diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 9613654..aca712f 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -310,6 +310,7 @@ DEF_HELPER_2(vpopcnth, void, avr, avr)
 DEF_HELPER_2(vpopcntw, void, avr, avr)
 DEF_HELPER_2(vpopcntd, void, avr, avr)
 DEF_HELPER_3(vbpermq, void, avr, avr, avr)
+DEF_HELPER_2(vgbbd, void, avr, avr)
 
 DEF_HELPER_2(xsadddp, void, env, i32)
 DEF_HELPER_2(xssubdp, void, env, i32)
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c
index 27a34c0..cd0b88a 100644
--- a/target-ppc/int_helper.c
+++ b/target-ppc/int_helper.c
@@ -1075,6 +1075,282 @@ void helper_vbpermq(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
 #undef VBPERMQ_INDEX
 #undef VBPERMQ_DW
 
+uint64_t VGBBD_MASKS[256] = {
+    0x0000000000000000ull, /* 00 */
+    0x0000000000000080ull, /* 01 */
+    0x0000000000008000ull, /* 02 */
+    0x0000000000008080ull, /* 03 */
+    0x0000000000800000ull, /* 04 */
+    0x0000000000800080ull, /* 05 */
+    0x0000000000808000ull, /* 06 */
+    0x0000000000808080ull, /* 07 */
+    0x0000000080000000ull, /* 08 */
+    0x0000000080000080ull, /* 09 */
+    0x0000000080008000ull, /* 0A */
+    0x0000000080008080ull, /* 0B */
+    0x0000000080800000ull, /* 0C */
+    0x0000000080800080ull, /* 0D */
+    0x0000000080808000ull, /* 0E */
+    0x0000000080808080ull, /* 0F */
+    0x0000008000000000ull, /* 10 */
+    0x0000008000000080ull, /* 11 */
+    0x0000008000008000ull, /* 12 */
+    0x0000008000008080ull, /* 13 */
+    0x0000008000800000ull, /* 14 */
+    0x0000008000800080ull, /* 15 */
+    0x0000008000808000ull, /* 16 */
+    0x0000008000808080ull, /* 17 */
+    0x0000008080000000ull, /* 18 */
+    0x0000008080000080ull, /* 19 */
+    0x0000008080008000ull, /* 1A */
+    0x0000008080008080ull, /* 1B */
+    0x0000008080800000ull, /* 1C */
+    0x0000008080800080ull, /* 1D */
+    0x0000008080808000ull, /* 1E */
+    0x0000008080808080ull, /* 1F */
+    0x0000800000000000ull, /* 20 */
+    0x0000800000000080ull, /* 21 */
+    0x0000800000008000ull, /* 22 */
+    0x0000800000008080ull, /* 23 */
+    0x0000800000800000ull, /* 24 */
+    0x0000800000800080ull, /* 25 */
+    0x0000800000808000ull, /* 26 */
+    0x0000800000808080ull, /* 27 */
+    0x0000800080000000ull, /* 28 */
+    0x0000800080000080ull, /* 29 */
+    0x0000800080008000ull, /* 2A */
+    0x0000800080008080ull, /* 2B */
+    0x0000800080800000ull, /* 2C */
+    0x0000800080800080ull, /* 2D */
+    0x0000800080808000ull, /* 2E */
+    0x0000800080808080ull, /* 2F */
+    0x0000808000000000ull, /* 30 */
+    0x0000808000000080ull, /* 31 */
+    0x0000808000008000ull, /* 32 */
+    0x0000808000008080ull, /* 33 */
+    0x0000808000800000ull, /* 34 */
+    0x0000808000800080ull, /* 35 */
+    0x0000808000808000ull, /* 36 */
+    0x0000808000808080ull, /* 37 */
+    0x0000808080000000ull, /* 38 */
