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/>.
21 #include "qemu/osdep.h"
23 #include "disas/disas.h"
26 #include "exec/cpu_ldst.h"
28 #include "exec/helper-proto.h"
29 #include "exec/helper-gen.h"
31 #include "trace-tcg.h"
35 //#define DEBUG_DISPATCH 1
37 /* Fake floating point. */
38 #define tcg_gen_mov_f64 tcg_gen_mov_i64
39 #define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
40 #define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
42 #define DEFO32(name, offset) static TCGv QREG_##name;
43 #define DEFO64(name, offset) static TCGv_i64 QREG_##name;
44 #define DEFF64(name, offset) static TCGv_i64 QREG_##name;
50 static TCGv_i32 cpu_halted;
51 static TCGv_i32 cpu_exception_index;
53 static TCGv_env cpu_env;
55 static char cpu_reg_names[3*8*3 + 5*4];
56 static TCGv cpu_dregs[8];
57 static TCGv cpu_aregs[8];
58 static TCGv_i64 cpu_fregs[8];
59 static TCGv_i64 cpu_macc[4];
61 #define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7]
62 #define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7]
63 #define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7]
64 #define MACREG(acc) cpu_macc[acc]
65 #define QREG_SP cpu_aregs[7]
67 static TCGv NULL_QREG;
68 #define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
69 /* Used to distinguish stores from bad addressing modes. */
70 static TCGv store_dummy;
72 #include "exec/gen-icount.h"
74 void m68k_tcg_init(void)
79 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
81 #define DEFO32(name, offset) \
82 QREG_##name = tcg_global_mem_new_i32(cpu_env, \
83 offsetof(CPUM68KState, offset), #name);
84 #define DEFO64(name, offset) \
85 QREG_##name = tcg_global_mem_new_i64(cpu_env, \
86 offsetof(CPUM68KState, offset), #name);
87 #define DEFF64(name, offset) DEFO64(name, offset)
93 cpu_halted = tcg_global_mem_new_i32(cpu_env,
94 -offsetof(M68kCPU, env) +
95 offsetof(CPUState, halted), "HALTED");
96 cpu_exception_index = tcg_global_mem_new_i32(cpu_env,
97 -offsetof(M68kCPU, env) +
98 offsetof(CPUState, exception_index),
102 for (i = 0; i < 8; i++) {
103 sprintf(p, "D%d", i);
104 cpu_dregs[i] = tcg_global_mem_new(cpu_env,
105 offsetof(CPUM68KState, dregs[i]), p);
107 sprintf(p, "A%d", i);
108 cpu_aregs[i] = tcg_global_mem_new(cpu_env,
109 offsetof(CPUM68KState, aregs[i]), p);
111 sprintf(p, "F%d", i);
112 cpu_fregs[i] = tcg_global_mem_new_i64(cpu_env,
113 offsetof(CPUM68KState, fregs[i]), p);
116 for (i = 0; i < 4; i++) {
117 sprintf(p, "ACC%d", i);
118 cpu_macc[i] = tcg_global_mem_new_i64(cpu_env,
119 offsetof(CPUM68KState, macc[i]), p);
123 NULL_QREG = tcg_global_mem_new(cpu_env, -4, "NULL");
124 store_dummy = tcg_global_mem_new(cpu_env, -8, "NULL");
127 /* internal defines */
128 typedef struct DisasContext {
130 target_ulong insn_pc; /* Start of the current instruction. */
136 struct TranslationBlock *tb;
137 int singlestep_enabled;
142 #define DISAS_JUMP_NEXT 4
144 #if defined(CONFIG_USER_ONLY)
147 #define IS_USER(s) s->user
150 /* XXX: move that elsewhere */
151 /* ??? Fix exceptions. */
152 static void *gen_throws_exception;
153 #define gen_last_qop NULL
161 typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn);
163 #ifdef DEBUG_DISPATCH
164 #define DISAS_INSN(name) \
165 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
167 static void disas_##name(CPUM68KState *env, DisasContext *s, \
170 qemu_log("Dispatch " #name "\n"); \
171 real_disas_##name(s, env, insn); \
173 static void real_disas_##name(CPUM68KState *env, DisasContext *s, \
176 #define DISAS_INSN(name) \
177 static void disas_##name(CPUM68KState *env, DisasContext *s, \
181 /* Generate a load from the specified address. Narrow values are
182 sign extended to full register width. */
183 static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign)
186 int index = IS_USER(s);
187 tmp = tcg_temp_new_i32();
191 tcg_gen_qemu_ld8s(tmp, addr, index);
193 tcg_gen_qemu_ld8u(tmp, addr, index);
197 tcg_gen_qemu_ld16s(tmp, addr, index);
199 tcg_gen_qemu_ld16u(tmp, addr, index);
203 tcg_gen_qemu_ld32u(tmp, addr, index);
206 g_assert_not_reached();
208 gen_throws_exception = gen_last_qop;
212 static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr)
215 int index = IS_USER(s);
216 tmp = tcg_temp_new_i64();
217 tcg_gen_qemu_ldf64(tmp, addr, index);
218 gen_throws_exception = gen_last_qop;
222 /* Generate a store. */
223 static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val)
225 int index = IS_USER(s);
228 tcg_gen_qemu_st8(val, addr, index);
231 tcg_gen_qemu_st16(val, addr, index);
235 tcg_gen_qemu_st32(val, addr, index);
238 g_assert_not_reached();
240 gen_throws_exception = gen_last_qop;
243 static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val)
245 int index = IS_USER(s);
246 tcg_gen_qemu_stf64(val, addr, index);
247 gen_throws_exception = gen_last_qop;
256 /* Generate an unsigned load if VAL is 0 a signed load if val is -1,
257 otherwise generate a store. */
258 static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val,
261 if (what == EA_STORE) {
262 gen_store(s, opsize, addr, val);
265 return gen_load(s, opsize, addr, what == EA_LOADS);
269 /* Read a 32-bit immediate constant. */
270 static inline uint32_t read_im32(CPUM68KState *env, DisasContext *s)
273 im = ((uint32_t)cpu_lduw_code(env, s->pc)) << 16;
275 im |= cpu_lduw_code(env, s->pc);
280 /* Calculate and address index. */
281 static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
286 add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12);
287 if ((ext & 0x800) == 0) {
288 tcg_gen_ext16s_i32(tmp, add);
291 scale = (ext >> 9) & 3;
293 tcg_gen_shli_i32(tmp, add, scale);
299 /* Handle a base + index + displacement effective addresss.
