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authorRoland McGrath <roland@gnu.org>2002-09-29 10:38:40 +0000
committerRoland McGrath <roland@gnu.org>2002-09-29 10:38:40 +0000
commit5bbfc1ea7069630149c5fc1b3cec4a044d43a9cd (patch)
treee7839a54415204305359b7835c6be050c283a197 /sysdeps/x86_64
parent3c25964fb000ed7f6bd4ec30d02b3819c581b4b3 (diff)
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* configure: Regenerated after aclocal.m4 change.
* sysdeps/x86_64/sysdep.h [HAVE_ELF] (L): Define with .L##name form. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (L): Don't define it here. * sysdeps/generic/dl-lookupcfg.h [USE_TLS] (DL_LOOKUP_RETURNS_MAP): Define it, because _dl_sym presumes it (for any platform). * sysdeps/x86_64/dl-tls.h: New file. * sysdeps/x86_64/dl-machine.h (elf_machine_rela): Add a cast. * sysdeps/x86_64/elf/configure.in: New file. * sysdeps/x86_64/elf/configure: New generated file.
Diffstat (limited to 'sysdeps/x86_64')
-rw-r--r--sysdeps/x86_64/dl-machine.h3
-rw-r--r--sysdeps/x86_64/dl-tls.h29
-rwxr-xr-xsysdeps/x86_64/elf/configure43
-rw-r--r--sysdeps/x86_64/elf/configure.in35
-rw-r--r--sysdeps/x86_64/sysdep.h7
5 files changed, 115 insertions, 2 deletions
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index b55523649b..21459b9ab5 100644
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -378,7 +378,8 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
#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;
+ Elf64_Addr value = (sym == NULL ? 0
+ : (Elf64_Addr) sym_map->l_addr + sym->st_value);
#else
Elf64_Addr value = RESOLVE (&sym, version, r_type);
diff --git a/sysdeps/x86_64/dl-tls.h b/sysdeps/x86_64/dl-tls.h
new file mode 100644
index 0000000000..3e4768dc1f
--- /dev/null
+++ b/sysdeps/x86_64/dl-tls.h
@@ -0,0 +1,29 @@
+/* Thread-local storage handling in the ELF dynamic linker. x86-64 version.
+ Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+
+/* Type used for the representation of TLS information in the GOT. */
+typedef struct
+{
+ unsigned long int ti_module;
+ unsigned long int ti_offset;
+} tls_index;
+
+
+extern void *__tls_get_addr (tls_index *ti);
diff --git a/sysdeps/x86_64/elf/configure b/sysdeps/x86_64/elf/configure
new file mode 100755
index 0000000000..466ccd1b1b
--- /dev/null
+++ b/sysdeps/x86_64/elf/configure
@@ -0,0 +1,43 @@
+ # Local configure fragment for sysdeps/x86_64/elf.
+
+if test "$usetls" != no; then
+# Check for support of thread-local storage handling in assembler and linker.
+echo $ac_n "checking for x86-64 TLS support""... $ac_c" 1>&6
+echo "configure:7: checking for x86-64 TLS support" >&5
+if eval "test \"`echo '$''{'libc_cv_x86_64_tls'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.s <<\EOF
+ .section ".tdata", "awT", @progbits
+ .globl foo
+foo: .quad 1
+ .section ".tbss", "awT", @nobits
+ .globl bar
+bar: .skip 8
+ .text
+baz: leaq bar@TLSLD(%rip), %rdi
+ leaq bar@DTPOFF(%rax), %rcx
+ addq foo@GOTTPOFF(%rip), %rax
+ movq $bar@TPOFF, %rdx
+EOF
+if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:24: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+ libc_cv_x86_64_tls=yes
+else
+ libc_cv_x86_64_tls=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$libc_cv_x86_64_tls" 1>&6
+if test $libc_cv_x86_64_tls = yes; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_TLS_SUPPORT 1
+EOF
+
+fi
+fi
+
+cat >> confdefs.h <<\EOF
+#define PI_STATIC_AND_HIDDEN 1
+EOF
+
diff --git a/sysdeps/x86_64/elf/configure.in b/sysdeps/x86_64/elf/configure.in
new file mode 100644
index 0000000000..7679a09b76
--- /dev/null
+++ b/sysdeps/x86_64/elf/configure.in
@@ -0,0 +1,35 @@
+sinclude(./aclocal.m4)dnl Autoconf lossage
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/x86_64/elf.
+
+if test "$usetls" != no; then
+# Check for support of thread-local storage handling in assembler and linker.
+AC_CACHE_CHECK(for x86-64 TLS support, libc_cv_x86_64_tls, [dnl
+cat > conftest.s <<\EOF
+ .section ".tdata", "awT", @progbits
+ .globl foo
+foo: .quad 1
+ .section ".tbss", "awT", @nobits
+ .globl bar
+bar: .skip 8
+ .text
+baz: leaq bar@TLSLD(%rip), %rdi
+ leaq bar@DTPOFF(%rax), %rcx
+ addq foo@GOTTPOFF(%rip), %rax
+ movq $bar@TPOFF, %rdx
+EOF
+dnl
+if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
+ libc_cv_x86_64_tls=yes
+else
+ libc_cv_x86_64_tls=no
+fi
+rm -f conftest*])
+if test $libc_cv_x86_64_tls = yes; then
+ AC_DEFINE(HAVE_TLS_SUPPORT)
+fi
+fi
+
+dnl It is always possible to access static and hidden symbols in an
+dnl position independent way.
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h
index a9c0d25f11..1aa60fea8e 100644
--- a/sysdeps/x86_64/sysdep.h
+++ b/sysdeps/x86_64/sysdep.h
@@ -94,7 +94,12 @@ lose: \
/* Local label name for asm code. */
#ifndef L
-#define L(name) name
+# ifdef HAVE_ELF
+/* ELF-like local names start with `.L'. */
+# define L(name) .L##name
+# else
+# define L(name) name
+# endif
#endif
#endif /* __ASSEMBLER__ */