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authorIgnacy Gawędzki <ignacy.gawedzki@green-communications.fr>2016-10-06 18:15:58 (GMT)
committerWaldemar Brodkorb <wbx@openadk.org>2016-11-29 07:39:15 (GMT)
commit43a336e63f16c639e0e6fefdd7404509159c07b1 (patch)
tree926cd30d04e72d76ed3b0d23084a71eeb9c13fac
parentb433e2d9fccb17f9a2807403c339a7004e3d4f1b (diff)
libpthread: Fix inclusion of unwind code.
Since librt and libpthread are now integrated into libc, including unwind-resume and unwind-forcedunwind implementations of unwind code makes no sense. Only unwind-forcedunwind is now included with functions hidden to avoid them overriding the ones from libgcc_s. * libpthread/nptl/sysdeps/generic/unwind-resume.h: New. Define generic PERSONALITY_PROTO and PERSONALITY_ARGS and set HAVE_ARCH_UNWIND_RESUME to 0. * libpthread/nptl/sysdeps/pthread/unwind-resume.c: Move... * libpthread/nptl/sysdeps/generic/unwind-resume.c: ... here. Include generic implementation of _Unwind_Resume on the condition that !HAVE_ARCH_UNWIND_RESUME. Make functions hidden to prevent them from overriding libgcc_s's ones. * libpthread/nptl/sysdeps/pthread/unwind-forcedunwind.c: Likewise. * libpthread/nptl/sysdeps/arm/unwind-resume.h: New. Define ARM-specific PERSONALITY_PROTO and PERSONALITY_ARGS and set HAVE_ARCH_UNWIND_RESUME to 1. * libpthread/nptl/sysdeps/arm/arm-unwind-resume.c, * libpthread/nptl/sysdeps/arm/pt-arm-unwind-resume.c, * libpthread/nptl/sysdeps/arm/rt-arm-unwind-resume.c: New. ARM-specific implementations of _Unwind_Resume resp. for libc, libpthread and librt. * libpthread/nptl/sysdeps/Makefile.commonarch: Remove both arm-unwind-resume and rt-arm-unwind-resume from libpthread_arch_CSRC. * libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c, * libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-resume.c: Remove. Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
-rw-r--r--libpthread/nptl/sysdeps/Makefile.commonarch1
-rw-r--r--libpthread/nptl/sysdeps/arm/arm-unwind-resume.c67
-rw-r--r--libpthread/nptl/sysdeps/arm/pt-arm-unwind-resume.c2
-rw-r--r--libpthread/nptl/sysdeps/arm/rt-arm-unwind-resume.c1
-rw-r--r--libpthread/nptl/sysdeps/arm/unwind-resume.h33
-rw-r--r--libpthread/nptl/sysdeps/generic/unwind-resume.c (renamed from libpthread/nptl/sysdeps/pthread/unwind-resume.c)51
-rw-r--r--libpthread/nptl/sysdeps/generic/unwind-resume.h33
-rw-r--r--libpthread/nptl/sysdeps/pthread/unwind-forcedunwind.c49
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c177
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-resume.c116
10 files changed, 178 insertions, 352 deletions
diff --git a/libpthread/nptl/sysdeps/Makefile.commonarch b/libpthread/nptl/sysdeps/Makefile.commonarch
index 7f531f5..c206ac9 100644
--- a/libpthread/nptl/sysdeps/Makefile.commonarch
+++ b/libpthread/nptl/sysdeps/Makefile.commonarch
@@ -18,6 +18,7 @@ endif
libpthread_arch_SSRC := $(filter-out librt-%,$(filter-out libc-%,$(notdir $(wildcard $(libpthread_arch_DIR)/*.S))))
