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-rw-r--r--lib/csu/common/crtbegin.c100
-rw-r--r--lib/csu/common/crtbrand.S54
-rw-r--r--lib/csu/common/crtend.c70
-rw-r--r--lib/csu/common/csu_common.h50
-rw-r--r--lib/csu/common/feature_note.S47
-rw-r--r--lib/csu/common/ignore_init_note.S48
-rw-r--r--lib/csu/common/notes.h32
7 files changed, 401 insertions, 0 deletions
diff --git a/lib/csu/common/crtbegin.c b/lib/csu/common/crtbegin.c
new file mode 100644
index 000000000000..8ef9b8923c21
--- /dev/null
+++ b/lib/csu/common/crtbegin.c
@@ -0,0 +1,100 @@
+/*-
+ * SPDX-License-Identifier: BSD-1-Clause
+ *
+ * Copyright 2018 Andrew Turner
+ *
+ * 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, this list of conditions and the following disclaimer.
+ *
+ * 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 <sys/param.h>
+
+#include "crt.h"
+
+typedef void (*crt_func)(void);
+
+extern void *__dso_handle __hidden;
+
+#ifndef SHARED
+void *__dso_handle = 0;
+#else
+void *__dso_handle = &__dso_handle;
+void __cxa_finalize(void *) __weak_symbol;
+
+/*
+ * Call __cxa_finalize with the dso handle in shared objects.
+ * When we have ctors/dtors call from the dtor handler before calling
+ * any dtors, otherwise use a destructor.
+ */
+#ifndef HAVE_CTORS
+__attribute__((destructor))
+#endif
+static void
+run_cxa_finalize(void)
+{
+
+ if (__cxa_finalize != NULL)
+ __cxa_finalize(__dso_handle);
+}
+#endif
+
+/*
+ * On some architectures and toolchains we may need to call the .dtors.
+ * These are called in the order they are in the ELF file.
+ */
+#ifdef HAVE_CTORS
+static void __do_global_dtors_aux(void) __used;
+
+static crt_func __CTOR_LIST__[] __section(".ctors") __used = {
+ (crt_func)-1
+};
+static crt_func __DTOR_LIST__[] __section(".dtors") __used = {
+ (crt_func)-1
+};
+
+extern const char startof_dtors[] __asm(".startof..dtors")
+ __weak_symbol __hidden;
+extern const char sizeof_dtors[] __asm(".sizeof..dtors")
+ __weak_symbol __hidden;
+
+static void
+__do_global_dtors_aux(void)
+{
+ crt_func fn;
+ uintptr_t dtors_end;
+ int n;
+
+#ifdef SHARED
+ run_cxa_finalize();
+#endif
+
+ dtors_end = (uintptr_t)&startof_dtors + (uintptr_t)&sizeof_dtors;
+ for (n = 1;; n++) {
+ fn = __DTOR_LIST__[n];
+ if (fn == (crt_func)0 || fn == (crt_func)-1 || (dtors_end > 0 &&
+ (uintptr_t)&__DTOR_LIST__[n] >= dtors_end))
+ break;
+ fn();
+ }
+}
+
+asm (
+ ".pushsection .fini \n"
+ "\t" INIT_CALL_SEQ(__do_global_dtors_aux) "\n"
+ ".popsection \n"
+);
+#endif
diff --git a/lib/csu/common/crtbrand.S b/lib/csu/common/crtbrand.S
new file mode 100644
index 000000000000..a06f72daa99d
--- /dev/null
+++ b/lib/csu/common/crtbrand.S
@@ -0,0 +1,54 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright 2000 David E. O'Brien, John D. Polstra.
+ * All rights reserved.
+ *
+ * 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, 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 <machine/asm.h>
+#include <sys/param.h>
+#include <sys/elf_common.h>
+#include "notes.h"
+
+/*
+ * Special ".note.tag" entry specifying the ABI version. See
+ * http://www.netbsd.org/Documentation/kernel/elf-notes.html
+ * for more information.
+ */
+
+ .section .note.tag,"aGR",%note,.freebsd.noteG,comdat
+ .p2align 2
+ .4byte 2f-1f
+ .4byte 4f-3f
+ .4byte NT_FREEBSD_ABI_TAG
+1: .asciz NOTE_FREEBSD_VENDOR
+2: .p2align 2
+3: .4byte __FreeBSD_version
+4:
+
+ .section .note.GNU-stack,"",%progbits
+
+#ifdef __aarch64__
+/* This is needed in all objects for BTI to be used in the linked elf file */
+GNU_PROPERTY_AARCH64_FEATURE_1_NOTE(GNU_PROPERTY_AARCH64_FEATURE_1_VAL)
+#endif
diff --git a/lib/csu/common/crtend.c b/lib/csu/common/crtend.c
new file mode 100644
index 000000000000..9eb75de2ef60
--- /dev/null
+++ b/lib/csu/common/crtend.c
@@ -0,0 +1,70 @@
+/*-
+ * SPDX-License-Identifier: BSD-1-Clause
+ *
+ * Copyright 2018 Andrew Turner
+ *
+ * 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, this list of conditions and the following disclaimer.
+ *
+ * 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 <sys/types.h>
+#include "crt.h"
+
+typedef void (*crt_func)(void);
+
+#ifdef HAVE_CTORS
+
+/*
+ * On some architectures and toolchains we may need to call the .ctors.
+ * These are called in the reverse order they are in the ELF file.
