From 57dd13b3d5ffddf5c7dbecb412b05d1232519ceb Mon Sep 17 00:00:00 2001
From: Stefano Moioli <smxdev4@gmail.com>
Date: Sun, 7 Apr 2024 21:58:23 +0200
Subject: [PATCH] add is_range_mapped

---
 xzre.h   | 10 ++++++++++
 xzre.lds |  3 +++
 2 files changed, 13 insertions(+)

diff --git a/xzre.h b/xzre.h
index 69df387..59471dd 100644
--- a/xzre.h
+++ b/xzre.h
@@ -1233,6 +1233,16 @@ extern BOOL chacha_decrypt(
  */
 extern BOOL secret_data_get_decrypted(u8 *output, global_context_t *ctx);
 
+/**
+ * @brief verify if a memory range is mapped
+ * 
+ * @param addr the start address
+ * @param length the length of the range to check
+ * @param ctx a structure with a libc_import_t field at offset 0x10
+ * @return BOOL TRUE if the whole range is mapped, FALSE otherwise
+ */
+extern BOOL is_range_mapped(u8* addr, u8 length, global_context_t* ctx);
+
 extern global_context_t *global_ctx;
 
 #include "util.h"
diff --git a/xzre.lds b/xzre.lds
index 0d5a17e..ab27536 100644
--- a/xzre.lds
+++ b/xzre.lds
@@ -110,6 +110,9 @@ SECTIONS {
 
         "secret_data_get_decrypted" = ".";
         *(.text.parse_lzma10);
+
+        "is_range_mapped" = ".";
+        *(.text.hc_find_funa);
     }
 } INSERT AFTER .text;