libpthread_arch_CSRC := $(filter-out librt-%,$(filter-out libc-%,$(notdir $(wildcard $(libpthread_arch_DIR)/*.c))))
libpthread_arch_CSRC := $(filter-out gen_%,$(libpthread_arch_CSRC))
+libpthread_arch_CSRC := $(filter-out arm-unwind-resume.% rt-arm-unwind-resume.%,$(libpthread_arch_CSRC))
ifneq ($(TARGET_SUBARCH),)
libpthread_subarch_SSRC := $(notdir $(wildcard $(libpthread_subarch_DIR)/*.S))
diff --git a/libpthread/nptl/sysdeps/arm/arm-unwind-resume.c b/libpthread/nptl/sysdeps/arm/arm-unwind-resume.c
new file mode 100644
index 0000000..ae55582
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arm/arm-unwind-resume.c
@@ -0,0 +1,67 @@
+/* Copyright (C) 2003, 2005, 2010 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+ 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; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+/* It's vitally important that _Unwind_Resume not have a stack frame; the
+ ARM unwinder relies on register state at entrance. So we write this in
+ assembly. */
+
+#include <sysdep.h>
+
+__asm__ (
+" .globl _Unwind_Resume\n"
+" .hidden _Unwind_Resume\n"
+" .type _Unwind_Resume, %function\n"
+"_Unwind_Resume:\n"
+" " CFI_SECTIONS (.debug_frame) "\n"
+" " CFI_STARTPROC "\n"
+" stmfd sp!, {r4, r5, r6, lr}\n"
+" " CFI_ADJUST_CFA_OFFSET (16)" \n"
+" " CFI_REL_OFFSET (r4, 0) "\n"
+" " CFI_REL_OFFSET (r5, 4) "\n"
+" " CFI_REL_OFFSET (r6, 8) "\n"
+" " CFI_REL_OFFSET (lr, 12) "\n"
+" " CFI_REMEMBER_STATE "\n"
+" ldr r4, 1f\n"
+" ldr r5, 2f\n"
+"3: add r4, pc, r4\n"
+" ldr r3, [r4, r5]\n"
+" mov r6, r0\n"
+" cmp r3, #0\n"
+" beq 4f\n"
+"5: mov r0, r6\n"
+" ldmfd sp!, {r4, r5, r6, lr}\n"
+" " CFI_ADJUST_CFA_OFFSET (-16) "\n"
+" " CFI_RESTORE (r4) "\n"
+" " CFI_RESTORE (r5) "\n"
+" " CFI_RESTORE (r6) "\n"
+" " CFI_RESTORE (lr) "\n"
+" bx r3\n"
+" " CFI_RESTORE_STATE "\n"
+"4: bl __libgcc_s_init\n"
+" ldr r3, [r4, r5]\n"
+" b 5b\n"
+" " CFI_ENDPROC "\n"
+" .align 2\n"
+#ifdef __thumb2__
+"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 4\n"
+#else
+"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 8\n"
+#endif
+"2: .word __libgcc_s_resume(GOTOFF)\n"
+" .size _Unwind_Resume, .-_Unwind_Resume\n"
+);
diff --git a/libpthread/nptl/sysdeps/arm/pt-arm-unwind-resume.c b/libpthread/nptl/sysdeps/arm/pt-arm-unwind-resume.c
new file mode 100644
index 0000000..fd0cec4
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arm/pt-arm-unwind-resume.c
@@ -0,0 +1,2 @@
+__asm__ (".set __libgcc_s_init, pthread_cancel_init");
+#include <arm-unwind-resume.c>
diff --git a/libpthread/nptl/sysdeps/arm/rt-arm-unwind-resume.c b/libpthread/nptl/sysdeps/arm/rt-arm-unwind-resume.c
new file mode 100644
index 0000000..2641dc5
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arm/rt-arm-unwind-resume.c
@@ -0,0 +1 @@
+#include <arm-unwind-resume.c>
diff --git a/libpthread/nptl/sysdeps/arm/unwind-resume.h b/libpthread/nptl/sysdeps/arm/unwind-resume.h
new file mode 100644
index 0000000..736cc83
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arm/unwind-resume.h
@@ -0,0 +1,33 @@
+/* Definitions for unwind-resume.c. ARM (EABI) version.
