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");
113 static inline void qemu_assert(int cond, const char *msg)
116 fprintf (stderr, "badness: %s\n", msg);
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;
137 #define DISAS_JUMP_NEXT 4
139 #if defined(CONFIG_USER_ONLY)
142 #define IS_USER(s) s->user
145 /* XXX: move that elsewhere */
146 /* ??? Fix exceptions. */
147 static void *gen_throws_exception;
148 #define gen_last_qop NULL
156 typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn);
158 #ifdef DEBUG_DISPATCH
159 #define DISAS_INSN(name) \
160 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
162 static void disas_##name(CPUM68KState *env, DisasContext *s, \
165 qemu_log("Dispatch " #name "\n"); \
166 real_disas_##name(s, env, insn); \
168 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
171 #define DISAS_INSN(name) \
172 static void disas_##name(CPUM68KState *env, DisasContext *s, \
176 /* Generate a load from the specified address. Narrow values are
177 sign extended to full register width. */
178 static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign)
181 int index = IS_USER(s);
183 tmp = tcg_temp_new_i32();
187 tcg_gen_qemu_ld8s(tmp, addr, index);
189 tcg_gen_qemu_ld8u(tmp, addr, index);
193 tcg_gen_qemu_ld16s(tmp, addr, index);
195 tcg_gen_qemu_ld16u(tmp, addr, index);
199 tcg_gen_qemu_ld32u(tmp, addr, index);
202 qemu_assert(0, "bad load size");
204 gen_throws_exception = gen_last_qop;
208 static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr)
211 int index = IS_USER(s);
213 tmp = tcg_temp_new_i64();
214 tcg_gen_qemu_ldf64(tmp, addr, index);
215 gen_throws_exception = gen_last_qop;
219 /* Generate a store. */
220 static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val)
222 int index = IS_USER(s);
226 tcg_gen_qemu_st8(val, addr, index);
229 tcg_gen_qemu_st16(val, addr, index);
233 tcg_gen_qemu_st32(val, addr, index);
236 qemu_assert(0, "bad store size");
238 gen_throws_exception = gen_last_qop;
241 static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val)
243 int index = IS_USER(s);
245 tcg_gen_qemu_stf64(val, addr, index);
246 gen_throws_exception = gen_last_qop;
255 /* Generate an unsigned load if VAL is 0 a signed load if val is -1,
256 otherwise generate a store. */
257 static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val,
260 if (what == EA_STORE) {
261 gen_store(s, opsize, addr, val);
264 return gen_load(s, opsize, addr, what == EA_LOADS);
268 /* Read a 32-bit immediate constant. */
269 static inline uint32_t read_im32(CPUM68KState *env, DisasContext *s)
272 im = ((uint32_t)cpu_lduw_code(env, s->pc)) << 16;
274 im |= cpu_lduw_code(env, s->pc);
279 /* Calculate and address index. */
280 static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
285 add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12);
286 if ((ext & 0x800) == 0) {
287 tcg_gen_ext16s_i32(tmp, add);
290 scale = (ext >> 9) & 3;
292 tcg_gen_shli_i32(tmp, add, scale);
298 /* Handle a base + index + displacement effective addresss.
299 A NULL_QREG base means pc-relative. */
300 static TCGv gen_lea_indexed(CPUM68KState *env, DisasContext *s, int opsize,
310 ext = cpu_lduw_code(env, s->pc);
313 if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX))
317 /* full extension word format */
318 if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
321 if ((ext & 0x30) > 0x10) {
322 /* base displacement */
323 if ((ext & 0x30) == 0x20) {
324 bd = (int16_t)cpu_lduw_code(env, s->pc);
327 bd = read_im32(env, s);
332 tmp = tcg_temp_new();
333 if ((ext & 0x44) == 0) {
335 add = gen_addr_index(ext, tmp);
339 if ((ext & 0x80) == 0) {
340 /* base not suppressed */
341 if (IS_NULL_QREG(base)) {
342 base = tcg_const_i32(offset + bd);
345 if (!IS_NULL_QREG(add)) {
346 tcg_gen_add_i32(tmp, add, base);
352 if (!IS_NULL_QREG(add)) {
354 tcg_gen_addi_i32(tmp, add, bd);
358 add = tcg_const_i32(bd);
360 if ((ext & 3) != 0) {
361 /* memory indirect */
362 base = gen_load(s, OS_LONG, add, 0);
363 if ((ext & 0x44) == 4) {
364 add = gen_addr_index(ext, tmp);
365 tcg_gen_add_i32(tmp, add, base);
371 /* outer displacement */
372 if ((ext & 3) == 2) {
373 od = (int16_t)cpu_lduw_code(env, s->pc);
376 od = read_im32(env, s);
382 tcg_gen_addi_i32(tmp, add, od);
387 /* brief extension word format */
388 tmp = tcg_temp_new();
389 add = gen_addr_index(ext, tmp);
390 if (!IS_NULL_QREG(base)) {
391 tcg_gen_add_i32(tmp, add, base);
393 tcg_gen_addi_i32(tmp, tmp, (int8_t)ext);
395 tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext);
402 /* Update the CPU env CC_OP state. */
403 static inline void gen_flush_cc_op(DisasContext *s)
405 if (s->cc_op != CC_OP_DYNAMIC)
406 tcg_gen_movi_i32(QREG_CC_OP, s->cc_op);
409 /* Evaluate all the CC flags. */
410 static inline void gen_flush_flags(DisasContext *s)
412 if (s->cc_op == CC_OP_FLAGS)
415 gen_helper_flush_flags(cpu_env, QREG_CC_OP);
416 s->cc_op = CC_OP_FLAGS;
419 static void gen_logic_cc(DisasContext *s, TCGv val)
421 tcg_gen_mov_i32(QREG_CC_DEST, val);
422 s->cc_op = CC_OP_LOGIC;
425 static void gen_update_cc_add(TCGv dest, TCGv src)
427 tcg_gen_mov_i32(QREG_CC_DEST, dest);
428 tcg_gen_mov_i32(QREG_CC_SRC, src);
431 static inline int opsize_bytes(int opsize)
434 case OS_BYTE: return 1;
435 case OS_WORD: return 2;
436 case OS_LONG: return 4;
437 case OS_SINGLE: return 4;
438 case OS_DOUBLE: return 8;
440 qemu_assert(0, "bad operand size");
445 /* Assign value to a register. If the width is less than the register width
446 only the low part of the register is set. */
447 static void gen_partset_reg(int opsize, TCGv reg, TCGv val)
452 tcg_gen_andi_i32(reg, reg, 0xffffff00);
453 tmp = tcg_temp_new();
454 tcg_gen_ext8u_i32(tmp, val);
455 tcg_gen_or_i32(reg, reg, tmp);
458 tcg_gen_andi_i32(reg, reg, 0xffff0000);
459 tmp = tcg_temp_new();
460 tcg_gen_ext16u_i32(tmp, val);
461 tcg_gen_or_i32(reg, reg, tmp);
465 tcg_gen_mov_i32(reg, val);
468 qemu_assert(0, "Bad operand size");
473 /* Sign or zero extend a value. */
474 static inline TCGv gen_extend(TCGv val, int opsize, int sign)
480 tmp = tcg_temp_new();
482 tcg_gen_ext8s_i32(tmp, val);
484 tcg_gen_ext8u_i32(tmp, val);
487 tmp = tcg_temp_new();
489 tcg_gen_ext16s_i32(tmp, val);
491 tcg_gen_ext16u_i32(tmp, val);
498 qemu_assert(0, "Bad operand size");
503 /* Generate code for an "effective address". Does not adjust the base
504 register for autoincrement addressing modes. */
505 static TCGv gen_lea(CPUM68KState *env, DisasContext *s, uint16_t insn,
513 switch ((insn >> 3) & 7) {
514 case 0: /* Data register direct. */
515 case 1: /* Address register direct. */
517 case 2: /* Indirect register */
518 case 3: /* Indirect postincrement. */
519 return AREG(insn, 0);
520 case 4: /* Indirect predecrememnt. */
522 tmp = tcg_temp_new();
523 tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
525 case 5: /* Indirect displacement. */
527 tmp = tcg_temp_new();
528 ext = cpu_lduw_code(env, s->pc);
530 tcg_gen_addi_i32(tmp, reg, (int16_t)ext);
532 case 6: /* Indirect index + displacement. */
534 return gen_lea_indexed(env, s, opsize, reg);
537 case 0: /* Absolute short. */
538 offset = cpu_ldsw_code(env, s->pc);
540 return tcg_const_i32(offset);
541 case 1: /* Absolute long. */
542 offset = read_im32(env, s);
543 return tcg_const_i32(offset);
544 case 2: /* pc displacement */
546 offset += cpu_ldsw_code(env, s->pc);
548 return tcg_const_i32(offset);
549 case 3: /* pc index+displacement. */
550 return gen_lea_indexed(env, s, opsize, NULL_QREG);
551 case 4: /* Immediate. */
556 /* Should never happen. */
560 /* Helper function for gen_ea. Reuse the computed address between the
561 for read/write operands. */
562 static inline TCGv gen_ea_once(CPUM68KState *env, DisasContext *s,
563 uint16_t insn, int opsize, TCGv val,
564 TCGv *addrp, ea_what what)
568 if (addrp && what == EA_STORE) {
571 tmp = gen_lea(env, s, insn, opsize);
572 if (IS_NULL_QREG(tmp))
577 return gen_ldst(s, opsize, tmp, val, what);
580 /* Generate code to load/store a value from/into an EA. If VAL > 0 this is
581 a write otherwise it is a read (0 == sign extend, -1 == zero extend).
