libs/asm-xml: add the AsmXml XML parser as xml.obj

AsmXml 1.4 by Marc Kerbiquet (BSD 3-clause, tibleiz.net), unmodified,
with a KolibriOS wrapper: COFF export table, lib_init and cdecl
adapters for the heap functions passed by the loader. It exports
lib_init and the ax_* functions used by FeedFlow and by the C--
header lib/obj/xml.h, and is shipped as /sys/lib/xml.obj.

Co-authored-by: efpiem <fpmastrorilli@gmail.com>
Assisted-by: Claude:claude-opus-5-5

data/Tupfile.lua

@@ -523,6 +523,7 @@ tup.append_table(img_files, {
  {"LIB/RASTERWORKS.OBJ", VAR_PROGS .. "/develop/libraries/fontRasterWorks_unicode/RasterWorks.obj"},
  {"LIB/SORT.OBJ", VAR_PROGS .. "/develop/libraries/sorter/sort.obj"},
  {"LIB/TINYGL.OBJ", VAR_PROGS .. "/develop/libraries/TinyGL/asm_fork/tinygl.obj"},
+ {"LIB/XML.OBJ", VAR_PROGS .. "/develop/libraries/asm-xml/xml.obj"},
  {"MEDIA/ANIMAGE", VAR_PROGS .. "/media/animage/animage"},
  {"MEDIA/FILLSCR", VAR_PROGS .. "/media/FillScr/fillscr"},
  {"MEDIA/KIV", VAR_PROGS .. "/media/kiv/kiv"},

programs/develop/libraries/asm-xml/LICENSE.txt

@@ -0,0 +1,25 @@
+Copyright (c) 2007-2012, Marc Kerbiquet
+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.
+3. Neither the name of AsmXml nor the names of its contributors may be
+   used to endorse or promote products derived from this software without
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.

programs/develop/libraries/asm-xml/Tupfile.lua

@@ -0,0 +1,2 @@
+if tup.getconfig("NO_FASM") ~= "" then return end
+tup.rule("xml.asm", "fasm %f %o " .. tup.getconfig("KPACK_CMD"), "xml.obj")

programs/develop/libraries/asm-xml/xml.asm

@@ -0,0 +1,59 @@
+; SPDX-License-Identifier: GPL-2.0-only
+;
+; xml.obj - AsmXml parser as a KolibriOS library
+; Copyright (C) KolibriOS team 2026
+;
+; asm-xml.asm and LICENSE.txt are the unmodified AsmXml 1.4 release
+; by Marc Kerbiquet (BSD 3-clause), https://tibleiz.net/asm-xml/
+
+format MS COFF
+
+public EXPORTS
+
+section '.flat' code readable align 16
+
+; AsmXml calls malloc/free as cdecl, the heap functions given to lib_init
+; are stdcall: the caller pops the argument they have already taken
+lib_init:
+        mov     [mem.alloc], eax
+        mov     [mem.free], ebx
+        mov     eax, malloc
+        mov     ebx, free
+        jmp     initialize
+
+malloc:
+        push    dword [esp + 4]
+        call    [mem.alloc]
+        ret
+
+free:
+        push    dword [esp + 4]
+        call    [mem.free]
+        ret
+
+align 4
+mem.alloc       dd ?
+mem.free        dd ?
+
+align 16
+EXPORTS:
+        dd      sz_lib_init,                    lib_init
+        dd      sz_initializeParser,            _initializeParser
+        dd      sz_releaseParser,               _releaseParser
+        dd      sz_parse,                       _parse
+        dd      sz_initializeClassParser,       _initializeClassParser
+        dd      sz_releaseClassParser,          _releaseClassParser
+        dd      sz_classFromElement,            _classFromElement
+        dd      sz_classFromString,             _classFromString
+        dd      0, 0
+
+sz_lib_init                     db 'lib_init', 0
+sz_initializeParser             db 'ax_initializeParser', 0
+sz_releaseParser                db 'ax_releaseParser', 0
+sz_parse                        db 'ax_parse', 0
+sz_initializeClassParser        db 'ax_initializeClassParser', 0
+sz_releaseClassParser           db 'ax_releaseClassParser', 0
+sz_classFromElement             db 'ax_classFromElement', 0
+sz_classFromString              db 'ax_classFromString', 0
+
+include 'asm-xml.asm'