300 A NULL_QREG base means pc-relative. */
301 static TCGv gen_lea_indexed(CPUM68KState *env, DisasContext *s, TCGv base)
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 g_assert_not_reached();
444 /* Assign value to a register. If the width is less than the register width
445 only the low part of the register is set. */
446 static void gen_partset_reg(int opsize, TCGv reg, TCGv val)
451 tcg_gen_andi_i32(reg, reg, 0xffffff00);
452 tmp = tcg_temp_new();
453 tcg_gen_ext8u_i32(tmp, val);
454 tcg_gen_or_i32(reg, reg, tmp);
457 tcg_gen_andi_i32(reg, reg, 0xffff0000);
458 tmp = tcg_temp_new();
459 tcg_gen_ext16u_i32(tmp, val);
460 tcg_gen_or_i32(reg, reg, tmp);
464 tcg_gen_mov_i32(reg, val);
467 g_assert_not_reached();
471 /* Sign or zero extend a value. */
472 static inline TCGv gen_extend(TCGv val, int opsize, int sign)
478 tmp = tcg_temp_new();
480 tcg_gen_ext8s_i32(tmp, val);
482 tcg_gen_ext8u_i32(tmp, val);
485 tmp = tcg_temp_new();
487 tcg_gen_ext16s_i32(tmp, val);
489 tcg_gen_ext16u_i32(tmp, val);
496 g_assert_not_reached();
501 /* Generate code for an "effective address". Does not adjust the base
502 register for autoincrement addressing modes. */
503 static TCGv gen_lea(CPUM68KState *env, DisasContext *s, uint16_t insn,
511 switch ((insn >> 3) & 7) {
512 case 0: /* Data register direct. */
513 case 1: /* Address register direct. */
515 case 2: /* Indirect register */
516 case 3: /* Indirect postincrement. */
517 return AREG(insn, 0);
518 case 4: /* Indirect predecrememnt. */
520 tmp = tcg_temp_new();
521 tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
523 case 5: /* Indirect displacement. */
525 tmp = tcg_temp_new();
526 ext = cpu_lduw_code(env, s->pc);
528 tcg_gen_addi_i32(tmp, reg, (int16_t)ext);
530 case 6: /* Indirect index + displacement. */
532 return gen_lea_indexed(env, s, reg);
535 case 0: /* Absolute short. */
536 offset = cpu_ldsw_code(env, s->pc);
538 return tcg_const_i32(offset);
539 case 1: /* Absolute long. */
540 offset = read_im32(env, s);
541 return tcg_const_i32(offset);
542 case 2: /* pc displacement */
544 offset += cpu_ldsw_code(env, s->pc);
546 return tcg_const_i32(offset);
547 case 3: /* pc index+displacement. */
548 return gen_lea_indexed(env, s, NULL_QREG);
549 case 4: /* Immediate. */
554 /* Should never happen. */
558 /* Helper function for gen_ea. Reuse the computed address between the
559 for read/write operands. */
560 static inline TCGv gen_ea_once(CPUM68KState *env, DisasContext *s,
561 uint16_t insn, int opsize, TCGv val,
562 TCGv *addrp, ea_what what)
566 if (addrp && what == EA_STORE) {
569 tmp = gen_lea(env, s, insn, opsize);
570 if (IS_NULL_QREG(tmp))
575 return gen_ldst(s, opsize, tmp, val, what);
578 /* Generate code to load/store a value from/into an EA. If VAL > 0 this is
579 a write otherwise it is a read (0 == sign extend, -1 == zero extend).
