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-rw-r--r--ChangeLog17
-rw-r--r--elf/dl-addr.c12
-rw-r--r--elf/elf.h17
-rw-r--r--sysdeps/x86_64/dl-machine.h65
4 files changed, 96 insertions, 15 deletions
diff --git a/ChangeLog b/ChangeLog
index c047785e60..f7e54f5a79 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,20 @@
+2002-09-27  Jakub Jelinek  <jakub@redhat.com>
+
+	* elf/dl-addr.c (_dl_addr): Set dli_fbase to l_map_start
+	unconditionally.  Set dli_fname to _dl_argv[0] only for main program.
+
+2002-09-27  Roland McGrath  <roland@redhat.com>
+
+	* elf/dl-addr.c (_dl_addr): Add a cast.
+
+	* sysdeps/x86_64/dl-machine.h (elf_machine_rela) [USE_TLS]: Handle new
+	TLS relocs R_X86_64_DTPMOD64, R_X86_64_DTPOFF64, and R_X86_64_TPOFF64.
+
+	* elf/elf.h (R_X86_64_DTPMOD64, R_X86_64_DTPOFF64, R_X86_64_TPOFF64,
+	R_X86_64_TLSGD, R_X86_64_TLSLD, R_X86_64_DTPOFF32,
+	R_x86_64_GOTTPOFF, R_X86_64_TPOFF32): New macros.
+	(R_X86_64_NUM): Update the value.
+
 2002-09-24  Jakub Jelinek  <jakub@redhat.com>
 
 	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_load_address): Don't
diff --git a/elf/dl-addr.c b/elf/dl-addr.c
index 66cec39eb4..e560c74ab5 100644
--- a/elf/dl-addr.c
+++ b/elf/dl-addr.c
@@ -60,14 +60,12 @@ _dl_addr (const void *address, Dl_info *info)
 
   /* Now we know what object the address lies in.  */
   info->dli_fname = match->l_name;
-  info->dli_fbase = (void *) match->l_addr;
+  info->dli_fbase = (void *) match->l_map_start;
 
   /* If this is the main program the information is incomplete.  */
-  if (__builtin_expect (info->dli_fbase == NULL, 0))
-    {
-      info->dli_fname = _dl_argv[0];
-      info->dli_fbase = (void *) match->l_map_start;
-    }
+  if (__builtin_expect (l->l_name[0], 'a') == '\0'
+      && l->l_type == lt_executable)
+    info->dli_fname = _dl_argv[0];
 
   symtab = (const void *) D_PTR (match, l_info[DT_SYMTAB]);
   strtab = (const void *) D_PTR (match, l_info[DT_STRTAB]);
@@ -81,7 +79,7 @@ _dl_addr (const void *address, Dl_info *info)
        dynamic symbol table and no hash table is present.  The ELF
        binary is ill-formed but what shall we do?  Use the beginning of
        the string table which generally follows the symbol table.  */
-    symtabend = strtab;
+    symtabend = (const ElfW(Sym) *) strtab;
 
   /* We assume that the string table follows the symbol table, because
      there is no way in ELF to know the size of the dynamic symbol table!!  */
diff --git a/elf/elf.h b/elf/elf.h
index b664c5d279..2d79be2f65 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -2294,7 +2294,7 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_X86_64_GLOB_DAT	6	/* Create GOT entry */
 #define R_X86_64_JUMP_SLOT	7	/* Create PLT entry */
 #define R_X86_64_RELATIVE	8	/* Adjust by program base */
-#define R_X86_64_GOTPCREL	9	/* 32 bit signed pc relative
+#define R_X86_64_GOTPCREL	9	/* 32 bit signed PC relative
 					   offset to GOT */
 #define R_X86_64_32		10	/* Direct 32 bit zero extended */
 #define R_X86_64_32S		11	/* Direct 32 bit sign extended */
@@ -2302,8 +2302,19 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_X86_64_PC16		13	/* 16 bit sign extended pc relative */
 #define R_X86_64_8		14	/* Direct 8 bit sign extended  */
 #define R_X86_64_PC8		15	/* 8 bit sign extended pc relative */
-
-#define R_X86_64_NUM		16
+#define R_X86_64_DTPMOD64	16	/* ID of module containing symbol */
+#define R_X86_64_DTPOFF64	17	/* Offset in module's TLS block */
+#define R_X86_64_TPOFF64	18	/* Offset in initial TLS block */
+#define R_X86_64_TLSGD		19	/* 32 bit signed PC relative offset
+					   to two GOT entries for GD symbol */
+#define R_X86_64_TLSLD		20	/* 32 bit signed PC relative offset
+					   to two GOT entries for LD symbol */
+#define R_X86_64_DTPOFF32	21	/* Offset in TLS block */
+#define r_x86_64_GOTTPOFF	22	/* 32 bit signed PC relative offset
+					   to GOT entry for IE symbol */
+#define R_X86_64_TPOFF32	23	/* Offset in initial TLS block */
+
+#define R_X86_64_NUM		24
 