582 ADDRP is non-null for readwrite operands. */
583 static TCGv gen_ea(CPUM68KState *env, DisasContext *s, uint16_t insn,
584 int opsize, TCGv val, TCGv *addrp, ea_what what)
590 switch ((insn >> 3) & 7) {
591 case 0: /* Data register direct. */
593 if (what == EA_STORE) {
594 gen_partset_reg(opsize, reg, val);
597 return gen_extend(reg, opsize, what == EA_LOADS);
599 case 1: /* Address register direct. */
601 if (what == EA_STORE) {
602 tcg_gen_mov_i32(reg, val);
605 return gen_extend(reg, opsize, what == EA_LOADS);
607 case 2: /* Indirect register */
609 return gen_ldst(s, opsize, reg, val, what);
610 case 3: /* Indirect postincrement. */
612 result = gen_ldst(s, opsize, reg, val, what);
613 /* ??? This is not exception safe. The instruction may still
614 fault after this point. */
615 if (what == EA_STORE || !addrp)
616 tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize));
618 case 4: /* Indirect predecrememnt. */
621 if (addrp && what == EA_STORE) {
624 tmp = gen_lea(env, s, insn, opsize);
625 if (IS_NULL_QREG(tmp))
630 result = gen_ldst(s, opsize, tmp, val, what);
631 /* ??? This is not exception safe. The instruction may still
632 fault after this point. */
633 if (what == EA_STORE || !addrp) {
635 tcg_gen_mov_i32(reg, tmp);
639 case 5: /* Indirect displacement. */
640 case 6: /* Indirect index + displacement. */
641 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
644 case 0: /* Absolute short. */
645 case 1: /* Absolute long. */
646 case 2: /* pc displacement */
647 case 3: /* pc index+displacement. */
648 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
649 case 4: /* Immediate. */
650 /* Sign extend values for consistency. */
653 if (what == EA_LOADS) {
654 offset = cpu_ldsb_code(env, s->pc + 1);
656 offset = cpu_ldub_code(env, s->pc + 1);
661 if (what == EA_LOADS) {
662 offset = cpu_ldsw_code(env, s->pc);
664 offset = cpu_lduw_code(env, s->pc);
669 offset = read_im32(env, s);
672 qemu_assert(0, "Bad immediate operand");
674 return tcg_const_i32(offset);
679 /* Should never happen. */
683 /* This generates a conditional branch, clobbering all temporaries. */
684 static void gen_jmpcc(DisasContext *s, int cond, int l1)
688 /* TODO: Optimize compare/branch pairs rather than always flushing
689 flag state to CC_OP_FLAGS. */
697 case 2: /* HI (!C && !Z) */
698 tmp = tcg_temp_new();
699 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
700 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
702 case 3: /* LS (C || Z) */
703 tmp = tcg_temp_new();
704 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
705 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
707 case 4: /* CC (!C) */
708 tmp = tcg_temp_new();
709 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
710 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
713 tmp = tcg_temp_new();
714 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
715 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
717 case 6: /* NE (!Z) */
718 tmp = tcg_temp_new();
719 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
720 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
723 tmp = tcg_temp_new();
724 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
725 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
727 case 8: /* VC (!V) */
728 tmp = tcg_temp_new();
729 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
730 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
733 tmp = tcg_temp_new();
734 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
735 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
737 case 10: /* PL (!N) */
738 tmp = tcg_temp_new();
739 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
740 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
742 case 11: /* MI (N) */
743 tmp = tcg_temp_new();
744 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
745 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
747 case 12: /* GE (!(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_EQ, tmp, 0, l1);
755 case 13: /* LT (N ^ V) */
756 tmp = tcg_temp_new();
757 assert(CCF_V == (CCF_N >> 2));
758 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
759 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
760 tcg_gen_andi_i32(tmp, tmp, CCF_V);
761 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
763 case 14: /* GT (!(Z || (N ^ V))) */
764 tmp = tcg_temp_new();
765 assert(CCF_V == (CCF_N >> 2));
766 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
767 tcg_gen_shri_i32(tmp, tmp, 2);
768 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
769 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
770 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
772 case 15: /* LE (Z || (N ^ V)) */
773 tmp = tcg_temp_new();
774 assert(CCF_V == (CCF_N >> 2));
775 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
776 tcg_gen_shri_i32(tmp, tmp, 2);
777 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
778 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
779 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
782 /* Should ever happen. */
793 l1 = gen_new_label();
794 cond = (insn >> 8) & 0xf;
796 tcg_gen_andi_i32(reg, reg, 0xffffff00);
797 /* This is safe because we modify the reg directly, with no other values
799 gen_jmpcc(s, cond ^ 1, l1);
800 tcg_gen_ori_i32(reg, reg, 0xff);
804 /* Force a TB lookup after an instruction that changes the CPU state. */
805 static void gen_lookup_tb(DisasContext *s)
808 tcg_gen_movi_i32(QREG_PC, s->pc);
809 s->is_jmp = DISAS_UPDATE;
812 /* Generate a jump to an immediate address. */
813 static void gen_jmp_im(DisasContext *s, uint32_t dest)
816 tcg_gen_movi_i32(QREG_PC, dest);
817 s->is_jmp = DISAS_JUMP;
820 /* Generate a jump to the address in qreg DEST. */
821 static void gen_jmp(DisasContext *s, TCGv dest)
824 tcg_gen_mov_i32(QREG_PC, dest);
825 s->is_jmp = DISAS_JUMP;
828 static void gen_exception(DisasContext *s, uint32_t where, int nr)
831 gen_jmp_im(s, where);
832 gen_helper_raise_exception(cpu_env, tcg_const_i32(nr));
835 static inline void gen_addr_fault(DisasContext *s)
837 gen_exception(s, s->insn_pc, EXCP_ADDRESS);
840 #define SRC_EA(env, result, opsize, op_sign, addrp) do { \
841 result = gen_ea(env, s, insn, opsize, NULL_QREG, addrp, \
842 op_sign ? EA_LOADS : EA_LOADU); \
843 if (IS_NULL_QREG(result)) { \
