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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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 <assert.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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#define GEN_HELPER 1 |
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#include "helpers.h" |
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//#define DEBUG_DISPATCH 1
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#define DEFO32(name, offset) static TCGv QREG_##name; |
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#define DEFO64(name, offset) static TCGv QREG_##name; |
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#define DEFF64(name, offset) static TCGv 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 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 cpu_fregs[8]; |
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static TCGv cpu_macc[4]; |
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|
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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) (GET_TCGV(t) == GET_TCGV(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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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(TCG_TYPE_I32, TCG_AREG0, offsetof(CPUState, offset), #name); |
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#define DEFO64(name, offset) QREG_##name = tcg_global_mem_new(TCG_TYPE_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(TCG_TYPE_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_TYPE_I32, 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_TYPE_I32, 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(TCG_TYPE_I32, 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(TCG_TYPE_I32, 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_TYPE_I32, TCG_AREG0, -4, "NULL"); |
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store_dummy = tcg_global_mem_new(TCG_TYPE_I32, TCG_AREG0, -8, "NULL"); |
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#define DEF_HELPER(name, ret, args) \
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tcg_register_helper(HELPER(name), #name);
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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 mactmp; |
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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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extern FILE *logfile;
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extern int loglevel; |
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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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if (logfile) fprintf(logfile, "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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/* Fake floating point. */
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#define TCG_TYPE_F32 TCG_TYPE_I32
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#define TCG_TYPE_F64 TCG_TYPE_I64
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#define tcg_gen_mov_f64 tcg_gen_mov_i64
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#define tcg_gen_qemu_ldf32 tcg_gen_qemu_ld32u
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#define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
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#define tcg_gen_qemu_stf32 tcg_gen_qemu_st32
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#define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
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#define gen_helper_pack_32_f32 tcg_gen_mov_i32
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#define gen_helper_pack_f32_32 tcg_gen_mov_i32
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#define QMODE_I32 TCG_TYPE_I32
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#define QMODE_I64 TCG_TYPE_I64
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#define QMODE_F32 TCG_TYPE_F32
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#define QMODE_F64 TCG_TYPE_F64
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static inline TCGv gen_new_qreg(int mode) |
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{ |
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return tcg_temp_new(mode);
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} |
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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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switch(opsize) {
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case OS_BYTE:
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tmp = gen_new_qreg(QMODE_I32); |
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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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tmp = gen_new_qreg(QMODE_I32); |
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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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tmp = gen_new_qreg(QMODE_I32); |
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tcg_gen_qemu_ld32u(tmp, addr, index); |
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break;
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case OS_SINGLE:
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tmp = gen_new_qreg(QMODE_F32); |
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tcg_gen_qemu_ldf32(tmp, addr, index); |
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break;
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case OS_DOUBLE:
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tmp = gen_new_qreg(QMODE_F64); |
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tcg_gen_qemu_ldf64(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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/* 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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tcg_gen_qemu_st32(val, addr, index); |
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break;
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case OS_SINGLE:
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tcg_gen_qemu_stf32(val, addr, index); |
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break;
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case OS_DOUBLE:
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tcg_gen_qemu_stf64(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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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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} |
278 |
} |
279 |
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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); |
287 |
s->pc += 2;
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return im;
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} |
290 |
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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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296 |
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add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12); |
298 |
if ((ext & 0x800) == 0) { |
299 |
tcg_gen_ext16s_i32(tmp, add); |
300 |
add = tmp; |
301 |
} |
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scale = (ext >> 9) & 3; |
303 |
if (scale != 0) { |
304 |
tcg_gen_shli_i32(tmp, add, scale); |
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add = tmp; |
306 |
} |
307 |
return add;
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} |
309 |
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310 |
/* 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) |
313 |
{ |
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uint32_t offset; |
315 |
uint16_t ext; |
316 |
TCGv add; |
317 |
TCGv tmp; |
318 |
uint32_t bd, od; |
319 |
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offset = s->pc; |
321 |
ext = lduw_code(s->pc); |
322 |
s->pc += 2;
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323 |
|
324 |
if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX)) |
325 |
return NULL_QREG;
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326 |
|
327 |
if (ext & 0x100) { |
328 |
/* full extension word format */
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329 |
if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
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330 |
return NULL_QREG;
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331 |
|
332 |
if ((ext & 0x30) > 0x10) { |
333 |
/* base displacement */
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334 |
if ((ext & 0x30) == 0x20) { |
335 |
bd = (int16_t)lduw_code(s->pc); |
336 |
s->pc += 2;
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337 |
} else {
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338 |
bd = read_im32(s); |
339 |
} |
340 |
} else {
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341 |
bd = 0;
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342 |
} |
343 |
tmp = gen_new_qreg(QMODE_I32); |
344 |
if ((ext & 0x44) == 0) { |
345 |
/* pre-index */
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346 |
add = gen_addr_index(ext, tmp); |
347 |
} else {
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348 |
add = NULL_QREG; |
349 |
} |
350 |
if ((ext & 0x80) == 0) { |
351 |
/* base not suppressed */
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352 |
if (IS_NULL_QREG(base)) {
|
353 |
base = gen_im32(offset + bd); |
354 |
bd = 0;
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355 |
} |
356 |
if (!IS_NULL_QREG(add)) {
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357 |
tcg_gen_add_i32(tmp, add, base); |
358 |
add = tmp; |
359 |
} else {
|
360 |
add = base; |
361 |
} |
362 |
} |
363 |
if (!IS_NULL_QREG(add)) {
|
364 |
if (bd != 0) { |
365 |
tcg_gen_addi_i32(tmp, add, bd); |
366 |
add = tmp; |
367 |
} |
368 |
} else {
|
369 |
add = gen_im32(bd); |
370 |
} |
371 |
if ((ext & 3) != 0) { |
372 |
/* memory indirect */
|
373 |
base = gen_load(s, OS_LONG, add, 0);
|
374 |
if ((ext & 0x44) == 4) { |
375 |
add = gen_addr_index(ext, tmp); |
376 |
tcg_gen_add_i32(tmp, add, base); |
377 |
add = tmp; |
378 |
} else {
|
379 |
add = base; |
380 |
} |
381 |
if ((ext & 3) > 1) { |
382 |
/* outer displacement */
|
383 |
if ((ext & 3) == 2) { |
384 |
od = (int16_t)lduw_code(s->pc); |
385 |
s->pc += 2;
|
386 |
} else {
|
387 |
od = read_im32(s); |
388 |
} |
389 |
} else {
|
390 |
od = 0;
|
391 |
} |
392 |
if (od != 0) { |
393 |
tcg_gen_addi_i32(tmp, add, od); |
394 |
add = tmp; |
395 |
} |
396 |
} |
397 |
} else {
|
398 |
/* brief extension word format */
|
399 |
tmp = gen_new_qreg(QMODE_I32); |
400 |
add = gen_addr_index(ext, tmp); |
401 |
if (!IS_NULL_QREG(base)) {
|
402 |
tcg_gen_add_i32(tmp, add, base); |
403 |
if ((int8_t)ext)
|
404 |
tcg_gen_addi_i32(tmp, tmp, (int8_t)ext); |
405 |
} else {
|
406 |
tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext); |
407 |
} |
408 |
add = tmp; |
409 |
} |
410 |
return add;
|
411 |
} |
412 |
|
413 |
/* Update the CPU env CC_OP state. */
|
414 |
static inline void gen_flush_cc_op(DisasContext *s) |
415 |
{ |
416 |
if (s->cc_op != CC_OP_DYNAMIC)
|
417 |
tcg_gen_movi_i32(QREG_CC_OP, s->cc_op); |
418 |
} |
419 |
|
420 |
/* Evaluate all the CC flags. */
|
421 |
static inline void gen_flush_flags(DisasContext *s) |
422 |
{ |
423 |
if (s->cc_op == CC_OP_FLAGS)
|
424 |
return;
|
425 |
gen_flush_cc_op(s); |
426 |
gen_helper_flush_flags(cpu_env, QREG_CC_OP); |
427 |
s->cc_op = CC_OP_FLAGS; |
428 |
} |
429 |
|
430 |
static void gen_logic_cc(DisasContext *s, TCGv val) |
431 |
{ |
432 |
tcg_gen_mov_i32(QREG_CC_DEST, val); |
433 |
s->cc_op = CC_OP_LOGIC; |
434 |
} |
435 |
|
436 |
static void gen_update_cc_add(TCGv dest, TCGv src) |
437 |
{ |
438 |
tcg_gen_mov_i32(QREG_CC_DEST, dest); |
439 |
tcg_gen_mov_i32(QREG_CC_SRC, src); |
440 |
} |
441 |
|
442 |
static inline int opsize_bytes(int opsize) |
443 |
{ |
444 |
switch (opsize) {
|
445 |
case OS_BYTE: return 1; |
446 |
case OS_WORD: return 2; |
447 |
case OS_LONG: return 4; |
448 |
case OS_SINGLE: return 4; |
449 |
case OS_DOUBLE: return 8; |
450 |
default:
|
451 |
qemu_assert(0, "bad operand size"); |
452 |
} |
453 |
} |
454 |
|
455 |
/* Assign value to a register. If the width is less than the register width
|
456 |
only the low part of the register is set. */
|
457 |
static void gen_partset_reg(int opsize, TCGv reg, TCGv val) |
458 |
{ |
459 |
TCGv tmp; |
460 |
switch (opsize) {
|
461 |
case OS_BYTE:
|
462 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
463 |
tmp = gen_new_qreg(QMODE_I32); |
464 |
tcg_gen_ext8u_i32(tmp, val); |
465 |
tcg_gen_or_i32(reg, reg, tmp); |
466 |
break;
|
467 |
case OS_WORD:
|
468 |
tcg_gen_andi_i32(reg, reg, 0xffff0000);
|
469 |
tmp = gen_new_qreg(QMODE_I32); |
470 |
tcg_gen_ext16u_i32(tmp, val); |
471 |
tcg_gen_or_i32(reg, reg, tmp); |
472 |
break;
|
473 |
case OS_LONG:
|
474 |
tcg_gen_mov_i32(reg, val); |
475 |
break;
|
476 |
case OS_SINGLE:
|
477 |
gen_helper_pack_32_f32(reg, val); |
478 |
break;
|
479 |
default:
|
480 |
qemu_assert(0, "Bad operand size"); |
481 |
break;
|
482 |
} |
483 |
} |
484 |
|
485 |
/* Sign or zero extend a value. */
|
486 |
static inline TCGv gen_extend(TCGv val, int opsize, int sign) |
487 |
{ |
488 |
TCGv tmp; |
489 |
|
490 |
switch (opsize) {
|
491 |
case OS_BYTE:
|
492 |
tmp = gen_new_qreg(QMODE_I32); |
493 |
if (sign)
|
494 |
tcg_gen_ext8s_i32(tmp, val); |
495 |
else
|
496 |
tcg_gen_ext8u_i32(tmp, val); |
497 |
break;
|
498 |
case OS_WORD:
|
499 |
tmp = gen_new_qreg(QMODE_I32); |
500 |
if (sign)
|
501 |
tcg_gen_ext16s_i32(tmp, val); |
502 |
else
|
503 |
tcg_gen_ext16u_i32(tmp, val); |
504 |
break;
|
505 |
case OS_LONG:
|
506 |
tmp = val; |
507 |
break;
|
508 |
case OS_SINGLE:
|
509 |
tmp = gen_new_qreg(QMODE_F32); |
510 |
gen_helper_pack_f32_32(tmp, val); |
511 |
break;
|
512 |
default:
|
513 |
qemu_assert(0, "Bad operand size"); |
514 |
} |
515 |
return tmp;
|
516 |
} |
517 |
|
518 |
/* Generate code for an "effective address". Does not adjust the base
|
519 |
register for autoincrememnt addressing modes. */
|
520 |
static TCGv gen_lea(DisasContext *s, uint16_t insn, int opsize) |
521 |
{ |
522 |
TCGv reg; |
523 |
TCGv tmp; |
524 |
uint16_t ext; |
525 |
uint32_t offset; |
526 |
|
527 |
switch ((insn >> 3) & 7) { |
528 |
case 0: /* Data register direct. */ |
529 |
case 1: /* Address register direct. */ |
530 |
return NULL_QREG;
|
531 |
case 2: /* Indirect register */ |
532 |
case 3: /* Indirect postincrement. */ |
533 |
return AREG(insn, 0); |
534 |
case 4: /* Indirect predecrememnt. */ |
535 |
reg = AREG(insn, 0);
|
536 |
tmp = gen_new_qreg(QMODE_I32); |
537 |
tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize)); |
538 |
return tmp;
|
539 |
case 5: /* Indirect displacement. */ |
540 |
reg = AREG(insn, 0);
|
541 |
tmp = gen_new_qreg(QMODE_I32); |
542 |
ext = lduw_code(s->pc); |
543 |
s->pc += 2;
|
544 |
tcg_gen_addi_i32(tmp, reg, (int16_t)ext); |
545 |
return tmp;
|
546 |
case 6: /* Indirect index + displacement. */ |
547 |
reg = AREG(insn, 0);
|
548 |
return gen_lea_indexed(s, opsize, reg);
|
549 |
case 7: /* Other */ |
550 |
switch (insn & 7) { |
551 |
case 0: /* Absolute short. */ |
552 |
offset = ldsw_code(s->pc); |
553 |
s->pc += 2;
|
554 |
return gen_im32(offset);
|
555 |
case 1: /* Absolute long. */ |
556 |
offset = read_im32(s); |
557 |
return gen_im32(offset);
|
558 |
case 2: /* pc displacement */ |
559 |
tmp = gen_new_qreg(QMODE_I32); |
560 |
offset = s->pc; |
561 |
offset += ldsw_code(s->pc); |
562 |
s->pc += 2;
|
563 |
return gen_im32(offset);
|
564 |
case 3: /* pc index+displacement. */ |
565 |
return gen_lea_indexed(s, opsize, NULL_QREG);
|
566 |
case 4: /* Immediate. */ |
567 |
default:
|
568 |
return NULL_QREG;
|
569 |
} |
570 |
} |
571 |
/* Should never happen. */
|
572 |
return NULL_QREG;
|
573 |
} |
574 |
|
575 |
/* Helper function for gen_ea. Reuse the computed address between the
|
576 |
for read/write operands. */
|
577 |
static inline TCGv gen_ea_once(DisasContext *s, uint16_t insn, int opsize, |
578 |
TCGv val, TCGv *addrp, ea_what what) |
579 |
{ |
580 |
TCGv tmp; |
581 |
|
582 |
if (addrp && what == EA_STORE) {
|
583 |
tmp = *addrp; |
584 |
} else {
|
585 |
tmp = gen_lea(s, insn, opsize); |
586 |
if (IS_NULL_QREG(tmp))
|
587 |
return tmp;
|
588 |
if (addrp)
|
589 |
*addrp = tmp; |
590 |
} |
591 |
return gen_ldst(s, opsize, tmp, val, what);
|
592 |
} |
593 |
|
594 |
/* Generate code to load/store a value ito/from an EA. If VAL > 0 this is
|
595 |
a write otherwise it is a read (0 == sign extend, -1 == zero extend).
