tcg: Add TCGMemOp

Signed-off-by: NRichard Henderson <rth@twiddle.net>

tcg/tcg.h

@@ -197,6 +197,60 @@ typedef enum TCGType {
 #endif
 } TCGType;
 
+/* Constants for qemu_ld and qemu_st for the Memory Operation field.  */
+typedef enum TCGMemOp {
+    MO_8     = 0,
+    MO_16    = 1,
+    MO_32    = 2,
+    MO_64    = 3,
+    MO_SIZE  = 3,   /* Mask for the above.  */
+
+    MO_SIGN  = 4,   /* Sign-extended, otherwise zero-extended.  */
+
+    MO_BSWAP = 8,   /* Host reverse endian.  */
+#ifdef HOST_WORDS_BIGENDIAN
+    MO_LE    = MO_BSWAP,
+    MO_BE    = 0,
+#else
+    MO_LE    = 0,
+    MO_BE    = MO_BSWAP,
+#endif
+#ifdef TARGET_WORDS_BIGENDIAN
+    MO_TE    = MO_BE,
+#else
+    MO_TE    = MO_LE,
+#endif
+
+    /* Combinations of the above, for ease of use.  */
+    MO_UB    = MO_8,
+    MO_UW    = MO_16,
+    MO_UL    = MO_32,
+    MO_SB    = MO_SIGN | MO_8,
+    MO_SW    = MO_SIGN | MO_16,
+    MO_SL    = MO_SIGN | MO_32,
+    MO_Q     = MO_64,
+
+    MO_LEUW  = MO_LE | MO_UW,
+    MO_LEUL  = MO_LE | MO_UL,
+    MO_LESW  = MO_LE | MO_SW,
+    MO_LESL  = MO_LE | MO_SL,
+    MO_LEQ   = MO_LE | MO_Q,
+
+    MO_BEUW  = MO_BE | MO_UW,
+    MO_BEUL  = MO_BE | MO_UL,
+    MO_BESW  = MO_BE | MO_SW,
+    MO_BESL  = MO_BE | MO_SL,
+    MO_BEQ   = MO_BE | MO_Q,
+
+    MO_TEUW  = MO_TE | MO_UW,
+    MO_TEUL  = MO_TE | MO_UL,
+    MO_TESW  = MO_TE | MO_SW,
+    MO_TESL  = MO_TE | MO_SL,
+    MO_TEQ   = MO_TE | MO_Q,
+
+    MO_SSIZE = MO_SIZE | MO_SIGN,
+} TCGMemOp;
+
 typedef tcg_target_ulong TCGArg;
 
 /* Define a type and accessor macros for variables.  Using a struct is