849 #define DEST_EA(env, insn, opsize, val, addrp) do { \
850 TCGv ea_result = gen_ea(env, s, insn, opsize, val, addrp, EA_STORE); \
851 if (IS_NULL_QREG(ea_result)) { \
857 /* Generate a jump to an immediate address. */
858 static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest)
860 TranslationBlock *tb;
863 if (unlikely(s->singlestep_enabled)) {
864 gen_exception(s, dest, EXCP_DEBUG);
865 } else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) ||
866 (s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
868 tcg_gen_movi_i32(QREG_PC, dest);
869 tcg_gen_exit_tb((uintptr_t)tb + n);
874 s->is_jmp = DISAS_TB_JUMP;
877 DISAS_INSN(undef_mac)
879 gen_exception(s, s->pc - 2, EXCP_LINEA);
882 DISAS_INSN(undef_fpu)
884 gen_exception(s, s->pc - 2, EXCP_LINEF);
889 gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
890 cpu_abort(env, "Illegal instruction: %04x @ %08x", insn, s->pc - 2);
900 sign = (insn & 0x100) != 0;
902 tmp = tcg_temp_new();
904 tcg_gen_ext16s_i32(tmp, reg);
906 tcg_gen_ext16u_i32(tmp, reg);
907 SRC_EA(env, src, OS_WORD, sign, NULL);
908 tcg_gen_mul_i32(tmp, tmp, src);
909 tcg_gen_mov_i32(reg, tmp);
910 /* Unlike m68k, coldfire always clears the overflow bit. */
911 gen_logic_cc(s, tmp);
921 sign = (insn & 0x100) != 0;
924 tcg_gen_ext16s_i32(QREG_DIV1, reg);
926 tcg_gen_ext16u_i32(QREG_DIV1, reg);
928 SRC_EA(env, src, OS_WORD, sign, NULL);
929 tcg_gen_mov_i32(QREG_DIV2, src);
931 gen_helper_divs(cpu_env, tcg_const_i32(1));
933 gen_helper_divu(cpu_env, tcg_const_i32(1));
936 tmp = tcg_temp_new();
937 src = tcg_temp_new();
938 tcg_gen_ext16u_i32(tmp, QREG_DIV1);
939 tcg_gen_shli_i32(src, QREG_DIV2, 16);
940 tcg_gen_or_i32(reg, tmp, src);
941 s->cc_op = CC_OP_FLAGS;
951 ext = cpu_lduw_code(env, s->pc);
954 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
959 tcg_gen_mov_i32(QREG_DIV1, num);
960 SRC_EA(env, den, OS_LONG, 0, NULL);
961 tcg_gen_mov_i32(QREG_DIV2, den);
963 gen_helper_divs(cpu_env, tcg_const_i32(0));
965 gen_helper_divu(cpu_env, tcg_const_i32(0));
967 if ((ext & 7) == ((ext >> 12) & 7)) {
969 tcg_gen_mov_i32 (reg, QREG_DIV1);
972 tcg_gen_mov_i32 (reg, QREG_DIV2);
974 s->cc_op = CC_OP_FLAGS;
986 add = (insn & 0x4000) != 0;
988 dest = tcg_temp_new();
990 SRC_EA(env, tmp, OS_LONG, 0, &addr);
994 SRC_EA(env, src, OS_LONG, 0, NULL);
997 tcg_gen_add_i32(dest, tmp, src);
998 gen_helper_xflag_lt(QREG_CC_X, dest, src);
999 s->cc_op = CC_OP_ADD;
1001 gen_helper_xflag_lt(QREG_CC_X, tmp, src);
1002 tcg_gen_sub_i32(dest, tmp, src);
1003 s->cc_op = CC_OP_SUB;
1005 gen_update_cc_add(dest, src);
1007 DEST_EA(env, insn, OS_LONG, dest, &addr);
1009 tcg_gen_mov_i32(reg, dest);
1014 /* Reverse the order of the bits in REG. */
1018 reg = DREG(insn, 0);
1019 gen_helper_bitrev(reg, reg);
1022 DISAS_INSN(bitop_reg)
1032 if ((insn & 0x38) != 0)
1036 op = (insn >> 6) & 3;
1037 SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
1038 src2 = DREG(insn, 9);
1039 dest = tcg_temp_new();
1042 tmp = tcg_temp_new();
1043 if (opsize == OS_BYTE)
1044 tcg_gen_andi_i32(tmp, src2, 7);
1046 tcg_gen_andi_i32(tmp, src2, 31);
1048 tmp = tcg_temp_new();
1049 tcg_gen_shr_i32(tmp, src1, src2);
1050 tcg_gen_andi_i32(tmp, tmp, 1);
1051 tcg_gen_shli_i32(tmp, tmp, 2);
1052 /* Clear CCF_Z if bit set. */
1053 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1054 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1056 tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
1059 tcg_gen_xor_i32(dest, src1, tmp);
1062 tcg_gen_not_i32(tmp, tmp);
1063 tcg_gen_and_i32(dest, src1, tmp);
1066 tcg_gen_or_i32(dest, src1, tmp);
1072 DEST_EA(env, insn, opsize, dest, &addr);
1078 reg = DREG(insn, 0);
1080 gen_helper_sats(reg, reg, QREG_CC_DEST);
1081 gen_logic_cc(s, reg);
1084 static void gen_push(DisasContext *s, TCGv val)
1088 tmp = tcg_temp_new();
1089 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1090 gen_store(s, OS_LONG, tmp, val);
1091 tcg_gen_mov_i32(QREG_SP, tmp);
1103 mask = cpu_lduw_code(env, s->pc);
1105 tmp = gen_lea(env, s, insn, OS_LONG);
1106 if (IS_NULL_QREG(tmp)) {
1110 addr = tcg_temp_new();
1111 tcg_gen_mov_i32(addr, tmp);
1112 is_load = ((insn & 0x0400) != 0);
1113 for (i = 0; i < 16; i++, mask >>= 1) {
1120 tmp = gen_load(s, OS_LONG, addr, 0);
1121 tcg_gen_mov_i32(reg, tmp);
1123 gen_store(s, OS_LONG, addr, reg);
1126 tcg_gen_addi_i32(addr, addr, 4);
1131 DISAS_INSN(bitop_im)
1141 if ((insn & 0x38) != 0)
1145 op = (insn >> 6) & 3;
1147 bitnum = cpu_lduw_code(env, s->pc);
1149 if (bitnum & 0xff00) {
1150 disas_undef(env, s, insn);
1154 SRC_EA(env, src1, opsize, 0, op ? &addr: NULL);
1157 if (opsize == OS_BYTE)
1163 tmp = tcg_temp_new();
1164 assert (CCF_Z == (1 << 2));
1166 tcg_gen_shri_i32(tmp, src1, bitnum - 2);
1167 else if (bitnum < 2)
1168 tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
1170 tcg_gen_mov_i32(tmp, src1);
1171 tcg_gen_andi_i32(tmp, tmp, CCF_Z);
1172 /* Clear CCF_Z if bit set. */
1173 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1174 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1178 tcg_gen_xori_i32(tmp, src1, mask);
1181 tcg_gen_andi_i32(tmp, src1, ~mask);
1184 tcg_gen_ori_i32(tmp, src1, mask);
1189 DEST_EA(env, insn, opsize, tmp, &addr);
1193 DISAS_INSN(arith_im)
1201 op = (insn >> 9) & 7;
1202 SRC_EA(env, src1, OS_LONG, 0, (op == 6) ? NULL : &addr);
1203 im = read_im32(env, s);
1204 dest = tcg_temp_new();
1207 tcg_gen_ori_i32(dest, src1, im);
1208 gen_logic_cc(s, dest);
1211 tcg_gen_andi_i32(dest, src1, im);
1212 gen_logic_cc(s, dest);
1215 tcg_gen_mov_i32(dest, src1);
1216 gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
1217 tcg_gen_subi_i32(dest, dest, im);
1218 gen_update_cc_add(dest, tcg_const_i32(im));
1219 s->cc_op = CC_OP_SUB;
1222 tcg_gen_mov_i32(dest, src1);
1223 tcg_gen_addi_i32(dest, dest, im);
1224 gen_update_cc_add(dest, tcg_const_i32(im));
1225 gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
1226 s->cc_op = CC_OP_ADD;
1229 tcg_gen_xori_i32(dest, src1, im);
1230 gen_logic_cc(s, dest);
1233 tcg_gen_mov_i32(dest, src1);
1234 tcg_gen_subi_i32(dest, dest, im);
1235 gen_update_cc_add(dest, tcg_const_i32(im));
1236 s->cc_op = CC_OP_SUB;
1242 DEST_EA(env, insn, OS_LONG, dest, &addr);
1250 reg = DREG(insn, 0);
1251 tcg_gen_bswap32_i32(reg, reg);
1261 switch (insn >> 12) {
1262 case 1: /* move.b */
