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/*
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* m68k translation
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*
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* Copyright (c) 2005-2007 CodeSourcery
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* Written by Paul Brook
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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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* 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 <stdarg.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include "config.h" |
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#include "cpu.h" |
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#include "exec-all.h" |
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#include "disas.h" |
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#include "tcg-op.h" |
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#include "qemu-log.h" |
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#include "helpers.h" |
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#define GEN_HELPER 1 |
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#include "helpers.h" |
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//#define DEBUG_DISPATCH 1
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/* Fake floating point. */
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#define tcg_gen_mov_f64 tcg_gen_mov_i64
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#define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
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#define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
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#define DEFO32(name, offset) static TCGv QREG_##name; |
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#define DEFO64(name, offset) static TCGv_i64 QREG_##name; |
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#define DEFF64(name, offset) static TCGv_i64 QREG_##name; |
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#include "qregs.def" |
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#undef DEFO32
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#undef DEFO64
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#undef DEFF64
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static TCGv_ptr cpu_env;
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static char cpu_reg_names[3*8*3 + 5*4]; |
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static TCGv cpu_dregs[8]; |
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static TCGv cpu_aregs[8]; |
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static TCGv_i64 cpu_fregs[8]; |
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static TCGv_i64 cpu_macc[4]; |
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#define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7] |
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#define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7] |
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#define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7] |
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#define MACREG(acc) cpu_macc[acc]
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#define QREG_SP cpu_aregs[7] |
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static TCGv NULL_QREG;
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#define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
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/* Used to distinguish stores from bad addressing modes. */
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static TCGv store_dummy;
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#include "gen-icount.h" |
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void m68k_tcg_init(void) |
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{ |
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char *p;
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int i;
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#define DEFO32(name, offset) QREG_##name = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUState, offset), #name); |
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#define DEFO64(name, offset) QREG_##name = tcg_global_mem_new_i64(TCG_AREG0, offsetof(CPUState, offset), #name); |
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#define DEFF64(name, offset) DEFO64(name, offset)
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#include "qregs.def" |
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#undef DEFO32
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#undef DEFO64
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#undef DEFF64
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cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
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p = cpu_reg_names; |
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for (i = 0; i < 8; i++) { |
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sprintf(p, "D%d", i);
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cpu_dregs[i] = tcg_global_mem_new(TCG_AREG0, |
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offsetof(CPUM68KState, dregs[i]), p); |
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p += 3;
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sprintf(p, "A%d", i);
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cpu_aregs[i] = tcg_global_mem_new(TCG_AREG0, |
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offsetof(CPUM68KState, aregs[i]), p); |
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p += 3;
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sprintf(p, "F%d", i);
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cpu_fregs[i] = tcg_global_mem_new_i64(TCG_AREG0, |
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offsetof(CPUM68KState, fregs[i]), p); |
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p += 3;
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} |
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for (i = 0; i < 4; i++) { |
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sprintf(p, "ACC%d", i);
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cpu_macc[i] = tcg_global_mem_new_i64(TCG_AREG0, |
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offsetof(CPUM68KState, macc[i]), p); |
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p += 5;
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} |
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NULL_QREG = tcg_global_mem_new(TCG_AREG0, -4, "NULL"); |
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store_dummy = tcg_global_mem_new(TCG_AREG0, -8, "NULL"); |
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#define GEN_HELPER 2 |
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#include "helpers.h" |
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} |
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static inline void qemu_assert(int cond, const char *msg) |
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{ |
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if (!cond) {
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fprintf (stderr, "badness: %s\n", msg);
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abort(); |
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} |
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} |
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/* internal defines */
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typedef struct DisasContext { |
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CPUM68KState *env; |
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target_ulong insn_pc; /* Start of the current instruction. */
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target_ulong pc; |
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int is_jmp;
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int cc_op;
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int user;
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uint32_t fpcr; |
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struct TranslationBlock *tb;
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int singlestep_enabled;
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int is_mem;
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TCGv_i64 mactmp; |
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int done_mac;
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} DisasContext; |
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#define DISAS_JUMP_NEXT 4 |
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#if defined(CONFIG_USER_ONLY)
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#define IS_USER(s) 1 |
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#else
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#define IS_USER(s) s->user
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#endif
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/* XXX: move that elsewhere */
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/* ??? Fix exceptions. */
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static void *gen_throws_exception; |
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#define gen_last_qop NULL |
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#define OS_BYTE 0 |
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#define OS_WORD 1 |
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#define OS_LONG 2 |
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#define OS_SINGLE 4 |
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#define OS_DOUBLE 5 |
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typedef void (*disas_proc)(DisasContext *, uint16_t); |
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#ifdef DEBUG_DISPATCH
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#define DISAS_INSN(name) \
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static void real_disas_##name (DisasContext *s, uint16_t insn); \ |
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static void disas_##name (DisasContext *s, uint16_t insn) { \ |
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qemu_log("Dispatch " #name "\n"); \ |
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real_disas_##name(s, insn); } \ |
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static void real_disas_##name (DisasContext *s, uint16_t insn) |
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#else
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#define DISAS_INSN(name) \
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static void disas_##name (DisasContext *s, uint16_t insn) |
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#endif
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/* FIXME: Remove this. */
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#define gen_im32(val) tcg_const_i32(val)
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/* Generate a load from the specified address. Narrow values are
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sign extended to full register width. */
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static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign) |
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{ |
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TCGv tmp; |
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int index = IS_USER(s);
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s->is_mem = 1;
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tmp = tcg_temp_new_i32(); |
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switch(opsize) {
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case OS_BYTE:
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if (sign)
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tcg_gen_qemu_ld8s(tmp, addr, index); |
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else
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tcg_gen_qemu_ld8u(tmp, addr, index); |
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break;
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case OS_WORD:
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if (sign)
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tcg_gen_qemu_ld16s(tmp, addr, index); |
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else
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tcg_gen_qemu_ld16u(tmp, addr, index); |
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break;
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case OS_LONG:
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case OS_SINGLE:
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tcg_gen_qemu_ld32u(tmp, addr, index); |
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break;
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default:
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qemu_assert(0, "bad load size"); |
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} |
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gen_throws_exception = gen_last_qop; |
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return tmp;
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} |
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static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr) |
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{ |
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TCGv_i64 tmp; |
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int index = IS_USER(s);
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s->is_mem = 1;
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tmp = tcg_temp_new_i64(); |
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tcg_gen_qemu_ldf64(tmp, addr, index); |
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gen_throws_exception = gen_last_qop; |
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return tmp;
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} |
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/* Generate a store. */
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static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val) |
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{ |
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int index = IS_USER(s);
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s->is_mem = 1;
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switch(opsize) {
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case OS_BYTE:
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tcg_gen_qemu_st8(val, addr, index); |
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break;
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case OS_WORD:
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tcg_gen_qemu_st16(val, addr, index); |
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break;
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case OS_LONG:
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case OS_SINGLE:
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tcg_gen_qemu_st32(val, addr, index); |
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break;
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default:
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qemu_assert(0, "bad store size"); |
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} |
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gen_throws_exception = gen_last_qop; |
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} |
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static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val) |
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{ |
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int index = IS_USER(s);
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s->is_mem = 1;
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tcg_gen_qemu_stf64(val, addr, index); |
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gen_throws_exception = gen_last_qop; |
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} |
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typedef enum { |
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EA_STORE, |
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EA_LOADU, |
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EA_LOADS |
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} ea_what; |
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/* Generate an unsigned load if VAL is 0 a signed load if val is -1,
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otherwise generate a store. */
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static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val, |
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ea_what what) |
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{ |
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if (what == EA_STORE) {
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gen_store(s, opsize, addr, val); |
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return store_dummy;
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} else {
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return gen_load(s, opsize, addr, what == EA_LOADS);
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} |
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} |
268 |
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/* Read a 32-bit immediate constant. */
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static inline uint32_t read_im32(DisasContext *s) |
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{ |
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uint32_t im; |
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im = ((uint32_t)lduw_code(s->pc)) << 16;
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s->pc += 2;
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im |= lduw_code(s->pc); |
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s->pc += 2;
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return im;
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} |
279 |
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/* Calculate and address index. */
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static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
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{ |
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TCGv add; |
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int scale;
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add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12); |
287 |
if ((ext & 0x800) == 0) { |
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tcg_gen_ext16s_i32(tmp, add); |
289 |
add = tmp; |
290 |
} |
291 |
scale = (ext >> 9) & 3; |
292 |
if (scale != 0) { |
293 |
tcg_gen_shli_i32(tmp, add, scale); |
294 |
add = tmp; |
295 |
} |
296 |
return add;
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} |
298 |
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/* Handle a base + index + displacement effective addresss.
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A NULL_QREG base means pc-relative. */
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static TCGv gen_lea_indexed(DisasContext *s, int opsize, TCGv base) |
302 |
{ |
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uint32_t offset; |
304 |
uint16_t ext; |
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TCGv add; |
306 |
TCGv tmp; |
307 |
uint32_t bd, od; |
308 |
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offset = s->pc; |
310 |
ext = lduw_code(s->pc); |
311 |
s->pc += 2;
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312 |
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313 |
if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX)) |
314 |
return NULL_QREG;
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316 |
if (ext & 0x100) { |
317 |
/* full extension word format */
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318 |
if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
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return NULL_QREG;
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320 |
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321 |
if ((ext & 0x30) > 0x10) { |
322 |
/* base displacement */
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323 |
if ((ext & 0x30) == 0x20) { |
324 |
bd = (int16_t)lduw_code(s->pc); |
325 |
s->pc += 2;
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326 |
} else {
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327 |
bd = read_im32(s); |
328 |
} |
329 |
} else {
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330 |
bd = 0;
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331 |
} |
332 |
tmp = tcg_temp_new(); |
333 |
if ((ext & 0x44) == 0) { |
334 |
/* pre-index */
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335 |
add = gen_addr_index(ext, tmp); |
336 |
} else {
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337 |
add = NULL_QREG; |
338 |
} |
339 |
if ((ext & 0x80) == 0) { |
340 |
/* base not suppressed */
|
341 |
if (IS_NULL_QREG(base)) {
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342 |
base = gen_im32(offset + bd); |
343 |
bd = 0;
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344 |
} |
345 |
if (!IS_NULL_QREG(add)) {
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346 |
tcg_gen_add_i32(tmp, add, base); |
347 |
add = tmp; |
348 |
} else {
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349 |
add = base; |
350 |
} |
351 |
} |
352 |
if (!IS_NULL_QREG(add)) {
|
353 |
if (bd != 0) { |
354 |
tcg_gen_addi_i32(tmp, add, bd); |
355 |
add = tmp; |
356 |
} |
357 |
} else {
|
358 |
add = gen_im32(bd); |
359 |
} |
360 |
if ((ext & 3) != 0) { |
361 |
/* memory indirect */
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362 |
base = gen_load(s, OS_LONG, add, 0);
|
363 |
if ((ext & 0x44) == 4) { |
364 |
add = gen_addr_index(ext, tmp); |
365 |
tcg_gen_add_i32(tmp, add, base); |
366 |
add = tmp; |
367 |
} else {
|
368 |
add = base; |
369 |
} |
370 |
if ((ext & 3) > 1) { |
371 |
/* outer displacement */
|
372 |
if ((ext & 3) == 2) { |
373 |
od = (int16_t)lduw_code(s->pc); |
374 |
s->pc += 2;
|
375 |
} else {
|
376 |
od = read_im32(s); |
377 |
} |
378 |
} else {
|
379 |
od = 0;
|
380 |
} |
381 |
if (od != 0) { |
382 |
tcg_gen_addi_i32(tmp, add, od); |
383 |
add = tmp; |
384 |
} |
385 |
} |
386 |
} else {
|
387 |
/* brief extension word format */
|
388 |
tmp = tcg_temp_new(); |
389 |
add = gen_addr_index(ext, tmp); |
390 |
if (!IS_NULL_QREG(base)) {
|
391 |
tcg_gen_add_i32(tmp, add, base); |
392 |
if ((int8_t)ext)
|
393 |
tcg_gen_addi_i32(tmp, tmp, (int8_t)ext); |
394 |
} else {
|
395 |
tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext); |
396 |
} |
397 |
add = tmp; |
398 |
} |
399 |
return add;
|
400 |
} |
401 |
|
402 |
/* Update the CPU env CC_OP state. */
|
403 |
static inline void gen_flush_cc_op(DisasContext *s) |
404 |
{ |
405 |
if (s->cc_op != CC_OP_DYNAMIC)
|
406 |
tcg_gen_movi_i32(QREG_CC_OP, s->cc_op); |
407 |
} |
408 |
|
409 |
/* Evaluate all the CC flags. */
|
410 |
static inline void gen_flush_flags(DisasContext *s) |
411 |
{ |
412 |
if (s->cc_op == CC_OP_FLAGS)
|
413 |
return;
|
414 |
gen_flush_cc_op(s); |
415 |
gen_helper_flush_flags(cpu_env, QREG_CC_OP); |
416 |
s->cc_op = CC_OP_FLAGS; |
417 |
} |
418 |
|
419 |
static void gen_logic_cc(DisasContext *s, TCGv val) |
420 |
{ |
421 |
tcg_gen_mov_i32(QREG_CC_DEST, val); |
422 |
s->cc_op = CC_OP_LOGIC; |
423 |
} |
424 |
|
425 |
static void gen_update_cc_add(TCGv dest, TCGv src) |
426 |
{ |
427 |
tcg_gen_mov_i32(QREG_CC_DEST, dest); |
428 |
tcg_gen_mov_i32(QREG_CC_SRC, src); |
429 |
} |
430 |
|
431 |
static inline int opsize_bytes(int opsize) |
432 |
{ |
433 |
switch (opsize) {
|
434 |
case OS_BYTE: return 1; |
435 |
case OS_WORD: return 2; |
436 |
case OS_LONG: return 4; |
437 |
case OS_SINGLE: return 4; |
438 |
case OS_DOUBLE: return 8; |
439 |
default:
|
440 |
qemu_assert(0, "bad operand size"); |
441 |
return 0; |
442 |
} |
443 |
} |
444 |
|
445 |
/* Assign value to a register. If the width is less than the register width
|
446 |
only the low part of the register is set. */
|
447 |
static void gen_partset_reg(int opsize, TCGv reg, TCGv val) |
448 |
{ |
449 |
TCGv tmp; |
450 |
switch (opsize) {
|
451 |
case OS_BYTE:
|
452 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
453 |
tmp = tcg_temp_new(); |
454 |
tcg_gen_ext8u_i32(tmp, val); |
455 |
tcg_gen_or_i32(reg, reg, tmp); |
456 |
break;
|
457 |
case OS_WORD:
|
458 |
tcg_gen_andi_i32(reg, reg, 0xffff0000);
|
459 |
tmp = tcg_temp_new(); |
460 |
tcg_gen_ext16u_i32(tmp, val); |
461 |
tcg_gen_or_i32(reg, reg, tmp); |
462 |
break;
|
463 |
case OS_LONG:
|
464 |
case OS_SINGLE:
|
465 |
tcg_gen_mov_i32(reg, val); |
466 |
break;
|
467 |
default:
|
468 |
qemu_assert(0, "Bad operand size"); |
469 |
break;
|
470 |
} |
471 |
} |
472 |
|
473 |
/* Sign or zero extend a value. */
|
474 |
static inline TCGv gen_extend(TCGv val, int opsize, int sign) |
475 |
{ |
476 |
TCGv tmp; |
477 |
|
478 |
switch (opsize) {
|
479 |
case OS_BYTE:
|
480 |
tmp = tcg_temp_new(); |
481 |
if (sign)
|
482 |
tcg_gen_ext8s_i32(tmp, val); |
483 |
else
|
484 |
tcg_gen_ext8u_i32(tmp, val); |
485 |
break;
|
486 |
case OS_WORD:
|
487 |
tmp = tcg_temp_new(); |
488 |
if (sign)
|
489 |
tcg_gen_ext16s_i32(tmp, val); |
490 |
else
|
491 |
tcg_gen_ext16u_i32(tmp, val); |
492 |
break;
|
493 |
case OS_LONG:
|
494 |
case OS_SINGLE:
|
495 |
tmp = val; |
496 |
break;
|
497 |
default:
|
498 |
qemu_assert(0, "Bad operand size"); |
499 |
} |
500 |
return tmp;
|
501 |
} |
502 |
|
503 |
/* Generate code for an "effective address". Does not adjust the base
|
504 |
register for autoincrement addressing modes. */
|
505 |
static TCGv gen_lea(DisasContext *s, uint16_t insn, int opsize) |
506 |
{ |
507 |
TCGv reg; |
508 |
TCGv tmp; |
509 |
uint16_t ext; |
510 |
uint32_t offset; |
511 |
|
512 |
switch ((insn >> 3) & 7) { |
513 |
case 0: /* Data register direct. */ |
514 |
case 1: /* Address register direct. */ |
515 |
return NULL_QREG;
|
516 |
case 2: /* Indirect register */ |
517 |
case 3: /* Indirect postincrement. */ |
518 |
return AREG(insn, 0); |
519 |
case 4: /* Indirect predecrememnt. */ |
520 |
reg = AREG(insn, 0);
|
521 |
tmp = tcg_temp_new(); |
522 |
tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize)); |
523 |
return tmp;
|
524 |
case 5: /* Indirect displacement. */ |
525 |
reg = AREG(insn, 0);
|
526 |
tmp = tcg_temp_new(); |
527 |
ext = lduw_code(s->pc); |
528 |
s->pc += 2;
|
529 |
tcg_gen_addi_i32(tmp, reg, (int16_t)ext); |
530 |
return tmp;
|
531 |
case 6: /* Indirect index + displacement. */ |
532 |
reg = AREG(insn, 0);
|
533 |
return gen_lea_indexed(s, opsize, reg);
|
534 |
case 7: /* Other */ |
535 |
switch (insn & 7) { |
536 |
case 0: /* Absolute short. */ |
537 |
offset = ldsw_code(s->pc); |
538 |
s->pc += 2;
|
539 |
return gen_im32(offset);
|
540 |
case 1: /* Absolute long. */ |
541 |
offset = read_im32(s); |
542 |
return gen_im32(offset);
|
543 |
case 2: /* pc displacement */ |
544 |
tmp = tcg_temp_new(); |
545 |
offset = s->pc; |
546 |
offset += ldsw_code(s->pc); |
547 |
s->pc += 2;
|
548 |
return gen_im32(offset);
|
549 |
case 3: /* pc index+displacement. */ |
550 |
return gen_lea_indexed(s, opsize, NULL_QREG);
|
551 |
case 4: /* Immediate. */ |
552 |
default:
|
553 |
return NULL_QREG;
|
554 |
} |
555 |
} |
556 |
/* Should never happen. */
|
557 |
return NULL_QREG;
|
558 |
} |
559 |
|
560 |
/* Helper function for gen_ea. Reuse the computed address between the
|
561 |
for read/write operands. */
|
562 |
static inline TCGv gen_ea_once(DisasContext *s, uint16_t insn, int opsize, |
563 |
TCGv val, TCGv *addrp, ea_what what) |
564 |
{ |
565 |
TCGv tmp; |
566 |
|
567 |
if (addrp && what == EA_STORE) {
|
568 |
tmp = *addrp; |
569 |
} else {
|
570 |
tmp = gen_lea(s, insn, opsize); |
571 |
if (IS_NULL_QREG(tmp))
|
572 |
return tmp;
|
573 |
if (addrp)
|
574 |
*addrp = tmp; |
575 |
} |
576 |
return gen_ldst(s, opsize, tmp, val, what);
|
577 |
} |
578 |
|
579 |
/* Generate code to load/store a value ito/from an EA. If VAL > 0 this is
|
580 |
a write otherwise it is a read (0 == sign extend, -1 == zero extend).
