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D46104.id141320.diff
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diff --git a/lib/libthr/arch/arm/Makefile.inc b/lib/libthr/arch/arm/Makefile.inc
new file mode 100644
--- /dev/null
+++ b/lib/libthr/arch/arm/Makefile.inc
@@ -0,0 +1,3 @@
+.PATH: ${.CURDIR}/arch/arm
+SRCS+= \
+ thr_rtld_arm.c
diff --git a/lib/libthr/arch/arm/thr_rtld_arm.c b/lib/libthr/arch/arm/thr_rtld_arm.c
new file mode 100644
--- /dev/null
+++ b/lib/libthr/arch/arm/thr_rtld_arm.c
@@ -0,0 +1,66 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2024, Michal Meloun <mmel@freebsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice unmodified, this list of conditions, and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "thr_private.h"
+
+static char tmp[2];
+
+int __aeabi_idiv(int , int );
+unsigned __aeabi_uidiv(unsigned, unsigned );
+
+struct {int q; int r;} __aeabi_idivmod(int, int );
+struct {unsigned q; unsigned r;} __aeabi_uidivmod(unsigned, unsigned);
+
+struct {int64_t q; int64_t r;} __aeabi_ldivmod(int64_t, int64_t);
+struct {uint64_t q; uint64_t r;} __aeabi_uldivmod(uint64_t, uint64_t);
+
+void __aeabi_memset(void *dest, size_t n, int c);
+void __aeabi_memclr(void *dest, size_t n);
+void __aeabi_memmove(void *dest, void *src, size_t n);
+void __aeabi_memcpy(void *dest, void *src, size_t n);
+
+void
+_thr_resolve_eabi(void)
+{
+
+ __aeabi_idiv(1, 1);
+ __aeabi_uidiv(1, 1);
+
+ __aeabi_idivmod(1, 1);
+ __aeabi_uidivmod(1, 1);
+
+ __aeabi_ldivmod(1, 1);
+ __aeabi_uldivmod(1, 1);
+
+ __aeabi_memset(tmp, 1, 0);
+ __aeabi_memclr(tmp, 1);
+ __aeabi_memmove(tmp, tmp + 1, 1);
+ __aeabi_memcpy(tmp, tmp + 1, 1);
+}
diff --git a/lib/libthr/thread/thr_private.h b/lib/libthr/thread/thr_private.h
--- a/lib/libthr/thread/thr_private.h
+++ b/lib/libthr/thread/thr_private.h
@@ -1103,6 +1103,7 @@
bool __thr_get_main_stack_base(char **base);
bool __thr_get_main_stack_lim(size_t *lim);
int _Tthr_sigqueue(pthread_t pthread, int sig, const union sigval value);
+void _thr_resolve_eabi(void);
__END_DECLS
__NULLABILITY_PRAGMA_POP
diff --git a/lib/libthr/thread/thr_rtld.c b/lib/libthr/thread/thr_rtld.c
--- a/lib/libthr/thread/thr_rtld.c
+++ b/lib/libthr/thread/thr_rtld.c
@@ -214,6 +214,12 @@
return (&curthread->dlerror_seen);
}
+void __weak_symbol
+_thr_resolve_eabi(void)
+{
+
+}
+
void
_thr_rtld_init(void)
{
@@ -276,6 +282,9 @@
_thr_signal_block_check_fast();
_thr_signal_block_setup(curthread);
+ /* resolve __eabi_ functions, if any */
+ _thr_resolve_eabi();
+
uc_len = __getcontextx_size();
uc = alloca(uc_len);
getcontext(uc);
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D46104: libthr: Preresolve selected EABI symbols on arm
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