2 * CRIS emulation for qemu: main translation routines.
4 * Copyright (c) 2008 AXIS Communications AB
5 * Written by Edgar E. Iglesias.
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 * Lesser 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/>.
23 * The condition code translation is in need of attention.
27 #include "disas/disas.h"
31 #include "crisv32-decode.h"
38 # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
40 # define LOG_DIS(...) do { } while (0)
44 #define BUG() (gen_BUG(dc, __FILE__, __LINE__))
45 #define BUG_ON(x) ({if (x) BUG();})
49 /* Used by the decoder. */
50 #define EXTRACT_FIELD(src, start, end) \
51 (((src) >> start) & ((1 << (end - start + 1)) - 1))
53 #define CC_MASK_NZ 0xc
54 #define CC_MASK_NZV 0xe
55 #define CC_MASK_NZVC 0xf
56 #define CC_MASK_RNZV 0x10e
58 static TCGv_ptr cpu_env;
59 static TCGv cpu_R[16];
60 static TCGv cpu_PR[16];
64 static TCGv cc_result;
69 static TCGv env_btaken;
70 static TCGv env_btarget;
73 #include "exec/gen-icount.h"
75 /* This is the state at translation time. */
76 typedef struct DisasContext {
81 unsigned int (*decoder)(CPUCRISState *env, struct DisasContext *dc);
86 unsigned int zsize, zzsize;
100 int cc_size_uptodate; /* -1 invalid or last written value. */
102 int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not uptodate. */
103 int flags_uptodate; /* Wether or not $ccs is uptodate. */
104 int flagx_known; /* Wether or not flags_x has the x flag known at
108 int clear_x; /* Clear x after this insn? */
109 int clear_prefix; /* Clear prefix after this insn? */
110 int clear_locked_irq; /* Clear the irq lockout. */
111 int cpustate_changed;
112 unsigned int tb_flags; /* tb dependent flags. */
117 #define JMP_DIRECT_CC 2
118 #define JMP_INDIRECT 3
119 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */
124 struct TranslationBlock *tb;
125 int singlestep_enabled;
128 static void gen_BUG(DisasContext *dc, const char *file, int line)
130 printf("BUG: pc=%x %s %d\n", dc->pc, file, line);
131 qemu_log("BUG: pc=%x %s %d\n", dc->pc, file, line);
132 cpu_abort(dc->env, "%s:%d\n", file, line);
135 static const char *regnames[] =
137 "$r0", "$r1", "$r2", "$r3",
138 "$r4", "$r5", "$r6", "$r7",
139 "$r8", "$r9", "$r10", "$r11",
140 "$r12", "$r13", "$sp", "$acr",
142 static const char *pregnames[] =
144 "$bz", "$vr", "$pid", "$srs",
145 "$wz", "$exs", "$eda", "$mof",
146 "$dz", "$ebp", "$erp", "$srp",
147 "$nrp", "$ccs", "$usp", "$spc",
150 /* We need this table to handle preg-moves with implicit width. */
151 static int preg_sizes[] = {
162 #define t_gen_mov_TN_env(tn, member) \
163 _t_gen_mov_TN_env((tn), offsetof(CPUCRISState, member))
164 #define t_gen_mov_env_TN(member, tn) \
165 _t_gen_mov_env_TN(offsetof(CPUCRISState, member), (tn))
167 static inline void t_gen_mov_TN_reg(TCGv tn, int r)
169 if (r < 0 || r > 15) {
170 fprintf(stderr, "wrong register read $r%d\n", r);
172 tcg_gen_mov_tl(tn, cpu_R[r]);
174 static inline void t_gen_mov_reg_TN(int r, TCGv tn)
176 if (r < 0 || r > 15) {
177 fprintf(stderr, "wrong register write $r%d\n", r);
179 tcg_gen_mov_tl(cpu_R[r], tn);
182 static inline void _t_gen_mov_TN_env(TCGv tn, int offset)
184 if (offset > sizeof(CPUCRISState)) {
185 fprintf(stderr, "wrong load from env from off=%d\n", offset);
187 tcg_gen_ld_tl(tn, cpu_env, offset);
189 static inline void _t_gen_mov_env_TN(int offset, TCGv tn)
191 if (offset > sizeof(CPUCRISState)) {
192 fprintf(stderr, "wrong store to env at off=%d\n", offset);
194 tcg_gen_st_tl(tn, cpu_env, offset);
197 static inline void t_gen_mov_TN_preg(TCGv tn, int r)
199 if (r < 0 || r > 15) {
200 fprintf(stderr, "wrong register read $p%d\n", r);
202 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) {
203 tcg_gen_mov_tl(tn, tcg_const_tl(0));
204 } else if (r == PR_VR) {
205 tcg_gen_mov_tl(tn, tcg_const_tl(32));
207 tcg_gen_mov_tl(tn, cpu_PR[r]);
210 static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn)
212 if (r < 0 || r > 15) {
213 fprintf(stderr, "wrong register write $p%d\n", r);
215 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) {
217 } else if (r == PR_SRS) {
218 tcg_gen_andi_tl(cpu_PR[r], tn, 3);
221 gen_helper_tlb_flush_pid(cpu_env, tn);
223 if (dc->tb_flags & S_FLAG && r == PR_SPC) {
224 gen_helper_spc_write(cpu_env, tn);
225 } else if (r == PR_CCS) {
226 dc->cpustate_changed = 1;
228 tcg_gen_mov_tl(cpu_PR[r], tn);
232 /* Sign extend at translation time. */
233 static int sign_extend(unsigned int val, unsigned int width)
245 static int cris_fetch(CPUCRISState *env, DisasContext *dc, uint32_t addr,
246 unsigned int size, unsigned int sign)
253 r = cpu_ldl_code(env, addr);
259 r = cpu_ldsw_code(env, addr);
261 r = cpu_lduw_code(env, addr);
268 r = cpu_ldsb_code(env, addr);
270 r = cpu_ldub_code(env, addr);
275 cpu_abort(dc->env, "Invalid fetch size %d\n", size);
281 static void cris_lock_irq(DisasContext *dc)
283 dc->clear_locked_irq = 0;
284 t_gen_mov_env_TN(locked_irq, tcg_const_tl(1));
287 static inline void t_gen_raise_exception(uint32_t index)
289 TCGv_i32 tmp = tcg_const_i32(index);
290 gen_helper_raise_exception(cpu_env, tmp);
291 tcg_temp_free_i32(tmp);
294 static void t_gen_lsl(TCGv d, TCGv a, TCGv b)
299 t_31 = tcg_const_tl(31);
300 tcg_gen_shl_tl(d, a, b);
302 tcg_gen_sub_tl(t0, t_31, b);
303 tcg_gen_sar_tl(t0, t0, t_31);
304 tcg_gen_and_tl(t0, t0, d);
305 tcg_gen_xor_tl(d, d, t0);
310 static void t_gen_lsr(TCGv d, TCGv a, TCGv b)
315 t_31 = tcg_temp_new();
316 tcg_gen_shr_tl(d, a, b);
318 tcg_gen_movi_tl(t_31, 31);
319 tcg_gen_sub_tl(t0, t_31, b);
320 tcg_gen_sar_tl(t0, t0, t_31);
321 tcg_gen_and_tl(t0, t0, d);
322 tcg_gen_xor_tl(d, d, t0);
327 static void t_gen_asr(TCGv d, TCGv a, TCGv b)
332 t_31 = tcg_temp_new();
333 tcg_gen_sar_tl(d, a, b);
335 tcg_gen_movi_tl(t_31, 31);
336 tcg_gen_sub_tl(t0, t_31, b);
337 tcg_gen_sar_tl(t0, t0, t_31);
338 tcg_gen_or_tl(d, d, t0);
343 static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b)
347 l1 = gen_new_label();
354 tcg_gen_shli_tl(d, a, 1);
355 tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1);
356 tcg_gen_sub_tl(d, d, b);
360 static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs)
370 tcg_gen_shli_tl(d, a, 1);
371 tcg_gen_shli_tl(t, ccs, 31 - 3);
372 tcg_gen_sari_tl(t, t, 31);
373 tcg_gen_and_tl(t, t, b);
374 tcg_gen_add_tl(d, d, t);
378 /* Extended arithmetics on CRIS. */
379 static inline void t_gen_add_flag(TCGv d, int flag)
384 t_gen_mov_TN_preg(c, PR_CCS);
385 /* Propagate carry into d. */
386 tcg_gen_andi_tl(c, c, 1 << flag);
388 tcg_gen_shri_tl(c, c, flag);
390 tcg_gen_add_tl(d, d, c);
394 static inline void t_gen_addx_carry(DisasContext *dc, TCGv d)
396 if (dc->flagx_known) {
401 t_gen_mov_TN_preg(c, PR_CCS);
402 /* C flag is already at bit 0. */
403 tcg_gen_andi_tl(c, c, C_FLAG);
404 tcg_gen_add_tl(d, d, c);
412 t_gen_mov_TN_preg(x, PR_CCS);
413 tcg_gen_mov_tl(c, x);
415 /* Propagate carry into d if X is set. Branch free. */
416 tcg_gen_andi_tl(c, c, C_FLAG);
417 tcg_gen_andi_tl(x, x, X_FLAG);
418 tcg_gen_shri_tl(x, x, 4);
420 tcg_gen_and_tl(x, x, c);
421 tcg_gen_add_tl(d, d, x);
427 static inline void t_gen_subx_carry(DisasContext *dc, TCGv d)
429 if (dc->flagx_known) {
434 t_gen_mov_TN_preg(c, PR_CCS);
435 /* C flag is already at bit 0. */
436 tcg_gen_andi_tl(c, c, C_FLAG);
437 tcg_gen_sub_tl(d, d, c);
445 t_gen_mov_TN_preg(x, PR_CCS);
446 tcg_gen_mov_tl(c, x);
448 /* Propagate carry into d if X is set. Branch free. */
449 tcg_gen_andi_tl(c, c, C_FLAG);
450 tcg_gen_andi_tl(x, x, X_FLAG);
451 tcg_gen_shri_tl(x, x, 4);
453 tcg_gen_and_tl(x, x, c);
454 tcg_gen_sub_tl(d, d, x);
460 /* Swap the two bytes within each half word of the s operand.
461 T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
462 static inline void t_gen_swapb(TCGv d, TCGv s)
467 org_s = tcg_temp_new();
469 /* d and s may refer to the same object. */
470 tcg_gen_mov_tl(org_s, s);
471 tcg_gen_shli_tl(t, org_s, 8);
472 tcg_gen_andi_tl(d, t, 0xff00ff00);
473 tcg_gen_shri_tl(t, org_s, 8);
474 tcg_gen_andi_tl(t, t, 0x00ff00ff);
475 tcg_gen_or_tl(d, d, t);
477 tcg_temp_free(org_s);
480 /* Swap the halfwords of the s operand. */
481 static inline void t_gen_swapw(TCGv d, TCGv s)
484 /* d and s refer the same object. */
486 tcg_gen_mov_tl(t, s);
487 tcg_gen_shli_tl(d, t, 16);
488 tcg_gen_shri_tl(t, t, 16);
489 tcg_gen_or_tl(d, d, t);
493 /* Reverse the within each byte.
