--- /dev/null
+/*
+ * CRISv10 emulation for qemu: main translation routines.
+ *
+ * Copyright (c) 2010 AXIS Communications AB
+ * Written by Edgar E. Iglesias.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "crisv10-decode.h"
+
+static const char *regnames_v10[] =
+{
+ "$r0", "$r1", "$r2", "$r3",
+ "$r4", "$r5", "$r6", "$r7",
+ "$r8", "$r9", "$r10", "$r11",
+ "$r12", "$r13", "$sp", "$pc",
+};
+
+static const char *pregnames_v10[] =
+{
+ "$bz", "$vr", "$p2", "$p3",
+ "$wz", "$ccr", "$p6-prefix", "$mof",
+ "$dz", "$ibr", "$irp", "$srp",
+ "$bar", "$dccr", "$brp", "$usp",
+};
+
+/* We need this table to handle preg-moves with implicit width. */
+static int preg_sizes_v10[] = {
+ 1, /* bz. */
+ 1, /* vr. */
+ 1, /* pid. */
+ 1, /* srs. */
+ 2, /* wz. */
+ 2, 2, 4,
+ 4, 4, 4, 4,
+ 4, 4, 4, 4,
+};
+
+static inline int dec10_size(unsigned int size)
+{
+ size++;
+ if (size == 3)
+ size++;
+ return size;
+}
+
+static inline void cris_illegal_insn(DisasContext *dc)
+{
+ qemu_log("illegal insn at pc=%x\n", dc->pc);
+ t_gen_raise_exception(EXCP_BREAK);
+}
+
+static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val,
+ unsigned int size, int mem_index)
+{
+ TCGLabel *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 gen_store_v10(DisasContext *dc, TCGv addr, TCGv val,
+ unsigned int size)
+{
+ int mem_index = cpu_mmu_index(&dc->cpu->env);
+
+ /* If we get a fault on a delayslot we must keep the jmp state in
+ the cpu-state to be able to re-execute the jmp. */
+ if (dc->delayed_branch == 1) {
+ cris_store_direct_jmp(dc);
+ }
+
+ /* Conditional writes. We only support the kind were X is known
+ at translation time. */
+ if (dc->flagx_known && dc->flags_x) {
+ gen_store_v10_conditional(dc, addr, val, size, mem_index);
+ return;
+ }
+
+ if (size == 1) {
+ tcg_gen_qemu_st8(val, addr, mem_index);
+ } else if (size == 2) {
+ tcg_gen_qemu_st16(val, addr, mem_index);
+ } else {
+ tcg_gen_qemu_st32(val, addr, mem_index);
+ }
+}
+
+
+/* Prefix flag and register are used to handle the more complex
+ addressing modes. */
+static void cris_set_prefix(DisasContext *dc)
+{
+ dc->clear_prefix = 0;
+ dc->tb_flags |= PFIX_FLAG;
+ tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG);
+
+ /* prefix insns dont clear the x flag. */
+ dc->clear_x = 0;
+ cris_lock_irq(dc);
+}
+
+static void crisv10_prepare_memaddr(DisasContext *dc,
+ TCGv addr, unsigned int size)
+{
+ if (dc->tb_flags & PFIX_FLAG) {
+ tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]);
+ } else {
+ tcg_gen_mov_tl(addr, cpu_R[dc->src]);
+ }
+}
+
+static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size)
+{
+ unsigned int insn_len = 0;
+
+ if (dc->tb_flags & PFIX_FLAG) {
+ if (dc->mode == CRISV10_MODE_AUTOINC) {
+ tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]);
+ }
+ } else {
+ if (dc->mode == CRISV10_MODE_AUTOINC) {
+ if (dc->src == 15) {
+ insn_len += size & ~1;
+ } else {
+ tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size);
+ }
+ }
+ }
+ return insn_len;
+}
+
+static int dec10_prep_move_m(CPUCRISState *env, 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 = cpu_ldsb_code(env, dc->pc + 2);
+ else
+ imm = cpu_ldsw_code(env, dc->pc + 2);
+ } else {
+ if (memsize == 1)
+ imm = cpu_ldub_code(env, dc->pc + 2);
+ else
+ imm = cpu_lduw_code(env, dc->pc + 2);
+ }
+ } else
+ imm = cpu_ldl_code(env, 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 unsigned int dec10_quick_imm(DisasContext *dc)
+{
+ int32_t imm, simm;
+ int op;
+
+ /* sign extend. */
+ imm = dc->ir & ((1 << 6) - 1);
+ simm = (int8_t) (imm << 2);
+ simm >>= 2;
+ switch (dc->opcode) {
+ case CRISV10_QIMM_BDAP_R0:
+ case CRISV10_QIMM_BDAP_R1:
+ case CRISV10_QIMM_BDAP_R2:
+ case CRISV10_QIMM_BDAP_R3:
+ simm = (int8_t)dc->ir;
+ LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
+ LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
+ dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
+ cris_set_prefix(dc);
+ if (dc->dst == 15) {
+ tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
+ } else {
+ tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
+ }
+ break;
+
+ case CRISV10_QIMM_MOVEQ:
+ LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(simm), 4);
+ break;
+ case CRISV10_QIMM_CMPQ:
+ LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(simm), 4);