1265 case 2: /* move.l */
1268 case 3: /* move.w */
1274 SRC_EA(env, src, opsize, 1, NULL);
1275 op = (insn >> 6) & 7;
1278 /* The value will already have been sign extended. */
1279 dest = AREG(insn, 9);
1280 tcg_gen_mov_i32(dest, src);
1284 dest_ea = ((insn >> 9) & 7) | (op << 3);
1285 DEST_EA(env, dest_ea, opsize, src, NULL);
1286 /* This will be correct because loads sign extend. */
1287 gen_logic_cc(s, src);
1296 reg = DREG(insn, 0);
1297 gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
1305 reg = AREG(insn, 9);
1306 tmp = gen_lea(env, s, insn, OS_LONG);
1307 if (IS_NULL_QREG(tmp)) {
1311 tcg_gen_mov_i32(reg, tmp);
1318 switch ((insn >> 6) & 3) {
1331 DEST_EA(env, insn, opsize, tcg_const_i32(0), NULL);
1332 gen_logic_cc(s, tcg_const_i32(0));
1335 static TCGv gen_get_ccr(DisasContext *s)
1340 dest = tcg_temp_new();
1341 tcg_gen_shli_i32(dest, QREG_CC_X, 4);
1342 tcg_gen_or_i32(dest, dest, QREG_CC_DEST);
1346 DISAS_INSN(move_from_ccr)
1351 ccr = gen_get_ccr(s);
1352 reg = DREG(insn, 0);
1353 gen_partset_reg(OS_WORD, reg, ccr);
1361 reg = DREG(insn, 0);
1362 src1 = tcg_temp_new();
1363 tcg_gen_mov_i32(src1, reg);
1364 tcg_gen_neg_i32(reg, src1);
1365 s->cc_op = CC_OP_SUB;
1366 gen_update_cc_add(reg, src1);
1367 gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
1368 s->cc_op = CC_OP_SUB;
1371 static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only)
1373 tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
1374 tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4);
1376 gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
1380 static void gen_set_sr(CPUM68KState *env, DisasContext *s, uint16_t insn,
1386 s->cc_op = CC_OP_FLAGS;
1387 if ((insn & 0x38) == 0)
1389 tmp = tcg_temp_new();
1390 reg = DREG(insn, 0);
1391 tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
1392 tcg_gen_shri_i32(tmp, reg, 4);
1393 tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
1395 gen_helper_set_sr(cpu_env, reg);
1398 else if ((insn & 0x3f) == 0x3c)
1401 val = cpu_lduw_code(env, s->pc);
1403 gen_set_sr_im(s, val, ccr_only);
1406 disas_undef(env, s, insn);
1409 DISAS_INSN(move_to_ccr)
1411 gen_set_sr(env, s, insn, 1);
1418 reg = DREG(insn, 0);
1419 tcg_gen_not_i32(reg, reg);
1420 gen_logic_cc(s, reg);
1429 src1 = tcg_temp_new();
1430 src2 = tcg_temp_new();
1431 reg = DREG(insn, 0);
1432 tcg_gen_shli_i32(src1, reg, 16);
1433 tcg_gen_shri_i32(src2, reg, 16);
1434 tcg_gen_or_i32(reg, src1, src2);
1435 gen_logic_cc(s, reg);
1442 tmp = gen_lea(env, s, insn, OS_LONG);
1443 if (IS_NULL_QREG(tmp)) {
1456 reg = DREG(insn, 0);
1457 op = (insn >> 6) & 7;
1458 tmp = tcg_temp_new();
1460 tcg_gen_ext16s_i32(tmp, reg);
1462 tcg_gen_ext8s_i32(tmp, reg);
1464 gen_partset_reg(OS_WORD, reg, tmp);
1466 tcg_gen_mov_i32(reg, tmp);
1467 gen_logic_cc(s, tmp);
1475 switch ((insn >> 6) & 3) {
1488 SRC_EA(env, tmp, opsize, 1, NULL);
1489 gen_logic_cc(s, tmp);
1494 /* Implemented as a NOP. */
1499 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
1502 /* ??? This should be atomic. */
1509 dest = tcg_temp_new();
1510 SRC_EA(env, src1, OS_BYTE, 1, &addr);
1511 gen_logic_cc(s, src1);
1512 tcg_gen_ori_i32(dest, src1, 0x80);
1513 DEST_EA(env, insn, OS_BYTE, dest, &addr);
1523 /* The upper 32 bits of the product are discarded, so
1524 muls.l and mulu.l are functionally equivalent. */
1525 ext = cpu_lduw_code(env, s->pc);
1528 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
1531 reg = DREG(ext, 12);
1532 SRC_EA(env, src1, OS_LONG, 0, NULL);
1533 dest = tcg_temp_new();
1534 tcg_gen_mul_i32(dest, src1, reg);
1535 tcg_gen_mov_i32(reg, dest);
1536 /* Unlike m68k, coldfire always clears the overflow bit. */
1537 gen_logic_cc(s, dest);
1546 offset = cpu_ldsw_code(env, s->pc);
1548 reg = AREG(insn, 0);
1549 tmp = tcg_temp_new();
1550 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1551 gen_store(s, OS_LONG, tmp, reg);
1552 if ((insn & 7) != 7)
1553 tcg_gen_mov_i32(reg, tmp);
1554 tcg_gen_addi_i32(QREG_SP, tmp, offset);
1563 src = tcg_temp_new();
1564 reg = AREG(insn, 0);
1565 tcg_gen_mov_i32(src, reg);
1566 tmp = gen_load(s, OS_LONG, src, 0);
1567 tcg_gen_mov_i32(reg, tmp);
1568 tcg_gen_addi_i32(QREG_SP, src, 4);
1579 tmp = gen_load(s, OS_LONG, QREG_SP, 0);
1580 tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
1588 /* Load the target address first to ensure correct exception
1590 tmp = gen_lea(env, s, insn, OS_LONG);
1591 if (IS_NULL_QREG(tmp)) {
1595 if ((insn & 0x40) == 0) {
1597 gen_push(s, tcg_const_i32(s->pc));
1610 SRC_EA(env, src1, OS_LONG, 0, &addr);
1611 val = (insn >> 9) & 7;
1614 dest = tcg_temp_new();
1615 tcg_gen_mov_i32(dest, src1);
1616 if ((insn & 0x38) == 0x08) {
1617 /* Don't update condition codes if the destination is an
1618 address register. */
1619 if (insn & 0x0100) {
1620 tcg_gen_subi_i32(dest, dest, val);
1622 tcg_gen_addi_i32(dest, dest, val);
1625 src2 = tcg_const_i32(val);
1626 if (insn & 0x0100) {
1627 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1628 tcg_gen_subi_i32(dest, dest, val);
1629 s->cc_op = CC_OP_SUB;
1631 tcg_gen_addi_i32(dest, dest, val);
1632 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1633 s->cc_op = CC_OP_ADD;
1635 gen_update_cc_add(dest, src2);
1637 DEST_EA(env, insn, OS_LONG, dest, &addr);
1643 case 2: /* One extension word. */
1646 case 3: /* Two extension words. */
1649 case 4: /* No extension words. */
1652 disas_undef(env, s, insn);
1664 op = (insn >> 8) & 0xf;
1665 offset = (int8_t)insn;
1667 offset = cpu_ldsw_code(env, s->pc);
1669 } else if (offset == -1) {
1670 offset = read_im32(env, s);
1674 gen_push(s, tcg_const_i32(s->pc));
1679 l1 = gen_new_label();
1680 gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1);
1681 gen_jmp_tb(s, 1, base + offset);
1683 gen_jmp_tb(s, 0, s->pc);
1685 /* Unconditional branch. */
1686 gen_jmp_tb(s, 0, base + offset);
1695 tcg_gen_movi_i32(DREG(insn, 9), val);
1696 gen_logic_cc(s, tcg_const_i32(val));
1709 SRC_EA(env, src, opsize, (insn & 0x80) == 0, NULL);
1710 reg = DREG(insn, 9);
1711 tcg_gen_mov_i32(reg, src);
1712 gen_logic_cc(s, src);
1722 reg = DREG(insn, 9);
1723 dest = tcg_temp_new();
1725 SRC_EA(env, src, OS_LONG, 0, &addr);
1726 tcg_gen_or_i32(dest, src, reg);
1727 DEST_EA(env, insn, OS_LONG, dest, &addr);
1729 SRC_EA(env, src, OS_LONG, 0, NULL);