494 T0 = (((T0 << 7) & 0x80808080) |
495 ((T0 << 5) & 0x40404040) |
496 ((T0 << 3) & 0x20202020) |
497 ((T0 << 1) & 0x10101010) |
498 ((T0 >> 1) & 0x08080808) |
499 ((T0 >> 3) & 0x04040404) |
500 ((T0 >> 5) & 0x02020202) |
501 ((T0 >> 7) & 0x01010101));
503 static inline void t_gen_swapr(TCGv d, TCGv s)
506 int shift; /* LSL when positive, LSR when negative. */
521 /* d and s refer the same object. */
523 org_s = tcg_temp_new();
524 tcg_gen_mov_tl(org_s, s);
526 tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
527 tcg_gen_andi_tl(d, t, bitrev[0].mask);
528 for (i = 1; i < ARRAY_SIZE(bitrev); i++) {
529 if (bitrev[i].shift >= 0) {
530 tcg_gen_shli_tl(t, org_s, bitrev[i].shift);
532 tcg_gen_shri_tl(t, org_s, -bitrev[i].shift);
534 tcg_gen_andi_tl(t, t, bitrev[i].mask);
535 tcg_gen_or_tl(d, d, t);
538 tcg_temp_free(org_s);
541 static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false)
545 l1 = gen_new_label();
547 /* Conditional jmp. */
548 tcg_gen_mov_tl(env_pc, pc_false);
549 tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1);
550 tcg_gen_mov_tl(env_pc, pc_true);
554 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
556 TranslationBlock *tb;
558 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
560 tcg_gen_movi_tl(env_pc, dest);
561 tcg_gen_exit_tb((uintptr_t)tb + n);
563 tcg_gen_movi_tl(env_pc, dest);
568 static inline void cris_clear_x_flag(DisasContext *dc)
570 if (dc->flagx_known && dc->flags_x) {
571 dc->flags_uptodate = 0;
578 static void cris_flush_cc_state(DisasContext *dc)
580 if (dc->cc_size_uptodate != dc->cc_size) {
581 tcg_gen_movi_tl(cc_size, dc->cc_size);
582 dc->cc_size_uptodate = dc->cc_size;
584 tcg_gen_movi_tl(cc_op, dc->cc_op);
585 tcg_gen_movi_tl(cc_mask, dc->cc_mask);
588 static void cris_evaluate_flags(DisasContext *dc)
590 if (dc->flags_uptodate) {
594 cris_flush_cc_state(dc);
598 gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], cpu_env,
599 cpu_PR[PR_CCS], cc_src,
603 gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], cpu_env,
604 cpu_PR[PR_CCS], cc_result,
608 gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], cpu_env,
609 cpu_PR[PR_CCS], cc_result,
619 switch (dc->cc_size) {
621 gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS],
622 cpu_env, cpu_PR[PR_CCS], cc_result);
625 gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS],
626 cpu_env, cpu_PR[PR_CCS], cc_result);
629 gen_helper_evaluate_flags(cpu_env);
638 if (dc->cc_size == 4) {
639 gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], cpu_env,
640 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
642 gen_helper_evaluate_flags(cpu_env);
647 switch (dc->cc_size) {
649 gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], cpu_env,
650 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result);
653 gen_helper_evaluate_flags(cpu_env);
659 if (dc->flagx_known) {
661 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], X_FLAG);
662 } else if (dc->cc_op == CC_OP_FLAGS) {
663 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~X_FLAG);
666 dc->flags_uptodate = 1;
669 static void cris_cc_mask(DisasContext *dc, unsigned int mask)
678 /* Check if we need to evaluate the condition codes due to
680 ovl = (dc->cc_mask ^ mask) & ~mask;
682 /* TODO: optimize this case. It trigs all the time. */
683 cris_evaluate_flags(dc);
689 static void cris_update_cc_op(DisasContext *dc, int op, int size)
693 dc->flags_uptodate = 0;
696 static inline void cris_update_cc_x(DisasContext *dc)
698 /* Save the x flag state at the time of the cc snapshot. */
699 if (dc->flagx_known) {
700 if (dc->cc_x_uptodate == (2 | dc->flags_x)) {
703 tcg_gen_movi_tl(cc_x, dc->flags_x);
704 dc->cc_x_uptodate = 2 | dc->flags_x;
706 tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG);
707 dc->cc_x_uptodate = 1;
711 /* Update cc prior to executing ALU op. Needs source operands untouched. */
712 static void cris_pre_alu_update_cc(DisasContext *dc, int op,
713 TCGv dst, TCGv src, int size)
716 cris_update_cc_op(dc, op, size);
717 tcg_gen_mov_tl(cc_src, src);
725 && op != CC_OP_LSL) {
726 tcg_gen_mov_tl(cc_dest, dst);
729 cris_update_cc_x(dc);
733 /* Update cc after executing ALU op. needs the result. */
734 static inline void cris_update_result(DisasContext *dc, TCGv res)
737 tcg_gen_mov_tl(cc_result, res);
741 /* Returns one if the write back stage should execute. */
742 static void cris_alu_op_exec(DisasContext *dc, int op,
743 TCGv dst, TCGv a, TCGv b, int size)
745 /* Emit the ALU insns. */
748 tcg_gen_add_tl(dst, a, b);
749 /* Extended arithmetics. */
750 t_gen_addx_carry(dc, dst);
753 tcg_gen_add_tl(dst, a, b);
754 t_gen_add_flag(dst, 0); /* C_FLAG. */
757 tcg_gen_add_tl(dst, a, b);
758 t_gen_add_flag(dst, 8); /* R_FLAG. */
761 tcg_gen_sub_tl(dst, a, b);
762 /* Extended arithmetics. */
763 t_gen_subx_carry(dc, dst);
766 tcg_gen_mov_tl(dst, b);
769 tcg_gen_or_tl(dst, a, b);
772 tcg_gen_and_tl(dst, a, b);
775 tcg_gen_xor_tl(dst, a, b);
778 t_gen_lsl(dst, a, b);
781 t_gen_lsr(dst, a, b);
784 t_gen_asr(dst, a, b);
787 tcg_gen_neg_tl(dst, b);
788 /* Extended arithmetics. */
789 t_gen_subx_carry(dc, dst);
792 gen_helper_lz(dst, b);
795 tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b);
798 tcg_gen_mulu2_tl(dst, cpu_PR[PR_MOF], a, b);
801 t_gen_cris_dstep(dst, a, b);
804 t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]);
809 l1 = gen_new_label();
810 tcg_gen_mov_tl(dst, a);
811 tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1);
812 tcg_gen_mov_tl(dst, b);
817 tcg_gen_sub_tl(dst, a, b);
818 /* Extended arithmetics. */
819 t_gen_subx_carry(dc, dst);
822 qemu_log("illegal ALU op.\n");
828 tcg_gen_andi_tl(dst, dst, 0xff);
829 } else if (size == 2) {
830 tcg_gen_andi_tl(dst, dst, 0xffff);
834 static void cris_alu(DisasContext *dc, int op,
835 TCGv d, TCGv op_a, TCGv op_b, int size)
842 if (op == CC_OP_CMP) {
843 tmp = tcg_temp_new();
845 } else if (size == 4) {
849 tmp = tcg_temp_new();
853 cris_pre_alu_update_cc(dc, op, op_a, op_b, size);
854 cris_alu_op_exec(dc, op, tmp, op_a, op_b, size);
855 cris_update_result(dc, tmp);
860 tcg_gen_andi_tl(d, d, ~0xff);
862 tcg_gen_andi_tl(d, d, ~0xffff);
864 tcg_gen_or_tl(d, d, tmp);
866 if (!TCGV_EQUAL(tmp, d)) {
871 static int arith_cc(DisasContext *dc)
875 case CC_OP_ADDC: return 1;
876 case CC_OP_ADD: return 1;
877 case CC_OP_SUB: return 1;
878 case CC_OP_DSTEP: return 1;
879 case CC_OP_LSL: return 1;
880 case CC_OP_LSR: return 1;
881 case CC_OP_ASR: return 1;
882 case CC_OP_CMP: return 1;
883 case CC_OP_NEG: return 1;
884 case CC_OP_OR: return 1;
885 case CC_OP_AND: return 1;
886 case CC_OP_XOR: return 1;
887 case CC_OP_MULU: return 1;
888 case CC_OP_MULS: return 1;
896 static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
898 int arith_opt, move_opt;
900 /* TODO: optimize more condition codes. */
903 * If the flags are live, we've gotta look into the bits of CCS.
904 * Otherwise, if we just did an arithmetic operation we try to
905 * evaluate the condition code faster.
