root / target-cris / translate_v10.c @ 43dc2a64
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/*
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* CRISv10 emulation for qemu: main translation routines.
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*
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* Copyright (c) 2010 AXIS Communications AB
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* Written by Edgar E. Iglesias.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "crisv10-decode.h" |
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static const char *regnames_v10[] = |
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{
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"$r0", "$r1", "$r2", "$r3", |
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"$r4", "$r5", "$r6", "$r7", |
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"$r8", "$r9", "$r10", "$r11", |
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"$r12", "$r13", "$sp", "$pc", |
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}; |
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static const char *pregnames_v10[] = |
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{
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"$bz", "$vr", "$p2", "$p3", |
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"$wz", "$ccr", "$p6-prefix", "$mof", |
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"$dz", "$ibr", "$irp", "$srp", |
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"$bar", "$dccr", "$brp", "$usp", |
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}; |
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|
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/* We need this table to handle preg-moves with implicit width. */
|
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static int preg_sizes_v10[] = { |
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1, /* bz. */ |
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1, /* vr. */ |
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1, /* pid. */ |
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1, /* srs. */ |
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2, /* wz. */ |
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2, 2, 4, |
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4, 4, 4, 4, |
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4, 4, 4, 4, |
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}; |
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|
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static inline int dec10_size(unsigned int size) |
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{
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size++; |
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if (size == 3) |
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size++; |
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return size;
|
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} |
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|
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static inline void cris_illegal_insn(DisasContext *dc) |
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{
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qemu_log("illegal insn at pc=%x\n", dc->pc);
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t_gen_raise_exception(EXCP_BREAK); |
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} |
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|
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/* Prefix flag and register are used to handle the more complex
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addressing modes. */
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static void cris_set_prefix(DisasContext *dc) |
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{
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dc->clear_prefix = 0;
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dc->tb_flags |= PFIX_FLAG; |
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tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG); |
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|
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/* prefix insns dont clear the x flag. */
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dc->clear_x = 0;
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cris_lock_irq(dc); |
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} |
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|
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static void crisv10_prepare_memaddr(DisasContext *dc, |
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TCGv addr, unsigned int size) |
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{
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if (dc->tb_flags & PFIX_FLAG) {
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tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]); |
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} else {
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tcg_gen_mov_tl(addr, cpu_R[dc->src]); |
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} |
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} |
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|
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static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size) |
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{
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unsigned int insn_len = 0; |
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|
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if (dc->tb_flags & PFIX_FLAG) {
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if (dc->mode == CRISV10_MODE_AUTOINC) {
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tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]); |
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} |
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} else {
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if (dc->mode == CRISV10_MODE_AUTOINC) {
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if (dc->src == 15) { |
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insn_len += size & ~1;
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} else {
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tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size); |
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} |
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} |
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} |
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return insn_len;
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} |
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|