|
581 |
ADDRP is non-null for readwrite operands. */
|
582 |
static TCGv gen_ea(DisasContext *s, uint16_t insn, int opsize, TCGv val, |
583 |
TCGv *addrp, ea_what what) |
584 |
{ |
585 |
TCGv reg; |
586 |
TCGv result; |
587 |
uint32_t offset; |
588 |
|
589 |
switch ((insn >> 3) & 7) { |
590 |
case 0: /* Data register direct. */ |
591 |
reg = DREG(insn, 0);
|
592 |
if (what == EA_STORE) {
|
593 |
gen_partset_reg(opsize, reg, val); |
594 |
return store_dummy;
|
595 |
} else {
|
596 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
597 |
} |
598 |
case 1: /* Address register direct. */ |
599 |
reg = AREG(insn, 0);
|
600 |
if (what == EA_STORE) {
|
601 |
tcg_gen_mov_i32(reg, val); |
602 |
return store_dummy;
|
603 |
} else {
|
604 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
605 |
} |
606 |
case 2: /* Indirect register */ |
607 |
reg = AREG(insn, 0);
|
608 |
return gen_ldst(s, opsize, reg, val, what);
|
609 |
case 3: /* Indirect postincrement. */ |
610 |
reg = AREG(insn, 0);
|
611 |
result = gen_ldst(s, opsize, reg, val, what); |
612 |
/* ??? This is not exception safe. The instruction may still
|
613 |
fault after this point. */
|
614 |
if (what == EA_STORE || !addrp)
|
615 |
tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize)); |
616 |
return result;
|
617 |
case 4: /* Indirect predecrememnt. */ |
618 |
{ |
619 |
TCGv tmp; |
620 |
if (addrp && what == EA_STORE) {
|
621 |
tmp = *addrp; |
622 |
} else {
|
623 |
tmp = gen_lea(s, insn, opsize); |
624 |
if (IS_NULL_QREG(tmp))
|
625 |
return tmp;
|
626 |
if (addrp)
|
627 |
*addrp = tmp; |
628 |
} |
629 |
result = gen_ldst(s, opsize, tmp, val, what); |
630 |
/* ??? This is not exception safe. The instruction may still
|
631 |
fault after this point. */
|
632 |
if (what == EA_STORE || !addrp) {
|
633 |
reg = AREG(insn, 0);
|
634 |
tcg_gen_mov_i32(reg, tmp); |
635 |
} |
636 |
} |
637 |
return result;
|
638 |
case 5: /* Indirect displacement. */ |
639 |
case 6: /* Indirect index + displacement. */ |
640 |
return gen_ea_once(s, insn, opsize, val, addrp, what);
|
641 |
case 7: /* Other */ |
642 |
switch (insn & 7) { |
643 |
case 0: /* Absolute short. */ |
644 |
case 1: /* Absolute long. */ |
645 |
case 2: /* pc displacement */ |
646 |
case 3: /* pc index+displacement. */ |
647 |
return gen_ea_once(s, insn, opsize, val, addrp, what);
|
648 |
case 4: /* Immediate. */ |
649 |
/* Sign extend values for consistency. */
|
650 |
switch (opsize) {
|
651 |
case OS_BYTE:
|
652 |
if (what == EA_LOADS)
|
653 |
offset = ldsb_code(s->pc + 1);
|
654 |
else
|
655 |
offset = ldub_code(s->pc + 1);
|
656 |
s->pc += 2;
|
657 |
break;
|
658 |
case OS_WORD:
|
659 |
if (what == EA_LOADS)
|
660 |
offset = ldsw_code(s->pc); |
661 |
else
|
662 |
offset = lduw_code(s->pc); |
663 |
s->pc += 2;
|
664 |
break;
|
665 |
case OS_LONG:
|
666 |
offset = read_im32(s); |
667 |
break;
|
668 |
default:
|
669 |
qemu_assert(0, "Bad immediate operand"); |
670 |
} |
671 |
return tcg_const_i32(offset);
|
672 |
default:
|
673 |
return NULL_QREG;
|
674 |
} |
675 |
} |
676 |
/* Should never happen. */
|
677 |
return NULL_QREG;
|
678 |
} |
679 |
|
680 |
/* This generates a conditional branch, clobbering all temporaries. */
|
681 |
static void gen_jmpcc(DisasContext *s, int cond, int l1) |
682 |
{ |
683 |
TCGv tmp; |
684 |
|
685 |
/* TODO: Optimize compare/branch pairs rather than always flushing
|
686 |
flag state to CC_OP_FLAGS. */
|
687 |
gen_flush_flags(s); |
688 |
switch (cond) {
|
689 |
case 0: /* T */ |
690 |
tcg_gen_br(l1); |
691 |
break;
|
692 |
case 1: /* F */ |
693 |
break;
|
694 |
case 2: /* HI (!C && !Z) */ |
695 |
tmp = tcg_temp_new(); |
696 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
697 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
698 |
break;
|
699 |
case 3: /* LS (C || Z) */ |
700 |
tmp = tcg_temp_new(); |
701 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
702 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
703 |
break;
|
704 |
case 4: /* CC (!C) */ |
705 |
tmp = tcg_temp_new(); |
706 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
707 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
708 |
break;
|
709 |
case 5: /* CS (C) */ |
710 |
tmp = tcg_temp_new(); |
711 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
712 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
713 |
break;
|
714 |
case 6: /* NE (!Z) */ |
715 |
tmp = tcg_temp_new(); |
716 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
717 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
718 |
break;
|
719 |
case 7: /* EQ (Z) */ |
720 |
tmp = tcg_temp_new(); |
721 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
722 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
723 |
break;
|
724 |
case 8: /* VC (!V) */ |
725 |
tmp = tcg_temp_new(); |
726 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
727 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
728 |
break;
|
729 |
case 9: /* VS (V) */ |
730 |
tmp = tcg_temp_new(); |
731 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
732 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
733 |
break;
|
734 |
case 10: /* PL (!N) */ |
735 |
tmp = tcg_temp_new(); |
736 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
737 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
738 |
break;
|
739 |
case 11: /* MI (N) */ |
740 |
tmp = tcg_temp_new(); |
741 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
742 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
743 |
break;
|
744 |
case 12: /* GE (!(N ^ V)) */ |
745 |
tmp = tcg_temp_new(); |
746 |
assert(CCF_V == (CCF_N >> 2));
|
747 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
748 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
749 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
750 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
751 |
break;
|
752 |
case 13: /* LT (N ^ V) */ |
753 |
tmp = tcg_temp_new(); |
754 |
assert(CCF_V == (CCF_N >> 2));
|
755 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
756 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
757 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
758 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
759 |
break;
|
760 |
case 14: /* GT (!(Z || (N ^ V))) */ |
761 |
tmp = tcg_temp_new(); |
762 |
assert(CCF_V == (CCF_N >> 2));
|
763 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
764 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
765 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
766 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
767 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
768 |
break;
|
769 |
case 15: /* LE (Z || (N ^ V)) */ |
770 |
tmp = tcg_temp_new(); |
771 |
assert(CCF_V == (CCF_N >> 2));
|
772 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
773 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
774 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
775 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
776 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
777 |
break;
|
778 |
default:
|
779 |
/* Should ever happen. */
|
780 |
abort(); |
781 |
} |
782 |
} |
783 |
|
784 |
DISAS_INSN(scc) |
785 |
{ |
786 |
int l1;
|
787 |
int cond;
|
788 |
TCGv reg; |
789 |
|
790 |
l1 = gen_new_label(); |
791 |
cond = (insn >> 8) & 0xf; |
792 |
reg = DREG(insn, 0);
|
793 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
794 |
/* This is safe because we modify the reg directly, with no other values
|
795 |
live. */
|
796 |
gen_jmpcc(s, cond ^ 1, l1);
|
797 |
tcg_gen_ori_i32(reg, reg, 0xff);
|
798 |
gen_set_label(l1); |
799 |
} |
800 |
|
801 |
/* Force a TB lookup after an instruction that changes the CPU state. */
|
802 |
static void gen_lookup_tb(DisasContext *s) |
803 |
{ |
804 |
gen_flush_cc_op(s); |
805 |
tcg_gen_movi_i32(QREG_PC, s->pc); |
806 |
s->is_jmp = DISAS_UPDATE; |
807 |
} |
808 |
|
809 |
/* Generate a jump to an immediate address. */
|
810 |
static void gen_jmp_im(DisasContext *s, uint32_t dest) |
811 |
{ |
812 |
gen_flush_cc_op(s); |
813 |
tcg_gen_movi_i32(QREG_PC, dest); |
814 |
s->is_jmp = DISAS_JUMP; |
815 |
} |
816 |
|
817 |
/* Generate a jump to the address in qreg DEST. */
|
818 |
static void gen_jmp(DisasContext *s, TCGv dest) |
819 |
{ |
820 |
gen_flush_cc_op(s); |
821 |
tcg_gen_mov_i32(QREG_PC, dest); |
822 |
s->is_jmp = DISAS_JUMP; |
823 |
} |
824 |
|
825 |
static void gen_exception(DisasContext *s, uint32_t where, int nr) |
826 |
{ |
827 |
gen_flush_cc_op(s); |
828 |
gen_jmp_im(s, where); |
829 |
gen_helper_raise_exception(tcg_const_i32(nr)); |
830 |
} |
831 |
|
832 |
static inline void gen_addr_fault(DisasContext *s) |
833 |
{ |
834 |
gen_exception(s, s->insn_pc, EXCP_ADDRESS); |
835 |
} |
836 |
|
837 |
#define SRC_EA(result, opsize, op_sign, addrp) do { \ |
838 |
result = gen_ea(s, insn, opsize, NULL_QREG, addrp, op_sign ? EA_LOADS : EA_LOADU); \ |
839 |
if (IS_NULL_QREG(result)) { \
|
840 |
gen_addr_fault(s); \ |
841 |
return; \
|
842 |
} \ |
843 |
} while (0) |
844 |
|
845 |
#define DEST_EA(insn, opsize, val, addrp) do { \ |
846 |
TCGv ea_result = gen_ea(s, insn, opsize, val, addrp, EA_STORE); \ |
847 |
if (IS_NULL_QREG(ea_result)) { \
|
848 |
gen_addr_fault(s); \ |
849 |
return; \
|
850 |
} \ |
851 |
} while (0) |
852 |
|
853 |
/* Generate a jump to an immediate address. */
|
854 |
static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest) |
855 |
{ |
856 |
TranslationBlock *tb; |
857 |
|
858 |
tb = s->tb; |
859 |
if (unlikely(s->singlestep_enabled)) {
|
860 |
gen_exception(s, dest, EXCP_DEBUG); |
861 |
} else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || |
862 |
(s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { |
863 |
tcg_gen_goto_tb(n); |
864 |
tcg_gen_movi_i32(QREG_PC, dest); |
865 |
tcg_gen_exit_tb((long)tb + n);
|
866 |
} else {
|
867 |
gen_jmp_im(s, dest); |
868 |
tcg_gen_exit_tb(0);
|
869 |
} |
870 |
s->is_jmp = DISAS_TB_JUMP; |
871 |
} |
872 |
|
873 |
DISAS_INSN(undef_mac) |
874 |
{ |
875 |
gen_exception(s, s->pc - 2, EXCP_LINEA);
|
876 |
} |
877 |
|
878 |
DISAS_INSN(undef_fpu) |
879 |
{ |
880 |
gen_exception(s, s->pc - 2, EXCP_LINEF);
|
881 |
} |
882 |
|
883 |
DISAS_INSN(undef) |
884 |
{ |
885 |
gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
|
886 |
cpu_abort(cpu_single_env, "Illegal instruction: %04x @ %08x",
|
887 |
insn, s->pc - 2);
|
888 |
} |
889 |
|
890 |
DISAS_INSN(mulw) |
891 |
{ |
892 |
TCGv reg; |
893 |
TCGv tmp; |
894 |
TCGv src; |
895 |
int sign;
|
896 |
|
897 |
sign = (insn & 0x100) != 0; |
898 |
reg = DREG(insn, 9);
|
899 |
tmp = tcg_temp_new(); |
900 |
if (sign)
|
901 |
tcg_gen_ext16s_i32(tmp, reg); |
902 |
else
|
903 |
tcg_gen_ext16u_i32(tmp, reg); |
904 |
SRC_EA(src, OS_WORD, sign, NULL);
|
905 |
tcg_gen_mul_i32(tmp, tmp, src); |
906 |
tcg_gen_mov_i32(reg, tmp); |
907 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
908 |
