make plain old gcc -o foo foo.c work

[nestedvm.git] / src / org / ibex / nestedvm / Compiler.java

diff --git a/src/org/ibex/nestedvm/Compiler.java b/src/org/ibex/nestedvm/Compiler.java
index de5a048..ebdf29d 100644 (file)
--- a/src/org/ibex/nestedvm/Compiler.java
+++ b/src/org/ibex/nestedvm/Compiler.java
@@ -7,6 +7,8 @@ import java.io.*;
 
 import org.ibex.nestedvm.util.*;
 
+// FEATURE: -d option for classfilecompiler (just like javac's -d)
+
 public abstract class Compiler implements Registers {    
     /** The ELF binary being read */
     protected ELF elf;
@@ -48,8 +50,6 @@ public abstract class Compiler implements Registers {
     
     protected boolean assumeTailCalls = true;
     
-    protected boolean optimizedMemcpy = true;
-    
     // True to insert some code in the output to help diagnore compiler problems
     protected boolean debugCompiler = false;
     
@@ -77,20 +77,11 @@ public abstract class Compiler implements Registers {
     protected boolean onePage;
     
     protected void pageSizeInit() throws Exn {
-        try {
-            Runtime.checkPageSize(pageSize,totalPages);
-        } catch(IllegalArgumentException e) {
-            throw new Exn(e.getMessage());
-        }
+        if((pageSize&(pageSize-1)) != 0) throw new Exn("pageSize not a multiple of two");
+        if((totalPages&(totalPages-1)) != 0) throw new Exn("totalPages not a multiple of two");
         while(pageSize>>>pageShift != 1) pageShift++;
     }
     
-    /** The address of the memcpy function in the binary (used for optimizedMemcpy) */
-    protected int memcpy;
-
-    /** The address of the memset function in the binary (used for optimizedMemcpy) */
-    protected int memset;
-    
     /** A set of all addresses that can be jumped too (only available if pruneCases == true) */
     protected Set jumpableAddresses;
     
@@ -214,13 +205,6 @@ public abstract class Compiler implements Registers {
         if(symtab == null) throw new Exn("Binary has no symtab (did you strip it?)");
         ELF.Symbol sym;
         
-        // Check for some functions we can override
-        sym = symtab.getGlobalSymbol("memcpy");
-        memcpy = sym == null ? -1 : sym.addr;
-        
-        sym = symtab.getGlobalSymbol("memset");
-        memset = sym == null ? -1 : sym.addr;
-        
         userInfo = symtab.getGlobalSymbol("user_info");
         gp = symtab.getGlobalSymbol("_gp");
         if(gp == null) throw new Exn("no _gp symbol (did you strip the binary?)");