+    0x0000808080000080ull, /* 39 */
+    0x0000808080008000ull, /* 3A */
+    0x0000808080008080ull, /* 3B */
+    0x0000808080800000ull, /* 3C */
+    0x0000808080800080ull, /* 3D */
+    0x0000808080808000ull, /* 3E */
+    0x0000808080808080ull, /* 3F */
+    0x0080000000000000ull, /* 40 */
+    0x0080000000000080ull, /* 41 */
+    0x0080000000008000ull, /* 42 */
+    0x0080000000008080ull, /* 43 */
+    0x0080000000800000ull, /* 44 */
+    0x0080000000800080ull, /* 45 */
+    0x0080000000808000ull, /* 46 */
+    0x0080000000808080ull, /* 47 */
+    0x0080000080000000ull, /* 48 */
+    0x0080000080000080ull, /* 49 */
+    0x0080000080008000ull, /* 4A */
+    0x0080000080008080ull, /* 4B */
+    0x0080000080800000ull, /* 4C */
+    0x0080000080800080ull, /* 4D */
+    0x0080000080808000ull, /* 4E */
+    0x0080000080808080ull, /* 4F */
+    0x0080008000000000ull, /* 50 */
+    0x0080008000000080ull, /* 51 */
+    0x0080008000008000ull, /* 52 */
+    0x0080008000008080ull, /* 53 */
+    0x0080008000800000ull, /* 54 */
+    0x0080008000800080ull, /* 55 */
+    0x0080008000808000ull, /* 56 */
+    0x0080008000808080ull, /* 57 */
+    0x0080008080000000ull, /* 58 */
+    0x0080008080000080ull, /* 59 */
+    0x0080008080008000ull, /* 5A */
+    0x0080008080008080ull, /* 5B */
+    0x0080008080800000ull, /* 5C */
+    0x0080008080800080ull, /* 5D */
+    0x0080008080808000ull, /* 5E */
+    0x0080008080808080ull, /* 5F */
+    0x0080800000000000ull, /* 60 */
+    0x0080800000000080ull, /* 61 */
+    0x0080800000008000ull, /* 62 */
+    0x0080800000008080ull, /* 63 */
+    0x0080800000800000ull, /* 64 */
+    0x0080800000800080ull, /* 65 */
+    0x0080800000808000ull, /* 66 */
+    0x0080800000808080ull, /* 67 */
+    0x0080800080000000ull, /* 68 */
+    0x0080800080000080ull, /* 69 */
+    0x0080800080008000ull, /* 6A */
+    0x0080800080008080ull, /* 6B */
+    0x0080800080800000ull, /* 6C */
+    0x0080800080800080ull, /* 6D */
+    0x0080800080808000ull, /* 6E */
+    0x0080800080808080ull, /* 6F */
+    0x0080808000000000ull, /* 70 */
+    0x0080808000000080ull, /* 71 */
+    0x0080808000008000ull, /* 72 */
+    0x0080808000008080ull, /* 73 */
+    0x0080808000800000ull, /* 74 */
+    0x0080808000800080ull, /* 75 */
+    0x0080808000808000ull, /* 76 */
+    0x0080808000808080ull, /* 77 */
+    0x0080808080000000ull, /* 78 */
+    0x0080808080000080ull, /* 79 */
+    0x0080808080008000ull, /* 7A */
+    0x0080808080008080ull, /* 7B */
+    0x0080808080800000ull, /* 7C */
+    0x0080808080800080ull, /* 7D */
+    0x0080808080808000ull, /* 7E */
+    0x0080808080808080ull, /* 7F */
+    0x8000000000000000ull, /* 80 */
+    0x8000000000000080ull, /* 81 */
+    0x8000000000008000ull, /* 82 */
+    0x8000000000008080ull, /* 83 */
+    0x8000000000800000ull, /* 84 */
+    0x8000000000800080ull, /* 85 */
+    0x8000000000808000ull, /* 86 */
