From: norly <ny-git@enpas.org>
Date: Tue, 28 May 2013 22:34:51 +0000 (+0100)
Subject: Implement orphaned sections
X-Git-Url: https://git.enpas.org/?p=centaur.git;a=commitdiff_plain;h=eb5a1daba781013ccf168b95510d0f67f0b9c946

Implement orphaned sections

Orphaned sections are not (fully) included in any LOAD PHDR and can thus
be moved and stripped at will without changing the memory image of the
program.
---

diff --git a/include/libelfu/modeltypes.h b/include/libelfu/modeltypes.h
index e8a9c01..bea9322 100644
--- a/include/libelfu/modeltypes.h
+++ b/include/libelfu/modeltypes.h
@@ -37,6 +37,7 @@ typedef struct {
 
   CIRCLEQ_HEAD(ScnList, ElfuScn) scnList;
   CIRCLEQ_HEAD(PhdrList, ElfuPhdr) phdrList;
+  CIRCLEQ_HEAD(OrphanScnList, ElfuScn) orphanScnList;
 
   ElfuScn *shstrtab;
 } ElfuElf;
diff --git a/src/model/dump.c b/src/model/dump.c
index 882ba0a..67a498a 100644
--- a/src/model/dump.c
+++ b/src/model/dump.c
@@ -209,6 +209,15 @@ void elfu_mDumpElf(ElfuElf *me)
   ELFU_INFO("\n");
 
 
+  ELFU_INFO("Orphaned sections:\n");
+  CIRCLEQ_FOREACH(ms, &me->orphanScnList, elemChildScn) {
+    ELFU_INFO("        * %-17s @ %8jx\n",
+              elfu_mScnName(me, ms),
+              ms->shdr.sh_addr);
+  }
+  ELFU_INFO("\n");
+
+
   ELFU_INFO("Sections:\n");
   ELFU_INFO("     #  Name              sh_type          sh_addr sh_offset  sh_size ES Fl Al sh_link           sh_info          \n");
   ELFU_INFO("       |                 |               |        |         |        |  |  |  |                 |                 \n");
diff --git a/src/model/fromFile.c b/src/model/fromFile.c
index fd6aba0..cb09352 100644
--- a/src/model/fromFile.c
+++ b/src/model/fromFile.c
@@ -167,6 +167,7 @@ ElfuElf* elfu_mFromElf(Elf *e)
   /* General stuff */
   CIRCLEQ_INIT(&me->scnList);
   CIRCLEQ_INIT(&me->phdrList);
+  CIRCLEQ_INIT(&me->orphanScnList);
   me->shstrtab = NULL;
 
   me->elfclass = gelf_getclass(e);
@@ -286,6 +287,8 @@ ElfuElf* elfu_mFromElf(Elf *e)
 
       if (parent) {
         CIRCLEQ_INSERT_TAIL(&parent->childScnList, ms, elemChildScn);
+      } else {
+        CIRCLEQ_INSERT_TAIL(&me->orphanScnList, ms, elemChildScn);
       }
     }