From 537710a69cf440250c27a59b7d01b5a5a1a9b462 Mon Sep 17 00:00:00 2001
From: Dmitry Selyutin <ghostmansd@gmail.com>
Date: Mon, 25 Jul 2022 16:10:20 +0300
Subject: ppc/svp64: support svindex instruction

https://libre-soc.org/openpower/sv/
https://libre-soc.org/openpower/sv/remap/#svindex
https://libre-soc.org/openpower/isa/simplev/
---
 opcodes/ppc-opc.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'opcodes/ppc-opc.c')

diff --git a/opcodes/ppc-opc.c b/opcodes/ppc-opc.c
index af67d6dce82..934b1bf4e85 100644
--- a/opcodes/ppc-opc.c
+++ b/opcodes/ppc-opc.c
@@ -3509,6 +3509,7 @@ const struct powerpc_operand powerpc_operands[] =
 #define TO TBR + 1
 #define DUI TO
 #define SVme TO
+#define SVG TO
 #define TO_MASK (0x1f << 21)
   { 0x1f, 21, NULL, NULL, 0 },
 
@@ -3556,6 +3557,7 @@ const struct powerpc_operand powerpc_operands[] =
   /* The UIMM field in a VX form instruction.  */
 #define UIMM SIMM + 1
 #define DCTL UIMM
+#define rmm UIMM
   { 0x1f, 16, NULL, NULL, 0 },
 
   /* The 3-bit UIMM field in a VX form instruction.  */
@@ -3648,6 +3650,7 @@ const struct powerpc_operand powerpc_operands[] =
   /* The RMC or CY field in a Z23 form instruction.  */
 #define RMC A_L + 1
 #define CY RMC
+#define ew RMC
   { 0x3, 9, NULL, NULL, 0 },
 
 #define R RMC + 1
@@ -3836,12 +3839,15 @@ const struct powerpc_operand powerpc_operands[] =
   { 0x3f, 9, NULL, NULL, PPC_OPERAND_NONZERO },
 
 #define vf SVi + 1
+#define sk vf
   { 0x1, 6, NULL, NULL, 0 },
 
 #define vs vf + 1
+#define mm vs
   { 0x1, 7, NULL, NULL, 0 },
 
 #define ms vs + 1
+#define yx ms
   { 0x1, 8, NULL, NULL, 0 },
 
 #define SVLcr ms + 1
@@ -3854,6 +3860,7 @@ const struct powerpc_operand powerpc_operands[] =
   { 0x1f, 16, NULL, NULL, PPC_OPERAND_NONZERO },
 
 #define SVzd SVyd + 1
+#define SVd SVzd
   { 0x1f, 11, NULL, NULL, PPC_OPERAND_NONZERO },
 
 #define SVrm SVzd + 1
@@ -4758,6 +4765,12 @@ const unsigned int num_powerpc_operands = (sizeof (powerpc_operands)
    | (((uint64_t)(xop)) & 0x3f))
 #define SVRM_MASK	SVRM (0x3f, 0x3f)
 
+/* An SVI form instruction. */
+#define SVI(op, xop)				\
+  (OP (op)					\
+   | (((uint64_t)(xop)) & 0x3f))
+#define SVI_MASK	SVI (0x3f, 0x3f)
+
 /* The BO encodings used in extended conditional branch mnemonics.  */
 #define BODNZF	(0x0)
 #define BODNZFP	(0x1)
@@ -6835,6 +6848,8 @@ const struct powerpc_opcode powerpc_opcodes[] = {
 {"setvl",	SVL(22,27,0),	SVL_MASK,	SVP64,	PPCVLE,	{RT, RA, SVi, vf, vs, ms}},
 {"setvl.",	SVL(22,27,1),	SVL_MASK,	SVP64,	PPCVLE,	{RT, RA, SVi, vf, vs, ms}},
 
+{"svindex",	SVI(22,41),	SVI_MASK,	SVP64,	PPCVLE,	{SVG, rmm, SVd, ew, yx, mm, sk}},
+
 {"svremap",	SVRM(22,57),	SVRM_MASK,	SVP64,	PPCVLE,	{SVme, mi0, mi1, mi2, mo0, mo1, pst}},
 
 {"rotlw",	MME(23,31,0),	MMBME_MASK,  PPCCOM,	PPCVLE|EXT,	{RA, RS, RB}},
-- 
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