+ Copyright (C) 2015-2016 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; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+/* The EABI personality routine has a different signature than the
+ canonical one. These macros tell sysdeps/gnu/unwind*.c how to
+ define __gcc_personality_v0. */
+#define PERSONALITY_PROTO \
+ (_Unwind_State state, \
+ struct _Unwind_Exception *ue_header, \
+ struct _Unwind_Context *context)
+#define PERSONALITY_ARGS \
+ (state, ue_header, context)
+
+/* It's vitally important that _Unwind_Resume not have a stack frame; the
+ ARM unwinder relies on register state at entrance. So we write this in
+ assembly (see arm-unwind-resume.S). This macro tells the generic code
+ not to provide the generic C definition. */
+#define HAVE_ARCH_UNWIND_RESUME 1
diff --git a/libpthread/nptl/sysdeps/pthread/unwind-resume.c b/libpthread/nptl/sysdeps/generic/unwind-resume.c
index 3c1ce07..cd9df9f 100644
--- a/libpthread/nptl/sysdeps/pthread/unwind-resume.c
+++ b/libpthread/nptl/sysdeps/generic/unwind-resume.c
@@ -21,60 +21,55 @@
#include <stdlib.h>
#include <unwind.h>
#include <libgcc_s.h>
+#include <unwind-resume.h>
#define __libc_dlopen(x) dlopen(x, (RTLD_LOCAL | RTLD_LAZY))
#define __libc_dlsym dlsym
#define __libc_dlclose dlclose
-static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
-static _Unwind_Reason_Code (*libgcc_s_personality)
- (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
- struct _Unwind_Context *);
+void (*__libgcc_s_resume) (struct _Unwind_Exception *exc)
+ attribute_hidden __attribute__ ((noreturn));
+
+static _Unwind_Reason_Code (*libgcc_s_personality) PERSONALITY_PROTO;
extern
void abort(void);
-static void
-init (void)
+void attribute_hidden __attribute__ ((cold))
+__libgcc_s_init(void)
{
void *resume, *personality;
void *handle;
- resume = personality = NULL;
- handle = dlopen (LIBGCC_S_SO, (RTLD_LOCAL | RTLD_LAZY));
+
+ handle = __libc_dlopen (LIBGCC_S_SO);
if (handle == NULL
- || (resume = dlsym (handle, "_Unwind_Resume")) == NULL
- || (personality = dlsym (handle, "__gcc_personality_v0")) == NULL)
+ || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL
+ || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL)
{
- printf (LIBGCC_S_SO " must be installed for pthread_cancel to work\n");
+ fprintf (stderr,
+ LIBGCC_S_SO " must be installed for pthread_cancel to work\n");
abort();
}
- libgcc_s_resume = resume;
+ __libgcc_s_resume = resume;
libgcc_s_personality = personality;
}
-void
+#if !HAVE_ARCH_UNWIND_RESUME
+void attribute_hidden
_Unwind_Resume (struct _Unwind_Exception *exc)
{
if (__builtin_expect (libgcc_s_resume == NULL, 0))
- init ();
- libgcc_s_resume (exc);
+ __libgcc_s_init ();
+ __libgcc_s_resume (exc);
}
+#endif
-_Unwind_Reason_Code
-__gcc_personality_v0 (int version, _Unwind_Action actions,
- _Unwind_Exception_Class exception_class,
- struct _Unwind_Exception *ue_header,
- struct _Unwind_Context *context);
-_Unwind_Reason_Code
-__gcc_personality_v0 (int version, _Unwind_Action actions,
- _Unwind_Exception_Class exception_class,
- struct _Unwind_Exception *ue_header,
- struct _Unwind_Context *context)
+_Unwind_Reason_Code attribute_hidden
+__gcc_personality_v0 PERSONALITY_PROTO
{
if (__builtin_expect (libgcc_s_personality == NULL, 0))
- init ();
- return libgcc_s_personality (version, actions, exception_class,
- ue_header, context);
+ __libgcc_s_init ();
+ return libgcc_s_personality PERSONALITY_ARGS;
}
diff --git a/libpthread/nptl/sysdeps/generic/unwind-resume.h b/libpthread/nptl/sysdeps/generic/unwind-resume.h
new file mode 100644
index 0000000..a0dd638
--- /dev/null
+++ b/libpthread/nptl/sysdeps/generic/unwind-resume.h
@@ -0,0 +1,33 @@
+/* Definitions for unwind-resume.c. Generic version.