|
596 |
ADDRP is non-null for readwrite operands. */
|
597 |
static TCGv gen_ea(DisasContext *s, uint16_t insn, int opsize, TCGv val, |
598 |
TCGv *addrp, ea_what what) |
599 |
{ |
600 |
TCGv reg; |
601 |
TCGv result; |
602 |
uint32_t offset; |
603 |
|
604 |
switch ((insn >> 3) & 7) { |
605 |
case 0: /* Data register direct. */ |
606 |
reg = DREG(insn, 0);
|
607 |
if (what == EA_STORE) {
|
608 |
gen_partset_reg(opsize, reg, val); |
609 |
return store_dummy;
|
610 |
} else {
|
611 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
612 |
} |
613 |
case 1: /* Address register direct. */ |
614 |
reg = AREG(insn, 0);
|
615 |
if (what == EA_STORE) {
|
616 |
tcg_gen_mov_i32(reg, val); |
617 |
return store_dummy;
|
618 |
} else {
|
619 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
620 |
} |
621 |
case 2: /* Indirect register */ |
622 |
reg = AREG(insn, 0);
|
623 |
return gen_ldst(s, opsize, reg, val, what);
|
624 |
case 3: /* Indirect postincrement. */ |
625 |
reg = AREG(insn, 0);
|
626 |
result = gen_ldst(s, opsize, reg, val, what); |
627 |
/* ??? This is not exception safe. The instruction may still
|
628 |
fault after this point. */
|
629 |
if (what == EA_STORE || !addrp)
|
630 |
tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize)); |
631 |
return result;
|
632 |
case 4: /* Indirect predecrememnt. */ |
633 |
{ |
634 |
TCGv tmp; |
635 |
if (addrp && what == EA_STORE) {
|
636 |
tmp = *addrp; |
637 |
} else {
|
638 |
tmp = gen_lea(s, insn, opsize); |
639 |
if (IS_NULL_QREG(tmp))
|
640 |
return tmp;
|
641 |
if (addrp)
|
642 |
*addrp = tmp; |
643 |
} |
644 |
result = gen_ldst(s, opsize, tmp, val, what); |
645 |
/* ??? This is not exception safe. The instruction may still
|
646 |
fault after this point. */
|
647 |
if (what == EA_STORE || !addrp) {
|
648 |
reg = AREG(insn, 0);
|
649 |
tcg_gen_mov_i32(reg, tmp); |
650 |
} |
651 |
} |
652 |
return result;
|
653 |
case 5: /* Indirect displacement. */ |
654 |
case 6: /* Indirect index + displacement. */ |
655 |
return gen_ea_once(s, insn, opsize, val, addrp, what);
|
656 |
case 7: /* Other */ |
657 |
switch (insn & 7) { |
658 |
case 0: /* Absolute short. */ |
659 |
case 1: /* Absolute long. */ |
660 |
case 2: /* pc displacement */ |
661 |
case 3: /* pc index+displacement. */ |
662 |
return gen_ea_once(s, insn, opsize, val, addrp, what);
|
663 |
case 4: /* Immediate. */ |
664 |
/* Sign extend values for consistency. */
|
665 |
switch (opsize) {
|
666 |
case OS_BYTE:
|
667 |
if (what == EA_LOADS)
|
668 |
offset = ldsb_code(s->pc + 1);
|
669 |
else
|
670 |
offset = ldub_code(s->pc + 1);
|
671 |
s->pc += 2;
|
672 |
break;
|
673 |
case OS_WORD:
|
674 |
if (what == EA_LOADS)
|
675 |
offset = ldsw_code(s->pc); |
676 |
else
|
677 |
offset = lduw_code(s->pc); |
678 |
s->pc += 2;
|
679 |
break;
|
680 |
case OS_LONG:
|
681 |
offset = read_im32(s); |
682 |
break;
|
683 |
default:
|
684 |
qemu_assert(0, "Bad immediate operand"); |
685 |
} |
686 |
return tcg_const_i32(offset);
|
687 |
default:
|
688 |
return NULL_QREG;
|
689 |
} |
690 |
} |
691 |
/* Should never happen. */
|
692 |
return NULL_QREG;
|
693 |
} |
694 |
|
695 |
/* This generates a conditional branch, clobbering all temporaries. */
|
696 |
static void gen_jmpcc(DisasContext *s, int cond, int l1) |
697 |
{ |
698 |
TCGv tmp; |
699 |
|
700 |
/* TODO: Optimize compare/branch pairs rather than always flushing
|
701 |
flag state to CC_OP_FLAGS. */
|
702 |
gen_flush_flags(s); |
703 |
switch (cond) {
|
704 |
case 0: /* T */ |
705 |
tcg_gen_br(l1); |
706 |
break;
|
707 |
case 1: /* F */ |
708 |
break;
|
709 |
case 2: /* HI (!C && !Z) */ |
710 |
tmp = gen_new_qreg(QMODE_I32); |
711 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
712 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
713 |
break;
|
714 |
case 3: /* LS (C || Z) */ |
715 |
tmp = gen_new_qreg(QMODE_I32); |
716 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
717 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
718 |
break;
|
719 |
case 4: /* CC (!C) */ |
720 |
tmp = gen_new_qreg(QMODE_I32); |
721 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
722 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
723 |
break;
|
724 |
case 5: /* CS (C) */ |
725 |
tmp = gen_new_qreg(QMODE_I32); |
726 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
727 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
728 |
break;
|
729 |
case 6: /* NE (!Z) */ |
730 |
tmp = gen_new_qreg(QMODE_I32); |
731 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
732 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
733 |
break;
|
734 |
case 7: /* EQ (Z) */ |
735 |
tmp = gen_new_qreg(QMODE_I32); |
736 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
737 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
738 |
break;
|
739 |
case 8: /* VC (!V) */ |
740 |
tmp = gen_new_qreg(QMODE_I32); |
741 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
742 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
743 |
break;
|
744 |
case 9: /* VS (V) */ |
745 |
tmp = gen_new_qreg(QMODE_I32); |
746 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
747 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
748 |
break;
|
749 |
case 10: /* PL (!N) */ |
750 |
tmp = gen_new_qreg(QMODE_I32); |
751 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
752 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
753 |
break;
|
754 |
case 11: /* MI (N) */ |
755 |
tmp = gen_new_qreg(QMODE_I32); |
756 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
757 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
758 |
break;
|
759 |
case 12: /* GE (!(N ^ V)) */ |
760 |
tmp = gen_new_qreg(QMODE_I32); |
761 |
assert(CCF_V == (CCF_N >> 2));
|
762 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
763 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
764 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
765 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
766 |
break;
|
767 |
case 13: /* LT (N ^ V) */ |
768 |
tmp = gen_new_qreg(QMODE_I32); |
769 |
assert(CCF_V == (CCF_N >> 2));
|
770 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
771 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
772 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
773 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
774 |
break;
|
775 |
case 14: /* GT (!(Z || (N ^ V))) */ |
776 |
tmp = gen_new_qreg(QMODE_I32); |
777 |
assert(CCF_V == (CCF_N >> 2));
|
778 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
779 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
780 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
781 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
782 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
783 |
break;
|
784 |
case 15: /* LE (Z || (N ^ V)) */ |
785 |
tmp = gen_new_qreg(QMODE_I32); |
786 |
assert(CCF_V == (CCF_N >> 2));
|
787 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
788 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
789 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
790 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
791 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
792 |
break;
|
793 |
default:
|
794 |
/* Should ever happen. */
|
795 |
abort(); |
796 |
} |
797 |
} |
798 |
|
799 |
DISAS_INSN(scc) |
800 |
{ |
801 |
int l1;
|
802 |
int cond;
|
803 |
TCGv reg; |
804 |
|
805 |
l1 = gen_new_label(); |
806 |
cond = (insn >> 8) & 0xf; |
807 |
reg = DREG(insn, 0);
|
808 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
809 |
/* This is safe because we modify the reg directly, with no other values
|
810 |
live. */
|
811 |
gen_jmpcc(s, cond ^ 1, l1);
|
812 |
tcg_gen_ori_i32(reg, reg, 0xff);
|
813 |
gen_set_label(l1); |
814 |
} |
815 |
|
816 |
/* Force a TB lookup after an instruction that changes the CPU state. */
|
817 |
static void gen_lookup_tb(DisasContext *s) |
818 |
{ |
819 |
gen_flush_cc_op(s); |
820 |
tcg_gen_movi_i32(QREG_PC, s->pc); |
821 |
s->is_jmp = DISAS_UPDATE; |
822 |
} |
823 |
|
824 |
/* Generate a jump to an immediate address. */
|
825 |
static void gen_jmp_im(DisasContext *s, uint32_t dest) |
826 |
{ |
827 |
gen_flush_cc_op(s); |
828 |
tcg_gen_movi_i32(QREG_PC, dest); |
829 |
s->is_jmp = DISAS_JUMP; |
830 |
} |
831 |
|
832 |
/* Generate a jump to the address in qreg DEST. */
|
833 |
static void gen_jmp(DisasContext *s, TCGv dest) |
834 |
{ |
835 |
gen_flush_cc_op(s); |
836 |
tcg_gen_mov_i32(QREG_PC, dest); |
837 |
s->is_jmp = DISAS_JUMP; |
838 |
} |
839 |
|
840 |
static void gen_exception(DisasContext *s, uint32_t where, int nr) |
841 |
{ |
842 |
gen_flush_cc_op(s); |
843 |
gen_jmp_im(s, where); |
844 |
gen_helper_raise_exception(tcg_const_i32(nr)); |
845 |
} |
846 |
|
847 |
static inline void gen_addr_fault(DisasContext *s) |
848 |
{ |
849 |
gen_exception(s, s->insn_pc, EXCP_ADDRESS); |
850 |
} |
851 |
|
852 |
#define SRC_EA(result, opsize, op_sign, addrp) do { \ |
853 |
result = gen_ea(s, insn, opsize, NULL_QREG, addrp, op_sign ? EA_LOADS : EA_LOADU); \ |
854 |
if (IS_NULL_QREG(result)) { \
|
855 |
gen_addr_fault(s); \ |
856 |
return; \
|
857 |
} \ |
858 |
} while (0) |
859 |
|
860 |
#define DEST_EA(insn, opsize, val, addrp) do { \ |
861 |
TCGv ea_result = gen_ea(s, insn, opsize, val, addrp, EA_STORE); \ |
862 |
if (IS_NULL_QREG(ea_result)) { \
|
863 |
gen_addr_fault(s); \ |
864 |
return; \
|
865 |
} \ |
866 |
} while (0) |
867 |
|
868 |
/* Generate a jump to an immediate address. */
|
869 |
static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest) |
870 |
{ |
871 |
TranslationBlock *tb; |
872 |
|
873 |
tb = s->tb; |
874 |
if (__builtin_expect (s->singlestep_enabled, 0)) { |
875 |
gen_exception(s, dest, EXCP_DEBUG); |
876 |
} else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || |
877 |
(s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { |
878 |
tcg_gen_goto_tb(n); |
879 |
tcg_gen_movi_i32(QREG_PC, dest); |
880 |
tcg_gen_exit_tb((long)tb + n);
|
881 |
} else {
|
882 |
gen_jmp_im(s, dest); |
883 |
tcg_gen_exit_tb(0);
|
884 |
} |
885 |
s->is_jmp = DISAS_TB_JUMP; |
886 |
} |
887 |
|
888 |
DISAS_INSN(undef_mac) |
889 |
{ |
890 |
gen_exception(s, s->pc - 2, EXCP_LINEA);
|
891 |
} |
892 |
|
893 |
DISAS_INSN(undef_fpu) |
894 |
{ |
895 |
gen_exception(s, s->pc - 2, EXCP_LINEF);
|
896 |
} |
897 |
|
898 |
DISAS_INSN(undef) |
899 |
{ |
900 |
gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
|
901 |
cpu_abort(cpu_single_env, "Illegal instruction: %04x @ %08x",
|
902 |
insn, s->pc - 2);
|
903 |
} |
904 |
|
905 |
DISAS_INSN(mulw) |
906 |
{ |
907 |
TCGv reg; |
908 |
TCGv tmp; |