580 ADDRP is non-null for readwrite operands. */
581 static TCGv gen_ea(CPUM68KState *env, DisasContext *s, uint16_t insn,
582 int opsize, TCGv val, TCGv *addrp, ea_what what)
588 switch ((insn >> 3) & 7) {
589 case 0: /* Data register direct. */
591 if (what == EA_STORE) {
592 gen_partset_reg(opsize, reg, val);
595 return gen_extend(reg, opsize, what == EA_LOADS);
597 case 1: /* Address register direct. */
599 if (what == EA_STORE) {
600 tcg_gen_mov_i32(reg, val);
603 return gen_extend(reg, opsize, what == EA_LOADS);
605 case 2: /* Indirect register */
607 return gen_ldst(s, opsize, reg, val, what);
608 case 3: /* Indirect postincrement. */
610 result = gen_ldst(s, opsize, reg, val, what);
611 /* ??? This is not exception safe. The instruction may still
612 fault after this point. */
613 if (what == EA_STORE || !addrp)
614 tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize));
616 case 4: /* Indirect predecrememnt. */
619 if (addrp && what == EA_STORE) {
622 tmp = gen_lea(env, s, insn, opsize);
623 if (IS_NULL_QREG(tmp))
628 result = gen_ldst(s, opsize, tmp, val, what);
629 /* ??? This is not exception safe. The instruction may still
630 fault after this point. */
631 if (what == EA_STORE || !addrp) {
633 tcg_gen_mov_i32(reg, tmp);
637 case 5: /* Indirect displacement. */
638 case 6: /* Indirect index + displacement. */
639 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
642 case 0: /* Absolute short. */
643 case 1: /* Absolute long. */
644 case 2: /* pc displacement */
645 case 3: /* pc index+displacement. */
646 return gen_ea_once(env, s, insn, opsize, val, addrp, what);
647 case 4: /* Immediate. */
648 /* Sign extend values for consistency. */
651 if (what == EA_LOADS) {
652 offset = cpu_ldsb_code(env, s->pc + 1);
654 offset = cpu_ldub_code(env, s->pc + 1);
659 if (what == EA_LOADS) {
660 offset = cpu_ldsw_code(env, s->pc);
662 offset = cpu_lduw_code(env, s->pc);
667 offset = read_im32(env, s);
670 g_assert_not_reached();
672 return tcg_const_i32(offset);
677 /* Should never happen. */
681 /* This generates a conditional branch, clobbering all temporaries. */
682 static void gen_jmpcc(DisasContext *s, int cond, TCGLabel *l1)
686 /* TODO: Optimize compare/branch pairs rather than always flushing
687 flag state to CC_OP_FLAGS. */
695 case 2: /* HI (!C && !Z) */
696 tmp = tcg_temp_new();
697 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
698 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
700 case 3: /* LS (C || Z) */
701 tmp = tcg_temp_new();
702 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
703 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
705 case 4: /* CC (!C) */
706 tmp = tcg_temp_new();
707 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
708 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
711 tmp = tcg_temp_new();
712 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
713 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
715 case 6: /* NE (!Z) */
716 tmp = tcg_temp_new();
717 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
718 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
721 tmp = tcg_temp_new();
722 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
723 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
725 case 8: /* VC (!V) */
726 tmp = tcg_temp_new();
727 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
728 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
731 tmp = tcg_temp_new();
732 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
733 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
735 case 10: /* PL (!N) */
736 tmp = tcg_temp_new();
737 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
738 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
740 case 11: /* MI (N) */
741 tmp = tcg_temp_new();
742 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
743 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
745 case 12: /* GE (!(N ^ V)) */
746 tmp = tcg_temp_new();
747 assert(CCF_V == (CCF_N >> 2));
748 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
749 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
750 tcg_gen_andi_i32(tmp, tmp, CCF_V);
751 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
753 case 13: /* LT (N ^ V) */
754 tmp = tcg_temp_new();
755 assert(CCF_V == (CCF_N >> 2));
756 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
757 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
758 tcg_gen_andi_i32(tmp, tmp, CCF_V);
759 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
761 case 14: /* GT (!(Z || (N ^ V))) */
762 tmp = tcg_temp_new();
763 assert(CCF_V == (CCF_N >> 2));
764 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
765 tcg_gen_shri_i32(tmp, tmp, 2);
766 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
767 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
768 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
770 case 15: /* LE (Z || (N ^ V)) */
771 tmp = tcg_temp_new();
772 assert(CCF_V == (CCF_N >> 2));
773 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
774 tcg_gen_shri_i32(tmp, tmp, 2);
775 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
776 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
777 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
780 /* Should ever happen. */
791 l1 = gen_new_label();
792 cond = (insn >> 8) & 0xf;
