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microblaze: Add support for the sleep insn 

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Edgar E. Iglesias 2013-03-28 22:59:03 +01:00 committed by Edgar E. Iglesias
parent 174d4d215f
commit 5d45de9796
1 changed files with 17 additions and 0 deletions
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17
target-microblaze/translate.c
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@ -1317,6 +1317,23 @@ static void dec_br(DisasContext *dc)
/* Memory barrier. */
mbar = (dc->ir >> 16) & 31;
if (mbar == 2 && dc->imm == 4) {
/* mbar IMM & 16 decodes to sleep. */
if (dc->rd & 16) {
TCGv_i32 tmp_hlt = tcg_const_i32(EXCP_HLT);
TCGv_i32 tmp_1 = tcg_const_i32(1);
LOG_DIS("sleep\n");
t_sync_flags(dc);
tcg_gen_st_i32(tmp_1, cpu_env,
-offsetof(MicroBlazeCPU, env)
+offsetof(CPUState, halted));
tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc + 4);
gen_helper_raise_exception(cpu_env, tmp_hlt);
tcg_temp_free_i32(tmp_hlt);
tcg_temp_free_i32(tmp_1);
return;
}
LOG_DIS("mbar %d\n", dc->rd);
/* Break the TB. */
dc->cpustate_changed = 1;