909 |
TCGv src; |
910 |
int sign;
|
911 |
|
912 |
sign = (insn & 0x100) != 0; |
913 |
reg = DREG(insn, 9);
|
914 |
tmp = gen_new_qreg(QMODE_I32); |
915 |
if (sign)
|
916 |
tcg_gen_ext16s_i32(tmp, reg); |
917 |
else
|
918 |
tcg_gen_ext16u_i32(tmp, reg); |
919 |
SRC_EA(src, OS_WORD, sign, NULL);
|
920 |
tcg_gen_mul_i32(tmp, tmp, src); |
921 |
tcg_gen_mov_i32(reg, tmp); |
922 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
923 |
gen_logic_cc(s, tmp); |
924 |
} |
925 |
|
926 |
DISAS_INSN(divw) |
927 |
{ |
928 |
TCGv reg; |
929 |
TCGv tmp; |
930 |
TCGv src; |
931 |
int sign;
|
932 |
|
933 |
sign = (insn & 0x100) != 0; |
934 |
reg = DREG(insn, 9);
|
935 |
if (sign) {
|
936 |
tcg_gen_ext16s_i32(QREG_DIV1, reg); |
937 |
} else {
|
938 |
tcg_gen_ext16u_i32(QREG_DIV1, reg); |
939 |
} |
940 |
SRC_EA(src, OS_WORD, sign, NULL);
|
941 |
tcg_gen_mov_i32(QREG_DIV2, src); |
942 |
if (sign) {
|
943 |
gen_helper_divs(cpu_env, tcg_const_i32(1));
|
944 |
} else {
|
945 |
gen_helper_divu(cpu_env, tcg_const_i32(1));
|
946 |
} |
947 |
|
948 |
tmp = gen_new_qreg(QMODE_I32); |
949 |
src = gen_new_qreg(QMODE_I32); |
950 |
tcg_gen_ext16u_i32(tmp, QREG_DIV1); |
951 |
tcg_gen_shli_i32(src, QREG_DIV2, 16);
|
952 |
tcg_gen_or_i32(reg, tmp, src); |
953 |
s->cc_op = CC_OP_FLAGS; |
954 |
} |
955 |
|
956 |
DISAS_INSN(divl) |
957 |
{ |
958 |
TCGv num; |
959 |
TCGv den; |
960 |
TCGv reg; |
961 |
uint16_t ext; |
962 |
|
963 |
ext = lduw_code(s->pc); |
964 |
s->pc += 2;
|
965 |
if (ext & 0x87f8) { |
966 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
967 |
return;
|
968 |
} |
969 |
num = DREG(ext, 12);
|
970 |
reg = DREG(ext, 0);
|
971 |
tcg_gen_mov_i32(QREG_DIV1, num); |
972 |
SRC_EA(den, OS_LONG, 0, NULL); |
973 |
tcg_gen_mov_i32(QREG_DIV2, den); |
974 |
if (ext & 0x0800) { |
975 |
gen_helper_divs(cpu_env, tcg_const_i32(0));
|
976 |
} else {
|
977 |
gen_helper_divu(cpu_env, tcg_const_i32(0));
|
978 |
} |
979 |
if ((ext & 7) == ((ext >> 12) & 7)) { |
980 |
/* div */
|
981 |
tcg_gen_mov_i32 (reg, QREG_DIV1); |
982 |
} else {
|
983 |
/* rem */
|
984 |
tcg_gen_mov_i32 (reg, QREG_DIV2); |
985 |
} |
986 |
s->cc_op = CC_OP_FLAGS; |
987 |
} |
988 |
|
989 |
DISAS_INSN(addsub) |
990 |
{ |
991 |
TCGv reg; |
992 |
TCGv dest; |
993 |
TCGv src; |
994 |
TCGv tmp; |
995 |
TCGv addr; |
996 |
int add;
|
997 |
|
998 |
add = (insn & 0x4000) != 0; |
999 |
reg = DREG(insn, 9);
|
1000 |
dest = gen_new_qreg(QMODE_I32); |
1001 |
if (insn & 0x100) { |
1002 |
SRC_EA(tmp, OS_LONG, 0, &addr);
|
1003 |
src = reg; |
1004 |
} else {
|
1005 |
tmp = reg; |
1006 |
SRC_EA(src, OS_LONG, 0, NULL); |
1007 |
} |
1008 |
if (add) {
|
1009 |
tcg_gen_add_i32(dest, tmp, src); |
1010 |
gen_helper_xflag_lt(QREG_CC_X, dest, src); |
1011 |
s->cc_op = CC_OP_ADD; |
1012 |
} else {
|
1013 |
gen_helper_xflag_lt(QREG_CC_X, tmp, src); |
1014 |
tcg_gen_sub_i32(dest, tmp, src); |
1015 |
s->cc_op = CC_OP_SUB; |
1016 |
} |
1017 |
gen_update_cc_add(dest, src); |
1018 |
if (insn & 0x100) { |
1019 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1020 |
} else {
|
1021 |
tcg_gen_mov_i32(reg, dest); |
1022 |
} |
1023 |
} |
1024 |
|
1025 |
|
1026 |
/* Reverse the order of the bits in REG. */
|
1027 |
DISAS_INSN(bitrev) |
1028 |
{ |
1029 |
TCGv reg; |
1030 |
reg = DREG(insn, 0);
|
1031 |
gen_helper_bitrev(reg, reg); |
1032 |
} |
1033 |
|
1034 |
DISAS_INSN(bitop_reg) |
1035 |
{ |
1036 |
int opsize;
|
1037 |
int op;
|
1038 |
TCGv src1; |
1039 |
TCGv src2; |
1040 |
TCGv tmp; |
1041 |
TCGv addr; |
1042 |
TCGv dest; |
1043 |
|
1044 |
if ((insn & 0x38) != 0) |
1045 |
opsize = OS_BYTE; |
1046 |
else
|
1047 |
opsize = OS_LONG; |
1048 |
op = (insn >> 6) & 3; |
1049 |
SRC_EA(src1, opsize, 0, op ? &addr: NULL); |
1050 |
src2 = DREG(insn, 9);
|
1051 |
dest = gen_new_qreg(QMODE_I32); |
1052 |
|
1053 |
gen_flush_flags(s); |
1054 |
tmp = gen_new_qreg(QMODE_I32); |
1055 |
if (opsize == OS_BYTE)
|
1056 |
tcg_gen_andi_i32(tmp, src2, 7);
|
1057 |
else
|
1058 |
tcg_gen_andi_i32(tmp, src2, 31);
|
1059 |
src2 = tmp; |
1060 |
tmp = gen_new_qreg(QMODE_I32); |
1061 |
tcg_gen_shr_i32(tmp, src1, src2); |
1062 |
tcg_gen_andi_i32(tmp, tmp, 1);
|
1063 |
tcg_gen_shli_i32(tmp, tmp, 2);
|
1064 |
/* Clear CCF_Z if bit set. */
|
1065 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
1066 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
1067 |
|
1068 |
tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
|
1069 |
switch (op) {
|
1070 |
case 1: /* bchg */ |
1071 |
tcg_gen_xor_i32(dest, src1, tmp); |
1072 |
break;
|
1073 |
case 2: /* bclr */ |
1074 |
tcg_gen_not_i32(tmp, tmp); |
1075 |
tcg_gen_and_i32(dest, src1, tmp); |
1076 |
break;
|
1077 |
case 3: /* bset */ |
1078 |
tcg_gen_or_i32(dest, src1, tmp); |
1079 |
break;
|
1080 |
default: /* btst */ |
1081 |
break;
|
1082 |
} |
1083 |
if (op)
|
1084 |
DEST_EA(insn, opsize, dest, &addr); |
1085 |
} |
1086 |
|
1087 |
DISAS_INSN(sats) |
1088 |
{ |
1089 |
TCGv reg; |
1090 |
reg = DREG(insn, 0);
|
1091 |
gen_flush_flags(s); |
1092 |
gen_helper_sats(reg, reg, QREG_CC_DEST); |
1093 |
gen_logic_cc(s, reg); |
1094 |
} |
1095 |
|
1096 |
static void gen_push(DisasContext *s, TCGv val) |
1097 |
{ |
1098 |
TCGv tmp; |
1099 |
|
1100 |
tmp = gen_new_qreg(QMODE_I32); |
1101 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
1102 |
gen_store(s, OS_LONG, tmp, val); |
1103 |
tcg_gen_mov_i32(QREG_SP, tmp); |
1104 |
} |
1105 |
|
1106 |
DISAS_INSN(movem) |
1107 |
{ |
1108 |
TCGv addr; |
1109 |
int i;
|
1110 |
uint16_t mask; |
1111 |
TCGv reg; |
1112 |
TCGv tmp; |
1113 |
int is_load;
|
1114 |
|
1115 |
mask = lduw_code(s->pc); |
1116 |
s->pc += 2;
|
1117 |
tmp = gen_lea(s, insn, OS_LONG); |
1118 |
if (IS_NULL_QREG(tmp)) {
|
1119 |
gen_addr_fault(s); |
1120 |
return;
|
1121 |
} |
1122 |
addr = gen_new_qreg(QMODE_I32); |
1123 |
tcg_gen_mov_i32(addr, tmp); |
1124 |
is_load = ((insn & 0x0400) != 0); |
1125 |
for (i = 0; i < 16; i++, mask >>= 1) { |
1126 |
if (mask & 1) { |
1127 |
if (i < 8) |
1128 |
reg = DREG(i, 0);
|
1129 |
else
|
1130 |
reg = AREG(i, 0);
|
1131 |
if (is_load) {
|
1132 |
tmp = gen_load(s, OS_LONG, addr, 0);
|
1133 |
tcg_gen_mov_i32(reg, tmp); |
1134 |
} else {
|
1135 |
gen_store(s, OS_LONG, addr, reg); |
1136 |
} |
1137 |
if (mask != 1) |
1138 |
tcg_gen_addi_i32(addr, addr, 4);
|
1139 |
} |
1140 |
} |
1141 |
} |
1142 |
|
1143 |
DISAS_INSN(bitop_im) |
1144 |
{ |
1145 |
int opsize;
|
1146 |
int op;
|
1147 |
TCGv src1; |
1148 |
uint32_t mask; |
1149 |
int bitnum;
|
1150 |
TCGv tmp; |
1151 |
TCGv addr; |
1152 |
|
1153 |
if ((insn & 0x38) != 0) |
1154 |
opsize = OS_BYTE; |
1155 |
else
|
1156 |
opsize = OS_LONG; |
1157 |
op = (insn >> 6) & 3; |
1158 |
|
1159 |
bitnum = lduw_code(s->pc); |
1160 |
s->pc += 2;
|
1161 |
if (bitnum & 0xff00) { |
1162 |
disas_undef(s, insn); |
1163 |
return;
|
1164 |
} |
1165 |
|
1166 |
SRC_EA(src1, opsize, 0, op ? &addr: NULL); |
1167 |
|
1168 |
gen_flush_flags(s); |
1169 |
if (opsize == OS_BYTE)
|
1170 |
bitnum &= 7;
|
1171 |
else
|
1172 |
bitnum &= 31;
|
1173 |
mask = 1 << bitnum;
|
1174 |
|
1175 |
tmp = gen_new_qreg(QMODE_I32); |
1176 |
assert (CCF_Z == (1 << 2)); |
1177 |
if (bitnum > 2) |
1178 |
tcg_gen_shri_i32(tmp, src1, bitnum - 2);
|
1179 |
else if (bitnum < 2) |
1180 |
tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
|
1181 |
else
|
1182 |
tcg_gen_mov_i32(tmp, src1); |
1183 |
tcg_gen_andi_i32(tmp, tmp, CCF_Z); |
1184 |
/* Clear CCF_Z if bit set. */
|
1185 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
1186 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
1187 |
if (op) {
|
1188 |
switch (op) {
|
1189 |
case 1: /* bchg */ |
1190 |
tcg_gen_xori_i32(tmp, src1, mask); |
1191 |
break;
|
1192 |
case 2: /* bclr */ |
1193 |
tcg_gen_andi_i32(tmp, src1, ~mask); |
1194 |
break;
|
1195 |
case 3: /* bset */ |
1196 |
tcg_gen_ori_i32(tmp, src1, mask); |
1197 |
break;
|
1198 |
default: /* btst */ |
1199 |
break;
|
1200 |
} |
1201 |
DEST_EA(insn, opsize, tmp, &addr); |
1202 |
} |
1203 |
} |
1204 |
|
1205 |
DISAS_INSN(arith_im) |
1206 |
{ |
1207 |
int op;
|
1208 |
uint32_t im; |
1209 |
TCGv src1; |
1210 |
TCGv dest; |
1211 |
TCGv addr; |
1212 |
|
1213 |
op = (insn >> 9) & 7; |
1214 |
SRC_EA(src1, OS_LONG, 0, (op == 6) ? NULL : &addr); |
1215 |
im = read_im32(s); |
1216 |
dest = gen_new_qreg(QMODE_I32); |
1217 |
switch (op) {
|
1218 |
case 0: /* ori */ |
1219 |
tcg_gen_ori_i32(dest, src1, im); |
1220 |
gen_logic_cc(s, dest); |
1221 |
break;
|
1222 |
case 1: /* andi */ |
1223 |
tcg_gen_andi_i32(dest, src1, im); |
1224 |
gen_logic_cc(s, dest); |
1225 |
break;
|
1226 |
case 2: /* subi */ |
1227 |
tcg_gen_mov_i32(dest, src1); |
1228 |
gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im)); |
1229 |
tcg_gen_subi_i32(dest, dest, im); |
1230 |
gen_update_cc_add(dest, gen_im32(im)); |
1231 |
s->cc_op = CC_OP_SUB; |
1232 |
break;
|
1233 |
case 3: /* addi */ |
1234 |
tcg_gen_mov_i32(dest, src1); |
1235 |
tcg_gen_addi_i32(dest, dest, im); |
1236 |
gen_update_cc_add(dest, gen_im32(im)); |
1237 |
gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im)); |
1238 |
s->cc_op = CC_OP_ADD; |
1239 |
break;
|
1240 |
case 5: /* eori */ |
1241 |
tcg_gen_xori_i32(dest, src1, im); |
1242 |
gen_logic_cc(s, dest); |
1243 |
break;
|
1244 |
case 6: /* cmpi */ |
1245 |
tcg_gen_mov_i32(dest, src1); |
1246 |
tcg_gen_subi_i32(dest, dest, im); |
1247 |
gen_update_cc_add(dest, gen_im32(im)); |
1248 |
s->cc_op = CC_OP_SUB; |
1249 |
break;
|
1250 |
default:
|
1251 |
abort(); |
1252 |
} |
1253 |
if (op != 6) { |
1254 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1255 |
} |
1256 |
} |
1257 |
|
1258 |
DISAS_INSN(byterev) |
1259 |
{ |
1260 |
TCGv reg; |
1261 |
|
1262 |
reg = DREG(insn, 0);
|
1263 |
tcg_gen_bswap_i32(reg, reg); |
1264 |
} |
1265 |
|
1266 |
DISAS_INSN(move) |
1267 |
{ |
1268 |
TCGv src; |
1269 |
TCGv dest; |
1270 |
int op;
|
1271 |
int opsize;
|
1272 |
|
1273 |
switch (insn >> 12) { |
1274 |
case 1: /* move.b */ |
1275 |
opsize = OS_BYTE; |
1276 |
break;
|
1277 |
case 2: /* move.l */ |
1278 |
opsize = OS_LONG; |
1279 |
break;
|
1280 |
case 3: /* move.w */ |
1281 |
opsize = OS_WORD; |
1282 |
break;
|
1283 |
default:
|
1284 |
abort(); |
1285 |
} |
1286 |
SRC_EA(src, opsize, 1, NULL); |
1287 |
op = (insn >> 6) & 7; |
1288 |
if (op == 1) { |
1289 |
/* movea */
|
1290 |
/* The value will already have been sign extended. */
|
1291 |
dest = AREG(insn, 9);
|
1292 |
tcg_gen_mov_i32(dest, src); |
1293 |
} else {
|
1294 |
/* normal move */
|
1295 |
uint16_t dest_ea; |
1296 |
dest_ea = ((insn >> 9) & 7) | (op << 3); |
1297 |
DEST_EA(dest_ea, opsize, src, NULL);
|
1298 |