794 tcg_gen_andi_i32(reg, reg, 0xffffff00);
795 /* This is safe because we modify the reg directly, with no other values
797 gen_jmpcc(s, cond ^ 1, l1);
798 tcg_gen_ori_i32(reg, reg, 0xff);
802 /* Force a TB lookup after an instruction that changes the CPU state. */
803 static void gen_lookup_tb(DisasContext *s)
806 tcg_gen_movi_i32(QREG_PC, s->pc);
807 s->is_jmp = DISAS_UPDATE;
810 /* Generate a jump to an immediate address. */
811 static void gen_jmp_im(DisasContext *s, uint32_t dest)
814 tcg_gen_movi_i32(QREG_PC, dest);
815 s->is_jmp = DISAS_JUMP;
818 /* Generate a jump to the address in qreg DEST. */
819 static void gen_jmp(DisasContext *s, TCGv dest)
822 tcg_gen_mov_i32(QREG_PC, dest);
823 s->is_jmp = DISAS_JUMP;
826 static void gen_exception(DisasContext *s, uint32_t where, int nr)
829 gen_jmp_im(s, where);
830 gen_helper_raise_exception(cpu_env, tcg_const_i32(nr));
833 static inline void gen_addr_fault(DisasContext *s)
835 gen_exception(s, s->insn_pc, EXCP_ADDRESS);
838 #define SRC_EA(env, result, opsize, op_sign, addrp) do { \
839 result = gen_ea(env, s, insn, opsize, NULL_QREG, addrp, \
840 op_sign ? EA_LOADS : EA_LOADU); \
841 if (IS_NULL_QREG(result)) { \
847 #define DEST_EA(env, insn, opsize, val, addrp) do { \
848 TCGv ea_result = gen_ea(env, s, insn, opsize, val, addrp, EA_STORE); \
849 if (IS_NULL_QREG(ea_result)) { \
855 /* Generate a jump to an immediate address. */
856 static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest)
858 TranslationBlock *tb;
861 if (unlikely(s->singlestep_enabled)) {
862 gen_exception(s, dest, EXCP_DEBUG);
863 } else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) ||
864 (s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
866 tcg_gen_movi_i32(QREG_PC, dest);
867 tcg_gen_exit_tb((uintptr_t)tb + n);
872 s->is_jmp = DISAS_TB_JUMP;
875 DISAS_INSN(undef_mac)
877 gen_exception(s, s->pc - 2, EXCP_LINEA);
880 DISAS_INSN(undef_fpu)
882 gen_exception(s, s->pc - 2, EXCP_LINEF);
887 M68kCPU *cpu = m68k_env_get_cpu(env);
889 gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
890 cpu_abort(CPU(cpu), "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 tcg_gen_ld_i32(AREG(insn, 0), cpu_env,
1999 offsetof(CPUM68KState, sp[M68K_USP]));
2002 DISAS_INSN(move_to_usp)
2005 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2008 tcg_gen_st_i32(AREG(insn, 0), cpu_env,
2009 offsetof(CPUM68KState, sp[M68K_USP]));
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);
2090 M68kCPU *cpu = m68k_env_get_cpu(env);
2093 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2096 /* TODO: Implement wdebug. */
2097 cpu_abort(CPU(cpu), "WDEBUG not implemented");
2102 gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf));
2105 /* ??? FP exceptions are not implemented. Most exceptions are deferred until
2106 immediately before the next FP instruction is executed. */
2120 ext = cpu_lduw_code(env, s->pc);
2122 opmode = ext & 0x7f;
2123 switch ((ext >> 13) & 7) {
2128 case 3: /* fmove out */
2130 tmp32 = tcg_temp_new_i32();
2132 /* ??? TODO: Proper behavior on overflow. */
2133 switch ((ext >> 10) & 7) {
2136 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2140 gen_helper_f64_to_f32(tmp32, cpu_env, src);
2144 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2146 case 5: /* OS_DOUBLE */
2147 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2148 switch ((insn >> 3) & 7) {
2153 tcg_gen_addi_i32(tmp32, tmp32, -8);
2156 offset = cpu_ldsw_code(env, s->pc);
2158 tcg_gen_addi_i32(tmp32, tmp32, offset);
2163 gen_store64(s, tmp32, src);
2164 switch ((insn >> 3) & 7) {
2166 tcg_gen_addi_i32(tmp32, tmp32, 8);
2167 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2170 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2173 tcg_temp_free_i32(tmp32);
2177 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2182 DEST_EA(env, insn, opsize, tmp32, NULL);
2183 tcg_temp_free_i32(tmp32);
2185 case 4: /* fmove to control register. */
2186 switch ((ext >> 10) & 7) {
2188 /* Not implemented. Ignore writes. */
2193 cpu_abort(NULL, "Unimplemented: fmove to control %d",
2197 case 5: /* fmove from control register. */
2198 switch ((ext >> 10) & 7) {
2200 /* Not implemented. Always return zero. */
2201 tmp32 = tcg_const_i32(0);
2206 cpu_abort(NULL, "Unimplemented: fmove from control %d",
2210 DEST_EA(env, insn, OS_LONG, tmp32, NULL);
2212 case 6: /* fmovem */
2218 if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0)
2220 tmp32 = gen_lea(env, s, insn, OS_LONG);
2221 if (IS_NULL_QREG(tmp32)) {
2225 addr = tcg_temp_new_i32();
2226 tcg_gen_mov_i32(addr, tmp32);
2228 for (i = 0; i < 8; i++) {
2231 if (ext & (1 << 13)) {
2233 tcg_gen_qemu_stf64(dest, addr, IS_USER(s));
2236 tcg_gen_qemu_ldf64(dest, addr, IS_USER(s));
2238 if (ext & (mask - 1))
2239 tcg_gen_addi_i32(addr, addr, 8);
2243 tcg_temp_free_i32(addr);
2247 if (ext & (1 << 14)) {
2248 /* Source effective address. */
2249 switch ((ext >> 10) & 7) {
2250 case 0: opsize = OS_LONG; break;
2251 case 1: opsize = OS_SINGLE; break;
2252 case 4: opsize = OS_WORD; break;
2253 case 5: opsize = OS_DOUBLE; break;
2254 case 6: opsize = OS_BYTE; break;
2258 if (opsize == OS_DOUBLE) {
2259 tmp32 = tcg_temp_new_i32();
2260 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2261 switch ((insn >> 3) & 7) {
2266 tcg_gen_addi_i32(tmp32, tmp32, -8);
2269 offset = cpu_ldsw_code(env, s->pc);