907 * When this function is done, T0 should be non-zero if the condition
910 arith_opt = arith_cc(dc) && !dc->flags_uptodate;
911 move_opt = (dc->cc_op == CC_OP_MOVE);
914 if ((arith_opt || move_opt)
915 && dc->cc_x_uptodate != (2 | X_FLAG)) {
916 tcg_gen_setcond_tl(TCG_COND_EQ, cc,
917 cc_result, tcg_const_tl(0));
919 cris_evaluate_flags(dc);
921 cpu_PR[PR_CCS], Z_FLAG);
925 if ((arith_opt || move_opt)
926 && dc->cc_x_uptodate != (2 | X_FLAG)) {
927 tcg_gen_mov_tl(cc, cc_result);
929 cris_evaluate_flags(dc);
930 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
932 tcg_gen_andi_tl(cc, cc, Z_FLAG);
936 cris_evaluate_flags(dc);
937 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
940 cris_evaluate_flags(dc);
941 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
942 tcg_gen_andi_tl(cc, cc, C_FLAG);
945 cris_evaluate_flags(dc);
946 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
949 cris_evaluate_flags(dc);
950 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
952 tcg_gen_andi_tl(cc, cc, V_FLAG);
955 if (arith_opt || move_opt) {
958 if (dc->cc_size == 1) {
960 } else if (dc->cc_size == 2) {
964 tcg_gen_shri_tl(cc, cc_result, bits);
965 tcg_gen_xori_tl(cc, cc, 1);
967 cris_evaluate_flags(dc);
968 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
970 tcg_gen_andi_tl(cc, cc, N_FLAG);
974 if (arith_opt || move_opt) {
977 if (dc->cc_size == 1) {
979 } else if (dc->cc_size == 2) {
983 tcg_gen_shri_tl(cc, cc_result, bits);
984 tcg_gen_andi_tl(cc, cc, 1);
986 cris_evaluate_flags(dc);
987 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
992 cris_evaluate_flags(dc);
993 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
997 cris_evaluate_flags(dc);
1001 tmp = tcg_temp_new();
1002 tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
1004 /* Overlay the C flag on top of the Z. */
1005 tcg_gen_shli_tl(cc, tmp, 2);
1006 tcg_gen_and_tl(cc, tmp, cc);
1007 tcg_gen_andi_tl(cc, cc, Z_FLAG);
1013 cris_evaluate_flags(dc);
1014 /* Overlay the V flag on top of the N. */
1015 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1017 cpu_PR[PR_CCS], cc);
1018 tcg_gen_andi_tl(cc, cc, N_FLAG);
1019 tcg_gen_xori_tl(cc, cc, N_FLAG);
1022 cris_evaluate_flags(dc);
1023 /* Overlay the V flag on top of the N. */
1024 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1026 cpu_PR[PR_CCS], cc);
1027 tcg_gen_andi_tl(cc, cc, N_FLAG);
1030 cris_evaluate_flags(dc);
1037 /* To avoid a shift we overlay everything on
1039 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1040 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1042 tcg_gen_xori_tl(z, z, 2);
1044 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1045 tcg_gen_xori_tl(n, n, 2);
1046 tcg_gen_and_tl(cc, z, n);
1047 tcg_gen_andi_tl(cc, cc, 2);
1054 cris_evaluate_flags(dc);
1061 /* To avoid a shift we overlay everything on
1063 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1064 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1066 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1067 tcg_gen_or_tl(cc, z, n);
1068 tcg_gen_andi_tl(cc, cc, 2);
1075 cris_evaluate_flags(dc);
1076 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
1079 tcg_gen_movi_tl(cc, 1);
1087 static void cris_store_direct_jmp(DisasContext *dc)
1089 /* Store the direct jmp state into the cpu-state. */
1090 if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) {
1091 if (dc->jmp == JMP_DIRECT) {
1092 tcg_gen_movi_tl(env_btaken, 1);
1094 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1095 dc->jmp = JMP_INDIRECT;
1099 static void cris_prepare_cc_branch (DisasContext *dc,
1100 int offset, int cond)
1102 /* This helps us re-schedule the micro-code to insns in delay-slots
1103 before the actual jump. */
1104 dc->delayed_branch = 2;
1105 dc->jmp = JMP_DIRECT_CC;
1106 dc->jmp_pc = dc->pc + offset;
1108 gen_tst_cc(dc, env_btaken, cond);
1109 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1113 /* jumps, when the dest is in a live reg for example. Direct should be set
1114 when the dest addr is constant to allow tb chaining. */
1115 static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type)
1117 /* This helps us re-schedule the micro-code to insns in delay-slots
1118 before the actual jump. */
1119 dc->delayed_branch = 2;
1121 if (type == JMP_INDIRECT) {
1122 tcg_gen_movi_tl(env_btaken, 1);
1126 static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr)
1128 int mem_index = cpu_mmu_index(dc->env);
1130 /* If we get a fault on a delayslot we must keep the jmp state in
1131 the cpu-state to be able to re-execute the jmp. */
1132 if (dc->delayed_branch == 1) {
1133 cris_store_direct_jmp(dc);
1136 tcg_gen_qemu_ld_i64(dst, addr, mem_index, MO_TEQ);
1139 static void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
1140 unsigned int size, int sign)
1142 int mem_index = cpu_mmu_index(dc->env);
1144 /* If we get a fault on a delayslot we must keep the jmp state in
1145 the cpu-state to be able to re-execute the jmp. */
1146 if (dc->delayed_branch == 1) {
1147 cris_store_direct_jmp(dc);
1150 tcg_gen_qemu_ld_tl(dst, addr, mem_index,
1151 MO_TE + ctz32(size) + (sign ? MO_SIGN : 0));
1154 static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
1157 int mem_index = cpu_mmu_index(dc->env);
1159 /* If we get a fault on a delayslot we must keep the jmp state in
1160 the cpu-state to be able to re-execute the jmp. */
1161 if (dc->delayed_branch == 1) {
1162 cris_store_direct_jmp(dc);
1166 /* Conditional writes. We only support the kind were X and P are known
1167 at translation time. */
1168 if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
1170 cris_evaluate_flags(dc);
1171 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
1175 tcg_gen_qemu_st_tl(val, addr, mem_index, MO_TE + ctz32(size));
1177 if (dc->flagx_known && dc->flags_x) {
1178 cris_evaluate_flags(dc);
1179 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
1183 static inline void t_gen_sext(TCGv d, TCGv s, int size)
1186 tcg_gen_ext8s_i32(d, s);
1187 } else if (size == 2) {
1188 tcg_gen_ext16s_i32(d, s);
1189 } else if (!TCGV_EQUAL(d, s)) {
1190 tcg_gen_mov_tl(d, s);
1194 static inline void t_gen_zext(TCGv d, TCGv s, int size)
1197 tcg_gen_ext8u_i32(d, s);
1198 } else if (size == 2) {
1199 tcg_gen_ext16u_i32(d, s);
1200 } else if (!TCGV_EQUAL(d, s)) {
1201 tcg_gen_mov_tl(d, s);
1206 static char memsize_char(int size)
1209 case 1: return 'b'; break;
1210 case 2: return 'w'; break;
1211 case 4: return 'd'; break;
1219 static inline unsigned int memsize_z(DisasContext *dc)
1221 return dc->zsize + 1;
1224 static inline unsigned int memsize_zz(DisasContext *dc)
1226 switch (dc->zzsize) {
1234 static inline void do_postinc (DisasContext *dc, int size)
1237 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
1241 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
1242 int size, int s_ext, TCGv dst)
1245 t_gen_sext(dst, cpu_R[rs], size);
1247 t_gen_zext(dst, cpu_R[rs], size);
1251 /* Prepare T0 and T1 for a register alu operation.
1252 s_ext decides if the operand1 should be sign-extended or zero-extended when
1254 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
1255 int size, int s_ext, TCGv dst, TCGv src)
1257 dec_prep_move_r(dc, rs, rd, size, s_ext, src);
1260 t_gen_sext(dst, cpu_R[rd], size);
1262 t_gen_zext(dst, cpu_R[rd], size);
1266 static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc,
1267 int s_ext, int memsize, TCGv dst)
1275 is_imm = rs == 15 && dc->postinc;
1277 /* Load [$rs] onto T1. */
1279 insn_len = 2 + memsize;
1284 imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext);
1285 tcg_gen_movi_tl(dst, imm);
1288 cris_flush_cc_state(dc);
1289 gen_load(dc, dst, cpu_R[rs], memsize, 0);
1291 t_gen_sext(dst, dst, memsize);
1293 t_gen_zext(dst, dst, memsize);
1299 /* Prepare T0 and T1 for a memory + alu operation.
1300 s_ext decides if the operand1 should be sign-extended or zero-extended when
1302 static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc,
1303 int s_ext, int memsize, TCGv dst, TCGv src)
1307 insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src);
1308 tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
1313 static const char *cc_name(int cc)
1315 static const char *cc_names[16] = {
1316 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
1317 "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
1320 return cc_names[cc];
1324 /* Start of insn decoders. */
1326 static int dec_bccq(CPUCRISState *env, DisasContext *dc)
1330 uint32_t cond = dc->op2;
1332 offset = EXTRACT_FIELD(dc->ir, 1, 7);
1333 sign = EXTRACT_FIELD(dc->ir, 0, 0);
1336 offset |= sign << 8;
1337 offset = sign_extend(offset, 8);
1339 LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset);
1341 /* op2 holds the condition-code. */
1342 cris_cc_mask(dc, 0);
1343 cris_prepare_cc_branch(dc, offset, cond);
1346 static int dec_addoq(CPUCRISState *env, DisasContext *dc)
1350 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
1351 imm = sign_extend(dc->op1, 7);
1353 LOG_DIS("addoq %d, $r%u\n", imm, dc->op2);
1354 cris_cc_mask(dc, 0);
1355 /* Fetch register operand, */
1356 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
1360 static int dec_addq(CPUCRISState *env, DisasContext *dc)
1362 LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2);
1364 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1366 cris_cc_mask(dc, CC_MASK_NZVC);
1368 cris_alu(dc, CC_OP_ADD,
1369 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1372 static int dec_moveq(CPUCRISState *env, DisasContext *dc)
1376 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1377 imm = sign_extend(dc->op1, 5);
1378 LOG_DIS("moveq %d, $r%u\n", imm, dc->op2);
1380 tcg_gen_movi_tl(cpu_R[dc->op2], imm);
1383 static int dec_subq(CPUCRISState *env, DisasContext *dc)
1385 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1387 LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2);
1389 cris_cc_mask(dc, CC_MASK_NZVC);
1390 cris_alu(dc, CC_OP_SUB,
1391 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1394 static int dec_cmpq(CPUCRISState *env, DisasContext *dc)
