From c37778ea5d3c4f79e94266f0817b586538824696 Mon Sep 17 00:00:00 2001
From: Dmitry Selyutin <ghostmansd@gmail.com>
Date: Mon, 29 May 2023 01:04:57 +0300
Subject: [PATCH] ppc/svp64: disassemble ld/st imm mode

---
 opcodes/ppc-svp64-dis.c | 101 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

diff --git a/opcodes/ppc-svp64-dis.c b/opcodes/ppc-svp64-dis.c
index d3c5b843408..137bdda4cdd 100644
--- a/opcodes/ppc-svp64-dis.c
+++ b/opcodes/ppc-svp64-dis.c
@@ -376,6 +376,14 @@ svp64_spec_width (const struct svp64_ctx *svp64,
   return len;
 }
 
+static size_t
+svp64_spec_els (struct disassemble_info *info, bool els)
+{
+  if (els)
+    return svp64_spec_printf (info, "els");
+  return 0;
+}
+
 static size_t
 svp64_spec_normal (const struct svp64_ctx *svp64,
   struct disassemble_info *info)
@@ -462,6 +470,91 @@ svp64_spec_normal_sat (const struct svp64_ctx *svp64,
   return len;
 }
 
+static size_t
+svp64_spec_ldst_imm (const struct svp64_ctx *svp64,
+  struct disassemble_info *info)
+{
+  size_t len = 0;
+
+  len += svp64_spec_width (svp64, info);
+  len += svp64_spec_mask (svp64, info);
+  len += svp64_spec_vec (svp64, info);
+
+  return len;
+}
+
+static size_t
+svp64_spec_ldst_imm_simple (const struct svp64_ctx *svp64,
+  struct disassemble_info *info)
+{
+  size_t len = 0;
+  uint64_t zz = svp64_insn_get_prefix_rm_ldst_imm_simple_zz (&svp64->insn);
+  uint64_t els = svp64_insn_get_prefix_rm_ldst_imm_simple_els (&svp64->insn);
+
+  len += svp64_spec_dz_sz_zz (info, zz, zz);
+  len += svp64_spec_els (info, els);
+  len += svp64_spec_ldst_imm (svp64, info);
+
+  return len;
+}
+
+static size_t
+svp64_spec_ldst_imm_rsvd (const struct svp64_ctx *svp64,
+  struct disassemble_info *info)
+{
+  (void)svp64;
+  (void)info;
+
+  return 0;
+}
+
+static size_t
+svp64_spec_ldst_imm_ffrc1 (const struct svp64_ctx *svp64,
+  struct disassemble_info *info)
+{
+  size_t len = 0;
+  uint64_t inv = svp64_insn_get_prefix_rm_ldst_imm_ffrc1_inv (&svp64->insn);
+  uint64_t CR = svp64_insn_get_prefix_rm_ldst_imm_ffrc1_CR (&svp64->insn);
+
+  len += svp64_spec_ffrc1 (info, inv, CR);
+  len += svp64_spec_ldst_imm (svp64, info);
+
+  return len;
+}
+
+static size_t
+svp64_spec_ldst_imm_ffrc0 (const struct svp64_ctx *svp64,
+  struct disassemble_info *info)
+{
+  size_t len = 0;
+  uint64_t inv = svp64_insn_get_prefix_rm_ldst_imm_ffrc0_inv (&svp64->insn);
+  uint64_t els = svp64_insn_get_prefix_rm_ldst_imm_ffrc0_els (&svp64->insn);
+  uint64_t RC1 = svp64_insn_get_prefix_rm_ldst_imm_ffrc0_RC1 (&svp64->insn);
+
+  len += svp64_spec_ffrc0 (info, inv, RC1);
+  len += svp64_spec_els (info, els);
+  len += svp64_spec_ldst_imm (svp64, info);
+
+  return len;
+}
+
+static size_t
+svp64_spec_ldst_imm_sat (const struct svp64_ctx *svp64,
+  struct disassemble_info *info)
+{
+  size_t len = 0;
+  uint64_t N = svp64_insn_get_prefix_rm_ldst_imm_sat_N (&svp64->insn);
+  uint64_t zz = svp64_insn_get_prefix_rm_ldst_imm_sat_zz (&svp64->insn);
+  uint64_t els = svp64_insn_get_prefix_rm_ldst_imm_sat_els (&svp64->insn);
+
+  len += svp64_spec_sat (info, N);
+  len += svp64_spec_dz_sz_zz (info, zz, zz);
+  len += svp64_spec_els (info, els);
+  len += svp64_spec_normal (svp64, info);
+
+  return len;
+}
+
 static size_t
 svp64_print_spec (const struct svp64_ctx *svp64,
   struct disassemble_info *info)
@@ -475,8 +568,16 @@ svp64_print_spec (const struct svp64_ctx *svp64,
     {0x10, 0x31, svp64_spec_normal_ffrc0},    /* ffirst,     Rc=0    */
     {0x20, 0x30, svp64_spec_normal_sat},      /* saturation (no Rc)  */
   };
+  static const struct svp64_spec_subtable ldst_imm[] = {
+    {0x00, 0x38, svp64_spec_ldst_imm_simple}, /* simple     (no Rc)  */
+    {0x08, 0x38, svp64_spec_ldst_imm_rsvd},   /* rsvd       (no Rc)  */
+    {0x11, 0x31, svp64_spec_ldst_imm_ffrc1},  /* ffirst,     Rc=1    */
+    {0x10, 0x31, svp64_spec_ldst_imm_ffrc0},  /* ffirst,     Rc=0    */
+    {0x20, 0x30, svp64_spec_ldst_imm_sat},    /* saturation (no Rc)  */
+  };
   static const struct svp64_spec_table tables[] = {
     [SVP64_MODE_NORMAL] = {normal, ARRAY_SIZE (normal)},
+    [SVP64_MODE_LDST_IMM] = {ldst_imm, ARRAY_SIZE (ldst_imm)},
   };
   const struct svp64_spec_table *table = &tables[svp64->desc->mode];
   uint64_t mode = svp64_insn_get_prefix_rm_mode (&svp64->insn);
-- 
2.30.2