+ Copyright (C) 2015-2016 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; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+/* These describe the arguments to unwinder personality functions,
+ specifically __gcc_personality_v0. A machine-specific sysdeps
+ file might define them differently. */
+#define PERSONALITY_PROTO \
+ (int version, _Unwind_Action actions, \
+ _Unwind_Exception_Class exception_class, \
+ struct _Unwind_Exception *ue_header, \
+ struct _Unwind_Context *context)
+#define PERSONALITY_ARGS \
+ (version, actions, exception_class, ue_header, context)
+
+/* This is defined nonzero by a machine-specific sysdeps file if
+ _Unwind_Resume is provided separately and thus the generic C
+ version should not be defined. */
+#define HAVE_ARCH_UNWIND_RESUME 0
diff --git a/libpthread/nptl/sysdeps/pthread/unwind-forcedunwind.c b/libpthread/nptl/sysdeps/pthread/unwind-forcedunwind.c
index 6b6ad6f..fd45ce1 100644
--- a/libpthread/nptl/sysdeps/pthread/unwind-forcedunwind.c
+++ b/libpthread/nptl/sysdeps/pthread/unwind-forcedunwind.c
@@ -22,16 +22,16 @@
#include <pthreadP.h>
#include <sysdep.h>
#include <libgcc_s.h>
+#include <unwind-resume.h>
#define __libc_dlopen(x) dlopen(x, (RTLD_LOCAL | RTLD_LAZY))
#define __libc_dlsym dlsym
#define __libc_dlclose dlclose
static void *libgcc_s_handle;
-static void (*libgcc_s_resume) (struct _Unwind_Exception *exc);
-static _Unwind_Reason_Code (*libgcc_s_personality)
- (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
- struct _Unwind_Context *);
+void (*__libgcc_s_resume) (struct _Unwind_Exception *exc)
+ attribute_hidden __attribute__ ((noreturn));
+static _Unwind_Reason_Code (*libgcc_s_personality) PERSONALITY_PROTO;
static _Unwind_Reason_Code (*libgcc_s_forcedunwind)
(struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *);
@@ -66,11 +66,12 @@ pthread_cancel_init (void)
#endif
)
{
- printf (LIBGCC_S_SO " must be installed for pthread_cancel to work\n");
+ fprintf (stderr,
+ LIBGCC_S_SO " must be installed for pthread_cancel to work\n");
abort();
}
- libgcc_s_resume = resume;
+ __libgcc_s_resume = resume;
libgcc_s_personality = personality;
libgcc_s_forcedunwind = forcedunwind;
libgcc_s_getcfa = getcfa;
@@ -93,55 +94,41 @@ __unwind_freeres (void)
}
}
-void
+#if !HAVE_ARCH_UNWIND_RESUME
+void attribute_hidden
_Unwind_Resume (struct _Unwind_Exception *exc)
{
if (__builtin_expect (libgcc_s_handle == NULL, 0))
pthread_cancel_init ();
- void (*resume) (struct _Unwind_Exception *exc) = libgcc_s_resume;
- resume (exc);
+ __libgcc_s_resume(exc);
}
+#endif
-_Unwind_Reason_Code
-__gcc_personality_v0 (int version, _Unwind_Action actions,
- _Unwind_Exception_Class exception_class,
- struct _Unwind_Exception *ue_header,
- struct _Unwind_Context *context);
-_Unwind_Reason_Code
-__gcc_personality_v0 (int version, _Unwind_Action actions,
- _Unwind_Exception_Class exception_class,
- struct _Unwind_Exception *ue_header,
- struct _Unwind_Context *context)
+_Unwind_Reason_Code attribute_hidden
+__gcc_personality_v0 PERSONALITY_PROTO
{
if (__builtin_expect (libgcc_s_handle == NULL, 0))
