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, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
39 //#define DEBUG_DISPATCH 1
41 /* Fake floating point. */
42 #define tcg_gen_mov_f64 tcg_gen_mov_i64
43 #define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64
44 #define tcg_gen_qemu_stf64 tcg_gen_qemu_st64
46 #define DEFO32(name, offset) static TCGv QREG_##name;
47 #define DEFO64(name, offset) static TCGv_i64 QREG_##name;
48 #define DEFF64(name, offset) static TCGv_i64 QREG_##name;
54 static TCGv_ptr cpu_env;
56 static char cpu_reg_names[3*8*3 + 5*4];
57 static TCGv cpu_dregs[8];
58 static TCGv cpu_aregs[8];
59 static TCGv_i64 cpu_fregs[8];
60 static TCGv_i64 cpu_macc[4];
62 #define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7]
63 #define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7]
64 #define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7]
65 #define MACREG(acc) cpu_macc[acc]
66 #define QREG_SP cpu_aregs[7]
68 static TCGv NULL_QREG;
69 #define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG))
70 /* Used to distinguish stores from bad addressing modes. */
71 static TCGv store_dummy;
73 #include "gen-icount.h"
75 void m68k_tcg_init(void)
80 #define DEFO32(name, offset) QREG_##name = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUState, offset), #name);
81 #define DEFO64(name, offset) QREG_##name = tcg_global_mem_new_i64(TCG_AREG0, offsetof(CPUState, offset), #name);
82 #define DEFF64(name, offset) DEFO64(name, offset)
88 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
91 for (i = 0; i < 8; i++) {
93 cpu_dregs[i] = tcg_global_mem_new(TCG_AREG0,
94 offsetof(CPUM68KState, dregs[i]), p);
97 cpu_aregs[i] = tcg_global_mem_new(TCG_AREG0,
98 offsetof(CPUM68KState, aregs[i]), p);
100 sprintf(p, "F%d", i);
101 cpu_fregs[i] = tcg_global_mem_new_i64(TCG_AREG0,
102 offsetof(CPUM68KState, fregs[i]), p);
105 for (i = 0; i < 4; i++) {
106 sprintf(p, "ACC%d", i);
107 cpu_macc[i] = tcg_global_mem_new_i64(TCG_AREG0,
108 offsetof(CPUM68KState, macc[i]), p);
112 NULL_QREG = tcg_global_mem_new(TCG_AREG0, -4, "NULL");
113 store_dummy = tcg_global_mem_new(TCG_AREG0, -8, "NULL");
119 static inline void qemu_assert(int cond, const char *msg)
122 fprintf (stderr, "badness: %s\n", msg);
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;
143 #define DISAS_JUMP_NEXT 4
145 #if defined(CONFIG_USER_ONLY)
148 #define IS_USER(s) s->user
151 /* XXX: move that elsewhere */
152 /* ??? Fix exceptions. */
153 static void *gen_throws_exception;
154 #define gen_last_qop NULL
162 typedef void (*disas_proc)(DisasContext *, uint16_t);
164 #ifdef DEBUG_DISPATCH
165 #define DISAS_INSN(name) \
166 static void real_disas_##name (DisasContext *s, uint16_t insn); \
167 static void disas_##name (DisasContext *s, uint16_t insn) { \
168 if (logfile) fprintf(logfile, "Dispatch " #name "\n"); \
169 real_disas_##name(s, insn); } \
170 static void real_disas_##name (DisasContext *s, uint16_t insn)
172 #define DISAS_INSN(name) \
173 static void disas_##name (DisasContext *s, uint16_t insn)
176 /* FIXME: Remove this. */
177 #define gen_im32(val) tcg_const_i32(val)
179 /* Generate a load from the specified address. Narrow values are
180 sign extended to full register width. */
181 static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign)
184 int index = IS_USER(s);
186 tmp = tcg_temp_new_i32();
190 tcg_gen_qemu_ld8s(tmp, addr, index);
192 tcg_gen_qemu_ld8u(tmp, addr, index);
196 tcg_gen_qemu_ld16s(tmp, addr, index);
198 tcg_gen_qemu_ld16u(tmp, addr, index);
202 tcg_gen_qemu_ld32u(tmp, addr, index);
205 qemu_assert(0, "bad load size");
207 gen_throws_exception = gen_last_qop;
211 static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr)
214 int index = IS_USER(s);
216 tmp = tcg_temp_new_i64();
217 tcg_gen_qemu_ldf64(tmp, addr, index);
218 gen_throws_exception = gen_last_qop;
222 /* Generate a store. */
223 static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val)
225 int index = IS_USER(s);
229 tcg_gen_qemu_st8(val, addr, index);
232 tcg_gen_qemu_st16(val, addr, index);
236 tcg_gen_qemu_st32(val, addr, index);
239 qemu_assert(0, "bad store size");
241 gen_throws_exception = gen_last_qop;
244 static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val)
246 int index = IS_USER(s);
248 tcg_gen_qemu_stf64(val, addr, index);
249 gen_throws_exception = gen_last_qop;
258 /* Generate an unsigned load if VAL is 0 a signed load if val is -1,
259 otherwise generate a store. */
260 static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val,
263 if (what == EA_STORE) {
264 gen_store(s, opsize, addr, val);
267 return gen_load(s, opsize, addr, what == EA_LOADS);
271 /* Read a 32-bit immediate constant. */
272 static inline uint32_t read_im32(DisasContext *s)
275 im = ((uint32_t)lduw_code(s->pc)) << 16;
277 im |= lduw_code(s->pc);
282 /* Calculate and address index. */
283 static TCGv gen_addr_index(uint16_t ext, TCGv tmp)
288 add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12);
289 if ((ext & 0x800) == 0) {
290 tcg_gen_ext16s_i32(tmp, add);
293 scale = (ext >> 9) & 3;
295 tcg_gen_shli_i32(tmp, add, scale);
301 /* Handle a base + index + displacement effective addresss.
302 A NULL_QREG base means pc-relative. */
303 static TCGv gen_lea_indexed(DisasContext *s, int opsize, TCGv base)
312 ext = lduw_code(s->pc);
315 if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX))
319 /* full extension word format */
320 if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL))
323 if ((ext & 0x30) > 0x10) {
324 /* base displacement */
325 if ((ext & 0x30) == 0x20) {
326 bd = (int16_t)lduw_code(s->pc);
334 tmp = tcg_temp_new();
335 if ((ext & 0x44) == 0) {
337 add = gen_addr_index(ext, tmp);
341 if ((ext & 0x80) == 0) {
342 /* base not suppressed */
343 if (IS_NULL_QREG(base)) {
344 base = gen_im32(offset + bd);
347 if (!IS_NULL_QREG(add)) {
348 tcg_gen_add_i32(tmp, add, base);
354 if (!IS_NULL_QREG(add)) {
356 tcg_gen_addi_i32(tmp, add, bd);
362 if ((ext & 3) != 0) {
363 /* memory indirect */
364 base = gen_load(s, OS_LONG, add, 0);
365 if ((ext & 0x44) == 4) {
366 add = gen_addr_index(ext, tmp);
367 tcg_gen_add_i32(tmp, add, base);
373 /* outer displacement */
374 if ((ext & 3) == 2) {
375 od = (int16_t)lduw_code(s->pc);
384 tcg_gen_addi_i32(tmp, add, od);
389 /* brief extension word format */
390 tmp = tcg_temp_new();
391 add = gen_addr_index(ext, tmp);
392 if (!IS_NULL_QREG(base)) {
393 tcg_gen_add_i32(tmp, add, base);
395 tcg_gen_addi_i32(tmp, tmp, (int8_t)ext);
397 tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext);
404 /* Update the CPU env CC_OP state. */
405 static inline void gen_flush_cc_op(DisasContext *s)
407 if (s->cc_op != CC_OP_DYNAMIC)
408 tcg_gen_movi_i32(QREG_CC_OP, s->cc_op);
411 /* Evaluate all the CC flags. */