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static int dec10_prep_move_m(DisasContext *dc, int s_ext, int memsize, |
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TCGv dst) |
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{
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unsigned int rs, rd; |
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uint32_t imm; |
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int is_imm;
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int insn_len = 0; |
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rs = dc->src; |
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rd = dc->dst; |
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is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
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LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
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rs, rd, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG); |
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/* Load [$rs] onto T1. */
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if (is_imm) {
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if (memsize != 4) { |
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if (s_ext) {
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if (memsize == 1) |
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imm = ldsb_code(dc->pc + 2);
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else
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imm = ldsw_code(dc->pc + 2);
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} else {
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if (memsize == 1) |
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imm = ldub_code(dc->pc + 2);
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else
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imm = lduw_code(dc->pc + 2);
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} |
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} else
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imm = ldl_code(dc->pc + 2);
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tcg_gen_movi_tl(dst, imm); |
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if (dc->mode == CRISV10_MODE_AUTOINC) {
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insn_len += memsize; |
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if (memsize == 1) |
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insn_len++; |
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tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len); |
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} |
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} else {
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TCGv addr; |
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addr = tcg_temp_new(); |
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cris_flush_cc_state(dc); |
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crisv10_prepare_memaddr(dc, addr, memsize); |
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gen_load(dc, dst, addr, memsize, 0);
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if (s_ext)
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t_gen_sext(dst, dst, memsize); |
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else
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t_gen_zext(dst, dst, memsize); |
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insn_len += crisv10_post_memaddr(dc, memsize); |
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tcg_temp_free(addr); |
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} |
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if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
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dc->dst = dc->src; |
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} |
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return insn_len;
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} |
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static unsigned int dec10_quick_imm(DisasContext *dc) |
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{
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int32_t imm, simm; |
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int op;
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/* sign extend. */
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imm = dc->ir & ((1 << 6) - 1); |
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simm = (int8_t) (imm << 2);
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simm >>= 2;
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switch (dc->opcode) {
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case CRISV10_QIMM_BDAP_R0:
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case CRISV10_QIMM_BDAP_R1:
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case CRISV10_QIMM_BDAP_R2:
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case CRISV10_QIMM_BDAP_R3:
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simm = (int8_t)dc->ir; |
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LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
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LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
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dc->pc, dc->mode, dc->opcode, dc->src, dc->dst); |
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cris_set_prefix(dc); |
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if (dc->dst == 15) { |
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tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
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} else {
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tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm); |
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} |
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break;
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|
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case CRISV10_QIMM_MOVEQ:
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LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
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cris_cc_mask(dc, CC_MASK_NZVC); |
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cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(simm), 4);
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break;
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case CRISV10_QIMM_CMPQ:
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LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
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cris_cc_mask(dc, CC_MASK_NZVC); |
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cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(simm), 4);