/* This will be correct because loads sign extend. */
|
1299 |
gen_logic_cc(s, src); |
1300 |
} |
1301 |
} |
1302 |
|
1303 |
DISAS_INSN(negx) |
1304 |
{ |
1305 |
TCGv reg; |
1306 |
|
1307 |
gen_flush_flags(s); |
1308 |
reg = DREG(insn, 0);
|
1309 |
gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
|
1310 |
} |
1311 |
|
1312 |
DISAS_INSN(lea) |
1313 |
{ |
1314 |
TCGv reg; |
1315 |
TCGv tmp; |
1316 |
|
1317 |
reg = AREG(insn, 9);
|
1318 |
tmp = gen_lea(s, insn, OS_LONG); |
1319 |
if (IS_NULL_QREG(tmp)) {
|
1320 |
gen_addr_fault(s); |
1321 |
return;
|
1322 |
} |
1323 |
tcg_gen_mov_i32(reg, tmp); |
1324 |
} |
1325 |
|
1326 |
DISAS_INSN(clr) |
1327 |
{ |
1328 |
int opsize;
|
1329 |
|
1330 |
switch ((insn >> 6) & 3) { |
1331 |
case 0: /* clr.b */ |
1332 |
opsize = OS_BYTE; |
1333 |
break;
|
1334 |
case 1: /* clr.w */ |
1335 |
opsize = OS_WORD; |
1336 |
break;
|
1337 |
case 2: /* clr.l */ |
1338 |
opsize = OS_LONG; |
1339 |
break;
|
1340 |
default:
|
1341 |
abort(); |
1342 |
} |
1343 |
DEST_EA(insn, opsize, gen_im32(0), NULL); |
1344 |
gen_logic_cc(s, gen_im32(0));
|
1345 |
} |
1346 |
|
1347 |
static TCGv gen_get_ccr(DisasContext *s)
|
1348 |
{ |
1349 |
TCGv dest; |
1350 |
|
1351 |
gen_flush_flags(s); |
1352 |
dest = gen_new_qreg(QMODE_I32); |
1353 |
tcg_gen_shli_i32(dest, QREG_CC_X, 4);
|
1354 |
tcg_gen_or_i32(dest, dest, QREG_CC_DEST); |
1355 |
return dest;
|
1356 |
} |
1357 |
|
1358 |
DISAS_INSN(move_from_ccr) |
1359 |
{ |
1360 |
TCGv reg; |
1361 |
TCGv ccr; |
1362 |
|
1363 |
ccr = gen_get_ccr(s); |
1364 |
reg = DREG(insn, 0);
|
1365 |
gen_partset_reg(OS_WORD, reg, ccr); |
1366 |
} |
1367 |
|
1368 |
DISAS_INSN(neg) |
1369 |
{ |
1370 |
TCGv reg; |
1371 |
TCGv src1; |
1372 |
|
1373 |
reg = DREG(insn, 0);
|
1374 |
src1 = gen_new_qreg(QMODE_I32); |
1375 |
tcg_gen_mov_i32(src1, reg); |
1376 |
tcg_gen_neg_i32(reg, src1); |
1377 |
s->cc_op = CC_OP_SUB; |
1378 |
gen_update_cc_add(reg, src1); |
1379 |
gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
|
1380 |
s->cc_op = CC_OP_SUB; |
1381 |
} |
1382 |
|
1383 |
static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only) |
1384 |
{ |
1385 |
tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
|
1386 |
tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4); |
1387 |
if (!ccr_only) {
|
1388 |
gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
|
1389 |
} |
1390 |
} |
1391 |
|
1392 |
static void gen_set_sr(DisasContext *s, uint16_t insn, int ccr_only) |
1393 |
{ |
1394 |
TCGv tmp; |
1395 |
TCGv reg; |
1396 |
|
1397 |
s->cc_op = CC_OP_FLAGS; |
1398 |
if ((insn & 0x38) == 0) |
1399 |
{ |
1400 |
tmp = gen_new_qreg(QMODE_I32); |
1401 |
reg = DREG(insn, 0);
|
1402 |
tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
|
1403 |
tcg_gen_shri_i32(tmp, reg, 4);
|
1404 |
tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
|
1405 |
if (!ccr_only) {
|
1406 |
gen_helper_set_sr(cpu_env, reg); |
1407 |
} |
1408 |
} |
1409 |
else if ((insn & 0x3f) == 0x3c) |
1410 |
{ |
1411 |
uint16_t val; |
1412 |
val = lduw_code(s->pc); |
1413 |
s->pc += 2;
|
1414 |
gen_set_sr_im(s, val, ccr_only); |
1415 |
} |
1416 |
else
|
1417 |
disas_undef(s, insn); |
1418 |
} |
1419 |
|
1420 |
DISAS_INSN(move_to_ccr) |
1421 |
{ |
1422 |
gen_set_sr(s, insn, 1);
|
1423 |
} |
1424 |
|
1425 |
DISAS_INSN(not) |
1426 |
{ |
1427 |
TCGv reg; |
1428 |
|
1429 |
reg = DREG(insn, 0);
|
1430 |
tcg_gen_not_i32(reg, reg); |
1431 |
gen_logic_cc(s, reg); |
1432 |
} |
1433 |
|
1434 |
DISAS_INSN(swap) |
1435 |
{ |
1436 |
TCGv src1; |
1437 |
TCGv src2; |
1438 |
TCGv reg; |
1439 |
|
1440 |
src1 = gen_new_qreg(QMODE_I32); |
1441 |
src2 = gen_new_qreg(QMODE_I32); |
1442 |
reg = DREG(insn, 0);
|
1443 |
tcg_gen_shli_i32(src1, reg, 16);
|
1444 |
tcg_gen_shri_i32(src2, reg, 16);
|
1445 |
tcg_gen_or_i32(reg, src1, src2); |
1446 |
gen_logic_cc(s, reg); |
1447 |
} |
1448 |
|
1449 |
DISAS_INSN(pea) |
1450 |
{ |
1451 |
TCGv tmp; |
1452 |
|
1453 |
tmp = gen_lea(s, insn, OS_LONG); |
1454 |
if (IS_NULL_QREG(tmp)) {
|
1455 |
gen_addr_fault(s); |
1456 |
return;
|
1457 |
} |
1458 |
gen_push(s, tmp); |
1459 |
} |
1460 |
|
1461 |
DISAS_INSN(ext) |
1462 |
{ |
1463 |
int op;
|
1464 |
TCGv reg; |
1465 |
TCGv tmp; |
1466 |
|
1467 |
reg = DREG(insn, 0);
|
1468 |
op = (insn >> 6) & 7; |
1469 |
tmp = gen_new_qreg(QMODE_I32); |
1470 |
if (op == 3) |
1471 |
tcg_gen_ext16s_i32(tmp, reg); |
1472 |
else
|
1473 |
tcg_gen_ext8s_i32(tmp, reg); |
1474 |
if (op == 2) |
1475 |
gen_partset_reg(OS_WORD, reg, tmp); |
1476 |
else
|
1477 |
tcg_gen_mov_i32(reg, tmp); |
1478 |
gen_logic_cc(s, tmp); |
1479 |
} |
1480 |
|
1481 |
DISAS_INSN(tst) |
1482 |
{ |
1483 |
int opsize;
|
1484 |
TCGv tmp; |
1485 |
|
1486 |
switch ((insn >> 6) & 3) { |
1487 |
case 0: /* tst.b */ |
1488 |
opsize = OS_BYTE; |
1489 |
break;
|
1490 |
case 1: /* tst.w */ |
1491 |
opsize = OS_WORD; |
1492 |
break;
|
1493 |
case 2: /* tst.l */ |
1494 |
opsize = OS_LONG; |
1495 |
break;
|
1496 |
default:
|
1497 |
abort(); |
1498 |
} |
1499 |
SRC_EA(tmp, opsize, 1, NULL); |
1500 |
gen_logic_cc(s, tmp); |
1501 |
} |
1502 |
|
1503 |
DISAS_INSN(pulse) |
1504 |
{ |
1505 |
/* Implemented as a NOP. */
|
1506 |
} |
1507 |
|
1508 |
DISAS_INSN(illegal) |
1509 |
{ |
1510 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
1511 |
} |
1512 |
|
1513 |
/* ??? This should be atomic. */
|
1514 |
DISAS_INSN(tas) |
1515 |
{ |
1516 |
TCGv dest; |
1517 |
TCGv src1; |
1518 |
TCGv addr; |
1519 |
|
1520 |
dest = gen_new_qreg(QMODE_I32); |
1521 |
SRC_EA(src1, OS_BYTE, 1, &addr);
|
1522 |
gen_logic_cc(s, src1); |
1523 |
tcg_gen_ori_i32(dest, src1, 0x80);
|
1524 |
DEST_EA(insn, OS_BYTE, dest, &addr); |
1525 |
} |
1526 |
|
1527 |
DISAS_INSN(mull) |
1528 |
{ |
1529 |
uint16_t ext; |
1530 |
TCGv reg; |
1531 |
TCGv src1; |
1532 |
TCGv dest; |
1533 |
|
1534 |
/* The upper 32 bits of the product are discarded, so
|
1535 |
muls.l and mulu.l are functionally equivalent. */
|
1536 |
ext = lduw_code(s->pc); |
1537 |
s->pc += 2;
|
1538 |
if (ext & 0x87ff) { |
1539 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
1540 |
return;
|
1541 |
} |
1542 |
reg = DREG(ext, 12);
|
1543 |
SRC_EA(src1, OS_LONG, 0, NULL); |
1544 |
dest = gen_new_qreg(QMODE_I32); |
1545 |
tcg_gen_mul_i32(dest, src1, reg); |
1546 |
tcg_gen_mov_i32(reg, dest); |
1547 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
1548 |
gen_logic_cc(s, dest); |
1549 |
} |
1550 |
|
1551 |
DISAS_INSN(link) |
1552 |
{ |
1553 |
int16_t offset; |
1554 |
TCGv reg; |
1555 |
TCGv tmp; |
1556 |
|
1557 |
offset = ldsw_code(s->pc); |
1558 |
s->pc += 2;
|
1559 |
reg = AREG(insn, 0);
|
1560 |
tmp = gen_new_qreg(QMODE_I32); |
1561 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
1562 |
gen_store(s, OS_LONG, tmp, reg); |
1563 |
if ((insn & 7) != 7) |
1564 |
tcg_gen_mov_i32(reg, tmp); |
1565 |
tcg_gen_addi_i32(QREG_SP, tmp, offset); |
1566 |
} |
1567 |
|
1568 |
DISAS_INSN(unlk) |
1569 |
{ |
1570 |
TCGv src; |
1571 |
TCGv reg; |
1572 |
TCGv tmp; |
1573 |
|
1574 |
src = gen_new_qreg(QMODE_I32); |
1575 |
reg = AREG(insn, 0);
|
1576 |
tcg_gen_mov_i32(src, reg); |
1577 |
tmp = gen_load(s, OS_LONG, src, 0);
|
1578 |
tcg_gen_mov_i32(reg, tmp); |
1579 |
tcg_gen_addi_i32(QREG_SP, src, 4);
|
1580 |
} |
1581 |
|
1582 |
DISAS_INSN(nop) |
1583 |
{ |
1584 |
} |
1585 |
|
1586 |
DISAS_INSN(rts) |
1587 |
{ |
1588 |
TCGv tmp; |
1589 |
|
1590 |
tmp = gen_load(s, OS_LONG, QREG_SP, 0);
|
1591 |
tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
|
1592 |
gen_jmp(s, tmp); |
1593 |
} |
1594 |
|
1595 |
DISAS_INSN(jump) |
1596 |
{ |
1597 |
TCGv tmp; |
1598 |
|
1599 |
/* Load the target address first to ensure correct exception
|
1600 |
behavior. */
|
1601 |
tmp = gen_lea(s, insn, OS_LONG); |
1602 |
if (IS_NULL_QREG(tmp)) {
|
1603 |
gen_addr_fault(s); |
1604 |
return;
|
1605 |
} |
1606 |
if ((insn & 0x40) == 0) { |
1607 |
/* jsr */
|
1608 |
gen_push(s, gen_im32(s->pc)); |
1609 |
} |
1610 |
gen_jmp(s, tmp); |
1611 |
} |
1612 |
|
1613 |
DISAS_INSN(addsubq) |
1614 |
{ |
1615 |
TCGv src1; |
1616 |
TCGv src2; |
1617 |
TCGv dest; |
1618 |
int val;
|
1619 |
TCGv addr; |
1620 |
|
1621 |
SRC_EA(src1, OS_LONG, 0, &addr);
|
1622 |
val = (insn >> 9) & 7; |
1623 |
if (val == 0) |
1624 |
val = 8;
|
1625 |
dest = gen_new_qreg(QMODE_I32); |
1626 |
tcg_gen_mov_i32(dest, src1); |
1627 |
if ((insn & 0x38) == 0x08) { |
1628 |
/* Don't update condition codes if the destination is an
|
1629 |
address register. */
|
1630 |
if (insn & 0x0100) { |
1631 |
tcg_gen_subi_i32(dest, dest, val); |
1632 |
} else {
|
1633 |
tcg_gen_addi_i32(dest, dest, val); |
1634 |
} |
1635 |
} else {
|
1636 |
src2 = gen_im32(val); |
1637 |
if (insn & 0x0100) { |
1638 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
1639 |
tcg_gen_subi_i32(dest, dest, val); |
1640 |
s->cc_op = CC_OP_SUB; |
1641 |
} else {
|
1642 |
tcg_gen_addi_i32(dest, dest, val); |
1643 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
1644 |
s->cc_op = CC_OP_ADD; |
1645 |
} |
1646 |
gen_update_cc_add(dest, src2); |
1647 |
} |
1648 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1649 |
} |
1650 |
|
1651 |
DISAS_INSN(tpf) |
1652 |
{ |
1653 |
switch (insn & 7) { |
1654 |
case 2: /* One extension word. */ |
1655 |
s->pc += 2;
|
1656 |
break;
|
1657 |
case 3: /* Two extension words. */ |
1658 |
s->pc += 4;
|
1659 |
break;
|
1660 |
case 4: /* No extension words. */ |
1661 |
break;
|
1662 |
default:
|
1663 |
disas_undef(s, insn); |
1664 |
} |
1665 |
} |
1666 |
|
1667 |
DISAS_INSN(branch) |
1668 |
{ |
1669 |
int32_t offset; |
1670 |
uint32_t base; |
1671 |
int op;
|
1672 |
int l1;
|
1673 |
|
1674 |
base = s->pc; |
1675 |
op = (insn >> 8) & 0xf; |
1676 |
offset = (int8_t)insn; |
1677 |
if (offset == 0) { |
1678 |
offset = ldsw_code(s->pc); |
1679 |
s->pc += 2;
|
1680 |
} else if (offset == -1) { |
1681 |
offset = read_im32(s); |
1682 |
} |
1683 |
if (op == 1) { |
1684 |
/* bsr */
|
1685 |
gen_push(s, gen_im32(s->pc)); |
1686 |
} |
1687 |
gen_flush_cc_op(s); |
1688 |
if (op > 1) { |
1689 |
/* Bcc */
|
1690 |
l1 = gen_new_label(); |
1691 |
gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1); |
1692 |
gen_jmp_tb(s, 1, base + offset);
|
1693 |
gen_set_label(l1); |
1694 |
gen_jmp_tb(s, 0, s->pc);
|
1695 |
} else {
|
1696 |
/* Unconditional branch. */
|
1697 |
gen_jmp_tb(s, 0, base + offset);
|
1698 |
} |
1699 |
} |
1700 |
|
1701 |
DISAS_INSN(moveq) |
1702 |
{ |
1703 |
uint32_t val; |
1704 |
|
1705 |
val = (int8_t)insn; |
1706 |
tcg_gen_movi_i32(DREG(insn, 9), val);
|
1707 |
gen_logic_cc(s, tcg_const_i32(val)); |
1708 |
} |
1709 |
|
1710 |
DISAS_INSN(mvzs) |
1711 |
{ |
1712 |
int opsize;
|
1713 |
