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"
25 #include "exec/cpu_ldst.h"
27 #include "exec/helper-proto.h"
28 #include "exec/helper-gen.h"
30 #include "trace-tcg.h"
33 //#define DEBUG_DISPATCH 1
35 /* Fake floating point. */
36 #define tcg_gen_mov_f64 tcg_gen_mov_i64
37 #define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
38 #define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
40 #define DEFO32(name, offset) static TCGv QREG_##name;
41 #define DEFO64(name, offset) static TCGv_i64 QREG_##name;
42 #define DEFF64(name, offset) static TCGv_i64 QREG_##name;
48 static TCGv_i32 cpu_halted;
49 static TCGv_i32 cpu_exception_index;
51 static TCGv_ptr cpu_env;
53 static char cpu_reg_names[3*8*3 + 5*4];
54 static TCGv cpu_dregs[8];
55 static TCGv cpu_aregs[8];
56 static TCGv_i64 cpu_fregs[8];
57 static TCGv_i64 cpu_macc[4];
59 #define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7]
60 #define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7]
61 #define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7]
62 #define MACREG(acc) cpu_macc[acc]
63 #define QREG_SP cpu_aregs[7]
65 static TCGv NULL_QREG;
66 #define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
67 /* Used to distinguish stores from bad addressing modes. */
68 static TCGv store_dummy;
70 #include "exec/gen-icount.h"
72 void m68k_tcg_init(void)
77 #define DEFO32(name, offset) QREG_##name = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUM68KState, offset), #name);
78 #define DEFO64(name, offset) QREG_##name = tcg_global_mem_new_i64(TCG_AREG0, offsetof(CPUM68KState, offset), #name);
79 #define DEFF64(name, offset) DEFO64(name, offset)
85 cpu_halted = tcg_global_mem_new_i32(TCG_AREG0,
86 -offsetof(M68kCPU, env) +
87 offsetof(CPUState, halted), "HALTED");
88 cpu_exception_index = tcg_global_mem_new_i32(TCG_AREG0,
89 -offsetof(M68kCPU, env) +
90 offsetof(CPUState, exception_index),
93 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
96 for (i = 0; i < 8; i++) {
98 cpu_dregs[i] = tcg_global_mem_new(TCG_AREG0,
99 offsetof(CPUM68KState, dregs[i]), p);
101 sprintf(p, "A%d", i);
102 cpu_aregs[i] = tcg_global_mem_new(TCG_AREG0,
103 offsetof(CPUM68KState, aregs[i]), p);
105 sprintf(p, "F%d", i);
106 cpu_fregs[i] = tcg_global_mem_new_i64(TCG_AREG0,
107 offsetof(CPUM68KState, fregs[i]), p);
110 for (i = 0; i < 4; i++) {
111 sprintf(p, "ACC%d", i);
112 cpu_macc[i] = tcg_global_mem_new_i64(TCG_AREG0,
113 offsetof(CPUM68KState, macc[i]), p);
117 NULL_QREG = tcg_global_mem_new(TCG_AREG0, -4, "NULL");
118 store_dummy = tcg_global_mem_new(TCG_AREG0, -8, "NULL");
121 /* internal defines */
122 typedef struct DisasContext {
124 target_ulong insn_pc; /* Start of the current instruction. */
130 struct TranslationBlock *tb;
131 int singlestep_enabled;
136 #define DISAS_JUMP_NEXT 4
138 #if defined(CONFIG_USER_ONLY)
141 #define IS_USER(s) s->user
144 /* XXX: move that elsewhere */
145 /* ??? Fix exceptions. */
146 static void *gen_throws_exception;
147 #define gen_last_qop NULL
155 typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn);
157 #ifdef DEBUG_DISPATCH
158 #define DISAS_INSN(name) \
159 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
161 static void disas_##name(CPUM68KState *env, DisasContext *s, \
164 qemu_log("Dispatch " #name "\n"); \
165 real_disas_##name(s, env, insn); \
167 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
170 #define DISAS_INSN(name) \
171 static void disas_##name(CPUM68KState *env, DisasContext *s, \
175 /* Generate a load from the specified address. Narrow values are
176 sign extended to full register width. */
177 static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign)
180 int index = IS_USER(s);
181 tmp = tcg_temp_new_i32();
185 tcg_gen_qemu_ld8s(tmp, addr, index);
187 tcg_gen_qemu_ld8u(tmp, addr, index);
191 tcg_gen_qemu_ld16s(tmp, addr, index);
193 tcg_gen_qemu_ld16u(tmp, addr, index);
197 tcg_gen_qemu_ld32u(tmp, addr, index);
200 g_assert_not_reached();
202 gen_throws_exception = gen_last_qop;
206 static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr)
209 int index = IS_USER(s);
210 tmp = tcg_temp_new_i64();
211 tcg_gen_qemu_ldf64(tmp, addr, index);
212 gen_throws_exception = gen_last_qop;
216 /* Generate a store. */
217 static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val)
219 int index = IS_USER(s);
222 tcg_gen_qemu_st8(val, addr, index);
225 tcg_gen_qemu_st16(val, addr, index);
229 tcg_gen_qemu_st32(val, addr, index);
232 g_assert_not_reached();
234 gen_throws_exception = gen_last_qop;
237 static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val)
239 int index = IS_USER(s);
240 tcg_gen_qemu_stf64(val, addr, index);
241 gen_throws_exception = gen_last_qop;
250 /* Generate an unsigned load if VAL is 0 a signed load if val is -1,
251 otherwise generate a store. */
252 static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val,
255 if (what == EA_STORE) {
256 gen_store(s, opsize, addr, val);
259 return gen_load(s, opsize, addr, what == EA_LOADS);
263 /* Read a 32-bit immediate constant. */
264 static inline uint32_t read_im32(CPUM68KState *env, DisasContext *s)
267 im = ((uint32_t)cpu_lduw_code(env, s->pc)) << 16;
269 im |= cpu_lduw_code(env, s->pc);
274 /* Calculate and address index. */
275 static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
280 add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12);
281 if ((ext & 0x800) == 0) {
282 tcg_gen_ext16s_i32(tmp, add);
285 scale = (ext >> 9) & 3;
287 tcg_gen_shli_i32(tmp, add, scale);
293 /* Handle a base + index + displacement effective addresss.
