diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index 0dcf612258a843243fe2b3115526a7573b478f21..7dfb17f2cf7a402349bffef6aef1f5caeb19bbbd 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -1339,6 +1339,13 @@ static void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
         tcg_out_qemu_st(s, args, 3);
         break;
 
+    case INDEX_op_ext8s_i32:
+        tcg_out32 (s, EXTSB | RS (args[1]) | RA (args[0]));
+        break;
+    case INDEX_op_ext16s_i32:
+        tcg_out32 (s, EXTSH | RS (args[1]) | RA (args[0]));
+        break;
+
     default:
         tcg_dump_ops (s, stderr);
         tcg_abort ();
@@ -1415,6 +1422,9 @@ static const TCGTargetOpDef ppc_op_defs[] = {
     { INDEX_op_qemu_st64, { "M", "M", "M", "M" } },
 #endif
 
+    { INDEX_op_ext8s_i32, { "r", "r" } },
+    { INDEX_op_ext16s_i32, { "r", "r" } },
+
     { -1 },
 };
 
diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h
index db1b12170d3180e22a82bd934b3857691c739131..e21b9926da4af358315c12262b7b36c5e19b1f35 100644
--- a/tcg/ppc/tcg-target.h
+++ b/tcg/ppc/tcg-target.h
@@ -71,6 +71,8 @@ enum {
 /* optional instructions */
 #define TCG_TARGET_HAS_neg_i32
 #define TCG_TARGET_HAS_div_i32
+#define TCG_TARGET_HAS_ext8s_i32
+#define TCG_TARGET_HAS_ext16s_i32
 
 #define TCG_AREG0 TCG_REG_R27
 #define TCG_AREG1 TCG_REG_R24
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index a2b6aad5ef021930b484aa07ab965935d915236a..0967b95d5b8d649b7ea5d22a169c6f8284fa0dc2 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -969,6 +969,8 @@ void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr)
 static void tcg_out_op (TCGContext *s, int opc, const TCGArg *args,
                         const int *const_args)
 {
+    int c;
+
     switch (opc) {
     case INDEX_op_exit_tb:
         tcg_out_movi (s, TCG_TYPE_I64, TCG_REG_R3, args[0]);
@@ -1313,6 +1315,21 @@ static void tcg_out_op (TCGContext *s, int opc, const TCGArg *args,
         tcg_out_qemu_st (s, args, 3);
         break;
 
+    case INDEX_op_ext8s_i32:
+    case INDEX_op_ext8s_i64:
+        c = EXTSB;
+        goto gen_ext;
+    case INDEX_op_ext16s_i32:
+    case INDEX_op_ext16s_i64:
+        c = EXTSH;
+        goto gen_ext;
+    case INDEX_op_ext32s_i64:
+        c = EXTSW;
+        goto gen_ext;
+    gen_ext:
+        tcg_out32 (s, c | RS (args[1]) | RA (args[0]));
+        break;
+
     default:
         tcg_dump_ops (s, stderr);
         tcg_abort ();
@@ -1404,6 +1421,12 @@ static const TCGTargetOpDef ppc_op_defs[] = {
     { INDEX_op_qemu_st32, { "K", "K" } },
     { INDEX_op_qemu_st64, { "M", "M", "M" } },
 
+    { INDEX_op_ext8s_i32, { "r", "r" } },
+    { INDEX_op_ext16s_i32, { "r", "r" } },
+    { INDEX_op_ext8s_i64, { "r", "r" } },
+    { INDEX_op_ext16s_i64, { "r", "r" } },
+    { INDEX_op_ext32s_i64, { "r", "r" } },
+
     { -1 },
 };
 
diff --git a/tcg/ppc64/tcg-target.h b/tcg/ppc64/tcg-target.h
index 98d66cd92e1f1e94e2550ee16ff793ab443fbdfd..66feb4d5af1254df20f9a1d4ff5b091743bac62e 100644
--- a/tcg/ppc64/tcg-target.h
+++ b/tcg/ppc64/tcg-target.h
@@ -72,6 +72,11 @@ enum {
 #define TCG_TARGET_HAS_div_i32
 #define TCG_TARGET_HAS_neg_i64
 #define TCG_TARGET_HAS_div_i64
+#define TCG_TARGET_HAS_ext8s_i32
+#define TCG_TARGET_HAS_ext16s_i32
+#define TCG_TARGET_HAS_ext8s_i64
+#define TCG_TARGET_HAS_ext16s_i64
+#define TCG_TARGET_HAS_ext32s_i64
 
 #define TCG_AREG0 TCG_REG_R27
 #define TCG_AREG1 TCG_REG_R24