Read static symbols from .mdebug in sym_info.py (#2460)

* Patch .mdebug for data_with_rodata objects

* Read static symbols from .mdebug in sym_info.py

* Add ability to print all symbols

* Add license

* Fix bug when missing .mdebug section

* /patch_data_with_rodata_mdebug.py license + nitpicks

tools/patch_data_with_rodata_mdebug.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+
+# SPDX-FileCopyrightText: © 2025 ZeldaRET
+# SPDX-License-Identifier: CC0-1.0
+
+import argparse
+import struct
+
+import elftools.elf.elffile
+
+# Patches mdebug for files linked with data_with_rodata.ld by replacing storage
+# class stData with stRData, since .data symbols are now in the .rodata section
+
+SC_MASK = 0x03E00000
+SC_SHIFT = 21
+
+
+def read_u32(f, offset):
+    f.seek(offset)
+    return struct.unpack(">I", f.read(4))[0]
+
+
+def write_u32(f, offset, value):
+    f.seek(offset)
+    f.write(struct.pack(">I", value))
+
+
+def patch_sc(f, offset):
+    value = read_u32(f, offset)
+    sc = (value & SC_MASK) >> SC_SHIFT
+    if sc == 2:  # scData
+        value = (value & ~SC_MASK) | (15 << SC_SHIFT)  # scRData
+        write_u32(f, offset, value)
+
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument("file", help="input file")
+    args = parser.parse_args()
+
+    with open(args.file, "r+b") as f:
+        elf = elftools.elf.elffile.ELFFile(f)
+
+        mdebug_offset = 0
+        for section in elf.iter_sections():
+            if section.name == ".mdebug":
+                mdebug_offset = section["sh_offset"]
+                break
+
+        if mdebug_offset == 0:
+            return
+
+        isymMax = read_u32(f, mdebug_offset + 0x20)
+        cbSymOffset = read_u32(f, mdebug_offset + 0x24)
+        iextMax = read_u32(f, mdebug_offset + 0x58)
+        cbExtOffset = read_u32(f, mdebug_offset + 0x5C)
+
+        for i in range(isymMax):
+            patch_sc(f, cbSymOffset + i * 0xC + 0x8)
+
+        for i in range(iextMax):
+            patch_sc(f, cbExtOffset + i * 0x10 + 0xC)
+
+
+if __name__ == "__main__":
+    main()