1397 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1398 imm = sign_extend(dc->op1, 5);
1400 LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2);
1401 cris_cc_mask(dc, CC_MASK_NZVC);
1403 cris_alu(dc, CC_OP_CMP,
1404 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1407 static int dec_andq(CPUCRISState *env, DisasContext *dc)
1410 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1411 imm = sign_extend(dc->op1, 5);
1413 LOG_DIS("andq %d, $r%d\n", imm, dc->op2);
1414 cris_cc_mask(dc, CC_MASK_NZ);
1416 cris_alu(dc, CC_OP_AND,
1417 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1420 static int dec_orq(CPUCRISState *env, DisasContext *dc)
1423 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1424 imm = sign_extend(dc->op1, 5);
1425 LOG_DIS("orq %d, $r%d\n", imm, dc->op2);
1426 cris_cc_mask(dc, CC_MASK_NZ);
1428 cris_alu(dc, CC_OP_OR,
1429 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1432 static int dec_btstq(CPUCRISState *env, DisasContext *dc)
1434 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1435 LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2);
1437 cris_cc_mask(dc, CC_MASK_NZ);
1438 cris_evaluate_flags(dc);
1439 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1440 tcg_const_tl(dc->op1), cpu_PR[PR_CCS]);
1441 cris_alu(dc, CC_OP_MOVE,
1442 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1443 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1444 dc->flags_uptodate = 1;
1447 static int dec_asrq(CPUCRISState *env, DisasContext *dc)
1449 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1450 LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2);
1451 cris_cc_mask(dc, CC_MASK_NZ);
1453 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1454 cris_alu(dc, CC_OP_MOVE,
1456 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1459 static int dec_lslq(CPUCRISState *env, DisasContext *dc)
1461 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1462 LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2);
1464 cris_cc_mask(dc, CC_MASK_NZ);
1466 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1468 cris_alu(dc, CC_OP_MOVE,
1470 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1473 static int dec_lsrq(CPUCRISState *env, DisasContext *dc)
1475 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1476 LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2);
1478 cris_cc_mask(dc, CC_MASK_NZ);
1480 tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1481 cris_alu(dc, CC_OP_MOVE,
1483 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1487 static int dec_move_r(CPUCRISState *env, DisasContext *dc)
1489 int size = memsize_zz(dc);
1491 LOG_DIS("move.%c $r%u, $r%u\n",
1492 memsize_char(size), dc->op1, dc->op2);
1494 cris_cc_mask(dc, CC_MASK_NZ);
1496 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
1497 cris_cc_mask(dc, CC_MASK_NZ);
1498 cris_update_cc_op(dc, CC_OP_MOVE, 4);
1499 cris_update_cc_x(dc);
1500 cris_update_result(dc, cpu_R[dc->op2]);
1504 t0 = tcg_temp_new();
1505 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1506 cris_alu(dc, CC_OP_MOVE,
1508 cpu_R[dc->op2], t0, size);
1514 static int dec_scc_r(CPUCRISState *env, DisasContext *dc)
1518 LOG_DIS("s%s $r%u\n",
1519 cc_name(cond), dc->op1);
1524 gen_tst_cc(dc, cpu_R[dc->op1], cond);
1525 l1 = gen_new_label();
1526 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
1527 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1530 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1533 cris_cc_mask(dc, 0);
1537 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
1540 t[0] = cpu_R[dc->op2];
1541 t[1] = cpu_R[dc->op1];
1543 t[0] = tcg_temp_new();
1544 t[1] = tcg_temp_new();
1548 static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
1551 tcg_temp_free(t[0]);
1552 tcg_temp_free(t[1]);
1556 static int dec_and_r(CPUCRISState *env, DisasContext *dc)
1559 int size = memsize_zz(dc);
1561 LOG_DIS("and.%c $r%u, $r%u\n",
1562 memsize_char(size), dc->op1, dc->op2);
1564 cris_cc_mask(dc, CC_MASK_NZ);
1566 cris_alu_alloc_temps(dc, size, t);
1567 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1568 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
1569 cris_alu_free_temps(dc, size, t);
1573 static int dec_lz_r(CPUCRISState *env, DisasContext *dc)
1576 LOG_DIS("lz $r%u, $r%u\n",
1578 cris_cc_mask(dc, CC_MASK_NZ);
1579 t0 = tcg_temp_new();
1580 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
1581 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1586 static int dec_lsl_r(CPUCRISState *env, DisasContext *dc)
1589 int size = memsize_zz(dc);
1591 LOG_DIS("lsl.%c $r%u, $r%u\n",
1592 memsize_char(size), dc->op1, dc->op2);
1594 cris_cc_mask(dc, CC_MASK_NZ);
1595 cris_alu_alloc_temps(dc, size, t);
1596 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1597 tcg_gen_andi_tl(t[1], t[1], 63);
1598 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
1599 cris_alu_alloc_temps(dc, size, t);
1603 static int dec_lsr_r(CPUCRISState *env, DisasContext *dc)
1606 int size = memsize_zz(dc);
1608 LOG_DIS("lsr.%c $r%u, $r%u\n",
1609 memsize_char(size), dc->op1, dc->op2);
1611 cris_cc_mask(dc, CC_MASK_NZ);
1612 cris_alu_alloc_temps(dc, size, t);
1613 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1614 tcg_gen_andi_tl(t[1], t[1], 63);
1615 cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size);
1616 cris_alu_free_temps(dc, size, t);
1620 static int dec_asr_r(CPUCRISState *env, DisasContext *dc)
1623 int size = memsize_zz(dc);
1625 LOG_DIS("asr.%c $r%u, $r%u\n",
1626 memsize_char(size), dc->op1, dc->op2);
1628 cris_cc_mask(dc, CC_MASK_NZ);
1629 cris_alu_alloc_temps(dc, size, t);
1630 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1631 tcg_gen_andi_tl(t[1], t[1], 63);
1632 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
1633 cris_alu_free_temps(dc, size, t);
1637 static int dec_muls_r(CPUCRISState *env, DisasContext *dc)
1640 int size = memsize_zz(dc);
1642 LOG_DIS("muls.%c $r%u, $r%u\n",
1643 memsize_char(size), dc->op1, dc->op2);
1644 cris_cc_mask(dc, CC_MASK_NZV);
1645 cris_alu_alloc_temps(dc, size, t);
1646 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1648 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
1649 cris_alu_free_temps(dc, size, t);
1653 static int dec_mulu_r(CPUCRISState *env, DisasContext *dc)
1656 int size = memsize_zz(dc);
1658 LOG_DIS("mulu.%c $r%u, $r%u\n",
1659 memsize_char(size), dc->op1, dc->op2);
1660 cris_cc_mask(dc, CC_MASK_NZV);
1661 cris_alu_alloc_temps(dc, size, t);
1662 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1664 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
1665 cris_alu_alloc_temps(dc, size, t);
1670 static int dec_dstep_r(CPUCRISState *env, DisasContext *dc)
1672 LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2);
1673 cris_cc_mask(dc, CC_MASK_NZ);
1674 cris_alu(dc, CC_OP_DSTEP,
1675 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1679 static int dec_xor_r(CPUCRISState *env, DisasContext *dc)
1682 int size = memsize_zz(dc);
1683 LOG_DIS("xor.%c $r%u, $r%u\n",
1684 memsize_char(size), dc->op1, dc->op2);
1685 BUG_ON(size != 4); /* xor is dword. */
1686 cris_cc_mask(dc, CC_MASK_NZ);
1687 cris_alu_alloc_temps(dc, size, t);
1688 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1690 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
1691 cris_alu_free_temps(dc, size, t);
1695 static int dec_bound_r(CPUCRISState *env, DisasContext *dc)
1698 int size = memsize_zz(dc);
1699 LOG_DIS("bound.%c $r%u, $r%u\n",
1700 memsize_char(size), dc->op1, dc->op2);
1701 cris_cc_mask(dc, CC_MASK_NZ);
1702 l0 = tcg_temp_local_new();
1703 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
1704 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
1709 static int dec_cmp_r(CPUCRISState *env, DisasContext *dc)
1712 int size = memsize_zz(dc);
1713 LOG_DIS("cmp.%c $r%u, $r%u\n",
1714 memsize_char(size), dc->op1, dc->op2);
1715 cris_cc_mask(dc, CC_MASK_NZVC);
1716 cris_alu_alloc_temps(dc, size, t);
1717 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1719 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
1720 cris_alu_free_temps(dc, size, t);
1724 static int dec_abs_r(CPUCRISState *env, DisasContext *dc)
1728 LOG_DIS("abs $r%u, $r%u\n",
1730 cris_cc_mask(dc, CC_MASK_NZ);
1732 t0 = tcg_temp_new();
1733 tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
1734 tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
1735 tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
1738 cris_alu(dc, CC_OP_MOVE,
1739 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1743 static int dec_add_r(CPUCRISState *env, DisasContext *dc)
1746 int size = memsize_zz(dc);
1747 LOG_DIS("add.%c $r%u, $r%u\n",
1748 memsize_char(size), dc->op1, dc->op2);
1749 cris_cc_mask(dc, CC_MASK_NZVC);
1750 cris_alu_alloc_temps(dc, size, t);
1751 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1753 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
1754 cris_alu_free_temps(dc, size, t);
1758 static int dec_addc_r(CPUCRISState *env, DisasContext *dc)
1760 LOG_DIS("addc $r%u, $r%u\n",
1762 cris_evaluate_flags(dc);
1763 /* Set for this insn. */
1764 dc->flagx_known = 1;
1765 dc->flags_x = X_FLAG;
1767 cris_cc_mask(dc, CC_MASK_NZVC);
1768 cris_alu(dc, CC_OP_ADDC,
1769 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1773 static int dec_mcp_r(CPUCRISState *env, DisasContext *dc)
1775 LOG_DIS("mcp $p%u, $r%u\n",
1777 cris_evaluate_flags(dc);
1778 cris_cc_mask(dc, CC_MASK_RNZV);
1779 cris_alu(dc, CC_OP_MCP,
1780 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
1785 static char * swapmode_name(int mode, char *modename) {
1788 modename[i++] = 'n';
1791 modename[i++] = 'w';
1794 modename[i++] = 'b';
1797 modename[i++] = 'r';
1804 static int dec_swap_r(CPUCRISState *env, DisasContext *dc)
1810 LOG_DIS("swap%s $r%u\n",
1811 swapmode_name(dc->op2, modename), dc->op1);
1813 cris_cc_mask(dc, CC_MASK_NZ);
1814 t0 = tcg_temp_new();
1815 t_gen_mov_TN_reg(t0, dc->op1);
1817 tcg_gen_not_tl(t0, t0);
1820 t_gen_swapw(t0, t0);
1823 t_gen_swapb(t0, t0);
