4 * Copyright (c) 2005-2007 CodeSourcery
5 * Written by Paul Brook
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 #include "disas/disas.h"
30 //#define DEBUG_DISPATCH 1
32 /* Fake floating point. */
33 #define tcg_gen_mov_f64 tcg_gen_mov_i64
34 #define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
35 #define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
37 #define DEFO32(name, offset) static TCGv QREG_##name;
38 #define DEFO64(name, offset) static TCGv_i64 QREG_##name;
39 #define DEFF64(name, offset) static TCGv_i64 QREG_##name;
45 static TCGv_i32 cpu_halted;
47 static TCGv_ptr cpu_env;
49 static char cpu_reg_names[3*8*3 + 5*4];
50 static TCGv cpu_dregs[8];
51 static TCGv cpu_aregs[8];
52 static TCGv_i64 cpu_fregs[8];
53 static TCGv_i64 cpu_macc[4];
55 #define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7]
56 #define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7]
57 #define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7]
58 #define MACREG(acc) cpu_macc[acc]
59 #define QREG_SP cpu_aregs[7]
61 static TCGv NULL_QREG;
62 #define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
63 /* Used to distinguish stores from bad addressing modes. */
64 static TCGv store_dummy;
66 #include "exec/gen-icount.h"
68 void m68k_tcg_init(void)
73 #define DEFO32(name, offset) QREG_##name = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUM68KState, offset), #name);
74 #define DEFO64(name, offset) QREG_##name = tcg_global_mem_new_i64(TCG_AREG0, offsetof(CPUM68KState, offset), #name);
75 #define DEFF64(name, offset) DEFO64(name, offset)
81 cpu_halted = tcg_global_mem_new_i32(TCG_AREG0,
82 -offsetof(M68kCPU, env) +
83 offsetof(CPUState, halted), "HALTED");
85 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
88 for (i = 0; i < 8; i++) {
90 cpu_dregs[i] = tcg_global_mem_new(TCG_AREG0,
91 offsetof(CPUM68KState, dregs[i]), p);
94 cpu_aregs[i] = tcg_global_mem_new(TCG_AREG0,
95 offsetof(CPUM68KState, aregs[i]), p);
98 cpu_fregs[i] = tcg_global_mem_new_i64(TCG_AREG0,
99 offsetof(CPUM68KState, fregs[i]), p);
102 for (i = 0; i < 4; i++) {
103 sprintf(p, "ACC%d", i);
104 cpu_macc[i] = tcg_global_mem_new_i64(TCG_AREG0,
105 offsetof(CPUM68KState, macc[i]), p);
109 NULL_QREG = tcg_global_mem_new(TCG_AREG0, -4, "NULL");
110 store_dummy = tcg_global_mem_new(TCG_AREG0, -8, "NULL");
116 static inline void qemu_assert(int cond, const char *msg)
119 fprintf (stderr, "badness: %s\n", msg);
124 /* internal defines */
125 typedef struct DisasContext {
127 target_ulong insn_pc; /* Start of the current instruction. */
133 struct TranslationBlock *tb;
134 int singlestep_enabled;
140 #define DISAS_JUMP_NEXT 4
142 #if defined(CONFIG_USER_ONLY)
145 #define IS_USER(s) s->user
148 /* XXX: move that elsewhere */
149 /* ??? Fix exceptions. */
150 static void *gen_throws_exception;
151 #define gen_last_qop NULL
159 typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn);
161 #ifdef DEBUG_DISPATCH
162 #define DISAS_INSN(name) \
163 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
165 static void disas_##name(CPUM68KState *env, DisasContext *s, \
168 qemu_log("Dispatch " #name "\n"); \
169 real_disas_##name(s, env, insn); \
171 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
174 #define DISAS_INSN(name) \
175 static void disas_##name(CPUM68KState *env, DisasContext *s, \
179 /* Generate a load from the specified address. Narrow values are
180 sign extended to full register width. */
181 static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign)
184 int index = IS_USER(s);
186 tmp = tcg_temp_new_i32();
190 tcg_gen_qemu_ld8s(tmp, addr, index);
192 tcg_gen_qemu_ld8u(tmp, addr, index);
196 tcg_gen_qemu_ld16s(tmp, addr, index);
198 tcg_gen_qemu_ld16u(tmp, addr, index);
202 tcg_gen_qemu_ld32u(tmp, addr, index);
205 qemu_assert(0, "bad load size");
207 gen_throws_exception = gen_last_qop;
211 static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr)
214 int index = IS_USER(s);
216 tmp = tcg_temp_new_i64();
217 tcg_gen_qemu_ldf64(tmp, addr, index);
218 gen_throws_exception = gen_last_qop;
222 /* Generate a store. */
223 static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val)
225 int index = IS_USER(s);
229 tcg_gen_qemu_st8(val, addr, index);
232 tcg_gen_qemu_st16(val, addr, index);
236 tcg_gen_qemu_st32(val, addr, index);
239 qemu_assert(0, "bad store size");
241 gen_throws_exception = gen_last_qop;
244 static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val)
246 int index = IS_USER(s);
248 tcg_gen_qemu_stf64(val, addr, index);
249 gen_throws_exception = gen_last_qop;
258 /* Generate an unsigned load if VAL is 0 a signed load if val is -1,
259 otherwise generate a store. */
260 static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val,
263 if (what == EA_STORE) {
264 gen_store(s, opsize, addr, val);
267 return gen_load(s, opsize, addr, what == EA_LOADS);
271 /* Read a 32-bit immediate constant. */
272 static inline uint32_t read_im32(CPUM68KState *env, DisasContext *s)
275 im = ((uint32_t)cpu_lduw_code(env, s->pc)) << 16;
277 im |= cpu_lduw_code(env, s->pc);
282 /* Calculate and address index. */
283 static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
288 add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12);
289 if ((ext & 0x800) == 0) {
290 tcg_gen_ext16s_i32(tmp, add);
293 scale = (ext >> 9) & 3;
295 tcg_gen_shli_i32(tmp, add, scale);
301 /* Handle a base + index + displacement effective addresss.
