From: Laurent Vivier <laurent@vivier.eu>
Date: Thu, 4 Jan 2018 01:29:06 +0000 (+0100)
Subject: target/m68k: add cpush/cinv
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f58ed1c50add3e76331afdc92387c0da9dd9e443;p=qemu.git

target/m68k: add cpush/cinv

Add cache lines invalidate and cache lines push
as no-op operations, as we don't have cache.

These instructions are 68040 only.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-11-laurent@vivier.eu>
---

diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index f77005215f..98efe6b976 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -4496,6 +4496,24 @@ DISAS_INSN(cpushl)
     /* Cache push/invalidate.  Implement as no-op.  */
 }
 
+DISAS_INSN(cpush)
+{
+    if (IS_USER(s)) {
+        gen_exception(s, s->insn_pc, EXCP_PRIVILEGE);
+        return;
+    }
+    /* Cache push/invalidate.  Implement as no-op.  */
+}
+
+DISAS_INSN(cinv)
+{
+    if (IS_USER(s)) {
+        gen_exception(s, s->insn_pc, EXCP_PRIVILEGE);
+        return;
+    }
+    /* Invalidate cache line.  Implement as no-op.  */
+}
+
 DISAS_INSN(wddata)
 {
     gen_exception(s, s->insn_pc, EXCP_PRIVILEGE);
@@ -5674,6 +5692,8 @@ void register_m68k_insns (CPUM68KState *env)
     INSN(fsave,     f300, ffc0, FPU);
     INSN(intouch,   f340, ffc0, CF_ISA_A);
     INSN(cpushl,    f428, ff38, CF_ISA_A);
+    INSN(cpush,     f420, ff20, M68040);
+    INSN(cinv,      f400, ff20, M68040);
     INSN(wddata,    fb00, ff00, CF_ISA_A);
     INSN(wdebug,    fbc0, ffc0, CF_ISA_A);
 #endif