REL: add new section for trampoline code to section header table

Author: sipma

chb/app/CHVersion.py

@@ -1 +1 @@
-chbversion: str = "0.3.0-20250825"
+chbversion: str = "0.3.0-20250826"

chb/cmdline/XComparison.py

@@ -347,6 +347,36 @@ def new_userdata(self) -> Dict[str, Any]:
                     seg["status"] = "new"
                     sectionheaders["segment_" + str(ph2.index)] = seg
             result["section-headers"] = sectionheaders
+        elif len(self.newsections) == 0 and len(self.newcode) == 1:
+            newaddr = self.newcode[0][0]
+            newsize = str(int(self.newcode[0][1], 16) - int(newaddr, 16))
+            sectionheaders = {}
+            for (name, (optsh1, optsh2)) in self.sectionheaderpairs.items():
+                if optsh1 is not None and optsh2 is not None:
+                    if (
+                            (optsh1.vaddr == optsh2.vaddr)
+                            and (optsh1.size != optsh2.size)):
+                        sec1offset = optsh1.get_default_attribute_value(
+                            "sh_offset", "0x0")
+                        offsetdiff = int(optsh1.vaddr, 16) - int(sec1offset, 16)
+
+                        sec1: Dict[str, str] = {}
+                        sec1["addr"] = optsh1.vaddr
+                        sec1["size"] = optsh1.size
+                        sec1["offset"] = optsh1.get_default_attribute_value(
+                            "sh_offset", "0x0")
+                        sectionheaders[name] = sec1
+
+                        sec2offset = str(int(newaddr, 16) - offsetdiff)
+                        sec2: Dict[str, str] = {}
+                        sec2["addr"] = newaddr
+                        sec2["size"] = newsize
+                        sec2["type"] = "0x1"
+                        sec2["flags"] = "0x6"
+                        sec2["status"] = "new"
+                        sec2["offset"] = sec2offset
+                        sectionheaders[".trampolinecode"] = sec2
+                        result["section-headers"] = sectionheaders
         return result
 
     def prepare_report(self) -> str:

chb/cmdline/relationalcmds.py

@@ -217,7 +217,7 @@ def relational_prepare_command(args: argparse.Namespace) -> NoReturn:
         with open(save_aux_userdata + ".json", "w") as fp:
             json.dump(userhints.hints, fp, indent=2)
 
-    if len(xcomparison.newsegments) > 0:
+    if len(xcomparison.newsegments) > 0 or len(xcomparison.newcode) > 0:
         tmpfilename = os.path.join(path2, "tmp_userdata.json")
         tmpuserdata: Dict[str, Any] = {}
         tmpuserdata["userdata"] = userhints.hints