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break;
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case CRISV10_QIMM_ADDQ:
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LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
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cris_cc_mask(dc, CC_MASK_NZVC); |
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cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
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break;
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case CRISV10_QIMM_ANDQ:
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LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
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|
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cris_cc_mask(dc, CC_MASK_NZVC); |
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cris_alu(dc, CC_OP_AND, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(simm), 4);
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break;
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case CRISV10_QIMM_ASHQ:
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LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
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cris_cc_mask(dc, CC_MASK_NZVC); |
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op = imm & (1 << 5); |
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imm &= 0x1f;
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if (op) {
|
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cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
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} else {
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/* BTST */
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cris_update_cc_op(dc, CC_OP_FLAGS, 4);
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gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst], |
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tcg_const_tl(imm), cpu_PR[PR_CCS]); |
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} |
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break;
|
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case CRISV10_QIMM_LSHQ:
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LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
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|
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op = CC_OP_LSL; |
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if (imm & (1 << 5)) { |
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op = CC_OP_LSR; |
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} |
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imm &= 0x1f;
|
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cris_cc_mask(dc, CC_MASK_NZVC); |
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cris_alu(dc, op, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
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break;
|
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case CRISV10_QIMM_SUBQ:
|
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LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
|
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|
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cris_cc_mask(dc, CC_MASK_NZVC); |
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cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
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break;
|
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case CRISV10_QIMM_ORQ:
|
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LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
|
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|
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cris_cc_mask(dc, CC_MASK_NZVC); |
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cris_alu(dc, CC_OP_OR, cpu_R[dc->dst], |
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cpu_R[dc->dst], tcg_const_tl(simm), 4);
|
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break;
|
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|
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case CRISV10_QIMM_BCC_R0:
|
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if (!dc->ir) {
|
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cpu_abort(dc->env, "opcode zero\n");
|
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} |
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case CRISV10_QIMM_BCC_R1:
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case CRISV10_QIMM_BCC_R2:
|
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case CRISV10_QIMM_BCC_R3:
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imm = dc->ir & 0xff;
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/* bit 0 is a sign bit. */
|
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if (imm & 1) { |
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imm |= 0xffffff00; /* sign extend. */ |
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imm &= ~1; /* get rid of the sign bit. */ |
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} |
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imm += 2;
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LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
|
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|
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cris_cc_mask(dc, 0);
|
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cris_prepare_cc_branch(dc, imm, dc->cond); |
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break;
|
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|
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default:
|
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LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
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dc->pc, dc->mode, dc->opcode, dc->src, dc->dst); |
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cpu_abort(dc->env, "Unhandled quickimm\n");
|
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break;
|
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} |
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return 2; |
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} |
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|
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static unsigned int dec10_setclrf(DisasContext *dc) |
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{
|
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uint32_t flags; |
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unsigned int set = ~dc->opcode & 1; |
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|
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flags = EXTRACT_FIELD(dc->ir, 0, 3) |