gen_logic_cc(s, tmp); |
909 |
} |
910 |
|
911 |
DISAS_INSN(divw) |
912 |
{ |
913 |
TCGv reg; |
914 |
TCGv tmp; |
915 |
TCGv src; |
916 |
int sign;
|
917 |
|
918 |
sign = (insn & 0x100) != 0; |
919 |
reg = DREG(insn, 9);
|
920 |
if (sign) {
|
921 |
tcg_gen_ext16s_i32(QREG_DIV1, reg); |
922 |
} else {
|
923 |
tcg_gen_ext16u_i32(QREG_DIV1, reg); |
924 |
} |
925 |
SRC_EA(src, OS_WORD, sign, NULL);
|
926 |
tcg_gen_mov_i32(QREG_DIV2, src); |
927 |
if (sign) {
|
928 |
gen_helper_divs(cpu_env, tcg_const_i32(1));
|
929 |
} else {
|
930 |
gen_helper_divu(cpu_env, tcg_const_i32(1));
|
931 |
} |
932 |
|
933 |
tmp = tcg_temp_new(); |
934 |
src = tcg_temp_new(); |
935 |
tcg_gen_ext16u_i32(tmp, QREG_DIV1); |
936 |
tcg_gen_shli_i32(src, QREG_DIV2, 16);
|
937 |
tcg_gen_or_i32(reg, tmp, src); |
938 |
s->cc_op = CC_OP_FLAGS; |
939 |
} |
940 |
|
941 |
DISAS_INSN(divl) |
942 |
{ |
943 |
TCGv num; |
944 |
TCGv den; |
945 |
TCGv reg; |
946 |
uint16_t ext; |
947 |
|
948 |
ext = lduw_code(s->pc); |
949 |
s->pc += 2;
|
950 |
if (ext & 0x87f8) { |
951 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
952 |
return;
|
953 |
} |
954 |
num = DREG(ext, 12);
|
955 |
reg = DREG(ext, 0);
|
956 |
tcg_gen_mov_i32(QREG_DIV1, num); |
957 |
SRC_EA(den, OS_LONG, 0, NULL); |
958 |
tcg_gen_mov_i32(QREG_DIV2, den); |
959 |
if (ext & 0x0800) { |
960 |
gen_helper_divs(cpu_env, tcg_const_i32(0));
|
961 |
} else {
|
962 |
gen_helper_divu(cpu_env, tcg_const_i32(0));
|
963 |
} |
964 |
if ((ext & 7) == ((ext >> 12) & 7)) { |
965 |
/* div */
|
966 |
tcg_gen_mov_i32 (reg, QREG_DIV1); |
967 |
} else {
|
968 |
/* rem */
|
969 |
tcg_gen_mov_i32 (reg, QREG_DIV2); |
970 |
} |
971 |
s->cc_op = CC_OP_FLAGS; |
972 |
} |
973 |
|
974 |
DISAS_INSN(addsub) |
975 |
{ |
976 |
TCGv reg; |
977 |
TCGv dest; |
978 |
TCGv src; |
979 |
TCGv tmp; |
980 |
TCGv addr; |
981 |
int add;
|
982 |
|
983 |
add = (insn & 0x4000) != 0; |
984 |
reg = DREG(insn, 9);
|
985 |
dest = tcg_temp_new(); |
986 |
if (insn & 0x100) { |
987 |
SRC_EA(tmp, OS_LONG, 0, &addr);
|
988 |
src = reg; |
989 |
} else {
|
990 |
tmp = reg; |
991 |
SRC_EA(src, OS_LONG, 0, NULL); |
992 |
} |
993 |
if (add) {
|
994 |
tcg_gen_add_i32(dest, tmp, src); |
995 |
gen_helper_xflag_lt(QREG_CC_X, dest, src); |
996 |
s->cc_op = CC_OP_ADD; |
997 |
} else {
|
998 |
gen_helper_xflag_lt(QREG_CC_X, tmp, src); |
999 |
tcg_gen_sub_i32(dest, tmp, src); |
1000 |
s->cc_op = CC_OP_SUB; |
1001 |
} |
1002 |
gen_update_cc_add(dest, src); |
1003 |
if (insn & 0x100) { |
1004 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1005 |
} else {
|
1006 |
tcg_gen_mov_i32(reg, dest); |
1007 |
} |
1008 |
} |
1009 |
|
1010 |
|
1011 |
/* Reverse the order of the bits in REG. */
|
1012 |
DISAS_INSN(bitrev) |
1013 |
{ |
1014 |
TCGv reg; |
1015 |
reg = DREG(insn, 0);
|
1016 |
gen_helper_bitrev(reg, reg); |
1017 |
} |
1018 |
|
1019 |
DISAS_INSN(bitop_reg) |
1020 |
{ |
1021 |
int opsize;
|
1022 |
int op;
|
1023 |
TCGv src1; |
1024 |
TCGv src2; |
1025 |
TCGv tmp; |
1026 |
TCGv addr; |
1027 |
TCGv dest; |
1028 |
|
1029 |
if ((insn & 0x38) != 0) |
1030 |
opsize = OS_BYTE; |
1031 |
else
|
1032 |
opsize = OS_LONG; |
1033 |
op = (insn >> 6) & 3; |
1034 |
SRC_EA(src1, opsize, 0, op ? &addr: NULL); |
1035 |
src2 = DREG(insn, 9);
|
1036 |
dest = tcg_temp_new(); |
1037 |
|
1038 |
gen_flush_flags(s); |
1039 |
tmp = tcg_temp_new(); |
1040 |
if (opsize == OS_BYTE)
|
1041 |
tcg_gen_andi_i32(tmp, src2, 7);
|
1042 |
else
|
1043 |
tcg_gen_andi_i32(tmp, src2, 31);
|
1044 |
src2 = tmp; |
1045 |
tmp = tcg_temp_new(); |
1046 |
tcg_gen_shr_i32(tmp, src1, src2); |
1047 |
tcg_gen_andi_i32(tmp, tmp, 1);
|
1048 |
tcg_gen_shli_i32(tmp, tmp, 2);
|
1049 |
/* Clear CCF_Z if bit set. */
|
1050 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
1051 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
1052 |
|
1053 |
tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
|
1054 |
switch (op) {
|
1055 |
case 1: /* bchg */ |
1056 |
tcg_gen_xor_i32(dest, src1, tmp); |
1057 |
break;
|
1058 |
case 2: /* bclr */ |
1059 |
tcg_gen_not_i32(tmp, tmp); |
1060 |
tcg_gen_and_i32(dest, src1, tmp); |
1061 |
break;
|
1062 |
case 3: /* bset */ |
1063 |
tcg_gen_or_i32(dest, src1, tmp); |
1064 |
break;
|
1065 |
default: /* btst */ |
1066 |
break;
|
1067 |
} |
1068 |
if (op)
|
1069 |
DEST_EA(insn, opsize, dest, &addr); |
1070 |
} |
1071 |
|
1072 |
DISAS_INSN(sats) |
1073 |
{ |
1074 |
TCGv reg; |
1075 |
reg = DREG(insn, 0);
|
1076 |
gen_flush_flags(s); |
1077 |
gen_helper_sats(reg, reg, QREG_CC_DEST); |
1078 |
gen_logic_cc(s, reg); |
1079 |
} |
1080 |
|
1081 |
static void gen_push(DisasContext *s, TCGv val) |
1082 |
{ |
1083 |
TCGv tmp; |
1084 |
|
1085 |
tmp = tcg_temp_new(); |
1086 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
1087 |
gen_store(s, OS_LONG, tmp, val); |
1088 |
tcg_gen_mov_i32(QREG_SP, tmp); |
1089 |
} |
1090 |
|
1091 |
DISAS_INSN(movem) |
1092 |
{ |
1093 |
TCGv addr; |
1094 |
int i;
|
1095 |
uint16_t mask; |
1096 |
TCGv reg; |
1097 |
TCGv tmp; |
1098 |
int is_load;
|
1099 |
|
1100 |
mask = lduw_code(s->pc); |
1101 |
s->pc += 2;
|
1102 |
tmp = gen_lea(s, insn, OS_LONG); |
1103 |
if (IS_NULL_QREG(tmp)) {
|
1104 |
gen_addr_fault(s); |
1105 |
return;
|
1106 |
} |
1107 |
addr = tcg_temp_new(); |
1108 |
tcg_gen_mov_i32(addr, tmp); |
1109 |
is_load = ((insn & 0x0400) != 0); |
1110 |
for (i = 0; i < 16; i++, mask >>= 1) { |
1111 |
if (mask & 1) { |
1112 |
if (i < 8) |
1113 |
reg = DREG(i, 0);
|
1114 |
else
|
1115 |
reg = AREG(i, 0);
|
1116 |
if (is_load) {
|
1117 |
tmp = gen_load(s, OS_LONG, addr, 0);
|
1118 |
tcg_gen_mov_i32(reg, tmp); |
1119 |
} else {
|
1120 |
gen_store(s, OS_LONG, addr, reg); |
1121 |
} |
1122 |
if (mask != 1) |
1123 |
tcg_gen_addi_i32(addr, addr, 4);
|
1124 |
} |
1125 |
} |
1126 |
} |
1127 |
|
1128 |
DISAS_INSN(bitop_im) |
1129 |
{ |
1130 |
int opsize;
|
1131 |
int op;
|
1132 |
TCGv src1; |
1133 |
uint32_t mask; |
1134 |
int bitnum;
|
1135 |
TCGv tmp; |
1136 |
TCGv addr; |
1137 |
|
1138 |
if ((insn & 0x38) != 0) |
1139 |
opsize = OS_BYTE; |
1140 |
else
|
1141 |
opsize = OS_LONG; |
1142 |
op = (insn >> 6) & 3; |
1143 |
|
1144 |
bitnum = lduw_code(s->pc); |
1145 |
s->pc += 2;
|
1146 |
if (bitnum & 0xff00) { |
1147 |
disas_undef(s, insn); |
1148 |
return;
|
1149 |
} |
1150 |
|
1151 |
SRC_EA(src1, opsize, 0, op ? &addr: NULL); |
1152 |
|
1153 |
gen_flush_flags(s); |
1154 |
if (opsize == OS_BYTE)
|
1155 |
bitnum &= 7;
|
1156 |
else
|
1157 |
bitnum &= 31;
|
1158 |
mask = 1 << bitnum;
|
1159 |
|
1160 |
tmp = tcg_temp_new(); |
1161 |
assert (CCF_Z == (1 << 2)); |
1162 |
if (bitnum > 2) |
1163 |
tcg_gen_shri_i32(tmp, src1, bitnum - 2);
|
1164 |
else if (bitnum < 2) |
1165 |
tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
|
1166 |
else
|
1167 |
tcg_gen_mov_i32(tmp, src1); |
1168 |
tcg_gen_andi_i32(tmp, tmp, CCF_Z); |
1169 |
/* Clear CCF_Z if bit set. */
|
1170 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
1171 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
1172 |
if (op) {
|
1173 |
switch (op) {
|
1174 |
case 1: /* bchg */ |
1175 |
tcg_gen_xori_i32(tmp, src1, mask); |
1176 |
break;
|
1177 |
case 2: /* bclr */ |
1178 |
tcg_gen_andi_i32(tmp, src1, ~mask); |
1179 |
break;
|
1180 |
case 3: /* bset */ |
1181 |
tcg_gen_ori_i32(tmp, src1, mask); |
1182 |
break;
|
1183 |
default: /* btst */ |
1184 |
break;
|
1185 |
} |
1186 |
DEST_EA(insn, opsize, tmp, &addr); |
1187 |
} |
1188 |
} |
1189 |
|
1190 |
DISAS_INSN(arith_im) |
1191 |
{ |
1192 |
int op;
|
1193 |
uint32_t im; |
1194 |
TCGv src1; |
1195 |
TCGv dest; |
1196 |
TCGv addr; |
1197 |
|
1198 |
op = (insn >> 9) & 7; |
1199 |
SRC_EA(src1, OS_LONG, 0, (op == 6) ? NULL : &addr); |
1200 |
im = read_im32(s); |
1201 |
dest = tcg_temp_new(); |
1202 |
switch (op) {
|
1203 |
case 0: /* ori */ |
1204 |
tcg_gen_ori_i32(dest, src1, im); |
1205 |
gen_logic_cc(s, dest); |
1206 |
break;
|
1207 |
case 1: /* andi */ |
1208 |
tcg_gen_andi_i32(dest, src1, im); |
1209 |
gen_logic_cc(s, dest); |
1210 |
break;
|
1211 |
case 2: /* subi */ |
1212 |
tcg_gen_mov_i32(dest, src1); |
1213 |
gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im)); |
1214 |
tcg_gen_subi_i32(dest, dest, im); |
1215 |
gen_update_cc_add(dest, gen_im32(im)); |
1216 |
s->cc_op = CC_OP_SUB; |
1217 |
break;
|
1218 |
case 3: /* addi */ |
1219 |
tcg_gen_mov_i32(dest, src1); |
1220 |
tcg_gen_addi_i32(dest, dest, im); |
1221 |
gen_update_cc_add(dest, gen_im32(im)); |
1222 |
gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im)); |
1223 |
s->cc_op = CC_OP_ADD; |
1224 |
break;
|
1225 |
case 5: /* eori */ |
1226 |
tcg_gen_xori_i32(dest, src1, im); |
1227 |
gen_logic_cc(s, dest); |
1228 |
break;
|
1229 |
case 6: /* cmpi */ |
1230 |
tcg_gen_mov_i32(dest, src1); |
1231 |
tcg_gen_subi_i32(dest, dest, im); |
1232 |
gen_update_cc_add(dest, gen_im32(im)); |
1233 |
s->cc_op = CC_OP_SUB; |
1234 |
break;
|
1235 |
default:
|
1236 |
abort(); |
1237 |
} |
1238 |
if (op != 6) { |
1239 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1240 |
} |
1241 |
} |
1242 |
|
1243 |
DISAS_INSN(byterev) |
1244 |
{ |
1245 |
TCGv reg; |
1246 |
|
1247 |
reg = DREG(insn, 0);
|
1248 |
tcg_gen_bswap32_i32(reg, reg); |
1249 |
} |
1250 |
|
1251 |
DISAS_INSN(move) |
1252 |
{ |
1253 |
TCGv src; |
1254 |
TCGv dest; |
1255 |
int op;
|
1256 |
int opsize;
|
1257 |
|
1258 |
switch (insn >> 12) { |
1259 |
case 1: /* move.b */ |
1260 |
opsize = OS_BYTE; |
1261 |
break;
|
1262 |
case 2: /* move.l */ |
1263 |
opsize = OS_LONG; |
1264 |
break;
|
1265 |
case 3: /* move.w */ |
1266 |
opsize = OS_WORD; |
1267 |
break;
|
1268 |
default:
|
1269 |
abort(); |
1270 |
} |
1271 |
SRC_EA(src, opsize, 1, NULL); |
1272 |
op = (insn >> 6) & 7; |
1273 |
if (op == 1) { |
1274 |
/* movea */
|
1275 |
/* The value will already have been sign extended. */
|
1276 |
dest = AREG(insn, 9);
|
1277 |
tcg_gen_mov_i32(dest, src); |
1278 |
} else {
|
1279 |
/* normal move */
|
1280 |
uint16_t dest_ea; |
1281 |
dest_ea = ((insn >> 9) & 7) | (op << 3); |
1282 |
DEST_EA(dest_ea, opsize, src, NULL);
|
1283 |
/* This will be correct because loads sign extend. */
|
1284 |
gen_logic_cc(s, src); |
1285 |
} |
1286 |
} |
1287 |
|
1288 |
DISAS_INSN(negx) |
1289 |
{ |
1290 |
TCGv reg; |
1291 |
|
1292 |
gen_flush_flags(s); |
1293 |
reg = DREG(insn, 0);
|
1294 |
gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
|
1295 |
} |
1296 |
|
1297 |
DISAS_INSN(lea) |
1298 |
{ |
1299 |
TCGv reg; |
1300 |
TCGv tmp; |
1301 |
|
1302 |
reg = AREG(insn, 9);
|
1303 |
tmp = gen_lea(s, insn, OS_LONG); |
1304 |
if (IS_NULL_QREG(tmp)) {
|
1305 |
gen_addr_fault(s); |
1306 |
return;
|
1307 |
} |
1308 |
tcg_gen_mov_i32(reg, tmp); |
1309 |
} |
1310 |
|
1311 |
DISAS_INSN(clr) |
1312 |
{ |
1313 |
int opsize;
|
1314 |
|
1315 |
switch ((insn >> 6) & 3) { |
1316 |
case 0: /* clr.b */ |
1317 |
opsize = OS_BYTE; |
1318 |
break;
|
1319 |
case 1: /* clr.w */ |
1320 |
opsize = OS_WORD; |
