2 * RISC-V emulation for qemu: main translation routines.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2 or later, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
19 #include "qemu/osdep.h"
22 #include "tcg/tcg-op.h"
23 #include "disas/disas.h"
24 #include "exec/cpu_ldst.h"
25 #include "exec/exec-all.h"
26 #include "exec/helper-proto.h"
27 #include "exec/helper-gen.h"
29 #include "exec/translator.h"
33 #include "internals.h"
35 /* global register indices */
36 static TCGv cpu_gpr[32], cpu_gprh[32], cpu_pc, cpu_vl, cpu_vstart;
37 static TCGv_i64 cpu_fpr[32]; /* assume F and D extensions */
40 /* globals for PM CSRs */
44 #include "exec/gen-icount.h"
47 * If an operation is being performed on less than TARGET_LONG_BITS,
48 * it may require the inputs to be sign- or zero-extended; which will
49 * depend on the exact operation being performed.
57 typedef struct DisasContext {
58 DisasContextBase base;
59 /* pc_succ_insn points to the instruction following base.pc_next */
60 target_ulong pc_succ_insn;
61 target_ulong priv_ver;
62 RISCVMXL misa_mxl_max;
68 uint32_t mstatus_hs_fs;
69 uint32_t mstatus_hs_vs;
71 /* Remember the rounding mode encoded in the previous fp instruction,
72 which we have already installed into env->fp_status. Or -1 for
73 no previous fp instruction. Note that we exit the TB when writing
74 to any system register, which includes CSR_FRM, so we do not have
75 to reset this known value. */
79 const RISCVCPUConfig *cfg_ptr;
81 /* vector extension */
84 * Encode LMUL to lmul as follows:
102 /* Space for 3 operands plus 1 extra for address computation. */
104 /* Space for 4 operands(1 dest and <=3 src) for float point computation */
107 /* PointerMasking extension */
108 bool pm_mask_enabled;
109 bool pm_base_enabled;
112 static inline bool has_ext(DisasContext *ctx, uint32_t ext)
114 return ctx->misa_ext & ext;
117 static bool always_true_p(DisasContext *ctx __attribute__((__unused__)))
122 #define MATERIALISE_EXT_PREDICATE(ext) \
123 static bool has_ ## ext ## _p(DisasContext *ctx) \
125 return ctx->cfg_ptr->ext_ ## ext ; \
128 MATERIALISE_EXT_PREDICATE(XVentanaCondOps);
130 #ifdef TARGET_RISCV32
131 #define get_xl(ctx) MXL_RV32
132 #elif defined(CONFIG_USER_ONLY)
133 #define get_xl(ctx) MXL_RV64
135 #define get_xl(ctx) ((ctx)->xl)
138 /* The word size for this machine mode. */
139 static inline int __attribute__((unused)) get_xlen(DisasContext *ctx)
141 return 16 << get_xl(ctx);
144 /* The operation length, as opposed to the xlen. */
145 #ifdef TARGET_RISCV32
146 #define get_ol(ctx) MXL_RV32
148 #define get_ol(ctx) ((ctx)->ol)
151 static inline int get_olen(DisasContext *ctx)
153 return 16 << get_ol(ctx);
156 /* The maximum register length */
157 #ifdef TARGET_RISCV32
158 #define get_xl_max(ctx) MXL_RV32
160 #define get_xl_max(ctx) ((ctx)->misa_mxl_max)
164 * RISC-V requires NaN-boxing of narrower width floating point values.
165 * This applies when a 32-bit value is assigned to a 64-bit FP register.
166 * For consistency and simplicity, we nanbox results even when the RVD
167 * extension is not present.
169 static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in)
171 tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(32, 32));
174 static void gen_nanbox_h(TCGv_i64 out, TCGv_i64 in)
176 tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(16, 48));
180 * A narrow n-bit operation, where n < FLEN, checks that input operands
181 * are correctly Nan-boxed, i.e., all upper FLEN - n bits are 1.