TCGv src; |
1714 |
TCGv reg; |
1715 |
|
1716 |
if (insn & 0x40) |
1717 |
opsize = OS_WORD; |
1718 |
else
|
1719 |
opsize = OS_BYTE; |
1720 |
SRC_EA(src, opsize, (insn & 0x80) != 0, NULL); |
1721 |
reg = DREG(insn, 9);
|
1722 |
tcg_gen_mov_i32(reg, src); |
1723 |
gen_logic_cc(s, src); |
1724 |
} |
1725 |
|
1726 |
DISAS_INSN(or) |
1727 |
{ |
1728 |
TCGv reg; |
1729 |
TCGv dest; |
1730 |
TCGv src; |
1731 |
TCGv addr; |
1732 |
|
1733 |
reg = DREG(insn, 9);
|
1734 |
dest = gen_new_qreg(QMODE_I32); |
1735 |
if (insn & 0x100) { |
1736 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1737 |
tcg_gen_or_i32(dest, src, reg); |
1738 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1739 |
} else {
|
1740 |
SRC_EA(src, OS_LONG, 0, NULL); |
1741 |
tcg_gen_or_i32(dest, src, reg); |
1742 |
tcg_gen_mov_i32(reg, dest); |
1743 |
} |
1744 |
gen_logic_cc(s, dest); |
1745 |
} |
1746 |
|
1747 |
DISAS_INSN(suba) |
1748 |
{ |
1749 |
TCGv src; |
1750 |
TCGv reg; |
1751 |
|
1752 |
SRC_EA(src, OS_LONG, 0, NULL); |
1753 |
reg = AREG(insn, 9);
|
1754 |
tcg_gen_sub_i32(reg, reg, src); |
1755 |
} |
1756 |
|
1757 |
DISAS_INSN(subx) |
1758 |
{ |
1759 |
TCGv reg; |
1760 |
TCGv src; |
1761 |
|
1762 |
gen_flush_flags(s); |
1763 |
reg = DREG(insn, 9);
|
1764 |
src = DREG(insn, 0);
|
1765 |
gen_helper_subx_cc(reg, cpu_env, reg, src); |
1766 |
} |
1767 |
|
1768 |
DISAS_INSN(mov3q) |
1769 |
{ |
1770 |
TCGv src; |
1771 |
int val;
|
1772 |
|
1773 |
val = (insn >> 9) & 7; |
1774 |
if (val == 0) |
1775 |
val = -1;
|
1776 |
src = gen_im32(val); |
1777 |
gen_logic_cc(s, src); |
1778 |
DEST_EA(insn, OS_LONG, src, NULL);
|
1779 |
} |
1780 |
|
1781 |
DISAS_INSN(cmp) |
1782 |
{ |
1783 |
int op;
|
1784 |
TCGv src; |
1785 |
TCGv reg; |
1786 |
TCGv dest; |
1787 |
int opsize;
|
1788 |
|
1789 |
op = (insn >> 6) & 3; |
1790 |
switch (op) {
|
1791 |
case 0: /* cmp.b */ |
1792 |
opsize = OS_BYTE; |
1793 |
s->cc_op = CC_OP_CMPB; |
1794 |
break;
|
1795 |
case 1: /* cmp.w */ |
1796 |
opsize = OS_WORD; |
1797 |
s->cc_op = CC_OP_CMPW; |
1798 |
break;
|
1799 |
case 2: /* cmp.l */ |
1800 |
opsize = OS_LONG; |
1801 |
s->cc_op = CC_OP_SUB; |
1802 |
break;
|
1803 |
default:
|
1804 |
abort(); |
1805 |
} |
1806 |
SRC_EA(src, opsize, 1, NULL); |
1807 |
reg = DREG(insn, 9);
|
1808 |
dest = gen_new_qreg(QMODE_I32); |
1809 |
tcg_gen_sub_i32(dest, reg, src); |
1810 |
gen_update_cc_add(dest, src); |
1811 |
} |
1812 |
|
1813 |
DISAS_INSN(cmpa) |
1814 |
{ |
1815 |
int opsize;
|
1816 |
TCGv src; |
1817 |
TCGv reg; |
1818 |
TCGv dest; |
1819 |
|
1820 |
if (insn & 0x100) { |
1821 |
opsize = OS_LONG; |
1822 |
} else {
|
1823 |
opsize = OS_WORD; |
1824 |
} |
1825 |
SRC_EA(src, opsize, 1, NULL); |
1826 |
reg = AREG(insn, 9);
|
1827 |
dest = gen_new_qreg(QMODE_I32); |
1828 |
tcg_gen_sub_i32(dest, reg, src); |
1829 |
gen_update_cc_add(dest, src); |
1830 |
s->cc_op = CC_OP_SUB; |
1831 |
} |
1832 |
|
1833 |
DISAS_INSN(eor) |
1834 |
{ |
1835 |
TCGv src; |
1836 |
TCGv reg; |
1837 |
TCGv dest; |
1838 |
TCGv addr; |
1839 |
|
1840 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1841 |
reg = DREG(insn, 9);
|
1842 |
dest = gen_new_qreg(QMODE_I32); |
1843 |
tcg_gen_xor_i32(dest, src, reg); |
1844 |
gen_logic_cc(s, dest); |
1845 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1846 |
} |
1847 |
|
1848 |
DISAS_INSN(and) |
1849 |
{ |
1850 |
TCGv src; |
1851 |
TCGv reg; |
1852 |
TCGv dest; |
1853 |
TCGv addr; |
1854 |
|
1855 |
reg = DREG(insn, 9);
|
1856 |
dest = gen_new_qreg(QMODE_I32); |
1857 |
if (insn & 0x100) { |
1858 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1859 |
tcg_gen_and_i32(dest, src, reg); |
1860 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1861 |
} else {
|
1862 |
SRC_EA(src, OS_LONG, 0, NULL); |
1863 |
tcg_gen_and_i32(dest, src, reg); |
1864 |
tcg_gen_mov_i32(reg, dest); |
1865 |
} |
1866 |
gen_logic_cc(s, dest); |
1867 |
} |
1868 |
|
1869 |
DISAS_INSN(adda) |
1870 |
{ |
1871 |
TCGv src; |
1872 |
TCGv reg; |
1873 |
|
1874 |
SRC_EA(src, OS_LONG, 0, NULL); |
1875 |
reg = AREG(insn, 9);
|
1876 |
tcg_gen_add_i32(reg, reg, src); |
1877 |
} |
1878 |
|
1879 |
DISAS_INSN(addx) |
1880 |
{ |
1881 |
TCGv reg; |
1882 |
TCGv src; |
1883 |
|
1884 |
gen_flush_flags(s); |
1885 |
reg = DREG(insn, 9);
|
1886 |
src = DREG(insn, 0);
|
1887 |
gen_helper_addx_cc(reg, cpu_env, reg, src); |
1888 |
s->cc_op = CC_OP_FLAGS; |
1889 |
} |
1890 |
|
1891 |
/* TODO: This could be implemented without helper functions. */
|
1892 |
DISAS_INSN(shift_im) |
1893 |
{ |
1894 |
TCGv reg; |
1895 |
int tmp;
|
1896 |
TCGv shift; |
1897 |
|
1898 |
reg = DREG(insn, 0);
|
1899 |
tmp = (insn >> 9) & 7; |
1900 |
if (tmp == 0) |
1901 |
tmp = 8;
|
1902 |
shift = gen_im32(tmp); |
1903 |
/* No need to flush flags becuse we know we will set C flag. */
|
1904 |
if (insn & 0x100) { |
1905 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
1906 |
} else {
|
1907 |
if (insn & 8) { |
1908 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
1909 |
} else {
|
1910 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
1911 |
} |
1912 |
} |
1913 |
s->cc_op = CC_OP_SHIFT; |
1914 |
} |
1915 |
|
1916 |
DISAS_INSN(shift_reg) |
1917 |
{ |
1918 |
TCGv reg; |
1919 |
TCGv shift; |
1920 |
|
1921 |
reg = DREG(insn, 0);
|
1922 |
shift = DREG(insn, 9);
|
1923 |
/* Shift by zero leaves C flag unmodified. */
|
1924 |
gen_flush_flags(s); |
1925 |
if (insn & 0x100) { |
1926 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
1927 |
} else {
|
1928 |
if (insn & 8) { |
1929 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
1930 |
} else {
|
1931 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
1932 |
} |
1933 |
} |
1934 |
s->cc_op = CC_OP_SHIFT; |
1935 |
} |
1936 |
|
1937 |
DISAS_INSN(ff1) |
1938 |
{ |
1939 |
TCGv reg; |
1940 |
reg = DREG(insn, 0);
|
1941 |
gen_logic_cc(s, reg); |
1942 |
gen_helper_ff1(reg, reg); |
1943 |
} |
1944 |
|
1945 |
static TCGv gen_get_sr(DisasContext *s)
|
1946 |
{ |
1947 |
TCGv ccr; |
1948 |
TCGv sr; |
1949 |
|
1950 |
ccr = gen_get_ccr(s); |
1951 |
sr = gen_new_qreg(QMODE_I32); |
1952 |
tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
|
1953 |
tcg_gen_or_i32(sr, sr, ccr); |
1954 |
return sr;
|
1955 |
} |
1956 |
|
1957 |
DISAS_INSN(strldsr) |
1958 |
{ |
1959 |
uint16_t ext; |
1960 |
uint32_t addr; |
1961 |
|
1962 |
addr = s->pc - 2;
|
1963 |
ext = lduw_code(s->pc); |
1964 |
s->pc += 2;
|
1965 |
if (ext != 0x46FC) { |
1966 |
gen_exception(s, addr, EXCP_UNSUPPORTED); |
1967 |
return;
|
1968 |
} |
1969 |
ext = lduw_code(s->pc); |
1970 |
s->pc += 2;
|
1971 |
if (IS_USER(s) || (ext & SR_S) == 0) { |
1972 |
gen_exception(s, addr, EXCP_PRIVILEGE); |
1973 |
return;
|
1974 |
} |
1975 |
gen_push(s, gen_get_sr(s)); |
1976 |
gen_set_sr_im(s, ext, 0);
|
1977 |
} |
1978 |
|
1979 |
DISAS_INSN(move_from_sr) |
1980 |
{ |
1981 |
TCGv reg; |
1982 |
TCGv sr; |
1983 |
|
1984 |
if (IS_USER(s)) {
|
1985 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1986 |
return;
|
1987 |
} |
1988 |
sr = gen_get_sr(s); |
1989 |
reg = DREG(insn, 0);
|
1990 |
gen_partset_reg(OS_WORD, reg, sr); |
1991 |
} |
1992 |
|
1993 |
DISAS_INSN(move_to_sr) |
1994 |
{ |
1995 |
if (IS_USER(s)) {
|
1996 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1997 |
return;
|
1998 |
} |
1999 |
gen_set_sr(s, insn, 0);
|
2000 |
gen_lookup_tb(s); |
2001 |
} |
2002 |
|
2003 |
DISAS_INSN(move_from_usp) |
2004 |
{ |
2005 |
if (IS_USER(s)) {
|
2006 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2007 |
return;
|
2008 |
} |
2009 |
/* TODO: Implement USP. */
|
2010 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
2011 |
} |
2012 |
|
2013 |
DISAS_INSN(move_to_usp) |
2014 |
{ |
2015 |
if (IS_USER(s)) {
|
2016 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2017 |
return;
|
2018 |
} |
2019 |
/* TODO: Implement USP. */
|
2020 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
2021 |
} |
2022 |
|
2023 |
DISAS_INSN(halt) |
2024 |
{ |
2025 |
gen_exception(s, s->pc, EXCP_HALT_INSN); |
2026 |
} |
2027 |
|
2028 |
DISAS_INSN(stop) |
2029 |
{ |
2030 |
uint16_t ext; |
2031 |
|
2032 |
if (IS_USER(s)) {
|
2033 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2034 |
return;
|
2035 |
} |
2036 |
|
2037 |
ext = lduw_code(s->pc); |
2038 |
s->pc += 2;
|
2039 |
|
2040 |
gen_set_sr_im(s, ext, 0);
|
2041 |
tcg_gen_movi_i32(QREG_HALTED, 1);
|
2042 |
gen_exception(s, s->pc, EXCP_HLT); |
2043 |
} |
2044 |
|
2045 |
DISAS_INSN(rte) |
2046 |
{ |
2047 |
if (IS_USER(s)) {
|
2048 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2049 |
return;
|
2050 |
} |
2051 |
gen_exception(s, s->pc - 2, EXCP_RTE);
|
2052 |
} |
2053 |
|
2054 |
DISAS_INSN(movec) |
2055 |
{ |
2056 |
uint16_t ext; |
2057 |
TCGv reg; |
2058 |
|
2059 |
if (IS_USER(s)) {
|
2060 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2061 |
return;
|
2062 |
} |
2063 |
|
2064 |
ext = lduw_code(s->pc); |
2065 |
s->pc += 2;
|
2066 |
|
2067 |
if (ext & 0x8000) { |
2068 |
reg = AREG(ext, 12);
|
2069 |
} else {
|
2070 |
reg = DREG(ext, 12);
|
2071 |
} |
2072 |
gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
|
2073 |
gen_lookup_tb(s); |
2074 |
} |
2075 |
|
2076 |
DISAS_INSN(intouch) |
2077 |
{ |
2078 |
if (IS_USER(s)) {
|
2079 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2080 |
return;
|
2081 |
} |
2082 |
/* ICache fetch. Implement as no-op. */
|
2083 |
} |
2084 |
|
2085 |
DISAS_INSN(cpushl) |
2086 |
{ |
2087 |
if (IS_USER(s)) {
|
2088 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2089 |
return;
|
2090 |
} |
2091 |
/* Cache push/invalidate. Implement as no-op. */
|
2092 |
} |
2093 |
|
2094 |
DISAS_INSN(wddata) |
2095 |
{ |
2096 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2097 |
} |
2098 |
|
2099 |
DISAS_INSN(wdebug) |
2100 |
{ |
2101 |
if (IS_USER(s)) {
|
2102 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2103 |
return;
|
2104 |
} |
2105 |
/* TODO: Implement wdebug. */
|
2106 |
qemu_assert(0, "WDEBUG not implemented"); |
2107 |
} |
2108 |
|
2109 |
DISAS_INSN(trap) |
2110 |
{ |
2111 |
gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf)); |
2112 |
} |
2113 |
|
2114 |
/* ??? FP exceptions are not implemented. Most exceptions are deferred until
|
2115 |
immediately before the next FP instruction is executed. */
|
2116 |
DISAS_INSN(fpu) |
2117 |
{ |
2118 |
uint16_t ext; |
2119 |
int opmode;
|
2120 |
TCGv src; |
2121 |
TCGv dest; |
2122 |
TCGv res; |
2123 |
int round;
|
2124 |
int opsize;
|
2125 |
|
2126 |
ext = lduw_code(s->pc); |
2127 |
s->pc += 2;
|
2128 |
opmode = ext & 0x7f;
|
2129 |
switch ((ext >> 13) & 7) { |
2130 |
case 0: case 2: |
2131 |
break;
|
2132 |
case 1: |
2133 |