pthread_cancel_init ();
- _Unwind_Reason_Code (*personality)
- (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
- struct _Unwind_Context *) = libgcc_s_personality;
- return personality (version, actions, exception_class, ue_header, context);
+ return libgcc_s_personality PERSONALITY_ARGS;
}
-_Unwind_Reason_Code
+_Unwind_Reason_Code attribute_hidden
_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop,
void *stop_argument)
{
if (__builtin_expect (libgcc_s_handle == NULL, 0))
pthread_cancel_init ();
- _Unwind_Reason_Code (*forcedunwind)
- (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *)
- = libgcc_s_forcedunwind;
- return forcedunwind (exc, stop, stop_argument);
+ return libgcc_s_forcedunwind (exc, stop, stop_argument);
}
-_Unwind_Word
+_Unwind_Word attribute_hidden
_Unwind_GetCFA (struct _Unwind_Context *context)
{
if (__builtin_expect (libgcc_s_handle == NULL, 0))
pthread_cancel_init ();
- _Unwind_Word (*getcfa) (struct _Unwind_Context *) = libgcc_s_getcfa;
- return getcfa (context);
+ return libgcc_s_getcfa (context);
}
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c
deleted file mode 100644
index a6a0515..0000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/* Copyright (C) 2003, 2005, 2007, 2009, 2010 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Jakub Jelinek <jakub@redhat.com>.
-
- 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; see the file COPYING.LIB. If
- not, see <http://www.gnu.org/licenses/>. */
-
-#include <dlfcn.h>
-#include <stdio.h>
-#include <unwind.h>
-#include <pthreadP.h>
-
-#define __libc_dlopen(x) dlopen(x, (RTLD_LOCAL | RTLD_LAZY))
-#define __libc_dlsym dlsym
-#define __libc_dlclose dlclose
-#define __libc_fatal(x) {/*write(STDERR_FILENO, x, strlen(x));*/ abort();}
-
-static void *libgcc_s_handle;
-static void (*libgcc_s_resume) (struct _Unwind_Exception *exc)
- __attribute_used__;
-static _Unwind_Reason_Code (*libgcc_s_personality)
- (_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *);
-static _Unwind_Reason_Code (*libgcc_s_forcedunwind)
- (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
-static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *);
-
-void
-__attribute_noinline__
-pthread_cancel_init (void)
-{
- void *resume, *personality, *forcedunwind, *getcfa;
- void *handle;
-
- if (__builtin_expect (libgcc_s_handle != NULL, 1))
- {
- /* Force gcc to reload all values. */
- __asm__ __volatile__ ("" ::: "memory");
- return;
- }
-
- handle = __libc_dlopen ("libgcc_s.so.1");
-
- if (handle == NULL
- || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL
- || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL
- || (forcedunwind = __libc_dlsym (handle, "_Unwind_ForcedUnwind"))
- == NULL
- || (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL
-#ifdef ARCH_CANCEL_INIT
- || ARCH_CANCEL_INIT (handle)
-#endif
- )
- __libc_fatal ("libgcc_s.so.1 must be installed for pthread_cancel to work\n");
-
- libgcc_s_resume = resume;
- libgcc_s_personality = personality;
- libgcc_s_forcedunwind = forcedunwind;