1826 t_gen_swapr(t0, t0);
1828 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
1833 static int dec_or_r(CPUCRISState *env, DisasContext *dc)
1836 int size = memsize_zz(dc);
1837 LOG_DIS("or.%c $r%u, $r%u\n",
1838 memsize_char(size), dc->op1, dc->op2);
1839 cris_cc_mask(dc, CC_MASK_NZ);
1840 cris_alu_alloc_temps(dc, size, t);
1841 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1842 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
1843 cris_alu_free_temps(dc, size, t);
1847 static int dec_addi_r(CPUCRISState *env, DisasContext *dc)
1850 LOG_DIS("addi.%c $r%u, $r%u\n",
1851 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1852 cris_cc_mask(dc, 0);
1853 t0 = tcg_temp_new();
1854 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1855 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
1860 static int dec_addi_acr(CPUCRISState *env, DisasContext *dc)
1863 LOG_DIS("addi.%c $r%u, $r%u, $acr\n",
1864 memsize_char(memsize_zz(dc)), dc->op2, dc->op1);
1865 cris_cc_mask(dc, 0);
1866 t0 = tcg_temp_new();
1867 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1868 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
1873 static int dec_neg_r(CPUCRISState *env, DisasContext *dc)
1876 int size = memsize_zz(dc);
1877 LOG_DIS("neg.%c $r%u, $r%u\n",
1878 memsize_char(size), dc->op1, dc->op2);
1879 cris_cc_mask(dc, CC_MASK_NZVC);
1880 cris_alu_alloc_temps(dc, size, t);
1881 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1883 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
1884 cris_alu_free_temps(dc, size, t);
1888 static int dec_btst_r(CPUCRISState *env, DisasContext *dc)
1890 LOG_DIS("btst $r%u, $r%u\n",
1892 cris_cc_mask(dc, CC_MASK_NZ);
1893 cris_evaluate_flags(dc);
1894 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2],
1895 cpu_R[dc->op1], cpu_PR[PR_CCS]);
1896 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2],
1897 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1898 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1899 dc->flags_uptodate = 1;
1903 static int dec_sub_r(CPUCRISState *env, DisasContext *dc)
1906 int size = memsize_zz(dc);
1907 LOG_DIS("sub.%c $r%u, $r%u\n",
1908 memsize_char(size), dc->op1, dc->op2);
1909 cris_cc_mask(dc, CC_MASK_NZVC);
1910 cris_alu_alloc_temps(dc, size, t);
1911 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1912 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
1913 cris_alu_free_temps(dc, size, t);
1917 /* Zero extension. From size to dword. */
1918 static int dec_movu_r(CPUCRISState *env, DisasContext *dc)
1921 int size = memsize_z(dc);
1922 LOG_DIS("movu.%c $r%u, $r%u\n",
1926 cris_cc_mask(dc, CC_MASK_NZ);
1927 t0 = tcg_temp_new();
1928 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1929 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1934 /* Sign extension. From size to dword. */
1935 static int dec_movs_r(CPUCRISState *env, DisasContext *dc)
1938 int size = memsize_z(dc);
1939 LOG_DIS("movs.%c $r%u, $r%u\n",
1943 cris_cc_mask(dc, CC_MASK_NZ);
1944 t0 = tcg_temp_new();
1945 /* Size can only be qi or hi. */
1946 t_gen_sext(t0, cpu_R[dc->op1], size);
1947 cris_alu(dc, CC_OP_MOVE,
1948 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
1953 /* zero extension. From size to dword. */
1954 static int dec_addu_r(CPUCRISState *env, DisasContext *dc)
1957 int size = memsize_z(dc);
1958 LOG_DIS("addu.%c $r%u, $r%u\n",
1962 cris_cc_mask(dc, CC_MASK_NZVC);
1963 t0 = tcg_temp_new();
1964 /* Size can only be qi or hi. */
1965 t_gen_zext(t0, cpu_R[dc->op1], size);
1966 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1971 /* Sign extension. From size to dword. */
1972 static int dec_adds_r(CPUCRISState *env, DisasContext *dc)
1975 int size = memsize_z(dc);
1976 LOG_DIS("adds.%c $r%u, $r%u\n",
1980 cris_cc_mask(dc, CC_MASK_NZVC);
1981 t0 = tcg_temp_new();
1982 /* Size can only be qi or hi. */
1983 t_gen_sext(t0, cpu_R[dc->op1], size);
1984 cris_alu(dc, CC_OP_ADD,
1985 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1990 /* Zero extension. From size to dword. */
1991 static int dec_subu_r(CPUCRISState *env, DisasContext *dc)
1994 int size = memsize_z(dc);
1995 LOG_DIS("subu.%c $r%u, $r%u\n",
1999 cris_cc_mask(dc, CC_MASK_NZVC);
2000 t0 = tcg_temp_new();
2001 /* Size can only be qi or hi. */
2002 t_gen_zext(t0, cpu_R[dc->op1], size);
2003 cris_alu(dc, CC_OP_SUB,
2004 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2009 /* Sign extension. From size to dword. */
2010 static int dec_subs_r(CPUCRISState *env, DisasContext *dc)
2013 int size = memsize_z(dc);
2014 LOG_DIS("subs.%c $r%u, $r%u\n",
2018 cris_cc_mask(dc, CC_MASK_NZVC);
2019 t0 = tcg_temp_new();
2020 /* Size can only be qi or hi. */
2021 t_gen_sext(t0, cpu_R[dc->op1], size);
2022 cris_alu(dc, CC_OP_SUB,
2023 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2028 static int dec_setclrf(CPUCRISState *env, DisasContext *dc)
2031 int set = (~dc->opcode >> 2) & 1;
2034 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
2035 | EXTRACT_FIELD(dc->ir, 0, 3);
2036 if (set && flags == 0) {
2039 } else if (!set && (flags & 0x20)) {
2042 LOG_DIS("%sf %x\n", set ? "set" : "clr", flags);
2045 /* User space is not allowed to touch these. Silently ignore. */
2046 if (dc->tb_flags & U_FLAG) {
2047 flags &= ~(S_FLAG | I_FLAG | U_FLAG);
2050 if (flags & X_FLAG) {
2051 dc->flagx_known = 1;
2053 dc->flags_x = X_FLAG;
2059 /* Break the TB if any of the SPI flag changes. */
2060 if (flags & (P_FLAG | S_FLAG)) {
2061 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2062 dc->is_jmp = DISAS_UPDATE;
2063 dc->cpustate_changed = 1;
2066 /* For the I flag, only act on posedge. */
2067 if ((flags & I_FLAG)) {
2068 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2069 dc->is_jmp = DISAS_UPDATE;
2070 dc->cpustate_changed = 1;
2074 /* Simply decode the flags. */
2075 cris_evaluate_flags(dc);
2076 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2077 cris_update_cc_x(dc);
2078 tcg_gen_movi_tl(cc_op, dc->cc_op);
2081 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
2082 /* Enter user mode. */
2083 t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
2084 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
2085 dc->cpustate_changed = 1;
2087 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
2089 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
2092 dc->flags_uptodate = 1;
2097 static int dec_move_rs(CPUCRISState *env, DisasContext *dc)
2099 LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2);
2100 cris_cc_mask(dc, 0);
2101 gen_helper_movl_sreg_reg(cpu_env, tcg_const_tl(dc->op2),
2102 tcg_const_tl(dc->op1));
2105 static int dec_move_sr(CPUCRISState *env, DisasContext *dc)
2107 LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1);
2108 cris_cc_mask(dc, 0);
2109 gen_helper_movl_reg_sreg(cpu_env, tcg_const_tl(dc->op1),
2110 tcg_const_tl(dc->op2));
2114 static int dec_move_rp(CPUCRISState *env, DisasContext *dc)
2117 LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2);
2118 cris_cc_mask(dc, 0);
2120 t[0] = tcg_temp_new();
2121 if (dc->op2 == PR_CCS) {
2122 cris_evaluate_flags(dc);
2123 t_gen_mov_TN_reg(t[0], dc->op1);
2124 if (dc->tb_flags & U_FLAG) {
2125 t[1] = tcg_temp_new();
2126 /* User space is not allowed to touch all flags. */
2127 tcg_gen_andi_tl(t[0], t[0], 0x39f);
2128 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
2129 tcg_gen_or_tl(t[0], t[1], t[0]);
2130 tcg_temp_free(t[1]);
2133 t_gen_mov_TN_reg(t[0], dc->op1);
2136 t_gen_mov_preg_TN(dc, dc->op2, t[0]);
2137 if (dc->op2 == PR_CCS) {
2138 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2139 dc->flags_uptodate = 1;
2141 tcg_temp_free(t[0]);
2144 static int dec_move_pr(CPUCRISState *env, DisasContext *dc)
2147 LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1);
2148 cris_cc_mask(dc, 0);
2150 if (dc->op2 == PR_CCS) {
2151 cris_evaluate_flags(dc);
2154 if (dc->op2 == PR_DZ) {
2155 tcg_gen_movi_tl(cpu_R[dc->op1], 0);
2157 t0 = tcg_temp_new();
2158 t_gen_mov_TN_preg(t0, dc->op2);
2159 cris_alu(dc, CC_OP_MOVE,
2160 cpu_R[dc->op1], cpu_R[dc->op1], t0,
2161 preg_sizes[dc->op2]);
2167 static int dec_move_mr(CPUCRISState *env, DisasContext *dc)
2169 int memsize = memsize_zz(dc);
2171 LOG_DIS("move.%c [$r%u%s, $r%u\n",
2172 memsize_char(memsize),
2173 dc->op1, dc->postinc ? "+]" : "]",
2177 insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]);
2178 cris_cc_mask(dc, CC_MASK_NZ);
2179 cris_update_cc_op(dc, CC_OP_MOVE, 4);
2180 cris_update_cc_x(dc);
2181 cris_update_result(dc, cpu_R[dc->op2]);
2185 t0 = tcg_temp_new();
2186 insn_len = dec_prep_move_m(env, dc, 0, memsize, t0);
2187 cris_cc_mask(dc, CC_MASK_NZ);
2188 cris_alu(dc, CC_OP_MOVE,
2189 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
2192 do_postinc(dc, memsize);
2196 static inline void cris_alu_m_alloc_temps(TCGv *t)
2198 t[0] = tcg_temp_new();
2199 t[1] = tcg_temp_new();
2202 static inline void cris_alu_m_free_temps(TCGv *t)
2204 tcg_temp_free(t[0]);
2205 tcg_temp_free(t[1]);
2208 static int dec_movs_m(CPUCRISState *env, DisasContext *dc)
2211 int memsize = memsize_z(dc);
2213 LOG_DIS("movs.%c [$r%u%s, $r%u\n",
2214 memsize_char(memsize),
2215 dc->op1, dc->postinc ? "+]" : "]",
2218 cris_alu_m_alloc_temps(t);
2220 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2221 cris_cc_mask(dc, CC_MASK_NZ);
2222 cris_alu(dc, CC_OP_MOVE,
2223 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2224 do_postinc(dc, memsize);
2225 cris_alu_m_free_temps(t);
2229 static int dec_addu_m(CPUCRISState *env, DisasContext *dc)
2232 int memsize = memsize_z(dc);
2234 LOG_DIS("addu.%c [$r%u%s, $r%u\n",
2235 memsize_char(memsize),
2236 dc->op1, dc->postinc ? "+]" : "]",
2239 cris_alu_m_alloc_temps(t);
2241 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2242 cris_cc_mask(dc, CC_MASK_NZVC);
2243 cris_alu(dc, CC_OP_ADD,
2244 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2245 do_postinc(dc, memsize);
2246 cris_alu_m_free_temps(t);
2250 static int dec_adds_m(CPUCRISState *env, DisasContext *dc)
2253 int memsize = memsize_z(dc);
