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-rw-r--r--include/exec/gdbstub.h1
-rw-r--r--scripts/feature_to_c.py46
2 files changed, 45 insertions, 2 deletions
diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h
index 1a01c35f8e..a43aa34dad 100644
--- a/include/exec/gdbstub.h
+++ b/include/exec/gdbstub.h
@@ -13,6 +13,7 @@
typedef struct GDBFeature {
const char *xmlname;
const char *xml;
+ int num_regs;
} GDBFeature;
diff --git a/scripts/feature_to_c.py b/scripts/feature_to_c.py
index bcbcb83beb..e04d6b2df7 100644
--- a/scripts/feature_to_c.py
+++ b/scripts/feature_to_c.py
@@ -1,7 +1,7 @@
#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
-import os, sys
+import os, sys, xml.etree.ElementTree
def writeliteral(indent, bytes):
sys.stdout.write(' ' * indent)
@@ -39,10 +39,52 @@ for input in sys.argv[1:]:
with open(input, 'rb') as file:
read = file.read()
+ parser = xml.etree.ElementTree.XMLPullParser(['start', 'end'])
+ parser.feed(read)
+ events = parser.read_events()
+ event, element = next(events)
+ if event != 'start':
+ sys.stderr.write(f'unexpected event: {event}\n')
+ exit(1)
+ if element.tag != 'feature':
+ sys.stderr.write(f'unexpected start tag: {element.tag}\n')
+ exit(1)
+
+ regnum = 0
+ regnums = []
+ tags = ['feature']
+ for event, element in events:
+ if event == 'end':
+ if element.tag != tags[len(tags) - 1]:
+ sys.stderr.write(f'unexpected end tag: {element.tag}\n')
+ exit(1)
+
+ tags.pop()
+ if element.tag == 'feature':
+ break
+ elif event == 'start':
+ if len(tags) < 2 and element.tag == 'reg':
+ if 'regnum' in element.attrib:
+ regnum = int(element.attrib['regnum'])
+
+ regnums.append(regnum)
+ regnum += 1
+
+ tags.append(element.tag)
+ else:
+ raise Exception(f'unexpected event: {event}\n')
+
+ if len(tags):
+ sys.stderr.write('unterminated feature tag\n')
+ exit(1)
+
+ base_reg = min(regnums)
+ num_regs = max(regnums) - base_reg + 1 if len(regnums) else 0
+
sys.stdout.write(' {\n')
writeliteral(8, bytes(os.path.basename(input), 'utf-8'))
sys.stdout.write(',\n')
writeliteral(8, read)
- sys.stdout.write('\n },\n')
+ sys.stdout.write(f',\n {num_regs},\n }},\n')
sys.stdout.write(' { NULL }\n};\n')