412 static inline void gen_flush_flags(DisasContext *s)
414 if (s->cc_op == CC_OP_FLAGS)
417 gen_helper_flush_flags(cpu_env, QREG_CC_OP);
418 s->cc_op = CC_OP_FLAGS;
421 static void gen_logic_cc(DisasContext *s, TCGv val)
423 tcg_gen_mov_i32(QREG_CC_DEST, val);
424 s->cc_op = CC_OP_LOGIC;
427 static void gen_update_cc_add(TCGv dest, TCGv src)
429 tcg_gen_mov_i32(QREG_CC_DEST, dest);
430 tcg_gen_mov_i32(QREG_CC_SRC, src);
433 static inline int opsize_bytes(int opsize)
436 case OS_BYTE: return 1;
437 case OS_WORD: return 2;
438 case OS_LONG: return 4;
439 case OS_SINGLE: return 4;
440 case OS_DOUBLE: return 8;
442 qemu_assert(0, "bad operand size");
447 /* Assign value to a register. If the width is less than the register width
448 only the low part of the register is set. */
449 static void gen_partset_reg(int opsize, TCGv reg, TCGv val)
454 tcg_gen_andi_i32(reg, reg, 0xffffff00);
455 tmp = tcg_temp_new();
456 tcg_gen_ext8u_i32(tmp, val);
457 tcg_gen_or_i32(reg, reg, tmp);
460 tcg_gen_andi_i32(reg, reg, 0xffff0000);
461 tmp = tcg_temp_new();
462 tcg_gen_ext16u_i32(tmp, val);
463 tcg_gen_or_i32(reg, reg, tmp);
467 tcg_gen_mov_i32(reg, val);
470 qemu_assert(0, "Bad operand size");
475 /* Sign or zero extend a value. */
476 static inline TCGv gen_extend(TCGv val, int opsize, int sign)
482 tmp = tcg_temp_new();
484 tcg_gen_ext8s_i32(tmp, val);
486 tcg_gen_ext8u_i32(tmp, val);
489 tmp = tcg_temp_new();
491 tcg_gen_ext16s_i32(tmp, val);
493 tcg_gen_ext16u_i32(tmp, val);
500 qemu_assert(0, "Bad operand size");
505 /* Generate code for an "effective address". Does not adjust the base
506 register for autoincrement addressing modes. */
507 static TCGv gen_lea(DisasContext *s, uint16_t insn, int opsize)
514 switch ((insn >> 3) & 7) {
515 case 0: /* Data register direct. */
516 case 1: /* Address register direct. */
518 case 2: /* Indirect register */
519 case 3: /* Indirect postincrement. */
520 return AREG(insn, 0);
521 case 4: /* Indirect predecrememnt. */
523 tmp = tcg_temp_new();
524 tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize));
526 case 5: /* Indirect displacement. */
528 tmp = tcg_temp_new();
529 ext = lduw_code(s->pc);
531 tcg_gen_addi_i32(tmp, reg, (int16_t)ext);
533 case 6: /* Indirect index + displacement. */
535 return gen_lea_indexed(s, opsize, reg);
538 case 0: /* Absolute short. */
539 offset = ldsw_code(s->pc);
541 return gen_im32(offset);
542 case 1: /* Absolute long. */
543 offset = read_im32(s);
544 return gen_im32(offset);
545 case 2: /* pc displacement */
546 tmp = tcg_temp_new();
548 offset += ldsw_code(s->pc);
550 return gen_im32(offset);
551 case 3: /* pc index+displacement. */
552 return gen_lea_indexed(s, opsize, NULL_QREG);
553 case 4: /* Immediate. */
558 /* Should never happen. */
562 /* Helper function for gen_ea. Reuse the computed address between the
563 for read/write operands. */
564 static inline TCGv gen_ea_once(DisasContext *s, uint16_t insn, int opsize,
565 TCGv val, TCGv *addrp, ea_what what)
569 if (addrp && what == EA_STORE) {
572 tmp = gen_lea(s, insn, opsize);
573 if (IS_NULL_QREG(tmp))
578 return gen_ldst(s, opsize, tmp, val, what);
581 /* Generate code to load/store a value ito/from an EA. If VAL > 0 this is
582 a write otherwise it is a read (0 == sign extend, -1 == zero extend).
583 ADDRP is non-null for readwrite operands. */
584 static TCGv gen_ea(DisasContext *s, uint16_t insn, int opsize, TCGv val,
585 TCGv *addrp, ea_what what)
591 switch ((insn >> 3) & 7) {
592 case 0: /* Data register direct. */
594 if (what == EA_STORE) {
595 gen_partset_reg(opsize, reg, val);
598 return gen_extend(reg, opsize, what == EA_LOADS);
600 case 1: /* Address register direct. */
602 if (what == EA_STORE) {
603 tcg_gen_mov_i32(reg, val);
606 return gen_extend(reg, opsize, what == EA_LOADS);
608 case 2: /* Indirect register */
610 return gen_ldst(s, opsize, reg, val, what);
611 case 3: /* Indirect postincrement. */
613 result = gen_ldst(s, opsize, reg, val, what);
614 /* ??? This is not exception safe. The instruction may still
615 fault after this point. */
616 if (what == EA_STORE || !addrp)
617 tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize));
619 case 4: /* Indirect predecrememnt. */
622 if (addrp && what == EA_STORE) {
625 tmp = gen_lea(s, insn, opsize);
626 if (IS_NULL_QREG(tmp))
631 result = gen_ldst(s, opsize, tmp, val, what);
632 /* ??? This is not exception safe. The instruction may still
633 fault after this point. */
634 if (what == EA_STORE || !addrp) {
636 tcg_gen_mov_i32(reg, tmp);
640 case 5: /* Indirect displacement. */
641 case 6: /* Indirect index + displacement. */
642 return gen_ea_once(s, insn, opsize, val, addrp, what);
645 case 0: /* Absolute short. */
646 case 1: /* Absolute long. */
647 case 2: /* pc displacement */
648 case 3: /* pc index+displacement. */
649 return gen_ea_once(s, insn, opsize, val, addrp, what);
650 case 4: /* Immediate. */
651 /* Sign extend values for consistency. */
654 if (what == EA_LOADS)
655 offset = ldsb_code(s->pc + 1);
657 offset = ldub_code(s->pc + 1);
661 if (what == EA_LOADS)
662 offset = ldsw_code(s->pc);
664 offset = lduw_code(s->pc);
668 offset = read_im32(s);
671 qemu_assert(0, "Bad immediate operand");
673 return tcg_const_i32(offset);
678 /* Should never happen. */
682 /* This generates a conditional branch, clobbering all temporaries. */
683 static void gen_jmpcc(DisasContext *s, int cond, int l1)
687 /* TODO: Optimize compare/branch pairs rather than always flushing
688 flag state to CC_OP_FLAGS. */
696 case 2: /* HI (!C && !Z) */
697 tmp = tcg_temp_new();
698 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
699 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
701 case 3: /* LS (C || Z) */
702 tmp = tcg_temp_new();
703 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z);
704 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
706 case 4: /* CC (!C) */
707 tmp = tcg_temp_new();
708 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
709 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
712 tmp = tcg_temp_new();
713 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C);
714 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
716 case 6: /* NE (!Z) */
717 tmp = tcg_temp_new();
718 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
719 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
722 tmp = tcg_temp_new();
723 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z);
724 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
726 case 8: /* VC (!V) */
727 tmp = tcg_temp_new();
728 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
729 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
732 tmp = tcg_temp_new();
733 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V);
