From ab4524b3d7fba872a143b03c9346cb04c3670efa Mon Sep 17 00:00:00 2001 From: Konstantin Belousov Date: Fri, 5 Nov 2021 10:07:24 +0200 Subject: amd64: wrap 64bit sigtramp into vdso Reviewed by: emaste Discussed with: jrtc27 Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D32960 --- sys/tools/vdso_wrap.S | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 sys/tools/vdso_wrap.S (limited to 'sys/tools/vdso_wrap.S') diff --git a/sys/tools/vdso_wrap.S b/sys/tools/vdso_wrap.S new file mode 100644 index 000000000000..807dcf9c06f4 --- /dev/null +++ b/sys/tools/vdso_wrap.S @@ -0,0 +1,48 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2021 The FreeBSD Foundation + * + * This software was developed by Konstantin Belousov + * 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. + * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 + +#define VDSO_BLOB_START(S) __CONCAT(_binary_, __CONCAT(S, _start)) +#define VDSO_BLOB_END(S) __CONCAT(_binary_, __CONCAT(S, _end)) +#define VDSO_BLOB_SIZE(S) __CONCAT(_binary_, __CONCAT(S, _size)) + + .section .rodata, "a", %progbits + .globl VDSO_BLOB_START(VDSO_NAME) + .type VDSO_BLOB_START(VDSO_NAME), %object + .size VDSO_BLOB_START(VDSO_NAME), 0 +VDSO_BLOB_START(VDSO_NAME): + .incbin __XSTRING(VDSO_FILE) + .globl VDSO_BLOB_END(VDSO_NAME) + .type VDSO_BLOB_END(VDSO_NAME), %object + .size VDSO_BLOB_END(VDSO_NAME), 0 +VDSO_BLOB_END(VDSO_NAME): + .globl VDSO_BLOB_SIZE(VDSO_NAME) + .set VDSO_BLOB_SIZE(VDSO_NAME), . - VDSO_BLOB_START(VDSO_NAME) -- cgit v1.2.3