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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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 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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#include "qemu-log.h" |
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#include "helpers.h" |
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#define GEN_HELPER 1 |
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#include "helpers.h" |
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//#define DEBUG_DISPATCH 1
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/* Fake floating point. */
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#define tcg_gen_mov_f64 tcg_gen_mov_i64
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#define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
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#define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
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#define DEFO32(name, offset) static TCGv QREG_##name; |
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#define DEFO64(name, offset) static TCGv_i64 QREG_##name; |
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#define DEFF64(name, offset) static TCGv_i64 QREG_##name; |
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#include "qregs.def" |
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#undef DEFO32
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#undef DEFO64
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#undef DEFF64
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static TCGv_ptr cpu_env;
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static char cpu_reg_names[3*8*3 + 5*4]; |
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static TCGv cpu_dregs[8]; |
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static TCGv cpu_aregs[8]; |
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static TCGv_i64 cpu_fregs[8]; |
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static TCGv_i64 cpu_macc[4]; |
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#define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7] |
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#define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7] |
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#define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7] |
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#define MACREG(acc) cpu_macc[acc]
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#define QREG_SP cpu_aregs[7] |
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static TCGv NULL_QREG;
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#define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
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/* Used to distinguish stores from bad addressing modes. */
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static TCGv store_dummy;
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#include "gen-icount.h" |
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void m68k_tcg_init(void) |
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{ |
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char *p;
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int i;
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#define DEFO32(name, offset) QREG_##name = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUState, offset), #name); |
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#define DEFO64(name, offset) QREG_##name = tcg_global_mem_new_i64(TCG_AREG0, offsetof(CPUState, offset), #name); |
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#define DEFF64(name, offset) DEFO64(name, offset)
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#include "qregs.def" |
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#undef DEFO32
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#undef DEFO64
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#undef DEFF64
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cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
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p = cpu_reg_names; |
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for (i = 0; i < 8; i++) { |
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sprintf(p, "D%d", i);
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cpu_dregs[i] = tcg_global_mem_new(TCG_AREG0, |
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offsetof(CPUM68KState, dregs[i]), p); |
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p += 3;
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sprintf(p, "A%d", i);
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cpu_aregs[i] = tcg_global_mem_new(TCG_AREG0, |
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offsetof(CPUM68KState, aregs[i]), p); |
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p += 3;
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sprintf(p, "F%d", i);
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cpu_fregs[i] = tcg_global_mem_new_i64(TCG_AREG0, |
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offsetof(CPUM68KState, fregs[i]), p); |
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p += 3;
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} |
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for (i = 0; i < 4; i++) { |
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sprintf(p, "ACC%d", i);
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cpu_macc[i] = tcg_global_mem_new_i64(TCG_AREG0, |
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offsetof(CPUM68KState, macc[i]), p); |
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p += 5;
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} |
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NULL_QREG = tcg_global_mem_new(TCG_AREG0, -4, "NULL"); |
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store_dummy = tcg_global_mem_new(TCG_AREG0, -8, "NULL"); |
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#define GEN_HELPER 2 |
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#include "helpers.h" |
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} |
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static inline void qemu_assert(int cond, const char *msg) |
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{ |
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if (!cond) {
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fprintf (stderr, "badness: %s\n", msg);
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abort(); |
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} |
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} |
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/* internal defines */
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typedef struct DisasContext { |
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CPUM68KState *env; |
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target_ulong insn_pc; /* Start of the current instruction. */
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target_ulong pc; |
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int is_jmp;
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int cc_op;
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int user;
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uint32_t fpcr; |
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struct TranslationBlock *tb;
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int singlestep_enabled;
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int is_mem;
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TCGv_i64 mactmp; |
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int done_mac;
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} DisasContext; |
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#define DISAS_JUMP_NEXT 4 |
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#if defined(CONFIG_USER_ONLY)
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#define IS_USER(s) 1 |
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#else
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#define IS_USER(s) s->user
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#endif
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/* XXX: move that elsewhere */
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/* ??? Fix exceptions. */
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static void *gen_throws_exception; |
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#define gen_last_qop NULL |
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#define OS_BYTE 0 |
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#define OS_WORD 1 |
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#define OS_LONG 2 |
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#define OS_SINGLE 4 |
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#define OS_DOUBLE 5 |
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typedef void (*disas_proc)(DisasContext *, uint16_t); |
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#ifdef DEBUG_DISPATCH
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#define DISAS_INSN(name) \
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static void real_disas_##name (DisasContext *s, uint16_t insn); \ |
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static void disas_##name (DisasContext *s, uint16_t insn) { \ |
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qemu_log("Dispatch " #name "\n"); \ |
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real_disas_##name(s, insn); } \ |
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static void real_disas_##name (DisasContext *s, uint16_t insn) |
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#else
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#define DISAS_INSN(name) \
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static void disas_##name (DisasContext *s, uint16_t insn) |
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#endif
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/* FIXME: Remove this. */
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#define gen_im32(val) tcg_const_i32(val)
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/* Generate a load from the specified address. Narrow values are
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sign extended to full register width. */
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static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign) |
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{ |
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TCGv tmp; |
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int index = IS_USER(s);
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s->is_mem = 1;
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tmp = tcg_temp_new_i32(); |
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switch(opsize) {
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case OS_BYTE:
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if (sign)
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tcg_gen_qemu_ld8s(tmp, addr, index); |
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else
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tcg_gen_qemu_ld8u(tmp, addr, index); |
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break;
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case OS_WORD:
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if (sign)
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tcg_gen_qemu_ld16s(tmp, addr, index); |
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else
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tcg_gen_qemu_ld16u(tmp, addr, index); |
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break;
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case OS_LONG:
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case OS_SINGLE:
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tcg_gen_qemu_ld32u(tmp, addr, index); |
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break;
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default:
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qemu_assert(0, "bad load size"); |
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} |
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gen_throws_exception = gen_last_qop; |
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return tmp;
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} |
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static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr) |
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{ |
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TCGv_i64 tmp; |
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int index = IS_USER(s);
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s->is_mem = 1;
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tmp = tcg_temp_new_i64(); |
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tcg_gen_qemu_ldf64(tmp, addr, index); |
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gen_throws_exception = gen_last_qop; |
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return tmp;
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} |
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/* Generate a store. */
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static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val) |
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{ |
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int index = IS_USER(s);
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s->is_mem = 1;
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switch(opsize) {
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case OS_BYTE:
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tcg_gen_qemu_st8(val, addr, index); |
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break;
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case OS_WORD:
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tcg_gen_qemu_st16(val, addr, index); |
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break;
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case OS_LONG:
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case OS_SINGLE:
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tcg_gen_qemu_st32(val, addr, index); |
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break;
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default:
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qemu_assert(0, "bad store size"); |
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} |
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gen_throws_exception = gen_last_qop; |
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} |
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static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val) |
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{ |
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int index = IS_USER(s);
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s->is_mem = 1;
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tcg_gen_qemu_stf64(val, addr, index); |
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gen_throws_exception = gen_last_qop; |
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} |
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typedef enum { |
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EA_STORE, |
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EA_LOADU, |
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EA_LOADS |
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} ea_what; |
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/* Generate an unsigned load if VAL is 0 a signed load if val is -1,
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otherwise generate a store. */
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static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val, |
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ea_what what) |
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{ |
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if (what == EA_STORE) {
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gen_store(s, opsize, addr, val); |
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return store_dummy;
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} else {
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return gen_load(s, opsize, addr, what == EA_LOADS);
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} |
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} |
270 |
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/* Read a 32-bit immediate constant. */
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static inline uint32_t read_im32(DisasContext *s) |
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{ |
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uint32_t im; |
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im = ((uint32_t)lduw_code(s->pc)) << 16;
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s->pc += 2;
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im |= lduw_code(s->pc); |
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s->pc += 2;
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return im;
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} |
281 |
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/* Calculate and address index. */
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static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
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{ |
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TCGv add; |
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int scale;
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add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12); |
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if ((ext & 0x800) == 0) { |
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tcg_gen_ext16s_i32(tmp, add); |
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add = tmp; |
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} |
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scale = (ext >> 9) & 3; |
294 |
if (scale != 0) { |
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tcg_gen_shli_i32(tmp, add, scale); |
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add = tmp; |
297 |
} |
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return add;
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} |
300 |
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/* Handle a base + index + displacement effective addresss.
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A NULL_QREG base means pc-relative. */
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static TCGv gen_lea_indexed(DisasContext *s, int opsize, TCGv base) |
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{ |
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uint32_t offset; |
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uint16_t ext; |
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TCGv add; |
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TCGv tmp; |
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uint32_t bd, od; |
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offset = s->pc; |
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ext = lduw_code(s->pc); |
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s->pc += 2;
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if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX)) |
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return NULL_QREG;
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if (ext & 0x100) { |
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/* full extension word format */
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if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
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return NULL_QREG;
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if ((ext & 0x30) > 0x10) { |
324 |
/* base displacement */
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if ((ext & 0x30) == 0x20) { |
326 |
bd = (int16_t)lduw_code(s->pc); |
327 |
s->pc += 2;
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} else {
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bd = read_im32(s); |
330 |
} |
331 |
} else {
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bd = 0;
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} |
334 |
tmp = tcg_temp_new(); |
335 |
if ((ext & 0x44) == 0) { |
336 |
/* pre-index */
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add = gen_addr_index(ext, tmp); |
338 |
} else {
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add = NULL_QREG; |
340 |
} |
341 |
if ((ext & 0x80) == 0) { |
342 |
/* base not suppressed */
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343 |
if (IS_NULL_QREG(base)) {
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base = gen_im32(offset + bd); |
345 |
bd = 0;
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} |
347 |
if (!IS_NULL_QREG(add)) {
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348 |
tcg_gen_add_i32(tmp, add, base); |
349 |
add = tmp; |
350 |
} else {
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351 |
add = base; |
352 |
} |
353 |
} |
354 |
if (!IS_NULL_QREG(add)) {
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355 |
if (bd != 0) { |
356 |
tcg_gen_addi_i32(tmp, add, bd); |
357 |
add = tmp; |
358 |
} |
359 |
} else {
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360 |
add = gen_im32(bd); |
361 |
} |
362 |
if ((ext & 3) != 0) { |
363 |
/* memory indirect */
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364 |
base = gen_load(s, OS_LONG, add, 0);
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365 |
if ((ext & 0x44) == 4) { |
366 |
add = gen_addr_index(ext, tmp); |
367 |
tcg_gen_add_i32(tmp, add, base); |
368 |
add = tmp; |
369 |
} else {
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370 |
add = base; |
371 |
} |
372 |
if ((ext & 3) > 1) { |
373 |
/* outer displacement */
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374 |
if ((ext & 3) == 2) { |
375 |
od = (int16_t)lduw_code(s->pc); |
376 |
s->pc += 2;
|
377 |
} else {
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378 |
od = read_im32(s); |
379 |
} |
380 |
} else {
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381 |
od = 0;
|
382 |
} |
383 |
if (od != 0) { |
384 |
tcg_gen_addi_i32(tmp, add, od); |
385 |
add = tmp; |
386 |
} |
387 |
} |
388 |
} else {
|
389 |
/* brief extension word format */
|
390 |
tmp = tcg_temp_new(); |
391 |
add = gen_addr_index(ext, tmp); |
392 |
if (!IS_NULL_QREG(base)) {
|
393 |
tcg_gen_add_i32(tmp, add, base); |
394 |
if ((int8_t)ext)
|
395 |
tcg_gen_addi_i32(tmp, tmp, (int8_t)ext); |
396 |
} else {
|
397 |
tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext); |
398 |
} |
399 |
add = tmp; |
400 |
} |
401 |
return add;
|
402 |
} |
403 |
|
404 |
/* Update the CPU env CC_OP state. */
|
405 |
static inline void gen_flush_cc_op(DisasContext *s) |
406 |
{ |
407 |
if (s->cc_op != CC_OP_DYNAMIC)
|
408 |
tcg_gen_movi_i32(QREG_CC_OP, s->cc_op); |
409 |
} |
410 |
|
411 |
/* Evaluate all the CC flags. */
|
412 |
static inline void gen_flush_flags(DisasContext *s) |
413 |
{ |
414 |
if (s->cc_op == CC_OP_FLAGS)
|
415 |
return;
|
416 |
gen_flush_cc_op(s); |
417 |
gen_helper_flush_flags(cpu_env, QREG_CC_OP); |
418 |
s->cc_op = CC_OP_FLAGS; |
419 |
} |
420 |
|
421 |
static void gen_logic_cc(DisasContext *s, TCGv val) |
422 |
{ |
423 |
tcg_gen_mov_i32(QREG_CC_DEST, val); |
424 |
s->cc_op = CC_OP_LOGIC; |
425 |
} |
426 |
|
427 |
static void gen_update_cc_add(TCGv dest, TCGv src) |
428 |
{ |
429 |
tcg_gen_mov_i32(QREG_CC_DEST, dest); |
430 |
tcg_gen_mov_i32(QREG_CC_SRC, src); |
431 |
} |
432 |
|
433 |
static inline int opsize_bytes(int opsize) |
434 |
{ |
435 |
switch (opsize) {
|
436 |
case OS_BYTE: return 1; |
437 |
case OS_WORD: return 2; |
438 |
case OS_LONG: return 4; |
439 |
case OS_SINGLE: return 4; |
440 |
case OS_DOUBLE: return 8; |
441 |
default:
|
442 |
qemu_assert(0, "bad operand size"); |
443 |
return 0; |
444 |
} |
445 |
} |
446 |
|
447 |
/* Assign value to a register. If the width is less than the register width
|
448 |
only the low part of the register is set. */
|
449 |
static void gen_partset_reg(int opsize, TCGv reg, TCGv val) |
450 |
{ |
451 |
TCGv tmp; |
452 |
switch (opsize) {
|
453 |
case OS_BYTE:
|
454 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
455 |
tmp = tcg_temp_new(); |
456 |
tcg_gen_ext8u_i32(tmp, val); |
457 |
tcg_gen_or_i32(reg, reg, tmp); |
458 |
break;
|
459 |
case OS_WORD:
|
460 |
tcg_gen_andi_i32(reg, reg, 0xffff0000);
|
461 |
tmp = tcg_temp_new(); |
462 |
tcg_gen_ext16u_i32(tmp, val); |
463 |
tcg_gen_or_i32(reg, reg, tmp); |
464 |
break;
|
465 |
case OS_LONG:
|
466 |
case OS_SINGLE:
|
467 |
tcg_gen_mov_i32(reg, val); |
468 |
break;
|
469 |
default:
|
470 |
qemu_assert(0, "Bad operand size"); |
471 |
break;
|
472 |
} |
473 |
} |
474 |
|
475 |
/* Sign or zero extend a value. */
|
476 |
static inline TCGv gen_extend(TCGv val, int opsize, int sign) |
477 |
{ |
478 |
TCGv tmp; |
479 |
|
480 |
switch (opsize) {
|
481 |
case OS_BYTE:
|
482 |
tmp = tcg_temp_new(); |
483 |
if (sign)
|
484 |
tcg_gen_ext8s_i32(tmp, val); |
485 |
else
|
486 |
tcg_gen_ext8u_i32(tmp, val); |
487 |
break;
|
488 |
case OS_WORD:
|
489 |
tmp = tcg_temp_new(); |
490 |
if (sign)
|
491 |
tcg_gen_ext16s_i32(tmp, val); |
492 |
else
|
493 |
tcg_gen_ext16u_i32(tmp, val); |
494 |
break;
|
495 |
case OS_LONG:
|
496 |
case OS_SINGLE:
|
497 |
tmp = val; |
498 |
break;
|
499 |
default:
|
500 |
qemu_assert(0, "Bad operand size"); |
501 |
} |
502 |
return tmp;
|
503 |
} |
504 |
|
505 |
/* Generate code for an "effective address". Does not adjust the base
|
506 |
register for autoincrement addressing modes. */
|
507 |
static TCGv gen_lea(DisasContext *s, uint16_t insn, int opsize) |
508 |
{ |
509 |
TCGv reg; |
510 |
TCGv tmp; |
511 |
uint16_t ext; |
512 |
uint32_t offset; |
513 |
|
514 |
switch ((insn >> 3) & 7) { |
515 |
case 0: /* Data register direct. */ |
516 |
case 1: /* Address register direct. */ |
517 |
return NULL_QREG;
|
518 |
case 2: /* Indirect register */ |
519 |
case 3: /* Indirect postincrement. */ |
520 |
return AREG(insn, 0); |
521 |
case 4: /* Indirect predecrememnt. */ |
522 |
reg = AREG(insn, 0);
|
523 |
tmp = tcg_temp_new(); |
524 |
tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize)); |
525 |
return tmp;
|
526 |
case 5: /* Indirect displacement. */ |
527 |
reg = AREG(insn, 0);
|
528 |
tmp = tcg_temp_new(); |
529 |
ext = lduw_code(s->pc); |
530 |
s->pc += 2;
|
531 |
tcg_gen_addi_i32(tmp, reg, (int16_t)ext); |
532 |
return tmp;
|
533 |
case 6: /* Indirect index + displacement. */ |
534 |
reg = AREG(insn, 0);
|
535 |
return gen_lea_indexed(s, opsize, reg);
|
536 |
case 7: /* Other */ |
537 |
switch (insn & 7) { |
538 |
case 0: /* Absolute short. */ |
539 |
offset = ldsw_code(s->pc); |
540 |
s->pc += 2;
|
541 |
return gen_im32(offset);
|
542 |
case 1: /* Absolute long. */ |
543 |
offset = read_im32(s); |
544 |
return gen_im32(offset);
|
545 |
case 2: /* pc displacement */ |
546 |
tmp = tcg_temp_new(); |
547 |
offset = s->pc; |
548 |
offset += ldsw_code(s->pc); |
549 |
s->pc += 2;
|
550 |
return gen_im32(offset);
|
551 |
case 3: /* pc index+displacement. */ |
552 |
return gen_lea_indexed(s, opsize, NULL_QREG);
|
553 |
case 4: /* Immediate. */ |
554 |
default:
|
555 |
return NULL_QREG;
|
556 |
} |
557 |
} |
558 |
/* Should never happen. */
|
559 |
return NULL_QREG;
|
560 |
} |
561 |
|
562 |
/* Helper function for gen_ea. Reuse the computed address between the
|
563 |
for read/write operands. */
|
564 |
static inline TCGv gen_ea_once(DisasContext *s, uint16_t insn, int opsize, |
565 |
TCGv val, TCGv *addrp, ea_what what) |
566 |
{ |
567 |
TCGv tmp; |
568 |
|
569 |
if (addrp && what == EA_STORE) {
|
570 |
tmp = *addrp; |
571 |
} else {
|
572 |
tmp = gen_lea(s, insn, opsize); |
573 |
if (IS_NULL_QREG(tmp))
|
574 |
return tmp;
|
575 |
if (addrp)
|
576 |
*addrp = tmp; |
577 |
} |
578 |
return gen_ldst(s, opsize, tmp, val, what);
|
579 |
} |
580 |
|
581 |
/* Generate code to load/store a value ito/from an EA. If VAL > 0 this is
|
582 |
a write otherwise it is a read (0 == sign extend, -1 == zero extend).
