2 * RISC-V translation routines for the RV64F Standard Extension.
4 * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
5 * Copyright (c) 2018 Peer Adelt, peer.adelt@hni.uni-paderborn.de
6 * Bastian Koppelmann, kbastian@mail.uni-paderborn.de
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2 or later, as published by the Free Software Foundation.
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program. If not, see <http://www.gnu.org/licenses/>.
21 #define REQUIRE_FPU do {\
22 if (ctx->mstatus_fs == 0) \
23 if (!ctx->cfg_ptr->ext_zfinx) \
27 #define REQUIRE_ZFINX_OR_F(ctx) do {\
28 if (!ctx->cfg_ptr->ext_zfinx) { \
29 REQUIRE_EXT(ctx, RVF); \
33 static bool trans_flw(DisasContext *ctx, arg_flw *a)
39 REQUIRE_EXT(ctx, RVF);
41 addr = get_address(ctx, a->rs1, a->imm);
42 dest = cpu_fpr[a->rd];
43 tcg_gen_qemu_ld_i64(dest, addr, ctx->mem_idx, MO_TEUL);
44 gen_nanbox_s(dest, dest);
50 static bool trans_fsw(DisasContext *ctx, arg_fsw *a)
55 REQUIRE_EXT(ctx, RVF);
57 addr = get_address(ctx, a->rs1, a->imm);
58 tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], addr, ctx->mem_idx, MO_TEUL);
62 static bool trans_fmadd_s(DisasContext *ctx, arg_fmadd_s *a)
65 REQUIRE_ZFINX_OR_F(ctx);
67 TCGv_i64 dest = dest_fpr(ctx, a->rd);
68 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
69 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
70 TCGv_i64 src3 = get_fpr_hs(ctx, a->rs3);
72 gen_set_rm(ctx, a->rm);
73 gen_helper_fmadd_s(dest, cpu_env, src1, src2, src3);
74 gen_set_fpr_hs(ctx, a->rd, dest);
79 static bool trans_fmsub_s(DisasContext *ctx, arg_fmsub_s *a)
82 REQUIRE_ZFINX_OR_F(ctx);
84 TCGv_i64 dest = dest_fpr(ctx, a->rd);
85 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
86 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
87 TCGv_i64 src3 = get_fpr_hs(ctx, a->rs3);
89 gen_set_rm(ctx, a->rm);
90 gen_helper_fmsub_s(dest, cpu_env, src1, src2, src3);
91 gen_set_fpr_hs(ctx, a->rd, dest);
96 static bool trans_fnmsub_s(DisasContext *ctx, arg_fnmsub_s *a)
99 REQUIRE_ZFINX_OR_F(ctx);
101 TCGv_i64 dest = dest_fpr(ctx, a->rd);
102 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
103 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
104 TCGv_i64 src3 = get_fpr_hs(ctx, a->rs3);
106 gen_set_rm(ctx, a->rm);
107 gen_helper_fnmsub_s(dest, cpu_env, src1, src2, src3);
108 gen_set_fpr_hs(ctx, a->rd, dest);
113 static bool trans_fnmadd_s(DisasContext *ctx, arg_fnmadd_s *a)
116 REQUIRE_ZFINX_OR_F(ctx);
118 TCGv_i64 dest = dest_fpr(ctx, a->rd);
119 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
120 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
121 TCGv_i64 src3 = get_fpr_hs(ctx, a->rs3);
123 gen_set_rm(ctx, a->rm);
124 gen_helper_fnmadd_s(dest, cpu_env, src1, src2, src3);
125 gen_set_fpr_hs(ctx, a->rd, dest);
130 static bool trans_fadd_s(DisasContext *ctx, arg_fadd_s *a)
133 REQUIRE_ZFINX_OR_F(ctx);
135 TCGv_i64 dest = dest_fpr(ctx, a->rd);
136 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
137 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
139 gen_set_rm(ctx, a->rm);
140 gen_helper_fadd_s(dest, cpu_env, src1, src2);