2255 LOG_DIS("adds.%c [$r%u%s, $r%u\n",
2256 memsize_char(memsize),
2257 dc->op1, dc->postinc ? "+]" : "]",
2260 cris_alu_m_alloc_temps(t);
2262 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2263 cris_cc_mask(dc, CC_MASK_NZVC);
2264 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2265 do_postinc(dc, memsize);
2266 cris_alu_m_free_temps(t);
2270 static int dec_subu_m(CPUCRISState *env, DisasContext *dc)
2273 int memsize = memsize_z(dc);
2275 LOG_DIS("subu.%c [$r%u%s, $r%u\n",
2276 memsize_char(memsize),
2277 dc->op1, dc->postinc ? "+]" : "]",
2280 cris_alu_m_alloc_temps(t);
2282 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2283 cris_cc_mask(dc, CC_MASK_NZVC);
2284 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2285 do_postinc(dc, memsize);
2286 cris_alu_m_free_temps(t);
2290 static int dec_subs_m(CPUCRISState *env, DisasContext *dc)
2293 int memsize = memsize_z(dc);
2295 LOG_DIS("subs.%c [$r%u%s, $r%u\n",
2296 memsize_char(memsize),
2297 dc->op1, dc->postinc ? "+]" : "]",
2300 cris_alu_m_alloc_temps(t);
2302 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2303 cris_cc_mask(dc, CC_MASK_NZVC);
2304 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2305 do_postinc(dc, memsize);
2306 cris_alu_m_free_temps(t);
2310 static int dec_movu_m(CPUCRISState *env, DisasContext *dc)
2313 int memsize = memsize_z(dc);
2316 LOG_DIS("movu.%c [$r%u%s, $r%u\n",
2317 memsize_char(memsize),
2318 dc->op1, dc->postinc ? "+]" : "]",
2321 cris_alu_m_alloc_temps(t);
2322 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2323 cris_cc_mask(dc, CC_MASK_NZ);
2324 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2325 do_postinc(dc, memsize);
2326 cris_alu_m_free_temps(t);
2330 static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc)
2333 int memsize = memsize_z(dc);
2335 LOG_DIS("cmpu.%c [$r%u%s, $r%u\n",
2336 memsize_char(memsize),
2337 dc->op1, dc->postinc ? "+]" : "]",
2340 cris_alu_m_alloc_temps(t);
2341 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2342 cris_cc_mask(dc, CC_MASK_NZVC);
2343 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2344 do_postinc(dc, memsize);
2345 cris_alu_m_free_temps(t);
2349 static int dec_cmps_m(CPUCRISState *env, DisasContext *dc)
2352 int memsize = memsize_z(dc);
2354 LOG_DIS("cmps.%c [$r%u%s, $r%u\n",
2355 memsize_char(memsize),
2356 dc->op1, dc->postinc ? "+]" : "]",
2359 cris_alu_m_alloc_temps(t);
2360 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2361 cris_cc_mask(dc, CC_MASK_NZVC);
2362 cris_alu(dc, CC_OP_CMP,
2363 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2365 do_postinc(dc, memsize);
2366 cris_alu_m_free_temps(t);
2370 static int dec_cmp_m(CPUCRISState *env, DisasContext *dc)
2373 int memsize = memsize_zz(dc);
2375 LOG_DIS("cmp.%c [$r%u%s, $r%u\n",
2376 memsize_char(memsize),
2377 dc->op1, dc->postinc ? "+]" : "]",
2380 cris_alu_m_alloc_temps(t);
2381 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2382 cris_cc_mask(dc, CC_MASK_NZVC);
2383 cris_alu(dc, CC_OP_CMP,
2384 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2386 do_postinc(dc, memsize);
2387 cris_alu_m_free_temps(t);
2391 static int dec_test_m(CPUCRISState *env, DisasContext *dc)
2394 int memsize = memsize_zz(dc);
2396 LOG_DIS("test.%c [$r%u%s] op2=%x\n",
2397 memsize_char(memsize),
2398 dc->op1, dc->postinc ? "+]" : "]",
2401 cris_evaluate_flags(dc);
2403 cris_alu_m_alloc_temps(t);
2404 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2405 cris_cc_mask(dc, CC_MASK_NZ);
2406 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
2408 cris_alu(dc, CC_OP_CMP,
2409 cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
2410 do_postinc(dc, memsize);
2411 cris_alu_m_free_temps(t);
2415 static int dec_and_m(CPUCRISState *env, DisasContext *dc)
2418 int memsize = memsize_zz(dc);
2420 LOG_DIS("and.%c [$r%u%s, $r%u\n",
2421 memsize_char(memsize),
2422 dc->op1, dc->postinc ? "+]" : "]",
2425 cris_alu_m_alloc_temps(t);
2426 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2427 cris_cc_mask(dc, CC_MASK_NZ);
2428 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2429 do_postinc(dc, memsize);
2430 cris_alu_m_free_temps(t);
2434 static int dec_add_m(CPUCRISState *env, DisasContext *dc)
2437 int memsize = memsize_zz(dc);
2439 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2440 memsize_char(memsize),
2441 dc->op1, dc->postinc ? "+]" : "]",
2444 cris_alu_m_alloc_temps(t);
2445 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2446 cris_cc_mask(dc, CC_MASK_NZVC);
2447 cris_alu(dc, CC_OP_ADD,
2448 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2449 do_postinc(dc, memsize);
2450 cris_alu_m_free_temps(t);
2454 static int dec_addo_m(CPUCRISState *env, DisasContext *dc)
2457 int memsize = memsize_zz(dc);
2459 LOG_DIS("add.%c [$r%u%s, $r%u\n",
2460 memsize_char(memsize),
2461 dc->op1, dc->postinc ? "+]" : "]",
2464 cris_alu_m_alloc_temps(t);
2465 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]);
2466 cris_cc_mask(dc, 0);
2467 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
2468 do_postinc(dc, memsize);
2469 cris_alu_m_free_temps(t);
2473 static int dec_bound_m(CPUCRISState *env, DisasContext *dc)
2476 int memsize = memsize_zz(dc);
2478 LOG_DIS("bound.%c [$r%u%s, $r%u\n",
2479 memsize_char(memsize),
2480 dc->op1, dc->postinc ? "+]" : "]",
2483 l[0] = tcg_temp_local_new();
2484 l[1] = tcg_temp_local_new();
2485 insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]);
2486 cris_cc_mask(dc, CC_MASK_NZ);
2487 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
2488 do_postinc(dc, memsize);
2489 tcg_temp_free(l[0]);
2490 tcg_temp_free(l[1]);
2494 static int dec_addc_mr(CPUCRISState *env, DisasContext *dc)
2498 LOG_DIS("addc [$r%u%s, $r%u\n",
2499 dc->op1, dc->postinc ? "+]" : "]",
2502 cris_evaluate_flags(dc);
2504 /* Set for this insn. */
2505 dc->flagx_known = 1;
2506 dc->flags_x = X_FLAG;
2508 cris_alu_m_alloc_temps(t);
2509 insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]);
2510 cris_cc_mask(dc, CC_MASK_NZVC);
2511 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
2513 cris_alu_m_free_temps(t);
2517 static int dec_sub_m(CPUCRISState *env, DisasContext *dc)
2520 int memsize = memsize_zz(dc);
2522 LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
2523 memsize_char(memsize),
2524 dc->op1, dc->postinc ? "+]" : "]",
2525 dc->op2, dc->ir, dc->zzsize);
2527 cris_alu_m_alloc_temps(t);
2528 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2529 cris_cc_mask(dc, CC_MASK_NZVC);
2530 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
2531 do_postinc(dc, memsize);
2532 cris_alu_m_free_temps(t);
2536 static int dec_or_m(CPUCRISState *env, DisasContext *dc)
2539 int memsize = memsize_zz(dc);
2541 LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n",
2542 memsize_char(memsize),
2543 dc->op1, dc->postinc ? "+]" : "]",
2546 cris_alu_m_alloc_temps(t);
2547 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2548 cris_cc_mask(dc, CC_MASK_NZ);
2549 cris_alu(dc, CC_OP_OR,
2550 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2551 do_postinc(dc, memsize);
2552 cris_alu_m_free_temps(t);
2556 static int dec_move_mp(CPUCRISState *env, DisasContext *dc)
2559 int memsize = memsize_zz(dc);
2562 LOG_DIS("move.%c [$r%u%s, $p%u\n",
2563 memsize_char(memsize),
2565 dc->postinc ? "+]" : "]",
2568 cris_alu_m_alloc_temps(t);
2569 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]);
2570 cris_cc_mask(dc, 0);
2571 if (dc->op2 == PR_CCS) {
2572 cris_evaluate_flags(dc);
2573 if (dc->tb_flags & U_FLAG) {
2574 /* User space is not allowed to touch all flags. */
2575 tcg_gen_andi_tl(t[1], t[1], 0x39f);
2576 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
2577 tcg_gen_or_tl(t[1], t[0], t[1]);
2581 t_gen_mov_preg_TN(dc, dc->op2, t[1]);
2583 do_postinc(dc, memsize);
2584 cris_alu_m_free_temps(t);
2588 static int dec_move_pm(CPUCRISState *env, DisasContext *dc)
2593 memsize = preg_sizes[dc->op2];
2595 LOG_DIS("move.%c $p%u, [$r%u%s\n",
2596 memsize_char(memsize),
2597 dc->op2, dc->op1, dc->postinc ? "+]" : "]");
2599 /* prepare store. Address in T0, value in T1. */
2600 if (dc->op2 == PR_CCS) {
2601 cris_evaluate_flags(dc);
2603 t0 = tcg_temp_new();
2604 t_gen_mov_TN_preg(t0, dc->op2);
2605 cris_flush_cc_state(dc);
2606 gen_store(dc, cpu_R[dc->op1], t0, memsize);
2609 cris_cc_mask(dc, 0);
2611 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2616 static int dec_movem_mr(CPUCRISState *env, DisasContext *dc)
2622 int nr = dc->op2 + 1;
2624 LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1,
2625 dc->postinc ? "+]" : "]", dc->op2);
2627 addr = tcg_temp_new();
2628 /* There are probably better ways of doing this. */
2629 cris_flush_cc_state(dc);
2630 for (i = 0; i < (nr >> 1); i++) {
2631 tmp[i] = tcg_temp_new_i64();
2632 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2633 gen_load64(dc, tmp[i], addr);
2636 tmp32 = tcg_temp_new_i32();
2637 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2638 gen_load(dc, tmp32, addr, 4, 0);
2642 tcg_temp_free(addr);
2644 for (i = 0; i < (nr >> 1); i++) {
2645 tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
2646 tcg_gen_shri_i64(tmp[i], tmp[i], 32);
2647 tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
2648 tcg_temp_free_i64(tmp[i]);
2651 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
2652 tcg_temp_free(tmp32);
2655 /* writeback the updated pointer value. */
2657 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
2660 /* gen_load might want to evaluate the previous insns flags. */
2661 cris_cc_mask(dc, 0);
2665 static int dec_movem_rm(CPUCRISState *env, DisasContext *dc)
2671 LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
2672 dc->postinc ? "+]" : "]");
2674 cris_flush_cc_state(dc);
2676 tmp = tcg_temp_new();
2677 addr = tcg_temp_new();
2678 tcg_gen_movi_tl(tmp, 4);
2679 tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
2680 for (i = 0; i <= dc->op2; i++) {
2681 /* Displace addr. */
2682 /* Perform the store. */
2683 gen_store(dc, addr, cpu_R[i], 4);
2684 tcg_gen_add_tl(addr, addr, tmp);
