static void dec10_movem_m_r(DisasContext *dc)
{
int i, pfix = dc->tb_flags & PFIX_FLAG;
TCGv addr, t0;
LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
dc->src, dc->dst, dc->postinc, dc->ir);
addr = tcg_temp_new();
t0 = tcg_temp_new();
crisv10_prepare_memaddr(dc, addr, 4);
tcg_gen_mov_tl(t0, addr);
for (i = dc->dst; i >= 0; i--) {
gen_load(dc, cpu_R[i], addr, 4, 0);
tcg_gen_addi_tl(addr, addr, 4);
}
if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
tcg_gen_mov_tl(cpu_R[dc->src], t0);
}
if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
tcg_gen_mov_tl(cpu_R[dc->src], addr);
}
tcg_temp_free(addr);
tcg_temp_free(t0);
}
static bool trans_mulhu(DisasContext *ctx, arg_mulhu *a)
{
REQUIRE_EXT(ctx, RVM);
TCGv source1 = tcg_temp_new();
TCGv source2 = tcg_temp_new();
gen_get_gpr(source1, a->rs1);
gen_get_gpr(source2, a->rs2);
tcg_gen_mulu2_tl(source2, source1, source1, source2);
gen_set_gpr(a->rd, source1);
tcg_temp_free(source1);
tcg_temp_free(source2);
return true;
}
static void dec10_reg_mul(DisasContext *dc, int size, int sext)
{
int op = sext ? CC_OP_MULS : CC_OP_MULU;
TCGv t[2];
t[0] = tcg_temp_new();
t[1] = tcg_temp_new();
dec10_reg_prep_sext(dc, size, sext,
t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4);
tcg_temp_free(t[0]);
tcg_temp_free(t[1]);
}
static int dec10_alux_m(DisasContext *dc, int op)
{
unsigned int size = (dc->size & 1) ? 2 : 1;
unsigned int sx = !!(dc->size & 2);
int insn_len = 2;
int rd = dc->dst;
TCGv t;
LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
t = tcg_temp_new();
cris_cc_mask(dc, CC_MASK_NZVC);
insn_len += dec10_prep_move_m(dc, sx, size, t);
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
if (dc->dst == 15) {
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
cris_prepare_jmp(dc, JMP_INDIRECT);
dc->delayed_branch = 1;
return insn_len;
}
tcg_temp_free(t);
return insn_len;
}
static int dec10_prep_move_m(DisasContext *dc, int s_ext, int memsize,
TCGv dst)
{
unsigned int rs;
uint32_t imm;
int is_imm;
int insn_len = 0;
rs = dc->src;
is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG);
/* Load [$rs] onto T1. */
if (is_imm) {
if (memsize != 4) {
if (s_ext) {
if (memsize == 1)
imm = ldsb_code(dc->pc + 2);
else
imm = ldsw_code(dc->pc + 2);
} else {
if (memsize == 1)
imm = ldub_code(dc->pc + 2);
else
imm = lduw_code(dc->pc + 2);
}
} else
imm = ldl_code(dc->pc + 2);
tcg_gen_movi_tl(dst, imm);
if (dc->mode == CRISV10_MODE_AUTOINC) {
insn_len += memsize;
if (memsize == 1)
insn_len++;
tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len);
}
} else {
TCGv addr;
addr = tcg_temp_new();
cris_flush_cc_state(dc);
crisv10_prepare_memaddr(dc, addr, memsize);
gen_load(dc, dst, addr, memsize, 0);
if (s_ext)
t_gen_sext(dst, dst, memsize);
else
t_gen_zext(dst, dst, memsize);
insn_len += crisv10_post_memaddr(dc, memsize);
tcg_temp_free(addr);
}
if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
dc->dst = dc->src;
}
return insn_len;
}
static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext)
{
TCGv t[2];
t[0] = tcg_temp_new();
t[1] = tcg_temp_new();
