From b5985a4f47fc6e8bbc65caab02765cc1d0dc1ea4 Mon Sep 17 00:00:00 2001
From: Adam Dunkels <adam@thingsquare.com>
Date: Thu, 29 Aug 2013 20:16:40 +0200
Subject: [PATCH] Improved handling of the stack idenfitication at end of
 memory that works better for mspgcc 4.7.x

---
 se/sics/mspsim/util/ELF.java | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/se/sics/mspsim/util/ELF.java b/se/sics/mspsim/util/ELF.java
index e4b0e01..fbde95d 100644
--- a/se/sics/mspsim/util/ELF.java
+++ b/se/sics/mspsim/util/ELF.java
@@ -374,6 +374,7 @@ public class ELF {
   public MapTable getMap() {
     MapTable map = new MapTable();
     int sAddrHighest = -1;
+    boolean foundEnd = false;
 
     ELFSection name = sections[symTable.link];
     int len = symTable.size;
@@ -418,13 +419,14 @@ public class ELF {
       if (sAddr > 0 && sAddr < 0x100000) {
 	String symbolName = sn;
 	
-	if (sAddr < 0x5c00 && sAddr > sAddrHighest) {
+	if (sAddr < 0x5c00 && sAddr > sAddrHighest && !sn.equals("__stack")) {
 	  sAddrHighest = sAddr;
 	}
 //	if (bind == ELFSection.SYMBIND_LOCAL) {
 //	  symbolName += " (" + currentFile + ')';
 //	}
 	if ("_end".equals(symbolName)) {
+      foundEnd = true;
 	  map.setHeapStart(sAddr);
 	} else if ("__stack".equals(symbolName)){
 	  map.setStackStart(sAddr);
@@ -455,10 +457,10 @@ public class ELF {
       addr += symTable.getEntrySize();
     }
 
-    if (map.getHeapStart() <= 0 && sAddrHighest > 0) {
-      System.err.printf("Warning: Unable to parse _end symbol. I'm guessing that heap starts at 0x%05x\n", sAddrHighest);
-      map.setHeapStart(sAddrHighest);
-    }
+  if (!foundEnd && sAddrHighest > 0) {
+    System.out.printf("Warning: Unable to parse _end symbol. I'm guessing that heap starts at 0x%05x\n", sAddrHighest);
+    map.setHeapStart(sAddrHighest);
+  }
 
     return map;
   }