[PATCH] libunwind: update to 1.4.0
Rosen Penev
rosenp at gmail.com
Tue Jul 21 22:41:50 EDT 2020
Cleanup Makefile for consistency with other ones.
Remove PKG_SSP. It can be fixed with -lssp_nonshared.
Add PKG_BUILD_PARALLEL for faster compilation.
Add some alpine pathes to fix potential issues.
Backport GCC 10 patch to fix compilation.
Signed-off-by: Rosen Penev <rosenp at gmail.com>
---
package/libs/libunwind/Makefile | 15 +-
...03-fix-missing-ef_reg-defs-with-musl.patch | 2 +-
.../patches/005-aarch64-sigset_t.patch | 21 +
.../patches/006-fix-libunwind-pc-in.patch | 10 +
.../libs/libunwind/patches/010-gcc10.patch | 442 ++++++++++++++++++
5 files changed, 482 insertions(+), 8 deletions(-)
create mode 100644 package/libs/libunwind/patches/005-aarch64-sigset_t.patch
create mode 100644 package/libs/libunwind/patches/006-fix-libunwind-pc-in.patch
create mode 100644 package/libs/libunwind/patches/010-gcc10.patch
diff --git a/package/libs/libunwind/Makefile b/package/libs/libunwind/Makefile
index 994ee97a17..b07bf9dfaa 100644
--- a/package/libs/libunwind/Makefile
+++ b/package/libs/libunwind/Makefile
@@ -9,22 +9,22 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=libunwind
-PKG_VERSION:=1.3.1
+PKG_VERSION:=1.4.0
PKG_RELEASE:=1
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=@SAVANNAH/$(PKG_NAME)
-PKG_HASH:=43997a3939b6ccdf2f669b50fdb8a4d3205374728c2923ddc2354c65260214f8
-PKG_FIXUP:=autoreconf
-PKG_INSTALL:=1
+PKG_HASH:=df59c931bd4d7ebfd83ee481c943edf015138089b8e50abed8d9c57ba9338435
+PKG_MAINTAINER:=Yousong Zhou <yszhou4tech at gmail.com>
PKG_LICENSE:=X11
PKG_LICENSE_FILES:=LICENSE
PKG_CPE_ID:=cpe:/a:libunwind_project:libunwind
-PKG_MAINTAINER:=Yousong Zhou <yszhou4tech at gmail.com>
+PKG_FIXUP:=autoreconf
+PKG_INSTALL:=1
+PKG_BUILD_PARALLEL:=1
-PKG_SSP:=0
include $(INCLUDE_DIR)/package.mk
define Package/libunwind
@@ -43,8 +43,9 @@ endef
CONFIGURE_ARGS += \
--disable-documentation \
--disable-tests \
- --enable-minidebuginfo=no \
+ --disable-minidebuginfo
+TARGET_LDFLAGS += $(if $(CONFIG_USE_MUSL),-lssp_nonshared)
define Package/libunwind/install
$(INSTALL_DIR) $(1)/usr/lib
diff --git a/package/libs/libunwind/patches/003-fix-missing-ef_reg-defs-with-musl.patch b/package/libs/libunwind/patches/003-fix-missing-ef_reg-defs-with-musl.patch
index 465abb4ce0..479004a27e 100644
--- a/package/libs/libunwind/patches/003-fix-missing-ef_reg-defs-with-musl.patch
+++ b/package/libs/libunwind/patches/003-fix-missing-ef_reg-defs-with-musl.patch
@@ -1,7 +1,7 @@
diff -uprN a/include/libunwind-mips.h b/include/libunwind-mips.h
--- a/include/libunwind-mips.h 2012-10-06 12:54:38.000000000 +0800
+++ b/include/libunwind-mips.h 2016-06-08 13:55:55.029436442 +0800
-@@ -111,6 +111,42 @@ typedef enum
+@@ -114,6 +114,42 @@ typedef enum
}
mips_regnum_t;
diff --git a/package/libs/libunwind/patches/005-aarch64-sigset_t.patch b/package/libs/libunwind/patches/005-aarch64-sigset_t.patch
new file mode 100644
index 0000000000..7abc61c41a
--- /dev/null
+++ b/package/libs/libunwind/patches/005-aarch64-sigset_t.patch
@@ -0,0 +1,21 @@
+diff --git a/include/libunwind-aarch64.h b/include/libunwind-aarch64.h
+index 778b436..926fbbc 100644
+--- a/include/libunwind-aarch64.h
++++ b/include/libunwind-aarch64.h
+@@ -34,6 +34,7 @@ extern "C" {
+ #include <inttypes.h>
+ #include <stddef.h>
+ #include <ucontext.h>
++#include <signal.h>
+
+ #define UNW_TARGET aarch64
+ #define UNW_TARGET_AARCH64 1
+@@ -192,7 +193,7 @@ typedef struct
+ unsigned long uc_flags;
+ struct ucontext *uc_link;
+ stack_t uc_stack;
+- __sigset_t uc_sigmask;
++ sigset_t uc_sigmask;
+ struct unw_sigcontext uc_mcontext;
+ } unw_tdep_context_t;
+
diff --git a/package/libs/libunwind/patches/006-fix-libunwind-pc-in.patch b/package/libs/libunwind/patches/006-fix-libunwind-pc-in.patch
new file mode 100644
index 0000000000..ce93df4fad
--- /dev/null
+++ b/package/libs/libunwind/patches/006-fix-libunwind-pc-in.patch
@@ -0,0 +1,10 @@
+--- a/src/unwind/libunwind.pc.in
