Define as false, which allows some ifdef removal.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/sparc/translate.c | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 080bc5f8a2..9eb2b7e52f 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -268,20 +268,21 @@ static void gen_move_Q(DisasContext *dc, unsigned int rd, unsigned int rs)
 #endif
 #endif
 
-#ifdef TARGET_SPARC64
-#ifndef TARGET_ABI32
-#define AM_CHECK(dc) ((dc)->address_mask_32bit)
+#if !defined(TARGET_SPARC64)
+# define AM_CHECK(dc)  false
+#elif defined(TARGET_ABI32)
+# define AM_CHECK(dc)  true
+#elif defined(CONFIG_USER_ONLY)
+# define AM_CHECK(dc)  false
 #else
-#define AM_CHECK(dc) (1)
-#endif
+# define AM_CHECK(dc)  ((dc)->address_mask_32bit)
 #endif
 
 static void gen_address_mask(DisasContext *dc, TCGv addr)
 {
-#ifdef TARGET_SPARC64
-    if (AM_CHECK(dc))
+    if (AM_CHECK(dc)) {
         tcg_gen_andi_tl(addr, addr, 0xffffffffULL);
-#endif
+    }
 }
 
 static TCGv gen_load_gpr(DisasContext *dc, int reg)
@@ -1366,11 +1367,9 @@ static void do_branch(DisasContext *dc, int32_t offset, uint32_t insn, int cc)
     unsigned int cond = GET_FIELD(insn, 3, 6), a = (insn & (1 << 29));
     target_ulong target = dc->pc + offset;
 
-#ifdef TARGET_SPARC64
     if (unlikely(AM_CHECK(dc))) {
         target &= 0xffffffffULL;
     }
-#endif
     if (cond == 0x0) {
         /* unconditional not taken */
         if (a) {
@@ -1406,11 +1405,9 @@ static void do_fbranch(DisasContext *dc, int32_t offset, uint32_t insn, int cc)
     unsigned int cond = GET_FIELD(insn, 3, 6), a = (insn & (1 << 29));
     target_ulong target = dc->pc + offset;
 
-#ifdef TARGET_SPARC64
     if (unlikely(AM_CHECK(dc))) {
         target &= 0xffffffffULL;
     }
-#endif
     if (cond == 0x0) {
         /* unconditional not taken */
         if (a) {
-- 
2.34.1