Report where ELF things got mmap()'d.

icculus · Feb 21, 2013 · 6e3fd50 · 6e3fd50
1 parent 88ad638
commit 6e3fd50
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Showing 3 changed files with 32 additions and 1 deletion.
diff --git a/macelf/macelf.c b/macelf/macelf.c
@@ -162,7 +162,18 @@ static LoadedLibrary *allocate_loaded_lib(const char *soname, void *handle)
     lib->refcount = 1;
     if (hash_insert(loaded_ELFs, socpy, lib) == 1)
     {
-        //printf("Loaded ELF soname '%s'!\n", soname);
+        #if 1
+        if (!handle)
+            printf("Loaded native override for '%s'\n", soname);
+        else
+        {
+            void *addr = NULL;
+            unsigned long len = 0;
+            MOJOELF_getmmaprange(handle, &addr, &len);
+            printf("Loaded ELF soname '%s' => %p - %p (%lu bytes).\n",
+                    soname, addr, ((uint8_t *) addr)+(len-1), len);
+        } // else
+        #endif
         return lib;
     } // if
 
@@ -675,6 +686,15 @@ int main(int argc, char **argv, char **envp)
         return 1;
     } // if
 
+    else
+    {
+        void *addr = NULL;
+        unsigned long len = 0;
+        MOJOELF_getmmaprange(lib, &addr, &len);
+        printf("Loaded ELF executable '%s' => %p - %p (%lu bytes).\n",
+               argv[startarg], addr, ((uint8_t *) addr)+(len-1), len);
+    } // else
+
     if ((symbols_missing) || (dependencies_missing))
     {
         if (report_missing_symbols)

diff --git a/mojoelf.c b/mojoelf.c
@@ -1297,5 +1297,15 @@ const void *MOJOELF_getentry(void *lib)
     return h ? h->entry : NULL;
 } // MOJOELF_getentry
 
+void MOJOELF_getmmaprange(void *lib, void **addr, unsigned long *len)
+{
+    const ElfHandle *h = (const ElfHandle *) lib;
+    if (addr)
+        *addr = h->mmapaddr;
+    if (len)
+        *len = (unsigned long) h->mmaplen;
+} // MOJOELF_getmmaprange
+
+
 // end of mojoelf.c ...
 
diff --git a/mojoelf.h b/mojoelf.h
@@ -30,6 +30,7 @@ void *MOJOELF_dlsym(void *lib, const char *sym);
 void MOJOELF_dlclose(void *lib);
 const char *MOJOELF_dlerror(void);
 const void *MOJOELF_getentry(void *lib);
+void MOJOELF_getmmaprange(void *lib, void **addr, unsigned long *len);
 
 #ifdef __cplusplus
 }