| /* |
| * 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 "qemu/osdep.h" |
| #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_mask(LOG_GUEST_ERROR, "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, false); |
| |
| /* 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); |
| |
| gen_tst_cc(dc, cpu_R[dc->src], cond); |
| tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->src], cpu_R[dc->src], 0); |
| |
| 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; |
| |
| /* 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]); |
| } |
| } |