1321 |
break;
|
1322 |
case 2: /* clr.l */ |
1323 |
opsize = OS_LONG; |
1324 |
break;
|
1325 |
default:
|
1326 |
abort(); |
1327 |
} |
1328 |
DEST_EA(insn, opsize, gen_im32(0), NULL); |
1329 |
gen_logic_cc(s, gen_im32(0));
|
1330 |
} |
1331 |
|
1332 |
static TCGv gen_get_ccr(DisasContext *s)
|
1333 |
{ |
1334 |
TCGv dest; |
1335 |
|
1336 |
gen_flush_flags(s); |
1337 |
dest = tcg_temp_new(); |
1338 |
tcg_gen_shli_i32(dest, QREG_CC_X, 4);
|
1339 |
tcg_gen_or_i32(dest, dest, QREG_CC_DEST); |
1340 |
return dest;
|
1341 |
} |
1342 |
|
1343 |
DISAS_INSN(move_from_ccr) |
1344 |
{ |
1345 |
TCGv reg; |
1346 |
TCGv ccr; |
1347 |
|
1348 |
ccr = gen_get_ccr(s); |
1349 |
reg = DREG(insn, 0);
|
1350 |
gen_partset_reg(OS_WORD, reg, ccr); |
1351 |
} |
1352 |
|
1353 |
DISAS_INSN(neg) |
1354 |
{ |
1355 |
TCGv reg; |
1356 |
TCGv src1; |
1357 |
|
1358 |
reg = DREG(insn, 0);
|
1359 |
src1 = tcg_temp_new(); |
1360 |
tcg_gen_mov_i32(src1, reg); |
1361 |
tcg_gen_neg_i32(reg, src1); |
1362 |
s->cc_op = CC_OP_SUB; |
1363 |
gen_update_cc_add(reg, src1); |
1364 |
gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
|
1365 |
s->cc_op = CC_OP_SUB; |
1366 |
} |
1367 |
|
1368 |
static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only) |
1369 |
{ |
1370 |
tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
|
1371 |
tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4); |
1372 |
if (!ccr_only) {
|
1373 |
gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
|
1374 |
} |
1375 |
} |
1376 |
|
1377 |
static void gen_set_sr(DisasContext *s, uint16_t insn, int ccr_only) |
1378 |
{ |
1379 |
TCGv tmp; |
1380 |
TCGv reg; |
1381 |
|
1382 |
s->cc_op = CC_OP_FLAGS; |
1383 |
if ((insn & 0x38) == 0) |
1384 |
{ |
1385 |
tmp = tcg_temp_new(); |
1386 |
reg = DREG(insn, 0);
|
1387 |
tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
|
1388 |
tcg_gen_shri_i32(tmp, reg, 4);
|
1389 |
tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
|
1390 |
if (!ccr_only) {
|
1391 |
gen_helper_set_sr(cpu_env, reg); |
1392 |
} |
1393 |
} |
1394 |
else if ((insn & 0x3f) == 0x3c) |
1395 |
{ |
1396 |
uint16_t val; |
1397 |
val = lduw_code(s->pc); |
1398 |
s->pc += 2;
|
1399 |
gen_set_sr_im(s, val, ccr_only); |
1400 |
} |
1401 |
else
|
1402 |
disas_undef(s, insn); |
1403 |
} |
1404 |
|
1405 |
DISAS_INSN(move_to_ccr) |
1406 |
{ |
1407 |
gen_set_sr(s, insn, 1);
|
1408 |
} |
1409 |
|
1410 |
DISAS_INSN(not) |
1411 |
{ |
1412 |
TCGv reg; |
1413 |
|
1414 |
reg = DREG(insn, 0);
|
1415 |
tcg_gen_not_i32(reg, reg); |
1416 |
gen_logic_cc(s, reg); |
1417 |
} |
1418 |
|
1419 |
DISAS_INSN(swap) |
1420 |
{ |
1421 |
TCGv src1; |
1422 |
TCGv src2; |
1423 |
TCGv reg; |
1424 |
|
1425 |
src1 = tcg_temp_new(); |
1426 |
src2 = tcg_temp_new(); |
1427 |
reg = DREG(insn, 0);
|
1428 |
tcg_gen_shli_i32(src1, reg, 16);
|
1429 |
tcg_gen_shri_i32(src2, reg, 16);
|
1430 |
tcg_gen_or_i32(reg, src1, src2); |
1431 |
gen_logic_cc(s, reg); |
1432 |
} |
1433 |
|
1434 |
DISAS_INSN(pea) |
1435 |
{ |
1436 |
TCGv tmp; |
1437 |
|
1438 |
tmp = gen_lea(s, insn, OS_LONG); |
1439 |
if (IS_NULL_QREG(tmp)) {
|
1440 |
gen_addr_fault(s); |
1441 |
return;
|
1442 |
} |
1443 |
gen_push(s, tmp); |
1444 |
} |
1445 |
|
1446 |
DISAS_INSN(ext) |
1447 |
{ |
1448 |
int op;
|
1449 |
TCGv reg; |
1450 |
TCGv tmp; |
1451 |
|
1452 |
reg = DREG(insn, 0);
|
1453 |
op = (insn >> 6) & 7; |
1454 |
tmp = tcg_temp_new(); |
1455 |
if (op == 3) |
1456 |
tcg_gen_ext16s_i32(tmp, reg); |
1457 |
else
|
1458 |
tcg_gen_ext8s_i32(tmp, reg); |
1459 |
if (op == 2) |
1460 |
gen_partset_reg(OS_WORD, reg, tmp); |
1461 |
else
|
1462 |
tcg_gen_mov_i32(reg, tmp); |
1463 |
gen_logic_cc(s, tmp); |
1464 |
} |
1465 |
|
1466 |
DISAS_INSN(tst) |
1467 |
{ |
1468 |
int opsize;
|
1469 |
TCGv tmp; |
1470 |
|
1471 |
switch ((insn >> 6) & 3) { |
1472 |
case 0: /* tst.b */ |
1473 |
opsize = OS_BYTE; |
1474 |
break;
|
1475 |
case 1: /* tst.w */ |
1476 |
opsize = OS_WORD; |
1477 |
break;
|
1478 |
case 2: /* tst.l */ |
1479 |
opsize = OS_LONG; |
1480 |
break;
|
1481 |
default:
|
1482 |
abort(); |
1483 |
} |
1484 |
SRC_EA(tmp, opsize, 1, NULL); |
1485 |
gen_logic_cc(s, tmp); |
1486 |
} |
1487 |
|
1488 |
DISAS_INSN(pulse) |
1489 |
{ |
1490 |
/* Implemented as a NOP. */
|
1491 |
} |
1492 |
|
1493 |
DISAS_INSN(illegal) |
1494 |
{ |
1495 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
1496 |
} |
1497 |
|
1498 |
/* ??? This should be atomic. */
|
1499 |
DISAS_INSN(tas) |
1500 |
{ |
1501 |
TCGv dest; |
1502 |
TCGv src1; |
1503 |
TCGv addr; |
1504 |
|
1505 |
dest = tcg_temp_new(); |
1506 |
SRC_EA(src1, OS_BYTE, 1, &addr);
|
1507 |
gen_logic_cc(s, src1); |
1508 |
tcg_gen_ori_i32(dest, src1, 0x80);
|
1509 |
DEST_EA(insn, OS_BYTE, dest, &addr); |
1510 |
} |
1511 |
|
1512 |
DISAS_INSN(mull) |
1513 |
{ |
1514 |
uint16_t ext; |
1515 |
TCGv reg; |
1516 |
TCGv src1; |
1517 |
TCGv dest; |
1518 |
|
1519 |
/* The upper 32 bits of the product are discarded, so
|
1520 |
muls.l and mulu.l are functionally equivalent. */
|
1521 |
ext = lduw_code(s->pc); |
1522 |
s->pc += 2;
|
1523 |
if (ext & 0x87ff) { |
1524 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
1525 |
return;
|
1526 |
} |
1527 |
reg = DREG(ext, 12);
|
1528 |
SRC_EA(src1, OS_LONG, 0, NULL); |
1529 |
dest = tcg_temp_new(); |
1530 |
tcg_gen_mul_i32(dest, src1, reg); |
1531 |
tcg_gen_mov_i32(reg, dest); |
1532 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
1533 |
gen_logic_cc(s, dest); |
1534 |
} |
1535 |
|
1536 |
DISAS_INSN(link) |
1537 |
{ |
1538 |
int16_t offset; |
1539 |
TCGv reg; |
1540 |
TCGv tmp; |
1541 |
|
1542 |
offset = ldsw_code(s->pc); |
1543 |
s->pc += 2;
|
1544 |
reg = AREG(insn, 0);
|
1545 |
tmp = tcg_temp_new(); |
1546 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
1547 |
gen_store(s, OS_LONG, tmp, reg); |
1548 |
if ((insn & 7) != 7) |
1549 |
tcg_gen_mov_i32(reg, tmp); |
1550 |
tcg_gen_addi_i32(QREG_SP, tmp, offset); |
1551 |
} |
1552 |
|
1553 |
DISAS_INSN(unlk) |
1554 |
{ |
1555 |
TCGv src; |
1556 |
TCGv reg; |
1557 |
TCGv tmp; |
1558 |
|
1559 |
src = tcg_temp_new(); |
1560 |
reg = AREG(insn, 0);
|
1561 |
tcg_gen_mov_i32(src, reg); |
1562 |
tmp = gen_load(s, OS_LONG, src, 0);
|
1563 |
tcg_gen_mov_i32(reg, tmp); |
1564 |
tcg_gen_addi_i32(QREG_SP, src, 4);
|
1565 |
} |
1566 |
|
1567 |
DISAS_INSN(nop) |
1568 |
{ |
1569 |
} |
1570 |
|
1571 |
DISAS_INSN(rts) |
1572 |
{ |
1573 |
TCGv tmp; |
1574 |
|
1575 |
tmp = gen_load(s, OS_LONG, QREG_SP, 0);
|
1576 |
tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
|
1577 |
gen_jmp(s, tmp); |
1578 |
} |
1579 |
|
1580 |
DISAS_INSN(jump) |
1581 |
{ |
1582 |
TCGv tmp; |
1583 |
|
1584 |
/* Load the target address first to ensure correct exception
|
1585 |
behavior. */
|
1586 |
tmp = gen_lea(s, insn, OS_LONG); |
1587 |
if (IS_NULL_QREG(tmp)) {
|
1588 |
gen_addr_fault(s); |
1589 |
return;
|
1590 |
} |
1591 |
if ((insn & 0x40) == 0) { |
1592 |
/* jsr */
|
1593 |
gen_push(s, gen_im32(s->pc)); |
1594 |
} |
1595 |
gen_jmp(s, tmp); |
1596 |
} |
1597 |
|
1598 |
DISAS_INSN(addsubq) |
1599 |
{ |
1600 |
TCGv src1; |
1601 |
TCGv src2; |
1602 |
TCGv dest; |
1603 |
int val;
|
1604 |
TCGv addr; |
1605 |
|
1606 |
SRC_EA(src1, OS_LONG, 0, &addr);
|
1607 |
val = (insn >> 9) & 7; |
1608 |
if (val == 0) |
1609 |
val = 8;
|
1610 |
dest = tcg_temp_new(); |
1611 |
tcg_gen_mov_i32(dest, src1); |
1612 |
if ((insn & 0x38) == 0x08) { |
1613 |
/* Don't update condition codes if the destination is an
|
1614 |
address register. */
|
1615 |
if (insn & 0x0100) { |
1616 |
tcg_gen_subi_i32(dest, dest, val); |
1617 |
} else {
|
1618 |
tcg_gen_addi_i32(dest, dest, val); |
1619 |
} |
1620 |
} else {
|
1621 |
src2 = gen_im32(val); |
1622 |
if (insn & 0x0100) { |
1623 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
1624 |
tcg_gen_subi_i32(dest, dest, val); |
1625 |
s->cc_op = CC_OP_SUB; |
1626 |
} else {
|
1627 |
tcg_gen_addi_i32(dest, dest, val); |
1628 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
1629 |
s->cc_op = CC_OP_ADD; |
1630 |
} |
1631 |
gen_update_cc_add(dest, src2); |
1632 |
} |
1633 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1634 |
} |
1635 |
|
1636 |
DISAS_INSN(tpf) |
1637 |
{ |
1638 |
switch (insn & 7) { |
1639 |
case 2: /* One extension word. */ |
1640 |
s->pc += 2;
|
1641 |
break;
|
1642 |
case 3: /* Two extension words. */ |
1643 |
s->pc += 4;
|
1644 |
break;
|
1645 |
case 4: /* No extension words. */ |
1646 |
break;
|
1647 |
default:
|
1648 |
disas_undef(s, insn); |
1649 |
} |
1650 |
} |
1651 |
|
1652 |
DISAS_INSN(branch) |
1653 |
{ |
1654 |
int32_t offset; |
1655 |
uint32_t base; |
1656 |
int op;
|
1657 |
int l1;
|
1658 |
|
1659 |
base = s->pc; |
1660 |
op = (insn >> 8) & 0xf; |
1661 |
offset = (int8_t)insn; |
1662 |
if (offset == 0) { |
1663 |
offset = ldsw_code(s->pc); |
1664 |
s->pc += 2;
|
1665 |
} else if (offset == -1) { |
1666 |
offset = read_im32(s); |
1667 |
} |
1668 |
if (op == 1) { |
1669 |
/* bsr */
|
1670 |
gen_push(s, gen_im32(s->pc)); |
1671 |
} |
1672 |
gen_flush_cc_op(s); |
1673 |
if (op > 1) { |
1674 |
/* Bcc */
|
1675 |
l1 = gen_new_label(); |
1676 |
gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1); |
1677 |
gen_jmp_tb(s, 1, base + offset);
|
1678 |
gen_set_label(l1); |
1679 |
gen_jmp_tb(s, 0, s->pc);
|
1680 |
} else {
|
1681 |
/* Unconditional branch. */
|
1682 |
gen_jmp_tb(s, 0, base + offset);
|
1683 |
} |
1684 |
} |
1685 |
|
1686 |
DISAS_INSN(moveq) |
1687 |
{ |
1688 |
uint32_t val; |
1689 |
|
1690 |
val = (int8_t)insn; |
1691 |
tcg_gen_movi_i32(DREG(insn, 9), val);
|
1692 |
gen_logic_cc(s, tcg_const_i32(val)); |
1693 |
} |
1694 |
|
1695 |
DISAS_INSN(mvzs) |
1696 |
{ |
1697 |
int opsize;
|
1698 |
TCGv src; |
1699 |
TCGv reg; |
1700 |
|
1701 |
if (insn & 0x40) |
1702 |
opsize = OS_WORD; |
1703 |
else
|
1704 |
opsize = OS_BYTE; |
1705 |
SRC_EA(src, opsize, (insn & 0x80) == 0, NULL); |
1706 |
reg = DREG(insn, 9);
|
1707 |
tcg_gen_mov_i32(reg, src); |
1708 |
gen_logic_cc(s, src); |
1709 |
} |
1710 |
|
1711 |
DISAS_INSN(or) |
1712 |
{ |
1713 |
TCGv reg; |
1714 |
TCGv dest; |
1715 |
TCGv src; |
1716 |
TCGv addr; |
1717 |
|
1718 |
reg = DREG(insn, 9);
|
1719 |
dest = tcg_temp_new(); |
1720 |
if (insn & 0x100) { |
1721 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1722 |
tcg_gen_or_i32(dest, src, reg); |
1723 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1724 |
} else {
|
1725 |
SRC_EA(src, OS_LONG, 0, NULL); |
1726 |
tcg_gen_or_i32(dest, src, reg); |
1727 |
tcg_gen_mov_i32(reg, dest); |
1728 |
} |
1729 |
gen_logic_cc(s, dest); |
1730 |
} |
1731 |
|
1732 |
DISAS_INSN(suba) |
1733 |
{ |
1734 |
TCGv src; |
1735 |
TCGv reg; |
1736 |
|
1737 |
SRC_EA(src, OS_LONG, 0, NULL); |
1738 |
reg = AREG(insn, 9);
|
1739 |
tcg_gen_sub_i32(reg, reg, src); |
1740 |
} |
1741 |
|
1742 |
DISAS_INSN(subx) |
1743 |
{ |
1744 |
TCGv reg; |
1745 |
TCGv src; |
1746 |
|
1747 |
gen_flush_flags(s); |
1748 |
reg = DREG(insn, 9);
|