|
583 |
ADDRP is non-null for readwrite operands. */
|
584 |
static TCGv gen_ea(DisasContext *s, uint16_t insn, int opsize, TCGv val, |
585 |
TCGv *addrp, ea_what what) |
586 |
{ |
587 |
TCGv reg; |
588 |
TCGv result; |
589 |
uint32_t offset; |
590 |
|
591 |
switch ((insn >> 3) & 7) { |
592 |
case 0: /* Data register direct. */ |
593 |
reg = DREG(insn, 0);
|
594 |
if (what == EA_STORE) {
|
595 |
gen_partset_reg(opsize, reg, val); |
596 |
return store_dummy;
|
597 |
} else {
|
598 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
599 |
} |
600 |
case 1: /* Address register direct. */ |
601 |
reg = AREG(insn, 0);
|
602 |
if (what == EA_STORE) {
|
603 |
tcg_gen_mov_i32(reg, val); |
604 |
return store_dummy;
|
605 |
} else {
|
606 |
return gen_extend(reg, opsize, what == EA_LOADS);
|
607 |
} |
608 |
case 2: /* Indirect register */ |
609 |
reg = AREG(insn, 0);
|
610 |
return gen_ldst(s, opsize, reg, val, what);
|
611 |
case 3: /* Indirect postincrement. */ |
612 |
reg = AREG(insn, 0);
|
613 |
result = gen_ldst(s, opsize, reg, val, what); |
614 |
/* ??? This is not exception safe. The instruction may still
|
615 |
fault after this point. */
|
616 |
if (what == EA_STORE || !addrp)
|
617 |
tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize)); |
618 |
return result;
|
619 |
case 4: /* Indirect predecrememnt. */ |
620 |
{ |
621 |
TCGv tmp; |
622 |
if (addrp && what == EA_STORE) {
|
623 |
tmp = *addrp; |
624 |
} else {
|
625 |
tmp = gen_lea(s, insn, opsize); |
626 |
if (IS_NULL_QREG(tmp))
|
627 |
return tmp;
|
628 |
if (addrp)
|
629 |
*addrp = tmp; |
630 |
} |
631 |
result = gen_ldst(s, opsize, tmp, val, what); |
632 |
/* ??? This is not exception safe. The instruction may still
|
633 |
fault after this point. */
|
634 |
if (what == EA_STORE || !addrp) {
|
635 |
reg = AREG(insn, 0);
|
636 |
tcg_gen_mov_i32(reg, tmp); |
637 |
} |
638 |
} |
639 |
return result;
|
640 |
case 5: /* Indirect displacement. */ |
641 |
case 6: /* Indirect index + displacement. */ |
642 |
return gen_ea_once(s, insn, opsize, val, addrp, what);
|
643 |
case 7: /* Other */ |
644 |
switch (insn & 7) { |
645 |
case 0: /* Absolute short. */ |
646 |
case 1: /* Absolute long. */ |
647 |
case 2: /* pc displacement */ |
648 |
case 3: /* pc index+displacement. */ |
649 |
return gen_ea_once(s, insn, opsize, val, addrp, what);
|
650 |
case 4: /* Immediate. */ |
651 |
/* Sign extend values for consistency. */
|
652 |
switch (opsize) {
|
653 |
case OS_BYTE:
|
654 |
if (what == EA_LOADS)
|
655 |
offset = ldsb_code(s->pc + 1);
|
656 |
else
|
657 |
offset = ldub_code(s->pc + 1);
|
658 |
s->pc += 2;
|
659 |
break;
|
660 |
case OS_WORD:
|
661 |
if (what == EA_LOADS)
|
662 |
offset = ldsw_code(s->pc); |
663 |
else
|
664 |
offset = lduw_code(s->pc); |
665 |
s->pc += 2;
|
666 |
break;
|
667 |
case OS_LONG:
|
668 |
offset = read_im32(s); |
669 |
break;
|
670 |
default:
|
671 |
qemu_assert(0, "Bad immediate operand"); |
672 |
} |
673 |
return tcg_const_i32(offset);
|
674 |
default:
|
675 |
return NULL_QREG;
|
676 |
} |
677 |
} |
678 |
/* Should never happen. */
|
679 |
return NULL_QREG;
|
680 |
} |
681 |
|
682 |
/* This generates a conditional branch, clobbering all temporaries. */
|
683 |
static void gen_jmpcc(DisasContext *s, int cond, int l1) |
684 |
{ |
685 |
TCGv tmp; |
686 |
|
687 |
/* TODO: Optimize compare/branch pairs rather than always flushing
|
688 |
flag state to CC_OP_FLAGS. */
|
689 |
gen_flush_flags(s); |
690 |
switch (cond) {
|
691 |
case 0: /* T */ |
692 |
tcg_gen_br(l1); |
693 |
break;
|
694 |
case 1: /* F */ |
695 |
break;
|
696 |
case 2: /* HI (!C && !Z) */ |
697 |
tmp = tcg_temp_new(); |
698 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
699 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
700 |
break;
|
701 |
case 3: /* LS (C || Z) */ |
702 |
tmp = tcg_temp_new(); |
703 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); |
704 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
705 |
break;
|
706 |
case 4: /* CC (!C) */ |
707 |
tmp = tcg_temp_new(); |
708 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
709 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
710 |
break;
|
711 |
case 5: /* CS (C) */ |
712 |
tmp = tcg_temp_new(); |
713 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); |
714 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
715 |
break;
|
716 |
case 6: /* NE (!Z) */ |
717 |
tmp = tcg_temp_new(); |
718 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
719 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
720 |
break;
|
721 |
case 7: /* EQ (Z) */ |
722 |
tmp = tcg_temp_new(); |
723 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); |
724 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
725 |
break;
|
726 |
case 8: /* VC (!V) */ |
727 |
tmp = tcg_temp_new(); |
728 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
729 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
730 |
break;
|
731 |
case 9: /* VS (V) */ |
732 |
tmp = tcg_temp_new(); |
733 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); |
734 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
735 |
break;
|
736 |
case 10: /* PL (!N) */ |
737 |
tmp = tcg_temp_new(); |
738 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
739 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
740 |
break;
|
741 |
case 11: /* MI (N) */ |
742 |
tmp = tcg_temp_new(); |
743 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
744 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
745 |
break;
|
746 |
case 12: /* GE (!(N ^ V)) */ |
747 |
tmp = tcg_temp_new(); |
748 |
assert(CCF_V == (CCF_N >> 2));
|
749 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
750 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
751 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
752 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
753 |
break;
|
754 |
case 13: /* LT (N ^ V) */ |
755 |
tmp = tcg_temp_new(); |
756 |
assert(CCF_V == (CCF_N >> 2));
|
757 |
tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
|
758 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
759 |
tcg_gen_andi_i32(tmp, tmp, CCF_V); |
760 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
761 |
break;
|
762 |
case 14: /* GT (!(Z || (N ^ V))) */ |
763 |
tmp = tcg_temp_new(); |
764 |
assert(CCF_V == (CCF_N >> 2));
|
765 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
766 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
767 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
768 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
769 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
|
770 |
break;
|
771 |
case 15: /* LE (Z || (N ^ V)) */ |
772 |
tmp = tcg_temp_new(); |
773 |
assert(CCF_V == (CCF_N >> 2));
|
774 |
tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); |
775 |
tcg_gen_shri_i32(tmp, tmp, 2);
|
776 |
tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); |
777 |
tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); |
778 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
|
779 |
break;
|
780 |
default:
|
781 |
/* Should ever happen. */
|
782 |
abort(); |
783 |
} |
784 |
} |
785 |
|
786 |
DISAS_INSN(scc) |
787 |
{ |
788 |
int l1;
|
789 |
int cond;
|
790 |
TCGv reg; |
791 |
|
792 |
l1 = gen_new_label(); |
793 |
cond = (insn >> 8) & 0xf; |
794 |
reg = DREG(insn, 0);
|
795 |
tcg_gen_andi_i32(reg, reg, 0xffffff00);
|
796 |
/* This is safe because we modify the reg directly, with no other values
|
797 |
live. */
|
798 |
gen_jmpcc(s, cond ^ 1, l1);
|
799 |
tcg_gen_ori_i32(reg, reg, 0xff);
|
800 |
gen_set_label(l1); |
801 |
} |
802 |
|
803 |
/* Force a TB lookup after an instruction that changes the CPU state. */
|
804 |
static void gen_lookup_tb(DisasContext *s) |
805 |
{ |
806 |
gen_flush_cc_op(s); |
807 |
tcg_gen_movi_i32(QREG_PC, s->pc); |
808 |
s->is_jmp = DISAS_UPDATE; |
809 |
} |
810 |
|
811 |
/* Generate a jump to an immediate address. */
|
812 |
static void gen_jmp_im(DisasContext *s, uint32_t dest) |
813 |
{ |
814 |
gen_flush_cc_op(s); |
815 |
tcg_gen_movi_i32(QREG_PC, dest); |
816 |
s->is_jmp = DISAS_JUMP; |
817 |
} |
818 |
|
819 |
/* Generate a jump to the address in qreg DEST. */
|
820 |
static void gen_jmp(DisasContext *s, TCGv dest) |
821 |
{ |
822 |
gen_flush_cc_op(s); |
823 |
tcg_gen_mov_i32(QREG_PC, dest); |
824 |
s->is_jmp = DISAS_JUMP; |
825 |
} |
826 |
|
827 |
static void gen_exception(DisasContext *s, uint32_t where, int nr) |
828 |
{ |
829 |
gen_flush_cc_op(s); |
830 |
gen_jmp_im(s, where); |
831 |
gen_helper_raise_exception(tcg_const_i32(nr)); |
832 |
} |
833 |
|
834 |
static inline void gen_addr_fault(DisasContext *s) |
835 |
{ |
836 |
gen_exception(s, s->insn_pc, EXCP_ADDRESS); |
837 |
} |
838 |
|
839 |
#define SRC_EA(result, opsize, op_sign, addrp) do { \ |
840 |
result = gen_ea(s, insn, opsize, NULL_QREG, addrp, op_sign ? EA_LOADS : EA_LOADU); \ |
841 |
if (IS_NULL_QREG(result)) { \
|
842 |
gen_addr_fault(s); \ |
843 |
return; \
|
844 |
} \ |
845 |
} while (0) |
846 |
|
847 |
#define DEST_EA(insn, opsize, val, addrp) do { \ |
848 |
TCGv ea_result = gen_ea(s, insn, opsize, val, addrp, EA_STORE); \ |
849 |
if (IS_NULL_QREG(ea_result)) { \
|
850 |
gen_addr_fault(s); \ |
851 |
return; \
|
852 |
} \ |
853 |
} while (0) |
854 |
|
855 |
/* Generate a jump to an immediate address. */
|
856 |
static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest) |
857 |
{ |
858 |
TranslationBlock *tb; |
859 |
|
860 |
tb = s->tb; |
861 |
if (unlikely(s->singlestep_enabled)) {
|
862 |
gen_exception(s, dest, EXCP_DEBUG); |
863 |
} else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || |
864 |
(s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { |
865 |
tcg_gen_goto_tb(n); |
866 |
tcg_gen_movi_i32(QREG_PC, dest); |
867 |
tcg_gen_exit_tb((long)tb + n);
|
868 |
} else {
|
869 |
gen_jmp_im(s, dest); |
870 |
tcg_gen_exit_tb(0);
|
871 |
} |
872 |
s->is_jmp = DISAS_TB_JUMP; |
873 |
} |
874 |
|
875 |
DISAS_INSN(undef_mac) |
876 |
{ |
877 |
gen_exception(s, s->pc - 2, EXCP_LINEA);
|
878 |
} |
879 |
|
880 |
DISAS_INSN(undef_fpu) |
881 |
{ |
882 |
gen_exception(s, s->pc - 2, EXCP_LINEF);
|
883 |
} |
884 |
|
885 |
DISAS_INSN(undef) |
886 |
{ |
887 |
gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
|
888 |
cpu_abort(cpu_single_env, "Illegal instruction: %04x @ %08x",
|
889 |
insn, s->pc - 2);
|
890 |
} |
891 |
|
892 |
DISAS_INSN(mulw) |
893 |
{ |
894 |
TCGv reg; |
895 |
TCGv tmp; |
896 |
TCGv src; |
897 |
int sign;
|
898 |
|
899 |
sign = (insn & 0x100) != 0; |
900 |
reg = DREG(insn, 9);
|
901 |
tmp = tcg_temp_new(); |
902 |
if (sign)
|
903 |
tcg_gen_ext16s_i32(tmp, reg); |
904 |
else
|
905 |
tcg_gen_ext16u_i32(tmp, reg); |
906 |
SRC_EA(src, OS_WORD, sign, NULL);
|
907 |
tcg_gen_mul_i32(tmp, tmp, src); |
908 |
tcg_gen_mov_i32(reg, tmp); |
909 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
