diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 796ad455f8..04c64217b7 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -267,6 +267,11 @@ DEF_HELPER_3(vinsertb, void, avr, avr, i32)
 DEF_HELPER_3(vinserth, void, avr, avr, i32)
 DEF_HELPER_3(vinsertw, void, avr, avr, i32)
 DEF_HELPER_3(vinsertd, void, avr, avr, i32)
+DEF_HELPER_2(vextsb2w, void, avr, avr)
+DEF_HELPER_2(vextsh2w, void, avr, avr)
+DEF_HELPER_2(vextsb2d, void, avr, avr)
+DEF_HELPER_2(vextsh2d, void, avr, avr)
+DEF_HELPER_2(vextsw2d, void, avr, avr)
 DEF_HELPER_2(vupkhpx, void, avr, avr)
 DEF_HELPER_2(vupklpx, void, avr, avr)
 DEF_HELPER_2(vupkhsb, void, avr, avr)
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c
index 202854fabd..5aee0a81c7 100644
--- a/target-ppc/int_helper.c
+++ b/target-ppc/int_helper.c
@@ -1934,6 +1934,21 @@ VEXTRACT(uw, u32)
 VEXTRACT(d, u64)
 #undef VEXTRACT
 
+#define VEXT_SIGNED(name, element, mask, cast, recast)              \
+void helper_##name(ppc_avr_t *r, ppc_avr_t *b)                      \
+{                                                                   \
+    int i;                                                          \
+    VECTOR_FOR_INORDER_I(i, element) {                              \
+        r->element[i] = (recast)((cast)(b->element[i] & mask));     \
+    }                                                               \
+}
+VEXT_SIGNED(vextsb2w, s32, UINT8_MAX, int8_t, int32_t)
+VEXT_SIGNED(vextsb2d, s64, UINT8_MAX, int8_t, int64_t)
+VEXT_SIGNED(vextsh2w, s32, UINT16_MAX, int16_t, int32_t)
+VEXT_SIGNED(vextsh2d, s64, UINT16_MAX, int16_t, int64_t)
+VEXT_SIGNED(vextsw2d, s64, UINT32_MAX, int32_t, int64_t)
+#undef VEXT_SIGNED
+
 #define VSPLTI(suffix, element, splat_type)                     \
     void helper_vspltis##suffix(ppc_avr_t *r, uint32_t splat)   \
     {                                                           \
diff --git a/target-ppc/translate/vmx-impl.inc.c b/target-ppc/translate/vmx-impl.inc.c
index 25cd0735ac..c8998f3eab 100644
--- a/target-ppc/translate/vmx-impl.inc.c
+++ b/target-ppc/translate/vmx-impl.inc.c
@@ -815,6 +815,11 @@ GEN_VXFORM_NOA(vclzb, 1, 28)
 GEN_VXFORM_NOA(vclzh, 1, 29)
 GEN_VXFORM_NOA(vclzw, 1, 30)
 GEN_VXFORM_NOA(vclzd, 1, 31)
+GEN_VXFORM_NOA_2(vextsb2w, 1, 24, 16)
+GEN_VXFORM_NOA_2(vextsh2w, 1, 24, 17)
+GEN_VXFORM_NOA_2(vextsb2d, 1, 24, 24)
+GEN_VXFORM_NOA_2(vextsh2d, 1, 24, 25)
+GEN_VXFORM_NOA_2(vextsw2d, 1, 24, 26)
 GEN_VXFORM_NOA_2(vctzb, 1, 24, 28)
 GEN_VXFORM_NOA_2(vctzh, 1, 24, 29)
 GEN_VXFORM_NOA_2(vctzw, 1, 24, 30)
diff --git a/target-ppc/translate/vmx-ops.inc.c b/target-ppc/translate/vmx-ops.inc.c
index ac1dc9b2b2..68cba3e474 100644
--- a/target-ppc/translate/vmx-ops.inc.c
+++ b/target-ppc/translate/vmx-ops.inc.c
@@ -215,6 +215,11 @@ GEN_VXFORM_DUAL_INV(vspltish, vinserth, 6, 13, 0x00000000, 0x100000,
 GEN_VXFORM_DUAL_INV(vspltisw, vinsertw, 6, 14, 0x00000000, 0x100000,
                                                PPC_ALTIVEC),
 GEN_VXFORM_300_EXT(vinsertd, 6, 15, 0x100000),
+GEN_VXFORM_300_EO(vextsb2w, 0x01, 0x18, 0x10),
+GEN_VXFORM_300_EO(vextsh2w, 0x01, 0x18, 0x11),
+GEN_VXFORM_300_EO(vextsb2d, 0x01, 0x18, 0x18),
+GEN_VXFORM_300_EO(vextsh2d, 0x01, 0x18, 0x19),
+GEN_VXFORM_300_EO(vextsw2d, 0x01, 0x18, 0x1A),
 GEN_VXFORM_300_EO(vctzb, 0x01, 0x18, 0x1C),
 GEN_VXFORM_300_EO(vctzh, 0x01, 0x18, 0x1D),
 GEN_VXFORM_300_EO(vctzw, 0x01, 0x18, 0x1E),