734 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
736 case 10: /* PL (!N) */
737 tmp = tcg_temp_new();
738 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
739 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
741 case 11: /* MI (N) */
742 tmp = tcg_temp_new();
743 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
744 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
746 case 12: /* GE (!(N ^ V)) */
747 tmp = tcg_temp_new();
748 assert(CCF_V == (CCF_N >> 2));
749 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
750 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
751 tcg_gen_andi_i32(tmp, tmp, CCF_V);
752 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
754 case 13: /* LT (N ^ V) */
755 tmp = tcg_temp_new();
756 assert(CCF_V == (CCF_N >> 2));
757 tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2);
758 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
759 tcg_gen_andi_i32(tmp, tmp, CCF_V);
760 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
762 case 14: /* GT (!(Z || (N ^ V))) */
763 tmp = tcg_temp_new();
764 assert(CCF_V == (CCF_N >> 2));
765 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
766 tcg_gen_shri_i32(tmp, tmp, 2);
767 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
768 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
769 tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1);
771 case 15: /* LE (Z || (N ^ V)) */
772 tmp = tcg_temp_new();
773 assert(CCF_V == (CCF_N >> 2));
774 tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N);
775 tcg_gen_shri_i32(tmp, tmp, 2);
776 tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST);
777 tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z);
778 tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1);
781 /* Should ever happen. */
792 l1 = gen_new_label();
793 cond = (insn >> 8) & 0xf;
795 tcg_gen_andi_i32(reg, reg, 0xffffff00);
796 /* This is safe because we modify the reg directly, with no other values
798 gen_jmpcc(s, cond ^ 1, l1);
799 tcg_gen_ori_i32(reg, reg, 0xff);
803 /* Force a TB lookup after an instruction that changes the CPU state. */
804 static void gen_lookup_tb(DisasContext *s)
807 tcg_gen_movi_i32(QREG_PC, s->pc);
808 s->is_jmp = DISAS_UPDATE;
811 /* Generate a jump to an immediate address. */
812 static void gen_jmp_im(DisasContext *s, uint32_t dest)
815 tcg_gen_movi_i32(QREG_PC, dest);
816 s->is_jmp = DISAS_JUMP;
819 /* Generate a jump to the address in qreg DEST. */
820 static void gen_jmp(DisasContext *s, TCGv dest)
823 tcg_gen_mov_i32(QREG_PC, dest);
824 s->is_jmp = DISAS_JUMP;
827 static void gen_exception(DisasContext *s, uint32_t where, int nr)
830 gen_jmp_im(s, where);
831 gen_helper_raise_exception(tcg_const_i32(nr));
834 static inline void gen_addr_fault(DisasContext *s)
836 gen_exception(s, s->insn_pc, EXCP_ADDRESS);
839 #define SRC_EA(result, opsize, op_sign, addrp) do { \
840 result = gen_ea(s, insn, opsize, NULL_QREG, addrp, op_sign ? EA_LOADS : EA_LOADU); \
841 if (IS_NULL_QREG(result)) { \
847 #define DEST_EA(insn, opsize, val, addrp) do { \
848 TCGv ea_result = gen_ea(s, insn, opsize, val, addrp, EA_STORE); \
849 if (IS_NULL_QREG(ea_result)) { \
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((long)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 gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED);
888 cpu_abort(cpu_single_env, "Illegal instruction: %04x @ %08x",
899 sign = (insn & 0x100) != 0;
901 tmp = tcg_temp_new();
903 tcg_gen_ext16s_i32(tmp, reg);
905 tcg_gen_ext16u_i32(tmp, reg);
906 SRC_EA(src, OS_WORD, sign, NULL);
907 tcg_gen_mul_i32(tmp, tmp, src);
908 tcg_gen_mov_i32(reg, tmp);
909 /* Unlike m68k, coldfire always clears the overflow bit. */
910 gen_logic_cc(s, tmp);
920 sign = (insn & 0x100) != 0;
923 tcg_gen_ext16s_i32(QREG_DIV1, reg);
925 tcg_gen_ext16u_i32(QREG_DIV1, reg);
927 SRC_EA(src, OS_WORD, sign, NULL);
928 tcg_gen_mov_i32(QREG_DIV2, src);
930 gen_helper_divs(cpu_env, tcg_const_i32(1));
932 gen_helper_divu(cpu_env, tcg_const_i32(1));
935 tmp = tcg_temp_new();
936 src = tcg_temp_new();
937 tcg_gen_ext16u_i32(tmp, QREG_DIV1);
938 tcg_gen_shli_i32(src, QREG_DIV2, 16);
939 tcg_gen_or_i32(reg, tmp, src);
940 s->cc_op = CC_OP_FLAGS;
950 ext = lduw_code(s->pc);
953 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
958 tcg_gen_mov_i32(QREG_DIV1, num);
959 SRC_EA(den, OS_LONG, 0, NULL);
960 tcg_gen_mov_i32(QREG_DIV2, den);
962 gen_helper_divs(cpu_env, tcg_const_i32(0));
964 gen_helper_divu(cpu_env, tcg_const_i32(0));
966 if ((ext & 7) == ((ext >> 12) & 7)) {
968 tcg_gen_mov_i32 (reg, QREG_DIV1);
971 tcg_gen_mov_i32 (reg, QREG_DIV2);
973 s->cc_op = CC_OP_FLAGS;
985 add = (insn & 0x4000) != 0;
987 dest = tcg_temp_new();
989 SRC_EA(tmp, OS_LONG, 0, &addr);
993 SRC_EA(src, OS_LONG, 0, NULL);
996 tcg_gen_add_i32(dest, tmp, src);
997 gen_helper_xflag_lt(QREG_CC_X, dest, src);
998 s->cc_op = CC_OP_ADD;
1000 gen_helper_xflag_lt(QREG_CC_X, tmp, src);
1001 tcg_gen_sub_i32(dest, tmp, src);
1002 s->cc_op = CC_OP_SUB;
1004 gen_update_cc_add(dest, src);
1006 DEST_EA(insn, OS_LONG, dest, &addr);
1008 tcg_gen_mov_i32(reg, dest);
1013 /* Reverse the order of the bits in REG. */
1017 reg = DREG(insn, 0);
1018 gen_helper_bitrev(reg, reg);
1021 DISAS_INSN(bitop_reg)
1031 if ((insn & 0x38) != 0)
1035 op = (insn >> 6) & 3;
1036 SRC_EA(src1, opsize, 0, op ? &addr: NULL);
1037 src2 = DREG(insn, 9);
1038 dest = tcg_temp_new();
1041 tmp = tcg_temp_new();
1042 if (opsize == OS_BYTE)
1043 tcg_gen_andi_i32(tmp, src2, 7);
1045 tcg_gen_andi_i32(tmp, src2, 31);
1047 tmp = tcg_temp_new();
1048 tcg_gen_shr_i32(tmp, src1, src2);
1049 tcg_gen_andi_i32(tmp, tmp, 1);
1050 tcg_gen_shli_i32(tmp, tmp, 2);
1051 /* Clear CCF_Z if bit set. */
1052 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1053 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1055 tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2);
1058 tcg_gen_xor_i32(dest, src1, tmp);
1061 tcg_gen_not_i32(tmp, tmp);
1062 tcg_gen_and_i32(dest, src1, tmp);
1065 tcg_gen_or_i32(dest, src1, tmp);
1071 DEST_EA(insn, opsize, dest, &addr);
1077 reg = DREG(insn, 0);
1079 gen_helper_sats(reg, reg, QREG_CC_DEST);
1080 gen_logic_cc(s, reg);
1083 static void gen_push(DisasContext *s, TCGv val)
1087 tmp = tcg_temp_new();
1088 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1089 gen_store(s, OS_LONG, tmp, val);
1090 tcg_gen_mov_i32(QREG_SP, tmp);
1102 mask = lduw_code(s->pc);
1104 tmp = gen_lea(s, insn, OS_LONG);
1105 if (IS_NULL_QREG(tmp)) {
1109 addr = tcg_temp_new();
1110 tcg_gen_mov_i32(addr, tmp);
1111 is_load = ((insn & 0x0400) != 0);
1112 for (i = 0; i < 16; i++, mask >>= 1) {
1119 tmp = gen_load(s, OS_LONG, addr, 0);
1120 tcg_gen_mov_i32(reg, tmp);
1122 gen_store(s, OS_LONG, addr, reg);
1125 tcg_gen_addi_i32(addr, addr, 4);