++++ b/src/unwind/libunwind.pc.in
+@@ -6,6 +6,6 @@
+ Name: libunwind
+ Description: libunwind base library
+ Version: @VERSION@
+-Libs: -L${libdir} -lunwind
++Libs: -L${libdir} -lunwind -lucontext
+ Libs.private: @LIBLZMA@
+ Cflags: -I${includedir}
diff --git a/package/libs/libunwind/patches/010-gcc10.patch b/package/libs/libunwind/patches/010-gcc10.patch
new file mode 100644
index 0000000000..8b4801c175
--- /dev/null
+++ b/package/libs/libunwind/patches/010-gcc10.patch
@@ -0,0 +1,442 @@
+From 29e17d8d2ccbca07c423e3089a6d5ae8a1c9cb6e Mon Sep 17 00:00:00 2001
+From: Yichao Yu <yyc1992 at gmail.com>
+Date: Tue, 31 Mar 2020 00:43:32 -0400
+Subject: [PATCH] Fix compilation with -fno-common.
+
+Making all other archs consistent with IA64 which should not have this problem.
+Also move the FIXME to the correct place.
+
+Also add some minimum comments about this...
+---
+ src/aarch64/Ginit.c | 15 +++++++--------
+ src/arm/Ginit.c | 15 +++++++--------
+ src/coredump/_UPT_get_dyn_info_list_addr.c | 5 +++++
+ src/hppa/Ginit.c | 15 +++++++--------
+ src/ia64/Ginit.c | 1 +
+ src/mi/Gfind_dynamic_proc_info.c | 1 +
+ src/mips/Ginit.c | 15 +++++++--------
+ src/ppc32/Ginit.c | 11 +++++++----
+ src/ppc64/Ginit.c | 11 +++++++----
+ src/ptrace/_UPT_get_dyn_info_list_addr.c | 5 +++++
+ src/s390x/Ginit.c | 15 +++++++--------
+ src/sh/Ginit.c | 15 +++++++--------
+ src/tilegx/Ginit.c | 15 +++++++--------
+ src/x86/Ginit.c | 15 +++++++--------
+ src/x86_64/Ginit.c | 15 +++++++--------
+ 15 files changed, 89 insertions(+), 80 deletions(-)
+
+diff --git a/src/aarch64/Ginit.c b/src/aarch64/Ginit.c
+index dec235c82..35389762f 100644
+--- a/src/aarch64/Ginit.c
++++ b/src/aarch64/Ginit.c
+@@ -61,13 +61,6 @@ tdep_uc_addr (unw_tdep_context_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -78,7 +71,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/arm/Ginit.c b/src/arm/Ginit.c
+index 2720d063a..0bac0d72d 100644
+--- a/src/arm/Ginit.c
++++ b/src/arm/Ginit.c
+@@ -57,18 +57,17 @@ tdep_uc_addr (unw_tdep_context_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/coredump/_UPT_get_dyn_info_list_addr.c b/src/coredump/_UPT_get_dyn_info_list_addr.c
+index 0d1190556..739ed0569 100644
+--- a/src/coredump/_UPT_get_dyn_info_list_addr.c
++++ b/src/coredump/_UPT_get_dyn_info_list_addr.c
+@@ -74,6 +74,11 @@ get_list_addr (unw_addr_space_t as, unw_word_t *dil_addr, void *arg,
+
+ #else
+
++/* XXX fix me: there is currently no way to locate the dyn-info list
++ by a remote unwinder. On ia64, this is done via a special
++ unwind-table entry. Perhaps something similar can be done with
++ DWARF2 unwind info. */
++
+ static inline int
+ get_list_addr (unw_addr_space_t as, unw_word_t *dil_addr, void *arg,
+ int *countp)
+diff --git a/src/hppa/Ginit.c b/src/hppa/Ginit.c
+index 461e4b93d..265455a68 100644
+--- a/src/hppa/Ginit.c
++++ b/src/hppa/Ginit.c
+@@ -64,13 +64,6 @@ _Uhppa_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -81,7 +74,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/ia64/Ginit.c b/src/ia64/Ginit.c
+index b09a2ad57..8601bb3ca 100644
+--- a/src/ia64/Ginit.c
++++ b/src/ia64/Ginit.c
+@@ -68,6 +68,7 @@ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ if (!_U_dyn_info_list_addr)
+ return -UNW_ENOINFO;
+ #endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
+ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+diff --git a/src/mi/Gfind_dynamic_proc_info.c b/src/mi/Gfind_dynamic_proc_info.c
+index 98d350128..2e7c62e5e 100644
+--- a/src/mi/Gfind_dynamic_proc_info.c
++++ b/src/mi/Gfind_dynamic_proc_info.c
+@@ -49,6 +49,7 @@ local_find_proc_info (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
+ return -UNW_ENOINFO;
+ #endif
+
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
+ list = (unw_dyn_info_list_t *) (uintptr_t) _U_dyn_info_list_addr ();
+ for (di = list->first; di; di = di->next)
+ if (ip >= di->start_ip && ip < di->end_ip)
+diff --git a/src/mips/Ginit.c b/src/mips/Ginit.c
+index 3df170c75..bf7a8f5a8 100644
