Merge pull request dholm#3 from jszakmeister/fix-detection-on-snow-le…

…opard

Attempt to detect the correct processor type under Snow Leopard's gdb.

.gdb/detect-target.sh

@@ -5,6 +5,9 @@ TARGET_DOUBLET=$(grep 'file type' /tmp/gdb_info_target |
                  cut -d ' ' -f 4 |
                  uniq |
                  tr -d '\n')
+OSABI=$(grep 'currently ' /tmp/gdb_info_target |
+        sed 's/.*currently "\([^"]*\)".*/\1/' |
+        tr -d '\n')
 GDB_FILE="/tmp/gdb_target_arch.gdb"
 rm -f "$GDB_FILE"
 
@@ -23,4 +26,12 @@ case "$TARGET_DOUBLET" in
         echo "set \$MIPS = 1" >> $GDB_FILE;
         echo "set \$64BITS = 1" >> $GDB_FILE;
         ;;
+    mach-o-*)
+        if test "$OSABI" == "Darwin64"; then
+            echo "set \$X86_64 = 1" >> $GDB_FILE;
+            echo "set \$64BITS = 1" >> $GDB_FILE;
+        elif test "$OSABI" == "Darwin"; then
+            echo "set \$X86 = 1" >> $GDB_FILE;
+        fi
+        ;;
 esac

.gdb/setup.gdb

@@ -12,6 +12,7 @@ define setup-detect-target
   set logging on
   set pagination off
   info target
+  show osabi
   set pagination on
   set logging off
   set logging redirect off