1749 |
src = DREG(insn, 0);
|
1750 |
gen_helper_subx_cc(reg, cpu_env, reg, src); |
1751 |
} |
1752 |
|
1753 |
DISAS_INSN(mov3q) |
1754 |
{ |
1755 |
TCGv src; |
1756 |
int val;
|
1757 |
|
1758 |
val = (insn >> 9) & 7; |
1759 |
if (val == 0) |
1760 |
val = -1;
|
1761 |
src = gen_im32(val); |
1762 |
gen_logic_cc(s, src); |
1763 |
DEST_EA(insn, OS_LONG, src, NULL);
|
1764 |
} |
1765 |
|
1766 |
DISAS_INSN(cmp) |
1767 |
{ |
1768 |
int op;
|
1769 |
TCGv src; |
1770 |
TCGv reg; |
1771 |
TCGv dest; |
1772 |
int opsize;
|
1773 |
|
1774 |
op = (insn >> 6) & 3; |
1775 |
switch (op) {
|
1776 |
case 0: /* cmp.b */ |
1777 |
opsize = OS_BYTE; |
1778 |
s->cc_op = CC_OP_CMPB; |
1779 |
break;
|
1780 |
case 1: /* cmp.w */ |
1781 |
opsize = OS_WORD; |
1782 |
s->cc_op = CC_OP_CMPW; |
1783 |
break;
|
1784 |
case 2: /* cmp.l */ |
1785 |
opsize = OS_LONG; |
1786 |
s->cc_op = CC_OP_SUB; |
1787 |
break;
|
1788 |
default:
|
1789 |
abort(); |
1790 |
} |
1791 |
SRC_EA(src, opsize, 1, NULL); |
1792 |
reg = DREG(insn, 9);
|
1793 |
dest = tcg_temp_new(); |
1794 |
tcg_gen_sub_i32(dest, reg, src); |
1795 |
gen_update_cc_add(dest, src); |
1796 |
} |
1797 |
|
1798 |
DISAS_INSN(cmpa) |
1799 |
{ |
1800 |
int opsize;
|
1801 |
TCGv src; |
1802 |
TCGv reg; |
1803 |
TCGv dest; |
1804 |
|
1805 |
if (insn & 0x100) { |
1806 |
opsize = OS_LONG; |
1807 |
} else {
|
1808 |
opsize = OS_WORD; |
1809 |
} |
1810 |
SRC_EA(src, opsize, 1, NULL); |
1811 |
reg = AREG(insn, 9);
|
1812 |
dest = tcg_temp_new(); |
1813 |
tcg_gen_sub_i32(dest, reg, src); |
1814 |
gen_update_cc_add(dest, src); |
1815 |
s->cc_op = CC_OP_SUB; |
1816 |
} |
1817 |
|
1818 |
DISAS_INSN(eor) |
1819 |
{ |
1820 |
TCGv src; |
1821 |
TCGv reg; |
1822 |
TCGv dest; |
1823 |
TCGv addr; |
1824 |
|
1825 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1826 |
reg = DREG(insn, 9);
|
1827 |
dest = tcg_temp_new(); |
1828 |
tcg_gen_xor_i32(dest, src, reg); |
1829 |
gen_logic_cc(s, dest); |
1830 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1831 |
} |
1832 |
|
1833 |
DISAS_INSN(and) |
1834 |
{ |
1835 |
TCGv src; |
1836 |
TCGv reg; |
1837 |
TCGv dest; |
1838 |
TCGv addr; |
1839 |
|
1840 |
reg = DREG(insn, 9);
|
1841 |
dest = tcg_temp_new(); |
1842 |
if (insn & 0x100) { |
1843 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1844 |
tcg_gen_and_i32(dest, src, reg); |
1845 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1846 |
} else {
|
1847 |
SRC_EA(src, OS_LONG, 0, NULL); |
1848 |
tcg_gen_and_i32(dest, src, reg); |
1849 |
tcg_gen_mov_i32(reg, dest); |
1850 |
} |
1851 |
gen_logic_cc(s, dest); |
1852 |
} |
1853 |
|
1854 |
DISAS_INSN(adda) |
1855 |
{ |
1856 |
TCGv src; |
1857 |
TCGv reg; |
1858 |
|
1859 |
SRC_EA(src, OS_LONG, 0, NULL); |
1860 |
reg = AREG(insn, 9);
|
1861 |
tcg_gen_add_i32(reg, reg, src); |
1862 |
} |
1863 |
|
1864 |
DISAS_INSN(addx) |
1865 |
{ |
1866 |
TCGv reg; |
1867 |
TCGv src; |
1868 |
|
1869 |
gen_flush_flags(s); |
1870 |
reg = DREG(insn, 9);
|
1871 |
src = DREG(insn, 0);
|
1872 |
gen_helper_addx_cc(reg, cpu_env, reg, src); |
1873 |
s->cc_op = CC_OP_FLAGS; |
1874 |
} |
1875 |
|
1876 |
/* TODO: This could be implemented without helper functions. */
|
1877 |
DISAS_INSN(shift_im) |
1878 |
{ |
1879 |
TCGv reg; |
1880 |
int tmp;
|
1881 |
TCGv shift; |
1882 |
|
1883 |
reg = DREG(insn, 0);
|
1884 |
tmp = (insn >> 9) & 7; |
1885 |
if (tmp == 0) |
1886 |
tmp = 8;
|
1887 |
shift = gen_im32(tmp); |
1888 |
/* No need to flush flags becuse we know we will set C flag. */
|
1889 |
if (insn & 0x100) { |
1890 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
1891 |
} else {
|
1892 |
if (insn & 8) { |
1893 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
1894 |
} else {
|
1895 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
1896 |
} |
1897 |
} |
1898 |
s->cc_op = CC_OP_SHIFT; |
1899 |
} |
1900 |
|
1901 |
DISAS_INSN(shift_reg) |
1902 |
{ |
1903 |
TCGv reg; |
1904 |
TCGv shift; |
1905 |
|
1906 |
reg = DREG(insn, 0);
|
1907 |
shift = DREG(insn, 9);
|
1908 |
/* Shift by zero leaves C flag unmodified. */
|
1909 |
gen_flush_flags(s); |
1910 |
if (insn & 0x100) { |
1911 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
1912 |
} else {
|
1913 |
if (insn & 8) { |
1914 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
1915 |
} else {
|
1916 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
1917 |
} |
1918 |
} |
1919 |
s->cc_op = CC_OP_SHIFT; |
1920 |
} |
1921 |
|
1922 |
DISAS_INSN(ff1) |
1923 |
{ |
1924 |
TCGv reg; |
1925 |
reg = DREG(insn, 0);
|
1926 |
gen_logic_cc(s, reg); |
1927 |
gen_helper_ff1(reg, reg); |
1928 |
} |
1929 |
|
1930 |
static TCGv gen_get_sr(DisasContext *s)
|
1931 |
{ |
1932 |
TCGv ccr; |
1933 |
TCGv sr; |
1934 |
|
1935 |
ccr = gen_get_ccr(s); |
1936 |
sr = tcg_temp_new(); |
1937 |
tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
|
1938 |
tcg_gen_or_i32(sr, sr, ccr); |
1939 |
return sr;
|
1940 |
} |
1941 |
|
1942 |
DISAS_INSN(strldsr) |
1943 |
{ |
1944 |
uint16_t ext; |
1945 |
uint32_t addr; |
1946 |
|
1947 |
addr = s->pc - 2;
|
1948 |
ext = lduw_code(s->pc); |
1949 |
s->pc += 2;
|
1950 |
if (ext != 0x46FC) { |
1951 |
gen_exception(s, addr, EXCP_UNSUPPORTED); |
1952 |
return;
|
1953 |
} |
1954 |
ext = lduw_code(s->pc); |
1955 |
s->pc += 2;
|
1956 |
if (IS_USER(s) || (ext & SR_S) == 0) { |
1957 |
gen_exception(s, addr, EXCP_PRIVILEGE); |
1958 |
return;
|
1959 |
} |
1960 |
gen_push(s, gen_get_sr(s)); |
1961 |
gen_set_sr_im(s, ext, 0);
|
1962 |
} |
1963 |
|
1964 |
DISAS_INSN(move_from_sr) |
1965 |
{ |
1966 |
TCGv reg; |
1967 |
TCGv sr; |
1968 |
|
1969 |
if (IS_USER(s)) {
|
1970 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1971 |
return;
|
1972 |
} |
1973 |
sr = gen_get_sr(s); |
1974 |
reg = DREG(insn, 0);
|
1975 |
gen_partset_reg(OS_WORD, reg, sr); |
1976 |
} |
1977 |
|
1978 |
DISAS_INSN(move_to_sr) |
1979 |
{ |
1980 |
if (IS_USER(s)) {
|
1981 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1982 |
return;
|
1983 |
} |
1984 |
gen_set_sr(s, insn, 0);
|
1985 |
gen_lookup_tb(s); |
1986 |
} |
1987 |
|
1988 |
DISAS_INSN(move_from_usp) |
1989 |
{ |
1990 |
if (IS_USER(s)) {
|
1991 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1992 |
return;
|
1993 |
} |
1994 |
/* TODO: Implement USP. */
|
1995 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
1996 |
} |
1997 |
|
1998 |
DISAS_INSN(move_to_usp) |
1999 |
{ |
2000 |
if (IS_USER(s)) {
|
2001 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2002 |
return;
|
2003 |
} |
2004 |
/* TODO: Implement USP. */
|
2005 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
2006 |
} |
2007 |
|
2008 |
DISAS_INSN(halt) |
2009 |
{ |
2010 |
gen_exception(s, s->pc, EXCP_HALT_INSN); |
2011 |
} |
2012 |
|
2013 |
DISAS_INSN(stop) |
2014 |
{ |
2015 |
uint16_t ext; |
2016 |
|
2017 |
if (IS_USER(s)) {
|
2018 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2019 |
return;
|
2020 |
} |
2021 |
|
2022 |
ext = lduw_code(s->pc); |
2023 |
s->pc += 2;
|
2024 |
|
2025 |
gen_set_sr_im(s, ext, 0);
|
2026 |
tcg_gen_movi_i32(QREG_HALTED, 1);
|
2027 |
gen_exception(s, s->pc, EXCP_HLT); |
2028 |
} |
2029 |
|
2030 |
DISAS_INSN(rte) |
2031 |
{ |
2032 |
if (IS_USER(s)) {
|
2033 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2034 |
return;
|
2035 |
} |
2036 |
gen_exception(s, s->pc - 2, EXCP_RTE);
|
2037 |
} |
2038 |
|
2039 |
DISAS_INSN(movec) |
2040 |
{ |
2041 |
uint16_t ext; |
2042 |
TCGv reg; |
2043 |
|
2044 |
if (IS_USER(s)) {
|
2045 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2046 |
return;
|
2047 |
} |
2048 |
|
2049 |
ext = lduw_code(s->pc); |
2050 |
s->pc += 2;
|
2051 |
|
2052 |
if (ext & 0x8000) { |
2053 |
reg = AREG(ext, 12);
|
2054 |
} else {
|
2055 |
reg = DREG(ext, 12);
|
2056 |
} |
2057 |
gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
|
2058 |
gen_lookup_tb(s); |
2059 |
} |
2060 |
|
2061 |
DISAS_INSN(intouch) |
2062 |
{ |
2063 |
if (IS_USER(s)) {
|
2064 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2065 |
return;
|
2066 |
} |
2067 |
/* ICache fetch. Implement as no-op. */
|
2068 |
} |
2069 |
|
2070 |
DISAS_INSN(cpushl) |
2071 |
{ |
2072 |
if (IS_USER(s)) {
|
2073 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2074 |
return;
|
2075 |
} |
2076 |
/* Cache push/invalidate. Implement as no-op. */
|
2077 |
} |
2078 |
|
2079 |
DISAS_INSN(wddata) |
2080 |
{ |
2081 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2082 |
} |
2083 |
|
2084 |
DISAS_INSN(wdebug) |
2085 |
{ |
2086 |
if (IS_USER(s)) {
|
2087 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2088 |
return;
|
2089 |
} |
2090 |
/* TODO: Implement wdebug. */
|
2091 |
qemu_assert(0, "WDEBUG not implemented"); |
2092 |
} |
2093 |
|
2094 |
DISAS_INSN(trap) |
2095 |
{ |
2096 |
gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf)); |
2097 |
} |
2098 |
|
2099 |
/* ??? FP exceptions are not implemented. Most exceptions are deferred until
|
2100 |
immediately before the next FP instruction is executed. */
|
2101 |
DISAS_INSN(fpu) |
2102 |
{ |
2103 |
uint16_t ext; |
2104 |
int32_t offset; |
2105 |
int opmode;
|
2106 |
TCGv_i64 src; |
2107 |
TCGv_i64 dest; |
2108 |
TCGv_i64 res; |
2109 |
TCGv tmp32; |
2110 |
int round;
|
2111 |
int set_dest;
|
2112 |
int opsize;
|
2113 |
|
2114 |
ext = lduw_code(s->pc); |
2115 |
s->pc += 2;
|
2116 |
opmode = ext & 0x7f;
|
2117 |
switch ((ext >> 13) & 7) { |
2118 |
case 0: case 2: |
2119 |
break;
|
2120 |
case 1: |
2121 |
goto undef;
|
2122 |
case 3: /* fmove out */ |
2123 |
src = FREG(ext, 7);
|
2124 |
tmp32 = tcg_temp_new_i32(); |
2125 |
/* fmove */
|
2126 |
/* ??? TODO: Proper behavior on overflow. */
|
2127 |
switch ((ext >> 10) & 7) { |
2128 |
case 0: |
2129 |
opsize = OS_LONG; |
2130 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
2131 |
break;
|
2132 |
case 1: |
2133 |
opsize = OS_SINGLE; |
2134 |
gen_helper_f64_to_f32(tmp32, cpu_env, src); |
2135 |
break;
|
2136 |
case 4: |
2137 |
opsize = OS_WORD; |
2138 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
2139 |
break;
|
2140 |
case 5: /* OS_DOUBLE */ |
2141 |
tcg_gen_mov_i32(tmp32, AREG(insn, 0));
|
2142 |
switch ((insn >> 3) & 7) { |
2143 |
case 2: |
2144 |
case 3: |
2145 |
break;
|
2146 |
case 4: |
2147 |
tcg_gen_addi_i32(tmp32, tmp32, -8);
|
2148 |
break;
|
2149 |
case 5: |
2150 |
offset = ldsw_code(s->pc); |
2151 |
s->pc += 2;
|
2152 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
2153 |
break;
|
2154 |
default:
|
2155 |
goto undef;
|
2156 |
} |
2157 |
gen_store64(s, tmp32, src); |
2158 |
switch ((insn >> 3) & 7) { |
2159 |
case 3: |
2160 |
tcg_gen_addi_i32(tmp32, tmp32, 8);
|
2161 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2162 |
break;
|
2163 |
case 4: |
2164 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2165 |
break;
|
2166 |
} |
2167 |
tcg_temp_free_i32(tmp32); |
2168 |
return;
|
2169 |
case 6: |
2170 |
opsize = OS_BYTE; |
2171 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
2172 |
break;
|