910 |
gen_logic_cc(s, tmp); |
911 |
} |
912 |
|
913 |
DISAS_INSN(divw) |
914 |
{ |
915 |
TCGv reg; |
916 |
TCGv tmp; |
917 |
TCGv src; |
918 |
int sign;
|
919 |
|
920 |
sign = (insn & 0x100) != 0; |
921 |
reg = DREG(insn, 9);
|
922 |
if (sign) {
|
923 |
tcg_gen_ext16s_i32(QREG_DIV1, reg); |
924 |
} else {
|
925 |
tcg_gen_ext16u_i32(QREG_DIV1, reg); |
926 |
} |
927 |
SRC_EA(src, OS_WORD, sign, NULL);
|
928 |
tcg_gen_mov_i32(QREG_DIV2, src); |
929 |
if (sign) {
|
930 |
gen_helper_divs(cpu_env, tcg_const_i32(1));
|
931 |
} else {
|
932 |
gen_helper_divu(cpu_env, tcg_const_i32(1));
|
933 |
} |
934 |
|
935 |
tmp = tcg_temp_new(); |
936 |
src = tcg_temp_new(); |
937 |
tcg_gen_ext16u_i32(tmp, QREG_DIV1); |
938 |
tcg_gen_shli_i32(src, QREG_DIV2, 16);
|
939 |
tcg_gen_or_i32(reg, tmp, src); |
940 |
s->cc_op = CC_OP_FLAGS; |
941 |
} |
942 |
|
943 |
DISAS_INSN(divl) |
944 |
{ |
945 |
TCGv num; |
946 |
TCGv den; |
947 |
TCGv reg; |
948 |
uint16_t ext; |
949 |
|
950 |
ext = lduw_code(s->pc); |
951 |
s->pc += 2;
|
952 |
if (ext & 0x87f8) { |
953 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
954 |
return;
|
955 |
} |
956 |
num = DREG(ext, 12);
|
957 |
reg = DREG(ext, 0);
|
958 |
tcg_gen_mov_i32(QREG_DIV1, num); |
959 |
SRC_EA(den, OS_LONG, 0, NULL); |
960 |
tcg_gen_mov_i32(QREG_DIV2, den); |
961 |
if (ext & 0x0800) { |
962 |
gen_helper_divs(cpu_env, tcg_const_i32(0));
|
963 |
} else {
|
964 |
gen_helper_divu(cpu_env, tcg_const_i32(0));
|
965 |
} |
966 |
if ((ext & 7) == ((ext >> 12) & 7)) { |
967 |
/* div */
|
968 |
tcg_gen_mov_i32 (reg, QREG_DIV1); |
969 |
} else {
|
970 |
/* rem */
|
971 |
tcg_gen_mov_i32 (reg, QREG_DIV2); |
972 |
} |
973 |
s->cc_op = CC_OP_FLAGS; |
974 |
} |
975 |
|
976 |
DISAS_INSN(addsub) |
977 |
{ |
978 |
TCGv reg; |
979 |
TCGv dest; |
980 |
TCGv src; |
981 |
TCGv tmp; |
982 |
TCGv addr; |
983 |
int add;
|
984 |
|
985 |
add = (insn & 0x4000) != 0; |
986 |
reg = DREG(insn, 9);
|
987 |
dest = tcg_temp_new(); |
988 |
if (insn & 0x100) { |
989 |
SRC_EA(tmp, OS_LONG, 0, &addr);
|
990 |
src = reg; |
991 |
} else {
|
992 |
tmp = reg; |
993 |
SRC_EA(src, OS_LONG, 0, NULL); |
994 |
} |
995 |
if (add) {
|
996 |
tcg_gen_add_i32(dest, tmp, src); |
997 |
gen_helper_xflag_lt(QREG_CC_X, dest, src); |
998 |
s->cc_op = CC_OP_ADD; |
999 |
} else {
|
1000 |
gen_helper_xflag_lt(QREG_CC_X, tmp, src); |
1001 |
tcg_gen_sub_i32(dest, tmp, src); |
1002 |
s->cc_op = CC_OP_SUB; |
1003 |
} |
1004 |
gen_update_cc_add(dest, src); |
1005 |
if (insn & 0x100) { |
1006 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1007 |
} else {
|
1008 |
tcg_gen_mov_i32(reg, dest); |
1009 |
} |
1010 |
} |
1011 |
|
1012 |
|
1013 |
/* Reverse the order of the bits in REG. */
|
1014 |
DISAS_INSN(bitrev) |
1015 |
{ |
1016 |
TCGv reg; |
1017 |
reg = DREG(insn, 0);
|
1018 |
gen_helper_bitrev(reg, reg); |
1019 |
} |
1020 |
|
1021 |
DISAS_INSN(bitop_reg) |
1022 |
{ |
1023 |
int opsize;
|
1024 |
int op;
|
1025 |
TCGv src1; |
1026 |
TCGv src2; |
1027 |
TCGv tmp; |
1028 |
TCGv addr; |
1029 |
TCGv dest; |
1030 |
|
1031 |
if ((insn & 0x38) != 0) |
1032 |
opsize = OS_BYTE; |
1033 |
else
|
1034 |
opsize = OS_LONG; |
1035 |
op = (insn >> 6) & 3; |
1036 |
SRC_EA(src1, opsize, 0, op ? &addr: NULL); |
1037 |
src2 = DREG(insn, 9);
|
1038 |
dest = tcg_temp_new(); |
1039 |
|
1040 |
gen_flush_flags(s); |
1041 |
tmp = tcg_temp_new(); |
1042 |
if (opsize == OS_BYTE)
|
1043 |
tcg_gen_andi_i32(tmp, src2, 7);
|
1044 |
else
|
1045 |
tcg_gen_andi_i32(tmp, src2, 31);
|
1046 |
src2 = tmp; |
1047 |
tmp = tcg_temp_new(); |
1048 |
tcg_gen_shr_i32(tmp, src1, src2); |
1049 |
tcg_gen_andi_i32(tmp, tmp, 1);
|
1050 |
tcg_gen_shli_i32(tmp, tmp, 2);
|
1051 |
/* Clear CCF_Z if bit set. */
|
1052 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
1053 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
1054 |
|
1055 |
tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
|
1056 |
switch (op) {
|
1057 |
case 1: /* bchg */ |
1058 |
tcg_gen_xor_i32(dest, src1, tmp); |
1059 |
break;
|
1060 |
case 2: /* bclr */ |
1061 |
tcg_gen_not_i32(tmp, tmp); |
1062 |
tcg_gen_and_i32(dest, src1, tmp); |
1063 |
break;
|
1064 |
case 3: /* bset */ |
1065 |
tcg_gen_or_i32(dest, src1, tmp); |
1066 |
break;
|
1067 |
default: /* btst */ |
1068 |
break;
|
1069 |
} |
1070 |
if (op)
|
1071 |
DEST_EA(insn, opsize, dest, &addr); |
1072 |
} |
1073 |
|
1074 |
DISAS_INSN(sats) |
1075 |
{ |
1076 |
TCGv reg; |
1077 |
reg = DREG(insn, 0);
|
1078 |
gen_flush_flags(s); |
1079 |
gen_helper_sats(reg, reg, QREG_CC_DEST); |
1080 |
gen_logic_cc(s, reg); |
1081 |
} |
1082 |
|
1083 |
static void gen_push(DisasContext *s, TCGv val) |
1084 |
{ |
1085 |
TCGv tmp; |
1086 |
|
1087 |
tmp = tcg_temp_new(); |
1088 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
1089 |
gen_store(s, OS_LONG, tmp, val); |
1090 |
tcg_gen_mov_i32(QREG_SP, tmp); |
1091 |
} |
1092 |
|
1093 |
DISAS_INSN(movem) |
1094 |
{ |
1095 |
TCGv addr; |
1096 |
int i;
|
1097 |
uint16_t mask; |
1098 |
TCGv reg; |
1099 |
TCGv tmp; |
1100 |
int is_load;
|
1101 |
|
1102 |
mask = lduw_code(s->pc); |
1103 |
s->pc += 2;
|
1104 |
tmp = gen_lea(s, insn, OS_LONG); |
1105 |
if (IS_NULL_QREG(tmp)) {
|
1106 |
gen_addr_fault(s); |
1107 |
return;
|
1108 |
} |
1109 |
addr = tcg_temp_new(); |
1110 |
tcg_gen_mov_i32(addr, tmp); |
1111 |
is_load = ((insn & 0x0400) != 0); |
1112 |
for (i = 0; i < 16; i++, mask >>= 1) { |
1113 |
if (mask & 1) { |
1114 |
if (i < 8) |
1115 |
reg = DREG(i, 0);
|
1116 |
else
|
1117 |
reg = AREG(i, 0);
|
1118 |
if (is_load) {
|
1119 |
tmp = gen_load(s, OS_LONG, addr, 0);
|
1120 |
tcg_gen_mov_i32(reg, tmp); |
1121 |
} else {
|
1122 |
gen_store(s, OS_LONG, addr, reg); |
1123 |
} |
1124 |
if (mask != 1) |
1125 |
tcg_gen_addi_i32(addr, addr, 4);
|
1126 |
} |
1127 |
} |
1128 |
} |
1129 |
|
1130 |
DISAS_INSN(bitop_im) |
1131 |
{ |
1132 |
int opsize;
|
1133 |
int op;
|
1134 |
TCGv src1; |
1135 |
uint32_t mask; |
1136 |
int bitnum;
|
1137 |
TCGv tmp; |
1138 |
TCGv addr; |
1139 |
|
1140 |
if ((insn & 0x38) != 0) |
1141 |
opsize = OS_BYTE; |
1142 |
else
|
1143 |
opsize = OS_LONG; |
1144 |
op = (insn >> 6) & 3; |
1145 |
|
1146 |
bitnum = lduw_code(s->pc); |
1147 |
s->pc += 2;
|
1148 |
if (bitnum & 0xff00) { |
1149 |
disas_undef(s, insn); |
1150 |
return;
|
1151 |
} |
1152 |
|
1153 |
SRC_EA(src1, opsize, 0, op ? &addr: NULL); |
1154 |
|
1155 |
gen_flush_flags(s); |
1156 |
if (opsize == OS_BYTE)
|
1157 |
bitnum &= 7;
|
1158 |
else
|
1159 |
bitnum &= 31;
|
1160 |
mask = 1 << bitnum;
|
1161 |
|
1162 |
tmp = tcg_temp_new(); |
1163 |
assert (CCF_Z == (1 << 2)); |
1164 |
if (bitnum > 2) |
1165 |
tcg_gen_shri_i32(tmp, src1, bitnum - 2);
|
1166 |
else if (bitnum < 2) |
1167 |
tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
|
1168 |
else
|
1169 |
tcg_gen_mov_i32(tmp, src1); |
1170 |
tcg_gen_andi_i32(tmp, tmp, CCF_Z); |
1171 |
/* Clear CCF_Z if bit set. */
|
1172 |
tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); |
1173 |
tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); |
1174 |
if (op) {
|
1175 |
switch (op) {
|
1176 |
case 1: /* bchg */ |
1177 |
tcg_gen_xori_i32(tmp, src1, mask); |
1178 |
break;
|
1179 |
case 2: /* bclr */ |
1180 |
tcg_gen_andi_i32(tmp, src1, ~mask); |
1181 |
break;
|
1182 |
case 3: /* bset */ |
1183 |
tcg_gen_ori_i32(tmp, src1, mask); |
1184 |
break;
|
1185 |
default: /* btst */ |
1186 |
break;
|
1187 |
} |
1188 |
DEST_EA(insn, opsize, tmp, &addr); |
1189 |
} |
1190 |
} |
1191 |
|
1192 |
DISAS_INSN(arith_im) |
1193 |
{ |
1194 |
int op;
|
1195 |
uint32_t im; |
1196 |
TCGv src1; |
1197 |
TCGv dest; |
1198 |
TCGv addr; |
1199 |
|
1200 |
op = (insn >> 9) & 7; |
1201 |
SRC_EA(src1, OS_LONG, 0, (op == 6) ? NULL : &addr); |
1202 |
im = read_im32(s); |
1203 |
dest = tcg_temp_new(); |
1204 |
switch (op) {
|
1205 |
case 0: /* ori */ |
1206 |
tcg_gen_ori_i32(dest, src1, im); |
1207 |
gen_logic_cc(s, dest); |
1208 |
break;
|
1209 |
case 1: /* andi */ |
1210 |
tcg_gen_andi_i32(dest, src1, im); |
1211 |
gen_logic_cc(s, dest); |
1212 |
break;
|
1213 |
case 2: /* subi */ |
1214 |
tcg_gen_mov_i32(dest, src1); |
1215 |
gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im)); |
1216 |
tcg_gen_subi_i32(dest, dest, im); |
1217 |
gen_update_cc_add(dest, gen_im32(im)); |
1218 |
s->cc_op = CC_OP_SUB; |
1219 |
break;
|
1220 |
case 3: /* addi */ |
1221 |
tcg_gen_mov_i32(dest, src1); |
1222 |
tcg_gen_addi_i32(dest, dest, im); |
1223 |
gen_update_cc_add(dest, gen_im32(im)); |
1224 |
gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im)); |
1225 |
s->cc_op = CC_OP_ADD; |
1226 |
break;
|
1227 |
case 5: /* eori */ |
1228 |
tcg_gen_xori_i32(dest, src1, im); |
1229 |
gen_logic_cc(s, dest); |
1230 |
break;
|
1231 |
case 6: /* cmpi */ |
1232 |
tcg_gen_mov_i32(dest, src1); |
1233 |
tcg_gen_subi_i32(dest, dest, im); |
1234 |
gen_update_cc_add(dest, gen_im32(im)); |
1235 |
s->cc_op = CC_OP_SUB; |
1236 |
break;
|
1237 |
default:
|
1238 |
abort(); |
1239 |
} |
1240 |
if (op != 6) { |
1241 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1242 |
} |
1243 |
} |
1244 |
|
1245 |
DISAS_INSN(byterev) |
1246 |
{ |
1247 |
TCGv reg; |
1248 |
|
1249 |
reg = DREG(insn, 0);
|
1250 |
tcg_gen_bswap32_i32(reg, reg); |
1251 |
} |
1252 |
|
1253 |
DISAS_INSN(move) |
1254 |
{ |
1255 |
TCGv src; |
1256 |
TCGv dest; |
1257 |
int op;
|
1258 |
int opsize;
|
1259 |
|
1260 |
switch (insn >> 12) { |
1261 |
case 1: /* move.b */ |
1262 |
opsize = OS_BYTE; |
1263 |
break;
|
1264 |
case 2: /* move.l */ |
1265 |
opsize = OS_LONG; |
1266 |
break;
|
1267 |
case 3: /* move.w */ |
1268 |
opsize = OS_WORD; |
1269 |
break;
|
1270 |
default:
|
1271 |
abort(); |
1272 |
} |
1273 |
SRC_EA(src, opsize, 1, NULL); |
1274 |
op = (insn >> 6) & 7; |
1275 |
if (op == 1) { |
1276 |
/* movea */
|
1277 |
/* The value will already have been sign extended. */
|
1278 |
dest = AREG(insn, 9);
|
1279 |
tcg_gen_mov_i32(dest, src); |
1280 |
} else {
|
1281 |
/* normal move */
|
1282 |
uint16_t dest_ea; |
1283 |
dest_ea = ((insn >> 9) & 7) | (op << 3); |
1284 |
DEST_EA(dest_ea, opsize, src, NULL);
|
1285 |
/* This will be correct because loads sign extend. */
|
1286 |
gen_logic_cc(s, src); |
1287 |
} |
1288 |
} |
1289 |
|
1290 |
DISAS_INSN(negx) |
1291 |
{ |
1292 |
TCGv reg; |
1293 |
|
1294 |
gen_flush_flags(s); |
1295 |
reg = DREG(insn, 0);
|
1296 |
gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
|
1297 |
} |
1298 |
|
1299 |
DISAS_INSN(lea) |
1300 |
{ |
1301 |
TCGv reg; |
1302 |
TCGv tmp; |
1303 |
|
1304 |
reg = AREG(insn, 9);
|
1305 |
tmp = gen_lea(s, insn, OS_LONG); |
1306 |
if (IS_NULL_QREG(tmp)) {
|
1307 |
gen_addr_fault(s); |
1308 |
return;
|
1309 |
} |
1310 |
tcg_gen_mov_i32(reg, tmp); |
1311 |
} |
1312 |
|
1313 |
DISAS_INSN(clr) |
1314 |
{ |
1315 |
int opsize;
|
1316 |
|
1317 |
switch ((insn >> 6) & 3) { |
1318 |
case 0: /* clr.b */ |
1319 |
opsize = OS_BYTE; |
1320 |
break;
|
1321 |