1730 tcg_gen_or_i32(dest, src, reg);
1731 tcg_gen_mov_i32(reg, dest);
1733 gen_logic_cc(s, dest);
1741 SRC_EA(env, src, OS_LONG, 0, NULL);
1742 reg = AREG(insn, 9);
1743 tcg_gen_sub_i32(reg, reg, src);
1752 reg = DREG(insn, 9);
1753 src = DREG(insn, 0);
1754 gen_helper_subx_cc(reg, cpu_env, reg, src);
1762 val = (insn >> 9) & 7;
1765 src = tcg_const_i32(val);
1766 gen_logic_cc(s, src);
1767 DEST_EA(env, insn, OS_LONG, src, NULL);
1778 op = (insn >> 6) & 3;
1782 s->cc_op = CC_OP_CMPB;
1786 s->cc_op = CC_OP_CMPW;
1790 s->cc_op = CC_OP_SUB;
1795 SRC_EA(env, src, opsize, 1, NULL);
1796 reg = DREG(insn, 9);
1797 dest = tcg_temp_new();
1798 tcg_gen_sub_i32(dest, reg, src);
1799 gen_update_cc_add(dest, src);
1814 SRC_EA(env, src, opsize, 1, NULL);
1815 reg = AREG(insn, 9);
1816 dest = tcg_temp_new();
1817 tcg_gen_sub_i32(dest, reg, src);
1818 gen_update_cc_add(dest, src);
1819 s->cc_op = CC_OP_SUB;
1829 SRC_EA(env, src, OS_LONG, 0, &addr);
1830 reg = DREG(insn, 9);
1831 dest = tcg_temp_new();
1832 tcg_gen_xor_i32(dest, src, reg);
1833 gen_logic_cc(s, dest);
1834 DEST_EA(env, insn, OS_LONG, dest, &addr);
1844 reg = DREG(insn, 9);
1845 dest = tcg_temp_new();
1847 SRC_EA(env, src, OS_LONG, 0, &addr);
1848 tcg_gen_and_i32(dest, src, reg);
1849 DEST_EA(env, insn, OS_LONG, dest, &addr);
1851 SRC_EA(env, src, OS_LONG, 0, NULL);
1852 tcg_gen_and_i32(dest, src, reg);
1853 tcg_gen_mov_i32(reg, dest);
1855 gen_logic_cc(s, dest);
1863 SRC_EA(env, src, OS_LONG, 0, NULL);
1864 reg = AREG(insn, 9);
1865 tcg_gen_add_i32(reg, reg, src);
1874 reg = DREG(insn, 9);
1875 src = DREG(insn, 0);
1876 gen_helper_addx_cc(reg, cpu_env, reg, src);
1877 s->cc_op = CC_OP_FLAGS;
1880 /* TODO: This could be implemented without helper functions. */
1881 DISAS_INSN(shift_im)
1887 reg = DREG(insn, 0);
1888 tmp = (insn >> 9) & 7;
1891 shift = tcg_const_i32(tmp);
1892 /* No need to flush flags becuse we know we will set C flag. */
1894 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1897 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1899 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1902 s->cc_op = CC_OP_SHIFT;
1905 DISAS_INSN(shift_reg)
1910 reg = DREG(insn, 0);
1911 shift = DREG(insn, 9);
1912 /* Shift by zero leaves C flag unmodified. */
1915 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1918 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1920 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1923 s->cc_op = CC_OP_SHIFT;
1929 reg = DREG(insn, 0);
1930 gen_logic_cc(s, reg);
1931 gen_helper_ff1(reg, reg);
1934 static TCGv gen_get_sr(DisasContext *s)
1939 ccr = gen_get_ccr(s);
1940 sr = tcg_temp_new();
1941 tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
1942 tcg_gen_or_i32(sr, sr, ccr);
1952 ext = cpu_lduw_code(env, s->pc);
1954 if (ext != 0x46FC) {
1955 gen_exception(s, addr, EXCP_UNSUPPORTED);
1958 ext = cpu_lduw_code(env, s->pc);
1960 if (IS_USER(s) || (ext & SR_S) == 0) {
1961 gen_exception(s, addr, EXCP_PRIVILEGE);
1964 gen_push(s, gen_get_sr(s));
1965 gen_set_sr_im(s, ext, 0);
1968 DISAS_INSN(move_from_sr)
1974 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1978 reg = DREG(insn, 0);
1979 gen_partset_reg(OS_WORD, reg, sr);
1982 DISAS_INSN(move_to_sr)
1985 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1988 gen_set_sr(env, s, insn, 0);
1992 DISAS_INSN(move_from_usp)
1995 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1998 /* TODO: Implement USP. */
1999 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
2002 DISAS_INSN(move_to_usp)
2005 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2008 /* TODO: Implement USP. */
2009 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
2014 gen_exception(s, s->pc, EXCP_HALT_INSN);
2022 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2026 ext = cpu_lduw_code(env, s->pc);
2029 gen_set_sr_im(s, ext, 0);
2030 tcg_gen_movi_i32(cpu_halted, 1);
2031 gen_exception(s, s->pc, EXCP_HLT);
2037 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2040 gen_exception(s, s->pc - 2, EXCP_RTE);
2049 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2053 ext = cpu_lduw_code(env, s->pc);
2057 reg = AREG(ext, 12);
2059 reg = DREG(ext, 12);
2061 gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
2068 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2071 /* ICache fetch. Implement as no-op. */
2077 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2080 /* Cache push/invalidate. Implement as no-op. */
2085 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2091 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2094 /* TODO: Implement wdebug. */
2095 qemu_assert(0, "WDEBUG not implemented");
2100 gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf));
2103 /* ??? FP exceptions are not implemented. Most exceptions are deferred until
2104 immediately before the next FP instruction is executed. */
2118 ext = cpu_lduw_code(env, s->pc);
2120 opmode = ext & 0x7f;
2121 switch ((ext >> 13) & 7) {
2126 case 3: /* fmove out */
2128 tmp32 = tcg_temp_new_i32();
2130 /* ??? TODO: Proper behavior on overflow. */
2131 switch ((ext >> 10) & 7) {
2134 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2138 gen_helper_f64_to_f32(tmp32, cpu_env, src);
2142 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2144 case 5: /* OS_DOUBLE */
2145 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2146 switch ((insn >> 3) & 7) {
2151 tcg_gen_addi_i32(tmp32, tmp32, -8);
2154 offset = cpu_ldsw_code(env, s->pc);
2156 tcg_gen_addi_i32(tmp32, tmp32, offset);
2161 gen_store64(s, tmp32, src);
2162 switch ((insn >> 3) & 7) {
2164 tcg_gen_addi_i32(tmp32, tmp32, 8);
2165 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2168 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2171 tcg_temp_free_i32(tmp32);
2175 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2180 DEST_EA(env, insn, opsize, tmp32, NULL);
2181 tcg_temp_free_i32(tmp32);
2183 case 4: /* fmove to control register. */
2184 switch ((ext >> 10) & 7) {
2186 /* Not implemented. Ignore writes. */
2191 cpu_abort(NULL, "Unimplemented: fmove to control %d",
2195 case 5: /* fmove from control register. */
2196 switch ((ext >> 10) & 7) {
2198 /* Not implemented. Always return zero. */
2199 tmp32 = tcg_const_i32(0);
2204 cpu_abort(NULL, "Unimplemented: fmove from control %d",
