From 8ca980966ca383c120dadb2c6e6a0850d1bfff58 Mon Sep 17 00:00:00 2001
From: Waldemar Celes <celes@tecgraf.puc-rio.br>
Date: Wed, 13 Apr 1994 18:37:20 -0300
Subject: Alteracao para retirar codificacao de NOP's, substituindo pela
 utilizacao de "union" com "chars" para codificar Word e float. Observa-se que
 foram realizados testes antes da alteracao e constatou-se que do bytecode
 anteriormente gerado, NOP representava de 10 a 13% do total de bytes do
 codigo. Esta percentagem chegava ate' a 20% na caso de descricao de metafile
 utilizando Lua.

---
 opcode.h | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

(limited to 'opcode.h')

diff --git a/opcode.h b/opcode.h
index 8139f9c8..f48e50fd 100644
--- a/opcode.h
+++ b/opcode.h
@@ -1,6 +1,6 @@
 /*
 ** TeCGraf - PUC-Rio
-** $Id: opcode.h,v 1.2 1993/12/22 21:15:16 roberto Exp roberto $
+** $Id: opcode.h,v 1.3 1994/02/13 20:35:53 roberto Exp celes $
 */
 
 #ifndef opcode_h
@@ -20,9 +20,20 @@ typedef unsigned char  Byte;
 
 typedef unsigned short Word;
 
+typedef union
+{
+ struct {char c1; char c2;} m;
+ Word w;
+} CodeWord;
+
+typedef union
+{
+ struct {char c1; char c2; char c3; char c4;} m;
+ float f;
+} CodeFloat;
+
 typedef enum 
 { 
- NOP,
  PUSHNIL,
  PUSH0, PUSH1, PUSH2,
  PUSHBYTE,
@@ -129,6 +140,11 @@ typedef struct
 #define s_fvalue(i)	(fvalue(&s_object(i)))
 #define s_uvalue(i)	(uvalue(&s_object(i)))
 
+#define get_word(code,pc)    {code.m.c1 = *pc++; code.m.c2 = *pc++;}
+#define get_float(code,pc)   {code.m.c1 = *pc++; code.m.c2 = *pc++;\
+                              code.m.c3 = *pc++; code.m.c4 = *pc++;}
+ 
+
 
 /* Exported functions */
 int     lua_execute   (Byte *pc);
-- 
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