From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [6832] tcg: add bswap16_i64 and bswap32_i64 TCG ops
Date: Fri, 13 Mar 2009 09:35:13 +0000 [thread overview]
Message-ID: <E1Li3nN-0006z3-0y@cvs.savannah.gnu.org> (raw)
Revision: 6832
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6832
Author: aurel32
Date: 2009-03-13 09:35:12 +0000 (Fri, 13 Mar 2009)
Log Message:
-----------
tcg: add bswap16_i64 and bswap32_i64 TCG ops
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Modified Paths:
--------------
trunk/tcg/tcg-op.h
trunk/tcg/tcg-opc.h
Modified: trunk/tcg/tcg-op.h
===================================================================
--- trunk/tcg/tcg-op.h 2009-03-13 09:35:03 UTC (rev 6831)
+++ trunk/tcg/tcg-op.h 2009-03-13 09:35:12 UTC (rev 6832)
@@ -1297,6 +1297,20 @@
tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_LOW(ret), 31);
}
+/* Note: we assume the six high bytes are set to zero */
+static inline void tcg_gen_bswap16_i64(TCGv_i64 ret, TCGv_i64 arg)
+{
+ tcg_gen_mov_i32(TCGV_HIGH(ret), TCGV_HIGH(arg));
+ tcg_gen_bswap16_i32(TCGV_LOW(ret), TCGV_LOW(arg));
+}
+
+/* Note: we assume the four high bytes are set to zero */
+static inline void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg)
+{
+ tcg_gen_mov_i32(TCGV_HIGH(ret), TCGV_HIGH(arg));
+ tcg_gen_bswap32_i32(TCGV_LOW(ret), TCGV_LOW(arg));
+}
+
static inline void tcg_gen_bswap64_i64(TCGv_i64 ret, TCGv_i64 arg)
{
TCGv_i32 t0, t1;
@@ -1378,6 +1392,50 @@
tcg_gen_ext32s_i64(ret, MAKE_TCGV_I64(GET_TCGV_I32(arg)));
}
+/* Note: we assume the six high bytes are set to zero */
+static inline void tcg_gen_bswap16_i64(TCGv_i64 ret, TCGv_i64 arg)
+{
+#ifdef TCG_TARGET_HAS_bswap16_i64
+ tcg_gen_op2_i64(INDEX_op_bswap16_i64, ret, arg);
+#else
+ TCGv_i64 t0 = tcg_temp_new_i64();
+
+ tcg_gen_ext8u_i64(t0, arg);
+ tcg_gen_shli_i64(t0, t0, 8);
+ tcg_gen_shri_i64(ret, arg, 8);
+ tcg_gen_or_i64(ret, ret, t0);
+ tcg_temp_free_i64(t0);
+#endif
+}
+
+/* Note: we assume the four high bytes are set to zero */
+static inline void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg)
+{
+#ifdef TCG_TARGET_HAS_bswap32_i64
+ tcg_gen_op2_i64(INDEX_op_bswap32_i64, ret, arg);
+#else
+ TCGv_i64 t0, t1;
+ t0 = tcg_temp_new_i64();
+ t1 = tcg_temp_new_i64();
+
+ tcg_gen_shli_i64(t0, arg, 24);
+ tcg_gen_ext32u_i64(t0, t0);
+
+ tcg_gen_andi_i64(t1, arg, 0x0000ff00);
+ tcg_gen_shli_i64(t1, t1, 8);
+ tcg_gen_or_i64(t0, t0, t1);
+
+ tcg_gen_shri_i64(t1, arg, 8);
+ tcg_gen_andi_i64(t1, t1, 0x0000ff00);
+ tcg_gen_or_i64(t0, t0, t1);
+
+ tcg_gen_shri_i64(t1, arg, 24);
+ tcg_gen_or_i64(ret, t0, t1);
+ tcg_temp_free_i64(t0);
+ tcg_temp_free_i64(t1);
+#endif
+}
+
static inline void tcg_gen_bswap64_i64(TCGv_i64 ret, TCGv_i64 arg)
{
#ifdef TCG_TARGET_HAS_bswap64_i64
Modified: trunk/tcg/tcg-opc.h
===================================================================
--- trunk/tcg/tcg-opc.h 2009-03-13 09:35:03 UTC (rev 6831)
+++ trunk/tcg/tcg-opc.h 2009-03-13 09:35:12 UTC (rev 6832)
@@ -152,6 +152,12 @@
#ifdef TCG_TARGET_HAS_ext32s_i64
DEF2(ext32s_i64, 1, 1, 0, 0)
#endif
+#ifdef TCG_TARGET_HAS_bswap16_i64
+DEF2(bswap16_i64, 1, 1, 0, 0)
+#endif
+#ifdef TCG_TARGET_HAS_bswap32_i64
+DEF2(bswap32_i64, 1, 1, 0, 0)
+#endif
#ifdef TCG_TARGET_HAS_bswap64_i64
DEF2(bswap64_i64, 1, 1, 0, 0)
#endif
reply other threads:[~2009-03-13 9:35 UTC|newest]
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