+--- a/src/mips/Ginit.c
++++ b/src/mips/Ginit.c
+@@ -69,13 +69,6 @@ tdep_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -86,7 +79,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) (intptr_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/ppc32/Ginit.c b/src/ppc32/Ginit.c
+index ba302448a..7b4545580 100644
+--- a/src/ppc32/Ginit.c
++++ b/src/ppc32/Ginit.c
+@@ -96,9 +96,6 @@ tdep_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -109,7 +106,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/ppc64/Ginit.c b/src/ppc64/Ginit.c
+index 4c88cd6e7..7bfb395a7 100644
+--- a/src/ppc64/Ginit.c
++++ b/src/ppc64/Ginit.c
+@@ -95,9 +95,6 @@ tdep_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -108,7 +105,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/ptrace/_UPT_get_dyn_info_list_addr.c b/src/ptrace/_UPT_get_dyn_info_list_addr.c
+index cc5ed0441..16671d453 100644
+--- a/src/ptrace/_UPT_get_dyn_info_list_addr.c
++++ b/src/ptrace/_UPT_get_dyn_info_list_addr.c
+@@ -71,6 +71,11 @@ get_list_addr (unw_addr_space_t as, unw_word_t *dil_addr, void *arg,
+
+ #else
+
++/* XXX fix me: there is currently no way to locate the dyn-info list
++ by a remote unwinder. On ia64, this is done via a special
++ unwind-table entry. Perhaps something similar can be done with
++ DWARF2 unwind info. */
++
+ static inline int
+ get_list_addr (unw_addr_space_t as, unw_word_t *dil_addr, void *arg,
+ int *countp)
+diff --git a/src/s390x/Ginit.c b/src/s390x/Ginit.c
+index f0886ac93..db01743c0 100644
+--- a/src/s390x/Ginit.c
++++ b/src/s390x/Ginit.c
+@@ -50,8 +50,6 @@ static struct unw_addr_space local_addr_space;
+
+ unw_addr_space_t unw_local_addr_space = &local_addr_space;
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+ static inline void *
+ uc_addr (ucontext_t *uc, int reg)
+ {
+@@ -75,11 +73,6 @@ tdep_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -90,7 +83,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/sh/Ginit.c b/src/sh/Ginit.c
+index 52988a721..9fe96d2bd 100644
+--- a/src/sh/Ginit.c
++++ b/src/sh/Ginit.c
+@@ -58,13 +58,6 @@ tdep_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -75,7 +68,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/tilegx/Ginit.c b/src/tilegx/Ginit.c
+index 7564a558b..925e64132 100644
+--- a/src/tilegx/Ginit.c
++++ b/src/tilegx/Ginit.c
+@@ -64,13 +64,6 @@ tdep_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -81,7 +74,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) (intptr_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/x86/Ginit.c b/src/x86/Ginit.c
+index f6b8dc27d..3cec74a21 100644
+--- a/src/x86/Ginit.c
++++ b/src/x86/Ginit.c
+@@ -54,13 +54,6 @@ tdep_uc_addr (ucontext_t *uc, int reg)
+
+ # endif /* UNW_LOCAL_ONLY */
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -71,7 +64,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
+diff --git a/src/x86_64/Ginit.c b/src/x86_64/Ginit.c
+index a865d3385..fd8d418b1 100644
+--- a/src/x86_64/Ginit.c
++++ b/src/x86_64/Ginit.c
+@@ -49,13 +49,6 @@ static struct unw_addr_space local_addr_space;
+
+ unw_addr_space_t unw_local_addr_space = &local_addr_space;
+
+-HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
+-
+-/* XXX fix me: there is currently no way to locate the dyn-info list
+- by a remote unwinder. On ia64, this is done via a special
+- unwind-table entry. Perhaps something similar can be done with
+- DWARF2 unwind info. */
+-
+ static void
+ put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
+ {
+@@ -66,7 +59,13 @@ static int
+ get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
+ void *arg)
+ {
+- *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
++#ifndef UNW_LOCAL_ONLY
++# pragma weak _U_dyn_info_list_addr
++ if (!_U_dyn_info_list_addr)
++ return -UNW_ENOINFO;
++#endif
++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so.
++ *dyn_info_list_addr = _U_dyn_info_list_addr ();
+ return 0;
+ }
+
--
2.26.2
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