2208 DEST_EA(env, insn, OS_LONG, tmp32, NULL);
2210 case 6: /* fmovem */
2216 if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0)
2218 tmp32 = gen_lea(env, s, insn, OS_LONG);
2219 if (IS_NULL_QREG(tmp32)) {
2223 addr = tcg_temp_new_i32();
2224 tcg_gen_mov_i32(addr, tmp32);
2226 for (i = 0; i < 8; i++) {
2230 if (ext & (1 << 13)) {
2232 tcg_gen_qemu_stf64(dest, addr, IS_USER(s));
2235 tcg_gen_qemu_ldf64(dest, addr, IS_USER(s));
2237 if (ext & (mask - 1))
2238 tcg_gen_addi_i32(addr, addr, 8);
2242 tcg_temp_free_i32(addr);
2246 if (ext & (1 << 14)) {
2247 /* Source effective address. */
2248 switch ((ext >> 10) & 7) {
2249 case 0: opsize = OS_LONG; break;
2250 case 1: opsize = OS_SINGLE; break;
2251 case 4: opsize = OS_WORD; break;
2252 case 5: opsize = OS_DOUBLE; break;
2253 case 6: opsize = OS_BYTE; break;
2257 if (opsize == OS_DOUBLE) {
2258 tmp32 = tcg_temp_new_i32();
2259 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2260 switch ((insn >> 3) & 7) {
2265 tcg_gen_addi_i32(tmp32, tmp32, -8);
2268 offset = cpu_ldsw_code(env, s->pc);
2270 tcg_gen_addi_i32(tmp32, tmp32, offset);
2273 offset = cpu_ldsw_code(env, s->pc);
2274 offset += s->pc - 2;
2276 tcg_gen_addi_i32(tmp32, tmp32, offset);
2281 src = gen_load64(s, tmp32);
2282 switch ((insn >> 3) & 7) {
2284 tcg_gen_addi_i32(tmp32, tmp32, 8);
2285 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2288 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2291 tcg_temp_free_i32(tmp32);
2293 SRC_EA(env, tmp32, opsize, 1, NULL);
2294 src = tcg_temp_new_i64();
2299 gen_helper_i32_to_f64(src, cpu_env, tmp32);
2302 gen_helper_f32_to_f64(src, cpu_env, tmp32);
2307 /* Source register. */
2308 src = FREG(ext, 10);
2310 dest = FREG(ext, 7);
2311 res = tcg_temp_new_i64();
2313 tcg_gen_mov_f64(res, dest);
2317 case 0: case 0x40: case 0x44: /* fmove */
2318 tcg_gen_mov_f64(res, src);
2321 gen_helper_iround_f64(res, cpu_env, src);
2324 case 3: /* fintrz */
2325 gen_helper_itrunc_f64(res, cpu_env, src);
2328 case 4: case 0x41: case 0x45: /* fsqrt */
2329 gen_helper_sqrt_f64(res, cpu_env, src);
2331 case 0x18: case 0x58: case 0x5c: /* fabs */
2332 gen_helper_abs_f64(res, src);
2334 case 0x1a: case 0x5a: case 0x5e: /* fneg */
2335 gen_helper_chs_f64(res, src);
2337 case 0x20: case 0x60: case 0x64: /* fdiv */
2338 gen_helper_div_f64(res, cpu_env, res, src);
2340 case 0x22: case 0x62: case 0x66: /* fadd */
2341 gen_helper_add_f64(res, cpu_env, res, src);
2343 case 0x23: case 0x63: case 0x67: /* fmul */
2344 gen_helper_mul_f64(res, cpu_env, res, src);
2346 case 0x28: case 0x68: case 0x6c: /* fsub */
2347 gen_helper_sub_f64(res, cpu_env, res, src);
2349 case 0x38: /* fcmp */
2350 gen_helper_sub_cmp_f64(res, cpu_env, res, src);
2354 case 0x3a: /* ftst */
2355 tcg_gen_mov_f64(res, src);
2362 if (ext & (1 << 14)) {
2363 tcg_temp_free_i64(src);
2366 if (opmode & 0x40) {
2367 if ((opmode & 0x4) != 0)
2369 } else if ((s->fpcr & M68K_FPCR_PREC) == 0) {
2374 TCGv tmp = tcg_temp_new_i32();
2375 gen_helper_f64_to_f32(tmp, cpu_env, res);
2376 gen_helper_f32_to_f64(res, cpu_env, tmp);
2377 tcg_temp_free_i32(tmp);
2379 tcg_gen_mov_f64(QREG_FP_RESULT, res);
2381 tcg_gen_mov_f64(dest, res);
2383 tcg_temp_free_i64(res);
2386 /* FIXME: Is this right for offset addressing modes? */
2388 disas_undef_fpu(env, s, insn);
2399 offset = cpu_ldsw_code(env, s->pc);
2401 if (insn & (1 << 6)) {
2402 offset = (offset << 16) | cpu_lduw_code(env, s->pc);
2406 l1 = gen_new_label();
2407 /* TODO: Raise BSUN exception. */
2408 flag = tcg_temp_new();
2409 gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT);
2410 /* Jump to l1 if condition is true. */
2411 switch (insn & 0xf) {
2414 case 1: /* eq (=0) */
2415 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2417 case 2: /* ogt (=1) */
2418 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
2420 case 3: /* oge (=0 or =1) */
2421 tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
2423 case 4: /* olt (=-1) */
2424 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
2426 case 5: /* ole (=-1 or =0) */
2427 tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
2429 case 6: /* ogl (=-1 or =1) */
2430 tcg_gen_andi_i32(flag, flag, 1);
2431 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2433 case 7: /* or (=2) */
2434 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
2436 case 8: /* un (<2) */
2437 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
2439 case 9: /* ueq (=0 or =2) */
2440 tcg_gen_andi_i32(flag, flag, 1);
2441 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2443 case 10: /* ugt (>0) */
2444 tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
2446 case 11: /* uge (>=0) */
2447 tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
2449 case 12: /* ult (=-1 or =2) */
2450 tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
2452 case 13: /* ule (!=1) */
2453 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
2455 case 14: /* ne (!=0) */
2456 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2462 gen_jmp_tb(s, 0, s->pc);
2464 gen_jmp_tb(s, 1, addr + offset);
2467 DISAS_INSN(frestore)
2469 /* TODO: Implement frestore. */
2470 qemu_assert(0, "FRESTORE not implemented");
2475 /* TODO: Implement fsave. */
2476 qemu_assert(0, "FSAVE not implemented");
2479 static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper)
2481 TCGv tmp = tcg_temp_new();
2482 if (s->env->macsr & MACSR_FI) {
2484 tcg_gen_andi_i32(tmp, val, 0xffff0000);
2486 tcg_gen_shli_i32(tmp, val, 16);
2487 } else if (s->env->macsr & MACSR_SU) {
2489 tcg_gen_sari_i32(tmp, val, 16);
2491 tcg_gen_ext16s_i32(tmp, val);
2494 tcg_gen_shri_i32(tmp, val, 16);
2496 tcg_gen_ext16u_i32(tmp, val);
2501 static void gen_mac_clear_flags(void)
2503 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR,
2504 ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV));
2520 s->mactmp = tcg_temp_new_i64();
2524 ext = cpu_lduw_code(env, s->pc);
2527 acc = ((insn >> 7) & 1) | ((ext >> 3) & 2);
2528 dual = ((insn & 0x30) != 0 && (ext & 3) != 0);
2529 if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
2530 disas_undef(env, s, insn);
2534 /* MAC with load. */
2535 tmp = gen_lea(env, s, insn, OS_LONG);
2536 addr = tcg_temp_new();
2537 tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK);
2538 /* Load the value now to ensure correct exception behavior.