dec10_reg_prep_sext(dc, size, sext,
t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]);
if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
tcg_gen_andi_tl(t[1], t[1], 63);
}
assert(dc->dst != 15);
cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size);
tcg_temp_free(t[0]);
tcg_temp_free(t[1]);
}
static void dec_lw(DisasContext *dc)
{
TCGv t0;
LOG_DIS("lw r%d, (r%d+%d)\n", dc->r1, dc->r0, sign_extend(dc->imm16, 16));
t0 = tcg_temp_new();
tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
tcg_gen_qemu_ld32s(cpu_R[dc->r1], t0, MEM_INDEX);
tcg_temp_free(t0);
}
static void dec_sw(DisasContext *dc)
{
TCGv t0;
LOG_DIS("sw (r%d+%d), r%d\n", dc->r0, sign_extend(dc->imm16, 16), dc->r1);
t0 = tcg_temp_new();
tcg_gen_addi_tl(t0, cpu_R[dc->r0], sign_extend(dc->imm16, 16));
tcg_gen_qemu_st32(cpu_R[dc->r1], t0, MEM_INDEX);
tcg_temp_free(t0);
}
static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size)
{
unsigned int insn_len = 2;
TCGv addr;
LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
addr = tcg_temp_new();
crisv10_prepare_memaddr(dc, addr, size);
gen_store_v10(dc, addr, cpu_R[dc->dst], size);
insn_len += crisv10_post_memaddr(dc, size);
return insn_len;
}
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 unsigned int dec10_ind_move_pr_m(DisasContext *dc)
{
unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst];
TCGv addr, t0;
LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
addr = tcg_temp_new();
crisv10_prepare_memaddr(dc, addr, size);
if (dc->dst == PR_CCS) {
t0 = tcg_temp_new();
cris_evaluate_flags(dc);
tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG);
gen_store_v10(dc, addr, t0, size);
tcg_temp_free(t0);
} else {
gen_store_v10(dc, addr, cpu_PR[dc->dst], size);
}
t0 = tcg_temp_new();
insn_len += crisv10_post_memaddr(dc, size);
cris_lock_irq(dc);
return insn_len;
}
static void dec10_reg_abs(DisasContext *dc)
{
TCGv t0;
LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
assert(dc->dst != 15);
t0 = tcg_temp_new();
tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0);
tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0);
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
tcg_temp_free(t0);
}
static unsigned int dec10_ind_move_m_pr(DisasContext *dc)
{
unsigned int insn_len = 2, rd = dc->dst;
TCGv t, addr;
LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
cris_lock_irq(dc);
addr = tcg_temp_new();
t = tcg_temp_new();
insn_len += dec10_prep_move_m(dc, 0, 4, t);
if (rd == 15) {
tcg_gen_mov_tl(env_btarget, t);
cris_prepare_jmp(dc, JMP_INDIRECT);
dc->delayed_branch = 1;
return insn_len;
}
tcg_gen_mov_tl(cpu_PR[rd], t);
dc->cpustate_changed = 1;
tcg_temp_free(addr);
tcg_temp_free(t);
return insn_len;
}
static void gen_lvsr(DisasContext *ctx)
{
TCGv_ptr rd;
TCGv EA;
if (unlikely(!ctx->altivec_enabled)) {
gen_exception(ctx, POWERPC_EXCP_VPU);
return;
}
EA = tcg_temp_new();
gen_addr_reg_index(ctx, EA);
rd = gen_avr_ptr(rD(ctx->opcode));
gen_helper_lvsr(rd, EA);
tcg_temp_free(EA);
tcg_temp_free_ptr(rd);
}
/*
* pop_shack()
* Pop next host eip from shadow stack.
