Add beginning of DSP code (done by Catalin Patulea), but don't enable it

yet as there's no C54xx compiler in the toolchain yet..


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17547 a1c6a512-1295-4272-9138-f99709370657

tools/xml2h.py

@@ -0,0 +1,191 @@
+#!/usr/bin/python
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+# Copyright (C) 2007 Catalin Patulea <cat@vv.carleton.ca>
+#
+#  All files in this archive are subject to the GNU General Public License.
+#  See the file COPYING in the source tree root for full license agreement.
+# 
+#  This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+#  KIND, either express or implied.
+#
+import sys, os.path, array, re
+from xml.dom import Node
+from xml.dom.minidom import parse
+
+
+C_IDENT_RE = re.compile('^[0-9a-zA-Z_]+$')
+
+
+def getText(nodelist):
+    rc = ""
+    for node in nodelist:
+        if node.nodeType == node.TEXT_NODE:
+            rc = rc + node.data
+    return rc
+
+
+def descendAll(root, tagname):
+    for child in root.childNodes:
+        if child.nodeType == Node.ELEMENT_NODE and child.tagName == tagname:
+            yield child
+
+
+def descend(root, tagname):
+    return descendAll(root, tagname).next()
+
+
+def getTagText(root, tagname):
+    try:
+        tag = descend(root, tagname)
+    except StopIteration:
+        return None
+    return getText(tag.childNodes)
+
+
+def main():
+    dom = parse(sys.stdin)
+    
+    ofd = descend(dom, "ofd")
+    object_file = descend(ofd, "object_file")
+    object_file_name = descend(object_file, "name")
+    
+    out_filepath = getText(object_file_name.childNodes)
+    sys.stderr.write("*.out filename (input): %s\n" % out_filepath)
+    
+    out_file = open(out_filepath, "rb")
+    h_file = sys.stdout
+    
+    h_file.write("""#ifndef DSP_IMAGE
+#define DSP_IMAGE
+/*
+ * Automatically generated by xml2h.py from %s.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+""" % out_filepath)
+
+    # Section data and directory.
+    h_directory = ["""
+static const struct dsp_section dsp_image[] = {"""]
+    
+    ti_coff = descend(object_file, "ti_coff")
+    for section in descendAll(ti_coff, "section"):
+        page = int(getTagText(section, "page") or "0", 16)
+        name = getTagText(section, "name")
+        physical_addr = int(getTagText(section, "physical_addr"), 16)
+        raw_data_size = int(getTagText(section, "raw_data_size"), 16)
+        copy = getTagText(section, "copy")
+        data = getTagText(section, "data")
+        regular = getTagText(section, "regular")
+        text = getTagText(section, "text")
+        bss = getTagText(section, "bss")
+        
+        file_offsets = descend(section, "file_offsets")
+        raw_data_ptr = int(getTagText(file_offsets, "raw_data_ptr"), 16)
+        
+        if copy:
+            # Empirically, .debug* sections have this attribute set.
+            sys.stderr.write(
+                "%s: didn't copy debug section ('copy' attribute set)\n" %
+                name)
+            continue
+        
+        if raw_data_size == 0:
+            sys.stderr.write("%s: not copying empty section\n" % name)
+            continue
+
+        if raw_data_size % 2 != 0:
+            sys.stderr.write("%s: error, raw_data_size 0x%04x not a multiple "
+                "of word size (2 bytes)\n" % (name, raw_data_size))
+            break
+        
+        if data or regular or text:
+            sys.stderr.write("%s: placing 0x%04x words at 0x%04x from offset "
+                "0x%08x\n" % (
+                name, raw_data_size >> 1, physical_addr, raw_data_ptr))
+
+            sanitized_name = name.replace(".", "_")
+            h_file.write(("static const unsigned short _section%s[] = {\n" %
+                sanitized_name))
+
+            out_file.seek(raw_data_ptr)
+            data = array.array('H')
+            data.fromfile(out_file, raw_data_size >> 1)
+            h_file.write("\t")
+            for word in data:
+                h_file.write("0x%04x, " % word)
+            h_file.write("""
+};
+""")
+            
+            h_directory.append("\t{_section%s, 0x%04x, 0x%04x}," % (
+                sanitized_name, physical_addr, raw_data_size >> 1))
+                
+            continue
+        
+        if bss:
+            sys.stderr.write("%s: bss section, 0x%04x words at 0x%04x\n" % (
+                name, raw_data_size >> 1, physical_addr))
+            
+            h_directory.append("\t{NULL /* %s */, 0x%04x, 0x%04x}," % (
+                name, physical_addr, raw_data_size >> 1))
+            continue
+        
+        sys.stderr.write("%s: error, unprocessed section\n" % name)
+    
+    h_file.write("\n")
+
+    h_directory.append("\t{NULL, 0, 0}")
+    h_directory.append("};")
+    
+    h_file.write("\n".join(h_directory))
+    h_file.write("\n")
+    
+    # Symbols.
+    symbol_table = descend(ti_coff, "symbol_table")
+    h_file.write("""
+/* Symbol table, usable with the DSP_() macro (see dsp-target.h). */
+""")
+    for symbol in descendAll(symbol_table, "symbol"):
+        name = getTagText(symbol, "name")
+        kind = getTagText(symbol, "kind")
+        value = int(getTagText(symbol, "value"), 16)
+        
+        if kind != "defined":
+            continue
+        
+        if not C_IDENT_RE.match(name):
+            continue
+        
+        h_file.write("#define %s 0x%04x\n" % (name, value))
+    
+    h_file.write("\n#endif\n")
+    h_file.close()
+    out_file.close()
+    
+    dom.unlink()
+
+
+if __name__ == "__main__":
+    main()