294 A NULL_QREG base means pc-relative. */
295 static TCGv gen_lea_indexed(CPUM68KState *env, DisasContext *s, TCGv base)
304 ext = cpu_lduw_code(env, s->pc);
307 if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX))
311 /* full extension word format */
312 if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
315 if ((ext & 0x30) > 0x10) {
316 /* base displacement */
317 if ((ext & 0x30) == 0x20) {
318 bd = (int16_t)cpu_lduw_code(env, s->pc);
321 bd = read_im32(env, s);
326 tmp = tcg_temp_new();
327 if ((ext & 0x44) == 0) {
329 add = gen_addr_index(ext, tmp);
333 if ((ext & 0x80) == 0) {
334 /* base not suppressed */
335 if (IS_NULL_QREG(base)) {
336 base = tcg_const_i32(offset + bd);
339 if (!IS_NULL_QREG(add)) {
340 tcg_gen_add_i32(tmp, add, base);
346 if (!IS_NULL_QREG(add)) {
348 tcg_gen_addi_i32(tmp, add, bd);
352 add = tcg_const_i32(bd);
354 if ((ext & 3) != 0) {
355 /* memory indirect */
356 base = gen_load(s, OS_LONG, add, 0);
357 if ((ext & 0x44) == 4) {
358 add = gen_addr_index(ext, tmp);
359 tcg_gen_add_i32(tmp, add, base);
365 /* outer displacement */
366 if ((ext & 3) == 2) {
367 od = (int16_t)cpu_lduw_code(env, s->pc);
370 od = read_im32(env, s);
376 tcg_gen_addi_i32(tmp, add, od);
381 /* brief extension word format */
382 tmp = tcg_temp_new();
383 add = gen_addr_index(ext, tmp);
384 if (!IS_NULL_QREG(base)) {
385 tcg_gen_add_i32(tmp, add, base);
387 tcg_gen_addi_i32(tmp, tmp, (int8_t)ext);
389 tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext);
396 /* Update the CPU env CC_OP state. */
397 static inline void gen_flush_cc_op(DisasContext *s)
399 if (s->cc_op != CC_OP_DYNAMIC)
400 tcg_gen_movi_i32(QREG_CC_OP, s->cc_op);
403 /* Evaluate all the CC flags. */
404 static inline void gen_flush_flags(DisasContext *s)
406 if (s->cc_op == CC_OP_FLAGS)
409 gen_helper_flush_flags(cpu_env, QREG_CC_OP);
410 s->cc_op = CC_OP_FLAGS;
413 static void gen_logic_cc(DisasContext *s, TCGv val)
415 tcg_gen_mov_i32(QREG_CC_DEST, val);
416 s->cc_op = CC_OP_LOGIC;
419 static void gen_update_cc_add(TCGv dest, TCGv src)
421 tcg_gen_mov_i32(QREG_CC_DEST, dest);
422 tcg_gen_mov_i32(QREG_CC_SRC, src);
425 static inline int opsize_bytes(int opsize)
428 case OS_BYTE: return 1;
429 case OS_WORD: return 2;
430 case OS_LONG: return 4;
431 case OS_SINGLE: return 4;
432 case OS_DOUBLE: return 8;
434 g_assert_not_reached();
438 /* Assign value to a register. If the width is less than the register width
439 only the low part of the register is set. */
440 static void gen_partset_reg(int opsize, TCGv reg, TCGv val)
445 tcg_gen_andi_i32(reg, reg, 0xffffff00);
446 tmp = tcg_temp_new();
447 tcg_gen_ext8u_i32(tmp, val);
448 tcg_gen_or_i32(reg, reg, tmp);
451 tcg_gen_andi_i32(reg, reg, 0xffff0000);
452 tmp = tcg_temp_new();
453 tcg_gen_ext16u_i32(tmp, val);
454 tcg_gen_or_i32(reg, reg, tmp);
458 tcg_gen_mov_i32(reg, val);
461 g_assert_not_reached();
465 /* Sign or zero extend a value. */
466 static inline TCGv gen_extend(TCGv val, int opsize, int sign)
472 tmp = tcg_temp_new();
474 tcg_gen_ext8s_i32(tmp, val);
476 tcg_gen_ext8u_i32(tmp, val);
479 tmp = tcg_temp_new();
481 tcg_gen_ext16s_i32(tmp, val);
483 tcg_gen_ext16u_i32(tmp, val);
490 g_assert_not_reached();
495 /* Generate code for an "effective address". Does not adjust the base
496 register for autoincrement addressing modes. */
497 static TCGv gen_lea(CPUM68KState *env, DisasContext *s, uint16_t insn,
505 switch ((insn >> 3) & 7) {
506 case 0: /* Data register direct. */
507 case 1: /* Address register direct. */
509 case 2: /* Indirect register */
510 case 3: /* Indirect postincrement. */
511 return AREG(insn, 0);
512 case 4: /* Indirect predecrememnt. */
514 tmp = tcg_temp_new();
515 tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
517 case 5: /* Indirect displacement. */
519 tmp = tcg_temp_new();
520 ext = cpu_lduw_code(env, s->pc);
522 tcg_gen_addi_i32(tmp, reg, (int16_t)ext);
524 case 6: /* Indirect index + displacement. */
526 return gen_lea_indexed(env, s, reg);
529 case 0: /* Absolute short. */
530 offset = cpu_ldsw_code(env, s->pc);
532 return tcg_const_i32(offset);
533 case 1: /* Absolute long. */
534 offset = read_im32(env, s);
535 return tcg_const_i32(offset);
536 case 2: /* pc displacement */
538 offset += cpu_ldsw_code(env, s->pc);
540 return tcg_const_i32(offset);
541 case 3: /* pc index+displacement. */
542 return gen_lea_indexed(env, s, NULL_QREG);
543 case 4: /* Immediate. */
548 /* Should never happen. */
552 /* Helper function for gen_ea. Reuse the computed address between the
553 for read/write operands. */
554 static inline TCGv gen_ea_once(CPUM68KState *env, DisasContext *s,
555 uint16_t insn, int opsize, TCGv val,
556 TCGv *addrp, ea_what what)
560 if (addrp && what == EA_STORE) {
563 tmp = gen_lea(env, s, insn, opsize);
564 if (IS_NULL_QREG(tmp))
569 return gen_ldst(s, opsize, tmp, val, what);
572 /* Generate code to load/store a value from/into an EA. If VAL > 0 this is
573 a write otherwise it is a read (0 == sign extend, -1 == zero extend).
574 ADDRP is non-null for readwrite operands. */
575 static TCGv gen_ea(CPUM68KState *env, DisasContext *s, uint16_t insn,
576 int opsize, TCGv val, TCGv *addrp, ea_what what)
582 switch ((insn >> 3) & 7) {
583 case 0: /* Data register direct. */
585 if (what == EA_STORE) {
586 gen_partset_reg(opsize, reg, val);
589 return gen_extend(reg, opsize, what == EA_LOADS);
591 case 1: /* Address register direct. */
593 if (what == EA_STORE) {
594 tcg_gen_mov_i32(reg, val);
597 return gen_extend(reg, opsize, what == EA_LOADS);
599 case 2: /* Indirect register */
601 return gen_ldst(s, opsize, reg, val, what);
602 case 3: /* Indirect postincrement. */
604 result = gen_ldst(s, opsize, reg, val, what);
605 /* ??? This is not exception safe. The instruction may still
606 fault after this point. */
607 if (what == EA_STORE || !addrp)
608 tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize));
610 case 4: /* Indirect predecrememnt. */
613 if (addrp && what == EA_STORE) {
616 tmp = gen_lea(env, s, insn, opsize);
617 if (IS_NULL_QREG(tmp))
622 result = gen_ldst(s, opsize, tmp, val, what);
623 /* ??? This is not exception safe. The instruction may still
624 fault after this point. */
625 if (what == EA_STORE || !addrp) {
627 tcg_gen_mov_i32(reg, tmp);
631 case 5: /* Indirect displacement. */
632 case 6: /* Indirect index + displacement. */
633 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
636 case 0: /* Absolute short. */
637 case 1: /* Absolute long. */
638 case 2: /* pc displacement */
639 case 3: /* pc index+displacement. */
640 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
641 case 4: /* Immediate. */
642 /* Sign extend values for consistency. */
645 if (what == EA_LOADS) {
646 offset = cpu_ldsb_code(env, s->pc + 1);
648 offset = cpu_ldub_code(env, s->pc + 1);
653 if (what == EA_LOADS) {
654 offset = cpu_ldsw_code(env, s->pc);
656 offset = cpu_lduw_code(env, s->pc);
661 offset = read_im32(env, s);
664 g_assert_not_reached();
666 return tcg_const_i32(offset);
671 /* Should never happen. */
675 /* This generates a conditional branch, clobbering all temporaries. */
676 static void gen_jmpcc(DisasContext *s, int cond, TCGLabel *l1)
680 /* TODO: Optimize compare/branch pairs rather than always flushing
681 flag state to CC_OP_FLAGS. */
689 case 2: /* HI (!C && !Z) */
690 tmp = tcg_temp_new();