302 A NULL_QREG base means pc-relative. */
303 static TCGv gen_lea_indexed(CPUM68KState *env, DisasContext *s, int opsize,
313 ext = cpu_lduw_code(env, s->pc);
316 if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX))
320 /* full extension word format */
321 if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
324 if ((ext & 0x30) > 0x10) {
325 /* base displacement */
326 if ((ext & 0x30) == 0x20) {
327 bd = (int16_t)cpu_lduw_code(env, s->pc);
330 bd = read_im32(env, s);
335 tmp = tcg_temp_new();
336 if ((ext & 0x44) == 0) {
338 add = gen_addr_index(ext, tmp);
342 if ((ext & 0x80) == 0) {
343 /* base not suppressed */
344 if (IS_NULL_QREG(base)) {
345 base = tcg_const_i32(offset + bd);
348 if (!IS_NULL_QREG(add)) {
349 tcg_gen_add_i32(tmp, add, base);
355 if (!IS_NULL_QREG(add)) {
357 tcg_gen_addi_i32(tmp, add, bd);
361 add = tcg_const_i32(bd);
363 if ((ext & 3) != 0) {
364 /* memory indirect */
365 base = gen_load(s, OS_LONG, add, 0);
366 if ((ext & 0x44) == 4) {
367 add = gen_addr_index(ext, tmp);
368 tcg_gen_add_i32(tmp, add, base);
374 /* outer displacement */
375 if ((ext & 3) == 2) {
376 od = (int16_t)cpu_lduw_code(env, s->pc);
379 od = read_im32(env, s);
385 tcg_gen_addi_i32(tmp, add, od);
390 /* brief extension word format */
391 tmp = tcg_temp_new();
392 add = gen_addr_index(ext, tmp);
393 if (!IS_NULL_QREG(base)) {
394 tcg_gen_add_i32(tmp, add, base);
396 tcg_gen_addi_i32(tmp, tmp, (int8_t)ext);
398 tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext);
405 /* Update the CPU env CC_OP state. */
406 static inline void gen_flush_cc_op(DisasContext *s)
408 if (s->cc_op != CC_OP_DYNAMIC)
409 tcg_gen_movi_i32(QREG_CC_OP, s->cc_op);
412 /* Evaluate all the CC flags. */
413 static inline void gen_flush_flags(DisasContext *s)
415 if (s->cc_op == CC_OP_FLAGS)
418 gen_helper_flush_flags(cpu_env, QREG_CC_OP);
419 s->cc_op = CC_OP_FLAGS;
422 static void gen_logic_cc(DisasContext *s, TCGv val)
424 tcg_gen_mov_i32(QREG_CC_DEST, val);
425 s->cc_op = CC_OP_LOGIC;
428 static void gen_update_cc_add(TCGv dest, TCGv src)
430 tcg_gen_mov_i32(QREG_CC_DEST, dest);
431 tcg_gen_mov_i32(QREG_CC_SRC, src);
434 static inline int opsize_bytes(int opsize)
437 case OS_BYTE: return 1;
438 case OS_WORD: return 2;
439 case OS_LONG: return 4;
440 case OS_SINGLE: return 4;
441 case OS_DOUBLE: return 8;
443 qemu_assert(0, "bad operand size");
448 /* Assign value to a register. If the width is less than the register width
449 only the low part of the register is set. */
450 static void gen_partset_reg(int opsize, TCGv reg, TCGv val)
455 tcg_gen_andi_i32(reg, reg, 0xffffff00);
456 tmp = tcg_temp_new();
457 tcg_gen_ext8u_i32(tmp, val);
458 tcg_gen_or_i32(reg, reg, tmp);
461 tcg_gen_andi_i32(reg, reg, 0xffff0000);
462 tmp = tcg_temp_new();
463 tcg_gen_ext16u_i32(tmp, val);
464 tcg_gen_or_i32(reg, reg, tmp);
468 tcg_gen_mov_i32(reg, val);
471 qemu_assert(0, "Bad operand size");
476 /* Sign or zero extend a value. */
477 static inline TCGv gen_extend(TCGv val, int opsize, int sign)
483 tmp = tcg_temp_new();
485 tcg_gen_ext8s_i32(tmp, val);
487 tcg_gen_ext8u_i32(tmp, val);
490 tmp = tcg_temp_new();
492 tcg_gen_ext16s_i32(tmp, val);
494 tcg_gen_ext16u_i32(tmp, val);
501 qemu_assert(0, "Bad operand size");
506 /* Generate code for an "effective address". Does not adjust the base
507 register for autoincrement addressing modes. */
508 static TCGv gen_lea(CPUM68KState *env, DisasContext *s, uint16_t insn,
516 switch ((insn >> 3) & 7) {
517 case 0: /* Data register direct. */
518 case 1: /* Address register direct. */
520 case 2: /* Indirect register */
521 case 3: /* Indirect postincrement. */
522 return AREG(insn, 0);
523 case 4: /* Indirect predecrememnt. */
525 tmp = tcg_temp_new();
526 tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
528 case 5: /* Indirect displacement. */
530 tmp = tcg_temp_new();
531 ext = cpu_lduw_code(env, s->pc);
533 tcg_gen_addi_i32(tmp, reg, (int16_t)ext);
535 case 6: /* Indirect index + displacement. */
537 return gen_lea_indexed(env, s, opsize, reg);
540 case 0: /* Absolute short. */
541 offset = cpu_ldsw_code(env, s->pc);
543 return tcg_const_i32(offset);
544 case 1: /* Absolute long. */
545 offset = read_im32(env, s);
546 return tcg_const_i32(offset);
547 case 2: /* pc displacement */
549 offset += cpu_ldsw_code(env, s->pc);
551 return tcg_const_i32(offset);
552 case 3: /* pc index+displacement. */
553 return gen_lea_indexed(env, s, opsize, NULL_QREG);
554 case 4: /* Immediate. */
559 /* Should never happen. */
563 /* Helper function for gen_ea. Reuse the computed address between the
564 for read/write operands. */
565 static inline TCGv gen_ea_once(CPUM68KState *env, DisasContext *s,
566 uint16_t insn, int opsize, TCGv val,
567 TCGv *addrp, ea_what what)
571 if (addrp && what == EA_STORE) {
574 tmp = gen_lea(env, s, insn, opsize);
575 if (IS_NULL_QREG(tmp))
580 return gen_ldst(s, opsize, tmp, val, what);
583 /* Generate code to load/store a value from/into an EA. If VAL > 0 this is
584 a write otherwise it is a read (0 == sign extend, -1 == zero extend).
585 ADDRP is non-null for readwrite operands. */
586 static TCGv gen_ea(CPUM68KState *env, DisasContext *s, uint16_t insn,
587 int opsize, TCGv val, TCGv *addrp, ea_what what)
593 switch ((insn >> 3) & 7) {
594 case 0: /* Data register direct. */
596 if (what == EA_STORE) {
597 gen_partset_reg(opsize, reg, val);
600 return gen_extend(reg, opsize, what == EA_LOADS);
602 case 1: /* Address register direct. */
604 if (what == EA_STORE) {
605 tcg_gen_mov_i32(reg, val);
608 return gen_extend(reg, opsize, what == EA_LOADS);
610 case 2: /* Indirect register */
612 return gen_ldst(s, opsize, reg, val, what);
613 case 3: /* Indirect postincrement. */
615 result = gen_ldst(s, opsize, reg, val, what);
616 /* ??? This is not exception safe. The instruction may still
617 fault after this point. */
618 if (what == EA_STORE || !addrp)
619 tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize));
621 case 4: /* Indirect predecrememnt. */
624 if (addrp && what == EA_STORE) {
627 tmp = gen_lea(env, s, insn, opsize);
628 if (IS_NULL_QREG(tmp))
633 result = gen_ldst(s, opsize, tmp, val, what);
634 /* ??? This is not exception safe. The instruction may still
635 fault after this point. */
636 if (what == EA_STORE || !addrp) {
638 tcg_gen_mov_i32(reg, tmp);
642 case 5: /* Indirect displacement. */
643 case 6: /* Indirect index + displacement. */
644 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
647 case 0: /* Absolute short. */
648 case 1: /* Absolute long. */
649 case 2: /* pc displacement */
650 case 3: /* pc index+displacement. */
651 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
652 case 4: /* Immediate. */
653 /* Sign extend values for consistency. */
656 if (what == EA_LOADS) {
657 offset = cpu_ldsb_code(env, s->pc + 1);
659 offset = cpu_ldub_code(env, s->pc + 1);
664 if (what == EA_LOADS) {
665 offset = cpu_ldsw_code(env, s->pc);
667 offset = cpu_lduw_code(env, s->pc);
672 offset = read_im32(env, s);
675 qemu_assert(0, "Bad immediate operand");
677 return tcg_const_i32(offset);
682 /* Should never happen. */
686 /* This generates a conditional branch, clobbering all temporaries. */
687 static void gen_jmpcc(DisasContext *s, int cond, int l1)
691 /* TODO: Optimize compare/branch pairs rather than always flushing
692 flag state to CC_OP_FLAGS. */