2271 tcg_gen_addi_i32(tmp32, tmp32, offset);
2274 offset = cpu_ldsw_code(env, s->pc);
2275 offset += s->pc - 2;
2277 tcg_gen_addi_i32(tmp32, tmp32, offset);
2282 src = gen_load64(s, tmp32);
2283 switch ((insn >> 3) & 7) {
2285 tcg_gen_addi_i32(tmp32, tmp32, 8);
2286 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2289 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2292 tcg_temp_free_i32(tmp32);
2294 SRC_EA(env, tmp32, opsize, 1, NULL);
2295 src = tcg_temp_new_i64();
2300 gen_helper_i32_to_f64(src, cpu_env, tmp32);
2303 gen_helper_f32_to_f64(src, cpu_env, tmp32);
2308 /* Source register. */
2309 src = FREG(ext, 10);
2311 dest = FREG(ext, 7);
2312 res = tcg_temp_new_i64();
2314 tcg_gen_mov_f64(res, dest);
2318 case 0: case 0x40: case 0x44: /* fmove */
2319 tcg_gen_mov_f64(res, src);
2322 gen_helper_iround_f64(res, cpu_env, src);
2325 case 3: /* fintrz */
2326 gen_helper_itrunc_f64(res, cpu_env, src);
2329 case 4: case 0x41: case 0x45: /* fsqrt */
2330 gen_helper_sqrt_f64(res, cpu_env, src);
2332 case 0x18: case 0x58: case 0x5c: /* fabs */
2333 gen_helper_abs_f64(res, src);
2335 case 0x1a: case 0x5a: case 0x5e: /* fneg */
2336 gen_helper_chs_f64(res, src);
2338 case 0x20: case 0x60: case 0x64: /* fdiv */
2339 gen_helper_div_f64(res, cpu_env, res, src);
2341 case 0x22: case 0x62: case 0x66: /* fadd */
2342 gen_helper_add_f64(res, cpu_env, res, src);
2344 case 0x23: case 0x63: case 0x67: /* fmul */
2345 gen_helper_mul_f64(res, cpu_env, res, src);
2347 case 0x28: case 0x68: case 0x6c: /* fsub */
2348 gen_helper_sub_f64(res, cpu_env, res, src);
2350 case 0x38: /* fcmp */
2351 gen_helper_sub_cmp_f64(res, cpu_env, res, src);
2355 case 0x3a: /* ftst */
2356 tcg_gen_mov_f64(res, src);
2363 if (ext & (1 << 14)) {
2364 tcg_temp_free_i64(src);
2367 if (opmode & 0x40) {
2368 if ((opmode & 0x4) != 0)
2370 } else if ((s->fpcr & M68K_FPCR_PREC) == 0) {
2375 TCGv tmp = tcg_temp_new_i32();
2376 gen_helper_f64_to_f32(tmp, cpu_env, res);
2377 gen_helper_f32_to_f64(res, cpu_env, tmp);
2378 tcg_temp_free_i32(tmp);
2380 tcg_gen_mov_f64(QREG_FP_RESULT, res);
2382 tcg_gen_mov_f64(dest, res);
2384 tcg_temp_free_i64(res);
2387 /* FIXME: Is this right for offset addressing modes? */
2389 disas_undef_fpu(env, s, insn);
2400 offset = cpu_ldsw_code(env, s->pc);
2402 if (insn & (1 << 6)) {
2403 offset = (offset << 16) | cpu_lduw_code(env, s->pc);
2407 l1 = gen_new_label();
2408 /* TODO: Raise BSUN exception. */
2409 flag = tcg_temp_new();
2410 gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT);
2411 /* Jump to l1 if condition is true. */
2412 switch (insn & 0xf) {
2415 case 1: /* eq (=0) */
2416 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2418 case 2: /* ogt (=1) */
2419 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
2421 case 3: /* oge (=0 or =1) */
2422 tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
2424 case 4: /* olt (=-1) */
2425 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
2427 case 5: /* ole (=-1 or =0) */
2428 tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
2430 case 6: /* ogl (=-1 or =1) */
2431 tcg_gen_andi_i32(flag, flag, 1);
2432 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2434 case 7: /* or (=2) */
2435 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
2437 case 8: /* un (<2) */
2438 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
2440 case 9: /* ueq (=0 or =2) */
2441 tcg_gen_andi_i32(flag, flag, 1);
2442 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2444 case 10: /* ugt (>0) */
2445 tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
2447 case 11: /* uge (>=0) */
2448 tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
2450 case 12: /* ult (=-1 or =2) */
2451 tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
2453 case 13: /* ule (!=1) */
2454 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
2456 case 14: /* ne (!=0) */
2457 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2463 gen_jmp_tb(s, 0, s->pc);
2465 gen_jmp_tb(s, 1, addr + offset);
2468 DISAS_INSN(frestore)
2470 M68kCPU *cpu = m68k_env_get_cpu(env);
2472 /* TODO: Implement frestore. */
2473 cpu_abort(CPU(cpu), "FRESTORE not implemented");
2478 M68kCPU *cpu = m68k_env_get_cpu(env);
2480 /* TODO: Implement fsave. */
2481 cpu_abort(CPU(cpu), "FSAVE not implemented");
2484 static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper)
2486 TCGv tmp = tcg_temp_new();
2487 if (s->env->macsr & MACSR_FI) {
2489 tcg_gen_andi_i32(tmp, val, 0xffff0000);
2491 tcg_gen_shli_i32(tmp, val, 16);
2492 } else if (s->env->macsr & MACSR_SU) {
2494 tcg_gen_sari_i32(tmp, val, 16);
2496 tcg_gen_ext16s_i32(tmp, val);
2499 tcg_gen_shri_i32(tmp, val, 16);
2501 tcg_gen_ext16u_i32(tmp, val);
2506 static void gen_mac_clear_flags(void)
2508 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR,
2509 ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV));
2525 s->mactmp = tcg_temp_new_i64();
2529 ext = cpu_lduw_code(env, s->pc);
2532 acc = ((insn >> 7) & 1) | ((ext >> 3) & 2);
2533 dual = ((insn & 0x30) != 0 && (ext & 3) != 0);
2534 if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
2535 disas_undef(env, s, insn);
2539 /* MAC with load. */
2540 tmp = gen_lea(env, s, insn, OS_LONG);
2541 addr = tcg_temp_new();
2542 tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK);
2543 /* Load the value now to ensure correct exception behavior.
