VtoyShim build script update.

EDK2/build_shim.sh

@@ -37,12 +37,70 @@ else
 fi
 
 if [ -e $VTEFI_PATH ]; then
+
+    objdump -h "$VTEFI_PATH"
+    echo ""
+
     objcopy \
         --add-section .sbat="MdeModulePkg/Application/VtoyShim/sbat.csv" \
         --set-section-flags .sbat=alloc,load,readonly,data \
         "$VTEFI_PATH" "$DST_PATH"
-        
-    objcopy --adjust-section-vma .sbat=0x1000 "$DST_PATH"
+
+    #find the right sbat section VMA
+    tmpfile=$(mktemp)
+    
+    cnt1=$(objdump -h "$DST_PATH" | grep -P '^\s*[0-9][0-9]* \.' | wc -l)
+    cnt2=$(objdump -h "$DST_PATH" | grep -P 'ALLOC' | wc -l)
+    
+    if [ $cnt1 -ne $cnt2 ]; then
+        echo "Section count mismatch $cnt1 $cnt2"
+        objdump -h "$DST_PATH"
+        exit 1
+    fi
+
+    objdump -h "$DST_PATH" | grep -P '^\s*[0-9][0-9]* \.' > $tmpfile    
+    sbat_size=$(stat -c '%s' MdeModulePkg/Application/VtoyShim/sbat.csv)    
+    sbat_size_hex=$(printf '0x%08x' $sbat_size)
+    
+    lmax='0000000000000000'
+    lsize='0000000000000000'
+    while read line; do
+        echo $line        
+        lbase=$(echo $line | awk '{print $4}')        
+        if expr "$lmax" \< "$lbase" > /dev/null; then
+            lmax=$lbase
+            lsize=$(echo $line | awk '{print $3}')
+        fi
+        echo "max=$lmax size=$lsize"
+    done < $tmpfile
+    rm -f $tmpfile
+
+
+    lvma=$((0x${lsize}+0x${lmax}))
+    lvma_align=`printf '0x%08x' $(( (lvma + 4095) / 4096 * 4096 ))`
+    echo "sbat section lvma_align=$lvma_align"    
+    
+    objcopy --adjust-section-vma .sbat=$lvma_align "$DST_PATH"
+
+    img_base=$(objdump -p "$DST_PATH" | grep ImageBase | awk '{print $2}')
+    size_img=0x$(objdump -p "$DST_PATH" | grep SizeOfImage | awk '{print $2}')
+    sbat_end=`printf '0x%08x' $(($lvma_align+$sbat_size_hex))`
+
+    if [ "$img_base" != "0000000000000000" ]; then
+        echo "#### ImageBase is not 0 $img_base"
+        exit 1
+    fi
+    
+    echo "size_img=$size_img  sbat_size=$sbat_size_hex sbat_range $lvma_align - $sbat_end"    
+
+    if expr "$size_img" \< "$sbat_end" > /dev/null; then
+        echo "SizeOfImage $size_img less than sbat section addr $sbat_end"
+        exit 1
+    else
+        echo "SizeOfImage $size_img >= $sbat_end is OK"
+    fi
+
+    objdump -h "$DST_PATH"
 
     echo -e '\n\n====================== SUCCESS ========================\n\n'