GEEKING

Android/libroblox/JNIProfiler/read_maps.c

@@ -0,0 +1,69 @@
+/*
+ * Part of the android-ndk-profiler library.
+ * Copyright (C) Richard Quirk
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "read_maps.h"
+
+static char s_line[256];
+
+void free_maps(struct proc_map *s)
+{
+    struct proc_map *next = s->next;
+    while (next != NULL) {
+        struct proc_map *tmp = next;
+        next = next->next;
+        free(tmp);
+    }
+    free(s);
+}
+
+struct proc_map *read_maps(FILE *fp, const char *lname)
+{
+    struct proc_map *results = NULL;
+    struct proc_map *current = NULL;
+    size_t namelen = strlen(lname);
+    while (fgets(s_line, sizeof(s_line), fp) != NULL) {
+        size_t len = strlen(s_line);
+        len--;
+        s_line[len] = 0;
+        if (namelen < len && strcmp(lname, &s_line[len - namelen]) == 0) {
+            char c[1];
+            char perm[4];
+            int lo, base, hi;
+            sscanf(s_line, "%x-%x %4c %x %c", &lo, &hi, perm, &base, c);
+            if (results == NULL) {
+                current = malloc(sizeof(struct proc_map));
+                current->next = NULL;
+                results = current;
+            } else {
+                current->next = malloc(sizeof(struct proc_map));
+                current = current->next;
+                current->next = NULL;
+            }
+            current->base = base;
+            current->lo = lo;
+            current->hi = hi;
+        }
+    }
+    return results;
+}
+
+unsigned int get_real_address(const struct proc_map *maps, unsigned int fake)
+{
+    const struct proc_map *mp = maps;
+    while (mp) {
+        if (fake >= mp->lo && fake <= mp->hi) {
+            return fake - mp->lo;
+        }
+        mp = mp->next;
+    }
+    return fake;
+}