*/
void pop_shack(TCGv_ptr cpu_env, TCGv next_eip)
{
#ifdef OPT_SHACK
/* declare variables */
int lab_end = gen_new_label();
TCGv tcg_next_eip = tcg_temp_local_new();
TCGv_ptr tcg_top_host_eip = tcg_temp_local_new_ptr();
TCGv_ptr tcg_shack_top = tcg_temp_new_ptr();
TCGv_ptr tcg_shack = tcg_temp_new_ptr();
TCGv tcg_top_guest_eip = tcg_temp_new();
/* check if shack is empty */
tcg_gen_mov_tl(tcg_next_eip, next_eip);
tcg_gen_ld_ptr(tcg_shack_top, cpu_env, offsetof(CPUState, shack_top)); //load shack top
tcg_gen_ld_ptr(tcg_shack, cpu_env, offsetof(CPUState, shack)); //load shack
tcg_gen_brcond_i32(TCG_COND_EQ, tcg_shack_top, tcg_shack, lab_end); // if(shack_top == shack): jmp to lab_end
/* shack not empty -> update shack top*/
tcg_gen_ld_ptr(tcg_shack_top, cpu_env, offsetof(CPUState, shack_top)); //load shack top
tcg_gen_subi_i32(tcg_shack_top, tcg_shack_top, sizeof (void *)); //else: shack_top--
tcg_gen_st_tl(tcg_shack_top, cpu_env, offsetof(CPUState, shack_top)); // store shack top
/* check if shack_top->guest_eip == tcg_next_eip */
tcg_gen_ld_ptr(tcg_shack_top, tcg_shack_top, 0); // shack top = shack[shack_top]
tcg_gen_ld_tl(tcg_top_guest_eip, tcg_shack_top, offsetof(struct shadow_pair, guest_eip)); //tcg_top_guest_eip = tcg_shack_top->guest_eip
tcg_gen_brcond_i32(TCG_COND_NE, tcg_top_guest_eip, tcg_next_eip, lab_end); // if(shack_top->guest_eip != next_eip): jmp to lab_end
/* check if shack_top->host_eip is valid */
tcg_gen_ld_ptr(tcg_shack_top, cpu_env, offsetof(CPUState, shack_top)); //load shack top
tcg_gen_ld_ptr(tcg_shack_top, tcg_shack_top, 0); // shack top = shack[shack_top]
tcg_gen_ld_ptr(tcg_top_host_eip, tcg_shack_top, offsetof(struct shadow_pair, host_eip)); //tcg_top_host_eip = tcg_shack_top->host_eip
tcg_gen_brcond_i32(TCG_COND_EQ, tcg_top_host_eip, tcg_const_ptr(NULL), lab_end); // if(shack_top->host_eip == NULL): jmp to lab_end
/* update return addr*/
*gen_opc_ptr++ = INDEX_op_jmp;
*gen_opparam_ptr++ = tcg_top_host_eip;
/* clean up */
gen_set_label(lab_end);
tcg_temp_free_ptr(tcg_shack_top);
tcg_temp_free_ptr(tcg_shack);
tcg_temp_free_ptr(tcg_top_host_eip);
tcg_temp_free(tcg_top_guest_eip);
tcg_temp_free(tcg_next_eip);
#endif
}
static void dec10_reg_alux(DisasContext *dc, int op)
{
int size = (dc->size & 1) + 1;
TCGv t;
LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
t = tcg_temp_new();
if (dc->ir & 32)
t_gen_sext(t, cpu_R[dc->src], size);
else
t_gen_zext(t, cpu_R[dc->src], size);
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
tcg_temp_free(t);
}
static void dec_nor(DisasContext *dc)
{
if (dc->format == OP_FMT_RI) {
LOG_DIS("nori r%d, r%d, %d\n", dc->r0, dc->r1,
zero_extend(dc->imm16, 16));
} else {
LOG_DIS("nor r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
}
if (dc->format == OP_FMT_RI) {
TCGv t0 = tcg_temp_new();
tcg_gen_movi_tl(t0, zero_extend(dc->imm16, 16));
tcg_gen_nor_tl(cpu_R[dc->r1], cpu_R[dc->r0], t0);
tcg_temp_free(t0);
} else {
tcg_gen_nor_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
}
}
static void dec10_reg_swap(DisasContext *dc)
{
TCGv t0;
LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
t0 = tcg_temp_new();
t_gen_mov_TN_reg(t0, dc->src);
if (dc->dst & 8)
tcg_gen_not_tl(t0, t0);
if (dc->dst & 4)
t_gen_swapw(t0, t0);
if (dc->dst & 2)
t_gen_swapb(t0, t0);
if (dc->dst & 1)
t_gen_swapr(t0, t0);
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
tcg_temp_free(t0);
}
static unsigned int dec10_ind_move_m_r(DisasContext *dc, unsigned int size)
{
unsigned int insn_len = 2;
TCGv t;
LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
t = tcg_temp_new();
insn_len += dec10_prep_move_m(dc, 0, size, t);
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size);
if (dc->dst == 15) {
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
cris_prepare_jmp(dc, JMP_INDIRECT);
dc->delayed_branch = 1;
return insn_len;
}
tcg_temp_free(t);
return insn_len;
}
static void dec_sl(DisasContext *dc)
{
if (dc->format == OP_FMT_RI) {
LOG_DIS("sli r%d, r%d, %d\n", dc->r1, dc->r0, dc->imm5);
} else {
LOG_DIS("sl r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
}
if (!(dc->features & LM32_FEATURE_SHIFT)) {
qemu_log_mask(LOG_GUEST_ERROR, "hardware shifter is not available\n");
t_gen_illegal_insn(dc);
return;
}
if (dc->format == OP_FMT_RI) {
tcg_gen_shli_tl(cpu_R[dc->r1], cpu_R[dc->r0], dc->imm5);
} else {
TCGv t0 = tcg_temp_new();
tcg_gen_andi_tl(t0, cpu_R[dc->r1], 0x1f);
tcg_gen_shl_tl(cpu_R[dc->r2], cpu_R[dc->r0], t0);
tcg_temp_free(t0);
}
}
/*
* pop_shack()
* Pop next host eip from shadow stack.