700 case 2: /* HI (!C && !Z) */
701 tmp = tcg_temp_new();
702 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
703 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
705 case 3: /* LS (C || Z) */
706 tmp = tcg_temp_new();
707 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
708 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
710 case 4: /* CC (!C) */
711 tmp = tcg_temp_new();
712 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
713 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
716 tmp = tcg_temp_new();
717 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
718 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
720 case 6: /* NE (!Z) */
721 tmp = tcg_temp_new();
722 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
723 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
726 tmp = tcg_temp_new();
727 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
728 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
730 case 8: /* VC (!V) */
731 tmp = tcg_temp_new();
732 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
733 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
736 tmp = tcg_temp_new();
737 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
738 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
740 case 10: /* PL (!N) */
741 tmp = tcg_temp_new();
742 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
743 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
745 case 11: /* MI (N) */
746 tmp = tcg_temp_new();
747 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
748 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
750 case 12: /* GE (!(N ^ V)) */
751 tmp = tcg_temp_new();
752 assert(CCF_V == (CCF_N >> 2));
753 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
754 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
755 tcg_gen_andi_i32(tmp, tmp, CCF_V);
756 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
758 case 13: /* LT (N ^ V) */
759 tmp = tcg_temp_new();
760 assert(CCF_V == (CCF_N >> 2));
761 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
762 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
763 tcg_gen_andi_i32(tmp, tmp, CCF_V);
764 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
766 case 14: /* GT (!(Z || (N ^ V))) */
767 tmp = tcg_temp_new();
768 assert(CCF_V == (CCF_N >> 2));
769 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
770 tcg_gen_shri_i32(tmp, tmp, 2);
771 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
772 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
773 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
775 case 15: /* LE (Z || (N ^ V)) */
776 tmp = tcg_temp_new();
777 assert(CCF_V == (CCF_N >> 2));
778 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
779 tcg_gen_shri_i32(tmp, tmp, 2);
780 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
781 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
782 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
785 /* Should ever happen. */
796 l1 = gen_new_label();
797 cond = (insn >> 8) & 0xf;
799 tcg_gen_andi_i32(reg, reg, 0xffffff00);
800 /* This is safe because we modify the reg directly, with no other values
802 gen_jmpcc(s, cond ^ 1, l1);
803 tcg_gen_ori_i32(reg, reg, 0xff);
807 /* Force a TB lookup after an instruction that changes the CPU state. */
808 static void gen_lookup_tb(DisasContext *s)
811 tcg_gen_movi_i32(QREG_PC, s->pc);
812 s->is_jmp = DISAS_UPDATE;
815 /* Generate a jump to an immediate address. */
816 static void gen_jmp_im(DisasContext *s, uint32_t dest)
819 tcg_gen_movi_i32(QREG_PC, dest);
820 s->is_jmp = DISAS_JUMP;
823 /* Generate a jump to the address in qreg DEST. */
824 static void gen_jmp(DisasContext *s, TCGv dest)
827 tcg_gen_mov_i32(QREG_PC, dest);
828 s->is_jmp = DISAS_JUMP;
831 static void gen_exception(DisasContext *s, uint32_t where, int nr)
834 gen_jmp_im(s, where);
835 gen_helper_raise_exception(cpu_env, tcg_const_i32(nr));
838 static inline void gen_addr_fault(DisasContext *s)
840 gen_exception(s, s->insn_pc, EXCP_ADDRESS);
843 #define SRC_EA(env, result, opsize, op_sign, addrp) do { \
844 result = gen_ea(env, s, insn, opsize, NULL_QREG, addrp, \
845 op_sign ? EA_LOADS : EA_LOADU); \
846 if (IS_NULL_QREG(result)) { \
852 #define DEST_EA(env, insn, opsize, val, addrp) do { \
853 TCGv ea_result = gen_ea(env, s, insn, opsize, val, addrp, EA_STORE); \
854 if (IS_NULL_QREG(ea_result)) { \
860 /* Generate a jump to an immediate address. */
861 static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest)
863 TranslationBlock *tb;
866 if (unlikely(s->singlestep_enabled)) {
867 gen_exception(s, dest, EXCP_DEBUG);
868 } else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) ||
869 (s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
871 tcg_gen_movi_i32(QREG_PC, dest);
872 tcg_gen_exit_tb((tcg_target_long)tb + n);
877 s->is_jmp = DISAS_TB_JUMP;
880 DISAS_INSN(undef_mac)
882 gen_exception(s, s->pc - 2, EXCP_LINEA);
885 DISAS_INSN(undef_fpu)
887 gen_exception(s, s->pc - 2, EXCP_LINEF);
892 gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
893 cpu_abort(env, "Illegal instruction: %04x @ %08x", insn, s->pc - 2);
903 sign = (insn & 0x100) != 0;
905 tmp = tcg_temp_new();
907 tcg_gen_ext16s_i32(tmp, reg);
909 tcg_gen_ext16u_i32(tmp, reg);
910 SRC_EA(env, src, OS_WORD, sign, NULL);
911 tcg_gen_mul_i32(tmp, tmp, src);
912 tcg_gen_mov_i32(reg, tmp);
913 /* Unlike m68k, coldfire always clears the overflow bit. */
914 gen_logic_cc(s, tmp);
924 sign = (insn & 0x100) != 0;
927 tcg_gen_ext16s_i32(QREG_DIV1, reg);
929 tcg_gen_ext16u_i32(QREG_DIV1, reg);
931 SRC_EA(env, src, OS_WORD, sign, NULL);
932 tcg_gen_mov_i32(QREG_DIV2, src);
934 gen_helper_divs(cpu_env, tcg_const_i32(1));
936 gen_helper_divu(cpu_env, tcg_const_i32(1));
939 tmp = tcg_temp_new();
940 src = tcg_temp_new();
941 tcg_gen_ext16u_i32(tmp, QREG_DIV1);
942 tcg_gen_shli_i32(src, QREG_DIV2, 16);
943 tcg_gen_or_i32(reg, tmp, src);
944 s->cc_op = CC_OP_FLAGS;
954 ext = cpu_lduw_code(env, s->pc);
957 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
962 tcg_gen_mov_i32(QREG_DIV1, num);
963 SRC_EA(env, den, OS_LONG, 0, NULL);
964 tcg_gen_mov_i32(QREG_DIV2, den);
966 gen_helper_divs(cpu_env, tcg_const_i32(0));
968 gen_helper_divu(cpu_env, tcg_const_i32(0));
970 if ((ext & 7) == ((ext >> 12) & 7)) {
972 tcg_gen_mov_i32 (reg, QREG_DIV1);
975 tcg_gen_mov_i32 (reg, QREG_DIV2);
977 s->cc_op = CC_OP_FLAGS;
989 add = (insn & 0x4000) != 0;
991 dest = tcg_temp_new();
993 SRC_EA(env, tmp, OS_LONG, 0, &addr);
997 SRC_EA(env, src, OS_LONG, 0, NULL);
1000 tcg_gen_add_i32(dest, tmp, src);
1001 gen_helper_xflag_lt(QREG_CC_X, dest, src);
1002 s->cc_op = CC_OP_ADD;
1004 gen_helper_xflag_lt(QREG_CC_X, tmp, src);
1005 tcg_gen_sub_i32(dest, tmp, src);
1006 s->cc_op = CC_OP_SUB;
1008 gen_update_cc_add(dest, src);
1010 DEST_EA(env, insn, OS_LONG, dest, &addr);
1012 tcg_gen_mov_i32(reg, dest);
1017 /* Reverse the order of the bits in REG. */
1021 reg = DREG(insn, 0);
1022 gen_helper_bitrev(reg, reg);
1025 DISAS_INSN(bitop_reg)
1035 if ((insn & 0x38) != 0)
1039 op = (insn >> 6) & 3;
1040 SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
1041 src2 = DREG(insn, 9);
1042 dest = tcg_temp_new();
1045 tmp = tcg_temp_new();
1046 if (opsize == OS_BYTE)
1047 tcg_gen_andi_i32(tmp, src2, 7);
1049 tcg_gen_andi_i32(tmp, src2, 31);
1051 tmp = tcg_temp_new();
