From d8ab83e060bf9bb6b1d51915d63578a6dc8cacaf Mon Sep 17 00:00:00 2001
From: rodri <rgl@antares-labs.eu>
Date: Thu, 23 Nov 2023 16:50:05 +0000
Subject: add base VEX encoding definitions.

---
 sse.h | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/sse.h b/sse.h
index e8d92ea..b2ba3f4 100644
--- a/sse.h
+++ b/sse.h
@@ -15,15 +15,13 @@
 #define rX5	5
 #define rX6	6
 
-#define OP(o, m, ro, rm)	WORD $0x0F66;	/* op + modr/m byte */	\
-			BYTE $(o);					\
+#define OP(o, m, ro, rm)	WORD $0x0F66; BYTE $(o);	\
 			BYTE $(((m)<<6)|((ro)<<3)|(rm))
-#define OPi(o, m, ro, rm, i)	OP((o), (m), (ro), (rm));		\
+#define OPi(o, m, ro, rm, i)	OP((o), (m), (ro), (rm));	\
 			BYTE $(i)
-#define OP4(o, m, ro, rm)	WORD $0x0F66;				\
-			WORD $(o);					\
+#define OP4(o, m, ro, rm)	LONG $0x(o)0F66;		\
 			BYTE $(((m)<<6)|((ro)<<3)|(rm))
-#define OP4i(o, m, ro, rm, i)	OP4((o), (m), (ro), (rm));		\
+#define OP4i(o, m, ro, rm, i)	OP4((o), (m), (ro), (rm));	\
 			BYTE $(i)
 
 /* MOVLPD */
@@ -48,3 +46,21 @@
 //modrm  = 11 000 001 [X1 → X0]
 //imm8   = 0011 0001
 #define DPPD(s, d) OP4i(0x413A, 0x3, (d), (s), 0x31)
+
+
+#define VEX_m_0F	(1)
+#define VEX_m_0F38	(2)
+#define VEX_m_0F3A	(3)
+#define VEX_L_128	(0)
+#define VEX_L_256	(1)
+#define VEX_p_NO	(0)
+#define VEX_p_66	(1)
+#define VEX_p_F3	(2)
+#define VEX_p_F2	(3)
+
+#define VEX2(r, x, b, m, w, v, l, p)	BYTE $0xC5;			\
+				BYTE $(((~r)<<7)|((~x)<<6)|((~b)<<5)|(m));	\
+				BYTE $(((w)<<7)|((~v)<<3)|((l)<<2)|(p));
+
+#define VEX3(r, b, l, p)	BYTE $0xC4;	\
+			BYTE $(((~r)<<7)|((~v)<<3)|((l)<<2)|(p));
-- 
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