1130 DISAS_INSN(bitop_im)
1140 if ((insn & 0x38) != 0)
1144 op = (insn >> 6) & 3;
1146 bitnum = lduw_code(s->pc);
1148 if (bitnum & 0xff00) {
1149 disas_undef(s, insn);
1153 SRC_EA(src1, opsize, 0, op ? &addr: NULL);
1156 if (opsize == OS_BYTE)
1162 tmp = tcg_temp_new();
1163 assert (CCF_Z == (1 << 2));
1165 tcg_gen_shri_i32(tmp, src1, bitnum - 2);
1166 else if (bitnum < 2)
1167 tcg_gen_shli_i32(tmp, src1, 2 - bitnum);
1169 tcg_gen_mov_i32(tmp, src1);
1170 tcg_gen_andi_i32(tmp, tmp, CCF_Z);
1171 /* Clear CCF_Z if bit set. */
1172 tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z);
1173 tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp);
1177 tcg_gen_xori_i32(tmp, src1, mask);
1180 tcg_gen_andi_i32(tmp, src1, ~mask);
1183 tcg_gen_ori_i32(tmp, src1, mask);
1188 DEST_EA(insn, opsize, tmp, &addr);
1192 DISAS_INSN(arith_im)
1200 op = (insn >> 9) & 7;
1201 SRC_EA(src1, OS_LONG, 0, (op == 6) ? NULL : &addr);
1203 dest = tcg_temp_new();
1206 tcg_gen_ori_i32(dest, src1, im);
1207 gen_logic_cc(s, dest);
1210 tcg_gen_andi_i32(dest, src1, im);
1211 gen_logic_cc(s, dest);
1214 tcg_gen_mov_i32(dest, src1);
1215 gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im));
1216 tcg_gen_subi_i32(dest, dest, im);
1217 gen_update_cc_add(dest, gen_im32(im));
1218 s->cc_op = CC_OP_SUB;
1221 tcg_gen_mov_i32(dest, src1);
1222 tcg_gen_addi_i32(dest, dest, im);
1223 gen_update_cc_add(dest, gen_im32(im));
1224 gen_helper_xflag_lt(QREG_CC_X, dest, gen_im32(im));
1225 s->cc_op = CC_OP_ADD;
1228 tcg_gen_xori_i32(dest, src1, im);
1229 gen_logic_cc(s, dest);
1232 tcg_gen_mov_i32(dest, src1);
1233 tcg_gen_subi_i32(dest, dest, im);
1234 gen_update_cc_add(dest, gen_im32(im));
1235 s->cc_op = CC_OP_SUB;
1241 DEST_EA(insn, OS_LONG, dest, &addr);
1249 reg = DREG(insn, 0);
1250 tcg_gen_bswap_i32(reg, reg);
1260 switch (insn >> 12) {
1261 case 1: /* move.b */
1264 case 2: /* move.l */
1267 case 3: /* move.w */
1273 SRC_EA(src, opsize, 1, NULL);
1274 op = (insn >> 6) & 7;
1277 /* The value will already have been sign extended. */
1278 dest = AREG(insn, 9);
1279 tcg_gen_mov_i32(dest, src);
1283 dest_ea = ((insn >> 9) & 7) | (op << 3);
1284 DEST_EA(dest_ea, opsize, src, NULL);
1285 /* This will be correct because loads sign extend. */
1286 gen_logic_cc(s, src);
1295 reg = DREG(insn, 0);
1296 gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg);
1304 reg = AREG(insn, 9);
1305 tmp = gen_lea(s, insn, OS_LONG);
1306 if (IS_NULL_QREG(tmp)) {
1310 tcg_gen_mov_i32(reg, tmp);
1317 switch ((insn >> 6) & 3) {
1330 DEST_EA(insn, opsize, gen_im32(0), NULL);
1331 gen_logic_cc(s, gen_im32(0));
1334 static TCGv gen_get_ccr(DisasContext *s)
1339 dest = tcg_temp_new();
1340 tcg_gen_shli_i32(dest, QREG_CC_X, 4);
1341 tcg_gen_or_i32(dest, dest, QREG_CC_DEST);
1345 DISAS_INSN(move_from_ccr)
1350 ccr = gen_get_ccr(s);
1351 reg = DREG(insn, 0);
1352 gen_partset_reg(OS_WORD, reg, ccr);
1360 reg = DREG(insn, 0);
1361 src1 = tcg_temp_new();
1362 tcg_gen_mov_i32(src1, reg);
1363 tcg_gen_neg_i32(reg, src1);
1364 s->cc_op = CC_OP_SUB;
1365 gen_update_cc_add(reg, src1);
1366 gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
1367 s->cc_op = CC_OP_SUB;
1370 static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only)
1372 tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf);
1373 tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4);
1375 gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00));
1379 static void gen_set_sr(DisasContext *s, uint16_t insn, int ccr_only)
1384 s->cc_op = CC_OP_FLAGS;
1385 if ((insn & 0x38) == 0)
1387 tmp = tcg_temp_new();
1388 reg = DREG(insn, 0);
1389 tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf);
1390 tcg_gen_shri_i32(tmp, reg, 4);
1391 tcg_gen_andi_i32(QREG_CC_X, tmp, 1);
1393 gen_helper_set_sr(cpu_env, reg);
1396 else if ((insn & 0x3f) == 0x3c)
1399 val = lduw_code(s->pc);
1401 gen_set_sr_im(s, val, ccr_only);
1404 disas_undef(s, insn);
1407 DISAS_INSN(move_to_ccr)
1409 gen_set_sr(s, insn, 1);
1416 reg = DREG(insn, 0);
1417 tcg_gen_not_i32(reg, reg);
1418 gen_logic_cc(s, reg);
1427 src1 = tcg_temp_new();
1428 src2 = tcg_temp_new();
1429 reg = DREG(insn, 0);
1430 tcg_gen_shli_i32(src1, reg, 16);
1431 tcg_gen_shri_i32(src2, reg, 16);
1432 tcg_gen_or_i32(reg, src1, src2);
1433 gen_logic_cc(s, reg);
1440 tmp = gen_lea(s, insn, OS_LONG);
1441 if (IS_NULL_QREG(tmp)) {
1454 reg = DREG(insn, 0);
1455 op = (insn >> 6) & 7;
1456 tmp = tcg_temp_new();
1458 tcg_gen_ext16s_i32(tmp, reg);
1460 tcg_gen_ext8s_i32(tmp, reg);
1462 gen_partset_reg(OS_WORD, reg, tmp);
1464 tcg_gen_mov_i32(reg, tmp);
1465 gen_logic_cc(s, tmp);
1473 switch ((insn >> 6) & 3) {
1486 SRC_EA(tmp, opsize, 1, NULL);
1487 gen_logic_cc(s, tmp);
1492 /* Implemented as a NOP. */
1497 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
1500 /* ??? This should be atomic. */
1507 dest = tcg_temp_new();
1508 SRC_EA(src1, OS_BYTE, 1, &addr);
1509 gen_logic_cc(s, src1);
1510 tcg_gen_ori_i32(dest, src1, 0x80);
1511 DEST_EA(insn, OS_BYTE, dest, &addr);
1521 /* The upper 32 bits of the product are discarded, so
1522 muls.l and mulu.l are functionally equivalent. */
1523 ext = lduw_code(s->pc);
1526 gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED);
1529 reg = DREG(ext, 12);
1530 SRC_EA(src1, OS_LONG, 0, NULL);
1531 dest = tcg_temp_new();
1532 tcg_gen_mul_i32(dest, src1, reg);
1533 tcg_gen_mov_i32(reg, dest);
1534 /* Unlike m68k, coldfire always clears the overflow bit. */
1535 gen_logic_cc(s, dest);
1544 offset = ldsw_code(s->pc);
1546 reg = AREG(insn, 0);
1547 tmp = tcg_temp_new();
1548 tcg_gen_subi_i32(tmp, QREG_SP, 4);
1549 gen_store(s, OS_LONG, tmp, reg);
1550 if ((insn & 7) != 7)
1551 tcg_gen_mov_i32(reg, tmp);
1552 tcg_gen_addi_i32(QREG_SP, tmp, offset);
1561 src = tcg_temp_new();
1562 reg = AREG(insn, 0);
1563 tcg_gen_mov_i32(src, reg);
1564 tmp = gen_load(s, OS_LONG, src, 0);
1565 tcg_gen_mov_i32(reg, tmp);
1566 tcg_gen_addi_i32(QREG_SP, src, 4);
1577 tmp = gen_load(s, OS_LONG, QREG_SP, 0);
1578 tcg_gen_addi_i32(QREG_SP, QREG_SP, 4);
1586 /* Load the target address first to ensure correct exception
1588 tmp = gen_lea(s, insn, OS_LONG);
1589 if (IS_NULL_QREG(tmp)) {
1593 if ((insn & 0x40) == 0) {
1595 gen_push(s, gen_im32(s->pc));
1608 SRC_EA(src1, OS_LONG, 0, &addr);
1609 val = (insn >> 9) & 7;
1612 dest = tcg_temp_new();
1613 tcg_gen_mov_i32(dest, src1);
1614 if ((insn & 0x38) == 0x08) {
1615 /* Don't update condition codes if the destination is an
1616 address register. */
1617 if (insn & 0x0100) {
1618 tcg_gen_subi_i32(dest, dest, val);
1620 tcg_gen_addi_i32(dest, dest, val);
1623 src2 = gen_im32(val);
1624 if (insn & 0x0100) {
1625 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1626 tcg_gen_subi_i32(dest, dest, val);
1627 s->cc_op = CC_OP_SUB;