+ break;
+ case CRISV10_QIMM_ADDQ:
+ LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(imm), 4);
+ break;
+ case CRISV10_QIMM_ANDQ:
+ LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_AND, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(simm), 4);
+ break;
+ case CRISV10_QIMM_ASHQ:
+ LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ op = imm & (1 << 5);
+ imm &= 0x1f;
+ if (op) {
+ cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(imm), 4);
+ } else {
+ /* BTST */
+ cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+ gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst],
+ tcg_const_tl(imm), cpu_PR[PR_CCS]);
+ }
+ break;
+ case CRISV10_QIMM_LSHQ:
+ LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
+
+ op = CC_OP_LSL;
+ if (imm & (1 << 5)) {
+ op = CC_OP_LSR;
+ }
+ imm &= 0x1f;
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, op, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(imm), 4);
+ break;
+ case CRISV10_QIMM_SUBQ:
+ LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(imm), 4);
+ break;
+ case CRISV10_QIMM_ORQ:
+ LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
+
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_OR, cpu_R[dc->dst],
+ cpu_R[dc->dst], tcg_const_tl(simm), 4);
+ break;
+
+ case CRISV10_QIMM_BCC_R0:
+ case CRISV10_QIMM_BCC_R1:
+ case CRISV10_QIMM_BCC_R2:
+ case CRISV10_QIMM_BCC_R3:
+ imm = dc->ir & 0xff;
+ /* bit 0 is a sign bit. */
+ if (imm & 1) {
+ imm |= 0xffffff00; /* sign extend. */
+ imm &= ~1; /* get rid of the sign bit. */
+ }
+ imm += 2;
+ LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
+
+ cris_cc_mask(dc, 0);
+ cris_prepare_cc_branch(dc, imm, dc->cond);
+ break;
+
+ default:
+ LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
+ dc->pc, dc->mode, dc->opcode, dc->src, dc->dst);
+ cpu_abort(CPU(dc->cpu), "Unhandled quickimm\n");
+ break;
+ }
+ return 2;
+}
+
+static unsigned int dec10_setclrf(DisasContext *dc)
+{
+ uint32_t flags;
+ unsigned int set = ~dc->opcode & 1;
+
+ flags = EXTRACT_FIELD(dc->ir, 0, 3)
+ | (EXTRACT_FIELD(dc->ir, 12, 15) << 4);
+ LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
+
+
+ if (flags & X_FLAG) {
+ dc->flagx_known = 1;
+ if (set)
+ dc->flags_x = X_FLAG;
+ else
+ dc->flags_x = 0;
+ }
+
+ cris_evaluate_flags (dc);
+ cris_update_cc_op(dc, CC_OP_FLAGS, 4);
+ cris_update_cc_x(dc);
+ tcg_gen_movi_tl(cc_op, dc->cc_op);
+
+ if (set) {
+ tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
+ } else {
+ tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS],
+ ~(flags|F_FLAG_V10|P_FLAG_V10));
+ }
+
+ dc->flags_uptodate = 1;
+ dc->clear_x = 0;
+ cris_lock_irq(dc);
+ return 2;
+}
+
+static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext,
+ TCGv dd, TCGv ds, TCGv sd, TCGv ss)
+{
+ if (sext) {
+ t_gen_sext(dd, sd, size);
+ t_gen_sext(ds, ss, size);
+ } else {
+ t_gen_zext(dd, sd, size);
+ t_gen_zext(ds, ss, size);
+ }
+}
+
+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 dec10_reg_bound(DisasContext *dc, int size)
+{
+ TCGv t;
+
+ t = tcg_temp_local_new();
+ t_gen_zext(t, cpu_R[dc->src], size);
+ cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
+ tcg_temp_free(t);
+}
+
+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 void dec10_reg_movs(DisasContext *dc)
+{
+ 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, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
+ tcg_temp_free(t);
+}
+
+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 dec10_reg_mov_pr(DisasContext *dc)
+{
+ LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
+ cris_lock_irq(dc);
+ if (dc->src == 15) {
+ tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]);
+ cris_prepare_jmp(dc, JMP_INDIRECT);
+ return;
+ }
+ if (dc->dst == PR_CCS) {
+ cris_evaluate_flags(dc);
+ }
+ cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src],
+ cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]);
+}
+
+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 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();
+ tcg_gen_mov_tl(t0, cpu_R[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 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)
+ {
+ TCGLabel *l1 = gen_new_label();
+ gen_tst_cc (dc, cpu_R[dc->src], cond);
+ 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);