case 1: /* clr.w */ |
1322 |
opsize = OS_WORD; |
1323 |
break;
|
1324 |
case 2: /* clr.l */ |
1325 |
opsize = OS_LONG; |
1326 |
break;
|
1327 |
default:
|
1328 |
abort(); |
1329 |
} |
1330 |
DEST_EA(insn, opsize, gen_im32(0), NULL); |
1331 |
gen_logic_cc(s, gen_im32(0));
|
1332 |
} |
1333 |
|
1334 |
static TCGv gen_get_ccr(DisasContext *s)
|
1335 |
{ |
1336 |
TCGv dest; |
1337 |
|
1338 |
gen_flush_flags(s); |
1339 |
dest = tcg_temp_new(); |
1340 |
tcg_gen_shli_i32(dest, QREG_CC_X, 4);
|
1341 |
tcg_gen_or_i32(dest, dest, QREG_CC_DEST); |
1342 |
return dest;
|
1343 |
} |
1344 |
|
1345 |
DISAS_INSN(move_from_ccr) |
1346 |
{ |
1347 |
TCGv reg; |
1348 |
TCGv ccr; |
1349 |
|
1350 |
ccr = gen_get_ccr(s); |
1351 |
reg = DREG(insn, 0);
|
1352 |
gen_partset_reg(OS_WORD, reg, ccr); |
1353 |
} |
1354 |
|
1355 |
DISAS_INSN(neg) |
1356 |
{ |
1357 |
TCGv reg; |
1358 |
TCGv src1; |
1359 |
|
1360 |
reg = DREG(insn, 0);
|
1361 |
src1 = tcg_temp_new(); |
1362 |
tcg_gen_mov_i32(src1, reg); |
1363 |
tcg_gen_neg_i32(reg, src1); |
1364 |
s->cc_op = CC_OP_SUB; |
1365 |
gen_update_cc_add(reg, src1); |
1366 |
gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
|
1367 |
s->cc_op = CC_OP_SUB; |
1368 |
} |
1369 |
|
1370 |
static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only) |
1371 |
{ |
1372 |
tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
|
1373 |
tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4); |
1374 |
if (!ccr_only) {
|
1375 |
gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
|
1376 |
} |
1377 |
} |
1378 |
|
1379 |
static void gen_set_sr(DisasContext *s, uint16_t insn, int ccr_only) |
1380 |
{ |
1381 |
TCGv tmp; |
1382 |
TCGv reg; |
1383 |
|
1384 |
s->cc_op = CC_OP_FLAGS; |
1385 |
if ((insn & 0x38) == 0) |
1386 |
{ |
1387 |
tmp = tcg_temp_new(); |
1388 |
reg = DREG(insn, 0);
|
1389 |
tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
|
1390 |
tcg_gen_shri_i32(tmp, reg, 4);
|
1391 |
tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
|
1392 |
if (!ccr_only) {
|
1393 |
gen_helper_set_sr(cpu_env, reg); |
1394 |
} |
1395 |
} |
1396 |
else if ((insn & 0x3f) == 0x3c) |
1397 |
{ |
1398 |
uint16_t val; |
1399 |
val = lduw_code(s->pc); |
1400 |
s->pc += 2;
|
1401 |
gen_set_sr_im(s, val, ccr_only); |
1402 |
} |
1403 |
else
|
1404 |
disas_undef(s, insn); |
1405 |
} |
1406 |
|
1407 |
DISAS_INSN(move_to_ccr) |
1408 |
{ |
1409 |
gen_set_sr(s, insn, 1);
|
1410 |
} |
1411 |
|
1412 |
DISAS_INSN(not) |
1413 |
{ |
1414 |
TCGv reg; |
1415 |
|
1416 |
reg = DREG(insn, 0);
|
1417 |
tcg_gen_not_i32(reg, reg); |
1418 |
gen_logic_cc(s, reg); |
1419 |
} |
1420 |
|
1421 |
DISAS_INSN(swap) |
1422 |
{ |
1423 |
TCGv src1; |
1424 |
TCGv src2; |
1425 |
TCGv reg; |
1426 |
|
1427 |
src1 = tcg_temp_new(); |
1428 |
src2 = tcg_temp_new(); |
1429 |
reg = DREG(insn, 0);
|
1430 |
tcg_gen_shli_i32(src1, reg, 16);
|
1431 |
tcg_gen_shri_i32(src2, reg, 16);
|
1432 |
tcg_gen_or_i32(reg, src1, src2); |
1433 |
gen_logic_cc(s, reg); |
1434 |
} |
1435 |
|
1436 |
DISAS_INSN(pea) |
1437 |
{ |
1438 |
TCGv tmp; |
1439 |
|
1440 |
tmp = gen_lea(s, insn, OS_LONG); |
1441 |
if (IS_NULL_QREG(tmp)) {
|
1442 |
gen_addr_fault(s); |
1443 |
return;
|
1444 |
} |
1445 |
gen_push(s, tmp); |
1446 |
} |
1447 |
|
1448 |
DISAS_INSN(ext) |
1449 |
{ |
1450 |
int op;
|
1451 |
TCGv reg; |
1452 |
TCGv tmp; |
1453 |
|
1454 |
reg = DREG(insn, 0);
|
1455 |
op = (insn >> 6) & 7; |
1456 |
tmp = tcg_temp_new(); |
1457 |
if (op == 3) |
1458 |
tcg_gen_ext16s_i32(tmp, reg); |
1459 |
else
|
1460 |
tcg_gen_ext8s_i32(tmp, reg); |
1461 |
if (op == 2) |
1462 |
gen_partset_reg(OS_WORD, reg, tmp); |
1463 |
else
|
1464 |
tcg_gen_mov_i32(reg, tmp); |
1465 |
gen_logic_cc(s, tmp); |
1466 |
} |
1467 |
|
1468 |
DISAS_INSN(tst) |
1469 |
{ |
1470 |
int opsize;
|
1471 |
TCGv tmp; |
1472 |
|
1473 |
switch ((insn >> 6) & 3) { |
1474 |
case 0: /* tst.b */ |
1475 |
opsize = OS_BYTE; |
1476 |
break;
|
1477 |
case 1: /* tst.w */ |
1478 |
opsize = OS_WORD; |
1479 |
break;
|
1480 |
case 2: /* tst.l */ |
1481 |
opsize = OS_LONG; |
1482 |
break;
|
1483 |
default:
|
1484 |
abort(); |
1485 |
} |
1486 |
SRC_EA(tmp, opsize, 1, NULL); |
1487 |
gen_logic_cc(s, tmp); |
1488 |
} |
1489 |
|
1490 |
DISAS_INSN(pulse) |
1491 |
{ |
1492 |
/* Implemented as a NOP. */
|
1493 |
} |
1494 |
|
1495 |
DISAS_INSN(illegal) |
1496 |
{ |
1497 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
1498 |
} |
1499 |
|
1500 |
/* ??? This should be atomic. */
|
1501 |
DISAS_INSN(tas) |
1502 |
{ |
1503 |
TCGv dest; |
1504 |
TCGv src1; |
1505 |
TCGv addr; |
1506 |
|
1507 |
dest = tcg_temp_new(); |
1508 |
SRC_EA(src1, OS_BYTE, 1, &addr);
|
1509 |
gen_logic_cc(s, src1); |
1510 |
tcg_gen_ori_i32(dest, src1, 0x80);
|
1511 |
DEST_EA(insn, OS_BYTE, dest, &addr); |
1512 |
} |
1513 |
|
1514 |
DISAS_INSN(mull) |
1515 |
{ |
1516 |
uint16_t ext; |
1517 |
TCGv reg; |
1518 |
TCGv src1; |
1519 |
TCGv dest; |
1520 |
|
1521 |
/* The upper 32 bits of the product are discarded, so
|
1522 |
muls.l and mulu.l are functionally equivalent. */
|
1523 |
ext = lduw_code(s->pc); |
1524 |
s->pc += 2;
|
1525 |
if (ext & 0x87ff) { |
1526 |
gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
|
1527 |
return;
|
1528 |
} |
1529 |
reg = DREG(ext, 12);
|
1530 |
SRC_EA(src1, OS_LONG, 0, NULL); |
1531 |
dest = tcg_temp_new(); |
1532 |
tcg_gen_mul_i32(dest, src1, reg); |
1533 |
tcg_gen_mov_i32(reg, dest); |
1534 |
/* Unlike m68k, coldfire always clears the overflow bit. */
|
1535 |
gen_logic_cc(s, dest); |
1536 |
} |
1537 |
|
1538 |
DISAS_INSN(link) |
1539 |
{ |
1540 |
int16_t offset; |
1541 |
TCGv reg; |
1542 |
TCGv tmp; |
1543 |
|
1544 |
offset = ldsw_code(s->pc); |
1545 |
s->pc += 2;
|
1546 |
reg = AREG(insn, 0);
|
1547 |
tmp = tcg_temp_new(); |
1548 |
tcg_gen_subi_i32(tmp, QREG_SP, 4);
|
1549 |
gen_store(s, OS_LONG, tmp, reg); |
1550 |
if ((insn & 7) != 7) |
1551 |
tcg_gen_mov_i32(reg, tmp); |
1552 |
tcg_gen_addi_i32(QREG_SP, tmp, offset); |
1553 |
} |
1554 |
|
1555 |
DISAS_INSN(unlk) |
1556 |
{ |
1557 |
TCGv src; |
1558 |
TCGv reg; |
1559 |
TCGv tmp; |
1560 |
|
1561 |
src = tcg_temp_new(); |
1562 |
reg = AREG(insn, 0);
|
1563 |
tcg_gen_mov_i32(src, reg); |
1564 |
tmp = gen_load(s, OS_LONG, src, 0);
|
1565 |
tcg_gen_mov_i32(reg, tmp); |
1566 |
tcg_gen_addi_i32(QREG_SP, src, 4);
|
1567 |
} |
1568 |
|
1569 |
DISAS_INSN(nop) |
1570 |
{ |
1571 |
} |
1572 |
|
1573 |
DISAS_INSN(rts) |
1574 |
{ |
1575 |
TCGv tmp; |
1576 |
|
1577 |
tmp = gen_load(s, OS_LONG, QREG_SP, 0);
|
1578 |
tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
|
1579 |
gen_jmp(s, tmp); |
1580 |
} |
1581 |
|
1582 |
DISAS_INSN(jump) |
1583 |
{ |
1584 |
TCGv tmp; |
1585 |
|
1586 |
/* Load the target address first to ensure correct exception
|
1587 |
behavior. */
|
1588 |
tmp = gen_lea(s, insn, OS_LONG); |
1589 |
if (IS_NULL_QREG(tmp)) {
|
1590 |
gen_addr_fault(s); |
1591 |
return;
|
1592 |
} |
1593 |
if ((insn & 0x40) == 0) { |
1594 |
/* jsr */
|
1595 |
gen_push(s, gen_im32(s->pc)); |
1596 |
} |
1597 |
gen_jmp(s, tmp); |
1598 |
} |
1599 |
|
1600 |
DISAS_INSN(addsubq) |
1601 |
{ |
1602 |
TCGv src1; |
1603 |
TCGv src2; |
1604 |
TCGv dest; |
1605 |
int val;
|
1606 |
TCGv addr; |
1607 |
|
1608 |
SRC_EA(src1, OS_LONG, 0, &addr);
|
1609 |
val = (insn >> 9) & 7; |
1610 |
if (val == 0) |
1611 |
val = 8;
|
1612 |
dest = tcg_temp_new(); |
1613 |
tcg_gen_mov_i32(dest, src1); |
1614 |
if ((insn & 0x38) == 0x08) { |
1615 |
/* Don't update condition codes if the destination is an
|
1616 |
address register. */
|
1617 |
if (insn & 0x0100) { |
1618 |
tcg_gen_subi_i32(dest, dest, val); |
1619 |
} else {
|
1620 |
tcg_gen_addi_i32(dest, dest, val); |
1621 |
} |
1622 |
} else {
|
1623 |
src2 = gen_im32(val); |
1624 |
if (insn & 0x0100) { |
1625 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
1626 |
tcg_gen_subi_i32(dest, dest, val); |
1627 |
s->cc_op = CC_OP_SUB; |
1628 |
} else {
|
1629 |
tcg_gen_addi_i32(dest, dest, val); |
1630 |
gen_helper_xflag_lt(QREG_CC_X, dest, src2); |
1631 |
s->cc_op = CC_OP_ADD; |
1632 |
} |
1633 |
gen_update_cc_add(dest, src2); |
1634 |
} |
1635 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1636 |
} |
1637 |
|
1638 |
DISAS_INSN(tpf) |
1639 |
{ |
1640 |
switch (insn & 7) { |
1641 |
case 2: /* One extension word. */ |
1642 |
s->pc += 2;
|
1643 |
break;
|
1644 |
case 3: /* Two extension words. */ |
1645 |
s->pc += 4;
|
1646 |
break;
|
1647 |
case 4: /* No extension words. */ |
1648 |
break;
|
1649 |
default:
|
1650 |
disas_undef(s, insn); |
1651 |
} |
1652 |
} |
1653 |
|
1654 |
DISAS_INSN(branch) |
1655 |
{ |
1656 |
int32_t offset; |
1657 |
uint32_t base; |
1658 |
int op;
|
1659 |
int l1;
|
1660 |
|
1661 |
base = s->pc; |
1662 |
op = (insn >> 8) & 0xf; |
1663 |
offset = (int8_t)insn; |
1664 |
if (offset == 0) { |
1665 |
offset = ldsw_code(s->pc); |
1666 |
s->pc += 2;
|
1667 |
} else if (offset == -1) { |
1668 |
offset = read_im32(s); |
1669 |
} |
1670 |
if (op == 1) { |
1671 |
/* bsr */
|
1672 |
gen_push(s, gen_im32(s->pc)); |
1673 |
} |
1674 |
gen_flush_cc_op(s); |
1675 |
if (op > 1) { |
1676 |
/* Bcc */
|
1677 |
l1 = gen_new_label(); |
1678 |
gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1); |
1679 |
gen_jmp_tb(s, 1, base + offset);
|
1680 |
gen_set_label(l1); |
1681 |
gen_jmp_tb(s, 0, s->pc);
|
1682 |
} else {
|
1683 |
/* Unconditional branch. */
|
1684 |
gen_jmp_tb(s, 0, base + offset);
|
1685 |
} |
1686 |
} |
1687 |
|
1688 |
DISAS_INSN(moveq) |
1689 |
{ |
1690 |
uint32_t val; |
1691 |
|
1692 |
val = (int8_t)insn; |
1693 |
tcg_gen_movi_i32(DREG(insn, 9), val);
|
1694 |
gen_logic_cc(s, tcg_const_i32(val)); |
1695 |
} |
1696 |
|
1697 |
DISAS_INSN(mvzs) |
1698 |
{ |
1699 |
int opsize;
|
1700 |
TCGv src; |
1701 |
TCGv reg; |
1702 |
|
1703 |
if (insn & 0x40) |
1704 |
opsize = OS_WORD; |
1705 |
else
|
1706 |
opsize = OS_BYTE; |
1707 |
SRC_EA(src, opsize, (insn & 0x80) == 0, NULL); |
1708 |
reg = DREG(insn, 9);
|
1709 |
tcg_gen_mov_i32(reg, src); |
1710 |
gen_logic_cc(s, src); |
1711 |
} |
1712 |
|
1713 |
DISAS_INSN(or) |
1714 |
{ |
1715 |
TCGv reg; |
1716 |
TCGv dest; |
1717 |
TCGv src; |
1718 |
TCGv addr; |
1719 |
|
1720 |
reg = DREG(insn, 9);
|
1721 |
dest = tcg_temp_new(); |
1722 |
if (insn & 0x100) { |
1723 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1724 |
tcg_gen_or_i32(dest, src, reg); |
1725 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1726 |
} else {
|
1727 |
SRC_EA(src, OS_LONG, 0, NULL); |
1728 |
tcg_gen_or_i32(dest, src, reg); |
1729 |
tcg_gen_mov_i32(reg, dest); |
1730 |
} |
1731 |
gen_logic_cc(s, dest); |
1732 |
} |
1733 |
|
1734 |
DISAS_INSN(suba) |
1735 |
{ |
1736 |
TCGv src; |
1737 |
TCGv reg; |
1738 |
|
1739 |
SRC_EA(src, OS_LONG, 0, NULL); |
1740 |
reg = AREG(insn, 9);
|
1741 |
tcg_gen_sub_i32(reg, reg, src); |
1742 |
} |
1743 |
|
1744 |
DISAS_INSN(subx) |
1745 |
{ |
1746 |
TCGv reg; |
1747 |
TCGv src; |
1748 |
|
1749 |
gen_flush_flags(s); |