141 gen_set_fpr_hs(ctx, a->rd, dest);
146 static bool trans_fsub_s(DisasContext *ctx, arg_fsub_s *a)
149 REQUIRE_ZFINX_OR_F(ctx);
151 TCGv_i64 dest = dest_fpr(ctx, a->rd);
152 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
153 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
155 gen_set_rm(ctx, a->rm);
156 gen_helper_fsub_s(dest, cpu_env, src1, src2);
157 gen_set_fpr_hs(ctx, a->rd, dest);
162 static bool trans_fmul_s(DisasContext *ctx, arg_fmul_s *a)
165 REQUIRE_ZFINX_OR_F(ctx);
167 TCGv_i64 dest = dest_fpr(ctx, a->rd);
168 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
169 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
171 gen_set_rm(ctx, a->rm);
172 gen_helper_fmul_s(dest, cpu_env, src1, src2);
173 gen_set_fpr_hs(ctx, a->rd, dest);
178 static bool trans_fdiv_s(DisasContext *ctx, arg_fdiv_s *a)
181 REQUIRE_ZFINX_OR_F(ctx);
183 TCGv_i64 dest = dest_fpr(ctx, a->rd);
184 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
185 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
187 gen_set_rm(ctx, a->rm);
188 gen_helper_fdiv_s(dest, cpu_env, src1, src2);
189 gen_set_fpr_hs(ctx, a->rd, dest);
194 static bool trans_fsqrt_s(DisasContext *ctx, arg_fsqrt_s *a)
197 REQUIRE_ZFINX_OR_F(ctx);
199 TCGv_i64 dest = dest_fpr(ctx, a->rd);
200 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
202 gen_set_rm(ctx, a->rm);
203 gen_helper_fsqrt_s(dest, cpu_env, src1);
204 gen_set_fpr_hs(ctx, a->rd, dest);
209 static bool trans_fsgnj_s(DisasContext *ctx, arg_fsgnj_s *a)
212 REQUIRE_ZFINX_OR_F(ctx);
214 TCGv_i64 dest = dest_fpr(ctx, a->rd);
215 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
217 if (a->rs1 == a->rs2) { /* FMOV */
218 if (!ctx->cfg_ptr->ext_zfinx) {
219 gen_check_nanbox_s(dest, src1);
221 tcg_gen_ext32s_i64(dest, src1);
224 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
226 if (!ctx->cfg_ptr->ext_zfinx) {
227 TCGv_i64 rs1 = tcg_temp_new_i64();
228 TCGv_i64 rs2 = tcg_temp_new_i64();
229 gen_check_nanbox_s(rs1, src1);
230 gen_check_nanbox_s(rs2, src2);
232 /* This formulation retains the nanboxing of rs2 in normal 'F'. */
233 tcg_gen_deposit_i64(dest, rs2, rs1, 0, 31);
235 tcg_temp_free_i64(rs1);
236 tcg_temp_free_i64(rs2);
238 tcg_gen_deposit_i64(dest, src2, src1, 0, 31);
239 tcg_gen_ext32s_i64(dest, dest);
242 gen_set_fpr_hs(ctx, a->rd, dest);
247 static bool trans_fsgnjn_s(DisasContext *ctx, arg_fsgnjn_s *a)
249 TCGv_i64 rs1, rs2, mask;
252 REQUIRE_ZFINX_OR_F(ctx);
254 TCGv_i64 dest = dest_fpr(ctx, a->rd);
255 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
257 rs1 = tcg_temp_new_i64();
258 if (!ctx->cfg_ptr->ext_zfinx) {
259 gen_check_nanbox_s(rs1, src1);
261 tcg_gen_mov_i64(rs1, src1);
263 if (a->rs1 == a->rs2) { /* FNEG */
264 tcg_gen_xori_i64(dest, rs1, MAKE_64BIT_MASK(31, 1));
266 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
267 rs2 = tcg_temp_new_i64();
268 if (!ctx->cfg_ptr->ext_zfinx) {
269 gen_check_nanbox_s(rs2, src2);
271 tcg_gen_mov_i64(rs2, src2);
275 * Replace bit 31 in rs1 with inverse in rs2.
276 * This formulation retains the nanboxing of rs1.