1629 tcg_gen_addi_i32(dest, dest, val);
1630 gen_helper_xflag_lt(QREG_CC_X, dest, src2);
1631 s->cc_op = CC_OP_ADD;
1633 gen_update_cc_add(dest, src2);
1635 DEST_EA(insn, OS_LONG, dest, &addr);
1641 case 2: /* One extension word. */
1644 case 3: /* Two extension words. */
1647 case 4: /* No extension words. */
1650 disas_undef(s, insn);
1662 op = (insn >> 8) & 0xf;
1663 offset = (int8_t)insn;
1665 offset = ldsw_code(s->pc);
1667 } else if (offset == -1) {
1668 offset = read_im32(s);
1672 gen_push(s, gen_im32(s->pc));
1677 l1 = gen_new_label();
1678 gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1);
1679 gen_jmp_tb(s, 1, base + offset);
1681 gen_jmp_tb(s, 0, s->pc);
1683 /* Unconditional branch. */
1684 gen_jmp_tb(s, 0, base + offset);
1693 tcg_gen_movi_i32(DREG(insn, 9), val);
1694 gen_logic_cc(s, tcg_const_i32(val));
1707 SRC_EA(src, opsize, (insn & 0x80) == 0, NULL);
1708 reg = DREG(insn, 9);
1709 tcg_gen_mov_i32(reg, src);
1710 gen_logic_cc(s, src);
1720 reg = DREG(insn, 9);
1721 dest = tcg_temp_new();
1723 SRC_EA(src, OS_LONG, 0, &addr);
1724 tcg_gen_or_i32(dest, src, reg);
1725 DEST_EA(insn, OS_LONG, dest, &addr);
1727 SRC_EA(src, OS_LONG, 0, NULL);
1728 tcg_gen_or_i32(dest, src, reg);
1729 tcg_gen_mov_i32(reg, dest);
1731 gen_logic_cc(s, dest);
1739 SRC_EA(src, OS_LONG, 0, NULL);
1740 reg = AREG(insn, 9);
1741 tcg_gen_sub_i32(reg, reg, src);
1750 reg = DREG(insn, 9);
1751 src = DREG(insn, 0);
1752 gen_helper_subx_cc(reg, cpu_env, reg, src);
1760 val = (insn >> 9) & 7;
1763 src = gen_im32(val);
1764 gen_logic_cc(s, src);
1765 DEST_EA(insn, OS_LONG, src, NULL);
1776 op = (insn >> 6) & 3;
1780 s->cc_op = CC_OP_CMPB;
1784 s->cc_op = CC_OP_CMPW;
1788 s->cc_op = CC_OP_SUB;
1793 SRC_EA(src, opsize, 1, NULL);
1794 reg = DREG(insn, 9);
1795 dest = tcg_temp_new();
1796 tcg_gen_sub_i32(dest, reg, src);
1797 gen_update_cc_add(dest, src);
1812 SRC_EA(src, opsize, 1, NULL);
1813 reg = AREG(insn, 9);
1814 dest = tcg_temp_new();
1815 tcg_gen_sub_i32(dest, reg, src);
1816 gen_update_cc_add(dest, src);
1817 s->cc_op = CC_OP_SUB;
1827 SRC_EA(src, OS_LONG, 0, &addr);
1828 reg = DREG(insn, 9);
1829 dest = tcg_temp_new();
1830 tcg_gen_xor_i32(dest, src, reg);
1831 gen_logic_cc(s, dest);
1832 DEST_EA(insn, OS_LONG, dest, &addr);
1842 reg = DREG(insn, 9);
1843 dest = tcg_temp_new();
1845 SRC_EA(src, OS_LONG, 0, &addr);
1846 tcg_gen_and_i32(dest, src, reg);
1847 DEST_EA(insn, OS_LONG, dest, &addr);
1849 SRC_EA(src, OS_LONG, 0, NULL);
1850 tcg_gen_and_i32(dest, src, reg);
1851 tcg_gen_mov_i32(reg, dest);
1853 gen_logic_cc(s, dest);
1861 SRC_EA(src, OS_LONG, 0, NULL);
1862 reg = AREG(insn, 9);
1863 tcg_gen_add_i32(reg, reg, src);
1872 reg = DREG(insn, 9);
1873 src = DREG(insn, 0);
1874 gen_helper_addx_cc(reg, cpu_env, reg, src);
1875 s->cc_op = CC_OP_FLAGS;
1878 /* TODO: This could be implemented without helper functions. */
1879 DISAS_INSN(shift_im)
1885 reg = DREG(insn, 0);
1886 tmp = (insn >> 9) & 7;
1889 shift = gen_im32(tmp);
1890 /* No need to flush flags becuse we know we will set C flag. */
1892 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1895 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1897 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1900 s->cc_op = CC_OP_SHIFT;
1903 DISAS_INSN(shift_reg)
1908 reg = DREG(insn, 0);
1909 shift = DREG(insn, 9);
1910 /* Shift by zero leaves C flag unmodified. */
1913 gen_helper_shl_cc(reg, cpu_env, reg, shift);
1916 gen_helper_shr_cc(reg, cpu_env, reg, shift);
1918 gen_helper_sar_cc(reg, cpu_env, reg, shift);
1921 s->cc_op = CC_OP_SHIFT;
1927 reg = DREG(insn, 0);
1928 gen_logic_cc(s, reg);
1929 gen_helper_ff1(reg, reg);
1932 static TCGv gen_get_sr(DisasContext *s)
1937 ccr = gen_get_ccr(s);
1938 sr = tcg_temp_new();
1939 tcg_gen_andi_i32(sr, QREG_SR, 0xffe0);
1940 tcg_gen_or_i32(sr, sr, ccr);
1950 ext = lduw_code(s->pc);
1952 if (ext != 0x46FC) {
1953 gen_exception(s, addr, EXCP_UNSUPPORTED);
1956 ext = lduw_code(s->pc);
1958 if (IS_USER(s) || (ext & SR_S) == 0) {
1959 gen_exception(s, addr, EXCP_PRIVILEGE);
1962 gen_push(s, gen_get_sr(s));
1963 gen_set_sr_im(s, ext, 0);
1966 DISAS_INSN(move_from_sr)
1972 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1976 reg = DREG(insn, 0);
1977 gen_partset_reg(OS_WORD, reg, sr);
1980 DISAS_INSN(move_to_sr)
1983 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1986 gen_set_sr(s, insn, 0);
1990 DISAS_INSN(move_from_usp)
1993 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
1996 /* TODO: Implement USP. */
1997 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
2000 DISAS_INSN(move_to_usp)
2003 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2006 /* TODO: Implement USP. */
2007 gen_exception(s, s->pc - 2, EXCP_ILLEGAL);
2012 gen_exception(s, s->pc, EXCP_HALT_INSN);
2020 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2024 ext = lduw_code(s->pc);
2027 gen_set_sr_im(s, ext, 0);
2028 tcg_gen_movi_i32(QREG_HALTED, 1);
2029 gen_exception(s, s->pc, EXCP_HLT);
2035 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2038 gen_exception(s, s->pc - 2, EXCP_RTE);
2047 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2051 ext = lduw_code(s->pc);
2055 reg = AREG(ext, 12);
2057 reg = DREG(ext, 12);
2059 gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg);
2066 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2069 /* ICache fetch. Implement as no-op. */
2075 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2078 /* Cache push/invalidate. Implement as no-op. */
2083 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2089 gen_exception(s, s->pc - 2, EXCP_PRIVILEGE);
2092 /* TODO: Implement wdebug. */
2093 qemu_assert(0, "WDEBUG not implemented");
2098 gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf));
2101 /* ??? FP exceptions are not implemented. Most exceptions are deferred until
2102 immediately before the next FP instruction is executed. */
2116 ext = lduw_code(s->pc);
2118 opmode = ext & 0x7f;
2119 switch ((ext >> 13) & 7) {
2124 case 3: /* fmove out */
2126 tmp32 = tcg_temp_new_i32();
2128 /* ??? TODO: Proper behavior on overflow. */
2129 switch ((ext >> 10) & 7) {
2132 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2136 gen_helper_f64_to_f32(tmp32, cpu_env, src);
2140 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2142 case 5: /* OS_DOUBLE */
2143 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2144 switch (insn >> 3) {
2148 tcg_gen_addi_i32(tmp32, tmp32, -8);
2151 offset = ldsw_code(s->pc);
2153 tcg_gen_addi_i32(tmp32, tmp32, offset);
2158 gen_store64(s, tmp32, src);
2159 switch (insn >> 3) {
2161 tcg_gen_addi_i32(tmp32, tmp32, 8);
2162 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2165 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2168 tcg_temp_free_i32(tmp32);