691 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
692 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
694 case 3: /* LS (C || Z) */
695 tmp = tcg_temp_new();
696 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
697 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
699 case 4: /* CC (!C) */
700 tmp = tcg_temp_new();
701 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
702 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
705 tmp = tcg_temp_new();
706 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
707 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
709 case 6: /* NE (!Z) */
710 tmp = tcg_temp_new();
711 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
712 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
715 tmp = tcg_temp_new();
716 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
717 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
719 case 8: /* VC (!V) */
720 tmp = tcg_temp_new();
721 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
722 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
725 tmp = tcg_temp_new();
726 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
727 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
729 case 10: /* PL (!N) */
730 tmp = tcg_temp_new();
731 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
732 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
734 case 11: /* MI (N) */
735 tmp = tcg_temp_new();
736 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
737 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
739 case 12: /* GE (!(N ^ V)) */
740 tmp = tcg_temp_new();
741 assert(CCF_V == (CCF_N >> 2));
742 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
743 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
744 tcg_gen_andi_i32(tmp, tmp, CCF_V);
745 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
747 case 13: /* LT (N ^ V) */
748 tmp = tcg_temp_new();
749 assert(CCF_V == (CCF_N >> 2));
750 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
751 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
752 tcg_gen_andi_i32(tmp, tmp, CCF_V);
753 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
755 case 14: /* GT (!(Z || (N ^ V))) */
756 tmp = tcg_temp_new();
757 assert(CCF_V == (CCF_N >> 2));
758 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
759 tcg_gen_shri_i32(tmp, tmp, 2);
760 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
761 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
762 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
764 case 15: /* LE (Z || (N ^ V)) */
765 tmp = tcg_temp_new();
766 assert(CCF_V == (CCF_N >> 2));
767 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
768 tcg_gen_shri_i32(tmp, tmp, 2);
769 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
770 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
771 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
774 /* Should ever happen. */
785 l1 = gen_new_label();
786 cond = (insn >> 8) & 0xf;
788 tcg_gen_andi_i32(reg, reg, 0xffffff00);
789 /* This is safe because we modify the reg directly, with no other values
791 gen_jmpcc(s, cond ^ 1, l1);
792 tcg_gen_ori_i32(reg, reg, 0xff);
796 /* Force a TB lookup after an instruction that changes the CPU state. */
797 static void gen_lookup_tb(DisasContext *s)
800 tcg_gen_movi_i32(QREG_PC, s->pc);
801 s->is_jmp = DISAS_UPDATE;
804 /* Generate a jump to an immediate address. */
805 static void gen_jmp_im(DisasContext *s, uint32_t dest)
808 tcg_gen_movi_i32(QREG_PC, dest);
809 s->is_jmp = DISAS_JUMP;
812 /* Generate a jump to the address in qreg DEST. */
813 static void gen_jmp(DisasContext *s, TCGv dest)
816 tcg_gen_mov_i32(QREG_PC, dest);
817 s->is_jmp = DISAS_JUMP;
820 static void gen_exception(DisasContext *s, uint32_t where, int nr)
823 gen_jmp_im(s, where);
824 gen_helper_raise_exception(cpu_env, tcg_const_i32(nr));
827 static inline void gen_addr_fault(DisasContext *s)
829 gen_exception(s, s->insn_pc, EXCP_ADDRESS);
832 #define SRC_EA(env, result, opsize, op_sign, addrp) do { \
833 result = gen_ea(env, s, insn, opsize, NULL_QREG, addrp, \
834 op_sign ? EA_LOADS : EA_LOADU); \
835 if (IS_NULL_QREG(result)) { \
841 #define DEST_EA(env, insn, opsize, val, addrp) do { \
842 TCGv ea_result = gen_ea(env, s, insn, opsize, val, addrp, EA_STORE); \
843 if (IS_NULL_QREG(ea_result)) { \
849 /* Generate a jump to an immediate address. */
850 static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest)
852 TranslationBlock *tb;
855 if (unlikely(s->singlestep_enabled)) {
856 gen_exception(s, dest, EXCP_DEBUG);
857 } else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) ||
858 (s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
860 tcg_gen_movi_i32(QREG_PC, dest);
861 tcg_gen_exit_tb((uintptr_t)tb + n);
866 s->is_jmp = DISAS_TB_JUMP;
869 DISAS_INSN(undef_mac)
871 gen_exception(s, s->pc - 2, EXCP_LINEA);
874 DISAS_INSN(undef_fpu)
876 gen_exception(s, s->pc - 2, EXCP_LINEF);
881 M68kCPU *cpu = m68k_env_get_cpu(env);
883 gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
884 cpu_abort(CPU(cpu), "Illegal instruction: %04x @ %08x", insn, s->pc - 2);
894 sign = (insn & 0x100) != 0;
896 tmp = tcg_temp_new();
898 tcg_gen_ext16s_i32(tmp, reg);
900 tcg_gen_ext16u_i32(tmp, reg);
901 SRC_EA(env, src, OS_WORD, sign, NULL);
902 tcg_gen_mul_i32(tmp, tmp, src);
903 tcg_gen_mov_i32(reg, tmp);
904 /* Unlike m68k, coldfire always clears the overflow bit. */
905 gen_logic_cc(s, tmp);
915 sign = (insn & 0x100) != 0;
918 tcg_gen_ext16s_i32(QREG_DIV1, reg);
920 tcg_gen_ext16u_i32(QREG_DIV1, reg);
922 SRC_EA(env, src, OS_WORD, sign, NULL);
923 tcg_gen_mov_i32(QREG_DIV2, src);
925 gen_helper_divs(cpu_env, tcg_const_i32(1));
927 gen_helper_divu(cpu_env, tcg_const_i32(1));
930 tmp = tcg_temp_new();
931 src = tcg_temp_new();
932 tcg_gen_ext16u_i32(tmp, QREG_DIV1);
933 tcg_gen_shli_i32(src, QREG_DIV2, 16);
934 tcg_gen_or_i32(reg, tmp, src);
935 s->cc_op = CC_OP_FLAGS;
945 ext = cpu_lduw_code(env, s->pc);
948 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
953 tcg_gen_mov_i32(QREG_DIV1, num);
954 SRC_EA(env, den, OS_LONG, 0, NULL);
955 tcg_gen_mov_i32(QREG_DIV2, den);
957 gen_helper_divs(cpu_env, tcg_const_i32(0));
959 gen_helper_divu(cpu_env, tcg_const_i32(0));
961 if ((ext & 7) == ((ext >> 12) & 7)) {
963 tcg_gen_mov_i32 (reg, QREG_DIV1);
966 tcg_gen_mov_i32 (reg, QREG_DIV2);
968 s->cc_op = CC_OP_FLAGS;
980 add = (insn & 0x4000) != 0;
982 dest = tcg_temp_new();
984 SRC_EA(env, tmp, OS_LONG, 0, &addr);
988 SRC_EA(env, src, OS_LONG, 0, NULL);
991 tcg_gen_add_i32(dest, tmp, src);
992 gen_helper_xflag_lt(QREG_CC_X, dest, src);
993 s->cc_op = CC_OP_ADD;
995 gen_helper_xflag_lt(QREG_CC_X, tmp, src);
996 tcg_gen_sub_i32(dest, tmp, src);
997 s->cc_op = CC_OP_SUB;
999 gen_update_cc_add(dest, src);
1001 DEST_EA(env, insn, OS_LONG, dest, &addr);
1003 tcg_gen_mov_i32(reg, dest);
1008 /* Reverse the order of the bits in REG. */
1012 reg = DREG(insn, 0);
1013 gen_helper_bitrev(reg, reg);
1016 DISAS_INSN(bitop_reg)
1026 if ((insn & 0x38) != 0)
1030 op = (insn >> 6) & 3;
1031 SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
1032 src2 = DREG(insn, 9);
1033 dest = tcg_temp_new();
1036 tmp = tcg_temp_new();
1037 if (opsize == OS_BYTE)
1038 tcg_gen_andi_i32(tmp, src2, 7);
1040 tcg_gen_andi_i32(tmp, src2, 31);
1042 tmp = tcg_temp_new();
1043 tcg_gen_shr_i32(tmp, src1, src2);
1044 tcg_gen_andi_i32(tmp, tmp, 1);