278 mask = tcg_constant_i64(~MAKE_64BIT_MASK(31, 1));
279 tcg_gen_nor_i64(rs2, rs2, mask);
280 tcg_gen_and_i64(dest, mask, rs1);
281 tcg_gen_or_i64(dest, dest, rs2);
283 tcg_temp_free_i64(rs2);
285 /* signed-extended intead of nanboxing for result if enable zfinx */
286 if (ctx->cfg_ptr->ext_zfinx) {
287 tcg_gen_ext32s_i64(dest, dest);
289 gen_set_fpr_hs(ctx, a->rd, dest);
290 tcg_temp_free_i64(rs1);
295 static bool trans_fsgnjx_s(DisasContext *ctx, arg_fsgnjx_s *a)
300 REQUIRE_ZFINX_OR_F(ctx);
302 TCGv_i64 dest = dest_fpr(ctx, a->rd);
303 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
304 rs1 = tcg_temp_new_i64();
306 if (!ctx->cfg_ptr->ext_zfinx) {
307 gen_check_nanbox_s(rs1, src1);
309 tcg_gen_mov_i64(rs1, src1);
312 if (a->rs1 == a->rs2) { /* FABS */
313 tcg_gen_andi_i64(dest, rs1, ~MAKE_64BIT_MASK(31, 1));
315 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
316 rs2 = tcg_temp_new_i64();
318 if (!ctx->cfg_ptr->ext_zfinx) {
319 gen_check_nanbox_s(rs2, src2);
321 tcg_gen_mov_i64(rs2, src2);
325 * Xor bit 31 in rs1 with that in rs2.
326 * This formulation retains the nanboxing of rs1.
328 tcg_gen_andi_i64(dest, rs2, MAKE_64BIT_MASK(31, 1));
329 tcg_gen_xor_i64(dest, rs1, dest);
331 tcg_temp_free_i64(rs2);
333 /* signed-extended intead of nanboxing for result if enable zfinx */
334 if (ctx->cfg_ptr->ext_zfinx) {
335 tcg_gen_ext32s_i64(dest, dest);
337 tcg_temp_free_i64(rs1);
338 gen_set_fpr_hs(ctx, a->rd, dest);
343 static bool trans_fmin_s(DisasContext *ctx, arg_fmin_s *a)
346 REQUIRE_ZFINX_OR_F(ctx);
348 TCGv_i64 dest = dest_fpr(ctx, a->rd);
349 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
350 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
352 gen_helper_fmin_s(dest, cpu_env, src1, src2);
353 gen_set_fpr_hs(ctx, a->rd, dest);
358 static bool trans_fmax_s(DisasContext *ctx, arg_fmax_s *a)
361 REQUIRE_ZFINX_OR_F(ctx);
363 TCGv_i64 dest = dest_fpr(ctx, a->rd);
364 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
365 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
367 gen_helper_fmax_s(dest, cpu_env, src1, src2);
368 gen_set_fpr_hs(ctx, a->rd, dest);
373 static bool trans_fcvt_w_s(DisasContext *ctx, arg_fcvt_w_s *a)
376 REQUIRE_ZFINX_OR_F(ctx);
378 TCGv dest = dest_gpr(ctx, a->rd);
379 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
381 gen_set_rm(ctx, a->rm);
382 gen_helper_fcvt_w_s(dest, cpu_env, src1);
383 gen_set_gpr(ctx, a->rd, dest);
387 static bool trans_fcvt_wu_s(DisasContext *ctx, arg_fcvt_wu_s *a)
390 REQUIRE_ZFINX_OR_F(ctx);
392 TCGv dest = dest_gpr(ctx, a->rd);
393 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
395 gen_set_rm(ctx, a->rm);
396 gen_helper_fcvt_wu_s(dest, cpu_env, src1);
397 gen_set_gpr(ctx, a->rd, dest);
401 static bool trans_fmv_x_w(DisasContext *ctx, arg_fmv_x_w *a)
403 /* NOTE: This was FMV.X.S in an earlier version of the ISA spec! */
405 REQUIRE_ZFINX_OR_F(ctx);
407 TCGv dest = dest_gpr(ctx, a->rd);
408 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
409 #if defined(TARGET_RISCV64)
410 tcg_gen_ext32s_tl(dest, src1);
412 tcg_gen_extrl_i64_i32(dest, src1);
415 gen_set_gpr(ctx, a->rd, dest);
419 static bool trans_feq_s(DisasContext *ctx, arg_feq_s *a)
422 REQUIRE_ZFINX_OR_F(ctx);
424 TCGv dest = dest_gpr(ctx, a->rd);