2172 gen_helper_f64_to_i32(tmp32, cpu_env, src);
2177 DEST_EA(insn, opsize, tmp32, NULL);
2178 tcg_temp_free_i32(tmp32);
2180 case 4: /* fmove to control register. */
2181 switch ((ext >> 10) & 7) {
2183 /* Not implemented. Ignore writes. */
2188 cpu_abort(NULL, "Unimplemented: fmove to control %d",
2192 case 5: /* fmove from control register. */
2193 switch ((ext >> 10) & 7) {
2195 /* Not implemented. Always return zero. */
2196 tmp32 = gen_im32(0);
2201 cpu_abort(NULL, "Unimplemented: fmove from control %d",
2205 DEST_EA(insn, OS_LONG, tmp32, NULL);
2207 case 6: /* fmovem */
2213 if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0)
2215 tmp32 = gen_lea(s, insn, OS_LONG);
2216 if (IS_NULL_QREG(tmp32)) {
2220 addr = tcg_temp_new_i32();
2221 tcg_gen_mov_i32(addr, tmp32);
2223 for (i = 0; i < 8; i++) {
2227 if (ext & (1 << 13)) {
2229 tcg_gen_qemu_stf64(dest, addr, IS_USER(s));
2232 tcg_gen_qemu_ldf64(dest, addr, IS_USER(s));
2234 if (ext & (mask - 1))
2235 tcg_gen_addi_i32(addr, addr, 8);
2239 tcg_temp_free_i32(tmp32);
2243 if (ext & (1 << 14)) {
2244 /* Source effective address. */
2245 switch ((ext >> 10) & 7) {
2246 case 0: opsize = OS_LONG; break;
2247 case 1: opsize = OS_SINGLE; break;
2248 case 4: opsize = OS_WORD; break;
2249 case 5: opsize = OS_DOUBLE; break;
2250 case 6: opsize = OS_BYTE; break;
2254 if (opsize == OS_DOUBLE) {
2255 tmp32 = tcg_temp_new_i32();
2256 tcg_gen_mov_i32(tmp32, AREG(insn, 0));
2257 switch (insn >> 3) {
2261 tcg_gen_addi_i32(tmp32, tmp32, -8);
2264 offset = ldsw_code(s->pc);
2266 tcg_gen_addi_i32(tmp32, tmp32, offset);
2269 offset = ldsw_code(s->pc);
2270 offset += s->pc - 2;
2272 tcg_gen_addi_i32(tmp32, tmp32, offset);
2277 src = gen_load64(s, tmp32);
2278 switch (insn >> 3) {
2280 tcg_gen_addi_i32(tmp32, tmp32, 8);
2281 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2284 tcg_gen_mov_i32(AREG(insn, 0), tmp32);
2287 tcg_temp_free_i32(tmp32);
2289 SRC_EA(tmp32, opsize, 1, NULL);
2290 src = tcg_temp_new_i64();
2295 gen_helper_i32_to_f64(src, cpu_env, tmp32);
2298 gen_helper_f32_to_f64(src, cpu_env, tmp32);
2303 /* Source register. */
2304 src = FREG(ext, 10);
2306 dest = FREG(ext, 7);
2307 res = tcg_temp_new_i64();
2309 tcg_gen_mov_f64(res, dest);
2313 case 0: case 0x40: case 0x44: /* fmove */
2314 tcg_gen_mov_f64(res, src);
2317 gen_helper_iround_f64(res, cpu_env, src);
2320 case 3: /* fintrz */
2321 gen_helper_itrunc_f64(res, cpu_env, src);
2324 case 4: case 0x41: case 0x45: /* fsqrt */
2325 gen_helper_sqrt_f64(res, cpu_env, src);
2327 case 0x18: case 0x58: case 0x5c: /* fabs */
2328 gen_helper_abs_f64(res, src);
2330 case 0x1a: case 0x5a: case 0x5e: /* fneg */
2331 gen_helper_chs_f64(res, src);
2333 case 0x20: case 0x60: case 0x64: /* fdiv */
2334 gen_helper_div_f64(res, cpu_env, res, src);
2336 case 0x22: case 0x62: case 0x66: /* fadd */
2337 gen_helper_add_f64(res, cpu_env, res, src);
2339 case 0x23: case 0x63: case 0x67: /* fmul */
2340 gen_helper_mul_f64(res, cpu_env, res, src);
2342 case 0x28: case 0x68: case 0x6c: /* fsub */
2343 gen_helper_sub_f64(res, cpu_env, res, src);
2345 case 0x38: /* fcmp */
2346 gen_helper_sub_cmp_f64(res, cpu_env, res, src);
2350 case 0x3a: /* ftst */
2351 tcg_gen_mov_f64(res, src);
2358 if (ext & (1 << 14)) {
2359 tcg_temp_free_i64(src);
2362 if (opmode & 0x40) {
2363 if ((opmode & 0x4) != 0)
2365 } else if ((s->fpcr & M68K_FPCR_PREC) == 0) {
2370 TCGv tmp = tcg_temp_new_i32();
2371 gen_helper_f64_to_f32(tmp, cpu_env, res);
2372 gen_helper_f32_to_f64(res, cpu_env, tmp);
2373 tcg_temp_free_i32(tmp);
2375 tcg_gen_mov_f64(QREG_FP_RESULT, res);
2377 tcg_gen_mov_f64(dest, res);
2379 tcg_temp_free_i64(res);
2382 /* FIXME: Is this right for offset addressing modes? */
2384 disas_undef_fpu(s, insn);
2395 offset = ldsw_code(s->pc);
2397 if (insn & (1 << 6)) {
2398 offset = (offset << 16) | lduw_code(s->pc);
2402 l1 = gen_new_label();
2403 /* TODO: Raise BSUN exception. */
2404 flag = tcg_temp_new();
2405 gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT);
2406 /* Jump to l1 if condition is true. */
2407 switch (insn & 0xf) {
2410 case 1: /* eq (=0) */
2411 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2413 case 2: /* ogt (=1) */
2414 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1);
2416 case 3: /* oge (=0 or =1) */
2417 tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1);
2419 case 4: /* olt (=-1) */
2420 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1);
2422 case 5: /* ole (=-1 or =0) */
2423 tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1);
2425 case 6: /* ogl (=-1 or =1) */
2426 tcg_gen_andi_i32(flag, flag, 1);
2427 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2429 case 7: /* or (=2) */
2430 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1);
2432 case 8: /* un (<2) */
2433 tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1);
2435 case 9: /* ueq (=0 or =2) */
2436 tcg_gen_andi_i32(flag, flag, 1);
2437 tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1);
2439 case 10: /* ugt (>0) */
2440 tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1);
2442 case 11: /* uge (>=0) */
2443 tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1);
2445 case 12: /* ult (=-1 or =2) */
2446 tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1);
2448 case 13: /* ule (!=1) */
2449 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1);
2451 case 14: /* ne (!=0) */
2452 tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1);
2458 gen_jmp_tb(s, 0, s->pc);
2460 gen_jmp_tb(s, 1, addr + offset);
2463 DISAS_INSN(frestore)
2465 /* TODO: Implement frestore. */
2466 qemu_assert(0, "FRESTORE not implemented");
2471 /* TODO: Implement fsave. */
2472 qemu_assert(0, "FSAVE not implemented");
2475 static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper)
2477 TCGv tmp = tcg_temp_new();
2478 if (s->env->macsr & MACSR_FI) {
2480 tcg_gen_andi_i32(tmp, val, 0xffff0000);
2482 tcg_gen_shli_i32(tmp, val, 16);
2483 } else if (s->env->macsr & MACSR_SU) {
2485 tcg_gen_sari_i32(tmp, val, 16);
2487 tcg_gen_ext16s_i32(tmp, val);
2490 tcg_gen_shri_i32(tmp, val, 16);
2492 tcg_gen_ext16u_i32(tmp, val);
2497 static void gen_mac_clear_flags(void)
2499 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR,
2500 ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV));
2516 s->mactmp = tcg_temp_new_i64();
2520 ext = lduw_code(s->pc);
2523 acc = ((insn >> 7) & 1) | ((ext >> 3) & 2);
2524 dual = ((insn & 0x30) != 0 && (ext & 3) != 0);
2525 if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) {
2526 disas_undef(s, insn);
2530 /* MAC with load. */
2531 tmp = gen_lea(s, insn, OS_LONG);
2532 addr = tcg_temp_new();
2533 tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK);
2534 /* Load the value now to ensure correct exception behavior.