+    0x8000000000808080ull, /* 87 */
+    0x8000000080000000ull, /* 88 */
+    0x8000000080000080ull, /* 89 */
+    0x8000000080008000ull, /* 8A */
+    0x8000000080008080ull, /* 8B */
+    0x8000000080800000ull, /* 8C */
+    0x8000000080800080ull, /* 8D */
+    0x8000000080808000ull, /* 8E */
+    0x8000000080808080ull, /* 8F */
+    0x8000008000000000ull, /* 90 */
+    0x8000008000000080ull, /* 91 */
+    0x8000008000008000ull, /* 92 */
+    0x8000008000008080ull, /* 93 */
+    0x8000008000800000ull, /* 94 */
+    0x8000008000800080ull, /* 95 */
+    0x8000008000808000ull, /* 96 */
+    0x8000008000808080ull, /* 97 */
+    0x8000008080000000ull, /* 98 */
+    0x8000008080000080ull, /* 99 */
+    0x8000008080008000ull, /* 9A */
+    0x8000008080008080ull, /* 9B */
+    0x8000008080800000ull, /* 9C */
+    0x8000008080800080ull, /* 9D */
+    0x8000008080808000ull, /* 9E */
+    0x8000008080808080ull, /* 9F */
+    0x8000800000000000ull, /* A0 */
+    0x8000800000000080ull, /* A1 */
+    0x8000800000008000ull, /* A2 */
+    0x8000800000008080ull, /* A3 */
+    0x8000800000800000ull, /* A4 */
+    0x8000800000800080ull, /* A5 */
+    0x8000800000808000ull, /* A6 */
+    0x8000800000808080ull, /* A7 */
+    0x8000800080000000ull, /* A8 */
+    0x8000800080000080ull, /* A9 */
+    0x8000800080008000ull, /* AA */
+    0x8000800080008080ull, /* AB */
+    0x8000800080800000ull, /* AC */
+    0x8000800080800080ull, /* AD */
+    0x8000800080808000ull, /* AE */
+    0x8000800080808080ull, /* AF */
+    0x8000808000000000ull, /* B0 */
+    0x8000808000000080ull, /* B1 */
+    0x8000808000008000ull, /* B2 */
+    0x8000808000008080ull, /* B3 */
+    0x8000808000800000ull, /* B4 */
+    0x8000808000800080ull, /* B5 */
+    0x8000808000808000ull, /* B6 */
+    0x8000808000808080ull, /* B7 */
+    0x8000808080000000ull, /* B8 */
+    0x8000808080000080ull, /* B9 */
+    0x8000808080008000ull, /* BA */
+    0x8000808080008080ull, /* BB */
+    0x8000808080800000ull, /* BC */
+    0x8000808080800080ull, /* BD */
+    0x8000808080808000ull, /* BE */
+    0x8000808080808080ull, /* BF */
+    0x8080000000000000ull, /* C0 */
+    0x8080000000000080ull, /* C1 */
+    0x8080000000008000ull, /* C2 */
+    0x8080000000008080ull, /* C3 */
+    0x8080000000800000ull, /* C4 */
+    0x8080000000800080ull, /* C5 */
+    0x8080000000808000ull, /* C6 */
+    0x8080000000808080ull, /* C7 */
+    0x8080000080000000ull, /* C8 */
+    0x8080000080000080ull, /* C9 */
+    0x8080000080008000ull, /* CA */
+    0x8080000080008080ull, /* CB */
+    0x8080000080800000ull, /* CC */
+    0x8080000080800080ull, /* CD */
+    0x8080000080808000ull, /* CE */
+    0x8080000080808080ull, /* CF */
+    0x8080008000000000ull, /* D0 */
+    0x8080008000000080ull, /* D1 */
+    0x8080008000008000ull, /* D2 */
+    0x8080008000008080ull, /* D3 */