1052 tcg_gen_shr_i32(tmp, src1, src2);
1053 tcg_gen_andi_i32(tmp, tmp, 1);
1054 tcg_gen_shli_i32(tmp, tmp, 2);
1055 /* Clear CCF_Z if bit set. */
1056 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1057 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1059 tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
1062 tcg_gen_xor_i32(dest, src1, tmp);
1065 tcg_gen_not_i32(tmp, tmp);
1066 tcg_gen_and_i32(dest, src1, tmp);
1069 tcg_gen_or_i32(dest, src1, tmp);
1075 DEST_EA(env, insn, opsize, dest, &addr);
1081 reg = DREG(insn, 0);
1083 gen_helper_sats(reg, reg, QREG_CC_DEST);
1084 gen_logic_cc(s, reg);
1087 static void gen_push(DisasContext *s, TCGv val)
1091 tmp = tcg_temp_new();
1092 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1093 gen_store(s, OS_LONG, tmp, val);
1094 tcg_gen_mov_i32(QREG_SP, tmp);
1106 mask = cpu_lduw_code(env, s->pc);
1108 tmp = gen_lea(env, s, insn, OS_LONG);
1109 if (IS_NULL_QREG(tmp)) {
1113 addr = tcg_temp_new();
1114 tcg_gen_mov_i32(addr, tmp);
1115 is_load = ((insn & 0x0400) != 0);
1116 for (i = 0; i < 16; i++, mask >>= 1) {
1123 tmp = gen_load(s, OS_LONG, addr, 0);
1124 tcg_gen_mov_i32(reg, tmp);
1126 gen_store(s, OS_LONG, addr, reg);
1129 tcg_gen_addi_i32(addr, addr, 4);
1134 DISAS_INSN(bitop_im)
1144 if ((insn & 0x38) != 0)
1148 op = (insn >> 6) & 3;
1150 bitnum = cpu_lduw_code(env, s->pc);
1152 if (bitnum & 0xff00) {
1153 disas_undef(env, s, insn);
1157 SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
1160 if (opsize == OS_BYTE)
1166 tmp = tcg_temp_new();
1167 assert (CCF_Z == (1 << 2));
1169 tcg_gen_shri_i32(tmp, src1, bitnum - 2);
1170 else if (bitnum < 2)
1171 tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
1173 tcg_gen_mov_i32(tmp, src1);
1174 tcg_gen_andi_i32(tmp, tmp, CCF_Z);
1175 /* Clear CCF_Z if bit set. */
1176 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1177 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1181 tcg_gen_xori_i32(tmp, src1, mask);
1184 tcg_gen_andi_i32(tmp, src1, ~mask);
1187 tcg_gen_ori_i32(tmp, src1, mask);
1192 DEST_EA(env, insn, opsize, tmp, &addr);
1196 DISAS_INSN(arith_im)
1204 op = (insn >> 9) & 7;
1205 SRC_EA(env, src1, OS_LONG, 0, (op == 6) ? NULL : &addr);
1206 im = read_im32(env, s);
1207 dest = tcg_temp_new();
1210 tcg_gen_ori_i32(dest, src1, im);
1211 gen_logic_cc(s, dest);
1214 tcg_gen_andi_i32(dest, src1, im);
1215 gen_logic_cc(s, dest);
1218 tcg_gen_mov_i32(dest, src1);
1219 gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
1220 tcg_gen_subi_i32(dest, dest, im);
1221 gen_update_cc_add(dest, tcg_const_i32(im));
1222 s->cc_op = CC_OP_SUB;
1225 tcg_gen_mov_i32(dest, src1);
1226 tcg_gen_addi_i32(dest, dest, im);
1227 gen_update_cc_add(dest, tcg_const_i32(im));
1228 gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
1229 s->cc_op = CC_OP_ADD;
1232 tcg_gen_xori_i32(dest, src1, im);
1233 gen_logic_cc(s, dest);
1236 tcg_gen_mov_i32(dest, src1);
1237 tcg_gen_subi_i32(dest, dest, im);
1238 gen_update_cc_add(dest, tcg_const_i32(im));
1239 s->cc_op = CC_OP_SUB;
1245 DEST_EA(env, insn, OS_LONG, dest, &addr);
1253 reg = DREG(insn, 0);
1254 tcg_gen_bswap32_i32(reg, reg);
1264 switch (insn >> 12) {
1265 case 1: /* move.b */
1268 case 2: /* move.l */
1271 case 3: /* move.w */
1277 SRC_EA(env, src, opsize, 1, NULL);
1278 op = (insn >> 6) & 7;
1281 /* The value will already have been sign extended. */
1282 dest = AREG(insn, 9);
1283 tcg_gen_mov_i32(dest, src);
1287 dest_ea = ((insn >> 9) & 7) | (op << 3);
1288 DEST_EA(env, dest_ea, opsize, src, NULL);
1289 /* This will be correct because loads sign extend. */
1290 gen_logic_cc(s, src);
1299 reg = DREG(insn, 0);
1300 gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
1308 reg = AREG(insn, 9);
1309 tmp = gen_lea(env, s, insn, OS_LONG);
1310 if (IS_NULL_QREG(tmp)) {
1314 tcg_gen_mov_i32(reg, tmp);
1321 switch ((insn >> 6) & 3) {
1334 DEST_EA(env, insn, opsize, tcg_const_i32(0), NULL);
1335 gen_logic_cc(s, tcg_const_i32(0));
1338 static TCGv gen_get_ccr(DisasContext *s)
1343 dest = tcg_temp_new();
1344 tcg_gen_shli_i32(dest, QREG_CC_X, 4);
1345 tcg_gen_or_i32(dest, dest, QREG_CC_DEST);
1349 DISAS_INSN(move_from_ccr)
1354 ccr = gen_get_ccr(s);
1355 reg = DREG(insn, 0);
1356 gen_partset_reg(OS_WORD, reg, ccr);
1364 reg = DREG(insn, 0);
1365 src1 = tcg_temp_new();
1366 tcg_gen_mov_i32(src1, reg);
1367 tcg_gen_neg_i32(reg, src1);
1368 s->cc_op = CC_OP_SUB;
1369 gen_update_cc_add(reg, src1);
1370 gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
1371 s->cc_op = CC_OP_SUB;
1374 static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only)
1376 tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
1377 tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4);
1379 gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
1383 static void gen_set_sr(CPUM68KState *env, DisasContext *s, uint16_t insn,
1389 s->cc_op = CC_OP_FLAGS;
1390 if ((insn & 0x38) == 0)
1392 tmp = tcg_temp_new();
1393 reg = DREG(insn, 0);
1394 tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
1395 tcg_gen_shri_i32(tmp, reg, 4);
1396 tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
1398 gen_helper_set_sr(cpu_env, reg);
1401 else if ((insn & 0x3f) == 0x3c)
1404 val = cpu_lduw_code(env, s->pc);
1406 gen_set_sr_im(s, val, ccr_only);
1409 disas_undef(env, s, insn);
1412 DISAS_INSN(move_to_ccr)
1414 gen_set_sr(env, s, insn, 1);
1421 reg = DREG(insn, 0);
1422 tcg_gen_not_i32(reg, reg);
1423 gen_logic_cc(s, reg);
1432 src1 = tcg_temp_new();
1433 src2 = tcg_temp_new();
1434 reg = DREG(insn, 0);
1435 tcg_gen_shli_i32(src1, reg, 16);
1436 tcg_gen_shri_i32(src2, reg, 16);
1437 tcg_gen_or_i32(reg, src1, src2);
1438 gen_logic_cc(s, reg);
1445 tmp = gen_lea(env, s, insn, OS_LONG);
1446 if (IS_NULL_QREG(tmp)) {
1459 reg = DREG(insn, 0);
1460 op = (insn >> 6) & 7;
1461 tmp = tcg_temp_new();
1463 tcg_gen_ext16s_i32(tmp, reg);
1465 tcg_gen_ext8s_i32(tmp, reg);
1467 gen_partset_reg(OS_WORD, reg, tmp);
1469 tcg_gen_mov_i32(reg, tmp);
1470 gen_logic_cc(s, tmp);
1478 switch ((insn >> 6) & 3) {
1491 SRC_EA(env, tmp, opsize, 1, NULL);
1492 gen_logic_cc(s, tmp);
1497 /* Implemented as a NOP. */
1502 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
1505 /* ??? This should be atomic. */
1512 dest = tcg_temp_new();
1513 SRC_EA(env, src1, OS_BYTE, 1, &addr);
1514 gen_logic_cc(s, src1);
1515 tcg_gen_ori_i32(dest, src1, 0x80);
1516 DEST_EA(env, insn, OS_BYTE, dest, &addr);
1526 /* The upper 32 bits of the product are discarded, so
1527 muls.l and mulu.l are functionally equivalent. */
1528 ext = cpu_lduw_code(env, s->pc);
1531 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
1534 reg = DREG(ext, 12);
1535 SRC_EA(env, src1, OS_LONG, 0, NULL);
1536 dest = tcg_temp_new();
1537 tcg_gen_mul_i32(dest, src1, reg);
1538 tcg_gen_mov_i32(reg, dest);
1539 /* Unlike m68k, coldfire always clears the overflow bit. */
1540 gen_logic_cc(s, dest);
1549 offset = cpu_ldsw_code(env, s->pc);
1551 reg = AREG(insn, 0);
1552 tmp = tcg_temp_new();
1553 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1554 gen_store(s, OS_LONG, tmp, reg);
1555 if ((insn & 7) != 7)
1556 tcg_gen_mov_i32(reg, tmp);
1557 tcg_gen_addi_i32(QREG_SP, tmp, offset);
1566 src = tcg_temp_new();
1567 reg = AREG(insn, 0);
1568 tcg_gen_mov_i32(src, reg);
1569 tmp = gen_load(s, OS_LONG, src, 0);
1570 tcg_gen_mov_i32(reg, tmp);
1571 tcg_gen_addi_i32(QREG_SP, src, 4);
