auto import from //depot/cupcake/@135843
diff --git a/debuggerd/utility.c b/debuggerd/utility.c
new file mode 100644
index 0000000..8f3931c
--- /dev/null
+++ b/debuggerd/utility.c
@@ -0,0 +1,83 @@
+/* system/debuggerd/utility.c
+**
+** Copyright 2008, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <sys/ptrace.h>
+#include <sys/exec_elf.h>
+#include <assert.h>
+#include <string.h>
+#include <errno.h>
+
+#include "utility.h"
+
+/* Get a word from pid using ptrace. The result is the return value. */
+int get_remote_word(int pid, void *src)
+{
+ return ptrace(PTRACE_PEEKTEXT, pid, src, NULL);
+}
+
+
+/* Handy routine to read aggregated data from pid using ptrace. The read
+ * values are written to the dest locations directly.
+ */
+void get_remote_struct(int pid, void *src, void *dst, size_t size)
+{
+ unsigned int i;
+
+ for (i = 0; i+4 <= size; i+=4) {
+ *(int *)(dst+i) = ptrace(PTRACE_PEEKTEXT, pid, src+i, NULL);
+ }
+
+ if (i < size) {
+ int val;
+
+ assert((size - i) < 4);
+ val = ptrace(PTRACE_PEEKTEXT, pid, src+i, NULL);
+ while (i < size) {
+ ((unsigned char *)dst)[i] = val & 0xff;
+ i++;
+ val >>= 8;
+ }
+ }
+}
+
+/* Map a pc address to the name of the containing ELF file */
+const char *map_to_name(mapinfo *mi, unsigned pc, const char* def)
+{
+ while(mi) {
+ if((pc >= mi->start) && (pc < mi->end)){
+ return mi->name;
+ }
+ mi = mi->next;
+ }
+ return def;
+}
+
+/* Find the containing map info for the pc */
+const mapinfo *pc_to_mapinfo(mapinfo *mi, unsigned pc, unsigned *rel_pc)
+{
+ while(mi) {
+ if((pc >= mi->start) && (pc < mi->end)){
+ // Only calculate the relative offset for shared libraries
+ if (strstr(mi->name, ".so")) {
+ *rel_pc = pc - mi->start;
+ }
+ return mi;
+ }
+ mi = mi->next;
+ }
+ return NULL;
+}