2544 Perform writeback after reading the MAC inputs. */
2545 loadval = gen_load(s, OS_LONG, addr, 0);
2548 rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12);
2549 ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0);
2551 loadval = addr = NULL_QREG;
2552 rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2553 ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2556 gen_mac_clear_flags();
2559 /* Disabled because conditional branches clobber temporary vars. */
2560 if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
2561 /* Skip the multiply if we know we will ignore it. */
2562 l1 = gen_new_label();
2563 tmp = tcg_temp_new();
2564 tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
2565 gen_op_jmp_nz32(tmp, l1);
2569 if ((ext & 0x0800) == 0) {
2571 rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0);
2572 ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0);
2574 if (s->env->macsr & MACSR_FI) {
2575 gen_helper_macmulf(s->mactmp, cpu_env, rx, ry);
2577 if (s->env->macsr & MACSR_SU)
2578 gen_helper_macmuls(s->mactmp, cpu_env, rx, ry);
2580 gen_helper_macmulu(s->mactmp, cpu_env, rx, ry);
2581 switch ((ext >> 9) & 3) {
2583 tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
2586 tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
2592 /* Save the overflow flag from the multiply. */
2593 saved_flags = tcg_temp_new();
2594 tcg_gen_mov_i32(saved_flags, QREG_MACSR);
2596 saved_flags = NULL_QREG;
2600 /* Disabled because conditional branches clobber temporary vars. */
2601 if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
2602 /* Skip the accumulate if the value is already saturated. */
2603 l1 = gen_new_label();
2604 tmp = tcg_temp_new();
2605 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2606 gen_op_jmp_nz32(tmp, l1);
2611 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2613 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2615 if (s->env->macsr & MACSR_FI)
2616 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2617 else if (s->env->macsr & MACSR_SU)
2618 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2620 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2623 /* Disabled because conditional branches clobber temporary vars. */
2629 /* Dual accumulate variant. */
2630 acc = (ext >> 2) & 3;
2631 /* Restore the overflow flag from the multiplier. */
2632 tcg_gen_mov_i32(QREG_MACSR, saved_flags);
2634 /* Disabled because conditional branches clobber temporary vars. */
2635 if ((s->env->macsr & MACSR_OMC) != 0) {
2636 /* Skip the accumulate if the value is already saturated. */
2637 l1 = gen_new_label();
2638 tmp = tcg_temp_new();
2639 gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc));
2640 gen_op_jmp_nz32(tmp, l1);
2644 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2646 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2647 if (s->env->macsr & MACSR_FI)
2648 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2649 else if (s->env->macsr & MACSR_SU)
2650 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2652 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2654 /* Disabled because conditional branches clobber temporary vars. */
2659 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc));
2663 rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2664 tcg_gen_mov_i32(rw, loadval);
2665 /* FIXME: Should address writeback happen with the masked or
2667 switch ((insn >> 3) & 7) {
2668 case 3: /* Post-increment. */
2669 tcg_gen_addi_i32(AREG(insn, 0), addr, 4);
2671 case 4: /* Pre-decrement. */
2672 tcg_gen_mov_i32(AREG(insn, 0), addr);
2677 DISAS_INSN(from_mac)
2683 rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2684 accnum = (insn >> 9) & 3;
2685 acc = MACREG(accnum);
2686 if (s->env->macsr & MACSR_FI) {
2687 gen_helper_get_macf(rx, cpu_env, acc);
2688 } else if ((s->env->macsr & MACSR_OMC) == 0) {
2689 tcg_gen_extrl_i64_i32(rx, acc);
2690 } else if (s->env->macsr & MACSR_SU) {
2691 gen_helper_get_macs(rx, acc);
2693 gen_helper_get_macu(rx, acc);
2696 tcg_gen_movi_i64(acc, 0);
2697 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2701 DISAS_INSN(move_mac)
2703 /* FIXME: This can be done without a helper. */
2707 dest = tcg_const_i32((insn >> 9) & 3);
2708 gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src));
2709 gen_mac_clear_flags();
2710 gen_helper_mac_set_flags(cpu_env, dest);
2713 DISAS_INSN(from_macsr)
2717 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2718 tcg_gen_mov_i32(reg, QREG_MACSR);
2721 DISAS_INSN(from_mask)
2724 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2725 tcg_gen_mov_i32(reg, QREG_MAC_MASK);
2728 DISAS_INSN(from_mext)
2732 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2733 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2734 if (s->env->macsr & MACSR_FI)
2735 gen_helper_get_mac_extf(reg, cpu_env, acc);
2737 gen_helper_get_mac_exti(reg, cpu_env, acc);
2740 DISAS_INSN(macsr_to_ccr)
2742 tcg_gen_movi_i32(QREG_CC_X, 0);
2743 tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
2744 s->cc_op = CC_OP_FLAGS;
2752 accnum = (insn >> 9) & 3;
2753 acc = MACREG(accnum);
2754 SRC_EA(env, val, OS_LONG, 0, NULL);
2755 if (s->env->macsr & MACSR_FI) {
2756 tcg_gen_ext_i32_i64(acc, val);
2757 tcg_gen_shli_i64(acc, acc, 8);
2758 } else if (s->env->macsr & MACSR_SU) {
2759 tcg_gen_ext_i32_i64(acc, val);
2761 tcg_gen_extu_i32_i64(acc, val);
2763 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2764 gen_mac_clear_flags();
2765 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum));
2768 DISAS_INSN(to_macsr)
2771 SRC_EA(env, val, OS_LONG, 0, NULL);
2772 gen_helper_set_macsr(cpu_env, val);
2779 SRC_EA(env, val, OS_LONG, 0, NULL);
2780 tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
2787 SRC_EA(env, val, OS_LONG, 0, NULL);
2788 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2789 if (s->env->macsr & MACSR_FI)
2790 gen_helper_set_mac_extf(cpu_env, val, acc);
2791 else if (s->env->macsr & MACSR_SU)
2792 gen_helper_set_mac_exts(cpu_env, val, acc);
2794 gen_helper_set_mac_extu(cpu_env, val, acc);
2797 static disas_proc opcode_table[65536];
2800 register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask)
2806 /* Sanity check. All set bits must be included in the mask. */
2807 if (opcode & ~mask) {
2809 "qemu internal error: bogus opcode definition %04x/%04x\n",
2813 /* This could probably be cleverer. For now just optimize the case where
2814 the top bits are known. */
2815 /* Find the first zero bit in the mask. */
2817 while ((i & mask) != 0)
2819 /* Iterate over all combinations of this and lower bits. */
2824 from = opcode & ~(i - 1);
2826 for (i = from; i < to; i++) {
2827 if ((i & mask) == opcode)
2828 opcode_table[i] = proc;
2832 /* Register m68k opcode handlers. Order is important.