2687 tcg_gen_mov_tl(cpu_R[dc->op1], addr);
2689 cris_cc_mask(dc, 0);
2691 tcg_temp_free(addr);
2695 static int dec_move_rm(CPUCRISState *env, DisasContext *dc)
2699 memsize = memsize_zz(dc);
2701 LOG_DIS("move.%c $r%u, [$r%u]\n",
2702 memsize_char(memsize), dc->op2, dc->op1);
2704 /* prepare store. */
2705 cris_flush_cc_state(dc);
2706 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
2709 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2711 cris_cc_mask(dc, 0);
2715 static int dec_lapcq(CPUCRISState *env, DisasContext *dc)
2717 LOG_DIS("lapcq %x, $r%u\n",
2718 dc->pc + dc->op1*2, dc->op2);
2719 cris_cc_mask(dc, 0);
2720 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
2724 static int dec_lapc_im(CPUCRISState *env, DisasContext *dc)
2732 cris_cc_mask(dc, 0);
2733 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2734 LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2);
2738 tcg_gen_movi_tl(cpu_R[rd], pc);
2742 /* Jump to special reg. */
2743 static int dec_jump_p(CPUCRISState *env, DisasContext *dc)
2745 LOG_DIS("jump $p%u\n", dc->op2);
2747 if (dc->op2 == PR_CCS) {
2748 cris_evaluate_flags(dc);
2750 t_gen_mov_TN_preg(env_btarget, dc->op2);
2751 /* rete will often have low bit set to indicate delayslot. */
2752 tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
2753 cris_cc_mask(dc, 0);
2754 cris_prepare_jmp(dc, JMP_INDIRECT);
2758 /* Jump and save. */
2759 static int dec_jas_r(CPUCRISState *env, DisasContext *dc)
2761 LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2);
2762 cris_cc_mask(dc, 0);
2763 /* Store the return address in Pd. */
2764 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2768 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
2770 cris_prepare_jmp(dc, JMP_INDIRECT);
2774 static int dec_jas_im(CPUCRISState *env, DisasContext *dc)
2778 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2780 LOG_DIS("jas 0x%x\n", imm);
2781 cris_cc_mask(dc, 0);
2782 /* Store the return address in Pd. */
2783 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2786 cris_prepare_jmp(dc, JMP_DIRECT);
2790 static int dec_jasc_im(CPUCRISState *env, DisasContext *dc)
2794 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2796 LOG_DIS("jasc 0x%x\n", imm);
2797 cris_cc_mask(dc, 0);
2798 /* Store the return address in Pd. */
2799 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
2802 cris_prepare_jmp(dc, JMP_DIRECT);
2806 static int dec_jasc_r(CPUCRISState *env, DisasContext *dc)
2808 LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2);
2809 cris_cc_mask(dc, 0);
2810 /* Store the return address in Pd. */
2811 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2812 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
2813 cris_prepare_jmp(dc, JMP_INDIRECT);
2817 static int dec_bcc_im(CPUCRISState *env, DisasContext *dc)
2820 uint32_t cond = dc->op2;
2822 offset = cris_fetch(env, dc, dc->pc + 2, 2, 1);
2824 LOG_DIS("b%s %d pc=%x dst=%x\n",
2825 cc_name(cond), offset,
2826 dc->pc, dc->pc + offset);
2828 cris_cc_mask(dc, 0);
2829 /* op2 holds the condition-code. */
2830 cris_prepare_cc_branch(dc, offset, cond);
2834 static int dec_bas_im(CPUCRISState *env, DisasContext *dc)
2838 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2840 LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2841 cris_cc_mask(dc, 0);
2842 /* Store the return address in Pd. */
2843 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2845 dc->jmp_pc = dc->pc + simm;
2846 cris_prepare_jmp(dc, JMP_DIRECT);
2850 static int dec_basc_im(CPUCRISState *env, DisasContext *dc)
2853 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0);
2855 LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2);
2856 cris_cc_mask(dc, 0);
2857 /* Store the return address in Pd. */
2858 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
2860 dc->jmp_pc = dc->pc + simm;
2861 cris_prepare_jmp(dc, JMP_DIRECT);
2865 static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc)
2867 cris_cc_mask(dc, 0);
2869 if (dc->op2 == 15) {
2870 tcg_gen_st_i32(tcg_const_i32(1), cpu_env,
2871 -offsetof(CRISCPU, env) + offsetof(CPUState, halted));
2872 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2873 t_gen_raise_exception(EXCP_HLT);
2877 switch (dc->op2 & 7) {
2881 cris_evaluate_flags(dc);
2882 gen_helper_rfe(cpu_env);
2883 dc->is_jmp = DISAS_UPDATE;
2888 cris_evaluate_flags(dc);
2889 gen_helper_rfn(cpu_env);
2890 dc->is_jmp = DISAS_UPDATE;
2893 LOG_DIS("break %d\n", dc->op1);
2894 cris_evaluate_flags(dc);
2896 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2898 /* Breaks start at 16 in the exception vector. */
2899 t_gen_mov_env_TN(trap_vector,
2900 tcg_const_tl(dc->op1 + 16));
2901 t_gen_raise_exception(EXCP_BREAK);
2902 dc->is_jmp = DISAS_UPDATE;
2905 printf("op2=%x\n", dc->op2);
2913 static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc)
2918 static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc)
2923 static int dec_null(CPUCRISState *env, DisasContext *dc)
2925 printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
2926 dc->pc, dc->opcode, dc->op1, dc->op2);
2932 static struct decoder_info {
2937 int (*dec)(CPUCRISState *env, DisasContext *dc);
2939 /* Order matters here. */
2940 {DEC_MOVEQ, dec_moveq},
2941 {DEC_BTSTQ, dec_btstq},
2942 {DEC_CMPQ, dec_cmpq},
2943 {DEC_ADDOQ, dec_addoq},
2944 {DEC_ADDQ, dec_addq},
2945 {DEC_SUBQ, dec_subq},
2946 {DEC_ANDQ, dec_andq},
2948 {DEC_ASRQ, dec_asrq},
2949 {DEC_LSLQ, dec_lslq},
2950 {DEC_LSRQ, dec_lsrq},
2951 {DEC_BCCQ, dec_bccq},
2953 {DEC_BCC_IM, dec_bcc_im},
2954 {DEC_JAS_IM, dec_jas_im},
2955 {DEC_JAS_R, dec_jas_r},
2956 {DEC_JASC_IM, dec_jasc_im},
2957 {DEC_JASC_R, dec_jasc_r},
2958 {DEC_BAS_IM, dec_bas_im},
2959 {DEC_BASC_IM, dec_basc_im},
2960 {DEC_JUMP_P, dec_jump_p},
2961 {DEC_LAPC_IM, dec_lapc_im},
2962 {DEC_LAPCQ, dec_lapcq},
2964 {DEC_RFE_ETC, dec_rfe_etc},
2965 {DEC_ADDC_MR, dec_addc_mr},
2967 {DEC_MOVE_MP, dec_move_mp},
2968 {DEC_MOVE_PM, dec_move_pm},
2969 {DEC_MOVEM_MR, dec_movem_mr},
2970 {DEC_MOVEM_RM, dec_movem_rm},
2971 {DEC_MOVE_PR, dec_move_pr},
2972 {DEC_SCC_R, dec_scc_r},
2973 {DEC_SETF, dec_setclrf},
2974 {DEC_CLEARF, dec_setclrf},
2976 {DEC_MOVE_SR, dec_move_sr},
2977 {DEC_MOVE_RP, dec_move_rp},
2978 {DEC_SWAP_R, dec_swap_r},
2979 {DEC_ABS_R, dec_abs_r},
2980 {DEC_LZ_R, dec_lz_r},
2981 {DEC_MOVE_RS, dec_move_rs},
2982 {DEC_BTST_R, dec_btst_r},
2983 {DEC_ADDC_R, dec_addc_r},
2985 {DEC_DSTEP_R, dec_dstep_r},
2986 {DEC_XOR_R, dec_xor_r},
2987 {DEC_MCP_R, dec_mcp_r},
2988 {DEC_CMP_R, dec_cmp_r},
2990 {DEC_ADDI_R, dec_addi_r},
2991 {DEC_ADDI_ACR, dec_addi_acr},
2993 {DEC_ADD_R, dec_add_r},
2994 {DEC_SUB_R, dec_sub_r},
2996 {DEC_ADDU_R, dec_addu_r},
2997 {DEC_ADDS_R, dec_adds_r},
2998 {DEC_SUBU_R, dec_subu_r},
2999 {DEC_SUBS_R, dec_subs_r},
3000 {DEC_LSL_R, dec_lsl_r},
3002 {DEC_AND_R, dec_and_r},
3003 {DEC_OR_R, dec_or_r},
3004 {DEC_BOUND_R, dec_bound_r},
3005 {DEC_ASR_R, dec_asr_r},
3006 {DEC_LSR_R, dec_lsr_r},
3008 {DEC_MOVU_R, dec_movu_r},
3009 {DEC_MOVS_R, dec_movs_r},
3010 {DEC_NEG_R, dec_neg_r},
3011 {DEC_MOVE_R, dec_move_r},
3013 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
3014 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
3016 {DEC_MULS_R, dec_muls_r},
3017 {DEC_MULU_R, dec_mulu_r},
3019 {DEC_ADDU_M, dec_addu_m},
3020 {DEC_ADDS_M, dec_adds_m},
3021 {DEC_SUBU_M, dec_subu_m},
3022 {DEC_SUBS_M, dec_subs_m},
3024 {DEC_CMPU_M, dec_cmpu_m},
3025 {DEC_CMPS_M, dec_cmps_m},
3026 {DEC_MOVU_M, dec_movu_m},
3027 {DEC_MOVS_M, dec_movs_m},
3029 {DEC_CMP_M, dec_cmp_m},
3030 {DEC_ADDO_M, dec_addo_m},
3031 {DEC_BOUND_M, dec_bound_m},
3032 {DEC_ADD_M, dec_add_m},
3033 {DEC_SUB_M, dec_sub_m},
3034 {DEC_AND_M, dec_and_m},
3035 {DEC_OR_M, dec_or_m},
3036 {DEC_MOVE_RM, dec_move_rm},
3037 {DEC_TEST_M, dec_test_m},
3038 {DEC_MOVE_MR, dec_move_mr},
3043 static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc)
3048 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
3049 tcg_gen_debug_insn_start(dc->pc);
3052 /* Load a halfword onto the instruction register. */
3053 dc->ir = cris_fetch(env, dc, dc->pc, 2, 0);
3055 /* Now decode it. */
3056 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
3057 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
3058 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
3059 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
3060 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
3061 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
3063 /* Large switch for all insns. */
3064 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
3065 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) {
3066 insn_len = decinfo[i].dec(env, dc);
3071 #if !defined(CONFIG_USER_ONLY)
3072 /* Single-stepping ? */
3073 if (dc->tb_flags & S_FLAG) {
3076 l1 = gen_new_label();
3077 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
3078 /* We treat SPC as a break with an odd trap vector. */
3079 cris_evaluate_flags(dc);
3080 t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
3081 tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
3082 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
3083 t_gen_raise_exception(EXCP_BREAK);
3090 static void check_breakpoint(CPUCRISState *env, DisasContext *dc)
3092 CPUState *cs = CPU(cris_env_get_cpu(env));
3095 if (unlikely(!QTAILQ_EMPTY(&cs->breakpoints))) {
3096 QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
3097 if (bp->pc == dc->pc) {
3098 cris_evaluate_flags(dc);
3099 tcg_gen_movi_tl(env_pc, dc->pc);
3100 t_gen_raise_exception(EXCP_DEBUG);
3101 dc->is_jmp = DISAS_UPDATE;
3107 #include "translate_v10.c"
3110 * Delay slots on QEMU/CRIS.
3112 * If an exception hits on a delayslot, the core will let ERP (the Exception
3113 * Return Pointer) point to the branch (the previous) insn and set the lsb to
3114 * to give SW a hint that the exception actually hit on the dslot.
3116 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
3117 * the core and any jmp to an odd addresses will mask off that lsb. It is
3118 * simply there to let sw know there was an exception on a dslot.