2173 |
default:
|
2174 |
goto undef;
|
2175 |
} |
2176 |
DEST_EA(insn, opsize, tmp32, NULL);
|
2177 |
tcg_temp_free_i32(tmp32); |
2178 |
return;
|
2179 |
case 4: /* fmove to control register. */ |
2180 |
switch ((ext >> 10) & 7) { |
2181 |
case 4: /* FPCR */ |
2182 |
/* Not implemented. Ignore writes. */
|
2183 |
break;
|
2184 |
case 1: /* FPIAR */ |
2185 |
case 2: /* FPSR */ |
2186 |
default:
|
2187 |
cpu_abort(NULL, "Unimplemented: fmove to control %d", |
2188 |
(ext >> 10) & 7); |
2189 |
} |
2190 |
break;
|
2191 |
case 5: /* fmove from control register. */ |
2192 |
switch ((ext >> 10) & 7) { |
2193 |
case 4: /* FPCR */ |
2194 |
/* Not implemented. Always return zero. */
|
2195 |
tmp32 = gen_im32(0);
|
2196 |
break;
|
2197 |
case 1: /* FPIAR */ |
2198 |
case 2: /* FPSR */ |
2199 |
default:
|
2200 |
cpu_abort(NULL, "Unimplemented: fmove from control %d", |
2201 |
(ext >> 10) & 7); |
2202 |
goto undef;
|
2203 |
} |
2204 |
DEST_EA(insn, OS_LONG, tmp32, NULL);
|
2205 |
break;
|
2206 |
case 6: /* fmovem */ |
2207 |
case 7: |
2208 |
{ |
2209 |
TCGv addr; |
2210 |
uint16_t mask; |
2211 |
int i;
|
2212 |
if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0) |
2213 |
goto undef;
|
2214 |
tmp32 = gen_lea(s, insn, OS_LONG); |
2215 |
if (IS_NULL_QREG(tmp32)) {
|
2216 |
gen_addr_fault(s); |
2217 |
return;
|
2218 |
} |
2219 |
addr = tcg_temp_new_i32(); |
2220 |
tcg_gen_mov_i32(addr, tmp32); |
2221 |
mask = 0x80;
|
2222 |
for (i = 0; i < 8; i++) { |
2223 |
if (ext & mask) {
|
2224 |
s->is_mem = 1;
|
2225 |
dest = FREG(i, 0);
|
2226 |
if (ext & (1 << 13)) { |
2227 |
/* store */
|
2228 |
tcg_gen_qemu_stf64(dest, addr, IS_USER(s)); |
2229 |
} else {
|
2230 |
/* load */
|
2231 |
tcg_gen_qemu_ldf64(dest, addr, IS_USER(s)); |
2232 |
} |
2233 |
if (ext & (mask - 1)) |
2234 |
tcg_gen_addi_i32(addr, addr, 8);
|
2235 |
} |
2236 |
mask >>= 1;
|
2237 |
} |
2238 |
tcg_temp_free_i32(addr); |
2239 |
} |
2240 |
return;
|
2241 |
} |
2242 |
if (ext & (1 << 14)) { |
2243 |
/* Source effective address. */
|
2244 |
switch ((ext >> 10) & 7) { |
2245 |
case 0: opsize = OS_LONG; break; |
2246 |
case 1: opsize = OS_SINGLE; break; |
2247 |
case 4: opsize = OS_WORD; break; |
2248 |
case 5: opsize = OS_DOUBLE; break; |
2249 |
case 6: opsize = OS_BYTE; break; |
2250 |
default:
|
2251 |
goto undef;
|
2252 |
} |
2253 |
if (opsize == OS_DOUBLE) {
|
2254 |
tmp32 = tcg_temp_new_i32(); |
2255 |
tcg_gen_mov_i32(tmp32, AREG(insn, 0));
|
2256 |
switch ((insn >> 3) & 7) { |
2257 |
case 2: |
2258 |
case 3: |
2259 |
break;
|
2260 |
case 4: |
2261 |
tcg_gen_addi_i32(tmp32, tmp32, -8);
|
2262 |
break;
|
2263 |
case 5: |
2264 |
offset = ldsw_code(s->pc); |
2265 |
s->pc += 2;
|
2266 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
2267 |
break;
|
2268 |
case 7: |
2269 |
offset = ldsw_code(s->pc); |
2270 |
offset += s->pc - 2;
|
2271 |
s->pc += 2;
|
2272 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
2273 |
break;
|
2274 |
default:
|
2275 |
goto undef;
|
2276 |
} |
2277 |
src = gen_load64(s, tmp32); |
2278 |
switch ((insn >> 3) & 7) { |
2279 |
case 3: |
2280 |
tcg_gen_addi_i32(tmp32, tmp32, 8);
|
2281 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2282 |
break;
|
2283 |
case 4: |
2284 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2285 |
break;
|
2286 |
} |
2287 |
tcg_temp_free_i32(tmp32); |
2288 |
} else {
|
2289 |
SRC_EA(tmp32, opsize, 1, NULL); |
2290 |
src = tcg_temp_new_i64(); |
2291 |
switch (opsize) {
|
2292 |
case OS_LONG:
|
2293 |
case OS_WORD:
|
2294 |
case OS_BYTE:
|
2295 |
gen_helper_i32_to_f64(src, cpu_env, tmp32); |
2296 |
break;
|
2297 |
case OS_SINGLE:
|
2298 |
gen_helper_f32_to_f64(src, cpu_env, tmp32); |
2299 |
break;
|
2300 |
} |
2301 |
} |
2302 |
} else {
|
2303 |
/* Source register. */
|
2304 |
src = FREG(ext, 10);
|
2305 |
} |
2306 |
dest = FREG(ext, 7);
|
2307 |
res = tcg_temp_new_i64(); |
2308 |
if (opmode != 0x3a) |
2309 |
tcg_gen_mov_f64(res, dest); |
2310 |
round = 1;
|
2311 |
set_dest = 1;
|
2312 |
switch (opmode) {
|
2313 |
case 0: case 0x40: case 0x44: /* fmove */ |
2314 |
tcg_gen_mov_f64(res, src); |
2315 |
break;
|
2316 |
case 1: /* fint */ |
2317 |
gen_helper_iround_f64(res, cpu_env, src); |
2318 |
round = 0;
|
2319 |
break;
|
2320 |
case 3: /* fintrz */ |
2321 |
gen_helper_itrunc_f64(res, cpu_env, src); |
2322 |
round = 0;
|
2323 |
break;
|
2324 |
case 4: case 0x41: case 0x45: /* fsqrt */ |
2325 |
gen_helper_sqrt_f64(res, cpu_env, src); |
2326 |
break;
|
2327 |
case 0x18: case 0x58: case 0x5c: /* fabs */ |
2328 |
gen_helper_abs_f64(res, src); |
2329 |
break;
|
2330 |
case 0x1a: case 0x5a: case 0x5e: /* fneg */ |
2331 |
gen_helper_chs_f64(res, src); |
2332 |
break;
|
2333 |
case 0x20: case 0x60: case 0x64: /* fdiv */ |
2334 |
gen_helper_div_f64(res, cpu_env, res, src); |
2335 |
break;
|
2336 |
case 0x22: case 0x62: case 0x66: /* fadd */ |
2337 |
gen_helper_add_f64(res, cpu_env, res, src); |
2338 |
break;
|
2339 |
case 0x23: case 0x63: case 0x67: /* fmul */ |
2340 |
gen_helper_mul_f64(res, cpu_env, res, src); |
2341 |
break;
|
2342 |
case 0x28: case 0x68: case 0x6c: /* fsub */ |
2343 |
gen_helper_sub_f64(res, cpu_env, res, src); |
2344 |
break;
|
2345 |
case 0x38: /* fcmp */ |
2346 |
gen_helper_sub_cmp_f64(res, cpu_env, res, src); |
2347 |
set_dest = 0;
|
2348 |
round = 0;
|
2349 |
break;
|
2350 |
case 0x3a: /* ftst */ |
2351 |
tcg_gen_mov_f64(res, src); |
2352 |
set_dest = 0;
|
2353 |
round = 0;
|
2354 |
break;
|
2355 |
default:
|
2356 |
goto undef;
|
2357 |
} |
2358 |
if (ext & (1 << 14)) { |
2359 |
tcg_temp_free_i64(src); |
2360 |
} |
2361 |
if (round) {
|
2362 |
if (opmode & 0x40) { |
2363 |
if ((opmode & 0x4) != 0) |
2364 |
round = 0;
|
2365 |
} else if ((s->fpcr & M68K_FPCR_PREC) == 0) { |
2366 |
round = 0;
|
2367 |
} |
2368 |
} |
2369 |
if (round) {
|
2370 |
TCGv tmp = tcg_temp_new_i32(); |
2371 |
gen_helper_f64_to_f32(tmp, cpu_env, res); |
2372 |
gen_helper_f32_to_f64(res, cpu_env, tmp); |
2373 |
tcg_temp_free_i32(tmp); |
2374 |
} |
2375 |
tcg_gen_mov_f64(QREG_FP_RESULT, res); |
2376 |
if (set_dest) {
|
2377 |
tcg_gen_mov_f64(dest, res); |
2378 |
} |
2379 |
tcg_temp_free_i64(res); |
2380 |
return;
|
2381 |
undef:
|
2382 |
/* FIXME: Is this right for offset addressing modes? */
|
2383 |
s->pc -= 2;
|
2384 |
disas_undef_fpu(s, insn); |
2385 |
} |
2386 |
|
2387 |
DISAS_INSN(fbcc) |
2388 |
{ |
2389 |
uint32_t offset; |
2390 |
uint32_t addr; |
2391 |
TCGv flag; |
2392 |
int l1;
|
2393 |
|
2394 |
addr = s->pc; |
2395 |
offset = ldsw_code(s->pc); |
2396 |
s->pc += 2;
|
2397 |
if (insn & (1 << 6)) { |
2398 |
offset = (offset << 16) | lduw_code(s->pc);
|
2399 |
s->pc += 2;
|
2400 |
} |
2401 |
|
2402 |
l1 = gen_new_label(); |
2403 |
/* TODO: Raise BSUN exception. */
|
2404 |
flag = tcg_temp_new(); |
2405 |
gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT); |
2406 |
/* Jump to l1 if condition is true. */
|
2407 |
switch (insn & 0xf) { |
2408 |
case 0: /* f */ |
2409 |
break;
|
2410 |
case 1: /* eq (=0) */ |
2411 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
2412 |
break;
|
2413 |
case 2: /* ogt (=1) */ |
2414 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
|
2415 |
break;
|
2416 |
case 3: /* oge (=0 or =1) */ |
2417 |
tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
|
2418 |
break;
|
2419 |
case 4: /* olt (=-1) */ |
2420 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
|
2421 |
break;
|
2422 |
case 5: /* ole (=-1 or =0) */ |
2423 |
tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
|
2424 |
break;
|
2425 |
case 6: /* ogl (=-1 or =1) */ |
2426 |
tcg_gen_andi_i32(flag, flag, 1);
|
2427 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
2428 |
break;
|
2429 |
case 7: /* or (=2) */ |
2430 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
|
2431 |
break;
|
2432 |
case 8: /* un (<2) */ |
2433 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
|
2434 |
break;
|
2435 |
case 9: /* ueq (=0 or =2) */ |
2436 |
tcg_gen_andi_i32(flag, flag, 1);
|
2437 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
2438 |
break;
|
2439 |
case 10: /* ugt (>0) */ |
2440 |
tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
|
2441 |
break;
|
2442 |
case 11: /* uge (>=0) */ |
2443 |
tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
|
2444 |
break;
|
2445 |
case 12: /* ult (=-1 or =2) */ |
2446 |
tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
|
2447 |
break;
|
2448 |
case 13: /* ule (!=1) */ |
2449 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
|
2450 |
break;
|
2451 |
case 14: /* ne (!=0) */ |
2452 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
2453 |
break;
|
2454 |
case 15: /* t */ |
2455 |
tcg_gen_br(l1); |
2456 |
break;
|
2457 |
} |
2458 |
gen_jmp_tb(s, 0, s->pc);
|
2459 |
gen_set_label(l1); |
2460 |
gen_jmp_tb(s, 1, addr + offset);
|
2461 |
} |
2462 |
|
2463 |
DISAS_INSN(frestore) |
2464 |
{ |
2465 |
/* TODO: Implement frestore. */
|
2466 |
qemu_assert(0, "FRESTORE not implemented"); |
2467 |
} |
2468 |
|
2469 |
DISAS_INSN(fsave) |
2470 |
{ |
2471 |
/* TODO: Implement fsave. */
|
2472 |
qemu_assert(0, "FSAVE not implemented"); |
2473 |
} |
2474 |
|
2475 |
static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper) |
2476 |
{ |
2477 |
TCGv tmp = tcg_temp_new(); |
2478 |
if (s->env->macsr & MACSR_FI) {
|
2479 |
if (upper)
|
2480 |
tcg_gen_andi_i32(tmp, val, 0xffff0000);
|
2481 |
else
|
2482 |
tcg_gen_shli_i32(tmp, val, 16);
|
2483 |
} else if (s->env->macsr & MACSR_SU) { |
2484 |
if (upper)
|
2485 |
tcg_gen_sari_i32(tmp, val, 16);
|
2486 |
else
|
2487 |
tcg_gen_ext16s_i32(tmp, val); |
2488 |
} else {
|
2489 |
if (upper)
|
2490 |
tcg_gen_shri_i32(tmp, val, 16);
|
2491 |
else
|
2492 |
tcg_gen_ext16u_i32(tmp, val); |
2493 |
} |
2494 |
return tmp;
|
2495 |
} |
2496 |
|
2497 |
static void gen_mac_clear_flags(void) |
2498 |
{ |
2499 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, |
2500 |
~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV)); |
2501 |
} |
2502 |
|
2503 |
DISAS_INSN(mac) |
2504 |
{ |
2505 |
TCGv rx; |
2506 |
TCGv ry; |
2507 |
uint16_t ext; |
2508 |
int acc;
|
2509 |
TCGv tmp; |
2510 |
TCGv addr; |
2511 |
TCGv loadval; |
2512 |
int dual;
|
2513 |
TCGv saved_flags; |
2514 |
|
2515 |
if (!s->done_mac) {
|
2516 |
s->mactmp = tcg_temp_new_i64(); |
2517 |
s->done_mac = 1;
|
2518 |
} |
2519 |
|
2520 |
ext = lduw_code(s->pc); |
2521 |
s->pc += 2;
|
2522 |
|
2523 |
acc = ((insn >> 7) & 1) | ((ext >> 3) & 2); |
2524 |
dual = ((insn & 0x30) != 0 && (ext & 3) != 0); |
2525 |
if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
|
2526 |
disas_undef(s, insn); |
2527 |
return;
|
2528 |
} |
2529 |
if (insn & 0x30) { |
2530 |
/* MAC with load. */
|
2531 |
tmp = gen_lea(s, insn, OS_LONG); |
2532 |
addr = tcg_temp_new(); |
2533 |
tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK); |
2534 |
/* Load the value now to ensure correct exception behavior.
