diff ppc/test/foo.p @ 0:bfdcc3820b32

Basis
author Mike Spivey <mike@cs.ox.ac.uk>
date Thu, 05 Oct 2017 08:04:15 +0100
parents
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ppc/test/foo.p	Thu Oct 05 08:04:15 2017 +0100
@@ -0,0 +1,99 @@
+(* foo.p *)
+
+proc gcd(u, v: integer): integer;
+  var x, y: integer;
+begin
+  x := u; y := v;
+  while x <> y do
+    if x < y then
+      y := y - x
+    else
+      x := x - y
+    end
+  end;
+  return x
+end;
+  
+var z: integer;
+begin
+  z := gcd(3*37, 5*37);
+  print_string("The final answer is calculated as ");
+  print_num(z); newline()
+end.
+
+(*<<
+The final answer is calculated as 37
+>>*)
+
+(*[[
+MODULE Main 0 0
+IMPORT Lib 0
+ENDHDR
+
+PROC _gcd 8 0 0
+!   x := u; y := v;
+LDLW 16
+STLW -4
+LDLW 20
+STLW -8
+!   while x <> y do
+JUMP L3
+LABEL L2
+!     if x < y then
+LDLW -4
+LDLW -8
+JGEQ L6
+!       y := y - x
+LDLW -8
+LDLW -4
+MINUS
+STLW -8
+JUMP L3
+LABEL L6
+!       x := x - y
+LDLW -4
+LDLW -8
+MINUS
+STLW -4
+LABEL L3
+LDLW -4
+LDLW -8
+JNEQ L2
+!   return x
+LDLW -4
+RETURNW
+END
+
+PROC MAIN 0 0 0
+!   z := gcd(3*37, 5*37);
+CONST 185
+CONST 111
+CONST 0
+GLOBAL _gcd
+PCALLW 2
+STGW _z
+!   print_string("The final answer is calculated as ");
+CONST 34
+GLOBAL g1
+CONST 0
+GLOBAL lib.print_string
+PCALL 2
+!   print_num(z); newline()
+LDGW _z
+CONST 0
+GLOBAL lib.print_num
+PCALL 1
+CONST 0
+GLOBAL lib.newline
+PCALL 0
+RETURN
+END
+
+GLOVAR _z 4
+! String "The final answer is calculated as "
+DEFINE g1
+STRING 5468652066696E616C20616E737765722069732063616C63756C617465642061
+STRING 732000
+
+! End
+]]*)