Commit f58ed1c5 authored by Laurent Vivier's avatar Laurent Vivier
Browse files

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: default avatarLaurent Vivier <laurent@vivier.eu>
Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-11-laurent@vivier.eu>
parent 6ad25764

target/m68k/translate.c

+20 −0
Original line number Diff line number Diff line
@@ -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