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| (EXTRACT_FIELD(dc->ir, 12, 15) << 4); |
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LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
|
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|
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|
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if (flags & X_FLAG) {
|
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dc->flagx_known = 1;
|
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if (set)
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dc->flags_x = X_FLAG; |
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else
|
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dc->flags_x = 0;
|
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} |
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|
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cris_evaluate_flags (dc); |
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cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
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cris_update_cc_x(dc); |
| 315 |
tcg_gen_movi_tl(cc_op, dc->cc_op); |
| 316 |
|
| 317 |
if (set) {
|
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tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); |
| 319 |
} else {
|
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tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags); |
| 321 |
} |
| 322 |
|
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dc->flags_uptodate = 1;
|
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dc->clear_x = 0;
|
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cris_lock_irq(dc); |
| 326 |
return 2; |
| 327 |
} |
| 328 |
|
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static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext, |
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TCGv dd, TCGv ds, TCGv sd, TCGv ss) |
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{
|
| 332 |
if (sext) {
|
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t_gen_sext(dd, sd, size); |
| 334 |
t_gen_sext(ds, ss, size); |
| 335 |
} else {
|
| 336 |
t_gen_zext(dd, sd, size); |
| 337 |
t_gen_zext(ds, ss, size); |
| 338 |
} |
| 339 |
} |
| 340 |
|
| 341 |
static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext) |
| 342 |
{
|
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TCGv t[2];
|
| 344 |
|
| 345 |
t[0] = tcg_temp_new();
|
| 346 |
t[1] = tcg_temp_new();
|
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dec10_reg_prep_sext(dc, size, sext, |
| 348 |
t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]); |
| 349 |
|
| 350 |
if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
|
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tcg_gen_andi_tl(t[1], t[1], 63); |
| 352 |
} |
| 353 |
|
| 354 |
assert(dc->dst != 15);
|
| 355 |
cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size); |
| 356 |
tcg_temp_free(t[0]);
|
| 357 |
tcg_temp_free(t[1]);
|
| 358 |
} |
| 359 |
|
| 360 |
static void dec10_reg_bound(DisasContext *dc, int size) |
| 361 |
{
|
| 362 |
TCGv t; |
| 363 |
|
| 364 |
t = tcg_temp_local_new(); |
| 365 |
t_gen_zext(t, cpu_R[dc->src], size); |
| 366 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
|
| 367 |
tcg_temp_free(t); |
| 368 |
} |
| 369 |
|
| 370 |
static void dec10_reg_mul(DisasContext *dc, int size, int sext) |
| 371 |
{
|
| 372 |
int op = sext ? CC_OP_MULS : CC_OP_MULU;
|
| 373 |
TCGv t[2];
|
| 374 |
|
| 375 |
t[0] = tcg_temp_new();
|
| 376 |
t[1] = tcg_temp_new();
|
| 377 |
dec10_reg_prep_sext(dc, size, sext, |
| 378 |
t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]); |
| 379 |
|
| 380 |
cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4); |
| 381 |
|
| 382 |
tcg_temp_free(t[0]);
|
| 383 |
tcg_temp_free(t[1]);
|
| 384 |
} |
| 385 |
|
| 386 |
|
| 387 |
static void dec10_reg_movs(DisasContext *dc) |
| 388 |
{
|
| 389 |
int size = (dc->size & 1) + 1; |
| 390 |
TCGv t; |
| 391 |
|
| 392 |
LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
|
| 393 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 394 |
|
| 395 |
t = tcg_temp_new(); |
| 396 |
if (dc->ir & 32) |
| 397 |
t_gen_sext(t, cpu_R[dc->src], size); |
| 398 |
else
|
| 399 |
t_gen_zext(t, cpu_R[dc->src], size); |
| 400 |
|
| 401 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
|
| 402 |
tcg_temp_free(t); |
| 403 |
} |
| 404 |
|
| 405 |
static void dec10_reg_alux(DisasContext *dc, int op) |
| 406 |
{
|
| 407 |
int size = (dc->size & 1) + 1; |
| 408 |
TCGv t; |
| 409 |
|
| 410 |
LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
|
| 411 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 412 |
|
| 413 |
t = tcg_temp_new(); |
| 414 |
if (dc->ir & 32) |
| 415 |
t_gen_sext(t, cpu_R[dc->src], size); |
| 416 |
else
|
| 417 |
t_gen_zext(t, cpu_R[dc->src], size); |
| 418 |
|
| 419 |
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
|
| 420 |
tcg_temp_free(t); |
| 421 |
} |
| 422 |
|
| 423 |
static void dec10_reg_mov_pr(DisasContext *dc) |
| 424 |
{
|
| 425 |
LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
|
| 426 |
cris_lock_irq(dc); |
| 427 |
if (dc->src == 15) { |
| 428 |
tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]); |
| 429 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 430 |
return;
|
| 431 |
} |
| 432 |
if (dc->dst == PR_CCS) {
|
| 433 |
cris_evaluate_flags(dc); |
| 434 |
} |
| 435 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], |
| 436 |
cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]); |
| 437 |
} |
| 438 |
|
| 439 |
static void dec10_reg_abs(DisasContext *dc) |
| 440 |
{
|
| 441 |
TCGv t0; |
| 442 |
|
| 443 |
LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
|
| 444 |
|
| 445 |
assert(dc->dst != 15);
|
| 446 |
t0 = tcg_temp_new(); |
| 447 |
tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
|
| 448 |
tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0); |
| 449 |
tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0); |
| 450 |
|
| 451 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
|
| 452 |
tcg_temp_free(t0); |
| 453 |
} |
| 454 |
|
| 455 |
static void dec10_reg_swap(DisasContext *dc) |
| 456 |
{
|
| 457 |
TCGv t0; |
| 458 |
|
| 459 |
LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
|
| 460 |
|
| 461 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 462 |
t0 = tcg_temp_new(); |
| 463 |
t_gen_mov_TN_reg(t0, dc->src); |
| 464 |
if (dc->dst & 8) |
| 465 |
tcg_gen_not_tl(t0, t0); |
| 466 |
if (dc->dst & 4) |
| 467 |
t_gen_swapw(t0, t0); |
| 468 |
if (dc->dst & 2) |
| 469 |
t_gen_swapb(t0, t0); |
| 470 |
if (dc->dst & 1) |
| 471 |
t_gen_swapr(t0, t0); |
| 472 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
|
| 473 |
tcg_temp_free(t0); |
| 474 |
} |
| 475 |
|
| 476 |
static void dec10_reg_scc(DisasContext *dc) |
| 477 |
{
|
| 478 |
int cond = dc->dst;
|
| 479 |
|