2833 Later insn override earlier ones. */
2834 void register_m68k_insns (CPUM68KState *env)
2836 #define INSN(name, opcode, mask, feature) do { \
2837 if (m68k_feature(env, M68K_FEATURE_##feature)) \
2838 register_opcode(disas_##name, 0x##opcode, 0x##mask); \
2840 INSN(undef, 0000, 0000, CF_ISA_A);
2841 INSN(arith_im, 0080, fff8, CF_ISA_A);
2842 INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
2843 INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
2844 INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
2845 INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
2846 INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
2847 INSN(arith_im, 0280, fff8, CF_ISA_A);
2848 INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
2849 INSN(arith_im, 0480, fff8, CF_ISA_A);
2850 INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
2851 INSN(arith_im, 0680, fff8, CF_ISA_A);
2852 INSN(bitop_im, 0800, ffc0, CF_ISA_A);
2853 INSN(bitop_im, 0840, ffc0, CF_ISA_A);
2854 INSN(bitop_im, 0880, ffc0, CF_ISA_A);
2855 INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
2856 INSN(arith_im, 0a80, fff8, CF_ISA_A);
2857 INSN(arith_im, 0c00, ff38, CF_ISA_A);
2858 INSN(move, 1000, f000, CF_ISA_A);
2859 INSN(move, 2000, f000, CF_ISA_A);
2860 INSN(move, 3000, f000, CF_ISA_A);
2861 INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC);
2862 INSN(negx, 4080, fff8, CF_ISA_A);
2863 INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
2864 INSN(lea, 41c0, f1c0, CF_ISA_A);
2865 INSN(clr, 4200, ff00, CF_ISA_A);
2866 INSN(undef, 42c0, ffc0, CF_ISA_A);
2867 INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
2868 INSN(neg, 4480, fff8, CF_ISA_A);
2869 INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
2870 INSN(not, 4680, fff8, CF_ISA_A);
2871 INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
2872 INSN(pea, 4840, ffc0, CF_ISA_A);
2873 INSN(swap, 4840, fff8, CF_ISA_A);
2874 INSN(movem, 48c0, fbc0, CF_ISA_A);
2875 INSN(ext, 4880, fff8, CF_ISA_A);
2876 INSN(ext, 48c0, fff8, CF_ISA_A);
2877 INSN(ext, 49c0, fff8, CF_ISA_A);
2878 INSN(tst, 4a00, ff00, CF_ISA_A);
2879 INSN(tas, 4ac0, ffc0, CF_ISA_B);
2880 INSN(halt, 4ac8, ffff, CF_ISA_A);
2881 INSN(pulse, 4acc, ffff, CF_ISA_A);
2882 INSN(illegal, 4afc, ffff, CF_ISA_A);
2883 INSN(mull, 4c00, ffc0, CF_ISA_A);
2884 INSN(divl, 4c40, ffc0, CF_ISA_A);
2885 INSN(sats, 4c80, fff8, CF_ISA_B);
2886 INSN(trap, 4e40, fff0, CF_ISA_A);
2887 INSN(link, 4e50, fff8, CF_ISA_A);
2888 INSN(unlk, 4e58, fff8, CF_ISA_A);
2889 INSN(move_to_usp, 4e60, fff8, USP);
2890 INSN(move_from_usp, 4e68, fff8, USP);
2891 INSN(nop, 4e71, ffff, CF_ISA_A);
2892 INSN(stop, 4e72, ffff, CF_ISA_A);
2893 INSN(rte, 4e73, ffff, CF_ISA_A);
2894 INSN(rts, 4e75, ffff, CF_ISA_A);
2895 INSN(movec, 4e7b, ffff, CF_ISA_A);
2896 INSN(jump, 4e80, ffc0, CF_ISA_A);
2897 INSN(jump, 4ec0, ffc0, CF_ISA_A);
2898 INSN(addsubq, 5180, f1c0, CF_ISA_A);
2899 INSN(scc, 50c0, f0f8, CF_ISA_A);
2900 INSN(addsubq, 5080, f1c0, CF_ISA_A);
2901 INSN(tpf, 51f8, fff8, CF_ISA_A);
2903 /* Branch instructions. */
2904 INSN(branch, 6000, f000, CF_ISA_A);
2905 /* Disable long branch instructions, then add back the ones we want. */
2906 INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */
2907 INSN(branch, 60ff, f0ff, CF_ISA_B);
2908 INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */
2909 INSN(branch, 60ff, ffff, BRAL);
2911 INSN(moveq, 7000, f100, CF_ISA_A);
2912 INSN(mvzs, 7100, f100, CF_ISA_B);
2913 INSN(or, 8000, f000, CF_ISA_A);
2914 INSN(divw, 80c0, f0c0, CF_ISA_A);
2915 INSN(addsub, 9000, f000, CF_ISA_A);
2916 INSN(subx, 9180, f1f8, CF_ISA_A);
2917 INSN(suba, 91c0, f1c0, CF_ISA_A);
2919 INSN(undef_mac, a000, f000, CF_ISA_A);
2920 INSN(mac, a000, f100, CF_EMAC);
2921 INSN(from_mac, a180, f9b0, CF_EMAC);
2922 INSN(move_mac, a110, f9fc, CF_EMAC);
2923 INSN(from_macsr,a980, f9f0, CF_EMAC);
2924 INSN(from_mask, ad80, fff0, CF_EMAC);
2925 INSN(from_mext, ab80, fbf0, CF_EMAC);
2926 INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC);
2927 INSN(to_mac, a100, f9c0, CF_EMAC);
2928 INSN(to_macsr, a900, ffc0, CF_EMAC);
2929 INSN(to_mext, ab00, fbc0, CF_EMAC);
2930 INSN(to_mask, ad00, ffc0, CF_EMAC);
2932 INSN(mov3q, a140, f1c0, CF_ISA_B);