+    0x8080008000800000ull, /* D4 */
+    0x8080008000800080ull, /* D5 */
+    0x8080008000808000ull, /* D6 */
+    0x8080008000808080ull, /* D7 */
+    0x8080008080000000ull, /* D8 */
+    0x8080008080000080ull, /* D9 */
+    0x8080008080008000ull, /* DA */
+    0x8080008080008080ull, /* DB */
+    0x8080008080800000ull, /* DC */
+    0x8080008080800080ull, /* DD */
+    0x8080008080808000ull, /* DE */
+    0x8080008080808080ull, /* DF */
+    0x8080800000000000ull, /* E0 */
+    0x8080800000000080ull, /* E1 */
+    0x8080800000008000ull, /* E2 */
+    0x8080800000008080ull, /* E3 */
+    0x8080800000800000ull, /* E4 */
+    0x8080800000800080ull, /* E5 */
+    0x8080800000808000ull, /* E6 */
+    0x8080800000808080ull, /* E7 */
+    0x8080800080000000ull, /* E8 */
+    0x8080800080000080ull, /* E9 */
+    0x8080800080008000ull, /* EA */
+    0x8080800080008080ull, /* EB */
+    0x8080800080800000ull, /* EC */
+    0x8080800080800080ull, /* ED */
+    0x8080800080808000ull, /* EE */
+    0x8080800080808080ull, /* EF */
+    0x8080808000000000ull, /* F0 */
+    0x8080808000000080ull, /* F1 */
+    0x8080808000008000ull, /* F2 */
+    0x8080808000008080ull, /* F3 */
+    0x8080808000800000ull, /* F4 */
+    0x8080808000800080ull, /* F5 */
+    0x8080808000808000ull, /* F6 */
+    0x8080808000808080ull, /* F7 */
+    0x8080808080000000ull, /* F8 */
+    0x8080808080000080ull, /* F9 */
+    0x8080808080008000ull, /* FA */
+    0x8080808080008080ull, /* FB */
+    0x8080808080800000ull, /* FC */
+    0x8080808080800080ull, /* FD */
+    0x8080808080808000ull, /* FE */
+    0x8080808080808080ull, /* FF */
+};
+
+void helper_vgbbd(ppc_avr_t *r, ppc_avr_t *b)
+{
+    int i;
+    uint64_t t[2] = { 0, 0 };
+
+    VECTOR_FOR_INORDER_I(i, u8) {
+#if defined(HOST_WORDS_BIGENDIAN)
+        t[i>>3] |= VGBBD_MASKS[b->u8[i]] >> (i & 7);
+#else
+        t[i>>3] |= VGBBD_MASKS[b->u8[i]] >> (7-(i & 7));
+#endif
+    }
+
+    r->u64[0] = t[0];
+    r->u64[1] = t[1];
+}
+
 #if defined(HOST_WORDS_BIGENDIAN)
 #define PKBIG 1
 #else
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index f15c21e..86cdfbe 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7369,6 +7369,7 @@ GEN_VXFORM_DUAL(vclzw, PPC_NONE, PPC2_ALTIVEC_207, \
 GEN_VXFORM_DUAL(vclzd, PPC_NONE, PPC2_ALTIVEC_207, \
                 vpopcntd, PPC_NONE, PPC2_ALTIVEC_207)
 GEN_VXFORM(vbpermq, 6, 21);
+GEN_VXFORM_NOA(vgbbd, 6, 20);
 
 /***                           VSX extension                               ***/
 
@@ -10594,6 +10595,7 @@ GEN_VXFORM_DUAL(vclzw, vpopcntw, 1, 30, PPC_NONE, PPC2_ALTIVEC_207),
 GEN_VXFORM_DUAL(vclzd, vpopcntd, 1, 31, PPC_NONE, PPC2_ALTIVEC_207),
 
 GEN_VXFORM_207(vbpermq, 6, 21),
+GEN_VXFORM_207(vgbbd, 6, 20),
 
 GEN_HANDLER_E(lxsdx, 0x1F, 0x0C, 0x12, 0, PPC_NONE, PPC2_VSX),
 GEN_HANDLER_E(lxsiwax, 0x1F, 0x0C, 0x02, 0, PPC_NONE, PPC2_VSX207),