3120 * When the software returns from an exception, the branch will re-execute.
3121 * On QEMU care needs to be taken when a branch+delayslot sequence is broken
3122 * and the branch and delayslot dont share pages.
3124 * The TB contaning the branch insn will set up env->btarget and evaluate
3125 * env->btaken. When the translation loop exits we will note that the branch
3126 * sequence is broken and let env->dslot be the size of the branch insn (those
3129 * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
3130 * set). It will also expect to have env->dslot setup with the size of the
3131 * delay slot so that env->pc - env->dslot point to the branch insn. This TB
3132 * will execute the dslot and take the branch, either to btarget or just one
3135 * When exceptions occur, we check for env->dslot in do_interrupt to detect
3136 * broken branch sequences and setup $erp accordingly (i.e let it point to the
3137 * branch and set lsb). Then env->dslot gets cleared so that the exception
3138 * handler can enter. When returning from exceptions (jump $erp) the lsb gets
3139 * masked off and we will reexecute the branch insn.
3143 /* generate intermediate code for basic block 'tb'. */
3145 gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
3148 CPUState *cs = CPU(cpu);
3149 CPUCRISState *env = &cpu->env;
3150 uint16_t *gen_opc_end;
3152 unsigned int insn_len;
3154 struct DisasContext ctx;
3155 struct DisasContext *dc = &ctx;
3156 uint32_t next_page_start;
3161 if (env->pregs[PR_VR] == 32) {
3162 dc->decoder = crisv32_decoder;
3163 dc->clear_locked_irq = 0;
3165 dc->decoder = crisv10_decoder;
3166 dc->clear_locked_irq = 1;
3169 /* Odd PC indicates that branch is rexecuting due to exception in the
3170 * delayslot, like in real hw.
3172 pc_start = tb->pc & ~1;
3176 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
3178 dc->is_jmp = DISAS_NEXT;
3181 dc->singlestep_enabled = cs->singlestep_enabled;
3182 dc->flags_uptodate = 1;
3183 dc->flagx_known = 1;
3184 dc->flags_x = tb->flags & X_FLAG;
3185 dc->cc_x_uptodate = 0;
3188 dc->clear_prefix = 0;
3190 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
3191 dc->cc_size_uptodate = -1;
3193 /* Decode TB flags. */
3194 dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \
3195 | X_FLAG | PFIX_FLAG);
3196 dc->delayed_branch = !!(tb->flags & 7);
3197 if (dc->delayed_branch) {
3198 dc->jmp = JMP_INDIRECT;
3200 dc->jmp = JMP_NOJMP;
3203 dc->cpustate_changed = 0;
3205 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3207 "srch=%d pc=%x %x flg=%" PRIx64 " bt=%x ds=%u ccs=%x\n"
3213 search_pc, dc->pc, dc->ppc,
3214 (uint64_t)tb->flags,
3215 env->btarget, (unsigned)tb->flags & 7,
3217 env->pregs[PR_PID], env->pregs[PR_USP],
3218 env->regs[0], env->regs[1], env->regs[2], env->regs[3],
3219 env->regs[4], env->regs[5], env->regs[6], env->regs[7],
3220 env->regs[8], env->regs[9],
3221 env->regs[10], env->regs[11],
3222 env->regs[12], env->regs[13],
3223 env->regs[14], env->regs[15]);
3224 qemu_log("--------------\n");
3225 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3228 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3231 max_insns = tb->cflags & CF_COUNT_MASK;
3232 if (max_insns == 0) {
3233 max_insns = CF_COUNT_MASK;
3238 check_breakpoint(env, dc);
3241 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3245 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3248 if (dc->delayed_branch == 1) {
3249 tcg_ctx.gen_opc_pc[lj] = dc->ppc | 1;
3251 tcg_ctx.gen_opc_pc[lj] = dc->pc;
3253 tcg_ctx.gen_opc_instr_start[lj] = 1;
3254 tcg_ctx.gen_opc_icount[lj] = num_insns;
3258 LOG_DIS("%8.8x:\t", dc->pc);
3260 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
3265 insn_len = dc->decoder(env, dc);
3269 cris_clear_x_flag(dc);
3273 /* Check for delayed branches here. If we do it before
3274 actually generating any host code, the simulator will just
3275 loop doing nothing for on this program location. */
3276 if (dc->delayed_branch) {
3277 dc->delayed_branch--;
3278 if (dc->delayed_branch == 0) {
3279 if (tb->flags & 7) {
3280 t_gen_mov_env_TN(dslot, tcg_const_tl(0));
3282 if (dc->cpustate_changed || !dc->flagx_known
3283 || (dc->flags_x != (tb->flags & X_FLAG))) {
3284 cris_store_direct_jmp(dc);
3287 if (dc->clear_locked_irq) {
3288 dc->clear_locked_irq = 0;
3289 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3292 if (dc->jmp == JMP_DIRECT_CC) {
3295 l1 = gen_new_label();
3296 cris_evaluate_flags(dc);
3298 /* Conditional jmp. */
3299 tcg_gen_brcondi_tl(TCG_COND_EQ,
3301 gen_goto_tb(dc, 1, dc->jmp_pc);
3303 gen_goto_tb(dc, 0, dc->pc);
3304 dc->is_jmp = DISAS_TB_JUMP;
3305 dc->jmp = JMP_NOJMP;
3306 } else if (dc->jmp == JMP_DIRECT) {
3307 cris_evaluate_flags(dc);
3308 gen_goto_tb(dc, 0, dc->jmp_pc);
3309 dc->is_jmp = DISAS_TB_JUMP;
3310 dc->jmp = JMP_NOJMP;
3312 t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc));
3313 dc->is_jmp = DISAS_JUMP;
3319 /* If we are rexecuting a branch due to exceptions on
3320 delay slots dont break. */
3321 if (!(tb->pc & 1) && cs->singlestep_enabled) {
3324 } while (!dc->is_jmp && !dc->cpustate_changed
3325 && tcg_ctx.gen_opc_ptr < gen_opc_end
3327 && (dc->pc < next_page_start)
3328 && num_insns < max_insns);
3330 if (dc->clear_locked_irq) {
3331 t_gen_mov_env_TN(locked_irq, tcg_const_tl(0));
3336 if (tb->cflags & CF_LAST_IO)
3338 /* Force an update if the per-tb cpu state has changed. */
3339 if (dc->is_jmp == DISAS_NEXT
3340 && (dc->cpustate_changed || !dc->flagx_known
3341 || (dc->flags_x != (tb->flags & X_FLAG)))) {
3342 dc->is_jmp = DISAS_UPDATE;
3343 tcg_gen_movi_tl(env_pc, npc);
3345 /* Broken branch+delayslot sequence. */
3346 if (dc->delayed_branch == 1) {
3347 /* Set env->dslot to the size of the branch insn. */
3348 t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
3349 cris_store_direct_jmp(dc);
3352 cris_evaluate_flags(dc);
3354 if (unlikely(cs->singlestep_enabled)) {
3355 if (dc->is_jmp == DISAS_NEXT) {
3356 tcg_gen_movi_tl(env_pc, npc);
3358 t_gen_raise_exception(EXCP_DEBUG);
3360 switch (dc->is_jmp) {
3362 gen_goto_tb(dc, 1, npc);
3367 /* indicate that the hash table must be used
3368 to find the next TB */
3373 /* nothing more to generate */
3377 gen_tb_end(tb, num_insns);
3378 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
3380 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
3383 tcg_ctx.gen_opc_instr_start[lj++] = 0;
3386 tb->size = dc->pc - pc_start;
3387 tb->icount = num_insns;
3392 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3393 log_target_disas(env, pc_start, dc->pc - pc_start,
3394 dc->env->pregs[PR_VR]);
3395 qemu_log("\nisize=%d osize=%td\n",
3396 dc->pc - pc_start, tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf);
3402 void gen_intermediate_code (CPUCRISState *env, struct TranslationBlock *tb)
3404 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, false);
3407 void gen_intermediate_code_pc (CPUCRISState *env, struct TranslationBlock *tb)
3409 gen_intermediate_code_internal(cris_env_get_cpu(env), tb, true);
3412 void cris_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
3415 CRISCPU *cpu = CRIS_CPU(cs);
3416 CPUCRISState *env = &cpu->env;
3424 cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
3425 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
3426 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
3428 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
3431 for (i = 0; i < 16; i++) {
3432 cpu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]);
3433 if ((i + 1) % 4 == 0) {
3434 cpu_fprintf(f, "\n");
3437 cpu_fprintf(f, "\nspecial regs:\n");
3438 for (i = 0; i < 16; i++) {
3439 cpu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]);
3440 if ((i + 1) % 4 == 0) {
3441 cpu_fprintf(f, "\n");
3444 srs = env->pregs[PR_SRS];
3445 cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
3446 if (srs < ARRAY_SIZE(env->sregs)) {
3447 for (i = 0; i < 16; i++) {
3448 cpu_fprintf(f, "s%2.2d=%8.8x ",
3449 i, env->sregs[srs][i]);
3450 if ((i + 1) % 4 == 0) {
3451 cpu_fprintf(f, "\n");
3455 cpu_fprintf(f, "\n\n");
3459 void cris_initialize_tcg(void)
3463 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
3464 cc_x = tcg_global_mem_new(TCG_AREG0,
3465 offsetof(CPUCRISState, cc_x), "cc_x");
3466 cc_src = tcg_global_mem_new(TCG_AREG0,
3467 offsetof(CPUCRISState, cc_src), "cc_src");
3468 cc_dest = tcg_global_mem_new(TCG_AREG0,
3469 offsetof(CPUCRISState, cc_dest),
3471 cc_result = tcg_global_mem_new(TCG_AREG0,
3472 offsetof(CPUCRISState, cc_result),
3474 cc_op = tcg_global_mem_new(TCG_AREG0,
3475 offsetof(CPUCRISState, cc_op), "cc_op");
3476 cc_size = tcg_global_mem_new(TCG_AREG0,
3477 offsetof(CPUCRISState, cc_size),
3479 cc_mask = tcg_global_mem_new(TCG_AREG0,
3480 offsetof(CPUCRISState, cc_mask),
3483 env_pc = tcg_global_mem_new(TCG_AREG0,
3484 offsetof(CPUCRISState, pc),
3486 env_btarget = tcg_global_mem_new(TCG_AREG0,
3487 offsetof(CPUCRISState, btarget),
3489 env_btaken = tcg_global_mem_new(TCG_AREG0,
3490 offsetof(CPUCRISState, btaken),
3492 for (i = 0; i < 16; i++) {
3493 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
3494 offsetof(CPUCRISState, regs[i]),
3497 for (i = 0; i < 16; i++) {
3498 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
3499 offsetof(CPUCRISState, pregs[i]),
3504 void restore_state_to_opc(CPUCRISState *env, TranslationBlock *tb, int pc_pos)
3506 env->pc = tcg_ctx.gen_opc_pc[pc_pos];