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Diffstat (limited to 'sysdeps/s390/s390-32/dl-machine.h')
-rw-r--r--sysdeps/s390/s390-32/dl-machine.h92
1 files changed, 83 insertions, 9 deletions
diff --git a/sysdeps/s390/s390-32/dl-machine.h b/sysdeps/s390/s390-32/dl-machine.h
index 557c04e4ea..6905814c41 100644
--- a/sysdeps/s390/s390-32/dl-machine.h
+++ b/sysdeps/s390/s390-32/dl-machine.h
@@ -1,5 +1,5 @@
/* Machine-dependent ELF dynamic relocation inline functions. S390 Version.
- Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by Carl Pederson & Martin Schwidefsky.
This file is part of the GNU C Library.
@@ -312,13 +312,22 @@ _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) \
+#ifdef USE_TLS
+# define elf_machine_type_class(type) \
+ ((((type) == R_390_JMP_SLOT || (type) == R_390_TLS_DTPMOD \
+ || (type) == R_390_TLS_DTPOFF || (type) == R_390_TLS_TPOFF) \
+ * ELF_RTYPE_CLASS_PLT) \
+ | (((type) == R_390_COPY) * ELF_RTYPE_CLASS_COPY))
+#else
+# define elf_machine_type_class(type) \
((((type) == R_390_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \
| (((type) == R_390_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_390_JMP_SLOT
@@ -372,25 +381,90 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
{
const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
+#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
if (__builtin_expect (r_type == R_390_RELATIVE, 0))
- *reloc_addr = map->l_addr + reloc->r_addend;
-#ifndef RTLD_BOOTSTRAP
- else if (__builtin_expect (r_type == R_390_NONE, 0))
- return;
+ {
+# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
+ /* This is defined in rtld.c, but nowhere in the static libc.a;
+ make the reference weak so static programs can still link.
+ This declaration cannot be done when compiling rtld.c
+ (i.e. #ifdef RTLD_BOOTSTRAP) because rtld.c contains the
+ common defn for _dl_rtld_map, which is incompatible with a
+ weak decl in the same file. */
+# ifndef SHARED
+ weak_extern (GL(dl_rtld_map));
+# endif
+ if (map != &GL(dl_rtld_map)) /* Already done in rtld itself. */
+# endif
+ *reloc_addr = map->l_addr + reloc->r_addend;
+ }
+ else
#endif
+ if (__builtin_expect (r_type == R_390_NONE, 0))
+ return;
else
{
const Elf32_Sym *const refsym = sym;
+#if defined USE_TLS && !defined RTLD_BOOTSTRAP
+ struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
+ Elf32_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
+#else
Elf32_Addr value = RESOLVE (&sym, version, r_type);
+
+# ifndef RTLD_BOOTSTRAP
if (sym)
+# endif
value += sym->st_value;
+#endif /* use TLS and !RTLD_BOOTSTRAP */
switch (r_type)
{
case R_390_GLOB_DAT:
case R_390_JMP_SLOT:
- *reloc_addr = value;
+ *reloc_addr = value + reloc->r_addend;
+ break;
+
+#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD)
+ case R_390_TLS_DTPMOD:
+# ifdef RTLD_BOOTSTRAP
+ /* During startup the dynamic linker is always the module
+ with index 1.
+ XXX If this relocation is necessary move before RESOLVE
+ call. */
+ *reloc_addr = 1;
+# else
+ /* Get the information from the link map returned by the
+ resolv function. */
+ if (sym_map != NULL)
+ *reloc_addr = sym_map->l_tls_modid;
+# endif
+ break;
+ case R_390_TLS_DTPOFF:
+# ifndef RTLD_BOOTSTRAP
+ /* During relocation all TLS symbols are defined and used.
+ Therefore the offset is already correct. */
+ if (sym != NULL)
+ *reloc_addr = sym->st_value + reloc->r_addend;
+# endif
break;
+ case R_390_TLS_TPOFF:
+ /* The offset is negative, forward from the thread pointer. */
+# ifdef RTLD_BOOTSTRAP
+ *reloc_addr = sym->st_value + reloc->r_addend - map->l_tls_offset;
+# else
+ /* We know the offset of the object the symbol is contained in.
+ It is a negative value which will be added to the
+ thread pointer. */
+ if (sym != NULL)
+ {
+ CHECK_STATIC_TLS (map, sym_map);
+ *reloc_addr = (sym->st_value + reloc->r_addend
+ - sym_map->l_tls_offset);
+ }
+#endif
+ break;
+#endif /* use TLS */
+
#ifndef RTLD_BOOTSTRAP
case R_390_COPY:
if (sym == NULL)