[35/67] target/arm: Convert SETEND

Message ID 20190726175032.6769-36-richard.henderson@linaro.org
State Superseded
Headers show
Series
  • target/arm: Convert aa32 base isa to decodetree
Related show

Commit Message

Richard Henderson July 26, 2019, 5:50 p.m.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 target/arm/translate.c       | 22 +++++++++++++---------
 target/arm/a32-uncond.decode |  4 ++++
 2 files changed, 17 insertions(+), 9 deletions(-)

-- 
2.17.1

Patch

diff --git a/target/arm/translate.c b/target/arm/translate.c
index 8dbe189df7..1d07caa62a 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -10135,6 +10135,18 @@  static bool trans_SB(DisasContext *s, arg_SB *a)
     return true;
 }
 
+static bool trans_SETEND(DisasContext *s, arg_SETEND *a)
+{
+    if (!ENABLE_ARCH_6) {
+        return false;
+    }
+    if (a->E != (s->be_data == MO_BE)) {
+        gen_helper_setend(cpu_env);
+        s->base.is_jmp = DISAS_UPDATE;
+    }
+    return true;
+}
+
 /*
  * Legacy decoder.
  */
@@ -10220,15 +10232,7 @@  static void disas_arm_insn(DisasContext *s, unsigned int insn)
             return; /* v7MP: Unallocated memory hint: must NOP */
         }
 
-        if ((insn & 0x0ffffdff) == 0x01010000) {
-            ARCH(6);
-            /* setend */
-            if (((insn >> 9) & 1) != !!(s->be_data == MO_BE)) {
-                gen_helper_setend(cpu_env);
-                s->base.is_jmp = DISAS_UPDATE;
-            }
-            return;
-        } else if ((insn & 0x0e000f00) == 0x0c000100) {
+        if ((insn & 0x0e000f00) == 0x0c000100) {
             if (arm_dc_feature(s, ARM_FEATURE_IWMMXT)) {
                 /* iWMMXt register transfer.  */
                 if (extract32(s->c15_cpar, 1, 1)) {
diff --git a/target/arm/a32-uncond.decode b/target/arm/a32-uncond.decode
index eb1c55b330..d5ed48f0fd 100644
--- a/target/arm/a32-uncond.decode
+++ b/target/arm/a32-uncond.decode
@@ -24,6 +24,7 @@ 
 
 &empty           !extern
 &i               !extern imm
+&setend          E
 
 # Branch with Link and Exchange
 
@@ -50,3 +51,6 @@  DSB              1111 0101 0111 1111 1111 0000 0100 ----
 DMB              1111 0101 0111 1111 1111 0000 0101 ----
 ISB              1111 0101 0111 1111 1111 0000 0110 ----
 SB               1111 0101 0111 1111 1111 0000 0111 0000
+
+# Set Endianness
+SETEND           1111 0001 0000 0001 0000 00 E:1 0 0000 0000  &setend