diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
index 77f68e9dcd..4da83d9272 100644
--- a/target/ppc/fpu_helper.c
+++ b/target/ppc/fpu_helper.c
@@ -3026,3 +3026,23 @@ void helper_##op(CPUPPCState *env, uint32_t opcode)                   \
 
 VSX_XXPERM(xxperm, 0)
 VSX_XXPERM(xxpermr, 1)
+
+void helper_xvxsigsp(CPUPPCState *env, uint32_t opcode)
+{
+    ppc_vsr_t xt, xb;
+    uint32_t exp, i, fraction;
+
+    getVSR(xB(opcode), &xb, env);
+    memset(&xt, 0, sizeof(xt));
+
+    for (i = 0; i < 4; i++) {
+        exp = (xb.VsrW(i) >> 23) & 0xFF;
+        fraction = xb.VsrW(i) & 0x7FFFFF;
+        if (exp != 0 && exp != 255) {
+            xt.VsrW(i) = fraction | 0x00800000;
+        } else {
+            xt.VsrW(i) = fraction;
+        }
+    }
+    putVSR(xT(opcode), &xt, env);
+}
diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index 3cac050134..ae14da4ba6 100644
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -545,6 +545,7 @@ DEF_HELPER_2(xxperm, void, env, i32)
 DEF_HELPER_2(xxpermr, void, env, i32)
 DEF_HELPER_4(xxextractuw, void, env, tl, tl, i32)
 DEF_HELPER_4(xxinsertw, void, env, tl, tl, i32)
+DEF_HELPER_2(xvxsigsp, void, env, i32)
 
 DEF_HELPER_2(efscfsi, i32, env, i32)
 DEF_HELPER_2(efscfui, i32, env, i32)
diff --git a/target/ppc/translate/vsx-impl.inc.c b/target/ppc/translate/vsx-impl.inc.c
index 7b26f75db8..4e57af7726 100644
--- a/target/ppc/translate/vsx-impl.inc.c
+++ b/target/ppc/translate/vsx-impl.inc.c
@@ -1430,6 +1430,8 @@ static void gen_xvxexpdp(DisasContext *ctx)
     tcg_gen_andi_i64(xtl, xtl, 0x7FF);
 }
 
+GEN_VSX_HELPER_2(xvxsigsp, 0x00, 0x04, 0, PPC2_ISA300)
+
 #undef GEN_XX2FORM
 #undef GEN_XX3FORM
 #undef GEN_XX2IFORM
diff --git a/target/ppc/translate/vsx-ops.inc.c b/target/ppc/translate/vsx-ops.inc.c
index a3061cee60..2c4f641ab4 100644
--- a/target/ppc/translate/vsx-ops.inc.c
+++ b/target/ppc/translate/vsx-ops.inc.c
@@ -128,6 +128,7 @@ GEN_XX3FORM(xviexpsp, 0x00, 0x1B, PPC2_ISA300),
 GEN_XX3FORM(xviexpdp, 0x00, 0x1F, PPC2_ISA300),
 GEN_XX2FORM_EO(xvxexpdp, 0x16, 0x1D, 0x00, PPC2_ISA300),
 GEN_XX2FORM_EO(xvxexpsp, 0x16, 0x1D, 0x08, PPC2_ISA300),
+GEN_XX2FORM_EO(xvxsigsp, 0x16, 0x1D, 0x09, PPC2_ISA300),
 
 GEN_XX2FORM(xvabsdp, 0x12, 0x1D, PPC2_VSX),
 GEN_XX2FORM(xvnabsdp, 0x12, 0x1E, PPC2_VSX),