1582 tmp = gen_load(s, OS_LONG, QREG_SP, 0);
1583 tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
1591 /* Load the target address first to ensure correct exception
1593 tmp = gen_lea(env, s, insn, OS_LONG);
1594 if (IS_NULL_QREG(tmp)) {
1598 if ((insn & 0x40) == 0) {
1600 gen_push(s, tcg_const_i32(s->pc));
1613 SRC_EA(env, src1, OS_LONG, 0, &addr);
1614 val = (insn >> 9) & 7;
1617 dest = tcg_temp_new();
1618 tcg_gen_mov_i32(dest, src1);
1619 if ((insn & 0x38) == 0x08) {
1620 /* Don't update condition codes if the destination is an
1621 address register. */
1622 if (insn & 0x0100) {
1623 tcg_gen_subi_i32(dest, dest, val);
1625 tcg_gen_addi_i32(dest, dest, val);
1628 src2 = tcg_const_i32(val);
1629 if (insn & 0x0100) {
1630 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1631 tcg_gen_subi_i32(dest, dest, val);
1632 s->cc_op = CC_OP_SUB;
1634 tcg_gen_addi_i32(dest, dest, val);
1635 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1636 s->cc_op = CC_OP_ADD;
1638 gen_update_cc_add(dest, src2);
1640 DEST_EA(env, insn, OS_LONG, dest, &addr);
1646 case 2: /* One extension word. */
1649 case 3: /* Two extension words. */
1652 case 4: /* No extension words. */
1655 disas_undef(env, s, insn);
1667 op = (insn >> 8) & 0xf;
1668 offset = (int8_t)insn;
1670 offset = cpu_ldsw_code(env, s->pc);
1672 } else if (offset == -1) {
1673 offset = read_im32(env, s);
1677 gen_push(s, tcg_const_i32(s->pc));
1682 l1 = gen_new_label();
1683 gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1);
1684 gen_jmp_tb(s, 1, base + offset);
1686 gen_jmp_tb(s, 0, s->pc);
1688 /* Unconditional branch. */
1689 gen_jmp_tb(s, 0, base + offset);
1698 tcg_gen_movi_i32(DREG(insn, 9), val);
1699 gen_logic_cc(s, tcg_const_i32(val));
1712 SRC_EA(env, src, opsize, (insn & 0x80) == 0, NULL);
1713 reg = DREG(insn, 9);
1714 tcg_gen_mov_i32(reg, src);
1715 gen_logic_cc(s, src);
1725 reg = DREG(insn, 9);
1726 dest = tcg_temp_new();
1728 SRC_EA(env, src, OS_LONG, 0, &addr);
1729 tcg_gen_or_i32(dest, src, reg);
1730 DEST_EA(env, insn, OS_LONG, dest, &addr);
1732 SRC_EA(env, src, OS_LONG, 0, NULL);
1733 tcg_gen_or_i32(dest, src, reg);
1734 tcg_gen_mov_i32(reg, dest);
1736 gen_logic_cc(s, dest);
1744 SRC_EA(env, src, OS_LONG, 0, NULL);
1745 reg = AREG(insn, 9);
1746 tcg_gen_sub_i32(reg, reg, src);
1755 reg = DREG(insn, 9);
1756 src = DREG(insn, 0);
1757 gen_helper_subx_cc(reg, cpu_env, reg, src);
1765 val = (insn >> 9) & 7;
1768 src = tcg_const_i32(val);
1769 gen_logic_cc(s, src);
1770 DEST_EA(env, insn, OS_LONG, src, NULL);
1781 op = (insn >> 6) & 3;
1785 s->cc_op = CC_OP_CMPB;
1789 s->cc_op = CC_OP_CMPW;
1793 s->cc_op = CC_OP_SUB;
1798 SRC_EA(env, src, opsize, 1, NULL);
1799 reg = DREG(insn, 9);
1800 dest = tcg_temp_new();
1801 tcg_gen_sub_i32(dest, reg, src);
1802 gen_update_cc_add(dest, src);
1817 SRC_EA(env, src, opsize, 1, NULL);
1818 reg = AREG(insn, 9);
1819 dest = tcg_temp_new();
1820 tcg_gen_sub_i32(dest, reg, src);
1821 gen_update_cc_add(dest, src);
1822 s->cc_op = CC_OP_SUB;
1832 SRC_EA(env, src, OS_LONG, 0, &addr);
1833 reg = DREG(insn, 9);
1834 dest = tcg_temp_new();
1835 tcg_gen_xor_i32(dest, src, reg);
1836 gen_logic_cc(s, dest);
1837 DEST_EA(env, insn, OS_LONG, dest, &addr);
1847 reg = DREG(insn, 9);
1848 dest = tcg_temp_new();
1850 SRC_EA(env, src, OS_LONG, 0, &addr);
1851 tcg_gen_and_i32(dest, src, reg);
1852 DEST_EA(env, insn, OS_LONG, dest, &addr);
1854 SRC_EA(env, src, OS_LONG, 0, NULL);
1855 tcg_gen_and_i32(dest, src, reg);
1856 tcg_gen_mov_i32(reg, dest);
1858 gen_logic_cc(s, dest);
1866 SRC_EA(env, src, OS_LONG, 0, NULL);
1867 reg = AREG(insn, 9);
1868 tcg_gen_add_i32(reg, reg, src);
1877 reg = DREG(insn, 9);
1878 src = DREG(insn, 0);
1879 gen_helper_addx_cc(reg, cpu_env, reg, src);
1880 s->cc_op = CC_OP_FLAGS;
1883 /* TODO: This could be implemented without helper functions. */
1884 DISAS_INSN(shift_im)
1890 reg = DREG(insn, 0);
1891 tmp = (insn >> 9) & 7;
1894 shift = tcg_const_i32(tmp);
1895 /* No need to flush flags becuse we know we will set C flag. */
1897 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1900 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1902 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1905 s->cc_op = CC_OP_SHIFT;
1908 DISAS_INSN(shift_reg)
1913 reg = DREG(insn, 0);
1914 shift = DREG(insn, 9);
1915 /* Shift by zero leaves C flag unmodified. */
1918 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1921 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1923 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1926 s->cc_op = CC_OP_SHIFT;
1932 reg = DREG(insn, 0);
1933 gen_logic_cc(s, reg);
1934 gen_helper_ff1(reg, reg);
1937 static TCGv gen_get_sr(DisasContext *s)
1942 ccr = gen_get_ccr(s);
1943 sr = tcg_temp_new();
1944 tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
1945 tcg_gen_or_i32(sr, sr, ccr);
1955 ext = cpu_lduw_code(env, s->pc);
1957 if (ext != 0x46FC) {
1958 gen_exception(s, addr, EXCP_UNSUPPORTED);
1961 ext = cpu_lduw_code(env, s->pc);
1963 if (IS_USER(s) || (ext & SR_S) == 0) {
1964 gen_exception(s, addr, EXCP_PRIVILEGE);
1967 gen_push(s, gen_get_sr(s));
1968 gen_set_sr_im(s, ext, 0);
1971 DISAS_INSN(move_from_sr)
1977 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1981 reg = DREG(insn, 0);
1982 gen_partset_reg(OS_WORD, reg, sr);
1985 DISAS_INSN(move_to_sr)
1988 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1991 gen_set_sr(env, s, insn, 0);
1995 DISAS_INSN(move_from_usp)
1998 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2001 /* TODO: Implement USP. */
2002 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
2005 DISAS_INSN(move_to_usp)
2008 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2011 /* TODO: Implement USP. */
2012 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
2017 gen_exception(s, s->pc, EXCP_HALT_INSN);
2025 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2029 ext = cpu_lduw_code(env, s->pc);
2032 gen_set_sr_im(s, ext, 0);
2033 tcg_gen_movi_i32(cpu_halted, 1);
2034 gen_exception(s, s->pc, EXCP_HLT);
2040 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2043 gen_exception(s, s->pc - 2, EXCP_RTE);
2052 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2056 ext = cpu_lduw_code(env, s->pc);
2060 reg = AREG(ext, 12);
2062 reg = DREG(ext, 12);
2064 gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
2071 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2074 /* ICache fetch. Implement as no-op. */
2080 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2083 /* Cache push/invalidate. Implement as no-op. */
2088 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2094 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2097 /* TODO: Implement wdebug. */
2098 qemu_assert(0, "WDEBUG not implemented");
2103 gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf));
2106 /* ??? FP exceptions are not implemented. Most exceptions are deferred until
2107 immediately before the next FP instruction is executed. */
2121 ext = cpu_lduw_code(env, s->pc);
2123 opmode = ext & 0x7f;
2124 switch ((ext >> 13) & 7) {
2129 case 3: /* fmove out */
2131 tmp32 = tcg_temp_new_i32();
2133 /* ??? TODO: Proper behavior on overflow. */
2134 switch ((ext >> 10) & 7) {
2137 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2141 gen_helper_f64_to_f32(tmp32, cpu_env, src);
2145 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2147 case 5: /* OS_DOUBLE */