|
2535 |
Perform writeback after reading the MAC inputs. */
|
2536 |
loadval = gen_load(s, OS_LONG, addr, 0);
|
2537 |
|
2538 |
acc ^= 1;
|
2539 |
rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12); |
2540 |
ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0); |
2541 |
} else {
|
2542 |
loadval = addr = NULL_QREG; |
2543 |
rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
2544 |
ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2545 |
} |
2546 |
|
2547 |
gen_mac_clear_flags(); |
2548 |
#if 0
|
2549 |
l1 = -1;
|
2550 |
/* Disabled because conditional branches clobber temporary vars. */
|
2551 |
if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
|
2552 |
/* Skip the multiply if we know we will ignore it. */
|
2553 |
l1 = gen_new_label();
|
2554 |
tmp = tcg_temp_new();
|
2555 |
tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
|
2556 |
gen_op_jmp_nz32(tmp, l1);
|
2557 |
}
|
2558 |
#endif
|
2559 |
|
2560 |
if ((ext & 0x0800) == 0) { |
2561 |
/* Word. */
|
2562 |
rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0); |
2563 |
ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0); |
2564 |
} |
2565 |
if (s->env->macsr & MACSR_FI) {
|
2566 |
gen_helper_macmulf(s->mactmp, cpu_env, rx, ry); |
2567 |
} else {
|
2568 |
if (s->env->macsr & MACSR_SU)
|
2569 |
gen_helper_macmuls(s->mactmp, cpu_env, rx, ry); |
2570 |
else
|
2571 |
gen_helper_macmulu(s->mactmp, cpu_env, rx, ry); |
2572 |
switch ((ext >> 9) & 3) { |
2573 |
case 1: |
2574 |
tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
|
2575 |
break;
|
2576 |
case 3: |
2577 |
tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
|
2578 |
break;
|
2579 |
} |
2580 |
} |
2581 |
|
2582 |
if (dual) {
|
2583 |
/* Save the overflow flag from the multiply. */
|
2584 |
saved_flags = tcg_temp_new(); |
2585 |
tcg_gen_mov_i32(saved_flags, QREG_MACSR); |
2586 |
} else {
|
2587 |
saved_flags = NULL_QREG; |
2588 |
} |
2589 |
|
2590 |
#if 0
|
2591 |
/* Disabled because conditional branches clobber temporary vars. */
|
2592 |
if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
|
2593 |
/* Skip the accumulate if the value is already saturated. */
|
2594 |
l1 = gen_new_label();
|
2595 |
tmp = tcg_temp_new();
|
2596 |
gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
|
2597 |
gen_op_jmp_nz32(tmp, l1);
|
2598 |
}
|
2599 |
#endif
|
2600 |
|
2601 |
if (insn & 0x100) |
2602 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2603 |
else
|
2604 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2605 |
|
2606 |
if (s->env->macsr & MACSR_FI)
|
2607 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
2608 |
else if (s->env->macsr & MACSR_SU) |
2609 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
2610 |
else
|
2611 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
2612 |
|
2613 |
#if 0
|
2614 |
/* Disabled because conditional branches clobber temporary vars. */
|
2615 |
if (l1 != -1)
|
2616 |
gen_set_label(l1);
|
2617 |
#endif
|
2618 |
|
2619 |
if (dual) {
|
2620 |
/* Dual accumulate variant. */
|
2621 |
acc = (ext >> 2) & 3; |
2622 |
/* Restore the overflow flag from the multiplier. */
|
2623 |
tcg_gen_mov_i32(QREG_MACSR, saved_flags); |
2624 |
#if 0
|
2625 |
/* Disabled because conditional branches clobber temporary vars. */
|
2626 |
if ((s->env->macsr & MACSR_OMC) != 0) {
|
2627 |
/* Skip the accumulate if the value is already saturated. */
|
2628 |
l1 = gen_new_label();
|
2629 |
tmp = tcg_temp_new();
|
2630 |
gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
|
2631 |
gen_op_jmp_nz32(tmp, l1);
|
2632 |
}
|
2633 |
#endif
|
2634 |
if (ext & 2) |
2635 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2636 |
else
|
2637 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2638 |
if (s->env->macsr & MACSR_FI)
|
2639 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
2640 |
else if (s->env->macsr & MACSR_SU) |
2641 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
2642 |
else
|
2643 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
2644 |
#if 0
|
2645 |
/* Disabled because conditional branches clobber temporary vars. */
|
2646 |
if (l1 != -1)
|
2647 |
gen_set_label(l1);
|
2648 |
#endif
|
2649 |
} |
2650 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc)); |
2651 |
|
2652 |
if (insn & 0x30) { |
2653 |
TCGv rw; |
2654 |
rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
2655 |
tcg_gen_mov_i32(rw, loadval); |
2656 |
/* FIXME: Should address writeback happen with the masked or
|
2657 |
unmasked value? */
|
2658 |
switch ((insn >> 3) & 7) { |
2659 |
case 3: /* Post-increment. */ |
2660 |
tcg_gen_addi_i32(AREG(insn, 0), addr, 4); |
2661 |
break;
|
2662 |
case 4: /* Pre-decrement. */ |
2663 |
tcg_gen_mov_i32(AREG(insn, 0), addr);
|
2664 |
} |
2665 |
} |
2666 |
} |
2667 |
|
2668 |
DISAS_INSN(from_mac) |
2669 |
{ |
2670 |
TCGv rx; |
2671 |
TCGv_i64 acc; |
2672 |
int accnum;
|
2673 |
|
2674 |
rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2675 |
accnum = (insn >> 9) & 3; |
2676 |
acc = MACREG(accnum); |
2677 |
if (s->env->macsr & MACSR_FI) {
|
2678 |
gen_helper_get_macf(rx, cpu_env, acc); |
2679 |
} else if ((s->env->macsr & MACSR_OMC) == 0) { |
2680 |
tcg_gen_trunc_i64_i32(rx, acc); |
2681 |
} else if (s->env->macsr & MACSR_SU) { |
2682 |
gen_helper_get_macs(rx, acc); |
2683 |
} else {
|
2684 |
gen_helper_get_macu(rx, acc); |
2685 |
} |
2686 |
if (insn & 0x40) { |
2687 |
tcg_gen_movi_i64(acc, 0);
|
2688 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
2689 |
} |
2690 |
} |
2691 |
|
2692 |
DISAS_INSN(move_mac) |
2693 |
{ |
2694 |
/* FIXME: This can be done without a helper. */
|
2695 |
int src;
|
2696 |
TCGv dest; |
2697 |
src = insn & 3;
|
2698 |
dest = tcg_const_i32((insn >> 9) & 3); |
2699 |
gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src)); |
2700 |
gen_mac_clear_flags(); |
2701 |
gen_helper_mac_set_flags(cpu_env, dest); |
2702 |
} |
2703 |
|
2704 |
DISAS_INSN(from_macsr) |
2705 |
{ |
2706 |
TCGv reg; |
2707 |
|
2708 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2709 |
tcg_gen_mov_i32(reg, QREG_MACSR); |
2710 |
} |
2711 |
|
2712 |
DISAS_INSN(from_mask) |
2713 |
{ |
2714 |
TCGv reg; |
2715 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2716 |
tcg_gen_mov_i32(reg, QREG_MAC_MASK); |
2717 |
} |
2718 |
|
2719 |
DISAS_INSN(from_mext) |
2720 |
{ |
2721 |
TCGv reg; |
2722 |
TCGv acc; |
2723 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2724 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
2725 |
if (s->env->macsr & MACSR_FI)
|
2726 |
gen_helper_get_mac_extf(reg, cpu_env, acc); |
2727 |
else
|
2728 |
gen_helper_get_mac_exti(reg, cpu_env, acc); |
2729 |
} |
2730 |
|
2731 |
DISAS_INSN(macsr_to_ccr) |
2732 |
{ |
2733 |
tcg_gen_movi_i32(QREG_CC_X, 0);
|
2734 |
tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
|
2735 |
s->cc_op = CC_OP_FLAGS; |
2736 |
} |
2737 |
|
2738 |
DISAS_INSN(to_mac) |
2739 |
{ |
2740 |
TCGv_i64 acc; |
2741 |
TCGv val; |
2742 |
int accnum;
|
2743 |
accnum = (insn >> 9) & 3; |
2744 |
acc = MACREG(accnum); |
2745 |
SRC_EA(val, OS_LONG, 0, NULL); |
2746 |
if (s->env->macsr & MACSR_FI) {
|
2747 |
tcg_gen_ext_i32_i64(acc, val); |
2748 |
tcg_gen_shli_i64(acc, acc, 8);
|
2749 |
} else if (s->env->macsr & MACSR_SU) { |
2750 |
tcg_gen_ext_i32_i64(acc, val); |
2751 |
} else {
|
2752 |
tcg_gen_extu_i32_i64(acc, val); |
2753 |
} |
2754 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
2755 |
gen_mac_clear_flags(); |
2756 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum)); |
2757 |
} |
2758 |
|
2759 |
DISAS_INSN(to_macsr) |
2760 |
{ |
2761 |
TCGv val; |
2762 |
SRC_EA(val, OS_LONG, 0, NULL); |
2763 |
gen_helper_set_macsr(cpu_env, val); |
2764 |
gen_lookup_tb(s); |
2765 |
} |
2766 |
|
2767 |
DISAS_INSN(to_mask) |
2768 |
{ |
2769 |
TCGv val; |
2770 |
SRC_EA(val, OS_LONG, 0, NULL); |
2771 |
tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
|
2772 |
} |
2773 |
|
2774 |
DISAS_INSN(to_mext) |
2775 |
{ |
2776 |
TCGv val; |
2777 |
TCGv acc; |
2778 |
SRC_EA(val, OS_LONG, 0, NULL); |
2779 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
2780 |
if (s->env->macsr & MACSR_FI)
|
2781 |
gen_helper_set_mac_extf(cpu_env, val, acc); |
2782 |
else if (s->env->macsr & MACSR_SU) |
2783 |
gen_helper_set_mac_exts(cpu_env, val, acc); |
2784 |
else
|
2785 |
gen_helper_set_mac_extu(cpu_env, val, acc); |
2786 |
} |
2787 |
|
2788 |
static disas_proc opcode_table[65536]; |
2789 |
|
2790 |
static void |
2791 |
register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask) |
2792 |
{ |
2793 |
int i;
|
2794 |
int from;
|
2795 |
int to;
|
2796 |
|
2797 |
/* Sanity check. All set bits must be included in the mask. */
|
2798 |
if (opcode & ~mask) {
|
2799 |
fprintf(stderr, |
2800 |
"qemu internal error: bogus opcode definition %04x/%04x\n",
|
2801 |
opcode, mask); |
2802 |
abort(); |
2803 |
} |
2804 |
/* This could probably be cleverer. For now just optimize the case where
|
2805 |
the top bits are known. */
|
2806 |
/* Find the first zero bit in the mask. */
|
2807 |
i = 0x8000;
|
2808 |
while ((i & mask) != 0) |
2809 |
i >>= 1;
|
2810 |
/* Iterate over all combinations of this and lower bits. */
|
2811 |
if (i == 0) |
2812 |
i = 1;
|
2813 |
else
|
2814 |
i <<= 1;
|
2815 |
from = opcode & ~(i - 1);
|
2816 |
to = from + i; |
2817 |
for (i = from; i < to; i++) {
|
2818 |
if ((i & mask) == opcode)
|
2819 |
opcode_table[i] = proc; |
2820 |
} |
2821 |
} |
2822 |
|
2823 |
/* Register m68k opcode handlers. Order is important.
