static void dec_sru(DisasContext *dc)
{
if (dc->format == OP_FMT_RI) {
LOG_DIS("srui r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
} else {
LOG_DIS("sru r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
}
if (dc->format == OP_FMT_RI) {
if (!(dc->features & LM32_FEATURE_SHIFT) && (dc->imm5 != 1)) {
qemu_log_mask(LOG_GUEST_ERROR,
"hardware shifter is not available\n");
t_gen_illegal_insn(dc);
return;
}
tcg_gen_shri_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
} else {
TCGLabel *l1 = gen_new_label();
TCGLabel *l2 = gen_new_label();
TCGv t0 = tcg_temp_local_new();
tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
if (!(dc->features & LM32_FEATURE_SHIFT)) {
tcg_gen_brcondi_tl(TCG_COND_EQ, t0, 1, l1);
t_gen_illegal_insn(dc);
tcg_gen_br(l2);
}
gen_set_label(l1);
tcg_gen_shr_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
gen_set_label(l2);
tcg_temp_free(t0);
}
}
static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val,
unsigned int size, int mem_index)
{
int l1 = gen_new_label();
TCGv taddr = tcg_temp_local_new();
TCGv tval = tcg_temp_local_new();
TCGv t1 = tcg_temp_local_new();
dc->postinc = 0;
cris_evaluate_flags(dc);
tcg_gen_mov_tl(taddr, addr);
tcg_gen_mov_tl(tval, val);
/* Store only if F flag isn't set */
tcg_gen_andi_tl(t1, cpu_PR[PR_CCS], F_FLAG_V10);
tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1);
if (size == 1) {
tcg_gen_qemu_st8(tval, taddr, mem_index);
} else if (size == 2) {
tcg_gen_qemu_st16(tval, taddr, mem_index);
} else {
tcg_gen_qemu_st32(tval, taddr, mem_index);
}
gen_set_label(l1);
tcg_gen_shri_tl(t1, t1, 1); /* shift F to P position */
tcg_gen_or_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], t1); /*P=F*/
tcg_temp_free(t1);
tcg_temp_free(tval);
tcg_temp_free(taddr);
}
static void dec_b(DisasContext *dc)
{
if (dc->r0 == R_RA) {
LOG_DIS("ret\n");
} else if (dc->r0 == R_EA) {
LOG_DIS("eret\n");
} else if (dc->r0 == R_BA) {
LOG_DIS("bret\n");
} else {
LOG_DIS("b r%d\n", dc->r0);
}
/* restore IE.IE in case of an eret */
if (dc->r0 == R_EA) {
TCGv t0 = tcg_temp_new();
TCGLabel *l1 = gen_new_label();
tcg_gen_andi_tl(t0, cpu_ie, IE_EIE);
tcg_gen_ori_tl(cpu_ie, cpu_ie, IE_IE);
tcg_gen_brcondi_tl(TCG_COND_EQ, t0, IE_EIE, l1);
tcg_gen_andi_tl(cpu_ie, cpu_ie, ~IE_IE);
gen_set_label(l1);
tcg_temp_free(t0);
} else if (dc->r0 == R_BA) {
TCGv t0 = tcg_temp_new();
TCGLabel *l1 = gen_new_label();
tcg_gen_andi_tl(t0, cpu_ie, IE_BIE);
tcg_gen_ori_tl(cpu_ie, cpu_ie, IE_IE);
tcg_gen_brcondi_tl(TCG_COND_EQ, t0, IE_BIE, l1);
tcg_gen_andi_tl(cpu_ie, cpu_ie, ~IE_IE);
gen_set_label(l1);
tcg_temp_free(t0);
}
tcg_gen_mov_tl(cpu_pc, cpu_R[dc->r0]);
dc->is_jmp = DISAS_JUMP;
}
static void dec_modu(DisasContext *dc)
{
TCGLabel *l1;
LOG_DIS("modu r%d, r%d, %d\n", dc->r2, dc->r0, dc->r1);
if (!(dc->features & LM32_FEATURE_DIVIDE)) {
qemu_log_mask(LOG_GUEST_ERROR, "hardware divider is not available\n");
t_gen_illegal_insn(dc);
return;
}
l1 = gen_new_label();
tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[dc->r1], 0, l1);
tcg_gen_movi_tl(cpu_pc, dc->pc);
t_gen_raise_exception(dc, EXCP_DIVIDE_BY_ZERO);
gen_set_label(l1);
tcg_gen_remu_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
}
static void dec10_reg_scc(DisasContext *dc)
{
int cond = dc->dst;
LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
if (cond != CC_A)
{
int l1;
gen_tst_cc (dc, cpu_R[dc->src], cond);
l1 = gen_new_label();
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->src], 0, l1);
tcg_gen_movi_tl(cpu_R[dc->src], 1);
gen_set_label(l1);
} else {
tcg_gen_movi_tl(cpu_R[dc->src], 1);
}
cris_cc_mask(dc, 0);
}