goto undef;
|
2134 |
case 3: /* fmove out */ |
2135 |
src = FREG(ext, 7);
|
2136 |
/* fmove */
|
2137 |
/* ??? TODO: Proper behavior on overflow. */
|
2138 |
switch ((ext >> 10) & 7) { |
2139 |
case 0: |
2140 |
opsize = OS_LONG; |
2141 |
res = gen_new_qreg(QMODE_I32); |
2142 |
gen_helper_f64_to_i32(res, cpu_env, src); |
2143 |
break;
|
2144 |
case 1: |
2145 |
opsize = OS_SINGLE; |
2146 |
res = gen_new_qreg(QMODE_F32); |
2147 |
gen_helper_f64_to_f32(res, cpu_env, src); |
2148 |
break;
|
2149 |
case 4: |
2150 |
opsize = OS_WORD; |
2151 |
res = gen_new_qreg(QMODE_I32); |
2152 |
gen_helper_f64_to_i32(res, cpu_env, src); |
2153 |
break;
|
2154 |
case 5: |
2155 |
opsize = OS_DOUBLE; |
2156 |
res = src; |
2157 |
break;
|
2158 |
case 6: |
2159 |
opsize = OS_BYTE; |
2160 |
res = gen_new_qreg(QMODE_I32); |
2161 |
gen_helper_f64_to_i32(res, cpu_env, src); |
2162 |
break;
|
2163 |
default:
|
2164 |
goto undef;
|
2165 |
} |
2166 |
DEST_EA(insn, opsize, res, NULL);
|
2167 |
return;
|
2168 |
case 4: /* fmove to control register. */ |
2169 |
switch ((ext >> 10) & 7) { |
2170 |
case 4: /* FPCR */ |
2171 |
/* Not implemented. Ignore writes. */
|
2172 |
break;
|
2173 |
case 1: /* FPIAR */ |
2174 |
case 2: /* FPSR */ |
2175 |
default:
|
2176 |
cpu_abort(NULL, "Unimplemented: fmove to control %d", |
2177 |
(ext >> 10) & 7); |
2178 |
} |
2179 |
break;
|
2180 |
case 5: /* fmove from control register. */ |
2181 |
switch ((ext >> 10) & 7) { |
2182 |
case 4: /* FPCR */ |
2183 |
/* Not implemented. Always return zero. */
|
2184 |
res = gen_im32(0);
|
2185 |
break;
|
2186 |
case 1: /* FPIAR */ |
2187 |
case 2: /* FPSR */ |
2188 |
default:
|
2189 |
cpu_abort(NULL, "Unimplemented: fmove from control %d", |
2190 |
(ext >> 10) & 7); |
2191 |
goto undef;
|
2192 |
} |
2193 |
DEST_EA(insn, OS_LONG, res, NULL);
|
2194 |
break;
|
2195 |
case 6: /* fmovem */ |
2196 |
case 7: |
2197 |
{ |
2198 |
TCGv addr; |
2199 |
uint16_t mask; |
2200 |
int i;
|
2201 |
if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0) |
2202 |
goto undef;
|
2203 |
src = gen_lea(s, insn, OS_LONG); |
2204 |
if (IS_NULL_QREG(src)) {
|
2205 |
gen_addr_fault(s); |
2206 |
return;
|
2207 |
} |
2208 |
addr = gen_new_qreg(QMODE_I32); |
2209 |
tcg_gen_mov_i32(addr, src); |
2210 |
mask = 0x80;
|
2211 |
for (i = 0; i < 8; i++) { |
2212 |
if (ext & mask) {
|
2213 |
s->is_mem = 1;
|
2214 |
dest = FREG(i, 0);
|
2215 |
if (ext & (1 << 13)) { |
2216 |
/* store */
|
2217 |
tcg_gen_qemu_stf64(dest, addr, IS_USER(s)); |
2218 |
} else {
|
2219 |
/* load */
|
2220 |
tcg_gen_qemu_ldf64(dest, addr, IS_USER(s)); |
2221 |
} |
2222 |
if (ext & (mask - 1)) |
2223 |
tcg_gen_addi_i32(addr, addr, 8);
|
2224 |
} |
2225 |
mask >>= 1;
|
2226 |
} |
2227 |
} |
2228 |
return;
|
2229 |
} |
2230 |
if (ext & (1 << 14)) { |
2231 |
TCGv tmp; |
2232 |
|
2233 |
/* Source effective address. */
|
2234 |
switch ((ext >> 10) & 7) { |
2235 |
case 0: opsize = OS_LONG; break; |
2236 |
case 1: opsize = OS_SINGLE; break; |
2237 |
case 4: opsize = OS_WORD; break; |
2238 |
case 5: opsize = OS_DOUBLE; break; |
2239 |
case 6: opsize = OS_BYTE; break; |
2240 |
default:
|
2241 |
goto undef;
|
2242 |
} |
2243 |
SRC_EA(tmp, opsize, 1, NULL); |
2244 |
if (opsize == OS_DOUBLE) {
|
2245 |
src = tmp; |
2246 |
} else {
|
2247 |
src = gen_new_qreg(QMODE_F64); |
2248 |
switch (opsize) {
|
2249 |
case OS_LONG:
|
2250 |
case OS_WORD:
|
2251 |
case OS_BYTE:
|
2252 |
gen_helper_i32_to_f64(src, cpu_env, tmp); |
2253 |
break;
|
2254 |
case OS_SINGLE:
|
2255 |
gen_helper_f32_to_f64(src, cpu_env, tmp); |
2256 |
break;
|
2257 |
} |
2258 |
} |
2259 |
} else {
|
2260 |
/* Source register. */
|
2261 |
src = FREG(ext, 10);
|
2262 |
} |
2263 |
dest = FREG(ext, 7);
|
2264 |
res = gen_new_qreg(QMODE_F64); |
2265 |
if (opmode != 0x3a) |
2266 |
tcg_gen_mov_f64(res, dest); |
2267 |
round = 1;
|
2268 |
switch (opmode) {
|
2269 |
case 0: case 0x40: case 0x44: /* fmove */ |
2270 |
tcg_gen_mov_f64(res, src); |
2271 |
break;
|
2272 |
case 1: /* fint */ |
2273 |
gen_helper_iround_f64(res, cpu_env, src); |
2274 |
round = 0;
|
2275 |
break;
|
2276 |
case 3: /* fintrz */ |
2277 |
gen_helper_itrunc_f64(res, cpu_env, src); |
2278 |
round = 0;
|
2279 |
break;
|
2280 |
case 4: case 0x41: case 0x45: /* fsqrt */ |
2281 |
gen_helper_sqrt_f64(res, cpu_env, src); |
2282 |
break;
|
2283 |
case 0x18: case 0x58: case 0x5c: /* fabs */ |
2284 |
gen_helper_abs_f64(res, src); |
2285 |
break;
|
2286 |
case 0x1a: case 0x5a: case 0x5e: /* fneg */ |
2287 |
gen_helper_chs_f64(res, src); |
2288 |
break;
|
2289 |
case 0x20: case 0x60: case 0x64: /* fdiv */ |
2290 |
gen_helper_div_f64(res, cpu_env, res, src); |
2291 |
break;
|
2292 |
case 0x22: case 0x62: case 0x66: /* fadd */ |
2293 |
gen_helper_add_f64(res, cpu_env, res, src); |
2294 |
break;
|
2295 |
case 0x23: case 0x63: case 0x67: /* fmul */ |
2296 |
gen_helper_mul_f64(res, cpu_env, res, src); |
2297 |
break;
|
2298 |
case 0x28: case 0x68: case 0x6c: /* fsub */ |
2299 |
gen_helper_sub_f64(res, cpu_env, res, src); |
2300 |
break;
|
2301 |
case 0x38: /* fcmp */ |
2302 |
gen_helper_sub_cmp_f64(res, cpu_env, res, src); |
2303 |
dest = NULL_QREG; |
2304 |
round = 0;
|
2305 |
break;
|
2306 |
case 0x3a: /* ftst */ |
2307 |
tcg_gen_mov_f64(res, src); |
2308 |
dest = NULL_QREG; |
2309 |
round = 0;
|
2310 |
break;
|
2311 |
default:
|
2312 |
goto undef;
|
2313 |
} |
2314 |
if (round) {
|
2315 |
if (opmode & 0x40) { |
2316 |
if ((opmode & 0x4) != 0) |
2317 |
round = 0;
|
2318 |
} else if ((s->fpcr & M68K_FPCR_PREC) == 0) { |
2319 |
round = 0;
|
2320 |
} |
2321 |
} |
2322 |
if (round) {
|
2323 |
TCGv tmp; |
2324 |
|
2325 |
tmp = gen_new_qreg(QMODE_F32); |
2326 |
gen_helper_f64_to_f32(tmp, cpu_env, res); |
2327 |
gen_helper_f32_to_f64(res, cpu_env, tmp); |
2328 |
} |
2329 |
tcg_gen_mov_f64(QREG_FP_RESULT, res); |
2330 |
if (!IS_NULL_QREG(dest)) {
|
2331 |
tcg_gen_mov_f64(dest, res); |
2332 |
} |
2333 |
return;
|
2334 |
undef:
|
2335 |
s->pc -= 2;
|
2336 |
disas_undef_fpu(s, insn); |
2337 |
} |
2338 |
|
2339 |
DISAS_INSN(fbcc) |
2340 |
{ |
2341 |
uint32_t offset; |
2342 |
uint32_t addr; |
2343 |
TCGv flag; |
2344 |
int l1;
|
2345 |
|
2346 |
addr = s->pc; |
2347 |
offset = ldsw_code(s->pc); |
2348 |
s->pc += 2;
|
2349 |
if (insn & (1 << 6)) { |
2350 |
offset = (offset << 16) | lduw_code(s->pc);
|
2351 |
s->pc += 2;
|
2352 |
} |
2353 |
|
2354 |
l1 = gen_new_label(); |
2355 |
/* TODO: Raise BSUN exception. */
|
2356 |
flag = gen_new_qreg(QMODE_I32); |
2357 |
gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT); |
2358 |
/* Jump to l1 if condition is true. */
|
2359 |
switch (insn & 0xf) { |
2360 |
case 0: /* f */ |
2361 |
break;
|
2362 |
case 1: /* eq (=0) */ |
2363 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
2364 |
break;
|
2365 |
case 2: /* ogt (=1) */ |
2366 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
|
2367 |
break;
|
2368 |
case 3: /* oge (=0 or =1) */ |
2369 |
tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
|
2370 |
break;
|
2371 |
case 4: /* olt (=-1) */ |
2372 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
|
2373 |
break;
|
2374 |
case 5: /* ole (=-1 or =0) */ |
2375 |
tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
|
2376 |
break;
|
2377 |
case 6: /* ogl (=-1 or =1) */ |
2378 |
tcg_gen_andi_i32(flag, flag, 1);
|
2379 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
2380 |
break;
|
2381 |
case 7: /* or (=2) */ |
2382 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
|
2383 |
break;
|
2384 |
case 8: /* un (<2) */ |
2385 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
|
2386 |
break;
|
2387 |
case 9: /* ueq (=0 or =2) */ |
2388 |
tcg_gen_andi_i32(flag, flag, 1);
|
2389 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
2390 |
break;
|
2391 |
case 10: /* ugt (>0) */ |
2392 |
tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
|
2393 |
break;
|
2394 |
case 11: /* uge (>=0) */ |
2395 |
tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
|
2396 |
break;
|
2397 |
case 12: /* ult (=-1 or =2) */ |
2398 |
tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
|
2399 |
break;
|
2400 |
case 13: /* ule (!=1) */ |
2401 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
|
2402 |
break;
|
2403 |
case 14: /* ne (!=0) */ |
2404 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
2405 |
break;
|
2406 |
case 15: /* t */ |
2407 |
tcg_gen_br(l1); |
2408 |
break;
|
2409 |
} |
2410 |
gen_jmp_tb(s, 0, s->pc);
|
2411 |
gen_set_label(l1); |
2412 |
gen_jmp_tb(s, 1, addr + offset);
|
2413 |
} |
2414 |
|
2415 |
DISAS_INSN(frestore) |
2416 |
{ |
2417 |
/* TODO: Implement frestore. */
|
2418 |
qemu_assert(0, "FRESTORE not implemented"); |
2419 |
} |
2420 |
|
2421 |
DISAS_INSN(fsave) |
2422 |
{ |
2423 |
/* TODO: Implement fsave. */
|
2424 |
qemu_assert(0, "FSAVE not implemented"); |
2425 |
} |
2426 |
|
2427 |
static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper) |
2428 |
{ |
2429 |
TCGv tmp = gen_new_qreg(QMODE_I32); |
2430 |
if (s->env->macsr & MACSR_FI) {
|
2431 |
if (upper)
|
2432 |
tcg_gen_andi_i32(tmp, val, 0xffff0000);
|
2433 |
else
|
2434 |
tcg_gen_shli_i32(tmp, val, 16);
|
2435 |
} else if (s->env->macsr & MACSR_SU) { |
2436 |
if (upper)
|
2437 |
tcg_gen_sari_i32(tmp, val, 16);
|
2438 |
else
|
2439 |
tcg_gen_ext16s_i32(tmp, val); |
2440 |
} else {
|
2441 |
if (upper)
|
2442 |
tcg_gen_shri_i32(tmp, val, 16);
|
2443 |
else
|
2444 |
tcg_gen_ext16u_i32(tmp, val); |
2445 |
} |
2446 |
return tmp;
|
2447 |
} |
2448 |
|
2449 |
static void gen_mac_clear_flags(void) |
2450 |
{ |
2451 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, |
2452 |
~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV)); |
2453 |
} |
2454 |
|
2455 |
DISAS_INSN(mac) |
2456 |
{ |
2457 |
TCGv rx; |
2458 |
TCGv ry; |
2459 |
uint16_t ext; |
2460 |
int acc;
|
2461 |
TCGv tmp; |
2462 |
TCGv addr; |
2463 |
TCGv loadval; |
2464 |
int dual;
|
2465 |
TCGv saved_flags; |
2466 |
|
2467 |
if (IS_NULL_QREG(s->mactmp))
|
2468 |
s->mactmp = tcg_temp_new(TCG_TYPE_I64); |
2469 |
|
2470 |
ext = lduw_code(s->pc); |
2471 |
s->pc += 2;
|
2472 |
|
2473 |
acc = ((insn >> 7) & 1) | ((ext >> 3) & 2); |
2474 |
dual = ((insn & 0x30) != 0 && (ext & 3) != 0); |
2475 |
if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
|
2476 |
disas_undef(s, insn); |
2477 |
return;
|
2478 |
} |
2479 |
if (insn & 0x30) { |
2480 |
/* MAC with load. */
|
2481 |
tmp = gen_lea(s, insn, OS_LONG); |
2482 |
addr = gen_new_qreg(QMODE_I32); |
2483 |
tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK); |
2484 |
/* Load the value now to ensure correct exception behavior.