182 * If so, the least-significant bits of the input are used, otherwise the
183 * input value is treated as an n-bit canonical NaN (v2.2 section 9.2).
185 * Here, the result is always nan-boxed, even the canonical nan.
187 static void gen_check_nanbox_h(TCGv_i64 out, TCGv_i64 in)
189 TCGv_i64 t_max = tcg_const_i64(0xffffffffffff0000ull);
190 TCGv_i64 t_nan = tcg_const_i64(0xffffffffffff7e00ull);
192 tcg_gen_movcond_i64(TCG_COND_GEU, out, in, t_max, in, t_nan);
193 tcg_temp_free_i64(t_max);
194 tcg_temp_free_i64(t_nan);
197 static void gen_check_nanbox_s(TCGv_i64 out, TCGv_i64 in)
199 TCGv_i64 t_max = tcg_constant_i64(0xffffffff00000000ull);
200 TCGv_i64 t_nan = tcg_constant_i64(0xffffffff7fc00000ull);
202 tcg_gen_movcond_i64(TCG_COND_GEU, out, in, t_max, in, t_nan);
205 static void gen_set_pc_imm(DisasContext *ctx, target_ulong dest)
207 if (get_xl(ctx) == MXL_RV32) {
208 dest = (int32_t)dest;
210 tcg_gen_movi_tl(cpu_pc, dest);
213 static void gen_set_pc(DisasContext *ctx, TCGv dest)
215 if (get_xl(ctx) == MXL_RV32) {
216 tcg_gen_ext32s_tl(cpu_pc, dest);
218 tcg_gen_mov_tl(cpu_pc, dest);
222 static void generate_exception(DisasContext *ctx, int excp)
224 gen_set_pc_imm(ctx, ctx->base.pc_next);
225 gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp));
226 ctx->base.is_jmp = DISAS_NORETURN;
229 static void generate_exception_mtval(DisasContext *ctx, int excp)
231 gen_set_pc_imm(ctx, ctx->base.pc_next);
232 tcg_gen_st_tl(cpu_pc, cpu_env, offsetof(CPURISCVState, badaddr));
233 gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp));
234 ctx->base.is_jmp = DISAS_NORETURN;
237 static void gen_exception_illegal(DisasContext *ctx)
239 tcg_gen_st_i32(tcg_constant_i32(ctx->opcode), cpu_env,
240 offsetof(CPURISCVState, bins));
242 generate_exception(ctx, RISCV_EXCP_ILLEGAL_INST);
245 static void gen_exception_inst_addr_mis(DisasContext *ctx)
247 generate_exception_mtval(ctx, RISCV_EXCP_INST_ADDR_MIS);
250 static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
252 if (translator_use_goto_tb(&ctx->base, dest)) {
254 gen_set_pc_imm(ctx, dest);
255 tcg_gen_exit_tb(ctx->base.tb, n);
257 gen_set_pc_imm(ctx, dest);
258 tcg_gen_lookup_and_goto_ptr();
263 * Wrappers for getting reg values.
265 * The $zero register does not have cpu_gpr[0] allocated -- we supply the
266 * constant zero as a source, and an uninitialized sink as destination.
268 * Further, we may provide an extension for word operations.
