1 files changed, 21 insertions, 0 deletions
diff --git a/tools/guest-diag/wall2/kc_dump_fn.py b/tools/guest-diag/wall2/kc_dump_fn.py
new file mode 100644
index 0000000..e481d24
--- /dev/null
+++ b/tools/guest-diag/wall2/kc_dump_fn.py
@@ -0,0 +1,21 @@
+import struct, sys
+VA = int(sys.argv[1], 16)
+N = int(sys.argv[2], 16) if len(sys.argv) > 2 else 0x800
+f = open("/proc/kcore","rb")
+hdr = f.read(64)
+e_phoff = struct.unpack_from("<Q", hdr, 0x20)[0]
+e_phentsize = struct.unpack_from("<H", hdr, 0x36)[0]
+e_phnum = struct.unpack_from("<H", hdr, 0x38)[0]
+segs = []
+for i in range(e_phnum):
+    f.seek(e_phoff + i*e_phentsize)
+    ph = f.read(e_phentsize)
+    p_type, p_flags, p_offset, p_vaddr, p_paddr, p_filesz, p_memsz = struct.unpack_from("<IIQQQQQ", ph, 0)
+    if p_type == 1:
+        segs.append((p_vaddr, p_memsz, p_offset))
+for v, sz, off in segs:
+    if v <= VA < v+sz:
+        f.seek(off + (VA - v))
+        d = f.read(min(N, v+sz-VA))
+        sys.stdout.write(d.hex())
+        break