2148 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2149 switch ((insn >> 3) & 7) {
2154 tcg_gen_addi_i32(tmp32, tmp32, -8);
2157 offset = cpu_ldsw_code(env, s->pc);
2159 tcg_gen_addi_i32(tmp32, tmp32, offset);
2164 gen_store64(s, tmp32, src);
2165 switch ((insn >> 3) & 7) {
2167 tcg_gen_addi_i32(tmp32, tmp32, 8);
2168 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2171 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2174 tcg_temp_free_i32(tmp32);
2178 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2183 DEST_EA(env, insn, opsize, tmp32, NULL);
2184 tcg_temp_free_i32(tmp32);
2186 case 4: /* fmove to control register. */
2187 switch ((ext >> 10) & 7) {
2189 /* Not implemented. Ignore writes. */
2194 cpu_abort(NULL, "Unimplemented: fmove to control %d",
2198 case 5: /* fmove from control register. */
2199 switch ((ext >> 10) & 7) {
2201 /* Not implemented. Always return zero. */
2202 tmp32 = tcg_const_i32(0);
2207 cpu_abort(NULL, "Unimplemented: fmove from control %d",
2211 DEST_EA(env, insn, OS_LONG, tmp32, NULL);
2213 case 6: /* fmovem */
2219 if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0)
2221 tmp32 = gen_lea(env, s, insn, OS_LONG);
2222 if (IS_NULL_QREG(tmp32)) {
2226 addr = tcg_temp_new_i32();
2227 tcg_gen_mov_i32(addr, tmp32);
2229 for (i = 0; i < 8; i++) {
2233 if (ext & (1 << 13)) {
2235 tcg_gen_qemu_stf64(dest, addr, IS_USER(s));
2238 tcg_gen_qemu_ldf64(dest, addr, IS_USER(s));
2240 if (ext & (mask - 1))
2241 tcg_gen_addi_i32(addr, addr, 8);
2245 tcg_temp_free_i32(addr);
2249 if (ext & (1 << 14)) {
2250 /* Source effective address. */
2251 switch ((ext >> 10) & 7) {
2252 case 0: opsize = OS_LONG; break;
2253 case 1: opsize = OS_SINGLE; break;
2254 case 4: opsize = OS_WORD; break;
2255 case 5: opsize = OS_DOUBLE; break;
2256 case 6: opsize = OS_BYTE; break;
2260 if (opsize == OS_DOUBLE) {
2261 tmp32 = tcg_temp_new_i32();
2262 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2263 switch ((insn >> 3) & 7) {
2268 tcg_gen_addi_i32(tmp32, tmp32, -8);
2271 offset = cpu_ldsw_code(env, s->pc);
2273 tcg_gen_addi_i32(tmp32, tmp32, offset);
2276 offset = cpu_ldsw_code(env, s->pc);
2277 offset += s->pc - 2;
2279 tcg_gen_addi_i32(tmp32, tmp32, offset);
2284 src = gen_load64(s, tmp32);
2285 switch ((insn >> 3) & 7) {
2287 tcg_gen_addi_i32(tmp32, tmp32, 8);
2288 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2291 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2294 tcg_temp_free_i32(tmp32);
2296 SRC_EA(env, tmp32, opsize, 1, NULL);
2297 src = tcg_temp_new_i64();
2302 gen_helper_i32_to_f64(src, cpu_env, tmp32);
2305 gen_helper_f32_to_f64(src, cpu_env, tmp32);
2310 /* Source register. */
2311 src = FREG(ext, 10);
2313 dest = FREG(ext, 7);
2314 res = tcg_temp_new_i64();
2316 tcg_gen_mov_f64(res, dest);
2320 case 0: case 0x40: case 0x44: /* fmove */
2321 tcg_gen_mov_f64(res, src);
2324 gen_helper_iround_f64(res, cpu_env, src);
2327 case 3: /* fintrz */
2328 gen_helper_itrunc_f64(res, cpu_env, src);
2331 case 4: case 0x41: case 0x45: /* fsqrt */
2332 gen_helper_sqrt_f64(res, cpu_env, src);
2334 case 0x18: case 0x58: case 0x5c: /* fabs */
2335 gen_helper_abs_f64(res, src);
2337 case 0x1a: case 0x5a: case 0x5e: /* fneg */
2338 gen_helper_chs_f64(res, src);
2340 case 0x20: case 0x60: case 0x64: /* fdiv */
2341 gen_helper_div_f64(res, cpu_env, res, src);
2343 case 0x22: case 0x62: case 0x66: /* fadd */
2344 gen_helper_add_f64(res, cpu_env, res, src);
2346 case 0x23: case 0x63: case 0x67: /* fmul */
2347 gen_helper_mul_f64(res, cpu_env, res, src);
2349 case 0x28: case 0x68: case 0x6c: /* fsub */
2350 gen_helper_sub_f64(res, cpu_env, res, src);
2352 case 0x38: /* fcmp */
2353 gen_helper_sub_cmp_f64(res, cpu_env, res, src);
2357 case 0x3a: /* ftst */
2358 tcg_gen_mov_f64(res, src);
2365 if (ext & (1 << 14)) {
2366 tcg_temp_free_i64(src);
2369 if (opmode & 0x40) {
2370 if ((opmode & 0x4) != 0)
2372 } else if ((s->fpcr & M68K_FPCR_PREC) == 0) {
2377 TCGv tmp = tcg_temp_new_i32();
2378 gen_helper_f64_to_f32(tmp, cpu_env, res);
2379 gen_helper_f32_to_f64(res, cpu_env, tmp);
2380 tcg_temp_free_i32(tmp);
2382 tcg_gen_mov_f64(QREG_FP_RESULT, res);
2384 tcg_gen_mov_f64(dest, res);
2386 tcg_temp_free_i64(res);
2389 /* FIXME: Is this right for offset addressing modes? */
2391 disas_undef_fpu(env, s, insn);
2402 offset = cpu_ldsw_code(env, s->pc);
2404 if (insn & (1 << 6)) {
2405 offset = (offset << 16) | cpu_lduw_code(env, s->pc);
2409 l1 = gen_new_label();
2410 /* TODO: Raise BSUN exception. */
2411 flag = tcg_temp_new();
2412 gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT);
2413 /* Jump to l1 if condition is true. */
2414 switch (insn & 0xf) {
2417 case 1: /* eq (=0) */
2418 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2420 case 2: /* ogt (=1) */
2421 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
2423 case 3: /* oge (=0 or =1) */
2424 tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
2426 case 4: /* olt (=-1) */
2427 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
2429 case 5: /* ole (=-1 or =0) */
2430 tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
2432 case 6: /* ogl (=-1 or =1) */
2433 tcg_gen_andi_i32(flag, flag, 1);
2434 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2436 case 7: /* or (=2) */
2437 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
2439 case 8: /* un (<2) */
2440 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
2442 case 9: /* ueq (=0 or =2) */
2443 tcg_gen_andi_i32(flag, flag, 1);
2444 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2446 case 10: /* ugt (>0) */
2447 tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
2449 case 11: /* uge (>=0) */
2450 tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
2452 case 12: /* ult (=-1 or =2) */
2453 tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
2455 case 13: /* ule (!=1) */
2456 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
2458 case 14: /* ne (!=0) */
2459 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2465 gen_jmp_tb(s, 0, s->pc);
2467 gen_jmp_tb(s, 1, addr + offset);
2470 DISAS_INSN(frestore)
2472 /* TODO: Implement frestore. */
2473 qemu_assert(0, "FRESTORE not implemented");
2478 /* TODO: Implement fsave. */
2479 qemu_assert(0, "FSAVE not implemented");
2482 static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper)
2484 TCGv tmp = tcg_temp_new();
2485 if (s->env->macsr & MACSR_FI) {
2487 tcg_gen_andi_i32(tmp, val, 0xffff0000);
2489 tcg_gen_shli_i32(tmp, val, 16);
2490 } else if (s->env->macsr & MACSR_SU) {
2492 tcg_gen_sari_i32(tmp, val, 16);
2494 tcg_gen_ext16s_i32(tmp, val);
2497 tcg_gen_shri_i32(tmp, val, 16);
2499 tcg_gen_ext16u_i32(tmp, val);
2504 static void gen_mac_clear_flags(void)
2506 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR,
2507 ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV));
2523 s->mactmp = tcg_temp_new_i64();
2527 ext = cpu_lduw_code(env, s->pc);
2530 acc = ((insn >> 7) & 1) | ((ext >> 3) & 2);
2531 dual = ((insn & 0x30) != 0 && (ext & 3) != 0);
2532 if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
2533 disas_undef(env, s, insn);
2537 /* MAC with load. */
2538 tmp = gen_lea(env, s, insn, OS_LONG);
2539 addr = tcg_temp_new();
2540 tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK);
2541 /* Load the value now to ensure correct exception behavior.
