From 99948b601b25ff830be84fca0c3da9d605abb061 Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Sat, 8 Apr 2023 14:50:39 +0200
Subject: [PATCH] Added 66 0F 38 07 opcode ([ARM64_DYNAREC] too)

---
 src/dynarec/arm64/dynarec_arm64_660f.c | 22 +++++++++++++++++++++-
 src/emu/x64run660f.c                   | 18 +++++++++++++++++-
 2 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/src/dynarec/arm64/dynarec_arm64_660f.c b/src/dynarec/arm64/dynarec_arm64_660f.c
index dadb78b3..c32c35e7 100755
--- a/src/dynarec/arm64/dynarec_arm64_660f.c
+++ b/src/dynarec/arm64/dynarec_arm64_660f.c
@@ -298,7 +298,27 @@ uintptr_t dynarec64_660F(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int n
                     }
                     VADDPQ_32(q0, q0, v0);
                     break;
-
+                case 0x07:
+                    INST_NAME("PHSUBSW Gx, Ex");
+                    nextop = F8;
+                    GETGX(q0, 1);
+                    GETEX(q1, 0, 0);
+                    v0 = fpu_get_scratch(dyn);
+                    VTRNQ2_16(v0, q0, q0);  // v0 have all odd elements (in double)
+                    NEGQ_16(v0, v0);
+                    VTRNQ1_16(q0, q0, v0);  // re-inject negged element to q0
+                    SADDLPQ_16(q0, q0);      // there is no Add Pair with saturation...
+                    SQXTN_16(q0, q0);
+                    if(q0!=q1) {
+                        VTRNQ2_16(v0, q1, q1);
+                        NEGQ_16(v0, v0);
+                        VTRNQ1_16(v0, q1, v0);
+                        SADDLPQ_16(v0, v0);
+                        SQXTN2_16(q0, v0);
+                    } else {
+                        VMOVeD(q0, 1, q0, 0);
+                    }
+                    break;
                 case 0x08:
                     INST_NAME("PSIGNB Gx, Ex");
                     nextop = F8;
diff --git a/src/emu/x64run660f.c b/src/emu/x64run660f.c
index a0f7f6ae..29f36fcd 100644
--- a/src/emu/x64run660f.c
+++ b/src/emu/x64run660f.c
@@ -357,7 +357,23 @@ uintptr_t Run660F(x64emu_t *emu, rex_t rex, uintptr_t addr)
                         GX->sd[2+i] = EX->sd[i*2+0] - EX->sd[i*2+1];
                 }
                 break;
-
+            case 0x07:  /* PHSUBSW Gx, Ex */
+                nextop = F8;
+                GETEX(0);
+                GETGX;
+                for (int i=0; i<4; ++i) {
+                    tmp32s = GX->sw[i*2+0] - GX->sw[i*2+1];
+                    GX->sw[i] = (tmp32s<-32768)?-32768:((tmp32s>32767)?32767:tmp32s);
+                }
+                if(GX == EX) {
+                    GX->q[1] = GX->q[0];
+                } else {
+                    for (int i=0; i<4; ++i) {
+                        tmp32s = EX->sw[i*2+0] - EX->sw[i*2+1];
+                        GX->sw[4+i] = (tmp32s<-32768)?-32768:((tmp32s>32767)?32767:tmp32s);
+                    }
+                }
+                break;
             case 0x08:  /* PSIGNB Gx, Ex */
                 nextop = F8;
                 GETEX(0);