| 480 |
LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
|
| 481 |
|
| 482 |
if (cond != CC_A)
|
| 483 |
{
|
| 484 |
int l1;
|
| 485 |
|
| 486 |
gen_tst_cc (dc, cpu_R[dc->src], cond); |
| 487 |
l1 = gen_new_label(); |
| 488 |
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->src], 0, l1);
|
| 489 |
tcg_gen_movi_tl(cpu_R[dc->src], 1);
|
| 490 |
gen_set_label(l1); |
| 491 |
} else {
|
| 492 |
tcg_gen_movi_tl(cpu_R[dc->src], 1);
|
| 493 |
} |
| 494 |
|
| 495 |
cris_cc_mask(dc, 0);
|
| 496 |
} |
| 497 |
|
| 498 |
static unsigned int dec10_reg(DisasContext *dc) |
| 499 |
{
|
| 500 |
TCGv t; |
| 501 |
unsigned int insn_len = 2; |
| 502 |
unsigned int size = dec10_size(dc->size); |
| 503 |
unsigned int tmp; |
| 504 |
|
| 505 |
if (dc->size != 3) { |
| 506 |
switch (dc->opcode) {
|
| 507 |
case CRISV10_REG_MOVE_R:
|
| 508 |
LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
|
| 509 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 510 |
dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
|
| 511 |
if (dc->dst == 15) { |
| 512 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
| 513 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 514 |
dc->delayed_branch = 1;
|
| 515 |
} |
| 516 |
break;
|
| 517 |
case CRISV10_REG_MOVX:
|
| 518 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 519 |
dec10_reg_movs(dc); |
| 520 |
break;
|
| 521 |
case CRISV10_REG_ADDX:
|
| 522 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 523 |
dec10_reg_alux(dc, CC_OP_ADD); |
| 524 |
break;
|
| 525 |
case CRISV10_REG_SUBX:
|
| 526 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 527 |
dec10_reg_alux(dc, CC_OP_SUB); |
| 528 |
break;
|
| 529 |
case CRISV10_REG_ADD:
|
| 530 |
LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 531 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 532 |
dec10_reg_alu(dc, CC_OP_ADD, size, 0);
|
| 533 |
break;
|
| 534 |
case CRISV10_REG_SUB:
|
| 535 |
LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 536 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 537 |
dec10_reg_alu(dc, CC_OP_SUB, size, 0);
|
| 538 |
break;
|
| 539 |
case CRISV10_REG_CMP:
|
| 540 |
LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 541 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 542 |
dec10_reg_alu(dc, CC_OP_CMP, size, 0);
|
| 543 |
break;
|
| 544 |
case CRISV10_REG_BOUND:
|
| 545 |
LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 546 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 547 |
dec10_reg_bound(dc, size); |
| 548 |
break;
|
| 549 |
case CRISV10_REG_AND:
|
| 550 |
LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 551 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 552 |
dec10_reg_alu(dc, CC_OP_AND, size, 0);
|
| 553 |
break;
|
| 554 |
case CRISV10_REG_ADDI:
|
| 555 |
if (dc->src == 15) { |
| 556 |
/* nop. */
|
| 557 |
return 2; |
| 558 |
} |
| 559 |
t = tcg_temp_new(); |
| 560 |
LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
|
| 561 |
tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
|
| 562 |
tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t); |
| 563 |
tcg_temp_free(t); |
| 564 |
break;
|
| 565 |
case CRISV10_REG_LSL:
|
| 566 |
LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 567 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 568 |
dec10_reg_alu(dc, CC_OP_LSL, size, 0);
|
| 569 |
break;
|
| 570 |
case CRISV10_REG_LSR:
|
| 571 |
LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 572 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 573 |
dec10_reg_alu(dc, CC_OP_LSR, size, 0);
|
| 574 |
break;
|
| 575 |
case CRISV10_REG_ASR:
|
| 576 |
LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 577 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 578 |
dec10_reg_alu(dc, CC_OP_ASR, size, 1);
|
| 579 |
break;
|
| 580 |
case CRISV10_REG_OR:
|
| 581 |
LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 582 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 583 |
dec10_reg_alu(dc, CC_OP_OR, size, 0);
|
| 584 |
break;
|
| 585 |
case CRISV10_REG_NEG:
|
| 586 |
LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 587 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 588 |
dec10_reg_alu(dc, CC_OP_NEG, size, 0);
|
| 589 |
break;
|
| 590 |
case CRISV10_REG_BIAP:
|
| 591 |
LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
|
| 592 |
dc->opcode, dc->src, dc->dst, size); |
| 593 |
switch (size) {
|
| 594 |
case 4: tmp = 2; break; |
| 595 |
case 2: tmp = 1; break; |
| 596 |
case 1: tmp = 0; break; |
| 597 |
default:
|
| 598 |
cpu_abort(dc->env, "Unhandled BIAP");
|
| 599 |
break;
|
| 600 |
} |
| 601 |
|
| 602 |
t = tcg_temp_new(); |
| 603 |
tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp); |
| 604 |
if (dc->src == 15) { |
| 605 |
tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1); |
| 606 |
} else {
|
| 607 |
tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t); |
| 608 |
} |
| 609 |
tcg_temp_free(t); |
| 610 |
cris_set_prefix(dc); |
| 611 |
break;
|
| 612 |
|
| 613 |
default:
|
| 614 |
LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
|
| 615 |
dc->opcode, dc->src, dc->dst); |
| 616 |
cpu_abort(dc->env, "Unhandled opcode");
|
| 617 |
break;
|
| 618 |
} |
| 619 |
} else {
|
| 620 |
switch (dc->opcode) {
|
| 621 |
case CRISV10_REG_MOVX:
|
| 622 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 623 |
dec10_reg_movs(dc); |
| 624 |
break;
|
| 625 |
case CRISV10_REG_ADDX:
|
| 626 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 627 |
dec10_reg_alux(dc, CC_OP_ADD); |
| 628 |
break;
|
| 629 |
case CRISV10_REG_SUBX:
|
| 630 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 631 |
dec10_reg_alux(dc, CC_OP_SUB); |
| 632 |
break;
|
| 633 |
case CRISV10_REG_MOVE_SPR_R:
|
| 634 |
cris_evaluate_flags(dc); |
| 635 |
cris_cc_mask(dc, 0);
|
| 636 |
dec10_reg_mov_pr(dc); |
| 637 |
break;
|
| 638 |
case CRISV10_REG_MOVE_R_SPR:
|
| 639 |
LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
|
| 640 |
cris_evaluate_flags(dc); |
| 641 |
if (dc->src != 11) /* fast for srp. */ |
| 642 |
dc->cpustate_changed = 1;
|
| 643 |
t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]); |
| 644 |
break;
|
| 645 |
case CRISV10_REG_SETF:
|
| 646 |
case CRISV10_REG_CLEARF:
|
| 647 |
dec10_setclrf(dc); |
| 648 |
break;
|
| 649 |
case CRISV10_REG_SWAP:
|
| 650 |
dec10_reg_swap(dc); |
| 651 |
break;
|
| 652 |
case CRISV10_REG_ABS:
|
| 653 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 654 |
dec10_reg_abs(dc); |
| 655 |
break;
|
| 656 |
case CRISV10_REG_LZ:
|
| 657 |
LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 658 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 659 |
dec10_reg_alu(dc, CC_OP_LZ, 4, 0); |
| 660 |
break;
|
| 661 |
case CRISV10_REG_XOR:
|
| 662 |
LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 663 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 664 |
dec10_reg_alu(dc, CC_OP_XOR, 4, 0); |