1045 tcg_gen_shli_i32(tmp, tmp, 2);
1046 /* Clear CCF_Z if bit set. */
1047 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1048 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1050 tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
1053 tcg_gen_xor_i32(dest, src1, tmp);
1056 tcg_gen_not_i32(tmp, tmp);
1057 tcg_gen_and_i32(dest, src1, tmp);
1060 tcg_gen_or_i32(dest, src1, tmp);
1066 DEST_EA(env, insn, opsize, dest, &addr);
1072 reg = DREG(insn, 0);
1074 gen_helper_sats(reg, reg, QREG_CC_DEST);
1075 gen_logic_cc(s, reg);
1078 static void gen_push(DisasContext *s, TCGv val)
1082 tmp = tcg_temp_new();
1083 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1084 gen_store(s, OS_LONG, tmp, val);
1085 tcg_gen_mov_i32(QREG_SP, tmp);
1097 mask = cpu_lduw_code(env, s->pc);
1099 tmp = gen_lea(env, s, insn, OS_LONG);
1100 if (IS_NULL_QREG(tmp)) {
1104 addr = tcg_temp_new();
1105 tcg_gen_mov_i32(addr, tmp);
1106 is_load = ((insn & 0x0400) != 0);
1107 for (i = 0; i < 16; i++, mask >>= 1) {
1114 tmp = gen_load(s, OS_LONG, addr, 0);
1115 tcg_gen_mov_i32(reg, tmp);
1117 gen_store(s, OS_LONG, addr, reg);
1120 tcg_gen_addi_i32(addr, addr, 4);
1125 DISAS_INSN(bitop_im)
1135 if ((insn & 0x38) != 0)
1139 op = (insn >> 6) & 3;
1141 bitnum = cpu_lduw_code(env, s->pc);
1143 if (bitnum & 0xff00) {
1144 disas_undef(env, s, insn);
1148 SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
1151 if (opsize == OS_BYTE)
1157 tmp = tcg_temp_new();
1158 assert (CCF_Z == (1 << 2));
1160 tcg_gen_shri_i32(tmp, src1, bitnum - 2);
1161 else if (bitnum < 2)
1162 tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
1164 tcg_gen_mov_i32(tmp, src1);
1165 tcg_gen_andi_i32(tmp, tmp, CCF_Z);
1166 /* Clear CCF_Z if bit set. */
1167 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1168 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1172 tcg_gen_xori_i32(tmp, src1, mask);
1175 tcg_gen_andi_i32(tmp, src1, ~mask);
1178 tcg_gen_ori_i32(tmp, src1, mask);
1183 DEST_EA(env, insn, opsize, tmp, &addr);
1187 DISAS_INSN(arith_im)
1195 op = (insn >> 9) & 7;
1196 SRC_EA(env, src1, OS_LONG, 0, (op == 6) ? NULL : &addr);
1197 im = read_im32(env, s);
1198 dest = tcg_temp_new();
1201 tcg_gen_ori_i32(dest, src1, im);
1202 gen_logic_cc(s, dest);
1205 tcg_gen_andi_i32(dest, src1, im);
1206 gen_logic_cc(s, dest);
1209 tcg_gen_mov_i32(dest, src1);
1210 gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
1211 tcg_gen_subi_i32(dest, dest, im);
1212 gen_update_cc_add(dest, tcg_const_i32(im));
1213 s->cc_op = CC_OP_SUB;
1216 tcg_gen_mov_i32(dest, src1);
1217 tcg_gen_addi_i32(dest, dest, im);
1218 gen_update_cc_add(dest, tcg_const_i32(im));
1219 gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
1220 s->cc_op = CC_OP_ADD;
1223 tcg_gen_xori_i32(dest, src1, im);
1224 gen_logic_cc(s, dest);
1227 tcg_gen_mov_i32(dest, src1);
1228 tcg_gen_subi_i32(dest, dest, im);
1229 gen_update_cc_add(dest, tcg_const_i32(im));
1230 s->cc_op = CC_OP_SUB;
1236 DEST_EA(env, insn, OS_LONG, dest, &addr);
1244 reg = DREG(insn, 0);
1245 tcg_gen_bswap32_i32(reg, reg);
1255 switch (insn >> 12) {
1256 case 1: /* move.b */
1259 case 2: /* move.l */
1262 case 3: /* move.w */
1268 SRC_EA(env, src, opsize, 1, NULL);
1269 op = (insn >> 6) & 7;
1272 /* The value will already have been sign extended. */
1273 dest = AREG(insn, 9);
1274 tcg_gen_mov_i32(dest, src);
1278 dest_ea = ((insn >> 9) & 7) | (op << 3);
1279 DEST_EA(env, dest_ea, opsize, src, NULL);
1280 /* This will be correct because loads sign extend. */
1281 gen_logic_cc(s, src);
1290 reg = DREG(insn, 0);
1291 gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
1299 reg = AREG(insn, 9);
1300 tmp = gen_lea(env, s, insn, OS_LONG);
1301 if (IS_NULL_QREG(tmp)) {
1305 tcg_gen_mov_i32(reg, tmp);
1312 switch ((insn >> 6) & 3) {
1325 DEST_EA(env, insn, opsize, tcg_const_i32(0), NULL);
1326 gen_logic_cc(s, tcg_const_i32(0));
1329 static TCGv gen_get_ccr(DisasContext *s)
1334 dest = tcg_temp_new();
1335 tcg_gen_shli_i32(dest, QREG_CC_X, 4);
1336 tcg_gen_or_i32(dest, dest, QREG_CC_DEST);
1340 DISAS_INSN(move_from_ccr)
1345 ccr = gen_get_ccr(s);
1346 reg = DREG(insn, 0);
1347 gen_partset_reg(OS_WORD, reg, ccr);
1355 reg = DREG(insn, 0);
1356 src1 = tcg_temp_new();
1357 tcg_gen_mov_i32(src1, reg);
1358 tcg_gen_neg_i32(reg, src1);
1359 s->cc_op = CC_OP_SUB;
1360 gen_update_cc_add(reg, src1);
1361 gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
1362 s->cc_op = CC_OP_SUB;
1365 static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only)
1367 tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
1368 tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4);
1370 gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
1374 static void gen_set_sr(CPUM68KState *env, DisasContext *s, uint16_t insn,
1380 s->cc_op = CC_OP_FLAGS;
1381 if ((insn & 0x38) == 0)
1383 tmp = tcg_temp_new();
1384 reg = DREG(insn, 0);
1385 tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
1386 tcg_gen_shri_i32(tmp, reg, 4);
1387 tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
1389 gen_helper_set_sr(cpu_env, reg);
1392 else if ((insn & 0x3f) == 0x3c)
1395 val = cpu_lduw_code(env, s->pc);
1397 gen_set_sr_im(s, val, ccr_only);
1400 disas_undef(env, s, insn);
1403 DISAS_INSN(move_to_ccr)
1405 gen_set_sr(env, s, insn, 1);
1412 reg = DREG(insn, 0);
1413 tcg_gen_not_i32(reg, reg);
1414 gen_logic_cc(s, reg);
1423 src1 = tcg_temp_new();
1424 src2 = tcg_temp_new();
1425 reg = DREG(insn, 0);
1426 tcg_gen_shli_i32(src1, reg, 16);
1427 tcg_gen_shri_i32(src2, reg, 16);
1428 tcg_gen_or_i32(reg, src1, src2);
1429 gen_logic_cc(s, reg);
1436 tmp = gen_lea(env, s, insn, OS_LONG);
1437 if (IS_NULL_QREG(tmp)) {
1450 reg = DREG(insn, 0);
1451 op = (insn >> 6) & 7;
1452 tmp = tcg_temp_new();
1454 tcg_gen_ext16s_i32(tmp, reg);
1456 tcg_gen_ext8s_i32(tmp, reg);
1458 gen_partset_reg(OS_WORD, reg, tmp);
1460 tcg_gen_mov_i32(reg, tmp);
1461 gen_logic_cc(s, tmp);
1469 switch ((insn >> 6) & 3) {
1482 SRC_EA(env, tmp, opsize, 1, NULL);
1483 gen_logic_cc(s, tmp);
1488 /* Implemented as a NOP. */
1493 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
1496 /* ??? This should be atomic. */
1503 dest = tcg_temp_new();
1504 SRC_EA(env, src1, OS_BYTE, 1, &addr);
1505 gen_logic_cc(s, src1);
1506 tcg_gen_ori_i32(dest, src1, 0x80);
1507 DEST_EA(env, insn, OS_BYTE, dest, &addr);
1517 /* The upper 32 bits of the product are discarded, so
1518 muls.l and mulu.l are functionally equivalent. */
1519 ext = cpu_lduw_code(env, s->pc);
1522 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
1525 reg = DREG(ext, 12);
1526 SRC_EA(env, src1, OS_LONG, 0, NULL);
1527 dest = tcg_temp_new();
1528 tcg_gen_mul_i32(dest, src1, reg);
1529 tcg_gen_mov_i32(reg, dest);
1530 /* Unlike m68k, coldfire always clears the overflow bit. */
1531 gen_logic_cc(s, dest);
1540 offset = cpu_ldsw_code(env, s->pc);
1542 reg = AREG(insn, 0);
1543 tmp = tcg_temp_new();
1544 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1545 gen_store(s, OS_LONG, tmp, reg);
1546 if ((insn & 7) != 7)
1547 tcg_gen_mov_i32(reg, tmp);
1548 tcg_gen_addi_i32(QREG_SP, tmp, offset);
1557 src = tcg_temp_new();
1558 reg = AREG(insn, 0);
1559 tcg_gen_mov_i32(src, reg);
1560 tmp = gen_load(s, OS_LONG, src, 0);
1561 tcg_gen_mov_i32(reg, tmp);
1562 tcg_gen_addi_i32(QREG_SP, src, 4);
1573 tmp = gen_load(s, OS_LONG, QREG_SP, 0);
1574 tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