2535 Perform writeback after reading the MAC inputs. */
2536 loadval = gen_load(s, OS_LONG, addr, 0);
2539 rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12);
2540 ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0);
2542 loadval = addr = NULL_QREG;
2543 rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2544 ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2547 gen_mac_clear_flags();
2550 /* Disabled because conditional branches clobber temporary vars. */
2551 if ((s->env->macsr & MACSR_OMC) != 0 && !dual) {
2552 /* Skip the multiply if we know we will ignore it. */
2553 l1 = gen_new_label();
2554 tmp = tcg_temp_new();
2555 tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8));
2556 gen_op_jmp_nz32(tmp, l1);
2560 if ((ext & 0x0800) == 0) {
2562 rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0);
2563 ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0);
2565 if (s->env->macsr & MACSR_FI) {
2566 gen_helper_macmulf(s->mactmp, cpu_env, rx, ry);
2568 if (s->env->macsr & MACSR_SU)
2569 gen_helper_macmuls(s->mactmp, cpu_env, rx, ry);
2571 gen_helper_macmulu(s->mactmp, cpu_env, rx, ry);
2572 switch ((ext >> 9) & 3) {
2574 tcg_gen_shli_i64(s->mactmp, s->mactmp, 1);
2577 tcg_gen_shri_i64(s->mactmp, s->mactmp, 1);
2583 /* Save the overflow flag from the multiply. */
2584 saved_flags = tcg_temp_new();
2585 tcg_gen_mov_i32(saved_flags, QREG_MACSR);
2587 saved_flags = NULL_QREG;
2591 /* Disabled because conditional branches clobber temporary vars. */
2592 if ((s->env->macsr & MACSR_OMC) != 0 && dual) {
2593 /* Skip the accumulate if the value is already saturated. */
2594 l1 = gen_new_label();
2595 tmp = tcg_temp_new();
2596 gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
2597 gen_op_jmp_nz32(tmp, l1);
2602 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2604 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2606 if (s->env->macsr & MACSR_FI)
2607 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2608 else if (s->env->macsr & MACSR_SU)
2609 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2611 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2614 /* Disabled because conditional branches clobber temporary vars. */
2620 /* Dual accumulate variant. */
2621 acc = (ext >> 2) & 3;
2622 /* Restore the overflow flag from the multiplier. */
2623 tcg_gen_mov_i32(QREG_MACSR, saved_flags);
2625 /* Disabled because conditional branches clobber temporary vars. */
2626 if ((s->env->macsr & MACSR_OMC) != 0) {
2627 /* Skip the accumulate if the value is already saturated. */
2628 l1 = gen_new_label();
2629 tmp = tcg_temp_new();
2630 gen_op_and32(tmp, QREG_MACSR, gen_im32(MACSR_PAV0 << acc));
2631 gen_op_jmp_nz32(tmp, l1);
2635 tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp);
2637 tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp);
2638 if (s->env->macsr & MACSR_FI)
2639 gen_helper_macsatf(cpu_env, tcg_const_i32(acc));
2640 else if (s->env->macsr & MACSR_SU)
2641 gen_helper_macsats(cpu_env, tcg_const_i32(acc));
2643 gen_helper_macsatu(cpu_env, tcg_const_i32(acc));
2645 /* Disabled because conditional branches clobber temporary vars. */
2650 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc));
2654 rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9);
2655 tcg_gen_mov_i32(rw, loadval);
2656 /* FIXME: Should address writeback happen with the masked or
2658 switch ((insn >> 3) & 7) {
2659 case 3: /* Post-increment. */
2660 tcg_gen_addi_i32(AREG(insn, 0), addr, 4);
2662 case 4: /* Pre-decrement. */
2663 tcg_gen_mov_i32(AREG(insn, 0), addr);
2668 DISAS_INSN(from_mac)
2674 rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2675 accnum = (insn >> 9) & 3;
2676 acc = MACREG(accnum);
2677 if (s->env->macsr & MACSR_FI) {
2678 gen_helper_get_macf(rx, cpu_env, acc);
2679 } else if ((s->env->macsr & MACSR_OMC) == 0) {
2680 tcg_gen_trunc_i64_i32(rx, acc);
2681 } else if (s->env->macsr & MACSR_SU) {
2682 gen_helper_get_macs(rx, acc);
2684 gen_helper_get_macu(rx, acc);
2687 tcg_gen_movi_i64(acc, 0);
2688 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2692 DISAS_INSN(move_mac)
2694 /* FIXME: This can be done without a helper. */
2698 dest = tcg_const_i32((insn >> 9) & 3);
2699 gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src));
2700 gen_mac_clear_flags();
2701 gen_helper_mac_set_flags(cpu_env, dest);
2704 DISAS_INSN(from_macsr)
2708 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2709 tcg_gen_mov_i32(reg, QREG_MACSR);
2712 DISAS_INSN(from_mask)
2715 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2716 tcg_gen_mov_i32(reg, QREG_MAC_MASK);
2719 DISAS_INSN(from_mext)
2723 reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0);
2724 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2725 if (s->env->macsr & MACSR_FI)
2726 gen_helper_get_mac_extf(reg, cpu_env, acc);
2728 gen_helper_get_mac_exti(reg, cpu_env, acc);
2731 DISAS_INSN(macsr_to_ccr)
2733 tcg_gen_movi_i32(QREG_CC_X, 0);
2734 tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf);
2735 s->cc_op = CC_OP_FLAGS;
2743 accnum = (insn >> 9) & 3;
2744 acc = MACREG(accnum);
2745 SRC_EA(val, OS_LONG, 0, NULL);
2746 if (s->env->macsr & MACSR_FI) {
2747 tcg_gen_ext_i32_i64(acc, val);
2748 tcg_gen_shli_i64(acc, acc, 8);
2749 } else if (s->env->macsr & MACSR_SU) {
2750 tcg_gen_ext_i32_i64(acc, val);
2752 tcg_gen_extu_i32_i64(acc, val);
2754 tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum));
2755 gen_mac_clear_flags();
2756 gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum));
2759 DISAS_INSN(to_macsr)
2762 SRC_EA(val, OS_LONG, 0, NULL);
2763 gen_helper_set_macsr(cpu_env, val);
2770 SRC_EA(val, OS_LONG, 0, NULL);
2771 tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000);
2778 SRC_EA(val, OS_LONG, 0, NULL);
2779 acc = tcg_const_i32((insn & 0x400) ? 2 : 0);
2780 if (s->env->macsr & MACSR_FI)
2781 gen_helper_set_mac_extf(cpu_env, val, acc);
2782 else if (s->env->macsr & MACSR_SU)
2783 gen_helper_set_mac_exts(cpu_env, val, acc);
2785 gen_helper_set_mac_extu(cpu_env, val, acc);
2788 static disas_proc opcode_table[65536];
2791 register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask)
2797 /* Sanity check. All set bits must be included in the mask. */
2798 if (opcode & ~mask) {
2800 "qemu internal error: bogus opcode definition %04x/%04x\n",
2804 /* This could probably be cleverer. For now just optimize the case where
2805 the top bits are known. */
2806 /* Find the first zero bit in the mask. */
2808 while ((i & mask) != 0)
2810 /* Iterate over all combinations of this and lower bits. */
2815 from = opcode & ~(i - 1);
2817 for (i = from; i < to; i++) {
2818 if ((i & mask) == opcode)
2819 opcode_table[i] = proc;
2823 /* Register m68k opcode handlers. Order is important.
2824 Later insn override earlier ones. */
2825 void register_m68k_insns (CPUM68KState *env)
2827 #define INSN(name, opcode, mask, feature) do { \
2828 if (m68k_feature(env, M68K_FEATURE_##feature)) \
2829 register_opcode(disas_##name, 0x##opcode, 0x##mask); \
2831 INSN(undef, 0000, 0000, CF_ISA_A);
2832 INSN(arith_im, 0080, fff8, CF_ISA_A);
2833 INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC);
2834 INSN(bitop_reg, 0100, f1c0, CF_ISA_A);
2835 INSN(bitop_reg, 0140, f1c0, CF_ISA_A);
2836 INSN(bitop_reg, 0180, f1c0, CF_ISA_A);
2837 INSN(bitop_reg, 01c0, f1c0, CF_ISA_A);
2838 INSN(arith_im, 0280, fff8, CF_ISA_A);
2839 INSN(byterev, 02c0, fff8, CF_ISA_APLUSC);
2840 INSN(arith_im, 0480, fff8, CF_ISA_A);
2841 INSN(ff1, 04c0, fff8, CF_ISA_APLUSC);
2842 INSN(arith_im, 0680, fff8, CF_ISA_A);
2843 INSN(bitop_im, 0800, ffc0, CF_ISA_A);
2844 INSN(bitop_im, 0840, ffc0, CF_ISA_A);
2845 INSN(bitop_im, 0880, ffc0, CF_ISA_A);