+ */
+static void __do_global_ctors_aux(void) __used;
+
+static crt_func __CTOR_END__[] __section(".ctors") __used = {
+ (crt_func)0
+};
+static crt_func __DTOR_END__[] __section(".dtors") __used = {
+ (crt_func)0
+};
+
+extern const char startof_ctors[] __asm(".startof..ctors")
+ __weak_symbol __hidden;
+
+static void
+__do_global_ctors_aux(void)
+{
+ crt_func fn;
+ uintptr_t ctors_start;
+ int n;
+
+ ctors_start = (uintptr_t)&startof_ctors;
+ for (n = 1;; n++) {
+ fn = __CTOR_END__[-n];
+ if (fn == (crt_func)0 || fn == (crt_func)-1 ||
+ (ctors_start > 0 &&
+ (uintptr_t)&__CTOR_END__[-n] < ctors_start))
+ break;
+ fn();
+ }
+}
+
+asm (
+ ".pushsection .init \n"
+ "\t" INIT_CALL_SEQ(__do_global_ctors_aux) "\n"
+ ".popsection \n"
+);
+#endif
diff --git a/lib/csu/common/csu_common.h b/lib/csu/common/csu_common.h
new file mode 100644
index 000000000000..c7d4a640e2b0
--- /dev/null
+++ b/lib/csu/common/csu_common.h
@@ -0,0 +1,50 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright 1996-1998 John D. Polstra.
+ * All rights reserved.
+ *
+ * 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, 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.
+ */
+
+#ifdef _CSU_COMMON_H_
+
+/*
+ * This file includes both definitions and declarations, it can be
+ * included only into one compilation unit for csu objects. We cannot
+ * practically check this, but at least guard against
+ * double-inclusion.
+ */
+#error "Include this file only once"
+#else
+#define _CSU_COMMON_H_
+
+char **environ;
+const char *__progname = "";
+
+#ifdef GCRT
+extern int eprol;
+extern int etext;
+#endif
+
+int main(int, char **, char **);
+
+#endif /* _CSU_COMMON_H_ */
diff --git a/lib/csu/common/feature_note.S b/lib/csu/common/feature_note.S
new file mode 100644
index 000000000000..fb9f6141699e
--- /dev/null
+++ b/lib/csu/common/feature_note.S
@@ -0,0 +1,47 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright 2000 David E. O'Brien, John D. Polstra.
+ * All rights reserved.
+ *
+ * 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, 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 <machine/asm.h>
+#include <sys/elf_common.h>
+#include "notes.h"
+
+ .section .note.tag,"aR",%note
+ .p2align 2
+ .4byte 2f-1f
+ .4byte 4f-3f
+ .4byte NT_FREEBSD_FEATURE_CTL
+1: .asciz NOTE_FREEBSD_VENDOR
+2: .p2align 2
+3: .4byte 0
+4:
+
+ .section .note.GNU-stack,"",%progbits
+
+#ifdef __aarch64__
+/* This is needed in all objects for BTI to be used in the linked elf file */
+GNU_PROPERTY_AARCH64_FEATURE_1_NOTE(GNU_PROPERTY_AARCH64_FEATURE_1_VAL)
+#endif
diff --git a/lib/csu/common/ignore_init_note.S b/lib/csu/common/ignore_init_note.S
new file mode 100644
index 000000000000..d78be61f17a9
--- /dev/null
+++ b/lib/csu/common/ignore_init_note.S
@@ -0,0 +1,48 @@
+/*-
+ * SPDX-License-Identifier: BSD-1-Clause
+ *
+ * Copyright 2012 Konstantin Belousov <kib@FreeBSD.org>
+ * Copyright (c) 2018 The FreeBSD Foundation
+ *
+ * Parts of this software was developed by Konstantin Belousov
+ * <kib@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
+ *
+ * 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, this list of conditions and the following disclaimer.
+ *
+ * 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 <machine/asm.h>
+#include <sys/elf_common.h>
+
+#include "notes.h"
+
+ .section .note.tag,"aR",%note
+ .p2align 2
+ .4byte 2f-1f
+ .4byte 4f-3f
+ .4byte NT_FREEBSD_NOINIT_TAG
+1: .asciz NOTE_FREEBSD_VENDOR
+2: .p2align 2
+3: .4byte 0
+4:
+
+ .section .note.GNU-stack,"",%progbits
+
+#ifdef __aarch64__
+/* This is needed in all objects for BTI to be used in the linked elf file */
+GNU_PROPERTY_AARCH64_FEATURE_1_NOTE(GNU_PROPERTY_AARCH64_FEATURE_1_VAL)
+#endif
diff --git a/lib/csu/common/notes.h b/lib/csu/common/notes.h
new file mode 100644
index 000000000000..fc4e4d082c21
--- /dev/null
+++ b/lib/csu/common/notes.h
@@ -0,0 +1,32 @@
+/*-
+ * SPDX-License-Identifier: BSD-1-Clause
+ *
+ * Copyright 2012 Konstantin Belousov <kib@FreeBSD.org>
+ * All rights reserved.
+ *
+ * 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, this list of conditions and the following disclaimer.
+ *
+ * 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.
+ */
+
+#ifndef CSU_COMMON_NOTES_H
+#define CSU_COMMON_NOTES_H
+
+#define NOTE_FREEBSD_VENDOR "FreeBSD"
+
+#define NOTE_SECTION ".note.tag"
+
+#endif
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