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wayland/src/dtddata.S

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Validate the protocol xml during scanning Embed the wayland.dtd protocol data into the scanner binary so we can validate external protocol files without requiring makefile changes. Hat-tip to Pekka Paalanen for the embedding trick. The embedding trick doesn't work well if the to-be-embedded file is in a different location than the source file, so copy/link it during configure and then build it in from the local directory. The current expat parser is not a validating parser, moving scanner.c to another parser has the risk of breaking compatibility. This patch adds libxml2 as extra (optional) dependency, but that also requires parsing the input twice. If the protocol fails validation a warning is printed but no error is returned otherwise. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-10 09:53:08 +10:00
/*
* Copyright <EFBFBD> 2015 Collabora, Ltd.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* from: http://www.linuxjournal.com/content/embedding-file-executable-aka-hello-world-version-5967#comment-348129 */
.macro binfile name file
.p2align 2
scanner: drop altmacro from dtddata.S Stop using .altmacro in dtddata.S, because clang does not yet implement it. Turns out that we do not actually seem to need it, and we can modify the syntax to work without it. Moving the double quotes from the binfile line to the .incbin line is required to avoid the assembler error "missing string". Instead of & we now use \() to mark the end of macro argument name. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92988 Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk> Tested-by: Víctor Jáquez <vjaquez@igalia.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-11-18 13:00:00 +02:00
.globl \name\()_begin
\name\()_begin:
.incbin "\file"
\name\()_end:
Validate the protocol xml during scanning Embed the wayland.dtd protocol data into the scanner binary so we can validate external protocol files without requiring makefile changes. Hat-tip to Pekka Paalanen for the embedding trick. The embedding trick doesn't work well if the to-be-embedded file is in a different location than the source file, so copy/link it during configure and then build it in from the local directory. The current expat parser is not a validating parser, moving scanner.c to another parser has the risk of breaking compatibility. This patch adds libxml2 as extra (optional) dependency, but that also requires parsing the input twice. If the protocol fails validation a warning is printed but no error is returned otherwise. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-10 09:53:08 +10:00
.byte 0
.p2align 2
scanner: drop altmacro from dtddata.S Stop using .altmacro in dtddata.S, because clang does not yet implement it. Turns out that we do not actually seem to need it, and we can modify the syntax to work without it. Moving the double quotes from the binfile line to the .incbin line is required to avoid the assembler error "missing string". Instead of & we now use \() to mark the end of macro argument name. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92988 Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk> Tested-by: Víctor Jáquez <vjaquez@igalia.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-11-18 13:00:00 +02:00
.globl \name\()_len
\name\()_len:
.int (\name\()_end - \name\()_begin)
Validate the protocol xml during scanning Embed the wayland.dtd protocol data into the scanner binary so we can validate external protocol files without requiring makefile changes. Hat-tip to Pekka Paalanen for the embedding trick. The embedding trick doesn't work well if the to-be-embedded file is in a different location than the source file, so copy/link it during configure and then build it in from the local directory. The current expat parser is not a validating parser, moving scanner.c to another parser has the risk of breaking compatibility. This patch adds libxml2 as extra (optional) dependency, but that also requires parsing the input twice. If the protocol fails validation a warning is printed but no error is returned otherwise. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-10 09:53:08 +10:00
.endm
.section .rodata
scanner: drop altmacro from dtddata.S Stop using .altmacro in dtddata.S, because clang does not yet implement it. Turns out that we do not actually seem to need it, and we can modify the syntax to work without it. Moving the double quotes from the binfile line to the .incbin line is required to avoid the assembler error "missing string". Instead of & we now use \() to mark the end of macro argument name. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92988 Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk> Tested-by: Víctor Jáquez <vjaquez@igalia.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
2015-11-18 13:00:00 +02:00
binfile DTD_DATA src/wayland.dtd.embed
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