1750 |
reg = DREG(insn, 9);
|
1751 |
src = DREG(insn, 0);
|
1752 |
gen_helper_subx_cc(reg, cpu_env, reg, src); |
1753 |
} |
1754 |
|
1755 |
DISAS_INSN(mov3q) |
1756 |
{ |
1757 |
TCGv src; |
1758 |
int val;
|
1759 |
|
1760 |
val = (insn >> 9) & 7; |
1761 |
if (val == 0) |
1762 |
val = -1;
|
1763 |
src = gen_im32(val); |
1764 |
gen_logic_cc(s, src); |
1765 |
DEST_EA(insn, OS_LONG, src, NULL);
|
1766 |
} |
1767 |
|
1768 |
DISAS_INSN(cmp) |
1769 |
{ |
1770 |
int op;
|
1771 |
TCGv src; |
1772 |
TCGv reg; |
1773 |
TCGv dest; |
1774 |
int opsize;
|
1775 |
|
1776 |
op = (insn >> 6) & 3; |
1777 |
switch (op) {
|
1778 |
case 0: /* cmp.b */ |
1779 |
opsize = OS_BYTE; |
1780 |
s->cc_op = CC_OP_CMPB; |
1781 |
break;
|
1782 |
case 1: /* cmp.w */ |
1783 |
opsize = OS_WORD; |
1784 |
s->cc_op = CC_OP_CMPW; |
1785 |
break;
|
1786 |
case 2: /* cmp.l */ |
1787 |
opsize = OS_LONG; |
1788 |
s->cc_op = CC_OP_SUB; |
1789 |
break;
|
1790 |
default:
|
1791 |
abort(); |
1792 |
} |
1793 |
SRC_EA(src, opsize, 1, NULL); |
1794 |
reg = DREG(insn, 9);
|
1795 |
dest = tcg_temp_new(); |
1796 |
tcg_gen_sub_i32(dest, reg, src); |
1797 |
gen_update_cc_add(dest, src); |
1798 |
} |
1799 |
|
1800 |
DISAS_INSN(cmpa) |
1801 |
{ |
1802 |
int opsize;
|
1803 |
TCGv src; |
1804 |
TCGv reg; |
1805 |
TCGv dest; |
1806 |
|
1807 |
if (insn & 0x100) { |
1808 |
opsize = OS_LONG; |
1809 |
} else {
|
1810 |
opsize = OS_WORD; |
1811 |
} |
1812 |
SRC_EA(src, opsize, 1, NULL); |
1813 |
reg = AREG(insn, 9);
|
1814 |
dest = tcg_temp_new(); |
1815 |
tcg_gen_sub_i32(dest, reg, src); |
1816 |
gen_update_cc_add(dest, src); |
1817 |
s->cc_op = CC_OP_SUB; |
1818 |
} |
1819 |
|
1820 |
DISAS_INSN(eor) |
1821 |
{ |
1822 |
TCGv src; |
1823 |
TCGv reg; |
1824 |
TCGv dest; |
1825 |
TCGv addr; |
1826 |
|
1827 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1828 |
reg = DREG(insn, 9);
|
1829 |
dest = tcg_temp_new(); |
1830 |
tcg_gen_xor_i32(dest, src, reg); |
1831 |
gen_logic_cc(s, dest); |
1832 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1833 |
} |
1834 |
|
1835 |
DISAS_INSN(and) |
1836 |
{ |
1837 |
TCGv src; |
1838 |
TCGv reg; |
1839 |
TCGv dest; |
1840 |
TCGv addr; |
1841 |
|
1842 |
reg = DREG(insn, 9);
|
1843 |
dest = tcg_temp_new(); |
1844 |
if (insn & 0x100) { |
1845 |
SRC_EA(src, OS_LONG, 0, &addr);
|
1846 |
tcg_gen_and_i32(dest, src, reg); |
1847 |
DEST_EA(insn, OS_LONG, dest, &addr); |
1848 |
} else {
|
1849 |
SRC_EA(src, OS_LONG, 0, NULL); |
1850 |
tcg_gen_and_i32(dest, src, reg); |
1851 |
tcg_gen_mov_i32(reg, dest); |
1852 |
} |
1853 |
gen_logic_cc(s, dest); |
1854 |
} |
1855 |
|
1856 |
DISAS_INSN(adda) |
1857 |
{ |
1858 |
TCGv src; |
1859 |
TCGv reg; |
1860 |
|
1861 |
SRC_EA(src, OS_LONG, 0, NULL); |
1862 |
reg = AREG(insn, 9);
|
1863 |
tcg_gen_add_i32(reg, reg, src); |
1864 |
} |
1865 |
|
1866 |
DISAS_INSN(addx) |
1867 |
{ |
1868 |
TCGv reg; |
1869 |
TCGv src; |
1870 |
|
1871 |
gen_flush_flags(s); |
1872 |
reg = DREG(insn, 9);
|
1873 |
src = DREG(insn, 0);
|
1874 |
gen_helper_addx_cc(reg, cpu_env, reg, src); |
1875 |
s->cc_op = CC_OP_FLAGS; |
1876 |
} |
1877 |
|
1878 |
/* TODO: This could be implemented without helper functions. */
|
1879 |
DISAS_INSN(shift_im) |
1880 |
{ |
1881 |
TCGv reg; |
1882 |
int tmp;
|
1883 |
TCGv shift; |
1884 |
|
1885 |
reg = DREG(insn, 0);
|
1886 |
tmp = (insn >> 9) & 7; |
1887 |
if (tmp == 0) |
1888 |
tmp = 8;
|
1889 |
shift = gen_im32(tmp); |
1890 |
/* No need to flush flags becuse we know we will set C flag. */
|
1891 |
if (insn & 0x100) { |
1892 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
1893 |
} else {
|
1894 |
if (insn & 8) { |
1895 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
1896 |
} else {
|
1897 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
1898 |
} |
1899 |
} |
1900 |
s->cc_op = CC_OP_SHIFT; |
1901 |
} |
1902 |
|
1903 |
DISAS_INSN(shift_reg) |
1904 |
{ |
1905 |
TCGv reg; |
1906 |
TCGv shift; |
1907 |
|
1908 |
reg = DREG(insn, 0);
|
1909 |
shift = DREG(insn, 9);
|
1910 |
/* Shift by zero leaves C flag unmodified. */
|
1911 |
gen_flush_flags(s); |
1912 |
if (insn & 0x100) { |
1913 |
gen_helper_shl_cc(reg, cpu_env, reg, shift); |
1914 |
} else {
|
1915 |
if (insn & 8) { |
1916 |
gen_helper_shr_cc(reg, cpu_env, reg, shift); |
1917 |
} else {
|
1918 |
gen_helper_sar_cc(reg, cpu_env, reg, shift); |
1919 |
} |
1920 |
} |
1921 |
s->cc_op = CC_OP_SHIFT; |
1922 |
} |
1923 |
|
1924 |
DISAS_INSN(ff1) |
1925 |
{ |
1926 |
TCGv reg; |
1927 |
reg = DREG(insn, 0);
|
1928 |
gen_logic_cc(s, reg); |
1929 |
gen_helper_ff1(reg, reg); |
1930 |
} |
1931 |
|
1932 |
static TCGv gen_get_sr(DisasContext *s)
|
1933 |
{ |
1934 |
TCGv ccr; |
1935 |
TCGv sr; |
1936 |
|
1937 |
ccr = gen_get_ccr(s); |
1938 |
sr = tcg_temp_new(); |
1939 |
tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
|
1940 |
tcg_gen_or_i32(sr, sr, ccr); |
1941 |
return sr;
|
1942 |
} |
1943 |
|
1944 |
DISAS_INSN(strldsr) |
1945 |
{ |
1946 |
uint16_t ext; |
1947 |
uint32_t addr; |
1948 |
|
1949 |
addr = s->pc - 2;
|
1950 |
ext = lduw_code(s->pc); |
1951 |
s->pc += 2;
|
1952 |
if (ext != 0x46FC) { |
1953 |
gen_exception(s, addr, EXCP_UNSUPPORTED); |
1954 |
return;
|
1955 |
} |
1956 |
ext = lduw_code(s->pc); |
1957 |
s->pc += 2;
|
1958 |
if (IS_USER(s) || (ext & SR_S) == 0) { |
1959 |
gen_exception(s, addr, EXCP_PRIVILEGE); |
1960 |
return;
|
1961 |
} |
1962 |
gen_push(s, gen_get_sr(s)); |
1963 |
gen_set_sr_im(s, ext, 0);
|
1964 |
} |
1965 |
|
1966 |
DISAS_INSN(move_from_sr) |
1967 |
{ |
1968 |
TCGv reg; |
1969 |
TCGv sr; |
1970 |
|
1971 |
if (IS_USER(s)) {
|
1972 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1973 |
return;
|
1974 |
} |
1975 |
sr = gen_get_sr(s); |
1976 |
reg = DREG(insn, 0);
|
1977 |
gen_partset_reg(OS_WORD, reg, sr); |
1978 |
} |
1979 |
|
1980 |
DISAS_INSN(move_to_sr) |
1981 |
{ |
1982 |
if (IS_USER(s)) {
|
1983 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1984 |
return;
|
1985 |
} |
1986 |
gen_set_sr(s, insn, 0);
|
1987 |
gen_lookup_tb(s); |
1988 |
} |
1989 |
|
1990 |
DISAS_INSN(move_from_usp) |
1991 |
{ |
1992 |
if (IS_USER(s)) {
|
1993 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
1994 |
return;
|
1995 |
} |
1996 |
/* TODO: Implement USP. */
|
1997 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
1998 |
} |
1999 |
|
2000 |
DISAS_INSN(move_to_usp) |
2001 |
{ |
2002 |
if (IS_USER(s)) {
|
2003 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2004 |
return;
|
2005 |
} |
2006 |
/* TODO: Implement USP. */
|
2007 |
gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
|
2008 |
} |
2009 |
|
2010 |
DISAS_INSN(halt) |
2011 |
{ |
2012 |
gen_exception(s, s->pc, EXCP_HALT_INSN); |
2013 |
} |
2014 |
|
2015 |
DISAS_INSN(stop) |
2016 |
{ |
2017 |
uint16_t ext; |
2018 |
|
2019 |
if (IS_USER(s)) {
|
2020 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2021 |
return;
|
2022 |
} |
2023 |
|
2024 |
ext = lduw_code(s->pc); |
2025 |
s->pc += 2;
|
2026 |
|
2027 |
gen_set_sr_im(s, ext, 0);
|
2028 |
tcg_gen_movi_i32(QREG_HALTED, 1);
|
2029 |
gen_exception(s, s->pc, EXCP_HLT); |
2030 |
} |
2031 |
|
2032 |
DISAS_INSN(rte) |
2033 |
{ |
2034 |
if (IS_USER(s)) {
|
2035 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2036 |
return;
|
2037 |
} |
2038 |
gen_exception(s, s->pc - 2, EXCP_RTE);
|
2039 |
} |
2040 |
|
2041 |
DISAS_INSN(movec) |
2042 |
{ |
2043 |
uint16_t ext; |
2044 |
TCGv reg; |
2045 |
|
2046 |
if (IS_USER(s)) {
|
2047 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2048 |
return;
|
2049 |
} |
2050 |
|
2051 |
ext = lduw_code(s->pc); |
2052 |
s->pc += 2;
|
2053 |
|
2054 |
if (ext & 0x8000) { |
2055 |
reg = AREG(ext, 12);
|
2056 |
} else {
|
2057 |
reg = DREG(ext, 12);
|
2058 |
} |
2059 |
gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
|
2060 |
gen_lookup_tb(s); |
2061 |
} |
2062 |
|
2063 |
DISAS_INSN(intouch) |
2064 |
{ |
2065 |
if (IS_USER(s)) {
|
2066 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2067 |
return;
|
2068 |
} |
2069 |
/* ICache fetch. Implement as no-op. */
|
2070 |
} |
2071 |
|
2072 |
DISAS_INSN(cpushl) |
2073 |
{ |
2074 |
if (IS_USER(s)) {
|
2075 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2076 |
return;
|
2077 |
} |
2078 |
/* Cache push/invalidate. Implement as no-op. */
|
2079 |
} |
2080 |
|
2081 |
DISAS_INSN(wddata) |
2082 |
{ |
2083 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2084 |
} |
2085 |
|
2086 |
DISAS_INSN(wdebug) |
2087 |
{ |
2088 |
if (IS_USER(s)) {
|
2089 |
gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
|
2090 |
return;
|
2091 |
} |
2092 |
/* TODO: Implement wdebug. */
|
2093 |
qemu_assert(0, "WDEBUG not implemented"); |
2094 |
} |
2095 |
|
2096 |
DISAS_INSN(trap) |
2097 |
{ |
2098 |
gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf)); |
2099 |
} |
2100 |
|
2101 |
/* ??? FP exceptions are not implemented. Most exceptions are deferred until
|
2102 |
immediately before the next FP instruction is executed. */
|
2103 |
DISAS_INSN(fpu) |
2104 |
{ |
2105 |
uint16_t ext; |
2106 |
int32_t offset; |
2107 |
int opmode;
|
2108 |
TCGv_i64 src; |
2109 |
TCGv_i64 dest; |
2110 |
TCGv_i64 res; |
2111 |
TCGv tmp32; |
2112 |
int round;
|
2113 |
int set_dest;
|
2114 |
int opsize;
|
2115 |
|
2116 |
ext = lduw_code(s->pc); |
2117 |
s->pc += 2;
|
2118 |
opmode = ext & 0x7f;
|
2119 |
switch ((ext >> 13) & 7) { |
2120 |
case 0: case 2: |
2121 |
break;
|
2122 |
case 1: |
2123 |
goto undef;
|
2124 |
case 3: /* fmove out */ |
2125 |
src = FREG(ext, 7);
|
2126 |
tmp32 = tcg_temp_new_i32(); |
2127 |
/* fmove */
|
2128 |
/* ??? TODO: Proper behavior on overflow. */
|
2129 |
switch ((ext >> 10) & 7) { |
2130 |
case 0: |
2131 |
opsize = OS_LONG; |
2132 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
2133 |
break;
|
2134 |
case 1: |
2135 |
opsize = OS_SINGLE; |
2136 |
gen_helper_f64_to_f32(tmp32, cpu_env, src); |
2137 |
break;
|
2138 |
case 4: |
2139 |
opsize = OS_WORD; |
2140 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
2141 |
break;
|
2142 |
case 5: /* OS_DOUBLE */ |
2143 |
tcg_gen_mov_i32(tmp32, AREG(insn, 0));
|
2144 |
switch ((insn >> 3) & 7) { |
2145 |
case 2: |
2146 |
case 3: |
2147 |
break;
|
2148 |
case 4: |
2149 |
tcg_gen_addi_i32(tmp32, tmp32, -8);
|
2150 |
break;
|
2151 |
case 5: |
2152 |
offset = ldsw_code(s->pc); |
2153 |
s->pc += 2;
|
2154 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
2155 |
break;
|
2156 |
default:
|
2157 |
goto undef;
|
2158 |
} |
2159 |
gen_store64(s, tmp32, src); |
2160 |
switch ((insn >> 3) & 7) { |
2161 |
case 3: |
2162 |
tcg_gen_addi_i32(tmp32, tmp32, 8);
|
2163 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2164 |
break;
|
2165 |
case 4: |
2166 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2167 |
break;
|
2168 |
} |
2169 |
tcg_temp_free_i32(tmp32); |
2170 |
return;
|
2171 |
case 6: |
2172 |
opsize = OS_BYTE; |
2173 |
gen_helper_f64_to_i32(tmp32, cpu_env, src); |
2174 |
break;
|