2542 Perform writeback after reading the MAC inputs. */
2543 loadval = gen_load(s, OS_LONG, addr, 0);
2546 rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12);
2547 ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0);
2549 loadval = addr = NULL_QREG;
2550 rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2551 ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2554 gen_mac_clear_flags();
2557 /* Disabled because conditional branches clobber temporary vars. */
2558 if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
2559 /* Skip the multiply if we know we will ignore it. */
2560 l1 = gen_new_label();
2561 tmp = tcg_temp_new();
2562 tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
2563 gen_op_jmp_nz32(tmp, l1);
2567 if ((ext & 0x0800) == 0) {
2569 rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0);
2570 ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0);
2572 if (s->env->macsr & MACSR_FI) {
2573 gen_helper_macmulf(s->mactmp, cpu_env, rx, ry);
2575 if (s->env->macsr & MACSR_SU)
2576 gen_helper_macmuls(s->mactmp, cpu_env, rx, ry);
2578 gen_helper_macmulu(s->mactmp, cpu_env, rx, ry);
2579 switch ((ext >> 9) & 3) {
2581 tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
2584 tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
2590 /* Save the overflow flag from the multiply. */
2591 saved_flags = tcg_temp_new();
2592 tcg_gen_mov_i32(saved_flags, QREG_MACSR);
2594 saved_flags = NULL_QREG;
2598 /* Disabled because conditional branches clobber temporary vars. */
2599 if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
2600 /* Skip the accumulate if the value is already saturated. */
2601 l1 = gen_new_label();
2602 tmp = tcg_temp_new();
2603 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2604 gen_op_jmp_nz32(tmp, l1);
2609 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2611 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2613 if (s->env->macsr & MACSR_FI)
2614 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2615 else if (s->env->macsr & MACSR_SU)
2616 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2618 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2621 /* Disabled because conditional branches clobber temporary vars. */
2627 /* Dual accumulate variant. */
2628 acc = (ext >> 2) & 3;
2629 /* Restore the overflow flag from the multiplier. */
2630 tcg_gen_mov_i32(QREG_MACSR, saved_flags);
2632 /* Disabled because conditional branches clobber temporary vars. */
2633 if ((s->env->macsr & MACSR_OMC) != 0) {
2634 /* Skip the accumulate if the value is already saturated. */
2635 l1 = gen_new_label();
2636 tmp = tcg_temp_new();
2637 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2638 gen_op_jmp_nz32(tmp, l1);
2642 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2644 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2645 if (s->env->macsr & MACSR_FI)
2646 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2647 else if (s->env->macsr & MACSR_SU)
2648 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2650 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2652 /* Disabled because conditional branches clobber temporary vars. */
2657 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc));
2661 rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2662 tcg_gen_mov_i32(rw, loadval);
2663 /* FIXME: Should address writeback happen with the masked or
2665 switch ((insn >> 3) & 7) {
2666 case 3: /* Post-increment. */
2667 tcg_gen_addi_i32(AREG(insn, 0), addr, 4);
2669 case 4: /* Pre-decrement. */
2670 tcg_gen_mov_i32(AREG(insn, 0), addr);
2675 DISAS_INSN(from_mac)
2681 rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2682 accnum = (insn >> 9) & 3;
2683 acc = MACREG(accnum);
2684 if (s->env->macsr & MACSR_FI) {
2685 gen_helper_get_macf(rx, cpu_env, acc);
2686 } else if ((s->env->macsr & MACSR_OMC) == 0) {
2687 tcg_gen_trunc_i64_i32(rx, acc);
2688 } else if (s->env->macsr & MACSR_SU) {
2689 gen_helper_get_macs(rx, acc);
2691 gen_helper_get_macu(rx, acc);
2694 tcg_gen_movi_i64(acc, 0);
2695 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2699 DISAS_INSN(move_mac)
2701 /* FIXME: This can be done without a helper. */
2705 dest = tcg_const_i32((insn >> 9) & 3);
2706 gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src));
2707 gen_mac_clear_flags();
2708 gen_helper_mac_set_flags(cpu_env, dest);
2711 DISAS_INSN(from_macsr)
2715 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2716 tcg_gen_mov_i32(reg, QREG_MACSR);
2719 DISAS_INSN(from_mask)
2722 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2723 tcg_gen_mov_i32(reg, QREG_MAC_MASK);
2726 DISAS_INSN(from_mext)
2730 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2731 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2732 if (s->env->macsr & MACSR_FI)
2733 gen_helper_get_mac_extf(reg, cpu_env, acc);
2735 gen_helper_get_mac_exti(reg, cpu_env, acc);
2738 DISAS_INSN(macsr_to_ccr)
2740 tcg_gen_movi_i32(QREG_CC_X, 0);
2741 tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
2742 s->cc_op = CC_OP_FLAGS;
2750 accnum = (insn >> 9) & 3;
2751 acc = MACREG(accnum);
2752 SRC_EA(env, val, OS_LONG, 0, NULL);
2753 if (s->env->macsr & MACSR_FI) {
2754 tcg_gen_ext_i32_i64(acc, val);
2755 tcg_gen_shli_i64(acc, acc, 8);
2756 } else if (s->env->macsr & MACSR_SU) {
2757 tcg_gen_ext_i32_i64(acc, val);
2759 tcg_gen_extu_i32_i64(acc, val);
2761 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2762 gen_mac_clear_flags();
2763 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum));
2766 DISAS_INSN(to_macsr)
2769 SRC_EA(env, val, OS_LONG, 0, NULL);
2770 gen_helper_set_macsr(cpu_env, val);
2777 SRC_EA(env, val, OS_LONG, 0, NULL);
2778 tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
2785 SRC_EA(env, val, OS_LONG, 0, NULL);
2786 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2787 if (s->env->macsr & MACSR_FI)
2788 gen_helper_set_mac_extf(cpu_env, val, acc);
2789 else if (s->env->macsr & MACSR_SU)
2790 gen_helper_set_mac_exts(cpu_env, val, acc);
2792 gen_helper_set_mac_extu(cpu_env, val, acc);
2795 static disas_proc opcode_table[65536];
2798 register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask)
2804 /* Sanity check. All set bits must be included in the mask. */
2805 if (opcode & ~mask) {
2807 "qemu internal error: bogus opcode definition %04x/%04x\n",
2811 /* This could probably be cleverer. For now just optimize the case where
2812 the top bits are known. */
2813 /* Find the first zero bit in the mask. */
2815 while ((i & mask) != 0)
2817 /* Iterate over all combinations of this and lower bits. */
2822 from = opcode & ~(i - 1);
2824 for (i = from; i < to; i++) {
2825 if ((i & mask) == opcode)
2826 opcode_table[i] = proc;
2830 /* Register m68k opcode handlers. Order is important.