| 665 |
break;
|
| 666 |
case CRISV10_REG_BTST:
|
| 667 |
LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 668 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 669 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
| 670 |
gen_helper_btst(cpu_PR[PR_CCS], cpu_R[dc->dst], |
| 671 |
cpu_R[dc->src], cpu_PR[PR_CCS]); |
| 672 |
break;
|
| 673 |
case CRISV10_REG_DSTEP:
|
| 674 |
LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 675 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 676 |
cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst], |
| 677 |
cpu_R[dc->dst], cpu_R[dc->src], 4);
|
| 678 |
break;
|
| 679 |
case CRISV10_REG_MSTEP:
|
| 680 |
LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
| 681 |
cris_evaluate_flags(dc); |
| 682 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 683 |
cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst], |
| 684 |
cpu_R[dc->dst], cpu_R[dc->src], 4);
|
| 685 |
break;
|
| 686 |
case CRISV10_REG_SCC:
|
| 687 |
dec10_reg_scc(dc); |
| 688 |
break;
|
| 689 |
default:
|
| 690 |
LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
|
| 691 |
dc->opcode, dc->src, dc->dst); |
| 692 |
cpu_abort(dc->env, "Unhandled opcode");
|
| 693 |
break;
|
| 694 |
} |
| 695 |
} |
| 696 |
return insn_len;
|
| 697 |
} |
| 698 |
|
| 699 |
static unsigned int dec10_ind_move_m_r(DisasContext *dc, unsigned int size) |
| 700 |
{
|
| 701 |
unsigned int insn_len = 2; |
| 702 |
TCGv t; |
| 703 |
|
| 704 |
LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
|
| 705 |
size, dc->src, dc->dst); |
| 706 |
|
| 707 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 708 |
t = tcg_temp_new(); |
| 709 |
insn_len += dec10_prep_move_m(dc, 0, size, t);
|
| 710 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size); |
| 711 |
if (dc->dst == 15) { |
| 712 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
| 713 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 714 |
dc->delayed_branch = 1;
|
| 715 |
return insn_len;
|
| 716 |
} |
| 717 |
|
| 718 |
tcg_temp_free(t); |
| 719 |
return insn_len;
|
| 720 |
} |
| 721 |
|
| 722 |
static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size) |
| 723 |
{
|
| 724 |
unsigned int insn_len = 2; |
| 725 |
TCGv addr; |
| 726 |
|
| 727 |
LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
|
| 728 |
addr = tcg_temp_new(); |
| 729 |
crisv10_prepare_memaddr(dc, addr, size); |
| 730 |
gen_store(dc, addr, cpu_R[dc->dst], size); |
| 731 |
insn_len += crisv10_post_memaddr(dc, size); |
| 732 |
|
| 733 |
return insn_len;
|
| 734 |
} |
| 735 |
|
| 736 |
static unsigned int dec10_ind_move_m_pr(DisasContext *dc) |
| 737 |
{
|
| 738 |
unsigned int insn_len = 2, rd = dc->dst; |
| 739 |
TCGv t, addr; |
| 740 |
|
| 741 |
LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
|
| 742 |
cris_lock_irq(dc); |
| 743 |
|
| 744 |
addr = tcg_temp_new(); |
| 745 |
t = tcg_temp_new(); |
| 746 |
insn_len += dec10_prep_move_m(dc, 0, 4, t); |
| 747 |
if (rd == 15) { |
| 748 |
tcg_gen_mov_tl(env_btarget, t); |
| 749 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 750 |
dc->delayed_branch = 1;
|
| 751 |
return insn_len;
|
| 752 |
} |
| 753 |
|
| 754 |
tcg_gen_mov_tl(cpu_PR[rd], t); |
| 755 |
dc->cpustate_changed = 1;
|
| 756 |
tcg_temp_free(addr); |
| 757 |
tcg_temp_free(t); |
| 758 |
return insn_len;
|
| 759 |
} |
| 760 |
|
| 761 |
static unsigned int dec10_ind_move_pr_m(DisasContext *dc) |
| 762 |
{
|
| 763 |
unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst]; |
| 764 |
TCGv addr, t0; |
| 765 |
|
| 766 |
LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
|
| 767 |
|
| 768 |
addr = tcg_temp_new(); |
| 769 |
crisv10_prepare_memaddr(dc, addr, size); |
| 770 |
if (dc->dst == PR_CCS) {
|
| 771 |
t0 = tcg_temp_new(); |
| 772 |
cris_evaluate_flags(dc); |
| 773 |
tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG); |
| 774 |
gen_store(dc, addr, t0, size); |
| 775 |
tcg_temp_free(t0); |
| 776 |
} else {
|
| 777 |
gen_store(dc, addr, cpu_PR[dc->dst], size); |
| 778 |
} |
| 779 |
t0 = tcg_temp_new(); |
| 780 |
insn_len += crisv10_post_memaddr(dc, size); |
| 781 |
cris_lock_irq(dc); |
| 782 |
|
| 783 |
return insn_len;
|
| 784 |
} |
| 785 |
|
| 786 |
static void dec10_movem_r_m(DisasContext *dc) |
| 787 |
{
|
| 788 |
int i, pfix = dc->tb_flags & PFIX_FLAG;
|
| 789 |
TCGv addr, t0; |
| 790 |
|
| 791 |
LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
|
| 792 |
dc->dst, dc->src, dc->postinc, dc->ir); |
| 793 |
|
| 794 |
addr = tcg_temp_new(); |
| 795 |
t0 = tcg_temp_new(); |
| 796 |
crisv10_prepare_memaddr(dc, addr, 4);
|
| 797 |
tcg_gen_mov_tl(t0, addr); |
| 798 |
for (i = dc->dst; i >= 0; i--) { |
| 799 |
if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
|
| 800 |
gen_store(dc, addr, t0, 4);
|
| 801 |
} else {
|
| 802 |
gen_store(dc, addr, cpu_R[i], 4);
|
| 803 |
} |
| 804 |
tcg_gen_addi_tl(addr, addr, 4);
|
| 805 |
} |
| 806 |
|
| 807 |
if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
| 808 |
tcg_gen_mov_tl(cpu_R[dc->src], t0); |
| 809 |
} |
| 810 |
|
| 811 |
if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
| 812 |
tcg_gen_mov_tl(cpu_R[dc->src], addr); |
| 813 |
} |
| 814 |
tcg_temp_free(addr); |
| 815 |
tcg_temp_free(t0); |
| 816 |
} |
| 817 |
|
| 818 |
static void dec10_movem_m_r(DisasContext *dc) |
| 819 |
{
|
| 820 |
int i, pfix = dc->tb_flags & PFIX_FLAG;
|
| 821 |
TCGv addr, t0; |
| 822 |
|
| 823 |
LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
|
| 824 |
dc->src, dc->dst, dc->postinc, dc->ir); |
| 825 |
|
| 826 |
addr = tcg_temp_new(); |
| 827 |
t0 = tcg_temp_new(); |
| 828 |
crisv10_prepare_memaddr(dc, addr, 4);
|
| 829 |
tcg_gen_mov_tl(t0, addr); |
| 830 |
for (i = dc->dst; i >= 0; i--) { |
| 831 |
gen_load(dc, cpu_R[i], addr, 4, 0); |
| 832 |
tcg_gen_addi_tl(addr, addr, 4);
|
| 833 |
} |
| 834 |
|
| 835 |
if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
| 836 |
tcg_gen_mov_tl(cpu_R[dc->src], t0); |
| 837 |
} |
| 838 |
|
| 839 |
if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
| 840 |
tcg_gen_mov_tl(cpu_R[dc->src], addr); |
| 841 |
} |
| 842 |
tcg_temp_free(addr); |
| 843 |
tcg_temp_free(t0); |
| 844 |
} |
| 845 |
|
| 846 |
static int dec10_ind_alu(DisasContext *dc, int op, unsigned int size) |
| 847 |
{
|
| 848 |
int insn_len = 0; |
| 849 |
int rd = dc->dst;
|
| 850 |
TCGv t[2];
|
| 851 |
|
| 852 |
cris_alu_m_alloc_temps(t); |
| 853 |
insn_len += dec10_prep_move_m(dc, 0, size, t[0]); |
| 854 |
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
|
| 855 |
if (dc->dst == 15) { |
| 856 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
| 857 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 858 |
dc->delayed_branch = 1;
|
| 859 |
return insn_len;
|
| 860 |
} |
| 861 |
|
| 862 |
cris_alu_m_free_temps(t); |
| 863 |
|
| 864 |
return insn_len;
|
| 865 |
} |
| 866 |
|
| 867 |