2175 |
default:
|
2176 |
goto undef;
|
2177 |
} |
2178 |
DEST_EA(insn, opsize, tmp32, NULL);
|
2179 |
tcg_temp_free_i32(tmp32); |
2180 |
return;
|
2181 |
case 4: /* fmove to control register. */ |
2182 |
switch ((ext >> 10) & 7) { |
2183 |
case 4: /* FPCR */ |
2184 |
/* Not implemented. Ignore writes. */
|
2185 |
break;
|
2186 |
case 1: /* FPIAR */ |
2187 |
case 2: /* FPSR */ |
2188 |
default:
|
2189 |
cpu_abort(NULL, "Unimplemented: fmove to control %d", |
2190 |
(ext >> 10) & 7); |
2191 |
} |
2192 |
break;
|
2193 |
case 5: /* fmove from control register. */ |
2194 |
switch ((ext >> 10) & 7) { |
2195 |
case 4: /* FPCR */ |
2196 |
/* Not implemented. Always return zero. */
|
2197 |
tmp32 = gen_im32(0);
|
2198 |
break;
|
2199 |
case 1: /* FPIAR */ |
2200 |
case 2: /* FPSR */ |
2201 |
default:
|
2202 |
cpu_abort(NULL, "Unimplemented: fmove from control %d", |
2203 |
(ext >> 10) & 7); |
2204 |
goto undef;
|
2205 |
} |
2206 |
DEST_EA(insn, OS_LONG, tmp32, NULL);
|
2207 |
break;
|
2208 |
case 6: /* fmovem */ |
2209 |
case 7: |
2210 |
{ |
2211 |
TCGv addr; |
2212 |
uint16_t mask; |
2213 |
int i;
|
2214 |
if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0) |
2215 |
goto undef;
|
2216 |
tmp32 = gen_lea(s, insn, OS_LONG); |
2217 |
if (IS_NULL_QREG(tmp32)) {
|
2218 |
gen_addr_fault(s); |
2219 |
return;
|
2220 |
} |
2221 |
addr = tcg_temp_new_i32(); |
2222 |
tcg_gen_mov_i32(addr, tmp32); |
2223 |
mask = 0x80;
|
2224 |
for (i = 0; i < 8; i++) { |
2225 |
if (ext & mask) {
|
2226 |
s->is_mem = 1;
|
2227 |
dest = FREG(i, 0);
|
2228 |
if (ext & (1 << 13)) { |
2229 |
/* store */
|
2230 |
tcg_gen_qemu_stf64(dest, addr, IS_USER(s)); |
2231 |
} else {
|
2232 |
/* load */
|
2233 |
tcg_gen_qemu_ldf64(dest, addr, IS_USER(s)); |
2234 |
} |
2235 |
if (ext & (mask - 1)) |
2236 |
tcg_gen_addi_i32(addr, addr, 8);
|
2237 |
} |
2238 |
mask >>= 1;
|
2239 |
} |
2240 |
tcg_temp_free_i32(addr); |
2241 |
} |
2242 |
return;
|
2243 |
} |
2244 |
if (ext & (1 << 14)) { |
2245 |
/* Source effective address. */
|
2246 |
switch ((ext >> 10) & 7) { |
2247 |
case 0: opsize = OS_LONG; break; |
2248 |
case 1: opsize = OS_SINGLE; break; |
2249 |
case 4: opsize = OS_WORD; break; |
2250 |
case 5: opsize = OS_DOUBLE; break; |
2251 |
case 6: opsize = OS_BYTE; break; |
2252 |
default:
|
2253 |
goto undef;
|
2254 |
} |
2255 |
if (opsize == OS_DOUBLE) {
|
2256 |
tmp32 = tcg_temp_new_i32(); |
2257 |
tcg_gen_mov_i32(tmp32, AREG(insn, 0));
|
2258 |
switch ((insn >> 3) & 7) { |
2259 |
case 2: |
2260 |
case 3: |
2261 |
break;
|
2262 |
case 4: |
2263 |
tcg_gen_addi_i32(tmp32, tmp32, -8);
|
2264 |
break;
|
2265 |
case 5: |
2266 |
offset = ldsw_code(s->pc); |
2267 |
s->pc += 2;
|
2268 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
2269 |
break;
|
2270 |
case 7: |
2271 |
offset = ldsw_code(s->pc); |
2272 |
offset += s->pc - 2;
|
2273 |
s->pc += 2;
|
2274 |
tcg_gen_addi_i32(tmp32, tmp32, offset); |
2275 |
break;
|
2276 |
default:
|
2277 |
goto undef;
|
2278 |
} |
2279 |
src = gen_load64(s, tmp32); |
2280 |
switch ((insn >> 3) & 7) { |
2281 |
case 3: |
2282 |
tcg_gen_addi_i32(tmp32, tmp32, 8);
|
2283 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2284 |
break;
|
2285 |
case 4: |
2286 |
tcg_gen_mov_i32(AREG(insn, 0), tmp32);
|
2287 |
break;
|
2288 |
} |
2289 |
tcg_temp_free_i32(tmp32); |
2290 |
} else {
|
2291 |
SRC_EA(tmp32, opsize, 1, NULL); |
2292 |
src = tcg_temp_new_i64(); |
2293 |
switch (opsize) {
|
2294 |
case OS_LONG:
|
2295 |
case OS_WORD:
|
2296 |
case OS_BYTE:
|
2297 |
gen_helper_i32_to_f64(src, cpu_env, tmp32); |
2298 |
break;
|
2299 |
case OS_SINGLE:
|
2300 |
gen_helper_f32_to_f64(src, cpu_env, tmp32); |
2301 |
break;
|
2302 |
} |
2303 |
} |
2304 |
} else {
|
2305 |
/* Source register. */
|
2306 |
src = FREG(ext, 10);
|
2307 |
} |
2308 |
dest = FREG(ext, 7);
|
2309 |
res = tcg_temp_new_i64(); |
2310 |
if (opmode != 0x3a) |
2311 |
tcg_gen_mov_f64(res, dest); |
2312 |
round = 1;
|
2313 |
set_dest = 1;
|
2314 |
switch (opmode) {
|
2315 |
case 0: case 0x40: case 0x44: /* fmove */ |
2316 |
tcg_gen_mov_f64(res, src); |
2317 |
break;
|
2318 |
case 1: /* fint */ |
2319 |
gen_helper_iround_f64(res, cpu_env, src); |
2320 |
round = 0;
|
2321 |
break;
|
2322 |
case 3: /* fintrz */ |
2323 |
gen_helper_itrunc_f64(res, cpu_env, src); |
2324 |
round = 0;
|
2325 |
break;
|
2326 |
case 4: case 0x41: case 0x45: /* fsqrt */ |
2327 |
gen_helper_sqrt_f64(res, cpu_env, src); |
2328 |
break;
|
2329 |
case 0x18: case 0x58: case 0x5c: /* fabs */ |
2330 |
gen_helper_abs_f64(res, src); |
2331 |
break;
|
2332 |
case 0x1a: case 0x5a: case 0x5e: /* fneg */ |
2333 |
gen_helper_chs_f64(res, src); |
2334 |
break;
|
2335 |
case 0x20: case 0x60: case 0x64: /* fdiv */ |
2336 |
gen_helper_div_f64(res, cpu_env, res, src); |
2337 |
break;
|
2338 |
case 0x22: case 0x62: case 0x66: /* fadd */ |
2339 |
gen_helper_add_f64(res, cpu_env, res, src); |
2340 |
break;
|
2341 |
case 0x23: case 0x63: case 0x67: /* fmul */ |
2342 |
gen_helper_mul_f64(res, cpu_env, res, src); |
2343 |
break;
|
2344 |
case 0x28: case 0x68: case 0x6c: /* fsub */ |
2345 |
gen_helper_sub_f64(res, cpu_env, res, src); |
2346 |
break;
|
2347 |
case 0x38: /* fcmp */ |
2348 |
gen_helper_sub_cmp_f64(res, cpu_env, res, src); |
2349 |
set_dest = 0;
|
2350 |
round = 0;
|
2351 |
break;
|
2352 |
case 0x3a: /* ftst */ |
2353 |
tcg_gen_mov_f64(res, src); |
2354 |
set_dest = 0;
|
2355 |
round = 0;
|
2356 |
break;
|
2357 |
default:
|
2358 |
goto undef;
|
2359 |
} |
2360 |
if (ext & (1 << 14)) { |
2361 |
tcg_temp_free_i64(src); |
2362 |
} |
2363 |
if (round) {
|
2364 |
if (opmode & 0x40) { |
2365 |
if ((opmode & 0x4) != 0) |
2366 |
round = 0;
|
2367 |
} else if ((s->fpcr & M68K_FPCR_PREC) == 0) { |
2368 |
round = 0;
|
2369 |
} |
2370 |
} |
2371 |
if (round) {
|
2372 |
TCGv tmp = tcg_temp_new_i32(); |
2373 |
gen_helper_f64_to_f32(tmp, cpu_env, res); |
2374 |
gen_helper_f32_to_f64(res, cpu_env, tmp); |
2375 |
tcg_temp_free_i32(tmp); |
2376 |
} |
2377 |
tcg_gen_mov_f64(QREG_FP_RESULT, res); |
2378 |
if (set_dest) {
|
2379 |
tcg_gen_mov_f64(dest, res); |
2380 |
} |
2381 |
tcg_temp_free_i64(res); |
2382 |
return;
|
2383 |
undef:
|
2384 |
/* FIXME: Is this right for offset addressing modes? */
|
2385 |
s->pc -= 2;
|
2386 |
disas_undef_fpu(s, insn); |
2387 |
} |
2388 |
|
2389 |
DISAS_INSN(fbcc) |
2390 |
{ |
2391 |
uint32_t offset; |
2392 |
uint32_t addr; |
2393 |
TCGv flag; |
2394 |
int l1;
|
2395 |
|
2396 |
addr = s->pc; |
2397 |
offset = ldsw_code(s->pc); |
2398 |
s->pc += 2;
|
2399 |
if (insn & (1 << 6)) { |
2400 |
offset = (offset << 16) | lduw_code(s->pc);
|
2401 |
s->pc += 2;
|
2402 |
} |
2403 |
|
2404 |
l1 = gen_new_label(); |
2405 |
/* TODO: Raise BSUN exception. */
|
2406 |
flag = tcg_temp_new(); |
2407 |
gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT); |
2408 |
/* Jump to l1 if condition is true. */
|
2409 |
switch (insn & 0xf) { |
2410 |
case 0: /* f */ |
2411 |
break;
|
2412 |
case 1: /* eq (=0) */ |
2413 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
2414 |
break;
|
2415 |
case 2: /* ogt (=1) */ |
2416 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
|
2417 |
break;
|
2418 |
case 3: /* oge (=0 or =1) */ |
2419 |
tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
|
2420 |
break;
|
2421 |
case 4: /* olt (=-1) */ |
2422 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
|
2423 |
break;
|
2424 |
case 5: /* ole (=-1 or =0) */ |
2425 |
tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
|
2426 |
break;
|
2427 |
case 6: /* ogl (=-1 or =1) */ |
2428 |
tcg_gen_andi_i32(flag, flag, 1);
|
2429 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
2430 |
break;
|
2431 |
case 7: /* or (=2) */ |
2432 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
|
2433 |
break;
|
2434 |
case 8: /* un (<2) */ |
2435 |
tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
|
2436 |
break;
|
2437 |
case 9: /* ueq (=0 or =2) */ |
2438 |
tcg_gen_andi_i32(flag, flag, 1);
|
2439 |
tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
|
2440 |
break;
|
2441 |
case 10: /* ugt (>0) */ |
2442 |
tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
|
2443 |
break;
|
2444 |
case 11: /* uge (>=0) */ |
2445 |
tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
|
2446 |
break;
|
2447 |
case 12: /* ult (=-1 or =2) */ |
2448 |
tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
|
2449 |
break;
|
2450 |
case 13: /* ule (!=1) */ |
2451 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
|
2452 |
break;
|
2453 |
case 14: /* ne (!=0) */ |
2454 |
tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
|
2455 |
break;
|
2456 |
case 15: /* t */ |
2457 |
tcg_gen_br(l1); |
2458 |
break;
|
2459 |
} |
2460 |
gen_jmp_tb(s, 0, s->pc);
|
2461 |
gen_set_label(l1); |
2462 |
gen_jmp_tb(s, 1, addr + offset);
|
2463 |
} |
2464 |
|
2465 |
DISAS_INSN(frestore) |
2466 |
{ |
2467 |
/* TODO: Implement frestore. */
|
2468 |
qemu_assert(0, "FRESTORE not implemented"); |
2469 |
} |
2470 |
|
2471 |
DISAS_INSN(fsave) |
2472 |
{ |
2473 |
/* TODO: Implement fsave. */
|
2474 |
qemu_assert(0, "FSAVE not implemented"); |
2475 |
} |
2476 |
|
2477 |
static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper) |
2478 |
{ |
2479 |
TCGv tmp = tcg_temp_new(); |
2480 |
if (s->env->macsr & MACSR_FI) {
|
2481 |
if (upper)
|
2482 |
tcg_gen_andi_i32(tmp, val, 0xffff0000);
|
2483 |
else
|
2484 |
tcg_gen_shli_i32(tmp, val, 16);
|
2485 |
} else if (s->env->macsr & MACSR_SU) { |
2486 |
if (upper)
|
2487 |
tcg_gen_sari_i32(tmp, val, 16);
|
2488 |
else
|
2489 |
tcg_gen_ext16s_i32(tmp, val); |
2490 |
} else {
|
2491 |
if (upper)
|
2492 |
tcg_gen_shri_i32(tmp, val, 16);
|
2493 |
else
|
2494 |
tcg_gen_ext16u_i32(tmp, val); |
2495 |
} |
2496 |
return tmp;
|
2497 |
} |
2498 |
|
2499 |
static void gen_mac_clear_flags(void) |
2500 |
{ |
2501 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, |
2502 |
~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV)); |
2503 |
} |
2504 |
|
2505 |
DISAS_INSN(mac) |
2506 |
{ |
2507 |
TCGv rx; |
2508 |
TCGv ry; |
2509 |
uint16_t ext; |
2510 |
int acc;
|
2511 |
TCGv tmp; |
2512 |
TCGv addr; |
2513 |
TCGv loadval; |
2514 |
int dual;
|
2515 |
TCGv saved_flags; |
2516 |
|
2517 |
if (!s->done_mac) {
|
2518 |
s->mactmp = tcg_temp_new_i64(); |
2519 |
s->done_mac = 1;
|
2520 |
} |
2521 |
|
2522 |
ext = lduw_code(s->pc); |
2523 |
s->pc += 2;
|
2524 |
|
2525 |
acc = ((insn >> 7) & 1) | ((ext >> 3) & 2); |
2526 |
dual = ((insn & 0x30) != 0 && (ext & 3) != 0); |
2527 |
if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
|
2528 |
disas_undef(s, insn); |
2529 |
return;
|
2530 |
} |
2531 |
if (insn & 0x30) { |
2532 |
/* MAC with load. */
|
2533 |
tmp = gen_lea(s, insn, OS_LONG); |
2534 |
addr = tcg_temp_new(); |
2535 |
tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK); |
2536 |
/* Load the value now to ensure correct exception behavior.