270 static TCGv temp_new(DisasContext *ctx)
272 assert(ctx->ntemp < ARRAY_SIZE(ctx->temp));
273 return ctx->temp[ctx->ntemp++] = tcg_temp_new();
276 static TCGv get_gpr(DisasContext *ctx, int reg_num, DisasExtend ext)
284 switch (get_ol(ctx)) {
291 tcg_gen_ext32s_tl(t, cpu_gpr[reg_num]);
295 tcg_gen_ext32u_tl(t, cpu_gpr[reg_num]);
298 g_assert_not_reached();
305 g_assert_not_reached();
307 return cpu_gpr[reg_num];
310 static TCGv get_gprh(DisasContext *ctx, int reg_num)
312 assert(get_xl(ctx) == MXL_RV128);
316 return cpu_gprh[reg_num];
319 static TCGv dest_gpr(DisasContext *ctx, int reg_num)
321 if (reg_num == 0 || get_olen(ctx) < TARGET_LONG_BITS) {
322 return temp_new(ctx);
324 return cpu_gpr[reg_num];
327 static TCGv dest_gprh(DisasContext *ctx, int reg_num)
330 return temp_new(ctx);
332 return cpu_gprh[reg_num];
335 static void gen_set_gpr(DisasContext *ctx, int reg_num, TCGv t)
338 switch (get_ol(ctx)) {
340 tcg_gen_ext32s_tl(cpu_gpr[reg_num], t);
344 tcg_gen_mov_tl(cpu_gpr[reg_num], t);
347 g_assert_not_reached();
350 if (get_xl_max(ctx) == MXL_RV128) {
351 tcg_gen_sari_tl(cpu_gprh[reg_num], cpu_gpr[reg_num], 63);
356 static void gen_set_gpri(DisasContext *ctx, int reg_num, target_long imm)
359 switch (get_ol(ctx)) {
361 tcg_gen_movi_tl(cpu_gpr[reg_num], (int32_t)imm);
365 tcg_gen_movi_tl(cpu_gpr[reg_num], imm);
368 g_assert_not_reached();
371 if (get_xl_max(ctx) == MXL_RV128) {
372 tcg_gen_movi_tl(cpu_gprh[reg_num], -(imm < 0));
377 static void gen_set_gpr128(DisasContext *ctx, int reg_num, TCGv rl, TCGv rh)
379 assert(get_ol(ctx) == MXL_RV128);
381 tcg_gen_mov_tl(cpu_gpr[reg_num], rl);
382 tcg_gen_mov_tl(cpu_gprh[reg_num], rh);
386 static TCGv_i64 ftemp_new(DisasContext *ctx)
388 assert(ctx->nftemp < ARRAY_SIZE(ctx->ftemp));
389 return ctx->ftemp[ctx->nftemp++] = tcg_temp_new_i64();
392 static TCGv_i64 get_fpr_hs(DisasContext *ctx, int reg_num)
394 if (!ctx->cfg_ptr->ext_zfinx) {
395 return cpu_fpr[reg_num];
399 return tcg_constant_i64(0);
401 switch (get_xl(ctx)) {
403 #ifdef TARGET_RISCV32
405 TCGv_i64 t = ftemp_new(ctx);
406 tcg_gen_ext_i32_i64(t, cpu_gpr[reg_num]);
412 return cpu_gpr[reg_num];
415 g_assert_not_reached();
419 static TCGv_i64 get_fpr_d(DisasContext *ctx, int reg_num)
421 if (!ctx->cfg_ptr->ext_zfinx) {
422 return cpu_fpr[reg_num];
426 return tcg_constant_i64(0);
428 switch (get_xl(ctx)) {
431 TCGv_i64 t = ftemp_new(ctx);
432 tcg_gen_concat_tl_i64(t, cpu_gpr[reg_num], cpu_gpr[reg_num + 1]);
435 #ifdef TARGET_RISCV64
437 return cpu_gpr[reg_num];
440 g_assert_not_reached();
444 static TCGv_i64 dest_fpr(DisasContext *ctx, int reg_num)
446 if (!ctx->cfg_ptr->ext_zfinx) {
447 return cpu_fpr[reg_num];
451 return ftemp_new(ctx);
454 switch (get_xl(ctx)) {
456 return ftemp_new(ctx);
457 #ifdef TARGET_RISCV64
459 return cpu_gpr[reg_num];
462 g_assert_not_reached();
466 /* assume t is nanboxing (for normal) or sign-extended (for zfinx) */