|
2824 |
Later insn override earlier ones. */
|
2825 |
void register_m68k_insns (CPUM68KState *env)
|
2826 |
{ |
2827 |
#define INSN(name, opcode, mask, feature) do { \ |
2828 |
if (m68k_feature(env, M68K_FEATURE_##feature)) \ |
2829 |
register_opcode(disas_##name, 0x##opcode, 0x##mask); \ |
2830 |
} while(0) |
2831 |
INSN(undef, 0000, 0000, CF_ISA_A); |
2832 |
INSN(arith_im, 0080, fff8, CF_ISA_A);
|
2833 |
INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
|
2834 |
INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
|
2835 |
INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
|
2836 |
INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
|
2837 |
INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
|
2838 |
INSN(arith_im, 0280, fff8, CF_ISA_A);
|
2839 |
INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
|
2840 |
INSN(arith_im, 0480, fff8, CF_ISA_A);
|
2841 |
INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
|
2842 |
INSN(arith_im, 0680, fff8, CF_ISA_A);
|
2843 |
INSN(bitop_im, 0800, ffc0, CF_ISA_A);
|
2844 |
INSN(bitop_im, 0840, ffc0, CF_ISA_A);
|
2845 |
INSN(bitop_im, 0880, ffc0, CF_ISA_A);
|
2846 |
INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
|
2847 |
INSN(arith_im, 0a80, fff8, CF_ISA_A);
|
2848 |
INSN(arith_im, 0c00, ff38, CF_ISA_A);
|
2849 |
INSN(move, 1000, f000, CF_ISA_A);
|
2850 |
INSN(move, 2000, f000, CF_ISA_A);
|
2851 |
INSN(move, 3000, f000, CF_ISA_A);
|
2852 |
INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC); |
2853 |
INSN(negx, 4080, fff8, CF_ISA_A);
|
2854 |
INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
|
2855 |
INSN(lea, 41c0, f1c0, CF_ISA_A);
|
2856 |
INSN(clr, 4200, ff00, CF_ISA_A);
|
2857 |
INSN(undef, 42c0, ffc0, CF_ISA_A);
|
2858 |
INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
|
2859 |
INSN(neg, 4480, fff8, CF_ISA_A);
|
2860 |
INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
|
2861 |
INSN(not, 4680, fff8, CF_ISA_A);
|
2862 |
INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
|
2863 |
INSN(pea, 4840, ffc0, CF_ISA_A);
|
2864 |
INSN(swap, 4840, fff8, CF_ISA_A);
|
2865 |
INSN(movem, 48c0, fbc0, CF_ISA_A);
|
2866 |
INSN(ext, 4880, fff8, CF_ISA_A);
|
2867 |
INSN(ext, 48c0, fff8, CF_ISA_A);
|
2868 |
INSN(ext, 49c0, fff8, CF_ISA_A);
|
2869 |
INSN(tst, 4a00, ff00, CF_ISA_A);
|
2870 |
INSN(tas, 4ac0, ffc0, CF_ISA_B);
|
2871 |
INSN(halt, 4ac8, ffff, CF_ISA_A);
|
2872 |
INSN(pulse, 4acc, ffff, CF_ISA_A);
|
2873 |
INSN(illegal, 4afc, ffff, CF_ISA_A);
|
2874 |
INSN(mull, 4c00, ffc0, CF_ISA_A);
|
2875 |
INSN(divl, 4c40, ffc0, CF_ISA_A);
|
2876 |
INSN(sats, 4c80, fff8, CF_ISA_B);
|
2877 |
INSN(trap, 4e40, fff0, CF_ISA_A);
|
2878 |
INSN(link, 4e50, fff8, CF_ISA_A);
|
2879 |
INSN(unlk, 4e58, fff8, CF_ISA_A);
|
2880 |
INSN(move_to_usp, 4e60, fff8, USP);
|
2881 |
INSN(move_from_usp, 4e68, fff8, USP);
|
2882 |
INSN(nop, 4e71, ffff, CF_ISA_A);
|
2883 |
INSN(stop, 4e72, ffff, CF_ISA_A);
|
2884 |
INSN(rte, 4e73, ffff, CF_ISA_A);
|
2885 |
INSN(rts, 4e75, ffff, CF_ISA_A);
|
2886 |
INSN(movec, 4e7b, ffff, CF_ISA_A);
|
2887 |
INSN(jump, 4e80, ffc0, CF_ISA_A);
|
2888 |
INSN(jump, 4ec0, ffc0, CF_ISA_A);
|
2889 |
INSN(addsubq, 5180, f1c0, CF_ISA_A);
|
2890 |
INSN(scc, 50c0, f0f8, CF_ISA_A);
|
2891 |
INSN(addsubq, 5080, f1c0, CF_ISA_A);
|
2892 |
INSN(tpf, 51f8, fff8, CF_ISA_A); |
2893 |
|
2894 |
/* Branch instructions. */
|
2895 |
INSN(branch, 6000, f000, CF_ISA_A);
|
2896 |
/* Disable long branch instructions, then add back the ones we want. */
|
2897 |
INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */ |
2898 |
INSN(branch, 60ff, f0ff, CF_ISA_B); |
2899 |
INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */ |
2900 |
INSN(branch, 60ff, ffff, BRAL); |
2901 |
|
2902 |
INSN(moveq, 7000, f100, CF_ISA_A);
|
2903 |
INSN(mvzs, 7100, f100, CF_ISA_B);
|
2904 |
INSN(or, 8000, f000, CF_ISA_A);
|
2905 |
INSN(divw, 80c0, f0c0, CF_ISA_A);
|
2906 |
INSN(addsub, 9000, f000, CF_ISA_A);
|
2907 |
INSN(subx, 9180, f1f8, CF_ISA_A);
|
2908 |
INSN(suba, 91c0, f1c0, CF_ISA_A);
|
2909 |
|
2910 |
INSN(undef_mac, a000, f000, CF_ISA_A); |
2911 |
INSN(mac, a000, f100, CF_EMAC); |
2912 |
INSN(from_mac, a180, f9b0, CF_EMAC); |
2913 |
INSN(move_mac, a110, f9fc, CF_EMAC); |
2914 |
INSN(from_macsr,a980, f9f0, CF_EMAC); |
2915 |
INSN(from_mask, ad80, fff0, CF_EMAC); |
2916 |
INSN(from_mext, ab80, fbf0, CF_EMAC); |
2917 |
INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC); |
2918 |
INSN(to_mac, a100, f9c0, CF_EMAC); |
2919 |
INSN(to_macsr, a900, ffc0, CF_EMAC); |
2920 |
INSN(to_mext, ab00, fbc0, CF_EMAC); |
2921 |
INSN(to_mask, ad00, ffc0, CF_EMAC); |
2922 |
|
2923 |
INSN(mov3q, a140, f1c0, CF_ISA_B); |
2924 |
INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
|
2925 |
INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
|
2926 |
INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
|
2927 |
INSN(cmp, b080, f1c0, CF_ISA_A); |
2928 |
INSN(cmpa, b1c0, f1c0, CF_ISA_A); |
2929 |
INSN(eor, b180, f1c0, CF_ISA_A); |
2930 |
INSN(and, c000, f000, CF_ISA_A); |
2931 |
INSN(mulw, c0c0, f0c0, CF_ISA_A); |
2932 |
INSN(addsub, d000, f000, CF_ISA_A); |
2933 |
INSN(addx, d180, f1f8, CF_ISA_A); |
2934 |
INSN(adda, d1c0, f1c0, CF_ISA_A); |
2935 |
INSN(shift_im, e080, f0f0, CF_ISA_A); |
2936 |
INSN(shift_reg, e0a0, f0f0, CF_ISA_A); |
2937 |
INSN(undef_fpu, f000, f000, CF_ISA_A); |
2938 |
INSN(fpu, f200, ffc0, CF_FPU); |
2939 |
INSN(fbcc, f280, ffc0, CF_FPU); |
2940 |
INSN(frestore, f340, ffc0, CF_FPU); |
2941 |
INSN(fsave, f340, ffc0, CF_FPU); |
2942 |
INSN(intouch, f340, ffc0, CF_ISA_A); |
2943 |
INSN(cpushl, f428, ff38, CF_ISA_A); |
2944 |
INSN(wddata, fb00, ff00, CF_ISA_A); |
2945 |
INSN(wdebug, fbc0, ffc0, CF_ISA_A); |
2946 |
#undef INSN
|
2947 |
} |
2948 |
|
2949 |
/* ??? Some of this implementation is not exception safe. We should always
|
2950 |
write back the result to memory before setting the condition codes. */
|
2951 |
static void disas_m68k_insn(CPUState * env, DisasContext *s) |
2952 |
{ |
2953 |
uint16_t insn; |
2954 |
|
2955 |
insn = lduw_code(s->pc); |
2956 |
s->pc += 2;
|
2957 |
|
2958 |
opcode_table[insn](s, insn); |
2959 |
} |
2960 |
|
2961 |
/* generate intermediate code for basic block 'tb'. */
|
2962 |
static inline void |
2963 |
gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, |
2964 |
int search_pc)
|
2965 |
{ |
2966 |
DisasContext dc1, *dc = &dc1; |
2967 |
uint16_t *gen_opc_end; |
2968 |
CPUBreakpoint *bp; |
2969 |
int j, lj;
|
2970 |
target_ulong pc_start; |
2971 |
int pc_offset;
|
2972 |
int last_cc_op;
|
2973 |
int num_insns;
|
2974 |
int max_insns;
|
2975 |
|
2976 |
/* generate intermediate code */
|
2977 |
pc_start = tb->pc; |
2978 |
|
2979 |
dc->tb = tb; |
2980 |
|
2981 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
2982 |
|
2983 |
dc->env = env; |
2984 |
dc->is_jmp = DISAS_NEXT; |
2985 |
dc->pc = pc_start; |
2986 |
dc->cc_op = CC_OP_DYNAMIC; |
2987 |
dc->singlestep_enabled = env->singlestep_enabled; |
2988 |
dc->fpcr = env->fpcr; |
2989 |
dc->user = (env->sr & SR_S) == 0;
|
2990 |
dc->is_mem = 0;
|
2991 |
dc->done_mac = 0;
|
2992 |
lj = -1;
|
2993 |
num_insns = 0;
|
2994 |
max_insns = tb->cflags & CF_COUNT_MASK; |
2995 |
if (max_insns == 0) |
2996 |
max_insns = CF_COUNT_MASK; |
2997 |
|
2998 |
gen_icount_start(); |
2999 |
do {
|
3000 |
pc_offset = dc->pc - pc_start; |
3001 |
gen_throws_exception = NULL;
|
3002 |
if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
|
3003 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
3004 |
if (bp->pc == dc->pc) {
|
3005 |
gen_exception(dc, dc->pc, EXCP_DEBUG); |
3006 |
dc->is_jmp = DISAS_JUMP; |
3007 |
break;
|
3008 |
} |
3009 |
} |
3010 |
if (dc->is_jmp)
|
3011 |
break;
|
3012 |
} |
3013 |
if (search_pc) {
|
3014 |
j = gen_opc_ptr - gen_opc_buf; |
3015 |
if (lj < j) {
|
3016 |
lj++; |
3017 |
while (lj < j)
|
3018 |
gen_opc_instr_start[lj++] = 0;
|
3019 |
} |
3020 |
gen_opc_pc[lj] = dc->pc; |
3021 |
gen_opc_instr_start[lj] = 1;
|
3022 |
gen_opc_icount[lj] = num_insns; |
3023 |
} |
3024 |
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) |
3025 |
gen_io_start(); |
3026 |
last_cc_op = dc->cc_op; |
3027 |
dc->insn_pc = dc->pc; |
3028 |
disas_m68k_insn(env, dc); |
3029 |
num_insns++; |
3030 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
|
3031 |
!env->singlestep_enabled && |
3032 |
!singlestep && |
3033 |
(pc_offset) < (TARGET_PAGE_SIZE - 32) &&
|
3034 |
num_insns < max_insns); |
3035 |
|
3036 |
if (tb->cflags & CF_LAST_IO)
|
3037 |
gen_io_end(); |
3038 |
if (unlikely(env->singlestep_enabled)) {
|
3039 |
/* Make sure the pc is updated, and raise a debug exception. */
|
3040 |
if (!dc->is_jmp) {
|
3041 |
gen_flush_cc_op(dc); |
3042 |
tcg_gen_movi_i32(QREG_PC, dc->pc); |
3043 |
} |
3044 |
gen_helper_raise_exception(tcg_const_i32(EXCP_DEBUG)); |
3045 |
} else {
|
3046 |
switch(dc->is_jmp) {
|
3047 |
case DISAS_NEXT:
|
3048 |
gen_flush_cc_op(dc); |
3049 |
gen_jmp_tb(dc, 0, dc->pc);
|
3050 |
break;
|
3051 |
default:
|
3052 |
case DISAS_JUMP:
|
3053 |
case DISAS_UPDATE:
|
3054 |
gen_flush_cc_op(dc); |
3055 |
/* indicate that the hash table must be used to find the next TB */
|
3056 |
tcg_gen_exit_tb(0);
|
3057 |
break;
|
3058 |
case DISAS_TB_JUMP:
|
3059 |
/* nothing more to generate */
|
3060 |
break;
|
3061 |
} |
3062 |
} |
3063 |
gen_icount_end(tb, num_insns); |
3064 |
*gen_opc_ptr = INDEX_op_end; |
3065 |
|
3066 |
#ifdef DEBUG_DISAS
|
3067 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
3068 |
qemu_log("----------------\n");
|
3069 |
qemu_log("IN: %s\n", lookup_symbol(pc_start));
|
3070 |
log_target_disas(pc_start, dc->pc - pc_start, 0);
|
3071 |
qemu_log("\n");
|
3072 |
} |
3073 |
#endif
|
3074 |
if (search_pc) {
|
3075 |
j = gen_opc_ptr - gen_opc_buf; |
3076 |
lj++; |
3077 |
while (lj <= j)
|
3078 |
gen_opc_instr_start[lj++] = 0;
|
3079 |
} else {
|
3080 |
tb->size = dc->pc - pc_start; |
3081 |
tb->icount = num_insns; |
3082 |
} |
3083 |
|
3084 |
//optimize_flags();
|
3085 |
//expand_target_qops();
|
3086 |
} |
3087 |
|
3088 |
void gen_intermediate_code(CPUState *env, TranslationBlock *tb)
|
3089 |
{ |
3090 |
gen_intermediate_code_internal(env, tb, 0);
|
3091 |
} |
3092 |
|
3093 |
void gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
|
3094 |
{ |
3095 |
gen_intermediate_code_internal(env, tb, 1);
|
3096 |
} |
3097 |
|
3098 |
void cpu_dump_state(CPUState *env, FILE *f,
|
3099 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
3100 |
int flags)
|
3101 |
{ |
3102 |
int i;
|
3103 |
uint16_t sr; |
3104 |
CPU_DoubleU u; |
3105 |
for (i = 0; i < 8; i++) |
3106 |
{ |
3107 |
u.d = env->fregs[i]; |
3108 |
cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
|
3109 |
i, env->dregs[i], i, env->aregs[i], |
3110 |
i, u.l.upper, u.l.lower, *(double *)&u.d);
|
3111 |
} |
3112 |
cpu_fprintf (f, "PC = %08x ", env->pc);
|
3113 |
sr = env->sr; |
3114 |
cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-', |
3115 |
(sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-', |
3116 |
(sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-'); |
3117 |
cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result); |
3118 |
} |
3119 |
|
3120 |
void gen_pc_load(CPUState *env, TranslationBlock *tb,
|
3121 |
unsigned long searched_pc, int pc_pos, void *puc) |
3122 |
{ |
3123 |
env->pc = gen_opc_pc[pc_pos]; |
3124 |
} |