- libgcc_s_getcfa = getcfa;
- /* Make sure libgcc_s_getcfa is written last. Otherwise,
- pthread_cancel_init might return early even when the pointer the
- caller is interested in is not initialized yet. */
- atomic_write_barrier ();
- libgcc_s_handle = handle;
-}
-
-void
-__libc_freeres_fn_section
-__unwind_freeres (void)
-{
- void *handle = libgcc_s_handle;
- if (handle != NULL)
- {
- libgcc_s_handle = NULL;
- __libc_dlclose (handle);
- }
-}
-
-#ifdef __thumb__
-void
-_Unwind_Resume (struct _Unwind_Exception *exc)
-{
- if (__builtin_expect (libgcc_s_resume == NULL, 0))
- pthread_cancel_init ();
-
- libgcc_s_resume (exc);
-}
-
-#else
-/* It's vitally important that _Unwind_Resume not have a stack frame; the
- ARM unwinder relies on register state at entrance. So we write this in
- assembly. */
-
-__asm__ (
-" .globl _Unwind_Resume\n"
-" .type _Unwind_Resume, %function\n"
-"_Unwind_Resume:\n"
-" .cfi_sections .debug_frame\n"
-" " CFI_STARTPROC "\n"
-" stmfd sp!, {r4, r5, r6, lr}\n"
-" " CFI_ADJUST_CFA_OFFSET (16)" \n"
-" " CFI_REL_OFFSET (r4, 0) "\n"
-" " CFI_REL_OFFSET (r5, 4) "\n"
-" " CFI_REL_OFFSET (r6, 8) "\n"
-" " CFI_REL_OFFSET (lr, 12) "\n"
-" " CFI_REMEMBER_STATE "\n"
-" ldr r4, 1f\n"
-" ldr r5, 2f\n"
-"3: add r4, pc, r4\n"
-" ldr r3, [r4, r5]\n"
-" mov r6, r0\n"
-" cmp r3, #0\n"
-" beq 4f\n"
-"5: mov r0, r6\n"
-" ldmfd sp!, {r4, r5, r6, lr}\n"
-" " CFI_ADJUST_CFA_OFFSET (-16) "\n"
-" " CFI_RESTORE (r4) "\n"
-" " CFI_RESTORE (r5) "\n"
-" " CFI_RESTORE (r6) "\n"
-" " CFI_RESTORE (lr) "\n"
-" bx r3\n"
-" " CFI_RESTORE_STATE "\n"
-"4: bl pthread_cancel_init\n"
-" ldr r3, [r4, r5]\n"
-" b 5b\n"
-" " CFI_ENDPROC "\n"
-" .align 2\n"
-#ifdef __thumb2__
-"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 4\n"
-#else
-"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 8\n"
-#endif
-"2: .word libgcc_s_resume(GOTOFF)\n"
-" .size _Unwind_Resume, .-_Unwind_Resume\n"
-);
-
-#endif
-
-_Unwind_Reason_Code
-__gcc_personality_v0 (_Unwind_State state,
- struct _Unwind_Exception *ue_header,
- struct _Unwind_Context *context)
-{
- if (__builtin_expect (libgcc_s_personality == NULL, 0))
- pthread_cancel_init ();
-
- return libgcc_s_personality (state, ue_header, context);
-}
-
-_Unwind_Reason_Code
-_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop,
- void *stop_argument)
-{
- if (__builtin_expect (libgcc_s_forcedunwind == NULL, 0))
- pthread_cancel_init ();
-
- return libgcc_s_forcedunwind (exc, stop, stop_argument);
-}
-
-_Unwind_Word
-_Unwind_GetCFA (struct _Unwind_Context *context)
-{
- if (__builtin_expect (libgcc_s_getcfa == NULL, 0))
- pthread_cancel_init ();
-
- return libgcc_s_getcfa (context);
-}
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-resume.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-resume.c
deleted file mode 100644
index e2e2e0b..0000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/unwind-resume.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* Copyright (C) 2003, 2005, 2010 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Jakub Jelinek <jakub@redhat.com>.