1582 /* Load the target address first to ensure correct exception
1584 tmp = gen_lea(env, s, insn, OS_LONG);
1585 if (IS_NULL_QREG(tmp)) {
1589 if ((insn & 0x40) == 0) {
1591 gen_push(s, tcg_const_i32(s->pc));
1604 SRC_EA(env, src1, OS_LONG, 0, &addr);
1605 val = (insn >> 9) & 7;
1608 dest = tcg_temp_new();
1609 tcg_gen_mov_i32(dest, src1);
1610 if ((insn & 0x38) == 0x08) {
1611 /* Don't update condition codes if the destination is an
1612 address register. */
1613 if (insn & 0x0100) {
1614 tcg_gen_subi_i32(dest, dest, val);
1616 tcg_gen_addi_i32(dest, dest, val);
1619 src2 = tcg_const_i32(val);
1620 if (insn & 0x0100) {
1621 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1622 tcg_gen_subi_i32(dest, dest, val);
1623 s->cc_op = CC_OP_SUB;
1625 tcg_gen_addi_i32(dest, dest, val);
1626 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1627 s->cc_op = CC_OP_ADD;
1629 gen_update_cc_add(dest, src2);
1631 DEST_EA(env, insn, OS_LONG, dest, &addr);
1637 case 2: /* One extension word. */
1640 case 3: /* Two extension words. */
1643 case 4: /* No extension words. */
1646 disas_undef(env, s, insn);
1658 op = (insn >> 8) & 0xf;
1659 offset = (int8_t)insn;
1661 offset = cpu_ldsw_code(env, s->pc);
1663 } else if (offset == -1) {
1664 offset = read_im32(env, s);
1668 gen_push(s, tcg_const_i32(s->pc));
1673 l1 = gen_new_label();
1674 gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1);
1675 gen_jmp_tb(s, 1, base + offset);
1677 gen_jmp_tb(s, 0, s->pc);
1679 /* Unconditional branch. */
1680 gen_jmp_tb(s, 0, base + offset);
1689 tcg_gen_movi_i32(DREG(insn, 9), val);
1690 gen_logic_cc(s, tcg_const_i32(val));
1703 SRC_EA(env, src, opsize, (insn & 0x80) == 0, NULL);
1704 reg = DREG(insn, 9);
1705 tcg_gen_mov_i32(reg, src);
1706 gen_logic_cc(s, src);
1716 reg = DREG(insn, 9);
1717 dest = tcg_temp_new();
1719 SRC_EA(env, src, OS_LONG, 0, &addr);
1720 tcg_gen_or_i32(dest, src, reg);
1721 DEST_EA(env, insn, OS_LONG, dest, &addr);
1723 SRC_EA(env, src, OS_LONG, 0, NULL);
1724 tcg_gen_or_i32(dest, src, reg);
1725 tcg_gen_mov_i32(reg, dest);
1727 gen_logic_cc(s, dest);
1735 SRC_EA(env, src, OS_LONG, 0, NULL);
1736 reg = AREG(insn, 9);
1737 tcg_gen_sub_i32(reg, reg, src);
1746 reg = DREG(insn, 9);
1747 src = DREG(insn, 0);
1748 gen_helper_subx_cc(reg, cpu_env, reg, src);
1756 val = (insn >> 9) & 7;
1759 src = tcg_const_i32(val);
1760 gen_logic_cc(s, src);
1761 DEST_EA(env, insn, OS_LONG, src, NULL);
1772 op = (insn >> 6) & 3;
1776 s->cc_op = CC_OP_CMPB;
1780 s->cc_op = CC_OP_CMPW;
1784 s->cc_op = CC_OP_SUB;
1789 SRC_EA(env, src, opsize, 1, NULL);
1790 reg = DREG(insn, 9);
1791 dest = tcg_temp_new();
1792 tcg_gen_sub_i32(dest, reg, src);
1793 gen_update_cc_add(dest, src);
1808 SRC_EA(env, src, opsize, 1, NULL);
1809 reg = AREG(insn, 9);
1810 dest = tcg_temp_new();
1811 tcg_gen_sub_i32(dest, reg, src);
1812 gen_update_cc_add(dest, src);
1813 s->cc_op = CC_OP_SUB;
1823 SRC_EA(env, src, OS_LONG, 0, &addr);
1824 reg = DREG(insn, 9);
1825 dest = tcg_temp_new();
1826 tcg_gen_xor_i32(dest, src, reg);
1827 gen_logic_cc(s, dest);
1828 DEST_EA(env, insn, OS_LONG, dest, &addr);
1838 reg = DREG(insn, 9);
1839 dest = tcg_temp_new();
1841 SRC_EA(env, src, OS_LONG, 0, &addr);
1842 tcg_gen_and_i32(dest, src, reg);
1843 DEST_EA(env, insn, OS_LONG, dest, &addr);
1845 SRC_EA(env, src, OS_LONG, 0, NULL);
1846 tcg_gen_and_i32(dest, src, reg);
1847 tcg_gen_mov_i32(reg, dest);
1849 gen_logic_cc(s, dest);
1857 SRC_EA(env, src, OS_LONG, 0, NULL);
1858 reg = AREG(insn, 9);
1859 tcg_gen_add_i32(reg, reg, src);
1868 reg = DREG(insn, 9);
1869 src = DREG(insn, 0);
1870 gen_helper_addx_cc(reg, cpu_env, reg, src);
1871 s->cc_op = CC_OP_FLAGS;
1874 /* TODO: This could be implemented without helper functions. */
1875 DISAS_INSN(shift_im)
1881 reg = DREG(insn, 0);
1882 tmp = (insn >> 9) & 7;
1885 shift = tcg_const_i32(tmp);
1886 /* No need to flush flags becuse we know we will set C flag. */
1888 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1891 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1893 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1896 s->cc_op = CC_OP_SHIFT;
1899 DISAS_INSN(shift_reg)
1904 reg = DREG(insn, 0);
1905 shift = DREG(insn, 9);
1906 /* Shift by zero leaves C flag unmodified. */
1909 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1912 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1914 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1917 s->cc_op = CC_OP_SHIFT;
1923 reg = DREG(insn, 0);
1924 gen_logic_cc(s, reg);
1925 gen_helper_ff1(reg, reg);
1928 static TCGv gen_get_sr(DisasContext *s)
1933 ccr = gen_get_ccr(s);
1934 sr = tcg_temp_new();
1935 tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
1936 tcg_gen_or_i32(sr, sr, ccr);
1946 ext = cpu_lduw_code(env, s->pc);
1948 if (ext != 0x46FC) {
1949 gen_exception(s, addr, EXCP_UNSUPPORTED);
1952 ext = cpu_lduw_code(env, s->pc);
1954 if (IS_USER(s) || (ext & SR_S) == 0) {
1955 gen_exception(s, addr, EXCP_PRIVILEGE);
1958 gen_push(s, gen_get_sr(s));
1959 gen_set_sr_im(s, ext, 0);
1962 DISAS_INSN(move_from_sr)
1968 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1972 reg = DREG(insn, 0);
1973 gen_partset_reg(OS_WORD, reg, sr);
1976 DISAS_INSN(move_to_sr)
1979 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1982 gen_set_sr(env, s, insn, 0);
1986 DISAS_INSN(move_from_usp)
1989 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1992 tcg_gen_ld_i32(AREG(insn, 0), cpu_env,
1993 offsetof(CPUM68KState, sp[M68K_USP]));
1996 DISAS_INSN(move_to_usp)
1999 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2002 tcg_gen_st_i32(AREG(insn, 0), cpu_env,
2003 offsetof(CPUM68KState, sp[M68K_USP]));
2008 gen_exception(s, s->pc, EXCP_HALT_INSN);
2016 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2020 ext = cpu_lduw_code(env, s->pc);
2023 gen_set_sr_im(s, ext, 0);
2024 tcg_gen_movi_i32(cpu_halted, 1);
2025 gen_exception(s, s->pc, EXCP_HLT);
2031 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2034 gen_exception(s, s->pc - 2, EXCP_RTE);
2043 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2047 ext = cpu_lduw_code(env, s->pc);
2051 reg = AREG(ext, 12);
2053 reg = DREG(ext, 12);
2055 gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
2062 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2065 /* ICache fetch. Implement as no-op. */
2071 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2074 /* Cache push/invalidate. Implement as no-op. */
2079 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2084 M68kCPU *cpu = m68k_env_get_cpu(env);
2087 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2090 /* TODO: Implement wdebug. */
2091 cpu_abort(CPU(cpu), "WDEBUG not implemented");
2096 gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf));
2099 /* ??? FP exceptions are not implemented. Most exceptions are deferred until
2100 immediately before the next FP instruction is executed. */
2114 ext = cpu_lduw_code(env, s->pc);
2116 opmode = ext & 0x7f;
2117 switch ((ext >> 13) & 7) {
2122 case 3: /* fmove out */
2124 tmp32 = tcg_temp_new_i32();
2126 /* ??? TODO: Proper behavior on overflow. */
2127 switch ((ext >> 10) & 7) {
2130 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2134 gen_helper_f64_to_f32(tmp32, cpu_env, src);
2138 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2140 case 5: /* OS_DOUBLE */
