[Qemu-devel] [6838] tcg/x86_64: add bswap16_i{32, 64} and bswap32_i64 ops

[Aurelien Jarno]

Revision: 6838
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6838
Author:   aurel32
Date:     2009-03-13 09:35:55 +0000 (Fri, 13 Mar 2009)
Log Message:
-----------
tcg/x86_64: add bswap16_i{32,64} and bswap32_i64 ops

Signed-off-by: Aurelien Jarno <address@hidden>

Modified Paths:
--------------
    trunk/tcg/x86_64/tcg-target.c
    trunk/tcg/x86_64/tcg-target.h

Modified: trunk/tcg/x86_64/tcg-target.c
===================================================================
--- trunk/tcg/x86_64/tcg-target.c       2009-03-13 09:35:49 UTC (rev 6837)
+++ trunk/tcg/x86_64/tcg-target.c       2009-03-13 09:35:55 UTC (rev 6838)
@@ -1094,7 +1094,14 @@
                        args[3], P_REXW);
         break;
 
+    case INDEX_op_bswap16_i32:
+    case INDEX_op_bswap16_i64:
+        tcg_out8(s, 0x66);
+        tcg_out_modrm(s, 0xc1, SHIFT_ROL, args[0]);
+        tcg_out8(s, 8);
+        break;
     case INDEX_op_bswap32_i32:
+    case INDEX_op_bswap32_i64:
         tcg_out_opc(s, (0xc8 + (args[0] & 7)) | P_EXT, 0, args[0], 0);
         break;
     case INDEX_op_bswap64_i64:
@@ -1287,7 +1294,10 @@
 
     { INDEX_op_brcond_i64, { "r", "re" } },
 
+    { INDEX_op_bswap16_i32, { "r", "0" } },
+    { INDEX_op_bswap16_i64, { "r", "0" } },
     { INDEX_op_bswap32_i32, { "r", "0" } },
+    { INDEX_op_bswap32_i64, { "r", "0" } },
     { INDEX_op_bswap64_i64, { "r", "0" } },
 
     { INDEX_op_neg_i32, { "r", "0" } },

Modified: trunk/tcg/x86_64/tcg-target.h
===================================================================
--- trunk/tcg/x86_64/tcg-target.h       2009-03-13 09:35:49 UTC (rev 6837)
+++ trunk/tcg/x86_64/tcg-target.h       2009-03-13 09:35:55 UTC (rev 6838)
@@ -56,7 +56,10 @@
 #define TCG_TARGET_CALL_STACK_OFFSET 0
 
 /* optional instructions */
+#define TCG_TARGET_HAS_bswap16_i32
+#define TCG_TARGET_HAS_bswap16_i64
 #define TCG_TARGET_HAS_bswap32_i32
+#define TCG_TARGET_HAS_bswap32_i64
 #define TCG_TARGET_HAS_bswap64_i64
 #define TCG_TARGET_HAS_neg_i32
 #define TCG_TARGET_HAS_neg_i64