-
- 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; see the file COPYING.LIB. If
- not, see <http://www.gnu.org/licenses/>. */
-
-#include <dlfcn.h>
-#include <stdio.h>
-#include <unwind.h>
-
-#define __libc_dlopen(x) dlopen(x, (RTLD_LOCAL | RTLD_LAZY))
-#define __libc_dlsym dlsym
-#define __libc_dlclose dlclose
-#define __libc_fatal(x) {/*write(STDERR_FILENO, x, strlen(x));*/ abort();}
-
-static void (*libgcc_s_resume) (struct _Unwind_Exception *exc)
- __attribute_used__;
-static _Unwind_Reason_Code (*libgcc_s_personality)
- (_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *);
-
-static void init (void) __attribute_used__;
-
-static void
-init (void)
-{
- void *resume, *personality;
- void *handle;
-
- handle = __libc_dlopen ("libgcc_s.so.1");
-
- if (handle == NULL
- || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL
- || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL)
- __libc_fatal ("libgcc_s.so.1 must be installed for pthread_cancel to work\n");
-
- libgcc_s_resume = resume;
- libgcc_s_personality = personality;
-}
-#ifdef __thumb__
-void
-_Unwind_Resume (struct _Unwind_Exception *exc)
-{
- if (__builtin_expect (libgcc_s_resume == NULL, 0))
- init ();
- libgcc_s_resume (exc);
-}
-#else
-/* It's vitally important that _Unwind_Resume not have a stack frame; the
- ARM unwinder relies on register state at entrance. So we write this in
- assembly. */
-
-__asm__ (
-" .globl _Unwind_Resume\n"
-" .type _Unwind_Resume, %function\n"
-"_Unwind_Resume:\n"
-" " CFI_SECTIONS (.debug_frame) "\n"
-" " CFI_STARTPROC "\n"
-" stmfd sp!, {r4, r5, r6, lr}\n"
-" " CFI_ADJUST_CFA_OFFSET (16)" \n"
-" " CFI_REL_OFFSET (r4, 0) "\n"
-" " CFI_REL_OFFSET (r5, 4) "\n"
-" " CFI_REL_OFFSET (r6, 8) "\n"
-" " CFI_REL_OFFSET (lr, 12) "\n"
-" " CFI_REMEMBER_STATE "\n"
-" ldr r4, 1f\n"
-" ldr r5, 2f\n"
-"3: add r4, pc, r4\n"
-" ldr r3, [r4, r5]\n"
-" mov r6, r0\n"
-" cmp r3, #0\n"
-" beq 4f\n"
-"5: mov r0, r6\n"
-" ldmfd sp!, {r4, r5, r6, lr}\n"
-" " CFI_ADJUST_CFA_OFFSET (-16) "\n"
-" " CFI_RESTORE (r4) "\n"
-" " CFI_RESTORE (r5) "\n"
-" " CFI_RESTORE (r6) "\n"
-" " CFI_RESTORE (lr) "\n"
-" bx r3\n"
-" " CFI_RESTORE_STATE "\n"
-"4: bl init\n"
-" ldr r3, [r4, r5]\n"
-" b 5b\n"
-" " CFI_ENDPROC "\n"
-" .align 2\n"
-#ifdef __thumb2__
-"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 4\n"
-#else
-"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 8\n"
-#endif
-"2: .word libgcc_s_resume(GOTOFF)\n"
-" .size _Unwind_Resume, .-_Unwind_Resume\n"
-);
-#endif
-
-_Unwind_Reason_Code
-__gcc_personality_v0 (_Unwind_State state,
- struct _Unwind_Exception *ue_header,
- struct _Unwind_Context *context)
-{
- if (__builtin_expect (libgcc_s_personality == NULL, 0))
- init ();
- return libgcc_s_personality (state, ue_header, context);
-}