target/i386: introduce insn_get_addr

The "O" operand type in the Intel SDM needs to load an 8- to 64-bit
unsigned value, while insn_get is limited to 32 bits.  Extract the code
out of disas_insn and into a separate function.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 26 insertions, 10 deletions

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index eaa56b0f48..44af8c107f 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -2289,6 +2289,31 @@ static void gen_ldst_modrm(CPUX86State *env, DisasContext *s, int modrm,
     }
 }
 
+static target_ulong insn_get_addr(CPUX86State *env, DisasContext *s, MemOp ot)
+{
+    target_ulong ret;
+
+    switch (ot) {
+    case MO_8:
+        ret = x86_ldub_code(env, s);
+        break;
+    case MO_16:
+        ret = x86_lduw_code(env, s);
+        break;
+    case MO_32:
+        ret = x86_ldl_code(env, s);
+        break;
+#ifdef TARGET_X86_64
+    case MO_64:
+        ret = x86_ldq_code(env, s);
+        break;
+#endif
+    default:
+        g_assert_not_reached();
+    }
+    return ret;
+}
+
 static inline uint32_t insn_get(CPUX86State *env, DisasContext *s, MemOp ot)
 {
     uint32_t ret;
@@ -5851,16 +5876,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
             target_ulong offset_addr;
 
             ot = mo_b_d(b, dflag);
-            switch (s->aflag) {
-#ifdef TARGET_X86_64
-            case MO_64:
-                offset_addr = x86_ldq_code(env, s);
-                break;
-#endif
-            default:
-                offset_addr = insn_get(env, s, s->aflag);
-                break;
-            }
+            offset_addr = insn_get_addr(env, s, s->aflag);
             tcg_gen_movi_tl(s->A0, offset_addr);
             gen_add_A0_ds_seg(s);
             if ((b & 2) == 0) {