Continue disscusion about #2648

[jason-chenyixi-chengdu]

Sorry i just make a mistake to close the issue #2648.
The change about this issue is in bellow. Also pull request has been made #2665

---

diff --git a/src/cc/bcc_elf.c b/src/cc/bcc_elf.c
index 584257199d05beb165378dae3151254514a17318..a2aeea7cebba5522952ebad95df5aac25ec1c1f1 100644
--- a/src/cc/bcc_elf.c
+++ b/src/cc/bcc_elf.c
@@ -738,6 +738,24 @@ int bcc_elf_get_type(const char *path) {
     return hdr.e_type;
 }
 
+uint64_t bcc_elf_get_base_address(const char *path) {
+  Elf *e;
+  GElf_Phdr phdr;
+  GElf_Addr base_address;
+  int fd;
+
+  if (openelf(path, &e, &fd) < 0)
+    return -1;
+
+  gelf_getphdr(e, 0, &phdr);
+
+  base_address = phdr.p_vaddr-phdr.p_offset;
+
+  elf_end(e);
+  close(fd);
+  return base_address;
+}
+
 int bcc_elf_is_exe(const char *path) {
   return (bcc_elf_get_type(path) != -1) && (access(path, X_OK) == 0);
 }
diff --git a/src/cc/bcc_elf.h b/src/cc/bcc_elf.h
index b6f5c4313c85cbfc37db3b577e8efa80a09680db..62d5ef7351431883666126e461a7941731f0d238 100644
--- a/src/cc/bcc_elf.h
+++ b/src/cc/bcc_elf.h
@@ -73,6 +73,7 @@ int bcc_elf_get_text_scn_info(const char *path, uint64_t *addr,
                               uint64_t *offset);
 
 int bcc_elf_get_type(const char *path);
+uint64_t bcc_elf_get_base_address(const char *path);
 int bcc_elf_is_shared_obj(const char *path);
 int bcc_elf_is_exe(const char *path);
 int bcc_elf_is_vdso(const char *name);
diff --git a/src/cc/bcc_syms.cc b/src/cc/bcc_syms.cc
index 45d3f2c537a51fbf72467bfe43c37bc56d7ae4da..4970f39d8538cd9a3f0f0ebea96832df556b0977 100644
--- a/src/cc/bcc_syms.cc
+++ b/src/cc/bcc_syms.cc
@@ -683,7 +683,7 @@ static int _find_sym(const char *symname, uint64_t addr, uint64_t,
                      void *payload) {
   struct bcc_symbol *sym = (struct bcc_symbol *)payload;
   if (!strcmp(sym->name, symname)) {
-    sym->offset = addr;
+    sym->offset = addr - sym->base_address;
     return -1;
   }
   return 0;
@@ -738,6 +738,10 @@ int bcc_resolve_symname(const char *module, const char *symname,
 
   sym->name = symname;
   sym->offset = addr;
+
+  if ((sym->base_address = bcc_elf_get_base_address(sym->module)) < 0)
+      goto invalid_module;
+
   if (option == NULL)
     option = &default_option;
 
diff --git a/src/cc/bcc_syms.h b/src/cc/bcc_syms.h
index 352d385bdccb270a429f648385993d002955d8a3..0f6bd7cfe88b280d1b547a1758f93a163281999e 100644
--- a/src/cc/bcc_syms.h
+++ b/src/cc/bcc_syms.h
@@ -29,6 +29,7 @@ struct bcc_symbol {
   const char *demangle_name;
   const char *module;
   uint64_t offset;
+  uint64_t base_address;
 };
 
 typedef int (*SYM_CB)(const char *symname, uint64_t addr);