|
2537 |
Perform writeback after reading the MAC inputs. */
|
2538 |
loadval = gen_load(s, OS_LONG, addr, 0);
|
2539 |
|
2540 |
acc ^= 1;
|
2541 |
rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12); |
2542 |
ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0); |
2543 |
} else {
|
2544 |
loadval = addr = NULL_QREG; |
2545 |
rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
2546 |
ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2547 |
} |
2548 |
|
2549 |
gen_mac_clear_flags(); |
2550 |
#if 0
|
2551 |
l1 = -1;
|
2552 |
/* Disabled because conditional branches clobber temporary vars. */
|
2553 |
if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
|
2554 |
/* Skip the multiply if we know we will ignore it. */
|
2555 |
l1 = gen_new_label();
|
2556 |
tmp = tcg_temp_new();
|
2557 |
tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
|
2558 |
gen_op_jmp_nz32(tmp, l1);
|
2559 |
}
|
2560 |
#endif
|
2561 |
|
2562 |
if ((ext & 0x0800) == 0) { |
2563 |
/* Word. */
|
2564 |
rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0); |
2565 |
ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0); |
2566 |
} |
2567 |
if (s->env->macsr & MACSR_FI) {
|
2568 |
gen_helper_macmulf(s->mactmp, cpu_env, rx, ry); |
2569 |
} else {
|
2570 |
if (s->env->macsr & MACSR_SU)
|
2571 |
gen_helper_macmuls(s->mactmp, cpu_env, rx, ry); |
2572 |
else
|
2573 |
gen_helper_macmulu(s->mactmp, cpu_env, rx, ry); |
2574 |
switch ((ext >> 9) & 3) { |
2575 |
case 1: |
2576 |
tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
|
2577 |
break;
|
2578 |
case 3: |
2579 |
tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
|
2580 |
break;
|
2581 |
} |
2582 |
} |
2583 |
|
2584 |
if (dual) {
|
2585 |
/* Save the overflow flag from the multiply. */
|
2586 |
saved_flags = tcg_temp_new(); |
2587 |
tcg_gen_mov_i32(saved_flags, QREG_MACSR); |
2588 |
} else {
|
2589 |
saved_flags = NULL_QREG; |
2590 |
} |
2591 |
|
2592 |
#if 0
|
2593 |
/* Disabled because conditional branches clobber temporary vars. */
|
2594 |
if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
|
2595 |
/* Skip the accumulate if the value is already saturated. */
|
2596 |
l1 = gen_new_label();
|
2597 |
tmp = tcg_temp_new();
|
2598 |
gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
|
2599 |
gen_op_jmp_nz32(tmp, l1);
|
2600 |
}
|
2601 |
#endif
|
2602 |
|
2603 |
if (insn & 0x100) |
2604 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2605 |
else
|
2606 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2607 |
|
2608 |
if (s->env->macsr & MACSR_FI)
|
2609 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
2610 |
else if (s->env->macsr & MACSR_SU) |
2611 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
2612 |
else
|
2613 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
2614 |
|
2615 |
#if 0
|
2616 |
/* Disabled because conditional branches clobber temporary vars. */
|
2617 |
if (l1 != -1)
|
2618 |
gen_set_label(l1);
|
2619 |
#endif
|
2620 |
|
2621 |
if (dual) {
|
2622 |
/* Dual accumulate variant. */
|
2623 |
acc = (ext >> 2) & 3; |
2624 |
/* Restore the overflow flag from the multiplier. */
|
2625 |
tcg_gen_mov_i32(QREG_MACSR, saved_flags); |
2626 |
#if 0
|
2627 |
/* Disabled because conditional branches clobber temporary vars. */
|
2628 |
if ((s->env->macsr & MACSR_OMC) != 0) {
|
2629 |
/* Skip the accumulate if the value is already saturated. */
|
2630 |
l1 = gen_new_label();
|
2631 |
tmp = tcg_temp_new();
|
2632 |
gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
|
2633 |
gen_op_jmp_nz32(tmp, l1);
|
2634 |
}
|
2635 |
#endif
|
2636 |
if (ext & 2) |
2637 |
tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2638 |
else
|
2639 |
tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); |
2640 |
if (s->env->macsr & MACSR_FI)
|
2641 |
gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); |
2642 |
else if (s->env->macsr & MACSR_SU) |
2643 |
gen_helper_macsats(cpu_env, tcg_const_i32(acc)); |
2644 |
else
|
2645 |
gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); |
2646 |
#if 0
|
2647 |
/* Disabled because conditional branches clobber temporary vars. */
|
2648 |
if (l1 != -1)
|
2649 |
gen_set_label(l1);
|
2650 |
#endif
|
2651 |
} |
2652 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc)); |
2653 |
|
2654 |
if (insn & 0x30) { |
2655 |
TCGv rw; |
2656 |
rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); |
2657 |
tcg_gen_mov_i32(rw, loadval); |
2658 |
/* FIXME: Should address writeback happen with the masked or
|
2659 |
unmasked value? */
|
2660 |
switch ((insn >> 3) & 7) { |
2661 |
case 3: /* Post-increment. */ |
2662 |
tcg_gen_addi_i32(AREG(insn, 0), addr, 4); |
2663 |
break;
|
2664 |
case 4: /* Pre-decrement. */ |
2665 |
tcg_gen_mov_i32(AREG(insn, 0), addr);
|
2666 |
} |
2667 |
} |
2668 |
} |
2669 |
|
2670 |
DISAS_INSN(from_mac) |
2671 |
{ |
2672 |
TCGv rx; |
2673 |
TCGv_i64 acc; |
2674 |
int accnum;
|
2675 |
|
2676 |
rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2677 |
accnum = (insn >> 9) & 3; |
2678 |
acc = MACREG(accnum); |
2679 |
if (s->env->macsr & MACSR_FI) {
|
2680 |
gen_helper_get_macf(rx, cpu_env, acc); |
2681 |
} else if ((s->env->macsr & MACSR_OMC) == 0) { |
2682 |
tcg_gen_trunc_i64_i32(rx, acc); |
2683 |
} else if (s->env->macsr & MACSR_SU) { |
2684 |
gen_helper_get_macs(rx, acc); |
2685 |
} else {
|
2686 |
gen_helper_get_macu(rx, acc); |
2687 |
} |
2688 |
if (insn & 0x40) { |
2689 |
tcg_gen_movi_i64(acc, 0);
|
2690 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
2691 |
} |
2692 |
} |
2693 |
|
2694 |
DISAS_INSN(move_mac) |
2695 |
{ |
2696 |
/* FIXME: This can be done without a helper. */
|
2697 |
int src;
|
2698 |
TCGv dest; |
2699 |
src = insn & 3;
|
2700 |
dest = tcg_const_i32((insn >> 9) & 3); |
2701 |
gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src)); |
2702 |
gen_mac_clear_flags(); |
2703 |
gen_helper_mac_set_flags(cpu_env, dest); |
2704 |
} |
2705 |
|
2706 |
DISAS_INSN(from_macsr) |
2707 |
{ |
2708 |
TCGv reg; |
2709 |
|
2710 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2711 |
tcg_gen_mov_i32(reg, QREG_MACSR); |
2712 |
} |
2713 |
|
2714 |
DISAS_INSN(from_mask) |
2715 |
{ |
2716 |
TCGv reg; |
2717 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2718 |
tcg_gen_mov_i32(reg, QREG_MAC_MASK); |
2719 |
} |
2720 |
|
2721 |
DISAS_INSN(from_mext) |
2722 |
{ |
2723 |
TCGv reg; |
2724 |
TCGv acc; |
2725 |
reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); |
2726 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
2727 |
if (s->env->macsr & MACSR_FI)
|
2728 |
gen_helper_get_mac_extf(reg, cpu_env, acc); |
2729 |
else
|
2730 |
gen_helper_get_mac_exti(reg, cpu_env, acc); |
2731 |
} |
2732 |
|
2733 |
DISAS_INSN(macsr_to_ccr) |
2734 |
{ |
2735 |
tcg_gen_movi_i32(QREG_CC_X, 0);
|
2736 |
tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
|
2737 |
s->cc_op = CC_OP_FLAGS; |
2738 |
} |
2739 |
|
2740 |
DISAS_INSN(to_mac) |
2741 |
{ |
2742 |
TCGv_i64 acc; |
2743 |
TCGv val; |
2744 |
int accnum;
|
2745 |
accnum = (insn >> 9) & 3; |
2746 |
acc = MACREG(accnum); |
2747 |
SRC_EA(val, OS_LONG, 0, NULL); |
2748 |
if (s->env->macsr & MACSR_FI) {
|
2749 |
tcg_gen_ext_i32_i64(acc, val); |
2750 |
tcg_gen_shli_i64(acc, acc, 8);
|
2751 |
} else if (s->env->macsr & MACSR_SU) { |
2752 |
tcg_gen_ext_i32_i64(acc, val); |
2753 |
} else {
|
2754 |
tcg_gen_extu_i32_i64(acc, val); |
2755 |
} |
2756 |
tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); |
2757 |
gen_mac_clear_flags(); |
2758 |
gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum)); |
2759 |
} |
2760 |
|
2761 |
DISAS_INSN(to_macsr) |
2762 |
{ |
2763 |
TCGv val; |
2764 |
SRC_EA(val, OS_LONG, 0, NULL); |
2765 |
gen_helper_set_macsr(cpu_env, val); |
2766 |
gen_lookup_tb(s); |
2767 |
} |
2768 |
|
2769 |
DISAS_INSN(to_mask) |
2770 |
{ |
2771 |
TCGv val; |
2772 |
SRC_EA(val, OS_LONG, 0, NULL); |
2773 |
tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
|
2774 |
} |
2775 |
|
2776 |
DISAS_INSN(to_mext) |
2777 |
{ |
2778 |
TCGv val; |
2779 |
TCGv acc; |
2780 |
SRC_EA(val, OS_LONG, 0, NULL); |
2781 |
acc = tcg_const_i32((insn & 0x400) ? 2 : 0); |
2782 |
if (s->env->macsr & MACSR_FI)
|
2783 |
gen_helper_set_mac_extf(cpu_env, val, acc); |
2784 |
else if (s->env->macsr & MACSR_SU) |
2785 |
gen_helper_set_mac_exts(cpu_env, val, acc); |
2786 |
else
|
2787 |
gen_helper_set_mac_extu(cpu_env, val, acc); |
2788 |
} |
2789 |
|
2790 |
static disas_proc opcode_table[65536]; |
2791 |
|
2792 |
static void |
2793 |
register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask) |
2794 |
{ |
2795 |
int i;
|
2796 |
int from;
|
2797 |
int to;
|
2798 |
|
2799 |
/* Sanity check. All set bits must be included in the mask. */
|
2800 |
if (opcode & ~mask) {
|
2801 |
fprintf(stderr, |
2802 |
"qemu internal error: bogus opcode definition %04x/%04x\n",
|
2803 |
opcode, mask); |
2804 |
abort(); |
2805 |
} |
2806 |
/* This could probably be cleverer. For now just optimize the case where
|
2807 |
the top bits are known. */
|
2808 |
/* Find the first zero bit in the mask. */
|
2809 |
i = 0x8000;
|
2810 |
while ((i & mask) != 0) |
2811 |
i >>= 1;
|
2812 |
/* Iterate over all combinations of this and lower bits. */
|
2813 |
if (i == 0) |
2814 |
i = 1;
|
2815 |
else
|
2816 |
i <<= 1;
|
2817 |
from = opcode & ~(i - 1);
|
2818 |
to = from + i; |
2819 |
for (i = from; i < to; i++) {
|
2820 |
if ((i & mask) == opcode)
|
2821 |
opcode_table[i] = proc; |
2822 |
} |
2823 |
} |
2824 |
|
2825 |
/* Register m68k opcode handlers. Order is important.