467 static void gen_set_fpr_hs(DisasContext *ctx, int reg_num, TCGv_i64 t)
469 if (!ctx->cfg_ptr->ext_zfinx) {
470 tcg_gen_mov_i64(cpu_fpr[reg_num], t);
474 switch (get_xl(ctx)) {
476 #ifdef TARGET_RISCV32
477 tcg_gen_extrl_i64_i32(cpu_gpr[reg_num], t);
482 tcg_gen_mov_i64(cpu_gpr[reg_num], t);
486 g_assert_not_reached();
491 static void gen_set_fpr_d(DisasContext *ctx, int reg_num, TCGv_i64 t)
493 if (!ctx->cfg_ptr->ext_zfinx) {
494 tcg_gen_mov_i64(cpu_fpr[reg_num], t);
499 switch (get_xl(ctx)) {
501 #ifdef TARGET_RISCV32
502 tcg_gen_extr_i64_i32(cpu_gpr[reg_num], cpu_gpr[reg_num + 1], t);
505 tcg_gen_ext32s_i64(cpu_gpr[reg_num], t);
506 tcg_gen_sari_i64(cpu_gpr[reg_num + 1], t, 32);
509 tcg_gen_mov_i64(cpu_gpr[reg_num], t);
513 g_assert_not_reached();
518 static void gen_jal(DisasContext *ctx, int rd, target_ulong imm)
520 target_ulong next_pc;
522 /* check misaligned: */
523 next_pc = ctx->base.pc_next + imm;
524 if (!has_ext(ctx, RVC)) {
525 if ((next_pc & 0x3) != 0) {
526 gen_exception_inst_addr_mis(ctx);
531 gen_set_gpri(ctx, rd, ctx->pc_succ_insn);
532 gen_goto_tb(ctx, 0, ctx->base.pc_next + imm); /* must use this for safety */
533 ctx->base.is_jmp = DISAS_NORETURN;
536 /* Compute a canonical address from a register plus offset. */
537 static TCGv get_address(DisasContext *ctx, int rs1, int imm)
539 TCGv addr = temp_new(ctx);
540 TCGv src1 = get_gpr(ctx, rs1, EXT_NONE);
542 tcg_gen_addi_tl(addr, src1, imm);
543 if (ctx->pm_mask_enabled) {
544 tcg_gen_and_tl(addr, addr, pm_mask);
545 } else if (get_xl(ctx) == MXL_RV32) {
546 tcg_gen_ext32u_tl(addr, addr);
548 if (ctx->pm_base_enabled) {
549 tcg_gen_or_tl(addr, addr, pm_base);
554 #ifndef CONFIG_USER_ONLY
555 /* The states of mstatus_fs are:
556 * 0 = disabled, 1 = initial, 2 = clean, 3 = dirty
557 * We will have already diagnosed disabled state,
558 * and need to turn initial/clean into dirty.
560 static void mark_fs_dirty(DisasContext *ctx)
564 if (!has_ext(ctx, RVF)) {
568 if (ctx->mstatus_fs != MSTATUS_FS) {
569 /* Remember the state change for the rest of the TB. */
570 ctx->mstatus_fs = MSTATUS_FS;
572 tmp = tcg_temp_new();
573 tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus));
574 tcg_gen_ori_tl(tmp, tmp, MSTATUS_FS);
575 tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus));
579 if (ctx->virt_enabled && ctx->mstatus_hs_fs != MSTATUS_FS) {
580 /* Remember the stage change for the rest of the TB. */
581 ctx->mstatus_hs_fs = MSTATUS_FS;
583 tmp = tcg_temp_new();
584 tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus_hs));
585 tcg_gen_ori_tl(tmp, tmp, MSTATUS_FS);
586 tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus_hs));
591 static inline void mark_fs_dirty(DisasContext *ctx) { }
594 #ifndef CONFIG_USER_ONLY
595 /* The states of mstatus_vs are:
596 * 0 = disabled, 1 = initial, 2 = clean, 3 = dirty
597 * We will have already diagnosed disabled state,
598 * and need to turn initial/clean into dirty.