2846 INSN(bitop_im, 08c0, ffc0, CF_ISA_A);
2847 INSN(arith_im, 0a80, fff8, CF_ISA_A);
2848 INSN(arith_im, 0c00, ff38, CF_ISA_A);
2849 INSN(move, 1000, f000, CF_ISA_A);
2850 INSN(move, 2000, f000, CF_ISA_A);
2851 INSN(move, 3000, f000, CF_ISA_A);
2852 INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC);
2853 INSN(negx, 4080, fff8, CF_ISA_A);
2854 INSN(move_from_sr, 40c0, fff8, CF_ISA_A);
2855 INSN(lea, 41c0, f1c0, CF_ISA_A);
2856 INSN(clr, 4200, ff00, CF_ISA_A);
2857 INSN(undef, 42c0, ffc0, CF_ISA_A);
2858 INSN(move_from_ccr, 42c0, fff8, CF_ISA_A);
2859 INSN(neg, 4480, fff8, CF_ISA_A);
2860 INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A);
2861 INSN(not, 4680, fff8, CF_ISA_A);
2862 INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
2863 INSN(pea, 4840, ffc0, CF_ISA_A);
2864 INSN(swap, 4840, fff8, CF_ISA_A);
2865 INSN(movem, 48c0, fbc0, CF_ISA_A);
2866 INSN(ext, 4880, fff8, CF_ISA_A);
2867 INSN(ext, 48c0, fff8, CF_ISA_A);
2868 INSN(ext, 49c0, fff8, CF_ISA_A);
2869 INSN(tst, 4a00, ff00, CF_ISA_A);
2870 INSN(tas, 4ac0, ffc0, CF_ISA_B);
2871 INSN(halt, 4ac8, ffff, CF_ISA_A);
2872 INSN(pulse, 4acc, ffff, CF_ISA_A);
2873 INSN(illegal, 4afc, ffff, CF_ISA_A);
2874 INSN(mull, 4c00, ffc0, CF_ISA_A);
2875 INSN(divl, 4c40, ffc0, CF_ISA_A);
2876 INSN(sats, 4c80, fff8, CF_ISA_B);
2877 INSN(trap, 4e40, fff0, CF_ISA_A);
2878 INSN(link, 4e50, fff8, CF_ISA_A);
2879 INSN(unlk, 4e58, fff8, CF_ISA_A);
2880 INSN(move_to_usp, 4e60, fff8, USP);
2881 INSN(move_from_usp, 4e68, fff8, USP);
2882 INSN(nop, 4e71, ffff, CF_ISA_A);
2883 INSN(stop, 4e72, ffff, CF_ISA_A);
2884 INSN(rte, 4e73, ffff, CF_ISA_A);
2885 INSN(rts, 4e75, ffff, CF_ISA_A);
2886 INSN(movec, 4e7b, ffff, CF_ISA_A);
2887 INSN(jump, 4e80, ffc0, CF_ISA_A);
2888 INSN(jump, 4ec0, ffc0, CF_ISA_A);
2889 INSN(addsubq, 5180, f1c0, CF_ISA_A);
2890 INSN(scc, 50c0, f0f8, CF_ISA_A);
2891 INSN(addsubq, 5080, f1c0, CF_ISA_A);
2892 INSN(tpf, 51f8, fff8, CF_ISA_A);
2894 /* Branch instructions. */
2895 INSN(branch, 6000, f000, CF_ISA_A);
2896 /* Disable long branch instructions, then add back the ones we want. */
2897 INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */
2898 INSN(branch, 60ff, f0ff, CF_ISA_B);
2899 INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */
2900 INSN(branch, 60ff, ffff, BRAL);
2902 INSN(moveq, 7000, f100, CF_ISA_A);
2903 INSN(mvzs, 7100, f100, CF_ISA_B);
2904 INSN(or, 8000, f000, CF_ISA_A);
2905 INSN(divw, 80c0, f0c0, CF_ISA_A);
2906 INSN(addsub, 9000, f000, CF_ISA_A);
2907 INSN(subx, 9180, f1f8, CF_ISA_A);
2908 INSN(suba, 91c0, f1c0, CF_ISA_A);
2910 INSN(undef_mac, a000, f000, CF_ISA_A);
2911 INSN(mac, a000, f100, CF_EMAC);
2912 INSN(from_mac, a180, f9b0, CF_EMAC);
2913 INSN(move_mac, a110, f9fc, CF_EMAC);
2914 INSN(from_macsr,a980, f9f0, CF_EMAC);
2915 INSN(from_mask, ad80, fff0, CF_EMAC);
2916 INSN(from_mext, ab80, fbf0, CF_EMAC);
2917 INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC);
2918 INSN(to_mac, a100, f9c0, CF_EMAC);
2919 INSN(to_macsr, a900, ffc0, CF_EMAC);
2920 INSN(to_mext, ab00, fbc0, CF_EMAC);
2921 INSN(to_mask, ad00, ffc0, CF_EMAC);
2923 INSN(mov3q, a140, f1c0, CF_ISA_B);
2924 INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */
2925 INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */
2926 INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */
2927 INSN(cmp, b080, f1c0, CF_ISA_A);
2928 INSN(cmpa, b1c0, f1c0, CF_ISA_A);
2929 INSN(eor, b180, f1c0, CF_ISA_A);
2930 INSN(and, c000, f000, CF_ISA_A);
2931 INSN(mulw, c0c0, f0c0, CF_ISA_A);
2932 INSN(addsub, d000, f000, CF_ISA_A);
2933 INSN(addx, d180, f1f8, CF_ISA_A);
2934 INSN(adda, d1c0, f1c0, CF_ISA_A);
2935 INSN(shift_im, e080, f0f0, CF_ISA_A);
2936 INSN(shift_reg, e0a0, f0f0, CF_ISA_A);
2937 INSN(undef_fpu, f000, f000, CF_ISA_A);
2938 INSN(fpu, f200, ffc0, CF_FPU);
2939 INSN(fbcc, f280, ffc0, CF_FPU);
2940 INSN(frestore, f340, ffc0, CF_FPU);
2941 INSN(fsave, f340, ffc0, CF_FPU);
2942 INSN(intouch, f340, ffc0, CF_ISA_A);
2943 INSN(cpushl, f428, ff38, CF_ISA_A);
2944 INSN(wddata, fb00, ff00, CF_ISA_A);
2945 INSN(wdebug, fbc0, ffc0, CF_ISA_A);
2949 /* ??? Some of this implementation is not exception safe. We should always
2950 write back the result to memory before setting the condition codes. */
2951 static void disas_m68k_insn(CPUState * env, DisasContext *s)
2955 insn = lduw_code(s->pc);
2958 opcode_table[insn](s, insn);
2961 /* generate intermediate code for basic block 'tb'. */
2963 gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
2966 DisasContext dc1, *dc = &dc1;
2967 uint16_t *gen_opc_end;
2970 target_ulong pc_start;
2976 /* generate intermediate code */
2981 gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
2984 dc->is_jmp = DISAS_NEXT;
2986 dc->cc_op = CC_OP_DYNAMIC;
2987 dc->singlestep_enabled = env->singlestep_enabled;
2988 dc->fpcr = env->fpcr;
2989 dc->user = (env->sr & SR_S) == 0;
2994 max_insns = tb->cflags & CF_COUNT_MASK;
2996 max_insns = CF_COUNT_MASK;
3000 pc_offset = dc->pc - pc_start;
3001 gen_throws_exception = NULL;
3002 if (unlikely(!TAILQ_EMPTY(&env->breakpoints))) {
3003 TAILQ_FOREACH(bp, &env->breakpoints, entry) {
3004 if (bp->pc == dc->pc) {
3005 gen_exception(dc, dc->pc, EXCP_DEBUG);
3006 dc->is_jmp = DISAS_JUMP;
3014 j = gen_opc_ptr - gen_opc_buf;
3018 gen_opc_instr_start[lj++] = 0;
3020 gen_opc_pc[lj] = dc->pc;
3021 gen_opc_instr_start[lj] = 1;
3022 gen_opc_icount[lj] = num_insns;
3024 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
3026 last_cc_op = dc->cc_op;
3027 dc->insn_pc = dc->pc;
3028 disas_m68k_insn(env, dc);
3030 } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
3031 !env->singlestep_enabled &&
3032 (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
3033 num_insns < max_insns);
3035 if (tb->cflags & CF_LAST_IO)
3037 if (unlikely(env->singlestep_enabled)) {
3038 /* Make sure the pc is updated, and raise a debug exception. */
3040 gen_flush_cc_op(dc);
3041 tcg_gen_movi_i32(QREG_PC, dc->pc);
3043 gen_helper_raise_exception(tcg_const_i32(EXCP_DEBUG));
3045 switch(dc->is_jmp) {
3047 gen_flush_cc_op(dc);
3048 gen_jmp_tb(dc, 0, dc->pc);
3053 gen_flush_cc_op(dc);
3054 /* indicate that the hash table must be used to find the next TB */
3058 /* nothing more to generate */
3062 gen_icount_end(tb, num_insns);
3063 *gen_opc_ptr = INDEX_op_end;
3066 if (loglevel & CPU_LOG_TB_IN_ASM) {
3067 fprintf(logfile, "----------------\n");
3068 fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
3069 target_disas(logfile, pc_start, dc->pc - pc_start, 0);
3070 fprintf(logfile, "\n");
3074 j = gen_opc_ptr - gen_opc_buf;
3077 gen_opc_instr_start[lj++] = 0;
3079 tb->size = dc->pc - pc_start;
3080 tb->icount = num_insns;
3084 //expand_target_qops();
3087 void gen_intermediate_code(CPUState *env, TranslationBlock *tb)
3089 gen_intermediate_code_internal(env, tb, 0);
3092 void gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
3094 gen_intermediate_code_internal(env, tb, 1);
3097 void cpu_dump_state(CPUState *env, FILE *f,
3098 int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
3104 for (i = 0; i < 8; i++)
3106 u.d = env->fregs[i];
3107 cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n",
3108 i, env->dregs[i], i, env->aregs[i],
3109 i, u.l.upper, u.l.lower, *(double *)&u.d);
3111 cpu_fprintf (f, "PC = %08x ", env->pc);
3113 cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-',
3114 (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-',
3115 (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-');
3116 cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result);
3119 void gen_pc_load(CPUState *env, TranslationBlock *tb,
3120 unsigned long searched_pc, int pc_pos, void *puc)
3122 env->pc = gen_opc_pc[pc_pos];