*/
void pop_shack(TCGv_ptr cpu_env, TCGv next_eip)
{
// labels
int label_end = gen_new_label();
// prepare registers
TCGv_ptr temp_shack_start = tcg_temp_local_new_ptr(); // store shack start
TCGv_ptr temp_shack_top = tcg_temp_local_new_ptr(); // store shack top
TCGv eip_on_shack = tcg_temp_local_new();
TCGv_ptr host_slot_addr = tcg_temp_local_new();
TCGv_ptr host_addr = tcg_temp_new();
// load common values
tcg_gen_ld_ptr(temp_shack_start, cpu_env, offsetof(CPUState, shack));
tcg_gen_ld_ptr(temp_shack_top, cpu_env, offsetof(CPUState, shack_top));
// check if stack empty?
tcg_gen_brcond_ptr(TCG_COND_EQ,temp_shack_top,temp_shack_start,label_end);
// stack not empty, pop one
tcg_gen_subi_ptr(temp_shack_top, temp_shack_top, sizeof(uint64_t)); // decrease top
tcg_gen_st_ptr(temp_shack_top, cpu_env, offsetof(CPUState, shack_top)); // store back top
tcg_gen_ld_tl(eip_on_shack, temp_shack_top, 0); // get eip
// check if the same?
tcg_gen_brcond_ptr(TCG_COND_NE,tcg_const_tl(next_eip),eip_on_shack,label_end); // go to "end" if not the same
tcg_gen_ld_tl(host_slot_addr, temp_shack_top, sizeof(unsigned long)); // get slot addr
tcg_gen_ld_ptr(host_addr, host_slot_addr, 0) ; // get host addr
tcg_gen_brcond_ptr(TCG_COND_EQ,tcg_const_tl(0),host_addr,label_end); // go to "end" if addr is zero
// jump!
*gen_opc_ptr++ = INDEX_op_jmp;
*gen_opparam_ptr++ = GET_TCGV_I32(host_addr);
// label: end
gen_set_label(label_end);
tcg_temp_free(eip_on_shack);
tcg_temp_free_ptr(host_slot_addr);
tcg_temp_free_ptr(host_addr);
tcg_temp_free_ptr(temp_shack_top);
tcg_temp_free_ptr(temp_shack_start);
}
static unsigned int dec10_ind(DisasContext *dc)
{
unsigned int insn_len = 2;
unsigned int size = dec10_size(dc->size);
uint32_t imm;
int32_t simm;
TCGv t[2];
if (dc->size != 3) {
switch (dc->opcode) {
case CRISV10_IND_MOVE_M_R:
return dec10_ind_move_m_r(dc, size);
break;
case CRISV10_IND_MOVE_R_M:
return dec10_ind_move_r_m(dc, size);
break;
case CRISV10_IND_CMP:
LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
insn_len += dec10_ind_alu(dc, CC_OP_CMP, size);
break;
case CRISV10_IND_TEST:
LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
cris_evaluate_flags(dc);
cris_cc_mask(dc, CC_MASK_NZVC);
cris_alu_m_alloc_temps(t);
insn_len += dec10_prep_move_m(dc, 0, size, t[0]);
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
t[0], tcg_const_tl(0), size);
cris_alu_m_free_temps(t);
break;
case CRISV10_IND_ADD:
LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
insn_len += dec10_ind_alu(dc, CC_OP_ADD, size);
break;
case CRISV10_IND_SUB:
LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
insn_len += dec10_ind_alu(dc, CC_OP_SUB, size);
break;
case CRISV10_IND_BOUND:
LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
insn_len += dec10_ind_bound(dc, size);
break;
case CRISV10_IND_AND:
LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
insn_len += dec10_ind_alu(dc, CC_OP_AND, size);
break;
case CRISV10_IND_OR:
LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
insn_len += dec10_ind_alu(dc, CC_OP_OR, size);
break;
case CRISV10_IND_MOVX:
insn_len = dec10_alux_m(dc, CC_OP_MOVE);
break;
case CRISV10_IND_ADDX:
insn_len = dec10_alux_m(dc, CC_OP_ADD);
break;
case CRISV10_IND_SUBX:
insn_len = dec10_alux_m(dc, CC_OP_SUB);
break;
case CRISV10_IND_CMPX:
insn_len = dec10_alux_m(dc, CC_OP_CMP);
break;
case CRISV10_IND_MUL:
/* This is a reg insn coded in the mem indir space. */
LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_mul(dc, size, dc->ir & (1 << 10));
break;
case CRISV10_IND_BDAP_M:
insn_len = dec10_bdap_m(dc, size);
break;
default:
LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
dc->pc, size, dc->opcode, dc->src, dc->dst);
cpu_abort(dc->env, "Unhandled opcode");
break;
}
return insn_len;
}
switch (dc->opcode) {
case CRISV10_IND_MOVE_M_SPR:
insn_len = dec10_ind_move_m_pr(dc);
break;
case CRISV10_IND_MOVE_SPR_M:
insn_len = dec10_ind_move_pr_m(dc);
break;
case CRISV10_IND_JUMP_M:
if (dc->src == 15) {
LOG_DIS("jump.%d %d r%d r%d direct\n", size,
dc->opcode, dc->src, dc->dst);
imm = ldl_code(dc->pc + 2);
if (dc->mode == CRISV10_MODE_AUTOINC)
insn_len += size;
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
dc->jmp_pc = imm;
cris_prepare_jmp(dc, JMP_DIRECT);
dc->delayed_branch--; /* v10 has no dslot here. */
} else {
if (dc->dst == 14) {
LOG_DIS("break %d\n", dc->src);
cris_evaluate_flags(dc);
tcg_gen_movi_tl(env_pc, dc->pc + 2);
t_gen_raise_exception(EXCP_BREAK);
dc->is_jmp = DISAS_UPDATE;
return insn_len;
}
LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
dc->opcode, dc->src, dc->dst);
t[0] = tcg_temp_new();
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
crisv10_prepare_memaddr(dc, t[0], size);
gen_load(dc, env_btarget, t[0], 4, 0);
insn_len += crisv10_post_memaddr(dc, size);
cris_prepare_jmp(dc, JMP_INDIRECT);
dc->delayed_branch--; /* v10 has no dslot here. */
tcg_temp_free(t[0]);
}
break;
case CRISV10_IND_MOVEM_R_M:
LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
dc->pc, dc->opcode, dc->dst, dc->src);
dec10_movem_r_m(dc);
break;
case CRISV10_IND_MOVEM_M_R:
LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
dec10_movem_m_r(dc);
break;
case CRISV10_IND_JUMP_R:
LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
dc->pc, dc->opcode, dc->dst, dc->src);
tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]);
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len));
cris_prepare_jmp(dc, JMP_INDIRECT);
dc->delayed_branch--; /* v10 has no dslot here. */
break;
case CRISV10_IND_MOVX:
insn_len = dec10_alux_m(dc, CC_OP_MOVE);
break;
case CRISV10_IND_ADDX:
insn_len = dec10_alux_m(dc, CC_OP_ADD);
break;
case CRISV10_IND_SUBX:
insn_len = dec10_alux_m(dc, CC_OP_SUB);
break;
case CRISV10_IND_CMPX:
insn_len = dec10_alux_m(dc, CC_OP_CMP);
break;
case CRISV10_IND_DIP:
insn_len = dec10_dip(dc);
break;
case CRISV10_IND_BCC_M:
cris_cc_mask(dc, 0);
imm = ldsw_code(dc->pc + 2);
simm = (int16_t)imm;
simm += 4;
LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
cris_prepare_cc_branch(dc, simm, dc->cond);
insn_len = 4;
break;
default:
LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
cpu_abort(dc->env, "Unhandled opcode");
break;
}
return insn_len;
}
static unsigned int dec10_reg(DisasContext *dc)
{
TCGv t;
unsigned int insn_len = 2;
unsigned int size = dec10_size(dc->size);
unsigned int tmp;
if (dc->size != 3) {
switch (dc->opcode) {
case CRISV10_REG_MOVE_R:
LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
if (dc->dst == 15) {
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]);
cris_prepare_jmp(dc, JMP_INDIRECT);
dc->delayed_branch = 1;
}
break;
case CRISV10_REG_MOVX:
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_movs(dc);
break;
case CRISV10_REG_ADDX:
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alux(dc, CC_OP_ADD);
break;
case CRISV10_REG_SUBX:
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alux(dc, CC_OP_SUB);
break;
case CRISV10_REG_ADD:
LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_ADD, size, 0);
break;
case CRISV10_REG_SUB:
LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_SUB, size, 0);
