1 files changed, 15 insertions, 29 deletions

diff --git a/src/library.js b/src/library.js
index bb73c48a..d1ede6bc 100644
--- a/src/library.js
+++ b/src/library.js
@@ -367,12 +367,13 @@ LibraryManager.library = {
           return input.cache.shift();
         };
       }
+      var utf8 = new Runtime.UTF8Processor();
       function simpleOutput(val) {
         if (val === null || val === '\n'.charCodeAt(0)) {
           output.printer(output.buffer.join(''));
           output.buffer = [];
         } else {
-          output.buffer.push(String.fromCharCode(val));
+          output.buffer.push(utf8.processCChar(val));
         }
       }
       if (!output) {
@@ -2281,6 +2282,14 @@ LibraryManager.library = {
     var fields = 0;
     var argIndex = 0;
     var next;
+    // remove initial whitespace
+    while (1) {
+      next = get();
+      if (next == 0) return 0;
+      if (!(next in __scanString.whiteSpace)) break;
+    } 
+    unget(next);
+    next = 1;
     for (var formatIndex = 0; formatIndex < format.length; formatIndex++) {
       if (next <= 0) return fields;
       var next = get();
@@ -2319,11 +2328,10 @@ LibraryManager.library = {
             }
             next = get();
           }
+          unget(next);
           while (buffer.length > last) {
-            buffer.pop();
-            unget();
+            unget(buffer.pop().charCodeAt(0));
           }
-          unget();
           next = get();
         } else {
           var first = true;
@@ -2380,7 +2388,7 @@ LibraryManager.library = {
           next = get();
           if (next <= 0) return fields;  // End of input.
         }
-        unget();
+        unget(next);
       } else {
         // Not a specifier.
         if (format[formatIndex].charCodeAt(0) !== next) {
@@ -4519,33 +4527,11 @@ LibraryManager.library = {
   },
 
   llvm_bswap_i16: function(x) {
-    x = unSign(x, 32);
-    var bytes = [];
-    bytes[0] = x & 255;
-    x >>= 8;
-    bytes[1] = x & 255;
-    x >>= 8;
-    var ret = 0;
-    ret <<= 8;
-    ret += bytes[0];
-    ret <<= 8;
-    ret += bytes[1];
-    return ret;
+    return ((x&0xff)<<8) | ((x>>8)&0xff);
   },
 
   llvm_bswap_i32: function(x) {
-    x = unSign(x, 32);
-    var bytes = [];
-    for (var i = 0; i < 4; i++) {
-      bytes[i] = x & 255;
-      x >>= 8;
-    }
-    var ret = 0;
-    for (i = 0; i < 4; i++) {
-      ret <<= 8;
-      ret += bytes[i];
-    }
-    return ret;
+    return ((x&0xff)<<24) | (((x>>8)&0xff)<<16) | (((x>>16)&0xff)<<8) | (x>>>24);
   },
 
   llvm_ctlz_i32: function(x) {