2141 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2142 switch ((insn >> 3) & 7) {
2147 tcg_gen_addi_i32(tmp32, tmp32, -8);
2150 offset = cpu_ldsw_code(env, s->pc);
2152 tcg_gen_addi_i32(tmp32, tmp32, offset);
2157 gen_store64(s, tmp32, src);
2158 switch ((insn >> 3) & 7) {
2160 tcg_gen_addi_i32(tmp32, tmp32, 8);
2161 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2164 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2167 tcg_temp_free_i32(tmp32);
2171 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2176 DEST_EA(env, insn, opsize, tmp32, NULL);
2177 tcg_temp_free_i32(tmp32);
2179 case 4: /* fmove to control register. */
2180 switch ((ext >> 10) & 7) {
2182 /* Not implemented. Ignore writes. */
2187 cpu_abort(NULL, "Unimplemented: fmove to control %d",
2191 case 5: /* fmove from control register. */
2192 switch ((ext >> 10) & 7) {
2194 /* Not implemented. Always return zero. */
2195 tmp32 = tcg_const_i32(0);
2200 cpu_abort(NULL, "Unimplemented: fmove from control %d",
2204 DEST_EA(env, insn, OS_LONG, tmp32, NULL);
2206 case 6: /* fmovem */
2212 if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0)
2214 tmp32 = gen_lea(env, s, insn, OS_LONG);
2215 if (IS_NULL_QREG(tmp32)) {
2219 addr = tcg_temp_new_i32();
2220 tcg_gen_mov_i32(addr, tmp32);
2222 for (i = 0; i < 8; i++) {
2225 if (ext & (1 << 13)) {
2227 tcg_gen_qemu_stf64(dest, addr, IS_USER(s));
2230 tcg_gen_qemu_ldf64(dest, addr, IS_USER(s));
2232 if (ext & (mask - 1))
2233 tcg_gen_addi_i32(addr, addr, 8);
2237 tcg_temp_free_i32(addr);
2241 if (ext & (1 << 14)) {
2242 /* Source effective address. */
2243 switch ((ext >> 10) & 7) {
2244 case 0: opsize = OS_LONG; break;
2245 case 1: opsize = OS_SINGLE; break;
2246 case 4: opsize = OS_WORD; break;
2247 case 5: opsize = OS_DOUBLE; break;
2248 case 6: opsize = OS_BYTE; break;
2252 if (opsize == OS_DOUBLE) {
2253 tmp32 = tcg_temp_new_i32();
2254 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2255 switch ((insn >> 3) & 7) {
2260 tcg_gen_addi_i32(tmp32, tmp32, -8);
2263 offset = cpu_ldsw_code(env, s->pc);
2265 tcg_gen_addi_i32(tmp32, tmp32, offset);
2268 offset = cpu_ldsw_code(env, s->pc);
2269 offset += s->pc - 2;
2271 tcg_gen_addi_i32(tmp32, tmp32, offset);
2276 src = gen_load64(s, tmp32);
2277 switch ((insn >> 3) & 7) {
2279 tcg_gen_addi_i32(tmp32, tmp32, 8);
2280 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2283 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2286 tcg_temp_free_i32(tmp32);
2288 SRC_EA(env, tmp32, opsize, 1, NULL);
2289 src = tcg_temp_new_i64();
2294 gen_helper_i32_to_f64(src, cpu_env, tmp32);
2297 gen_helper_f32_to_f64(src, cpu_env, tmp32);
2302 /* Source register. */
2303 src = FREG(ext, 10);
2305 dest = FREG(ext, 7);
2306 res = tcg_temp_new_i64();
2308 tcg_gen_mov_f64(res, dest);
2312 case 0: case 0x40: case 0x44: /* fmove */
2313 tcg_gen_mov_f64(res, src);
2316 gen_helper_iround_f64(res, cpu_env, src);
2319 case 3: /* fintrz */
2320 gen_helper_itrunc_f64(res, cpu_env, src);
2323 case 4: case 0x41: case 0x45: /* fsqrt */
2324 gen_helper_sqrt_f64(res, cpu_env, src);
2326 case 0x18: case 0x58: case 0x5c: /* fabs */
2327 gen_helper_abs_f64(res, src);
2329 case 0x1a: case 0x5a: case 0x5e: /* fneg */
2330 gen_helper_chs_f64(res, src);
2332 case 0x20: case 0x60: case 0x64: /* fdiv */
2333 gen_helper_div_f64(res, cpu_env, res, src);
2335 case 0x22: case 0x62: case 0x66: /* fadd */
2336 gen_helper_add_f64(res, cpu_env, res, src);
2338 case 0x23: case 0x63: case 0x67: /* fmul */
2339 gen_helper_mul_f64(res, cpu_env, res, src);
2341 case 0x28: case 0x68: case 0x6c: /* fsub */
2342 gen_helper_sub_f64(res, cpu_env, res, src);
2344 case 0x38: /* fcmp */
2345 gen_helper_sub_cmp_f64(res, cpu_env, res, src);
2349 case 0x3a: /* ftst */
2350 tcg_gen_mov_f64(res, src);
2357 if (ext & (1 << 14)) {
2358 tcg_temp_free_i64(src);
2361 if (opmode & 0x40) {
2362 if ((opmode & 0x4) != 0)
2364 } else if ((s->fpcr & M68K_FPCR_PREC) == 0) {
2369 TCGv tmp = tcg_temp_new_i32();
2370 gen_helper_f64_to_f32(tmp, cpu_env, res);
2371 gen_helper_f32_to_f64(res, cpu_env, tmp);
2372 tcg_temp_free_i32(tmp);
2374 tcg_gen_mov_f64(QREG_FP_RESULT, res);
2376 tcg_gen_mov_f64(dest, res);
2378 tcg_temp_free_i64(res);
2381 /* FIXME: Is this right for offset addressing modes? */
2383 disas_undef_fpu(env, s, insn);
2394 offset = cpu_ldsw_code(env, s->pc);
2396 if (insn & (1 << 6)) {
2397 offset = (offset << 16) | cpu_lduw_code(env, s->pc);
2401 l1 = gen_new_label();
2402 /* TODO: Raise BSUN exception. */
2403 flag = tcg_temp_new();
2404 gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT);
2405 /* Jump to l1 if condition is true. */
2406 switch (insn & 0xf) {
2409 case 1: /* eq (=0) */
2410 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2412 case 2: /* ogt (=1) */
2413 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
2415 case 3: /* oge (=0 or =1) */
2416 tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
2418 case 4: /* olt (=-1) */
2419 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
2421 case 5: /* ole (=-1 or =0) */
2422 tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
2424 case 6: /* ogl (=-1 or =1) */
2425 tcg_gen_andi_i32(flag, flag, 1);
2426 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2428 case 7: /* or (=2) */
2429 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
2431 case 8: /* un (<2) */
2432 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
2434 case 9: /* ueq (=0 or =2) */
2435 tcg_gen_andi_i32(flag, flag, 1);
2436 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2438 case 10: /* ugt (>0) */
2439 tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
2441 case 11: /* uge (>=0) */
2442 tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
2444 case 12: /* ult (=-1 or =2) */
2445 tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
2447 case 13: /* ule (!=1) */
2448 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
2450 case 14: /* ne (!=0) */
2451 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2457 gen_jmp_tb(s, 0, s->pc);
2459 gen_jmp_tb(s, 1, addr + offset);
2462 DISAS_INSN(frestore)
2464 M68kCPU *cpu = m68k_env_get_cpu(env);
2466 /* TODO: Implement frestore. */
2467 cpu_abort(CPU(cpu), "FRESTORE not implemented");
2472 M68kCPU *cpu = m68k_env_get_cpu(env);
2474 /* TODO: Implement fsave. */
2475 cpu_abort(CPU(cpu), "FSAVE not implemented");
2478 static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper)
2480 TCGv tmp = tcg_temp_new();
2481 if (s->env->macsr & MACSR_FI) {
2483 tcg_gen_andi_i32(tmp, val, 0xffff0000);
2485 tcg_gen_shli_i32(tmp, val, 16);
2486 } else if (s->env->macsr & MACSR_SU) {
2488 tcg_gen_sari_i32(tmp, val, 16);
2490 tcg_gen_ext16s_i32(tmp, val);
2493 tcg_gen_shri_i32(tmp, val, 16);
2495 tcg_gen_ext16u_i32(tmp, val);
2500 static void gen_mac_clear_flags(void)
2502 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR,
2503 ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV));
2519 s->mactmp = tcg_temp_new_i64();
2523 ext = cpu_lduw_code(env, s->pc);
2526 acc = ((insn >> 7) & 1) | ((ext >> 3) & 2);
2527 dual = ((insn & 0x30) != 0 && (ext & 3) != 0);
2528 if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
2529 disas_undef(env, s, insn);
2533 /* MAC with load. */
2534 tmp = gen_lea(env, s, insn, OS_LONG);
2535 addr = tcg_temp_new();
2536 tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK);
2537 /* Load the value now to ensure correct exception behavior.