|
2826 |
Later insn override earlier ones. */
|
2827 |
void register_m68k_insns (CPUM68KState *env)
|
2828 |
{ |
2829 |
#define INSN(name, opcode, mask, feature) do { \ |
2830 |
if (m68k_feature(env, M68K_FEATURE_##feature)) \ |
2831 |
register_opcode(disas_##name, 0x##opcode, 0x##mask); \ |
2832 |
} while(0) |
2833 |
INSN(undef, 0000, 0000, CF_ISA_A); |
2834 |
INSN(arith_im, 0080, fff8, CF_ISA_A);
|
2835 |
INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
|
2836 |
INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
|
2837 |
INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
|
2838 |
INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
|
2839 |
INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
|
2840 |
INSN(arith_im, 0280, fff8, CF_ISA_A);
|
2841 |
INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
|
2842 |
INSN(arith_im, 0480, fff8, CF_ISA_A);
|
2843 |
INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
|
2844 |
INSN(arith_im, 0680, fff8, CF_ISA_A);
|
2845 |
INSN(bitop_im, 0800, ffc0, CF_ISA_A);
|
2846 |
INSN(bitop_im, 0840, ffc0, CF_ISA_A);
|
2847 |
INSN(bitop_im, 0880, ffc0, CF_ISA_A);
|
2848 |
INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
|
2849 |
INSN(arith_im, 0a80, fff8, CF_ISA_A);
|
2850 |
INSN(arith_im, 0c00, ff38, CF_ISA_A);
|
2851 |
INSN(move, 1000, f000, CF_ISA_A);
|
2852 |
INSN(move, 2000, f000, CF_ISA_A);
|
2853 |
INSN(move, 3000, f000, CF_ISA_A);
|
2854 |
INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC); |
2855 |
INSN(negx, 4080, fff8, CF_ISA_A);
|
2856 |
INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
|
2857 |
INSN(lea, 41c0, f1c0, CF_ISA_A);
|
2858 |
INSN(clr, 4200, ff00, CF_ISA_A);
|
2859 |
INSN(undef, 42c0, ffc0, CF_ISA_A);
|
2860 |
INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
|
2861 |
INSN(neg, 4480, fff8, CF_ISA_A);
|
2862 |
INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
|
2863 |
INSN(not, 4680, fff8, CF_ISA_A);
|
2864 |
INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
|
2865 |
INSN(pea, 4840, ffc0, CF_ISA_A);
|
2866 |
INSN(swap, 4840, fff8, CF_ISA_A);
|
2867 |
INSN(movem, 48c0, fbc0, CF_ISA_A);
|
2868 |
INSN(ext, 4880, fff8, CF_ISA_A);
|
2869 |
INSN(ext, 48c0, fff8, CF_ISA_A);
|
2870 |
INSN(ext, 49c0, fff8, CF_ISA_A);
|
2871 |
INSN(tst, 4a00, ff00, CF_ISA_A);
|
2872 |
INSN(tas, 4ac0, ffc0, CF_ISA_B);
|
2873 |
INSN(halt, 4ac8, ffff, CF_ISA_A);
|
2874 |
INSN(pulse, 4acc, ffff, CF_ISA_A);
|
2875 |
INSN(illegal, 4afc, ffff, CF_ISA_A);
|
2876 |
INSN(mull, 4c00, ffc0, CF_ISA_A);
|
2877 |
INSN(divl, 4c40, ffc0, CF_ISA_A);
|
2878 |
INSN(sats, 4c80, fff8, CF_ISA_B);
|
2879 |
INSN(trap, 4e40, fff0, CF_ISA_A);
|
2880 |
INSN(link, 4e50, fff8, CF_ISA_A);
|
2881 |
INSN(unlk, 4e58, fff8, CF_ISA_A);
|
2882 |
INSN(move_to_usp, 4e60, fff8, USP);
|
2883 |
INSN(move_from_usp, 4e68, fff8, USP);
|
2884 |
INSN(nop, 4e71, ffff, CF_ISA_A);
|
2885 |
INSN(stop, 4e72, ffff, CF_ISA_A);
|
2886 |
INSN(rte, 4e73, ffff, CF_ISA_A);
|
2887 |
INSN(rts, 4e75, ffff, CF_ISA_A);
|
2888 |
INSN(movec, 4e7b, ffff, CF_ISA_A);
|
2889 |
INSN(jump, 4e80, ffc0, CF_ISA_A);
|
2890 |
INSN(jump, 4ec0, ffc0, CF_ISA_A);
|
2891 |
INSN(addsubq, 5180, f1c0, CF_ISA_A);
|
2892 |
INSN(scc, 50c0, f0f8, CF_ISA_A);
|
2893 |
INSN(addsubq, 5080, f1c0, CF_ISA_A);
|
2894 |
INSN(tpf, 51f8, fff8, CF_ISA_A); |
2895 |
|
2896 |
/* Branch instructions. */
|
2897 |
INSN(branch, 6000, f000, CF_ISA_A);
|
2898 |
/* Disable long branch instructions, then add back the ones we want. */
|
2899 |
INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */ |
2900 |
INSN(branch, 60ff, f0ff, CF_ISA_B); |
2901 |
INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */ |
2902 |
INSN(branch, 60ff, ffff, BRAL); |
2903 |
|
2904 |
INSN(moveq, 7000, f100, CF_ISA_A);
|
2905 |
INSN(mvzs, 7100, f100, CF_ISA_B);
|
2906 |
INSN(or, 8000, f000, CF_ISA_A);
|
2907 |
INSN(divw, 80c0, f0c0, CF_ISA_A);
|
2908 |
INSN(addsub, 9000, f000, CF_ISA_A);
|
2909 |
INSN(subx, 9180, f1f8, CF_ISA_A);
|
2910 |
INSN(suba, 91c0, f1c0, CF_ISA_A);
|
2911 |
|
2912 |
INSN(undef_mac, a000, f000, CF_ISA_A); |
2913 |
INSN(mac, a000, f100, CF_EMAC); |
2914 |
INSN(from_mac, a180, f9b0, CF_EMAC); |
2915 |
INSN(move_mac, a110, f9fc, CF_EMAC); |
2916 |
INSN(from_macsr,a980, f9f0, CF_EMAC); |
2917 |
INSN(from_mask, ad80, fff0, CF_EMAC); |
2918 |
INSN(from_mext, ab80, fbf0, CF_EMAC); |
2919 |
INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC); |
2920 |
INSN(to_mac, a100, f9c0, CF_EMAC); |
2921 |
INSN(to_macsr, a900, ffc0, CF_EMAC); |
2922 |
INSN(to_mext, ab00, fbc0, CF_EMAC); |
2923 |
INSN(to_mask, ad00, ffc0, CF_EMAC); |
2924 |
|
2925 |
INSN(mov3q, a140, f1c0, CF_ISA_B); |
2926 |
INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
|
2927 |
INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
|
2928 |
INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
|
2929 |
INSN(cmp, b080, f1c0, CF_ISA_A); |
2930 |
INSN(cmpa, b1c0, f1c0, CF_ISA_A); |
2931 |
INSN(eor, b180, f1c0, CF_ISA_A); |
2932 |
INSN(and, c000, f000, CF_ISA_A); |
2933 |
INSN(mulw, c0c0, f0c0, CF_ISA_A); |
2934 |
INSN(addsub, d000, f000, CF_ISA_A); |
2935 |
INSN(addx, d180, f1f8, CF_ISA_A); |
2936 |
INSN(adda, d1c0, f1c0, CF_ISA_A); |
2937 |
INSN(shift_im, e080, f0f0, CF_ISA_A); |
2938 |
INSN(shift_reg, e0a0, f0f0, CF_ISA_A); |
2939 |
INSN(undef_fpu, f000, f000, CF_ISA_A); |
2940 |
INSN(fpu, f200, ffc0, CF_FPU); |
2941 |
INSN(fbcc, f280, ffc0, CF_FPU); |
2942 |
INSN(frestore, f340, ffc0, CF_FPU); |
2943 |
INSN(fsave, f340, ffc0, CF_FPU); |
2944 |
INSN(intouch, f340, ffc0, CF_ISA_A); |
2945 |
INSN(cpushl, f428, ff38, CF_ISA_A); |
2946 |
INSN(wddata, fb00, ff00, CF_ISA_A); |
2947 |
INSN(wdebug, fbc0, ffc0, CF_ISA_A); |
2948 |
#undef INSN
|
2949 |
} |
2950 |
|
2951 |
/* ??? Some of this implementation is not exception safe. We should always
|
2952 |
write back the result to memory before setting the condition codes. */
|
2953 |
static void disas_m68k_insn(CPUState * env, DisasContext *s) |
2954 |
{ |
2955 |
uint16_t insn; |
2956 |
|
2957 |
insn = lduw_code(s->pc); |
2958 |
s->pc += 2;
|
2959 |
|
2960 |
opcode_table[insn](s, insn); |
2961 |
} |
2962 |
|
2963 |
/* generate intermediate code for basic block 'tb'. */
|
2964 |
static inline void |
2965 |
gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, |
2966 |
int search_pc)
|
2967 |
{ |
2968 |
DisasContext dc1, *dc = &dc1; |
2969 |
uint16_t *gen_opc_end; |
2970 |
CPUBreakpoint *bp; |
2971 |
int j, lj;
|
2972 |
target_ulong pc_start; |
2973 |
int pc_offset;
|
2974 |
int last_cc_op;
|
2975 |
int num_insns;
|
2976 |
int max_insns;
|
2977 |
|
2978 |
/* generate intermediate code */
|
2979 |
pc_start = tb->pc; |
2980 |
|
2981 |
dc->tb = tb; |
2982 |
|
2983 |
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; |
2984 |
|
2985 |
dc->env = env; |
2986 |
dc->is_jmp = DISAS_NEXT; |
2987 |
dc->pc = pc_start; |
2988 |
dc->cc_op = CC_OP_DYNAMIC; |
2989 |
dc->singlestep_enabled = env->singlestep_enabled; |
2990 |
dc->fpcr = env->fpcr; |
2991 |
dc->user = (env->sr & SR_S) == 0;
|
2992 |
dc->is_mem = 0;
|
2993 |
dc->done_mac = 0;
|
2994 |
lj = -1;
|
2995 |
num_insns = 0;
|
2996 |
max_insns = tb->cflags & CF_COUNT_MASK; |
2997 |
if (max_insns == 0) |
2998 |
max_insns = CF_COUNT_MASK; |
2999 |
|
3000 |
gen_icount_start(); |
3001 |
do {
|
3002 |
pc_offset = dc->pc - pc_start; |
3003 |
gen_throws_exception = NULL;
|
3004 |
if (unlikely(!TAILQ_EMPTY(&env->breakpoints))) {
|
3005 |
TAILQ_FOREACH(bp, &env->breakpoints, entry) { |
3006 |
if (bp->pc == dc->pc) {
|
3007 |
gen_exception(dc, dc->pc, EXCP_DEBUG); |
3008 |
dc->is_jmp = DISAS_JUMP; |
3009 |
break;
|
3010 |
} |
3011 |
} |
3012 |
if (dc->is_jmp)
|
3013 |
break;
|
3014 |
} |
3015 |
if (search_pc) {
|
3016 |
j = gen_opc_ptr - gen_opc_buf; |
3017 |
if (lj < j) {
|
3018 |
lj++; |
3019 |
while (lj < j)
|
3020 |
gen_opc_instr_start[lj++] = 0;
|
3021 |
} |
3022 |
gen_opc_pc[lj] = dc->pc; |
3023 |
gen_opc_instr_start[lj] = 1;
|
3024 |
gen_opc_icount[lj] = num_insns; |
3025 |
} |
3026 |
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) |
3027 |
gen_io_start(); |
3028 |
last_cc_op = dc->cc_op; |
3029 |
dc->insn_pc = dc->pc; |
3030 |
disas_m68k_insn(env, dc); |
3031 |
num_insns++; |
3032 |
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
|
3033 |
!env->singlestep_enabled && |
3034 |
!singlestep && |
3035 |
(pc_offset) < (TARGET_PAGE_SIZE - 32) &&
|
3036 |
num_insns < max_insns); |
3037 |
|
3038 |
if (tb->cflags & CF_LAST_IO)
|
3039 |
gen_io_end(); |
3040 |
if (unlikely(env->singlestep_enabled)) {
|
3041 |
/* Make sure the pc is updated, and raise a debug exception. */
|
3042 |
if (!dc->is_jmp) {
|
3043 |
gen_flush_cc_op(dc); |
3044 |
tcg_gen_movi_i32(QREG_PC, dc->pc); |
3045 |
} |
3046 |
gen_helper_raise_exception(tcg_const_i32(EXCP_DEBUG)); |
3047 |
} else {
|
3048 |
switch(dc->is_jmp) {
|
3049 |
case DISAS_NEXT:
|
3050 |
gen_flush_cc_op(dc); |
3051 |
gen_jmp_tb(dc, 0, dc->pc);
|
3052 |
break;
|
3053 |
default:
|
3054 |
case DISAS_JUMP:
|
3055 |
case DISAS_UPDATE:
|
3056 |
gen_flush_cc_op(dc); |
3057 |
/* indicate that the hash table must be used to find the next TB */
|
3058 |
tcg_gen_exit_tb(0);
|
3059 |
break;
|
3060 |
case DISAS_TB_JUMP:
|
3061 |
/* nothing more to generate */
|
3062 |
break;
|
3063 |
} |
3064 |
} |
3065 |
gen_icount_end(tb, num_insns); |
3066 |
*gen_opc_ptr = INDEX_op_end; |
3067 |
|
3068 |
#ifdef DEBUG_DISAS
|
3069 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
3070 |
qemu_log("----------------\n");
|
3071 |
qemu_log("IN: %s\n", lookup_symbol(pc_start));
|
3072 |
log_target_disas(pc_start, dc->pc - pc_start, 0);
|
3073 |
qemu_log("\n");
|
3074 |
} |
3075 |
#endif
|
3076 |
if (search_pc) {
|
3077 |
j = gen_opc_ptr - gen_opc_buf; |
3078 |
lj++; |
3079 |
while (lj <= j)
|
3080 |
gen_opc_instr_start[lj++] = 0;
|
3081 |
} else {
|
3082 |
tb->size = dc->pc - pc_start; |
3083 |
tb->icount = num_insns; |
3084 |
} |
3085 |
|
3086 |
//optimize_flags();
|
3087 |
//expand_target_qops();
|
3088 |
} |
3089 |
|
3090 |
void gen_intermediate_code(CPUState *env, TranslationBlock *tb)
|
3091 |
{ |
3092 |
gen_intermediate_code_internal(env, tb, 0);
|
3093 |
} |
3094 |
|
3095 |
void gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
|
3096 |
{ |
3097 |
gen_intermediate_code_internal(env, tb, 1);
|
3098 |
} |
3099 |
|
3100 |
void cpu_dump_state(CPUState *env, FILE *f,
|
3101 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
3102 |
int flags)
|
3103 |
{ |
3104 |
int i;
|
3105 |
uint16_t sr; |
3106 |
CPU_DoubleU u; |
3107 |
for (i = 0; i < 8; i++) |
3108 |
{ |
3109 |
u.d = env->fregs[i]; |
3110 |
cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
|
3111 |
i, env->dregs[i], i, env->aregs[i], |
3112 |
i, u.l.upper, u.l.lower, *(double *)&u.d);
|
3113 |
} |
3114 |
cpu_fprintf (f, "PC = %08x ", env->pc);
|
3115 |
sr = env->sr; |
3116 |
cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-', |
3117 |
(sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-', |
3118 |
(sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-'); |
3119 |
cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result); |
3120 |
} |
3121 |
|
3122 |
void gen_pc_load(CPUState *env, TranslationBlock *tb,
|
3123 |
unsigned long searched_pc, int pc_pos, void *puc) |
3124 |
{ |
3125 |
env->pc = gen_opc_pc[pc_pos]; |
3126 |
} |