fixed invalid code generation of (movl k0 (disp k1 k2)) which is

invalid in X86_64.

scheme/ikarus.compiler.altcogen.ss

@@ -2337,28 +2337,20 @@
                    (E (make-asm-instr 'move u b))
                    (E (make-asm-instr op a u))))]
               [else
-               (let ([s1 (disp-s0 a)] [s2 (disp-s1 a)])
+               (check-disp a
+                 (lambda (a)
+                   (let ([s0 (disp-s0 a)] [s1 (disp-s1 a)])
                      (cond
-                   [(and (mem? s1) (mem? s2))
+                       [(and (constant? s0) (constant? s1))
                         (let ([u (mku)])
                           (make-seq
                             (make-seq
-                          (E (make-asm-instr 'move u s1))
-                          (E (make-asm-instr 'int+ u s2)))
+                              (E (make-asm-instr 'move u s0))
+                              (E (make-asm-instr 'int+ u s1)))
                             (make-asm-instr op 
                                (make-disp u (make-constant 0))
                                b)))]
-                   [(mem? s1)
-                    (let ([u (mku)])
-                      (make-seq
-                        (E (make-asm-instr 'move u s1))
-                        (E (make-asm-instr op (make-disp u s2) b))))]
-                   [(mem? s2)
-                    (let ([u (mku)])
-                      (make-seq
-                        (E (make-asm-instr 'move u s2))
-                        (E (make-asm-instr op (make-disp u s1) b))))]
-                   [else x]))])]
+                       [else (make-asm-instr op a b)]))))])]
            [(fl:load fl:store fl:add! fl:sub! fl:mul! fl:div!
              fl:load-single fl:store-single) 
             (check-disp-arg a

scheme/ikarus.intel-assembler.ss

@@ -554,8 +554,8 @@
   (CODE c0 (CODE c1 (IMM32 i32 ac))))
 
 
-(define (dotrace orig ls)
-  (printf "TRACE: ~s\n" 
+(define (dotrace instr orig ls)
+  (printf "TRACE: ~s ~s\n" instr 
     (let f ([ls ls])
       (if (eq? ls orig)
           '()

scheme/ikarus.io.ss

@@ -139,6 +139,7 @@
 
       open-directory-stream directory-stream?  
       read-directory-stream close-directory-stream
+      process*
       ))
 
   ;(define-syntax assert* (identifier-syntax assert))

scheme/last-revision

@@ -1 +1 @@
-1853
+1855

scheme/x86-64-repl.ss

@@ -50,7 +50,7 @@
         (put-u8 p b))
       (append stub1 (mkstub2 (length ls)) stub3 ls))
     (close-output-port p))
-  (system "otool64 -tv tmp.o"))
+  (system "otool -tv tmp.o"))
 
 (printf "Trying a simple sequence ...\n")