2539 Perform writeback after reading the MAC inputs. */
2540 loadval = gen_load(s, OS_LONG, addr, 0);
2543 rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12);
2544 ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0);
2546 loadval = addr = NULL_QREG;
2547 rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2548 ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2551 gen_mac_clear_flags();
2554 /* Disabled because conditional branches clobber temporary vars. */
2555 if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
2556 /* Skip the multiply if we know we will ignore it. */
2557 l1 = gen_new_label();
2558 tmp = tcg_temp_new();
2559 tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
2560 gen_op_jmp_nz32(tmp, l1);
2564 if ((ext & 0x0800) == 0) {
2566 rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0);
2567 ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0);
2569 if (s->env->macsr & MACSR_FI) {
2570 gen_helper_macmulf(s->mactmp, cpu_env, rx, ry);
2572 if (s->env->macsr & MACSR_SU)
2573 gen_helper_macmuls(s->mactmp, cpu_env, rx, ry);
2575 gen_helper_macmulu(s->mactmp, cpu_env, rx, ry);
2576 switch ((ext >> 9) & 3) {
2578 tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
2581 tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
2587 /* Save the overflow flag from the multiply. */
2588 saved_flags = tcg_temp_new();
2589 tcg_gen_mov_i32(saved_flags, QREG_MACSR);
2591 saved_flags = NULL_QREG;
2595 /* Disabled because conditional branches clobber temporary vars. */
2596 if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
2597 /* Skip the accumulate if the value is already saturated. */
2598 l1 = gen_new_label();
2599 tmp = tcg_temp_new();
2600 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2601 gen_op_jmp_nz32(tmp, l1);
2606 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2608 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2610 if (s->env->macsr & MACSR_FI)
2611 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2612 else if (s->env->macsr & MACSR_SU)
2613 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2615 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2618 /* Disabled because conditional branches clobber temporary vars. */
2624 /* Dual accumulate variant. */
2625 acc = (ext >> 2) & 3;
2626 /* Restore the overflow flag from the multiplier. */
2627 tcg_gen_mov_i32(QREG_MACSR, saved_flags);
2629 /* Disabled because conditional branches clobber temporary vars. */
2630 if ((s->env->macsr & MACSR_OMC) != 0) {
2631 /* Skip the accumulate if the value is already saturated. */
2632 l1 = gen_new_label();
2633 tmp = tcg_temp_new();
2634 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2635 gen_op_jmp_nz32(tmp, l1);
2639 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2641 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2642 if (s->env->macsr & MACSR_FI)
2643 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2644 else if (s->env->macsr & MACSR_SU)
2645 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2647 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2649 /* Disabled because conditional branches clobber temporary vars. */
2654 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc));
2658 rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2659 tcg_gen_mov_i32(rw, loadval);
2660 /* FIXME: Should address writeback happen with the masked or
2662 switch ((insn >> 3) & 7) {
2663 case 3: /* Post-increment. */
2664 tcg_gen_addi_i32(AREG(insn, 0), addr, 4);
2666 case 4: /* Pre-decrement. */
2667 tcg_gen_mov_i32(AREG(insn, 0), addr);
2672 DISAS_INSN(from_mac)
2678 rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2679 accnum = (insn >> 9) & 3;
2680 acc = MACREG(accnum);
2681 if (s->env->macsr & MACSR_FI) {
2682 gen_helper_get_macf(rx, cpu_env, acc);
2683 } else if ((s->env->macsr & MACSR_OMC) == 0) {
2684 tcg_gen_trunc_i64_i32(rx, acc);
2685 } else if (s->env->macsr & MACSR_SU) {
2686 gen_helper_get_macs(rx, acc);
2688 gen_helper_get_macu(rx, acc);
2691 tcg_gen_movi_i64(acc, 0);
2692 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2696 DISAS_INSN(move_mac)
2698 /* FIXME: This can be done without a helper. */
2702 dest = tcg_const_i32((insn >> 9) & 3);
2703 gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src));
2704 gen_mac_clear_flags();
2705 gen_helper_mac_set_flags(cpu_env, dest);
2708 DISAS_INSN(from_macsr)
2712 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2713 tcg_gen_mov_i32(reg, QREG_MACSR);
2716 DISAS_INSN(from_mask)
2719 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2720 tcg_gen_mov_i32(reg, QREG_MAC_MASK);
2723 DISAS_INSN(from_mext)
2727 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2728 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2729 if (s->env->macsr & MACSR_FI)
2730 gen_helper_get_mac_extf(reg, cpu_env, acc);
2732 gen_helper_get_mac_exti(reg, cpu_env, acc);
2735 DISAS_INSN(macsr_to_ccr)
2737 tcg_gen_movi_i32(QREG_CC_X, 0);
2738 tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
2739 s->cc_op = CC_OP_FLAGS;
2747 accnum = (insn >> 9) & 3;
2748 acc = MACREG(accnum);
2749 SRC_EA(env, val, OS_LONG, 0, NULL);
2750 if (s->env->macsr & MACSR_FI) {
2751 tcg_gen_ext_i32_i64(acc, val);
2752 tcg_gen_shli_i64(acc, acc, 8);
2753 } else if (s->env->macsr & MACSR_SU) {
2754 tcg_gen_ext_i32_i64(acc, val);
2756 tcg_gen_extu_i32_i64(acc, val);
2758 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2759 gen_mac_clear_flags();
2760 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum));
2763 DISAS_INSN(to_macsr)
2766 SRC_EA(env, val, OS_LONG, 0, NULL);
2767 gen_helper_set_macsr(cpu_env, val);
2774 SRC_EA(env, val, OS_LONG, 0, NULL);
2775 tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
2782 SRC_EA(env, val, OS_LONG, 0, NULL);
2783 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2784 if (s->env->macsr & MACSR_FI)
2785 gen_helper_set_mac_extf(cpu_env, val, acc);
2786 else if (s->env->macsr & MACSR_SU)
2787 gen_helper_set_mac_exts(cpu_env, val, acc);
2789 gen_helper_set_mac_extu(cpu_env, val, acc);
2792 static disas_proc opcode_table[65536];
2795 register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask)
2801 /* Sanity check. All set bits must be included in the mask. */
2802 if (opcode & ~mask) {
2804 "qemu internal error: bogus opcode definition %04x/%04x\n",
2808 /* This could probably be cleverer. For now just optimize the case where
2809 the top bits are known. */
2810 /* Find the first zero bit in the mask. */
2812 while ((i & mask) != 0)
2814 /* Iterate over all combinations of this and lower bits. */
2819 from = opcode & ~(i - 1);
2821 for (i = from; i < to; i++) {
2822 if ((i & mask) == opcode)
2823 opcode_table[i] = proc;
2827 /* Register m68k opcode handlers. Order is important.
2828 Later insn override earlier ones. */
2829 void register_m68k_insns (CPUM68KState *env)
2831 #define INSN(name, opcode, mask, feature) do { \
2832 if (m68k_feature(env, M68K_FEATURE_##feature)) \
2833 register_opcode(disas_##name, 0x##opcode, 0x##mask); \
2835 INSN(undef, 0000, 0000, CF_ISA_A);
2836 INSN(arith_im, 0080, fff8, CF_ISA_A);
2837 INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
2838 INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
2839 INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
2840 INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
2841 INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
2842 INSN(arith_im, 0280, fff8, CF_ISA_A);
2843 INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
2844 INSN(arith_im, 0480, fff8, CF_ISA_A);
2845 INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
2846 INSN(arith_im, 0680, fff8, CF_ISA_A);
2847 INSN(bitop_im, 0800, ffc0, CF_ISA_A);
2848 INSN(bitop_im, 0840, ffc0, CF_ISA_A);
2849 INSN(bitop_im, 0880, ffc0, CF_ISA_A);
2850 INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
2851 INSN(arith_im, 0a80, fff8, CF_ISA_A);
2852 INSN(arith_im, 0c00, ff38, CF_ISA_A);