2933 INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
2934 INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
2935 INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
2936 INSN(cmp, b080, f1c0, CF_ISA_A);
2937 INSN(cmpa, b1c0, f1c0, CF_ISA_A);
2938 INSN(eor, b180, f1c0, CF_ISA_A);
2939 INSN(and, c000, f000, CF_ISA_A);
2940 INSN(mulw, c0c0, f0c0, CF_ISA_A);
2941 INSN(addsub, d000, f000, CF_ISA_A);
2942 INSN(addx, d180, f1f8, CF_ISA_A);
2943 INSN(adda, d1c0, f1c0, CF_ISA_A);
2944 INSN(shift_im, e080, f0f0, CF_ISA_A);
2945 INSN(shift_reg, e0a0, f0f0, CF_ISA_A);
2946 INSN(undef_fpu, f000, f000, CF_ISA_A);
2947 INSN(fpu, f200, ffc0, CF_FPU);
2948 INSN(fbcc, f280, ffc0, CF_FPU);
2949 INSN(frestore, f340, ffc0, CF_FPU);
2950 INSN(fsave, f340, ffc0, CF_FPU);
2951 INSN(intouch, f340, ffc0, CF_ISA_A);
2952 INSN(cpushl, f428, ff38, CF_ISA_A);
2953 INSN(wddata, fb00, ff00, CF_ISA_A);
2954 INSN(wdebug, fbc0, ffc0, CF_ISA_A);
2958 /* ??? Some of this implementation is not exception safe. We should always
2959 write back the result to memory before setting the condition codes. */
2960 static void disas_m68k_insn(CPUM68KState * env, DisasContext *s)
2964 insn = cpu_lduw_code(env, s->pc);
2967 opcode_table[insn](env, s, insn);
2970 /* generate intermediate code for basic block 'tb'. */
2971 void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb)
2973 M68kCPU *cpu = m68k_env_get_cpu(env);
2974 CPUState *cs = CPU(cpu);
2975 DisasContext dc1, *dc = &dc1;
2976 target_ulong pc_start;
2981 /* generate intermediate code */
2987 dc->is_jmp = DISAS_NEXT;
2989 dc->cc_op = CC_OP_DYNAMIC;
2990 dc->singlestep_enabled = cs->singlestep_enabled;
2991 dc->fpcr = env->fpcr;
2992 dc->user = (env->sr & SR_S) == 0;
2995 max_insns = tb->cflags & CF_COUNT_MASK;
2996 if (max_insns == 0) {
2997 max_insns = CF_COUNT_MASK;
2999 if (max_insns > TCG_MAX_INSNS) {
3000 max_insns = TCG_MAX_INSNS;
3005 pc_offset = dc->pc - pc_start;
3006 gen_throws_exception = NULL;
3007 tcg_gen_insn_start(dc->pc);
3010 if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {
3011 gen_exception(dc, dc->pc, EXCP_DEBUG);
3012 dc->is_jmp = DISAS_JUMP;
3013 /* The address covered by the breakpoint must be included in
3014 [tb->pc, tb->pc + tb->size) in order to for it to be
3015 properly cleared -- thus we increment the PC here so that
3016 the logic setting tb->size below does the right thing. */
3021 if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
3025 dc->insn_pc = dc->pc;
3026 disas_m68k_insn(env, dc);
3027 } while (!dc->is_jmp && !tcg_op_buf_full() &&
3028 !cs->singlestep_enabled &&
3030 (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
3031 num_insns < max_insns);
3033 if (tb->cflags & CF_LAST_IO)
3035 if (unlikely(cs->singlestep_enabled)) {
3036 /* Make sure the pc is updated, and raise a debug exception. */
3038 gen_flush_cc_op(dc);
3039 tcg_gen_movi_i32(QREG_PC, dc->pc);
3041 gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG));
3043 switch(dc->is_jmp) {
3045 gen_flush_cc_op(dc);
3046 gen_jmp_tb(dc, 0, dc->pc);
3051 gen_flush_cc_op(dc);
3052 /* indicate that the hash table must be used to find the next TB */
3056 /* nothing more to generate */
3060 gen_tb_end(tb, num_insns);
3063 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3064 qemu_log("----------------\n");
3065 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3066 log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
3070 tb->size = dc->pc - pc_start;
3071 tb->icount = num_insns;
3074 void m68k_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3077 M68kCPU *cpu = M68K_CPU(cs);
3078 CPUM68KState *env = &cpu->env;
3082 for (i = 0; i < 8; i++)
3084 u.d = env->fregs[i];
3085 cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
3086 i, env->dregs[i], i, env->aregs[i],
3087 i, u.l.upper, u.l.lower, *(double *)&u.d);
3089 cpu_fprintf (f, "PC = %08x ", env->pc);
3091 cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-',
3092 (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-',
3093 (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-');
3094 cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result);
3097 void restore_state_to_opc(CPUM68KState *env, TranslationBlock *tb,