patch-2.4.22 linux-2.4.22/arch/ia64/scripts/unwcheck.sh

• Lines: 110
• Date: 2003-08-25 04:44:39.000000000 -0700
• Orig file: linux-2.4.21/arch/ia64/scripts/unwcheck.sh
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/ia64/scripts/unwcheck.sh linux-2.4.22/arch/ia64/scripts/unwcheck.sh
@@ -0,0 +1,109 @@
+#!/bin/sh
+#   Usage: unwcheck.sh <executable_file_name>
+#   Pre-requisite: readelf [from Gnu binutils package]
+#   Purpose: Check the following invariant
+#       For each code range in the input binary:
+#          Sum[ lengths of unwind regions] = Number of slots in code range.
+#   Author : Harish Patil
+#   First version: January 2002
+#   Modified : 2/13/2002
+#   Modified : 3/15/2002: duplicate detection
+readelf -u $1 | gawk '\
+ function todec(hexstr){
+    dec = 0;
+    l = length(hexstr);
+    for (i = 1; i <= l; i++)
+    {
+        c = substr(hexstr, i, 1);
+        if (c == "A")
+            dec = dec*16 + 10;
+        else if (c == "B")
+            dec = dec*16 + 11;
+        else if (c == "C")
+            dec = dec*16 + 12;
+        else if (c == "D")
+            dec = dec*16 + 13;
+        else if (c == "E")
+            dec = dec*16 + 14;
+        else if (c == "F")
+            dec = dec*16 + 15;
+        else
+            dec = dec*16 + c;
+    }
+    return dec;
+ }
+ BEGIN { first = 1; sum_rlen = 0; no_slots = 0; errors=0; no_code_ranges=0; }
+ {
+   if (NF==5 && $3=="info")
+   {
+      no_code_ranges += 1;
+      if (first == 0)
+      {
+         if (sum_rlen != no_slots)
+         {
+            print full_code_range;
+            print "       ", "lo = ", lo, " hi =", hi;
+            print "       ", "sum_rlen = ", sum_rlen, "no_slots = " no_slots;
+            print "       ","   ", "*******ERROR ***********";
+            print "       ","   ", "sum_rlen:", sum_rlen, " != no_slots:" no_slots;
+            errors += 1;
+         }
+         sum_rlen = 0;
+      }
+      full_code_range =  $0;
+      code_range =  $2;
+      gsub("..$", "", code_range);
+      gsub("^.", "", code_range);
+      split(code_range, addr, "-");
+      lo = toupper(addr[1]);
+
+      code_range_lo[no_code_ranges] = addr[1];
+      occurs[addr[1]] += 1;
+      full_range[addr[1]] = $0;
+
+      gsub("0X.[0]*", "", lo);
+      hi = toupper(addr[2]);
+      gsub("0X.[0]*", "", hi);
+      no_slots = (todec(hi) - todec(lo))/ 16*3
+      first = 0;
+   }
+   if (index($0,"rlen") > 0 )
+   {
+    rlen_str =  substr($0, index($0,"rlen"));
+    rlen = rlen_str;
+    gsub("rlen=", "", rlen);
+    gsub(")", "", rlen);
+    sum_rlen = sum_rlen +  rlen;
+   }
+  }
+  END {
+      if (first == 0)
+      {
+         if (sum_rlen != no_slots)
+         {
+            print "code_range=", code_range;
+            print "       ", "lo = ", lo, " hi =", hi;
+            print "       ", "sum_rlen = ", sum_rlen, "no_slots = " no_slots;
+            print "       ","   ", "*******ERROR ***********";
+            print "       ","   ", "sum_rlen:", sum_rlen, " != no_slots:" no_slots;
+            errors += 1;
+         }
+      }
+    no_duplicates = 0;
+    for (i=1; i<=no_code_ranges; i++)
+    {
+        cr = code_range_lo[i];
+        if (reported_cr[cr]==1) continue;
+        if ( occurs[cr] > 1)
+        {
+            reported_cr[cr] = 1;
+            print "Code range low ", code_range_lo[i], ":", full_range[cr], " occurs: ", occurs[cr], " times.";
+            print " ";
+            no_duplicates++;
+        }
+    }
+    print "======================================"
+    print "Total errors:", errors, "/", no_code_ranges, " duplicates:", no_duplicates;
+    print "======================================"
+  }
+  '