2538 Perform writeback after reading the MAC inputs. */
2539 loadval = gen_load(s, OS_LONG, addr, 0);
2542 rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12);
2543 ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0);
2545 loadval = addr = NULL_QREG;
2546 rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2547 ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2550 gen_mac_clear_flags();
2553 /* Disabled because conditional branches clobber temporary vars. */
2554 if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
2555 /* Skip the multiply if we know we will ignore it. */
2556 l1 = gen_new_label();
2557 tmp = tcg_temp_new();
2558 tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
2559 gen_op_jmp_nz32(tmp, l1);
2563 if ((ext & 0x0800) == 0) {
2565 rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0);
2566 ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0);
2568 if (s->env->macsr & MACSR_FI) {
2569 gen_helper_macmulf(s->mactmp, cpu_env, rx, ry);
2571 if (s->env->macsr & MACSR_SU)
2572 gen_helper_macmuls(s->mactmp, cpu_env, rx, ry);
2574 gen_helper_macmulu(s->mactmp, cpu_env, rx, ry);
2575 switch ((ext >> 9) & 3) {
2577 tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
2580 tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
2586 /* Save the overflow flag from the multiply. */
2587 saved_flags = tcg_temp_new();
2588 tcg_gen_mov_i32(saved_flags, QREG_MACSR);
2590 saved_flags = NULL_QREG;
2594 /* Disabled because conditional branches clobber temporary vars. */
2595 if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
2596 /* Skip the accumulate if the value is already saturated. */
2597 l1 = gen_new_label();
2598 tmp = tcg_temp_new();
2599 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2600 gen_op_jmp_nz32(tmp, l1);
2605 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2607 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2609 if (s->env->macsr & MACSR_FI)
2610 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2611 else if (s->env->macsr & MACSR_SU)
2612 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2614 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2617 /* Disabled because conditional branches clobber temporary vars. */
2623 /* Dual accumulate variant. */
2624 acc = (ext >> 2) & 3;
2625 /* Restore the overflow flag from the multiplier. */
2626 tcg_gen_mov_i32(QREG_MACSR, saved_flags);
2628 /* Disabled because conditional branches clobber temporary vars. */
2629 if ((s->env->macsr & MACSR_OMC) != 0) {
2630 /* Skip the accumulate if the value is already saturated. */
2631 l1 = gen_new_label();
2632 tmp = tcg_temp_new();
2633 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2634 gen_op_jmp_nz32(tmp, l1);
2638 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2640 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2641 if (s->env->macsr & MACSR_FI)
2642 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2643 else if (s->env->macsr & MACSR_SU)
2644 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2646 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2648 /* Disabled because conditional branches clobber temporary vars. */
2653 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc));
2657 rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2658 tcg_gen_mov_i32(rw, loadval);
2659 /* FIXME: Should address writeback happen with the masked or
2661 switch ((insn >> 3) & 7) {
2662 case 3: /* Post-increment. */
2663 tcg_gen_addi_i32(AREG(insn, 0), addr, 4);
2665 case 4: /* Pre-decrement. */
2666 tcg_gen_mov_i32(AREG(insn, 0), addr);
2671 DISAS_INSN(from_mac)
2677 rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2678 accnum = (insn >> 9) & 3;
2679 acc = MACREG(accnum);
2680 if (s->env->macsr & MACSR_FI) {
2681 gen_helper_get_macf(rx, cpu_env, acc);
2682 } else if ((s->env->macsr & MACSR_OMC) == 0) {
2683 tcg_gen_extrl_i64_i32(rx, acc);
2684 } else if (s->env->macsr & MACSR_SU) {
2685 gen_helper_get_macs(rx, acc);
2687 gen_helper_get_macu(rx, acc);
2690 tcg_gen_movi_i64(acc, 0);
2691 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2695 DISAS_INSN(move_mac)
2697 /* FIXME: This can be done without a helper. */
2701 dest = tcg_const_i32((insn >> 9) & 3);
2702 gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src));
2703 gen_mac_clear_flags();
2704 gen_helper_mac_set_flags(cpu_env, dest);
2707 DISAS_INSN(from_macsr)
2711 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2712 tcg_gen_mov_i32(reg, QREG_MACSR);
2715 DISAS_INSN(from_mask)
2718 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2719 tcg_gen_mov_i32(reg, QREG_MAC_MASK);
2722 DISAS_INSN(from_mext)
2726 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2727 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2728 if (s->env->macsr & MACSR_FI)
2729 gen_helper_get_mac_extf(reg, cpu_env, acc);
2731 gen_helper_get_mac_exti(reg, cpu_env, acc);
2734 DISAS_INSN(macsr_to_ccr)
2736 tcg_gen_movi_i32(QREG_CC_X, 0);
2737 tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
2738 s->cc_op = CC_OP_FLAGS;
2746 accnum = (insn >> 9) & 3;
2747 acc = MACREG(accnum);
2748 SRC_EA(env, val, OS_LONG, 0, NULL);
2749 if (s->env->macsr & MACSR_FI) {
2750 tcg_gen_ext_i32_i64(acc, val);
2751 tcg_gen_shli_i64(acc, acc, 8);
2752 } else if (s->env->macsr & MACSR_SU) {
2753 tcg_gen_ext_i32_i64(acc, val);
2755 tcg_gen_extu_i32_i64(acc, val);
2757 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2758 gen_mac_clear_flags();
2759 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum));
2762 DISAS_INSN(to_macsr)
2765 SRC_EA(env, val, OS_LONG, 0, NULL);
2766 gen_helper_set_macsr(cpu_env, val);
2773 SRC_EA(env, val, OS_LONG, 0, NULL);
2774 tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
2781 SRC_EA(env, val, OS_LONG, 0, NULL);
2782 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2783 if (s->env->macsr & MACSR_FI)
2784 gen_helper_set_mac_extf(cpu_env, val, acc);
2785 else if (s->env->macsr & MACSR_SU)
2786 gen_helper_set_mac_exts(cpu_env, val, acc);
2788 gen_helper_set_mac_extu(cpu_env, val, acc);
2791 static disas_proc opcode_table[65536];
2794 register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask)
2800 /* Sanity check. All set bits must be included in the mask. */
2801 if (opcode & ~mask) {
2803 "qemu internal error: bogus opcode definition %04x/%04x\n",
2807 /* This could probably be cleverer. For now just optimize the case where
2808 the top bits are known. */
2809 /* Find the first zero bit in the mask. */
2811 while ((i & mask) != 0)
2813 /* Iterate over all combinations of this and lower bits. */
2818 from = opcode & ~(i - 1);
2820 for (i = from; i < to; i++) {
2821 if ((i & mask) == opcode)
2822 opcode_table[i] = proc;
2826 /* Register m68k opcode handlers. Order is important.