425 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
426 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
428 gen_helper_feq_s(dest, cpu_env, src1, src2);
429 gen_set_gpr(ctx, a->rd, dest);
433 static bool trans_flt_s(DisasContext *ctx, arg_flt_s *a)
436 REQUIRE_ZFINX_OR_F(ctx);
438 TCGv dest = dest_gpr(ctx, a->rd);
439 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
440 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
442 gen_helper_flt_s(dest, cpu_env, src1, src2);
443 gen_set_gpr(ctx, a->rd, dest);
447 static bool trans_fle_s(DisasContext *ctx, arg_fle_s *a)
450 REQUIRE_ZFINX_OR_F(ctx);
452 TCGv dest = dest_gpr(ctx, a->rd);
453 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
454 TCGv_i64 src2 = get_fpr_hs(ctx, a->rs2);
456 gen_helper_fle_s(dest, cpu_env, src1, src2);
457 gen_set_gpr(ctx, a->rd, dest);
461 static bool trans_fclass_s(DisasContext *ctx, arg_fclass_s *a)
464 REQUIRE_ZFINX_OR_F(ctx);
466 TCGv dest = dest_gpr(ctx, a->rd);
467 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
469 gen_helper_fclass_s(dest, cpu_env, src1);
470 gen_set_gpr(ctx, a->rd, dest);
474 static bool trans_fcvt_s_w(DisasContext *ctx, arg_fcvt_s_w *a)
477 REQUIRE_ZFINX_OR_F(ctx);
479 TCGv_i64 dest = dest_fpr(ctx, a->rd);
480 TCGv src = get_gpr(ctx, a->rs1, EXT_SIGN);
482 gen_set_rm(ctx, a->rm);
483 gen_helper_fcvt_s_w(dest, cpu_env, src);
484 gen_set_fpr_hs(ctx, a->rd, dest);
489 static bool trans_fcvt_s_wu(DisasContext *ctx, arg_fcvt_s_wu *a)
492 REQUIRE_ZFINX_OR_F(ctx);
494 TCGv_i64 dest = dest_fpr(ctx, a->rd);
495 TCGv src = get_gpr(ctx, a->rs1, EXT_ZERO);
497 gen_set_rm(ctx, a->rm);
498 gen_helper_fcvt_s_wu(dest, cpu_env, src);
499 gen_set_fpr_hs(ctx, a->rd, dest);
504 static bool trans_fmv_w_x(DisasContext *ctx, arg_fmv_w_x *a)
506 /* NOTE: This was FMV.S.X in an earlier version of the ISA spec! */
508 REQUIRE_ZFINX_OR_F(ctx);
510 TCGv_i64 dest = dest_fpr(ctx, a->rd);
511 TCGv src = get_gpr(ctx, a->rs1, EXT_ZERO);
513 tcg_gen_extu_tl_i64(dest, src);
514 gen_nanbox_s(dest, dest);
515 gen_set_fpr_hs(ctx, a->rd, dest);
520 static bool trans_fcvt_l_s(DisasContext *ctx, arg_fcvt_l_s *a)
524 REQUIRE_ZFINX_OR_F(ctx);
526 TCGv dest = dest_gpr(ctx, a->rd);
527 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
529 gen_set_rm(ctx, a->rm);
530 gen_helper_fcvt_l_s(dest, cpu_env, src1);
531 gen_set_gpr(ctx, a->rd, dest);
535 static bool trans_fcvt_lu_s(DisasContext *ctx, arg_fcvt_lu_s *a)
539 REQUIRE_ZFINX_OR_F(ctx);
541 TCGv dest = dest_gpr(ctx, a->rd);
542 TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1);
544 gen_set_rm(ctx, a->rm);
545 gen_helper_fcvt_lu_s(dest, cpu_env, src1);
546 gen_set_gpr(ctx, a->rd, dest);
550 static bool trans_fcvt_s_l(DisasContext *ctx, arg_fcvt_s_l *a)
554 REQUIRE_ZFINX_OR_F(ctx);
556 TCGv_i64 dest = dest_fpr(ctx, a->rd);
557 TCGv src = get_gpr(ctx, a->rs1, EXT_SIGN);
559 gen_set_rm(ctx, a->rm);
560 gen_helper_fcvt_s_l(dest, cpu_env, src);
561 gen_set_fpr_hs(ctx, a->rd, dest);
566 static bool trans_fcvt_s_lu(DisasContext *ctx, arg_fcvt_s_lu *a)
570 REQUIRE_ZFINX_OR_F(ctx);
572 TCGv_i64 dest = dest_fpr(ctx, a->rd);
573 TCGv src = get_gpr(ctx, a->rs1, EXT_ZERO);
575 gen_set_rm(ctx, a->rm);
576 gen_helper_fcvt_s_lu(dest, cpu_env, src);
577 gen_set_fpr_hs(ctx, a->rd, dest);