break;
case CRISV10_REG_CMP:
LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_CMP, size, 0);
break;
case CRISV10_REG_BOUND:
LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_bound(dc, size);
break;
case CRISV10_REG_AND:
LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_AND, size, 0);
break;
case CRISV10_REG_ADDI:
if (dc->src == 15) {
/* nop. */
return 2;
}
t = tcg_temp_new();
LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t);
tcg_temp_free(t);
break;
case CRISV10_REG_LSL:
LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_LSL, size, 0);
break;
case CRISV10_REG_LSR:
LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_LSR, size, 0);
break;
case CRISV10_REG_ASR:
LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_ASR, size, 1);
break;
case CRISV10_REG_OR:
LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_OR, size, 0);
break;
case CRISV10_REG_NEG:
LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_NEG, size, 0);
break;
case CRISV10_REG_BIAP:
LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
dc->opcode, dc->src, dc->dst, size);
switch (size) {
case 4: tmp = 2; break;
case 2: tmp = 1; break;
case 1: tmp = 0; break;
default:
cpu_abort(dc->env, "Unhandled BIAP");
break;
}
t = tcg_temp_new();
tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp);
if (dc->src == 15) {
tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1);
} else {
tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t);
}
tcg_temp_free(t);
cris_set_prefix(dc);
break;
default:
LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
dc->opcode, dc->src, dc->dst);
cpu_abort(dc->env, "Unhandled opcode");
break;
}
} else {
switch (dc->opcode) {
case CRISV10_REG_MOVX:
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_movs(dc);
break;
case CRISV10_REG_ADDX:
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alux(dc, CC_OP_ADD);
break;
case CRISV10_REG_SUBX:
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alux(dc, CC_OP_SUB);
break;
case CRISV10_REG_MOVE_SPR_R:
cris_evaluate_flags(dc);
cris_cc_mask(dc, 0);
dec10_reg_mov_pr(dc);
break;
case CRISV10_REG_MOVE_R_SPR:
LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
cris_evaluate_flags(dc);
if (dc->src != 11) /* fast for srp. */
dc->cpustate_changed = 1;
t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]);
break;
case CRISV10_REG_SETF:
case CRISV10_REG_CLEARF:
dec10_setclrf(dc);
break;
case CRISV10_REG_SWAP:
dec10_reg_swap(dc);
break;
case CRISV10_REG_ABS:
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_abs(dc);
break;
case CRISV10_REG_LZ:
LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_LZ, 4, 0);
break;
case CRISV10_REG_XOR:
LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
dec10_reg_alu(dc, CC_OP_XOR, 4, 0);
break;
case CRISV10_REG_BTST:
LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst],
cpu_R[dc->src], cpu_PR[PR_CCS]);
break;
case CRISV10_REG_DSTEP:
LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_cc_mask(dc, CC_MASK_NZVC);
cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst],
cpu_R[dc->dst], cpu_R[dc->src], 4);
break;
case CRISV10_REG_MSTEP:
LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
cris_evaluate_flags(dc);
cris_cc_mask(dc, CC_MASK_NZVC);
cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
cpu_R[dc->dst], cpu_R[dc->src], 4);
break;
case CRISV10_REG_SCC:
dec10_reg_scc(dc);
break;
default:
LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
dc->opcode, dc->src, dc->dst);
cpu_abort(dc->env, "Unhandled opcode");
break;
}
}
return insn_len;
}
