[Qemu-devel] [RFC PATCH v4 18/75] target/i386: introduce generic operand alias

[Jan Bobek]

It turns out it is useful to be able to declare operand name
aliases. Introduce a macro to capture this functionality.

Signed-off-by: Jan Bobek <address@hidden>
---
 target/i386/translate.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/target/i386/translate.c b/target/i386/translate.c
index 78ef0e6608..a6f23bae4e 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -4606,6 +4606,26 @@ static bool check_cpuid(CPUX86State *env, DisasContext 
*s, CheckCpuidFeat feat)
                                      int modrm, bool is_write,  \
                                      insnop_arg_t(opT) arg)
 
+/*
+ * Operand alias
+ */
+#define DEF_INSNOP_ALIAS(opT, opT2)                                     \
+    typedef insnop_arg_t(opT2) insnop_arg_t(opT);                       \
+    typedef insnop_ctxt_t(opT2) insnop_ctxt_t(opT);                     \
+                                                                        \
+    INSNOP_INIT(opT)                                                    \
+    {                                                                   \
+        return insnop_init(opT2)(ctxt, env, s, modrm, is_write);        \
+    }                                                                   \
+    INSNOP_PREPARE(opT)                                                 \
+    {                                                                   \
+        return insnop_prepare(opT2)(ctxt, env, s, modrm, is_write);     \
+    }                                                                   \
+    INSNOP_FINALIZE(opT)                                                \
+    {                                                                   \
+        insnop_finalize(opT2)(ctxt, env, s, modrm, is_write, arg);      \
+    }
+
 static void gen_sse_ng(CPUX86State *env, DisasContext *s, int b)
 {
     enum {
-- 
2.20.1