2827 Later insn override earlier ones. */
2828 void register_m68k_insns (CPUM68KState *env)
2830 #define INSN(name, opcode, mask, feature) do { \
2831 if (m68k_feature(env, M68K_FEATURE_##feature)) \
2832 register_opcode(disas_##name, 0x##opcode, 0x##mask); \
2834 INSN(undef, 0000, 0000, CF_ISA_A);
2835 INSN(arith_im, 0080, fff8, CF_ISA_A);
2836 INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
2837 INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
2838 INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
2839 INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
2840 INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
2841 INSN(arith_im, 0280, fff8, CF_ISA_A);
2842 INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
2843 INSN(arith_im, 0480, fff8, CF_ISA_A);
2844 INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
2845 INSN(arith_im, 0680, fff8, CF_ISA_A);
2846 INSN(bitop_im, 0800, ffc0, CF_ISA_A);
2847 INSN(bitop_im, 0840, ffc0, CF_ISA_A);
2848 INSN(bitop_im, 0880, ffc0, CF_ISA_A);
2849 INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
2850 INSN(arith_im, 0a80, fff8, CF_ISA_A);
2851 INSN(arith_im, 0c00, ff38, CF_ISA_A);
2852 INSN(move, 1000, f000, CF_ISA_A);
2853 INSN(move, 2000, f000, CF_ISA_A);
2854 INSN(move, 3000, f000, CF_ISA_A);
2855 INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC);
2856 INSN(negx, 4080, fff8, CF_ISA_A);
2857 INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
2858 INSN(lea, 41c0, f1c0, CF_ISA_A);
2859 INSN(clr, 4200, ff00, CF_ISA_A);
2860 INSN(undef, 42c0, ffc0, CF_ISA_A);
2861 INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
2862 INSN(neg, 4480, fff8, CF_ISA_A);
2863 INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
2864 INSN(not, 4680, fff8, CF_ISA_A);
2865 INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
2866 INSN(pea, 4840, ffc0, CF_ISA_A);
2867 INSN(swap, 4840, fff8, CF_ISA_A);
2868 INSN(movem, 48c0, fbc0, CF_ISA_A);
2869 INSN(ext, 4880, fff8, CF_ISA_A);
2870 INSN(ext, 48c0, fff8, CF_ISA_A);
2871 INSN(ext, 49c0, fff8, CF_ISA_A);
2872 INSN(tst, 4a00, ff00, CF_ISA_A);
2873 INSN(tas, 4ac0, ffc0, CF_ISA_B);
2874 INSN(halt, 4ac8, ffff, CF_ISA_A);
2875 INSN(pulse, 4acc, ffff, CF_ISA_A);
2876 INSN(illegal, 4afc, ffff, CF_ISA_A);
2877 INSN(mull, 4c00, ffc0, CF_ISA_A);
2878 INSN(divl, 4c40, ffc0, CF_ISA_A);
2879 INSN(sats, 4c80, fff8, CF_ISA_B);
2880 INSN(trap, 4e40, fff0, CF_ISA_A);
2881 INSN(link, 4e50, fff8, CF_ISA_A);
2882 INSN(unlk, 4e58, fff8, CF_ISA_A);
2883 INSN(move_to_usp, 4e60, fff8, USP);
2884 INSN(move_from_usp, 4e68, fff8, USP);
2885 INSN(nop, 4e71, ffff, CF_ISA_A);
2886 INSN(stop, 4e72, ffff, CF_ISA_A);
2887 INSN(rte, 4e73, ffff, CF_ISA_A);
2888 INSN(rts, 4e75, ffff, CF_ISA_A);
2889 INSN(movec, 4e7b, ffff, CF_ISA_A);
2890 INSN(jump, 4e80, ffc0, CF_ISA_A);
2891 INSN(jump, 4ec0, ffc0, CF_ISA_A);
2892 INSN(addsubq, 5180, f1c0, CF_ISA_A);
2893 INSN(scc, 50c0, f0f8, CF_ISA_A);
2894 INSN(addsubq, 5080, f1c0, CF_ISA_A);
2895 INSN(tpf, 51f8, fff8, CF_ISA_A);
2897 /* Branch instructions. */
2898 INSN(branch, 6000, f000, CF_ISA_A);
2899 /* Disable long branch instructions, then add back the ones we want. */
2900 INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */
2901 INSN(branch, 60ff, f0ff, CF_ISA_B);
2902 INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */
2903 INSN(branch, 60ff, ffff, BRAL);
2905 INSN(moveq, 7000, f100, CF_ISA_A);
2906 INSN(mvzs, 7100, f100, CF_ISA_B);
2907 INSN(or, 8000, f000, CF_ISA_A);
2908 INSN(divw, 80c0, f0c0, CF_ISA_A);
2909 INSN(addsub, 9000, f000, CF_ISA_A);
2910 INSN(subx, 9180, f1f8, CF_ISA_A);
2911 INSN(suba, 91c0, f1c0, CF_ISA_A);
2913 INSN(undef_mac, a000, f000, CF_ISA_A);
2914 INSN(mac, a000, f100, CF_EMAC);
2915 INSN(from_mac, a180, f9b0, CF_EMAC);
2916 INSN(move_mac, a110, f9fc, CF_EMAC);
2917 INSN(from_macsr,a980, f9f0, CF_EMAC);
2918 INSN(from_mask, ad80, fff0, CF_EMAC);
2919 INSN(from_mext, ab80, fbf0, CF_EMAC);
2920 INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC);
2921 INSN(to_mac, a100, f9c0, CF_EMAC);
2922 INSN(to_macsr, a900, ffc0, CF_EMAC);
2923 INSN(to_mext, ab00, fbc0, CF_EMAC);
2924 INSN(to_mask, ad00, ffc0, CF_EMAC);
2926 INSN(mov3q, a140, f1c0, CF_ISA_B);
2927 INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
2928 INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
2929 INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
2930 INSN(cmp, b080, f1c0, CF_ISA_A);
2931 INSN(cmpa, b1c0, f1c0, CF_ISA_A);
2932 INSN(eor, b180, f1c0, CF_ISA_A);
2933 INSN(and, c000, f000, CF_ISA_A);
2934 INSN(mulw, c0c0, f0c0, CF_ISA_A);
2935 INSN(addsub, d000, f000, CF_ISA_A);
2936 INSN(addx, d180, f1f8, CF_ISA_A);
2937 INSN(adda, d1c0, f1c0, CF_ISA_A);
2938 INSN(shift_im, e080, f0f0, CF_ISA_A);
2939 INSN(shift_reg, e0a0, f0f0, CF_ISA_A);
2940 INSN(undef_fpu, f000, f000, CF_ISA_A);
2941 INSN(fpu, f200, ffc0, CF_FPU);
2942 INSN(fbcc, f280, ffc0, CF_FPU);
2943 INSN(frestore, f340, ffc0, CF_FPU);
2944 INSN(fsave, f340, ffc0, CF_FPU);
2945 INSN(intouch, f340, ffc0, CF_ISA_A);
2946 INSN(cpushl, f428, ff38, CF_ISA_A);
2947 INSN(wddata, fb00, ff00, CF_ISA_A);
2948 INSN(wdebug, fbc0, ffc0, CF_ISA_A);
2952 /* ??? Some of this implementation is not exception safe. We should always
2953 write back the result to memory before setting the condition codes. */
2954 static void disas_m68k_insn(CPUM68KState * env, DisasContext *s)
2958 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
2959 tcg_gen_insn_start(s->pc);
2962 insn = cpu_lduw_code(env, s->pc);
2965 opcode_table[insn](env, s, insn);
2968 /* generate intermediate code for basic block 'tb'. */
2970 gen_intermediate_code_internal(M68kCPU *cpu, TranslationBlock *tb,
2973 CPUState *cs = CPU(cpu);
2974 CPUM68KState *env = &cpu->env;
2975 DisasContext dc1, *dc = &dc1;
2978 target_ulong pc_start;
2983 /* generate intermediate code */
2989 dc->is_jmp = DISAS_NEXT;
2991 dc->cc_op = CC_OP_DYNAMIC;
2992 dc->singlestep_enabled = cs->singlestep_enabled;
2993 dc->fpcr = env->fpcr;
2994 dc->user = (env->sr & SR_S) == 0;
2998 max_insns = tb->cflags & CF_COUNT_MASK;
3000 max_insns = CF_COUNT_MASK;
3004 pc_offset = dc->pc - pc_start;
3005 gen_throws_exception = NULL;
3006 if (unlikely(!QTAILQ_EMPTY(&cs->breakpoints))) {
3007 QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
3008 if (bp->pc == dc->pc) {
3009 gen_exception(dc, dc->pc, EXCP_DEBUG);
3010 dc->is_jmp = DISAS_JUMP;
3018 j = tcg_op_buf_count();
3022 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3024 tcg_ctx.gen_opc_pc[lj] = dc->pc;
3025 tcg_ctx.gen_opc_instr_start[lj] = 1;
3026 tcg_ctx.gen_opc_icount[lj] = num_insns;
3028 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
3030 dc->insn_pc = dc->pc;
3031 disas_m68k_insn(env, dc);
3033 } while (!dc->is_jmp && !tcg_op_buf_full() &&
3034 !cs->singlestep_enabled &&
3036 (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
3037 num_insns < max_insns);
3039 if (tb->cflags & CF_LAST_IO)
3041 if (unlikely(cs->singlestep_enabled)) {
3042 /* Make sure the pc is updated, and raise a debug exception. */
3044 gen_flush_cc_op(dc);
3045 tcg_gen_movi_i32(QREG_PC, dc->pc);
3047 gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG));
3049 switch(dc->is_jmp) {
3051 gen_flush_cc_op(dc);
3052 gen_jmp_tb(dc, 0, dc->pc);
3057 gen_flush_cc_op(dc);
3058 /* indicate that the hash table must be used to find the next TB */
3062 /* nothing more to generate */
3066 gen_tb_end(tb, num_insns);
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(cs, pc_start, dc->pc - pc_start, 0);
3077 j = tcg_op_buf_count();
3080 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3082 tb->size = dc->pc - pc_start;
3083 tb->icount = num_insns;
3087 //expand_target_qops();
3090 void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb)
3092 gen_intermediate_code_internal(m68k_env_get_cpu(env), tb, false);
3095 void gen_intermediate_code_pc(CPUM68KState *env, TranslationBlock *tb)
3097 gen_intermediate_code_internal(m68k_env_get_cpu(env), tb, true);
3100 void m68k_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3103 M68kCPU *cpu = M68K_CPU(cs);
3104 CPUM68KState *env = &cpu->env;
3108 for (i = 0; i < 8; i++)
3110 u.d = env->fregs[i];
3111 cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
3112 i, env->dregs[i], i, env->aregs[i],
3113 i, u.l.upper, u.l.lower, *(double *)&u.d);
3115 cpu_fprintf (f, "PC = %08x ", env->pc);
3117 cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-',
3118 (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-',
3119 (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-');
3120 cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result);
3123 void restore_state_to_opc(CPUM68KState *env, TranslationBlock *tb, int pc_pos)
3125 env->pc = tcg_ctx.gen_opc_pc[pc_pos];