|
2485 |
Perform writeback after reading the MAC inputs. */
|
2486 |
loadval = gen_load(s, OS_LONG, addr, 0);
|
2487 |
|
2488 |
acc ^= 1;
|
2489 |
rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12); |
2490 |
ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0); |
2491 |
} else {
|
2492 |
loadval = addr = NULL_QREG; |
2493 |
rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
2494 |
ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2495 |
} |
2496 |
|
2497 |
gen_mac_clear_flags(); |
2498 |
#if 0
|
2499 |
l1 = -1;
|
2500 |
/* Disabled because conditional branches clobber temporary vars. */
|
2501 |
if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
|
2502 |
/* Skip the multiply if we know we will ignore it. */
|
2503 |
l1 = gen_new_label();
|
2504 |
tmp = gen_new_qreg(QMODE_I32);
|
2505 |
tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
|
2506 |
gen_op_jmp_nz32(tmp, l1);
|
2507 |
}
|
2508 |
#endif
|
2509 |
|
2510 |
if ((ext & 0x0800) == 0) { |
2511 |
/* Word. */
|
2512 |
rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0); |
2513 |
ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0); |
2514 |
} |
2515 |
if (s->env->macsr & MACSR_FI) {
|
2516 |
gen_helper_macmulf(s->mactmp, cpu_env, rx, ry); |
2517 |
} else {
|
2518 |
if (s->env->macsr & MACSR_SU)
|
2519 |
gen_helper_macmuls(s->mactmp, cpu_env, rx, ry); |
2520 |
else
|
2521 |
gen_helper_macmulu(s->mactmp, cpu_env, rx, ry); |
2522 |
switch ((ext >> 9) & 3) { |
2523 |
case 1: |
2524 |
tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
|
2525 |
break;
|
2526 |
case 3: |
2527 |
tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
|
2528 |
break;
|
2529 |
} |
2530 |
} |
2531 |
|
2532 |
if (dual) {
|
2533 |
/* Save the overflow flag from the multiply. */
|
2534 |
saved_flags = gen_new_qreg(QMODE_I32); |
2535 |
tcg_gen_mov_i32(saved_flags, QREG_MACSR); |
2536 |
} else {
|
2537 |
saved_flags = NULL_QREG; |
2538 |
} |
2539 |
|
2540 |
#if 0
|
2541 |
/* Disabled because conditional branches clobber temporary vars. */
|
2542 |
if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
|
2543 |
/* Skip the accumulate if the value is already saturated. */
|
2544 |
l1 = gen_new_label();
|
2545 |
tmp = gen_new_qreg(QMODE_I32);
|
2546 |
gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
|
2547 |
gen_op_jmp_nz32(tmp, l1);
|
2548 |
}
|
2549 |
#endif
|
2550 |
|
2551 |
if (insn & 0x100) |
2552 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2553 |
else
|
2554 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2555 |
|
2556 |
if (s->env->macsr & MACSR_FI)
|
2557 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
2558 |
else if (s->env->macsr & MACSR_SU) |
2559 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
2560 |
else
|
2561 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
2562 |
|
2563 |
#if 0
|
2564 |
/* Disabled because conditional branches clobber temporary vars. */
|
2565 |
if (l1 != -1)
|
2566 |
gen_set_label(l1);
|
2567 |
#endif
|
2568 |
|
2569 |
if (dual) {
|
2570 |
/* Dual accumulate variant. */
|
2571 |
acc = (ext >> 2) & 3; |
2572 |
/* Restore the overflow flag from the multiplier. */
|
2573 |
tcg_gen_mov_i32(QREG_MACSR, saved_flags); |
2574 |
#if 0
|
2575 |
/* Disabled because conditional branches clobber temporary vars. */
|
2576 |
if ((s->env->macsr & MACSR_OMC) != 0) {
|
2577 |
/* Skip the accumulate if the value is already saturated. */
|
2578 |
l1 = gen_new_label();
|
2579 |
tmp = gen_new_qreg(QMODE_I32);
|
2580 |
gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
|
2581 |
gen_op_jmp_nz32(tmp, l1);
|
2582 |
}
|
2583 |
#endif
|
2584 |
if (ext & 2) |
2585 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2586 |
else
|
2587 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2588 |
if (s->env->macsr & MACSR_FI)
|
2589 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
2590 |
else if (s->env->macsr & MACSR_SU) |
2591 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
2592 |
else
|
2593 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
2594 |
#if 0
|
2595 |
/* Disabled because conditional branches clobber temporary vars. */
|
2596 |
if (l1 != -1)
|
2597 |
gen_set_label(l1);
|
2598 |
#endif
|
2599 |
} |
2600 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc)); |
2601 |
|
2602 |
if (insn & 0x30) { |
2603 |
TCGv rw; |
2604 |
rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
2605 |
tcg_gen_mov_i32(rw, loadval); |
2606 |
/* FIXME: Should address writeback happen with the masked or
|
2607 |
unmasked value? */
|
2608 |
switch ((insn >> 3) & 7) { |
2609 |
case 3: /* Post-increment. */ |
2610 |
tcg_gen_addi_i32(AREG(insn, 0), addr, 4); |
2611 |
break;
|
2612 |
case 4: /* Pre-decrement. */ |
2613 |
tcg_gen_mov_i32(AREG(insn, 0), addr);
|
2614 |
} |
2615 |
} |
2616 |
} |
2617 |
|
2618 |
DISAS_INSN(from_mac) |
2619 |
{ |
2620 |
TCGv rx; |
2621 |
TCGv acc; |
2622 |
int accnum;
|
2623 |
|
2624 |
rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2625 |
accnum = (insn >> 9) & 3; |
2626 |
acc = MACREG(accnum); |
2627 |
if (s->env->macsr & MACSR_FI) {
|
2628 |
gen_helper_get_macf(cpu_env, rx, acc); |
2629 |
} else if ((s->env->macsr & MACSR_OMC) == 0) { |
2630 |
tcg_gen_trunc_i64_i32(rx, acc); |
2631 |
} else if (s->env->macsr & MACSR_SU) { |
2632 |
gen_helper_get_macs(rx, acc); |
2633 |
} else {
|
2634 |
gen_helper_get_macu(rx, acc); |
2635 |
} |
2636 |
if (insn & 0x40) { |
2637 |
tcg_gen_movi_i64(acc, 0);
|
2638 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
2639 |
} |
2640 |
} |
2641 |
|
2642 |
DISAS_INSN(move_mac) |
2643 |
{ |
2644 |
/* FIXME: This can be done without a helper. */
|
2645 |
int src;
|
2646 |
TCGv dest; |
2647 |
src = insn & 3;
|
2648 |
dest = tcg_const_i32((insn >> 9) & 3); |
2649 |
gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src)); |
2650 |
gen_mac_clear_flags(); |
2651 |
gen_helper_mac_set_flags(cpu_env, dest); |
2652 |
} |
2653 |
|
2654 |
DISAS_INSN(from_macsr) |
2655 |
{ |
2656 |
TCGv reg; |
2657 |
|
2658 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2659 |
tcg_gen_mov_i32(reg, QREG_MACSR); |
2660 |
} |
2661 |
|
2662 |
DISAS_INSN(from_mask) |
2663 |
{ |
2664 |
TCGv reg; |
2665 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2666 |
tcg_gen_mov_i32(reg, QREG_MAC_MASK); |
2667 |
} |
2668 |
|
2669 |
DISAS_INSN(from_mext) |
2670 |
{ |
2671 |
TCGv reg; |
2672 |
TCGv acc; |
2673 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2674 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
2675 |
if (s->env->macsr & MACSR_FI)
|
2676 |
gen_helper_get_mac_extf(reg, cpu_env, acc); |
2677 |
else
|
2678 |
gen_helper_get_mac_exti(reg, cpu_env, acc); |
2679 |
} |
2680 |
|
2681 |
DISAS_INSN(macsr_to_ccr) |
2682 |
{ |
2683 |
tcg_gen_movi_i32(QREG_CC_X, 0);
|
2684 |
tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
|
2685 |
s->cc_op = CC_OP_FLAGS; |
2686 |
} |
2687 |
|
2688 |
DISAS_INSN(to_mac) |
2689 |
{ |
2690 |
TCGv acc; |
2691 |
TCGv val; |
2692 |
int accnum;
|
2693 |
accnum = (insn >> 9) & 3; |
2694 |
acc = MACREG(accnum); |
2695 |
SRC_EA(val, OS_LONG, 0, NULL); |
2696 |
if (s->env->macsr & MACSR_FI) {
|
2697 |
tcg_gen_ext_i32_i64(acc, val); |
2698 |
tcg_gen_shli_i64(acc, acc, 8);
|
2699 |
} else if (s->env->macsr & MACSR_SU) { |
2700 |
tcg_gen_ext_i32_i64(acc, val); |
2701 |
} else {
|
2702 |
tcg_gen_extu_i32_i64(acc, val); |
2703 |
} |
2704 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
2705 |
gen_mac_clear_flags(); |
2706 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum)); |
2707 |
} |
2708 |
|
2709 |
DISAS_INSN(to_macsr) |
2710 |
{ |
2711 |
TCGv val; |
2712 |
SRC_EA(val, OS_LONG, 0, NULL); |
2713 |
gen_helper_set_macsr(cpu_env, val); |
2714 |
gen_lookup_tb(s); |
2715 |
} |
2716 |
|
2717 |
DISAS_INSN(to_mask) |
2718 |
{ |
2719 |
TCGv val; |
2720 |
SRC_EA(val, OS_LONG, 0, NULL); |
2721 |
tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
|
2722 |
} |
2723 |
|
2724 |
DISAS_INSN(to_mext) |
2725 |
{ |
2726 |
TCGv val; |
2727 |
TCGv acc; |
2728 |
SRC_EA(val, OS_LONG, 0, NULL); |
2729 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
2730 |
if (s->env->macsr & MACSR_FI)
|
2731 |
gen_helper_set_mac_extf(cpu_env, val, acc); |
2732 |
else if (s->env->macsr & MACSR_SU) |
2733 |
gen_helper_set_mac_exts(cpu_env, val, acc); |
2734 |
else
|
2735 |
gen_helper_set_mac_extu(cpu_env, val, acc); |
2736 |
} |
2737 |
|
2738 |
static disas_proc opcode_table[65536]; |
2739 |
|
2740 |
static void |
2741 |
register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask) |
2742 |
{ |
2743 |
int i;
|
2744 |
int from;
|
2745 |
int to;
|
2746 |
|
2747 |
/* Sanity check. All set bits must be included in the mask. */
|
2748 |
if (opcode & ~mask) {
|
2749 |
fprintf(stderr, |
2750 |
"qemu internal error: bogus opcode definition %04x/%04x\n",
|
2751 |
opcode, mask); |
2752 |
abort(); |
2753 |
} |
2754 |
/* This could probably be cleverer. For now just optimize the case where
|
2755 |
the top bits are known. */
|
2756 |
/* Find the first zero bit in the mask. */
|
2757 |
i = 0x8000;
|
2758 |
while ((i & mask) != 0) |
2759 |
i >>= 1;
|
2760 |
/* Iterate over all combinations of this and lower bits. */
|
2761 |
if (i == 0) |
2762 |
i = 1;
|
2763 |
else
|
2764 |
i <<= 1;
|
2765 |
from = opcode & ~(i - 1);
|
2766 |
to = from + i; |
2767 |
for (i = from; i < to; i++) {
|
2768 |
if ((i & mask) == opcode)
|
2769 |
opcode_table[i] = proc; |
2770 |
} |
2771 |
} |
2772 |
|
2773 |
/* Register m68k opcode handlers. Order is important.