2853 INSN(move, 1000, f000, CF_ISA_A);
2854 INSN(move, 2000, f000, CF_ISA_A);
2855 INSN(move, 3000, f000, CF_ISA_A);
2856 INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC);
2857 INSN(negx, 4080, fff8, CF_ISA_A);
2858 INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
2859 INSN(lea, 41c0, f1c0, CF_ISA_A);
2860 INSN(clr, 4200, ff00, CF_ISA_A);
2861 INSN(undef, 42c0, ffc0, CF_ISA_A);
2862 INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
2863 INSN(neg, 4480, fff8, CF_ISA_A);
2864 INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
2865 INSN(not, 4680, fff8, CF_ISA_A);
2866 INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
2867 INSN(pea, 4840, ffc0, CF_ISA_A);
2868 INSN(swap, 4840, fff8, CF_ISA_A);
2869 INSN(movem, 48c0, fbc0, CF_ISA_A);
2870 INSN(ext, 4880, fff8, CF_ISA_A);
2871 INSN(ext, 48c0, fff8, CF_ISA_A);
2872 INSN(ext, 49c0, fff8, CF_ISA_A);
2873 INSN(tst, 4a00, ff00, CF_ISA_A);
2874 INSN(tas, 4ac0, ffc0, CF_ISA_B);
2875 INSN(halt, 4ac8, ffff, CF_ISA_A);
2876 INSN(pulse, 4acc, ffff, CF_ISA_A);
2877 INSN(illegal, 4afc, ffff, CF_ISA_A);
2878 INSN(mull, 4c00, ffc0, CF_ISA_A);
2879 INSN(divl, 4c40, ffc0, CF_ISA_A);
2880 INSN(sats, 4c80, fff8, CF_ISA_B);
2881 INSN(trap, 4e40, fff0, CF_ISA_A);
2882 INSN(link, 4e50, fff8, CF_ISA_A);
2883 INSN(unlk, 4e58, fff8, CF_ISA_A);
2884 INSN(move_to_usp, 4e60, fff8, USP);
2885 INSN(move_from_usp, 4e68, fff8, USP);
2886 INSN(nop, 4e71, ffff, CF_ISA_A);
2887 INSN(stop, 4e72, ffff, CF_ISA_A);
2888 INSN(rte, 4e73, ffff, CF_ISA_A);
2889 INSN(rts, 4e75, ffff, CF_ISA_A);
2890 INSN(movec, 4e7b, ffff, CF_ISA_A);
2891 INSN(jump, 4e80, ffc0, CF_ISA_A);
2892 INSN(jump, 4ec0, ffc0, CF_ISA_A);
2893 INSN(addsubq, 5180, f1c0, CF_ISA_A);
2894 INSN(scc, 50c0, f0f8, CF_ISA_A);
2895 INSN(addsubq, 5080, f1c0, CF_ISA_A);
2896 INSN(tpf, 51f8, fff8, CF_ISA_A);
2898 /* Branch instructions. */
2899 INSN(branch, 6000, f000, CF_ISA_A);
2900 /* Disable long branch instructions, then add back the ones we want. */
2901 INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */
2902 INSN(branch, 60ff, f0ff, CF_ISA_B);
2903 INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */
2904 INSN(branch, 60ff, ffff, BRAL);
2906 INSN(moveq, 7000, f100, CF_ISA_A);
2907 INSN(mvzs, 7100, f100, CF_ISA_B);
2908 INSN(or, 8000, f000, CF_ISA_A);
2909 INSN(divw, 80c0, f0c0, CF_ISA_A);
2910 INSN(addsub, 9000, f000, CF_ISA_A);
2911 INSN(subx, 9180, f1f8, CF_ISA_A);
2912 INSN(suba, 91c0, f1c0, CF_ISA_A);
2914 INSN(undef_mac, a000, f000, CF_ISA_A);
2915 INSN(mac, a000, f100, CF_EMAC);
2916 INSN(from_mac, a180, f9b0, CF_EMAC);
2917 INSN(move_mac, a110, f9fc, CF_EMAC);
2918 INSN(from_macsr,a980, f9f0, CF_EMAC);
2919 INSN(from_mask, ad80, fff0, CF_EMAC);
2920 INSN(from_mext, ab80, fbf0, CF_EMAC);
2921 INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC);
2922 INSN(to_mac, a100, f9c0, CF_EMAC);
2923 INSN(to_macsr, a900, ffc0, CF_EMAC);
2924 INSN(to_mext, ab00, fbc0, CF_EMAC);
2925 INSN(to_mask, ad00, ffc0, CF_EMAC);
2927 INSN(mov3q, a140, f1c0, CF_ISA_B);
2928 INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
2929 INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
2930 INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
2931 INSN(cmp, b080, f1c0, CF_ISA_A);
2932 INSN(cmpa, b1c0, f1c0, CF_ISA_A);
2933 INSN(eor, b180, f1c0, CF_ISA_A);
2934 INSN(and, c000, f000, CF_ISA_A);
2935 INSN(mulw, c0c0, f0c0, CF_ISA_A);
2936 INSN(addsub, d000, f000, CF_ISA_A);
2937 INSN(addx, d180, f1f8, CF_ISA_A);
2938 INSN(adda, d1c0, f1c0, CF_ISA_A);
2939 INSN(shift_im, e080, f0f0, CF_ISA_A);
2940 INSN(shift_reg, e0a0, f0f0, CF_ISA_A);
2941 INSN(undef_fpu, f000, f000, CF_ISA_A);
2942 INSN(fpu, f200, ffc0, CF_FPU);
2943 INSN(fbcc, f280, ffc0, CF_FPU);
2944 INSN(frestore, f340, ffc0, CF_FPU);
2945 INSN(fsave, f340, ffc0, CF_FPU);
2946 INSN(intouch, f340, ffc0, CF_ISA_A);
2947 INSN(cpushl, f428, ff38, CF_ISA_A);
2948 INSN(wddata, fb00, ff00, CF_ISA_A);
2949 INSN(wdebug, fbc0, ffc0, CF_ISA_A);
2953 /* ??? Some of this implementation is not exception safe. We should always
2954 write back the result to memory before setting the condition codes. */
2955 static void disas_m68k_insn(CPUM68KState * env, DisasContext *s)
2959 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
2960 tcg_gen_debug_insn_start(s->pc);
2963 insn = cpu_lduw_code(env, s->pc);
2966 opcode_table[insn](env, s, insn);
2969 /* generate intermediate code for basic block 'tb'. */
2971 gen_intermediate_code_internal(M68kCPU *cpu, TranslationBlock *tb,
2974 CPUState *cs = CPU(cpu);
2975 CPUM68KState *env = &cpu->env;
2976 DisasContext dc1, *dc = &dc1;
2977 uint16_t *gen_opc_end;
2980 target_ulong pc_start;
2985 /* generate intermediate code */
2990 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
2993 dc->is_jmp = DISAS_NEXT;
2995 dc->cc_op = CC_OP_DYNAMIC;
2996 dc->singlestep_enabled = cs->singlestep_enabled;
2997 dc->fpcr = env->fpcr;
2998 dc->user = (env->sr & SR_S) == 0;
3003 max_insns = tb->cflags & CF_COUNT_MASK;
3005 max_insns = CF_COUNT_MASK;
3009 pc_offset = dc->pc - pc_start;
3010 gen_throws_exception = NULL;
3011 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
3012 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
3013 if (bp->pc == dc->pc) {
3014 gen_exception(dc, dc->pc, EXCP_DEBUG);
3015 dc->is_jmp = DISAS_JUMP;
3023 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3027 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3029 tcg_ctx.gen_opc_pc[lj] = dc->pc;
3030 tcg_ctx.gen_opc_instr_start[lj] = 1;
3031 tcg_ctx.gen_opc_icount[lj] = num_insns;
3033 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
3035 dc->insn_pc = dc->pc;
3036 disas_m68k_insn(env, dc);
3038 } while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
3039 !cs->singlestep_enabled &&
3041 (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
3042 num_insns < max_insns);
3044 if (tb->cflags & CF_LAST_IO)
3046 if (unlikely(cs->singlestep_enabled)) {
3047 /* Make sure the pc is updated, and raise a debug exception. */
3049 gen_flush_cc_op(dc);
3050 tcg_gen_movi_i32(QREG_PC, dc->pc);
3052 gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG));
3054 switch(dc->is_jmp) {
3056 gen_flush_cc_op(dc);
3057 gen_jmp_tb(dc, 0, dc->pc);
3062 gen_flush_cc_op(dc);
3063 /* indicate that the hash table must be used to find the next TB */
3067 /* nothing more to generate */
3071 gen_tb_end(tb, num_insns);
3072 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
3075 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3076 qemu_log("----------------\n");
3077 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3078 log_target_disas(env, pc_start, dc->pc - pc_start, 0);
3083 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3086 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3088 tb->size = dc->pc - pc_start;
3089 tb->icount = num_insns;
3093 //expand_target_qops();
3096 void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb)
3098 gen_intermediate_code_internal(m68k_env_get_cpu(env), tb, false);
3101 void gen_intermediate_code_pc(CPUM68KState *env, TranslationBlock *tb)
3103 gen_intermediate_code_internal(m68k_env_get_cpu(env), tb, true);
3106 void m68k_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3109 M68kCPU *cpu = M68K_CPU(cs);
3110 CPUM68KState *env = &cpu->env;
3114 for (i = 0; i < 8; i++)
3116 u.d = env->fregs[i];
3117 cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
3118 i, env->dregs[i], i, env->aregs[i],
3119 i, u.l.upper, u.l.lower, *(double *)&u.d);
3121 cpu_fprintf (f, "PC = %08x ", env->pc);
3123 cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-',
3124 (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-',
3125 (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-');
3126 cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result);
3129 void restore_state_to_opc(CPUM68KState *env, TranslationBlock *tb, int pc_pos)
3131 env->pc = tcg_ctx.gen_opc_pc[pc_pos];