 __END_DECLS
 
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index 2800a9e958..6179bba3f7 100644
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -283,13 +283,24 @@ _dl_start_user:\n\
 .previous\n\
 ");
 
-/* 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_X86_64_JUMP_SLOT) * ELF_RTYPE_CLASS_PLT)  \
+#ifdef USE_TLS
+# define elf_machine_type_class(type) \
+  ((((type) == R_X86_64_JUMP_SLOT
+     || (type) == R_X86_64_DTPMOD64
+     || (type) == R_X86_64_DTPOFF64 || (type) == R_X86_64_DTPOFF32
+     || (type) == R_X86_64_TPOFF64 || (type) == R_X86_64_TPOFF32)
+    * ELF_RTYPE_CLASS_PLT)  \
    | (((type) == R_X86_64_COPY) * ELF_RTYPE_CLASS_COPY))
+#else
+# define elf_machine_type_class(type) \
+  ((((type) == R_X86_64_JUMP_SLOT) * ELF_RTYPE_CLASS_PLT) \
+   | (((type) == R_X86_64_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_X86_64_JUMP_SLOT
@@ -366,14 +377,19 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 #ifndef RTLD_BOOTSTRAP
       const Elf64_Sym *const refsym = sym;
 #endif
+#if defined USE_TLS && !defined RTLD_BOOTSTRAP
+      struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
+      Elf64_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
+#else
       Elf64_Addr value = RESOLVE (&sym, version, r_type);
 
 # ifndef RTLD_BOOTSTRAP
       if (sym != NULL)
 # endif
 	value += sym->st_value;
+#endif
 
-#ifdef RTLD_BOOTSTRAP
+#if defined RTLD_BOOTSTRAP && !(USE_TLS && HAVE___THREAD)
       assert (r_type == R_X86_64_GLOB_DAT || r_type == R_X86_64_JUMP_SLOT);
       *reloc_addr = value + reloc->r_addend;
 #else
@@ -383,6 +399,44 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 	case R_X86_64_JUMP_SLOT:
 	  *reloc_addr = value + reloc->r_addend;
 	  break;
+
+#ifdef USE_TLS
+	case R_X86_64_DTPMOD64:
+# 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
+	     resolve function.  */
+	  if (sym_map != NULL)
+	    *reloc_addr = sym_map->l_tls_modid;
+# endif
+	  break;
+	case R_X86_64_DTPOFF64:
+# 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_X86_64_TPOFF64:
+	  /* The offset is negative, forward from the thread pointer.  */
+# ifndef RTLD_BOOTSTRAP
+	  if (sym != NULL)
+# endif
+	    /* 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.  */
+	    *reloc_addr = (sym->st_value + reloc->r_addend
+			   - sym_map->l_tls_offset);
+	  break;
+#endif	/* use TLS */
+
+#ifndef RTLD_BOOTSTRAP
 	case R_X86_64_64:
 	  *reloc_addr = value + reloc->r_addend;
 	  break;
@@ -439,6 +493,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 	default:
 	  _dl_reloc_bad_type (map, r_type, 0);
 	  break;
+#endif
 	}
 #endif
     }
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-08-05 15:47:17 +0000