From: Richard Henderson <rth@twiddle.net>
Date: Mon, 29 Mar 2010 17:48:14 +0000 (-0700)
Subject: target-alpha: Update commentary for opcode 0x1A.
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=49563a727494197ad87936bfd07841878878b650;p=qemu.git

target-alpha: Update commentary for opcode 0x1A.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---

diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index 2a9cee9c6b..4321a25eeb 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -2531,13 +2531,16 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
         break;
 #endif
     case 0x1A:
-        if (rb != 31)
+        /* JMP, JSR, RET, JSR_COROUTINE.  These only differ by the branch
+           prediction stack action, which of course we don't implement.  */
+        if (rb != 31) {
             tcg_gen_andi_i64(cpu_pc, cpu_ir[rb], ~3);
-        else
+        } else {
             tcg_gen_movi_i64(cpu_pc, 0);
-        if (ra != 31)
+        }
+        if (ra != 31) {
             tcg_gen_movi_i64(cpu_ir[ra], ctx->pc);
-        /* Those four jumps only differ by the branch prediction hint */
+        }
         ret = EXIT_PC_UPDATED;
         break;
     case 0x1B: