From b05c449dd0460deb4d2007cd24cb03c82db2ebaf Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Fri, 9 Jul 2021 21:31:50 +0200
Subject: Added F3 0F B8 opcode (for #33)

---
 src/emu/x64runf30f.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src/emu')

diff --git a/src/emu/x64runf30f.c b/src/emu/x64runf30f.c
index a85a85e7..a5e02d59 100644
--- a/src/emu/x64runf30f.c
+++ b/src/emu/x64runf30f.c
@@ -238,6 +238,24 @@ int RunF30F(x64emu_t *emu, rex_t rex)
         memcpy(EX, GX, 16);    // unaligned...
         break;
 
+    case 0xB8:  /* POPCNT Gd,Ed */
+        nextop = F8;
+        GETED(0);
+        GETGD;
+        if(rex.w)
+            GD->q[0] = __builtin_popcountl(ED->q[0]);
+        else
+            GD->q[0] = __builtin_popcount(ED->dword[0]);
+        RESET_FLAGS(emu);
+        CLEAR_FLAG(F_OF);
+        CLEAR_FLAG(F_SF);
+        CLEAR_FLAG(F_ZF);
+        CLEAR_FLAG(F_AF);
+        CLEAR_FLAG(F_CF);
+        CLEAR_FLAG(F_PF);
+        CONDITIONAL_SET_FLAG(GD->q[0]==0, F_ZF);
+        break;
+
     case 0xBC:  /* TZCNT Ed,Gd */
         CHECK_FLAGS(emu);
         nextop = F8;
-- 
cgit 1.4.1