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target/m68k: implement fsave/frestore

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Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180104012913.30763-13-laurent@vivier.eu>
This commit is contained in:
Laurent Vivier 2018-01-04 02:29:08 +01:00
parent 0bdb2b3bf5
commit fff3b4b0e1
1 changed files with 15 additions and 8 deletions
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23
target/m68k/translate.c
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@ -5103,28 +5103,35 @@ DISAS_INSN(fscc)
#if defined(CONFIG_SOFTMMU)
DISAS_INSN(frestore)
{
M68kCPU *cpu = m68k_env_get_cpu(env);
TCGv addr;
if (IS_USER(s)) {
gen_exception(s, s->insn_pc, EXCP_PRIVILEGE);
return;
}
/* TODO: Implement frestore. */
cpu_abort(CPU(cpu), "FRESTORE not implemented");
if (m68k_feature(s->env, M68K_FEATURE_M68040)) {
SRC_EA(env, addr, OS_LONG, 0, NULL);
/* FIXME: check the state frame */
} else {
disas_undef(env, s, insn);
}
}
DISAS_INSN(fsave)
{
M68kCPU *cpu = m68k_env_get_cpu(env);
if (IS_USER(s)) {
gen_exception(s, s->insn_pc, EXCP_PRIVILEGE);
return;
}
/* TODO: Implement fsave. */
cpu_abort(CPU(cpu), "FSAVE not implemented");
if (m68k_feature(s->env, M68K_FEATURE_M68040)) {
/* always write IDLE */
TCGv idle = tcg_const_i32(0x41000000);
DEST_EA(env, insn, OS_LONG, idle, NULL);
tcg_temp_free(idle);
} else {
disas_undef(env, s, insn);
}
}
#endif