+}
+
+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(CPU(dc->cpu), "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(CPU(dc->cpu), "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_env, 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, $r%d sz=%d\n", dc->src, dc->dst, size);
+ cris_evaluate_flags(dc);
+ cris_cc_mask(dc, CC_MASK_NZVC);
+ cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst],
+ cpu_R[dc->dst], cpu_R[dc->src], 4);
+ break;
+ case CRISV10_REG_SCC:
+ dec10_reg_scc(dc);
+ break;
+ default:
+ LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
+ dc->opcode, dc->src, dc->dst);
+ cpu_abort(CPU(dc->cpu), "Unhandled opcode");
+ break;
+ }
+ }
+ return insn_len;
+}
+
+static unsigned int dec10_ind_move_m_r(CPUCRISState *env, DisasContext *dc,
+ unsigned int size)
+{
+ unsigned int insn_len = 2;
+ TCGv t;
+
+ LOG_DIS("%s: move.%d [$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(env, 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 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 unsigned int dec10_ind_move_m_pr(CPUCRISState *env, 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(env, 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 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_movem_r_m(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->dst, dc->src, 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--) {
+ if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
+ gen_store_v10(dc, addr, t0, 4);
+ } else {
+ gen_store_v10(dc, addr, cpu_R[i], 4);
+ }
+ 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 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 int dec10_ind_alu(CPUCRISState *env, DisasContext *dc,
+ int op, unsigned int size)
+{
+ int insn_len = 0;
+ int rd = dc->dst;
+ TCGv t[2];
+
+ cris_alu_m_alloc_temps(t);
+ insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]);
+ cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], 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;
+ }
+
+ cris_alu_m_free_temps(t);
+
+ return insn_len;
+}
+
+static int dec10_ind_bound(CPUCRISState *env, DisasContext *dc,
+ unsigned int size)
+{
+ int insn_len = 0;
+ int rd = dc->dst;
+ TCGv t;
+
+ t = tcg_temp_local_new();
+ insn_len += dec10_prep_move_m(env, dc, 0, size, t);
+ cris_alu(dc, CC_OP_BOUND, 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_alux_m(CPUCRISState *env, 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(env, 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_dip(CPUCRISState *env, DisasContext *dc)
+{
+ int insn_len = 2;
+ uint32_t imm;
+
+ LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
+ dc->pc, dc->opcode, dc->src, dc->dst);
+ if (dc->src == 15) {
+ imm = cpu_ldl_code(env, dc->pc + 2);
+ tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm);
+ if (dc->postinc)
+ insn_len += 4;
+ tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2);
+ } else {
+ gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0);
+ if (dc->postinc)
+ tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
+ }
+
+ cris_set_prefix(dc);
+ return insn_len;
+}
+
+static int dec10_bdap_m(CPUCRISState *env, DisasContext *dc, int size)
+{
+ int insn_len = 2;
+ int rd = dc->dst;
+
+ LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
+ dc->pc, dc->opcode, dc->src, dc->dst, size);
+
+ assert(dc->dst != 15);
+#if 0
+ /* 8bit embedded offset? */
+ if (!dc->postinc && (dc->ir & (1 << 11))) {
+ int simm = dc->ir & 0xff;
+
+ /* cpu_abort(CPU(dc->cpu), "Unhandled opcode"); */
+ /* sign extended. */
+ simm = (int8_t)simm;
+
+ tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
+
+ cris_set_prefix(dc);
+ return insn_len;
+ }
+#endif
+ /* Now the rest of the modes are truly indirect. */
+ insn_len += dec10_prep_move_m(env, dc, 1, size, cpu_PR[PR_PREFIX]);
+ tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]);
+ cris_set_prefix(dc);
+ return insn_len;
+}
+
+static unsigned int dec10_ind(CPUCRISState *env, 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(env, 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(env, 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(env, 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(env, 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(env, 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(env, 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(env, 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(env, dc, CC_OP_OR, size);