static int dec10_ind_bound(DisasContext *dc, unsigned int size) |
| 868 |
{
|
| 869 |
int insn_len = 0; |
| 870 |
int rd = dc->dst;
|
| 871 |
TCGv t; |
| 872 |
|
| 873 |
t = tcg_temp_local_new(); |
| 874 |
insn_len += dec10_prep_move_m(dc, 0, size, t);
|
| 875 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
|
| 876 |
if (dc->dst == 15) { |
| 877 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
| 878 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 879 |
dc->delayed_branch = 1;
|
| 880 |
return insn_len;
|
| 881 |
} |
| 882 |
|
| 883 |
tcg_temp_free(t); |
| 884 |
return insn_len;
|
| 885 |
} |
| 886 |
|
| 887 |
static int dec10_alux_m(DisasContext *dc, int op) |
| 888 |
{
|
| 889 |
unsigned int size = (dc->size & 1) ? 2 : 1; |
| 890 |
unsigned int sx = !!(dc->size & 2); |
| 891 |
int insn_len = 2; |
| 892 |
int rd = dc->dst;
|
| 893 |
TCGv t; |
| 894 |
|
| 895 |
LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
|
| 896 |
|
| 897 |
t = tcg_temp_new(); |
| 898 |
|
| 899 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 900 |
insn_len += dec10_prep_move_m(dc, sx, size, t); |
| 901 |
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
|
| 902 |
if (dc->dst == 15) { |
| 903 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
| 904 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 905 |
dc->delayed_branch = 1;
|
| 906 |
return insn_len;
|
| 907 |
} |
| 908 |
|
| 909 |
tcg_temp_free(t); |
| 910 |
return insn_len;
|
| 911 |
} |
| 912 |
|
| 913 |
static int dec10_dip(DisasContext *dc) |
| 914 |
{
|
| 915 |
int insn_len = 2; |
| 916 |
uint32_t imm; |
| 917 |
|
| 918 |
LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
|
| 919 |
dc->pc, dc->opcode, dc->src, dc->dst); |
| 920 |
if (dc->src == 15) { |
| 921 |
imm = ldl_code(dc->pc + 2);
|
| 922 |
tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm); |
| 923 |
if (dc->postinc)
|
| 924 |
insn_len += 4;
|
| 925 |
tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2); |
| 926 |
} else {
|
| 927 |
gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0); |
| 928 |
if (dc->postinc)
|
| 929 |
tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
|
| 930 |
} |
| 931 |
|
| 932 |
cris_set_prefix(dc); |
| 933 |
return insn_len;
|
| 934 |
} |
| 935 |
|
| 936 |
static int dec10_bdap_m(DisasContext *dc, int size) |
| 937 |
{
|
| 938 |
int insn_len = 2; |
| 939 |
int rd = dc->dst;
|
| 940 |
|
| 941 |
LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
|
| 942 |
dc->pc, dc->opcode, dc->src, dc->dst, size); |
| 943 |
|
| 944 |
assert(dc->dst != 15);
|
| 945 |
#if 0
|
| 946 |
/* 8bit embedded offset? */
|
| 947 |
if (!dc->postinc && (dc->ir & (1 << 11))) {
|
| 948 |
int simm = dc->ir & 0xff;
|
| 949 |
|
| 950 |
/* cpu_abort(dc->env, "Unhandled opcode"); */
|
| 951 |
/* sign extended. */
|
| 952 |
simm = (int8_t)simm;
|
| 953 |
|
| 954 |
tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
|
| 955 |
|
| 956 |
cris_set_prefix(dc);
|
| 957 |
return insn_len;
|
| 958 |
}
|
| 959 |
#endif
|
| 960 |
/* Now the rest of the modes are truely indirect. */
|
| 961 |
insn_len += dec10_prep_move_m(dc, 1, size, cpu_PR[PR_PREFIX]);
|
| 962 |
tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]); |
| 963 |
cris_set_prefix(dc); |
| 964 |
return insn_len;
|
| 965 |
} |
| 966 |
|
| 967 |
static unsigned int dec10_ind(DisasContext *dc) |
| 968 |
{
|
| 969 |
unsigned int insn_len = 2; |
| 970 |
unsigned int size = dec10_size(dc->size); |
| 971 |
uint32_t imm; |
| 972 |
int32_t simm; |
| 973 |
TCGv t[2];
|
| 974 |
|
| 975 |
if (dc->size != 3) { |
| 976 |
switch (dc->opcode) {
|
| 977 |
case CRISV10_IND_MOVE_M_R:
|
| 978 |
return dec10_ind_move_m_r(dc, size);
|
| 979 |
break;
|
| 980 |
case CRISV10_IND_MOVE_R_M:
|
| 981 |
return dec10_ind_move_r_m(dc, size);
|
| 982 |
break;
|
| 983 |
case CRISV10_IND_CMP:
|
| 984 |
LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
|
| 985 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 986 |
insn_len += dec10_ind_alu(dc, CC_OP_CMP, size); |
| 987 |
break;
|
| 988 |
case CRISV10_IND_TEST:
|
| 989 |
LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
|
| 990 |
|
| 991 |
cris_evaluate_flags(dc); |
| 992 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 993 |
cris_alu_m_alloc_temps(t); |
| 994 |
insn_len += dec10_prep_move_m(dc, 0, size, t[0]); |
| 995 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
|
| 996 |
cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst], |
| 997 |
t[0], tcg_const_tl(0), size); |
| 998 |
cris_alu_m_free_temps(t); |
| 999 |
break;
|
| 1000 |
case CRISV10_IND_ADD:
|
| 1001 |
LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
|
| 1002 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1003 |
insn_len += dec10_ind_alu(dc, CC_OP_ADD, size); |
| 1004 |
break;
|
| 1005 |
case CRISV10_IND_SUB:
|
| 1006 |
LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
|
| 1007 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1008 |
insn_len += dec10_ind_alu(dc, CC_OP_SUB, size); |
| 1009 |
break;
|
| 1010 |
case CRISV10_IND_BOUND:
|
| 1011 |
LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
|
| 1012 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1013 |
insn_len += dec10_ind_bound(dc, size); |
| 1014 |
break;
|
| 1015 |
case CRISV10_IND_AND:
|
| 1016 |
LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
|
| 1017 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1018 |
insn_len += dec10_ind_alu(dc, CC_OP_AND, size); |
| 1019 |
break;
|
| 1020 |
case CRISV10_IND_OR:
|
| 1021 |
LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
|
| 1022 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1023 |
insn_len += dec10_ind_alu(dc, CC_OP_OR, size); |
| 1024 |
break;
|
| 1025 |
case CRISV10_IND_MOVX:
|
| 1026 |
insn_len = dec10_alux_m(dc, CC_OP_MOVE); |
| 1027 |
break;
|
| 1028 |
case CRISV10_IND_ADDX:
|
| 1029 |
insn_len = dec10_alux_m(dc, CC_OP_ADD); |
| 1030 |
break;
|
| 1031 |
case CRISV10_IND_SUBX:
|
| 1032 |
insn_len = dec10_alux_m(dc, CC_OP_SUB); |
| 1033 |
break;
|
| 1034 |
case CRISV10_IND_CMPX:
|
| 1035 |
insn_len = dec10_alux_m(dc, CC_OP_CMP); |
| 1036 |
break;
|
| 1037 |
case CRISV10_IND_MUL:
|
| 1038 |
/* This is a reg insn coded in the mem indir space. */
|
| 1039 |
LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
|
| 1040 |
cris_cc_mask(dc, CC_MASK_NZVC); |
| 1041 |
dec10_reg_mul(dc, size, dc->ir & (1 << 10)); |
| 1042 |
break;
|
| 1043 |
case CRISV10_IND_BDAP_M:
|
| 1044 |
insn_len = dec10_bdap_m(dc, size); |
| 1045 |
break;
|
| 1046 |
default:
|
| 1047 |
LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
|
| 1048 |
dc->pc, size, dc->opcode, dc->src, dc->dst); |
| 1049 |
cpu_abort(dc->env, "Unhandled opcode");
|
| 1050 |
break;
|
| 1051 |
} |
| 1052 |
return insn_len;
|
| 1053 |
} |
| 1054 |
|
| 1055 |
switch (dc->opcode) {
|
| 1056 |
case CRISV10_IND_MOVE_M_SPR:
|
| 1057 |
insn_len = dec10_ind_move_m_pr(dc); |
