[Qemu-devel] [PATCH 01/16] tcg: Add TCGMemOp

[Richard Henderson <rth@twiddle.net>]

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 tcg/tcg.h | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 57 insertions(+), 2 deletions(-)

diff --git a/tcg/tcg.h b/tcg/tcg.h
index 53c4b33..91dcd92 100644
--- a/tcg/tcg.h
+++ b/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
@@ -217,8 +271,9 @@ typedef tcg_target_ulong TCGArg;
 #define TCG_MAX_QEMU_LDST       640
 
 typedef struct TCGLabelQemuLdst {
-    int is_ld:1;            /* qemu_ld: 1, qemu_st: 0 */
-    int opc:4;
+    unsigned is_ld : 1;          /* qemu_ld: 1, qemu_st: 0 */
+    TCGMemOp opc : 4;
+
     int addrlo_reg;         /* reg index for low word of guest virtual addr */
     int addrhi_reg;         /* reg index for high word of guest virtual addr */
     int datalo_reg;         /* reg index for low word to be loaded or stored */
-- 
1.8.1.4