+ break;
+ case CRISV10_IND_MOVX:
+ insn_len = dec10_alux_m(env, dc, CC_OP_MOVE);
+ break;
+ case CRISV10_IND_ADDX:
+ insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
+ break;
+ case CRISV10_IND_SUBX:
+ insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
+ break;
+ case CRISV10_IND_CMPX:
+ insn_len = dec10_alux_m(env, 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(env, 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(CPU(dc->cpu), "Unhandled opcode");
+ break;
+ }
+ return insn_len;
+ }
+
+ switch (dc->opcode) {
+ case CRISV10_IND_MOVE_M_SPR:
+ insn_len = dec10_ind_move_m_pr(env, 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 = cpu_ldl_code(env, 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_mov_env_TN(trap_vector, tcg_const_tl(dc->src + 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(env, dc, CC_OP_MOVE);
+ break;
+ case CRISV10_IND_ADDX:
+ insn_len = dec10_alux_m(env, dc, CC_OP_ADD);
+ break;
+ case CRISV10_IND_SUBX:
+ insn_len = dec10_alux_m(env, dc, CC_OP_SUB);
+ break;
+ case CRISV10_IND_CMPX:
+ insn_len = dec10_alux_m(env, dc, CC_OP_CMP);
+ break;
+ case CRISV10_IND_DIP:
+ insn_len = dec10_dip(env, dc);
+ break;
+ case CRISV10_IND_BCC_M:
+
+ cris_cc_mask(dc, 0);
+ imm = cpu_ldsw_code(env, 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(CPU(dc->cpu), "Unhandled opcode");
+ break;
+ }
+
+ return insn_len;
+}
+
+static unsigned int crisv10_decoder(CPUCRISState *env, DisasContext *dc)
+{
+ unsigned int insn_len = 2;
+
+ if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
+ tcg_gen_debug_insn_start(dc->pc);
+
+ /* Load a halfword onto the instruction register. */
+ dc->ir = cpu_lduw_code(env, dc->pc);
+
+ /* Now decode it. */
+ dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9);
+ dc->mode = EXTRACT_FIELD(dc->ir, 10, 11);
+ dc->src = EXTRACT_FIELD(dc->ir, 0, 3);
+ dc->size = EXTRACT_FIELD(dc->ir, 4, 5);
+ dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15);
+ dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
+
+ dc->clear_prefix = 1;
+
+ /* FIXME: What if this insn insn't 2 in length?? */
+ if (dc->src == 15 || dc->dst == 15)
+ tcg_gen_movi_tl(cpu_R[15], dc->pc + 2);
+
+ switch (dc->mode) {
+ case CRISV10_MODE_QIMMEDIATE:
+ insn_len = dec10_quick_imm(dc);
+ break;
+ case CRISV10_MODE_REG:
+ insn_len = dec10_reg(dc);
+ break;
+ case CRISV10_MODE_AUTOINC:
+ case CRISV10_MODE_INDIRECT:
+ insn_len = dec10_ind(env, dc);
+ break;
+ }
+
+ if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
+ dc->tb_flags &= ~PFIX_FLAG;
+ tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG);
+ if (dc->tb_flags != dc->tb->flags) {
+ dc->cpustate_changed = 1;
+ }
+ }
+
+ /* CRISv10 locks out interrupts on dslots. */
+ if (dc->delayed_branch == 2) {
+ cris_lock_irq(dc);
+ }
+ return insn_len;
+}
+
+void cris_initialize_crisv10_tcg(void)
+{
+ int i;
+
+ cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+ cc_x = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, cc_x), "cc_x");
+ cc_src = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, cc_src), "cc_src");
+ cc_dest = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, cc_dest),
+ "cc_dest");
+ cc_result = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, cc_result),
+ "cc_result");
+ cc_op = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, cc_op), "cc_op");
+ cc_size = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, cc_size),
+ "cc_size");
+ cc_mask = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, cc_mask),
+ "cc_mask");
+
+ env_pc = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, pc),
+ "pc");
+ env_btarget = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, btarget),
+ "btarget");
+ env_btaken = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, btaken),
+ "btaken");
+ for (i = 0; i < 16; i++) {
+ cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, regs[i]),
+ regnames_v10[i]);
+ }
+ for (i = 0; i < 16; i++) {
+ cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUCRISState, pregs[i]),
+ pregnames_v10[i]);
+ }
+}
Code Review / kvmfornfv.git / blobdiff