600 static void mark_vs_dirty(DisasContext *ctx)
604 if (ctx->mstatus_vs != MSTATUS_VS) {
605 /* Remember the state change for the rest of the TB. */
606 ctx->mstatus_vs = MSTATUS_VS;
608 tmp = tcg_temp_new();
609 tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus));
610 tcg_gen_ori_tl(tmp, tmp, MSTATUS_VS);
611 tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus));
615 if (ctx->virt_enabled && ctx->mstatus_hs_vs != MSTATUS_VS) {
616 /* Remember the stage change for the rest of the TB. */
617 ctx->mstatus_hs_vs = MSTATUS_VS;
619 tmp = tcg_temp_new();
620 tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus_hs));
621 tcg_gen_ori_tl(tmp, tmp, MSTATUS_VS);
622 tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus_hs));
627 static inline void mark_vs_dirty(DisasContext *ctx) { }
630 static void gen_set_rm(DisasContext *ctx, int rm)
632 if (ctx->frm == rm) {
637 if (rm == RISCV_FRM_ROD) {
638 gen_helper_set_rod_rounding_mode(cpu_env);
642 gen_helper_set_rounding_mode(cpu_env, tcg_constant_i32(rm));
645 static int ex_plus_1(DisasContext *ctx, int nf)
650 #define EX_SH(amount) \
651 static int ex_shift_##amount(DisasContext *ctx, int imm) \
653 return imm << amount; \
661 #define REQUIRE_EXT(ctx, ext) do { \
662 if (!has_ext(ctx, ext)) { \
667 #define REQUIRE_32BIT(ctx) do { \
668 if (get_xl(ctx) != MXL_RV32) { \
673 #define REQUIRE_64BIT(ctx) do { \
674 if (get_xl(ctx) != MXL_RV64) { \
679 #define REQUIRE_128BIT(ctx) do { \
680 if (get_xl(ctx) != MXL_RV128) { \
685 #define REQUIRE_64_OR_128BIT(ctx) do { \
686 if (get_xl(ctx) == MXL_RV32) { \
691 static int ex_rvc_register(DisasContext *ctx, int reg)
696 static int ex_rvc_shifti(DisasContext *ctx, int imm)
698 /* For RV128 a shamt of 0 means a shift by 64. */
699 return imm ? imm : 64;
702 /* Include the auto-generated decoder for 32 bit insn */
703 #include "decode-insn32.c.inc"
705 static bool gen_logic_imm_fn(DisasContext *ctx, arg_i *a,
706 void (*func)(TCGv, TCGv, target_long))
708 TCGv dest = dest_gpr(ctx, a->rd);
709 TCGv src1 = get_gpr(ctx, a->rs1, EXT_NONE);
711 func(dest, src1, a->imm);
713 if (get_xl(ctx) == MXL_RV128) {
714 TCGv src1h = get_gprh(ctx, a->rs1);
715 TCGv desth = dest_gprh(ctx, a->rd);
717 func(desth, src1h, -(a->imm < 0));
718 gen_set_gpr128(ctx, a->rd, dest, desth);
720 gen_set_gpr(ctx, a->rd, dest);
726 static bool gen_logic(DisasContext *ctx, arg_r *a,
727 void (*func)(TCGv, TCGv, TCGv))
729 TCGv dest = dest_gpr(ctx, a->rd);
730 TCGv src1 = get_gpr(ctx, a->rs1, EXT_NONE);
731 TCGv src2 = get_gpr(ctx, a->rs2, EXT_NONE);
733 func(dest, src1, src2);
735 if (get_xl(ctx) == MXL_RV128) {
736 TCGv src1h = get_gprh(ctx, a->rs1);
737 TCGv src2h = get_gprh(ctx, a->rs2);
738 TCGv desth = dest_gprh(ctx, a->rd);