|
2774 |
Later insn override earlier ones. */
|
2775 |
void register_m68k_insns (CPUM68KState *env)
|
2776 |
{ |
2777 |
#define INSN(name, opcode, mask, feature) do { \ |
2778 |
if (m68k_feature(env, M68K_FEATURE_##feature)) \ |
2779 |
register_opcode(disas_##name, 0x##opcode, 0x##mask); \ |
2780 |
} while(0) |
2781 |
INSN(undef, 0000, 0000, CF_ISA_A); |
2782 |
INSN(arith_im, 0080, fff8, CF_ISA_A);
|
2783 |
INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
|
2784 |
INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
|
2785 |
INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
|
2786 |
INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
|
2787 |
INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
|
2788 |
INSN(arith_im, 0280, fff8, CF_ISA_A);
|
2789 |
INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
|
2790 |
INSN(arith_im, 0480, fff8, CF_ISA_A);
|
2791 |
INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
|
2792 |
INSN(arith_im, 0680, fff8, CF_ISA_A);
|
2793 |
INSN(bitop_im, 0800, ffc0, CF_ISA_A);
|
2794 |
INSN(bitop_im, 0840, ffc0, CF_ISA_A);
|
2795 |
INSN(bitop_im, 0880, ffc0, CF_ISA_A);
|
2796 |
INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
|
2797 |
INSN(arith_im, 0a80, fff8, CF_ISA_A);
|
2798 |
INSN(arith_im, 0c00, ff38, CF_ISA_A);
|
2799 |
INSN(move, 1000, f000, CF_ISA_A);
|
2800 |
INSN(move, 2000, f000, CF_ISA_A);
|
2801 |
INSN(move, 3000, f000, CF_ISA_A);
|
2802 |
INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC); |
2803 |
INSN(negx, 4080, fff8, CF_ISA_A);
|
2804 |
INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
|
2805 |
INSN(lea, 41c0, f1c0, CF_ISA_A);
|
2806 |
INSN(clr, 4200, ff00, CF_ISA_A);
|
2807 |
INSN(undef, 42c0, ffc0, CF_ISA_A);
|
2808 |
INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
|
2809 |
INSN(neg, 4480, fff8, CF_ISA_A);
|
2810 |
INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
|
2811 |
INSN(not, 4680, fff8, CF_ISA_A);
|
2812 |
INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
|
2813 |
INSN(pea, 4840, ffc0, CF_ISA_A);
|
2814 |
INSN(swap, 4840, fff8, CF_ISA_A);
|
2815 |
INSN(movem, 48c0, fbc0, CF_ISA_A);
|
2816 |
INSN(ext, 4880, fff8, CF_ISA_A);
|
2817 |
INSN(ext, 48c0, fff8, CF_ISA_A);
|
2818 |
INSN(ext, 49c0, fff8, CF_ISA_A);
|
2819 |
INSN(tst, 4a00, ff00, CF_ISA_A);
|
2820 |
INSN(tas, 4ac0, ffc0, CF_ISA_B);
|
2821 |
INSN(halt, 4ac8, ffff, CF_ISA_A);
|
2822 |
INSN(pulse, 4acc, ffff, CF_ISA_A);
|
2823 |
INSN(illegal, 4afc, ffff, CF_ISA_A);
|
2824 |
INSN(mull, 4c00, ffc0, CF_ISA_A);
|
2825 |
INSN(divl, 4c40, ffc0, CF_ISA_A);
|
2826 |
INSN(sats, 4c80, fff8, CF_ISA_B);
|
2827 |
INSN(trap, 4e40, fff0, CF_ISA_A);
|
2828 |
INSN(link, 4e50, fff8, CF_ISA_A);
|
2829 |
INSN(unlk, 4e58, fff8, CF_ISA_A);
|
2830 |
INSN(move_to_usp, 4e60, fff8, USP);
|
2831 |
INSN(move_from_usp, 4e68, fff8, USP);
|
2832 |
INSN(nop, 4e71, ffff, CF_ISA_A);
|
2833 |
INSN(stop, 4e72, ffff, CF_ISA_A);
|
2834 |
INSN(rte, 4e73, ffff, CF_ISA_A);
|
2835 |
INSN(rts, 4e75, ffff, CF_ISA_A);
|
2836 |
INSN(movec, 4e7b, ffff, CF_ISA_A);
|
2837 |
INSN(jump, 4e80, ffc0, CF_ISA_A);
|
2838 |
INSN(jump, 4ec0, ffc0, CF_ISA_A);
|
2839 |
INSN(addsubq, 5180, f1c0, CF_ISA_A);
|
2840 |
INSN(scc, 50c0, f0f8, CF_ISA_A);
|
2841 |
INSN(addsubq, 5080, f1c0, CF_ISA_A);
|
2842 |
INSN(tpf, 51f8, fff8, CF_ISA_A); |
2843 |
|
2844 |
/* Branch instructions. */
|
2845 |
INSN(branch, 6000, f000, CF_ISA_A);
|
2846 |
/* Disable long branch instructions, then add back the ones we want. */
|
2847 |
INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */ |
2848 |
INSN(branch, 60ff, f0ff, CF_ISA_B); |
2849 |
INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */ |
2850 |
INSN(branch, 60ff, ffff, BRAL); |
2851 |
|
2852 |
INSN(moveq, 7000, f100, CF_ISA_A);
|
2853 |
INSN(mvzs, 7100, f100, CF_ISA_B);
|
2854 |
INSN(or, 8000, f000, CF_ISA_A);
|
2855 |
INSN(divw, 80c0, f0c0, CF_ISA_A);
|
2856 |
INSN(addsub, 9000, f000, CF_ISA_A);
|
2857 |
INSN(subx, 9180, f1f8, CF_ISA_A);
|
2858 |
INSN(suba, 91c0, f1c0, CF_ISA_A);
|
2859 |
|
2860 |
INSN(undef_mac, a000, f000, CF_ISA_A); |
2861 |
INSN(mac, a000, f100, CF_EMAC); |
2862 |
INSN(from_mac, a180, f9b0, CF_EMAC); |
2863 |
INSN(move_mac, a110, f9fc, CF_EMAC); |
2864 |
INSN(from_macsr,a980, f9f0, CF_EMAC); |
2865 |
INSN(from_mask, ad80, fff0, CF_EMAC); |
2866 |
INSN(from_mext, ab80, fbf0, CF_EMAC); |
2867 |
INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC); |
2868 |
INSN(to_mac, a100, f9c0, CF_EMAC); |
2869 |
INSN(to_macsr, a900, ffc0, CF_EMAC); |
2870 |
INSN(to_mext, ab00, fbc0, CF_EMAC); |
2871 |
INSN(to_mask, ad00, ffc0, CF_EMAC); |
2872 |
|
2873 |
INSN(mov3q, a140, f1c0, CF_ISA_B); |
2874 |
INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
|
2875 |
INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
|
2876 |
INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
|
2877 |
INSN(cmp, b080, f1c0, CF_ISA_A); |
2878 |
INSN(cmpa, b1c0, f1c0, CF_ISA_A); |
2879 |
INSN(eor, b180, f1c0, CF_ISA_A); |
2880 |
INSN(and, c000, f000, CF_ISA_A); |
2881 |
INSN(mulw, c0c0, f0c0, CF_ISA_A); |
2882 |
INSN(addsub, d000, f000, CF_ISA_A); |
2883 |
INSN(addx, d180, f1f8, CF_ISA_A); |
2884 |
INSN(adda, d1c0, f1c0, CF_ISA_A); |
2885 |
INSN(shift_im, e080, f0f0, CF_ISA_A); |
2886 |
INSN(shift_reg, e0a0, f0f0, CF_ISA_A); |
2887 |
INSN(undef_fpu, f000, f000, CF_ISA_A); |
2888 |
INSN(fpu, f200, ffc0, CF_FPU); |
2889 |
INSN(fbcc, f280, ffc0, CF_FPU); |
2890 |
INSN(frestore, f340, ffc0, CF_FPU); |
2891 |
INSN(fsave, f340, ffc0, CF_FPU); |
2892 |
INSN(intouch, f340, ffc0, CF_ISA_A); |
2893 |
INSN(cpushl, f428, ff38, CF_ISA_A); |
2894 |
INSN(wddata, fb00, ff00, CF_ISA_A); |
2895 |
INSN(wdebug, fbc0, ffc0, CF_ISA_A); |
2896 |
#undef INSN
|
2897 |
} |
2898 |
|
2899 |
/* ??? Some of this implementation is not exception safe. We should always
|
2900 |
write back the result to memory before setting the condition codes. */
|
2901 |
static void disas_m68k_insn(CPUState * env, DisasContext *s) |
2902 |
{ |
2903 |
uint16_t insn; |
2904 |
|
2905 |
insn = lduw_code(s->pc); |
2906 |
s->pc += 2;
|
2907 |
|
2908 |
opcode_table[insn](s, insn); |
2909 |
} |
2910 |
|
2911 |
/* generate intermediate code for basic block 'tb'. */
|
2912 |
static inline int |
2913 |
gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, |
2914 |
int search_pc)
|
2915 |
{ |
2916 |
DisasContext dc1, *dc = &dc1; |
2917 |
uint16_t *gen_opc_end; |
2918 |
int j, lj;
|
2919 |
target_ulong pc_start; |
2920 |
int pc_offset;
|
2921 |
int last_cc_op;
|
2922 |
|
2923 |
/* generate intermediate code */
|
2924 |
pc_start = tb->pc; |
2925 |
|
2926 |
dc->tb = tb; |
2927 |
|
2928 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
2929 |
|
2930 |
dc->env = env; |
2931 |
dc->is_jmp = DISAS_NEXT; |
2932 |
dc->pc = pc_start; |
2933 |
dc->cc_op = CC_OP_DYNAMIC; |
2934 |
dc->singlestep_enabled = env->singlestep_enabled; |
2935 |
dc->fpcr = env->fpcr; |
2936 |
dc->user = (env->sr & SR_S) == 0;
|
2937 |
dc->is_mem = 0;
|
2938 |
dc->mactmp = NULL_QREG; |
2939 |
lj = -1;
|
2940 |
do {
|
2941 |
pc_offset = dc->pc - pc_start; |
2942 |
gen_throws_exception = NULL;
|
2943 |
if (env->nb_breakpoints > 0) { |
2944 |
for(j = 0; j < env->nb_breakpoints; j++) { |
2945 |
if (env->breakpoints[j] == dc->pc) {
|
2946 |
gen_exception(dc, dc->pc, EXCP_DEBUG); |
2947 |
dc->is_jmp = DISAS_JUMP; |
2948 |
break;
|
2949 |
} |
2950 |
} |
2951 |
if (dc->is_jmp)
|
2952 |
break;
|
2953 |
} |
2954 |
if (search_pc) {
|
2955 |
j = gen_opc_ptr - gen_opc_buf; |
2956 |
if (lj < j) {
|
2957 |
lj++; |
2958 |
while (lj < j)
|
2959 |
gen_opc_instr_start[lj++] = 0;
|
2960 |
} |
2961 |
gen_opc_pc[lj] = dc->pc; |
2962 |
gen_opc_instr_start[lj] = 1;
|
2963 |
} |
2964 |
last_cc_op = dc->cc_op; |
2965 |
dc->insn_pc = dc->pc; |
2966 |
disas_m68k_insn(env, dc); |
2967 |
|
2968 |
/* Terminate the TB on memory ops if watchpoints are present. */
|
2969 |
/* FIXME: This should be replacd by the deterministic execution
|
2970 |
* IRQ raising bits. */
|
2971 |
if (dc->is_mem && env->nb_watchpoints)
|
2972 |
break;
|
2973 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
|
2974 |
!env->singlestep_enabled && |
2975 |
(pc_offset) < (TARGET_PAGE_SIZE - 32));
|
2976 |
|
2977 |
if (__builtin_expect(env->singlestep_enabled, 0)) { |
2978 |
/* Make sure the pc is updated, and raise a debug exception. */
|
2979 |
if (!dc->is_jmp) {
|
2980 |
gen_flush_cc_op(dc); |
2981 |
tcg_gen_movi_i32(QREG_PC, dc->pc); |
2982 |
} |
2983 |
gen_helper_raise_exception(tcg_const_i32(EXCP_DEBUG)); |
2984 |
} else {
|
2985 |
switch(dc->is_jmp) {
|
2986 |
case DISAS_NEXT:
|
2987 |
gen_flush_cc_op(dc); |
2988 |
gen_jmp_tb(dc, 0, dc->pc);
|
2989 |
break;
|
2990 |
default:
|
2991 |
case DISAS_JUMP:
|
2992 |
case DISAS_UPDATE:
|
2993 |
gen_flush_cc_op(dc); |
2994 |
/* indicate that the hash table must be used to find the next TB */
|
2995 |
tcg_gen_exit_tb(0);
|
2996 |
break;
|
2997 |
case DISAS_TB_JUMP:
|
2998 |
/* nothing more to generate */
|
2999 |
break;
|
3000 |
} |
3001 |
} |
3002 |
*gen_opc_ptr = INDEX_op_end; |
3003 |
|
3004 |
#ifdef DEBUG_DISAS
|
3005 |
if (loglevel & CPU_LOG_TB_IN_ASM) {
|
3006 |
fprintf(logfile, "----------------\n");
|
3007 |
fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
|
3008 |
target_disas(logfile, pc_start, dc->pc - pc_start, 0);
|
3009 |
fprintf(logfile, "\n");
|
3010 |
} |
3011 |
#endif
|
3012 |
if (search_pc) {
|
3013 |
j = gen_opc_ptr - gen_opc_buf; |
3014 |
lj++; |
3015 |
while (lj <= j)
|
3016 |
gen_opc_instr_start[lj++] = 0;
|
3017 |
} else {
|
3018 |
tb->size = dc->pc - pc_start; |
3019 |
} |
3020 |
|
3021 |
//optimize_flags();
|
3022 |
//expand_target_qops();
|
3023 |
return 0; |
3024 |
} |
3025 |
|
3026 |
int gen_intermediate_code(CPUState *env, TranslationBlock *tb)
|
3027 |
{ |
3028 |
return gen_intermediate_code_internal(env, tb, 0); |
3029 |
} |
3030 |
|
3031 |
int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
|
3032 |
{ |
3033 |
return gen_intermediate_code_internal(env, tb, 1); |
3034 |
} |
3035 |
|
3036 |
void cpu_dump_state(CPUState *env, FILE *f,
|
3037 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
3038 |
int flags)
|
3039 |
{ |
3040 |
int i;
|
3041 |
uint16_t sr; |
3042 |
CPU_DoubleU u; |
3043 |
for (i = 0; i < 8; i++) |
3044 |
{ |
3045 |
u.d = env->fregs[i]; |
3046 |
cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
|
3047 |
i, env->dregs[i], i, env->aregs[i], |
3048 |
i, u.l.upper, u.l.lower, *(double *)&u.d);
|
3049 |
} |
3050 |
cpu_fprintf (f, "PC = %08x ", env->pc);
|
3051 |
sr = env->sr; |
3052 |
cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-', |
3053 |
(sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-', |
3054 |
(sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-'); |
3055 |
cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result); |
3056 |
} |
3057 |
|
3058 |
void gen_pc_load(CPUState *env, TranslationBlock *tb,
|
3059 |
unsigned long searched_pc, int pc_pos, void *puc) |
3060 |
{ |
3061 |
env->pc = gen_opc_pc[pc_pos]; |
3062 |
} |