| 1058 |
break;
|
| 1059 |
case CRISV10_IND_MOVE_SPR_M:
|
| 1060 |
insn_len = dec10_ind_move_pr_m(dc); |
| 1061 |
break;
|
| 1062 |
case CRISV10_IND_JUMP_M:
|
| 1063 |
if (dc->src == 15) { |
| 1064 |
LOG_DIS("jump.%d %d r%d r%d\n", size,
|
| 1065 |
dc->opcode, dc->src, dc->dst); |
| 1066 |
imm = ldl_code(dc->pc + 2);
|
| 1067 |
if (dc->mode == CRISV10_MODE_AUTOINC)
|
| 1068 |
insn_len += size; |
| 1069 |
|
| 1070 |
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); |
| 1071 |
tcg_gen_movi_tl(env_btarget, imm); |
| 1072 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 1073 |
dc->delayed_branch--; /* v10 has no dslot here. */
|
| 1074 |
} else {
|
| 1075 |
if (dc->dst == 14) { |
| 1076 |
LOG_DIS("break %d\n", dc->src);
|
| 1077 |
cris_evaluate_flags(dc); |
| 1078 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
| 1079 |
t_gen_raise_exception(EXCP_BREAK); |
| 1080 |
dc->is_jmp = DISAS_UPDATE; |
| 1081 |
return insn_len;
|
| 1082 |
} |
| 1083 |
LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
|
| 1084 |
dc->opcode, dc->src, dc->dst); |
| 1085 |
t[0] = tcg_temp_new();
|
| 1086 |
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); |
| 1087 |
crisv10_prepare_memaddr(dc, t[0], size);
|
| 1088 |
gen_load(dc, env_btarget, t[0], 4, 0); |
| 1089 |
insn_len += crisv10_post_memaddr(dc, size); |
| 1090 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 1091 |
dc->delayed_branch--; /* v10 has no dslot here. */
|
| 1092 |
tcg_temp_free(t[0]);
|
| 1093 |
} |
| 1094 |
break;
|
| 1095 |
|
| 1096 |
case CRISV10_IND_MOVEM_R_M:
|
| 1097 |
LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
|
| 1098 |
dc->pc, dc->opcode, dc->dst, dc->src); |
| 1099 |
dec10_movem_r_m(dc); |
| 1100 |
break;
|
| 1101 |
case CRISV10_IND_MOVEM_M_R:
|
| 1102 |
LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
|
| 1103 |
dec10_movem_m_r(dc); |
| 1104 |
break;
|
| 1105 |
case CRISV10_IND_JUMP_R:
|
| 1106 |
LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
|
| 1107 |
dc->pc, dc->opcode, dc->dst, dc->src); |
| 1108 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]); |
| 1109 |
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); |
| 1110 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
| 1111 |
dc->delayed_branch--; /* v10 has no dslot here. */
|
| 1112 |
break;
|
| 1113 |
case CRISV10_IND_MOVX:
|
| 1114 |
insn_len = dec10_alux_m(dc, CC_OP_MOVE); |
| 1115 |
break;
|
| 1116 |
case CRISV10_IND_ADDX:
|
| 1117 |
insn_len = dec10_alux_m(dc, CC_OP_ADD); |
| 1118 |
break;
|
| 1119 |
case CRISV10_IND_SUBX:
|
| 1120 |
insn_len = dec10_alux_m(dc, CC_OP_SUB); |
| 1121 |
break;
|
| 1122 |
case CRISV10_IND_CMPX:
|
| 1123 |
insn_len = dec10_alux_m(dc, CC_OP_CMP); |
| 1124 |
break;
|
| 1125 |
case CRISV10_IND_DIP:
|
| 1126 |
insn_len = dec10_dip(dc); |
| 1127 |
break;
|
| 1128 |
case CRISV10_IND_BCC_M:
|
| 1129 |
|
| 1130 |
cris_cc_mask(dc, 0);
|
| 1131 |
imm = ldsw_code(dc->pc + 2);
|
| 1132 |
simm = (int16_t)imm; |
| 1133 |
simm += 4;
|
| 1134 |
|
| 1135 |
LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
|
| 1136 |
cris_prepare_cc_branch(dc, simm, dc->cond); |
| 1137 |
insn_len = 4;
|
| 1138 |
break;
|
| 1139 |
default:
|
| 1140 |
LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
|
| 1141 |
cpu_abort(dc->env, "Unhandled opcode");
|
| 1142 |
break;
|
| 1143 |
} |
| 1144 |
|
| 1145 |
return insn_len;
|
| 1146 |
} |
| 1147 |
|
| 1148 |
static unsigned int crisv10_decoder(DisasContext *dc) |
| 1149 |
{
|
| 1150 |
unsigned int insn_len = 2; |
| 1151 |
|
| 1152 |
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
|
| 1153 |
tcg_gen_debug_insn_start(dc->pc); |
| 1154 |
|
| 1155 |
/* Load a halfword onto the instruction register. */
|
| 1156 |
dc->ir = lduw_code(dc->pc); |
| 1157 |
|
| 1158 |
/* Now decode it. */
|
| 1159 |
dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9); |
| 1160 |
dc->mode = EXTRACT_FIELD(dc->ir, 10, 11); |
| 1161 |
dc->src = EXTRACT_FIELD(dc->ir, 0, 3); |
| 1162 |
dc->size = EXTRACT_FIELD(dc->ir, 4, 5); |
| 1163 |
dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15); |
| 1164 |
dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); |
| 1165 |
|
| 1166 |
dc->clear_prefix = 1;
|
| 1167 |
|
| 1168 |
/* FIXME: What if this insn insn't 2 in length?? */
|
| 1169 |
if (dc->src == 15 || dc->dst == 15) |
| 1170 |
tcg_gen_movi_tl(cpu_R[15], dc->pc + 2); |
| 1171 |
|
| 1172 |
switch (dc->mode) {
|
| 1173 |
case CRISV10_MODE_QIMMEDIATE:
|
| 1174 |
insn_len = dec10_quick_imm(dc); |
| 1175 |
break;
|
| 1176 |
case CRISV10_MODE_REG:
|
| 1177 |
insn_len = dec10_reg(dc); |
| 1178 |
break;
|
| 1179 |
case CRISV10_MODE_AUTOINC:
|
| 1180 |
case CRISV10_MODE_INDIRECT:
|
| 1181 |
insn_len = dec10_ind(dc); |
| 1182 |
break;
|
| 1183 |
} |
| 1184 |
|
| 1185 |
if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
|
| 1186 |
dc->tb_flags &= ~PFIX_FLAG; |
| 1187 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG); |
| 1188 |
dc->cpustate_changed = 1;
|
| 1189 |
} |
| 1190 |
|
| 1191 |
/* CRISv10 locks out interrupts on dslots. */
|
| 1192 |
if (dc->delayed_branch == 2) { |
| 1193 |
cris_lock_irq(dc); |
| 1194 |
} |
| 1195 |
return insn_len;
|
| 1196 |
} |
| 1197 |
|
| 1198 |
static CPUCRISState *cpu_crisv10_init (CPUState *env)
|
| 1199 |
{
|
| 1200 |
int i;
|
| 1201 |
|
| 1202 |
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
|
| 1203 |
cc_x = tcg_global_mem_new(TCG_AREG0, |
| 1204 |
offsetof(CPUState, cc_x), "cc_x");
|
| 1205 |
cc_src = tcg_global_mem_new(TCG_AREG0, |
| 1206 |
offsetof(CPUState, cc_src), "cc_src");
|
| 1207 |
cc_dest = tcg_global_mem_new(TCG_AREG0, |
| 1208 |
offsetof(CPUState, cc_dest), |
| 1209 |
"cc_dest");
|
| 1210 |
cc_result = tcg_global_mem_new(TCG_AREG0, |
| 1211 |
offsetof(CPUState, cc_result), |
| 1212 |
"cc_result");
|
| 1213 |
cc_op = tcg_global_mem_new(TCG_AREG0, |
| 1214 |
offsetof(CPUState, cc_op), "cc_op");
|
| 1215 |
cc_size = tcg_global_mem_new(TCG_AREG0, |
| 1216 |
offsetof(CPUState, cc_size), |
| 1217 |
"cc_size");
|
| 1218 |
cc_mask = tcg_global_mem_new(TCG_AREG0, |
| 1219 |
offsetof(CPUState, cc_mask), |
| 1220 |
"cc_mask");
|
| 1221 |
|
| 1222 |
env_pc = tcg_global_mem_new(TCG_AREG0, |
| 1223 |
offsetof(CPUState, pc), |
| 1224 |
"pc");
|
| 1225 |
env_btarget = tcg_global_mem_new(TCG_AREG0, |
| 1226 |
offsetof(CPUState, btarget), |
| 1227 |
"btarget");
|
| 1228 |
env_btaken = tcg_global_mem_new(TCG_AREG0, |
| 1229 |
offsetof(CPUState, btaken), |
| 1230 |
"btaken");
|
| 1231 |
for (i = 0; i < 16; i++) { |
| 1232 |
cpu_R[i] = tcg_global_mem_new(TCG_AREG0, |
| 1233 |
offsetof(CPUState, regs[i]), |
| 1234 |
regnames_v10[i]); |
| 1235 |
} |
| 1236 |
for (i = 0; i < 16; i++) { |
| 1237 |
cpu_PR[i] = tcg_global_mem_new(TCG_AREG0, |
| 1238 |
offsetof(CPUState, pregs[i]), |
| 1239 |
pregnames_v10[i]); |
| 1240 |
} |
| 1241 |
|
| 1242 |
return env;
|
| 1243 |
} |
| 1244 |
|