test-srcs = tst-pathopt tests-vis-yes = vismain tests-nodelete-yes = nodelete @@ -135,7 +136,8 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ neededobj5 neededobj6 firstobj globalmod1 \ unload2mod unload2dep ltglobmod1 ltglobmod2 pathoptobj \ dblloadmod1 dblloadmod2 dblloadmod3 reldepmod5 reldepmod6 \ - reldep6mod0 reldep6mod1 reldep6mod2 reldep6mod3 reldep6mod4 + reldep6mod0 reldep6mod1 reldep6mod2 reldep6mod3 reldep6mod4 \ + tst-tlsmod1 modules-vis-yes = vismod1 vismod2 vismod3 modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4 modules-nodlopen-yes = nodlopenmod nodlopenmod2 @@ -438,3 +440,5 @@ $(objpfx)reldep5.out: $(objpfx)reldepmod5.so $(objpfx)reldepmod5.so $(objpfx)reldep6: $(libdl) $(objpfx)reldep6.out: $(objpfx)reldep6mod3.so $(objpfx)reldep6mod4.so + +$(objpfx)tst-tls3: $(objpfx)tst-tlsmod1.so diff --git a/elf/tst-tls3.c b/elf/tst-tls3.c new file mode 100644 index 0000000..c86f184 --- /dev/null +++ b/elf/tst-tls3.c @@ -0,0 +1,69 @@ +/* glibc test for TLS in ld.so. */ +#include <stdio.h> + +#include <tls.h> +#include "tls-macros.h" + + +/* One define int variable, two externs. */ +COMMON_INT_DECL(foo); +VAR_INT_DECL(bar); +VAR_INT_DEF(baz); + + +extern int in_dso (void); + + +int +main (void) +{ +#ifdef USE_TLS + int result = 0; + int *ap, *bp, *cp; + + + /* Set the variable using the local exec model. */ + puts ("set baz to 3 (LE)"); + ap = TLS_LE (baz); + *ap = 3; + + + /* Get variables using initial exec model. */ + puts ("set variables foo and bar (IE)"); + ap = TLS_IE (foo); + *ap = 1; + bp = TLS_IE (bar); + *bp = 2; + + + /* Get variables using local dynamic model. */ + fputs ("get sum of foo, bar (GD) and baz (LD)", stdout); + ap = TLS_GD (foo); + bp = TLS_GD (bar); + cp = TLS_LD (baz); + printf (" = %d\n", *ap + *bp + *cp); + result |= *ap + *bp + *cp != 6; + if (*ap != 1) + { + printf ("foo = %d\n", *ap); + result = 1; + } + if (*bp != 2) + { + printf ("bar = %d\n", *bp); + result = 1; + } + if (*cp != 3) + { + printf ("baz = %d\n", *cp); + result = 1; + } + + + result |= in_dso (); + + return result; +#else + return 0; +#endif +} diff --git a/elf/tst-tlsmod1.c b/elf/tst-tlsmod1.c new file mode 100644 index 0000000..3a63286 --- /dev/null +++ b/elf/tst-tlsmod1.c @@ -0,0 +1,63 @@ +#include <stdio.h> + +#include <tls.h> +#include "tls-macros.h" + + +/* One define int variable, two externs. */ +COMMON_INT_DEF(foo); +VAR_INT_DEF(bar); +VAR_INT_DECL(baz); + + +int +in_dso (void) +{ + int result = 0; +#ifdef USE_TLS + int *ap, *bp, *cp; + + /* Get variables using initial exec model. */ + fputs ("get sum of foo and bar (IE)", stdout); + ap = TLS_IE (foo); + bp = TLS_IE (bar); + printf (" = %d\n", *ap + *bp); + result |= *ap + *bp != 3; + if (*ap != 1) + { + printf ("foo = %d\n", *ap); + result = 1; + } + if (*bp != 2) + { + printf ("bar = %d\n", *bp); + result = 1; + } + + + /* Get variables using generic dynamic model. */ + fputs ("get sum of foo and bar and baz (GD)", stdout); + ap = TLS_GD (foo); + bp = TLS_GD (bar); + cp = TLS_GD (baz); + printf (" = %d\n", *ap + *bp + *cp); + result |= *ap + *bp + *cp != 6; + if (*ap != 1) + { + printf ("foo = %d\n", *ap); + result = 1; + } + if (*bp != 2) + { + printf ("bar = %d\n", *bp); + result = 1; + } + if (*cp != 3) + { + printf ("baz = %d\n", *cp); + result = 1; + } +#endif + + return result; +} diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h index 3e47180..9ae18a4 100644 --- a/sysdeps/i386/dl-machine.h +++ b/sysdeps/i386/dl-machine.h @@ -24,6 +24,8 @@ #include <sys/param.h> +#include <tls.h> + /* Return nonzero iff ELF header is compatible with the running host. */ static inline int __attribute__ ((unused)) elf_machine_matches_host (const Elf32_Ehdr *ehdr) @@ -255,13 +257,22 @@ _dl_start_user:\n\ # define RTLD_START_SPECIAL_INIT /* nothing */ #endif -/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so - PLT entries should not be allowed to define the value. +/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or + TLS variable, so undefined references should not be allowed to + define the value. ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one of the main executable's symbols, as for a COPY reloc. */ -#define elf_machine_type_class(type) \ - ((((type) == R_386_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \ +#ifdef USE_TLS +# define elf_machine_type_class(type) \ + ((((type) == R_386_JMP_SLOT || (type) == R_386_TLS_DTPMOD32 \ + || (type) == R_386_TLS_DTPOFF32 || (type) == R_386_TLS_TPOFF32) \ + * ELF_RTYPE_CLASS_PLT) \ | (((type) == R_386_COPY) * ELF_RTYPE_CLASS_COPY)) +#else +# define elf_machine_type_class(type) \ + ((((type) == R_386_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \ + | (((type) == R_386_COPY) * ELF_RTYPE_CLASS_COPY)) +#endif /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_386_JMP_SLOT |