2831 Later insn override earlier ones. */
2832 void register_m68k_insns (CPUM68KState *env)
2834 #define INSN(name, opcode, mask, feature) do { \
2835 if (m68k_feature(env, M68K_FEATURE_##feature)) \
2836 register_opcode(disas_##name, 0x##opcode, 0x##mask); \
2838 INSN(undef, 0000, 0000, CF_ISA_A);
2839 INSN(arith_im, 0080, fff8, CF_ISA_A);
2840 INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
2841 INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
2842 INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
2843 INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
2844 INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
2845 INSN(arith_im, 0280, fff8, CF_ISA_A);
2846 INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
2847 INSN(arith_im, 0480, fff8, CF_ISA_A);
2848 INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
2849 INSN(arith_im, 0680, fff8, CF_ISA_A);
2850 INSN(bitop_im, 0800, ffc0, CF_ISA_A);
2851 INSN(bitop_im, 0840, ffc0, CF_ISA_A);
2852 INSN(bitop_im, 0880, ffc0, CF_ISA_A);
2853 INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
2854 INSN(arith_im, 0a80, fff8, CF_ISA_A);
2855 INSN(arith_im, 0c00, ff38, CF_ISA_A);
2856 INSN(move, 1000, f000, CF_ISA_A);
2857 INSN(move, 2000, f000, CF_ISA_A);
2858 INSN(move, 3000, f000, CF_ISA_A);
2859 INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC);
2860 INSN(negx, 4080, fff8, CF_ISA_A);
2861 INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
2862 INSN(lea, 41c0, f1c0, CF_ISA_A);
2863 INSN(clr, 4200, ff00, CF_ISA_A);
2864 INSN(undef, 42c0, ffc0, CF_ISA_A);
2865 INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
2866 INSN(neg, 4480, fff8, CF_ISA_A);
2867 INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
2868 INSN(not, 4680, fff8, CF_ISA_A);
2869 INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
2870 INSN(pea, 4840, ffc0, CF_ISA_A);
2871 INSN(swap, 4840, fff8, CF_ISA_A);
2872 INSN(movem, 48c0, fbc0, CF_ISA_A);
2873 INSN(ext, 4880, fff8, CF_ISA_A);
2874 INSN(ext, 48c0, fff8, CF_ISA_A);
2875 INSN(ext, 49c0, fff8, CF_ISA_A);
2876 INSN(tst, 4a00, ff00, CF_ISA_A);
2877 INSN(tas, 4ac0, ffc0, CF_ISA_B);
2878 INSN(halt, 4ac8, ffff, CF_ISA_A);
2879 INSN(pulse, 4acc, ffff, CF_ISA_A);
2880 INSN(illegal, 4afc, ffff, CF_ISA_A);
2881 INSN(mull, 4c00, ffc0, CF_ISA_A);
2882 INSN(divl, 4c40, ffc0, CF_ISA_A);
2883 INSN(sats, 4c80, fff8, CF_ISA_B);
2884 INSN(trap, 4e40, fff0, CF_ISA_A);
2885 INSN(link, 4e50, fff8, CF_ISA_A);
2886 INSN(unlk, 4e58, fff8, CF_ISA_A);
2887 INSN(move_to_usp, 4e60, fff8, USP);
2888 INSN(move_from_usp, 4e68, fff8, USP);
2889 INSN(nop, 4e71, ffff, CF_ISA_A);
2890 INSN(stop, 4e72, ffff, CF_ISA_A);
2891 INSN(rte, 4e73, ffff, CF_ISA_A);
2892 INSN(rts, 4e75, ffff, CF_ISA_A);
2893 INSN(movec, 4e7b, ffff, CF_ISA_A);
2894 INSN(jump, 4e80, ffc0, CF_ISA_A);
2895 INSN(jump, 4ec0, ffc0, CF_ISA_A);
2896 INSN(addsubq, 5180, f1c0, CF_ISA_A);
2897 INSN(scc, 50c0, f0f8, CF_ISA_A);
2898 INSN(addsubq, 5080, f1c0, CF_ISA_A);
2899 INSN(tpf, 51f8, fff8, CF_ISA_A);
2901 /* Branch instructions. */
2902 INSN(branch, 6000, f000, CF_ISA_A);
2903 /* Disable long branch instructions, then add back the ones we want. */
2904 INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */
2905 INSN(branch, 60ff, f0ff, CF_ISA_B);
2906 INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */
2907 INSN(branch, 60ff, ffff, BRAL);
2909 INSN(moveq, 7000, f100, CF_ISA_A);
2910 INSN(mvzs, 7100, f100, CF_ISA_B);
2911 INSN(or, 8000, f000, CF_ISA_A);
2912 INSN(divw, 80c0, f0c0, CF_ISA_A);
2913 INSN(addsub, 9000, f000, CF_ISA_A);
2914 INSN(subx, 9180, f1f8, CF_ISA_A);
2915 INSN(suba, 91c0, f1c0, CF_ISA_A);
2917 INSN(undef_mac, a000, f000, CF_ISA_A);
2918 INSN(mac, a000, f100, CF_EMAC);
2919 INSN(from_mac, a180, f9b0, CF_EMAC);
2920 INSN(move_mac, a110, f9fc, CF_EMAC);
2921 INSN(from_macsr,a980, f9f0, CF_EMAC);
2922 INSN(from_mask, ad80, fff0, CF_EMAC);
2923 INSN(from_mext, ab80, fbf0, CF_EMAC);
2924 INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC);
2925 INSN(to_mac, a100, f9c0, CF_EMAC);
2926 INSN(to_macsr, a900, ffc0, CF_EMAC);
2927 INSN(to_mext, ab00, fbc0, CF_EMAC);
2928 INSN(to_mask, ad00, ffc0, CF_EMAC);
2930 INSN(mov3q, a140, f1c0, CF_ISA_B);
2931 INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
2932 INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
2933 INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
2934 INSN(cmp, b080, f1c0, CF_ISA_A);
2935 INSN(cmpa, b1c0, f1c0, CF_ISA_A);
2936 INSN(eor, b180, f1c0, CF_ISA_A);
2937 INSN(and, c000, f000, CF_ISA_A);
2938 INSN(mulw, c0c0, f0c0, CF_ISA_A);
2939 INSN(addsub, d000, f000, CF_ISA_A);
2940 INSN(addx, d180, f1f8, CF_ISA_A);
2941 INSN(adda, d1c0, f1c0, CF_ISA_A);
2942 INSN(shift_im, e080, f0f0, CF_ISA_A);
2943 INSN(shift_reg, e0a0, f0f0, CF_ISA_A);
2944 INSN(undef_fpu, f000, f000, CF_ISA_A);
2945 INSN(fpu, f200, ffc0, CF_FPU);
2946 INSN(fbcc, f280, ffc0, CF_FPU);
2947 INSN(frestore, f340, ffc0, CF_FPU);
2948 INSN(fsave, f340, ffc0, CF_FPU);
2949 INSN(intouch, f340, ffc0, CF_ISA_A);
2950 INSN(cpushl, f428, ff38, CF_ISA_A);
2951 INSN(wddata, fb00, ff00, CF_ISA_A);
2952 INSN(wdebug, fbc0, ffc0, CF_ISA_A);
2956 /* ??? Some of this implementation is not exception safe. We should always
2957 write back the result to memory before setting the condition codes. */
2958 static void disas_m68k_insn(CPUM68KState * env, DisasContext *s)
2962 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
2963 tcg_gen_debug_insn_start(s->pc);
2966 insn = cpu_lduw_code(env, s->pc);
2969 opcode_table[insn](env, s, insn);
2972 /* generate intermediate code for basic block 'tb'. */
2974 gen_intermediate_code_internal(CPUM68KState *env, TranslationBlock *tb,
2977 DisasContext dc1, *dc = &dc1;
2978 uint16_t *gen_opc_end;
2981 target_ulong pc_start;
2986 /* generate intermediate code */
2991 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
2994 dc->is_jmp = DISAS_NEXT;
2996 dc->cc_op = CC_OP_DYNAMIC;
2997 dc->singlestep_enabled = env->singlestep_enabled;
2998 dc->fpcr = env->fpcr;
2999 dc->user = (env->sr & SR_S) == 0;
3004 max_insns = tb->cflags & CF_COUNT_MASK;
3006 max_insns = CF_COUNT_MASK;
3010 pc_offset = dc->pc - pc_start;
3011 gen_throws_exception = NULL;
3012 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
3013 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
3014 if (bp->pc == dc->pc) {
3015 gen_exception(dc, dc->pc, EXCP_DEBUG);
3016 dc->is_jmp = DISAS_JUMP;
3024 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3028 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3030 tcg_ctx.gen_opc_pc[lj] = dc->pc;
3031 tcg_ctx.gen_opc_instr_start[lj] = 1;
3032 tcg_ctx.gen_opc_icount[lj] = num_insns;
3034 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
3036 dc->insn_pc = dc->pc;
3037 disas_m68k_insn(env, dc);
3039 } while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
3040 !env->singlestep_enabled &&
3042 (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
3043 num_insns < max_insns);
3045 if (tb->cflags & CF_LAST_IO)
3047 if (unlikely(env->singlestep_enabled)) {
3048 /* Make sure the pc is updated, and raise a debug exception. */
3050 gen_flush_cc_op(dc);
3051 tcg_gen_movi_i32(QREG_PC, dc->pc);
3053 gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG));
3055 switch(dc->is_jmp) {
3057 gen_flush_cc_op(dc);
3058 gen_jmp_tb(dc, 0, dc->pc);
3063 gen_flush_cc_op(dc);
3064 /* indicate that the hash table must be used to find the next TB */
3068 /* nothing more to generate */
3072 gen_tb_end(tb, num_insns);
3073 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
3076 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3077 qemu_log("----------------\n");
3078 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3079 log_target_disas(env, pc_start, dc->pc - pc_start, 0);
3084 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3087 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3089 tb->size = dc->pc - pc_start;
3090 tb->icount = num_insns;
3094 //expand_target_qops();
3097 void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb)
3099 gen_intermediate_code_internal(env, tb, 0);
3102 void gen_intermediate_code_pc(CPUM68KState *env, TranslationBlock *tb)
3104 gen_intermediate_code_internal(env, tb, 1);
3107 void cpu_dump_state(CPUM68KState *env, FILE *f, fprintf_function cpu_fprintf,
3113 for (i = 0; i < 8; i++)
3115 u.d = env->fregs[i];
3116 cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
3117 i, env->dregs[i], i, env->aregs[i],
3118 i, u.l.upper, u.l.lower, *(double *)&u.d);
3120 cpu_fprintf (f, "PC = %08x ", env->pc);
3122 cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-',
3123 (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-',
3124 (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-');
3125 cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result);
3128 void restore_state_to_opc(CPUM68KState *env, TranslationBlock *tb, int pc_pos)
3130 env->pc = tcg_ctx.gen_opc_pc[pc_pos];