740 func(desth, src1h, src2h);
741 gen_set_gpr128(ctx, a->rd, dest, desth);
743 gen_set_gpr(ctx, a->rd, dest);
749 static bool gen_arith_imm_fn(DisasContext *ctx, arg_i *a, DisasExtend ext,
750 void (*func)(TCGv, TCGv, target_long),
751 void (*f128)(TCGv, TCGv, TCGv, TCGv, target_long))
753 TCGv dest = dest_gpr(ctx, a->rd);
754 TCGv src1 = get_gpr(ctx, a->rs1, ext);
756 if (get_ol(ctx) < MXL_RV128) {
757 func(dest, src1, a->imm);
758 gen_set_gpr(ctx, a->rd, dest);
764 TCGv src1h = get_gprh(ctx, a->rs1);
765 TCGv desth = dest_gprh(ctx, a->rd);
767 f128(dest, desth, src1, src1h, a->imm);
768 gen_set_gpr128(ctx, a->rd, dest, desth);
773 static bool gen_arith_imm_tl(DisasContext *ctx, arg_i *a, DisasExtend ext,
774 void (*func)(TCGv, TCGv, TCGv),
775 void (*f128)(TCGv, TCGv, TCGv, TCGv, TCGv, TCGv))
777 TCGv dest = dest_gpr(ctx, a->rd);
778 TCGv src1 = get_gpr(ctx, a->rs1, ext);
779 TCGv src2 = tcg_constant_tl(a->imm);
781 if (get_ol(ctx) < MXL_RV128) {
782 func(dest, src1, src2);
783 gen_set_gpr(ctx, a->rd, dest);
789 TCGv src1h = get_gprh(ctx, a->rs1);
790 TCGv src2h = tcg_constant_tl(-(a->imm < 0));
791 TCGv desth = dest_gprh(ctx, a->rd);
793 f128(dest, desth, src1, src1h, src2, src2h);
794 gen_set_gpr128(ctx, a->rd, dest, desth);
799 static bool gen_arith(DisasContext *ctx, arg_r *a, DisasExtend ext,
800 void (*func)(TCGv, TCGv, TCGv),
801 void (*f128)(TCGv, TCGv, TCGv, TCGv, TCGv, TCGv))
803 TCGv dest = dest_gpr(ctx, a->rd);
804 TCGv src1 = get_gpr(ctx, a->rs1, ext);
805 TCGv src2 = get_gpr(ctx, a->rs2, ext);
807 if (get_ol(ctx) < MXL_RV128) {
808 func(dest, src1, src2);
809 gen_set_gpr(ctx, a->rd, dest);
815 TCGv src1h = get_gprh(ctx, a->rs1);
816 TCGv src2h = get_gprh(ctx, a->rs2);
817 TCGv desth = dest_gprh(ctx, a->rd);
819 f128(dest, desth, src1, src1h, src2, src2h);
820 gen_set_gpr128(ctx, a->rd, dest, desth);
825 static bool gen_arith_per_ol(DisasContext *ctx, arg_r *a, DisasExtend ext,
826 void (*f_tl)(TCGv, TCGv, TCGv),
827 void (*f_32)(TCGv, TCGv, TCGv),
828 void (*f_128)(TCGv, TCGv, TCGv, TCGv, TCGv, TCGv))
830 int olen = get_olen(ctx);
832 if (olen != TARGET_LONG_BITS) {
835 } else if (olen != 128) {
836 g_assert_not_reached();
839 return gen_arith(ctx, a, ext, f_tl, f_128);
842 static bool gen_shift_imm_fn(DisasContext *ctx, arg_shift *a, DisasExtend ext,
843 void (*func)(TCGv, TCGv, target_long),
844 void (*f128)(TCGv, TCGv, TCGv, TCGv, target_long))
847 int max_len = get_olen(ctx);
849 if (a->shamt >= max_len) {
853 dest = dest_gpr(ctx, a->rd);
854 src1 = get_gpr(ctx, a->rs1, ext);
857 func(dest, src1, a->shamt);
858 gen_set_gpr(ctx, a->rd, dest);
860 TCGv src1h = get_gprh(ctx, a->rs1);
861 TCGv desth = dest_gprh(ctx, a->rd);
866 f128(dest, desth, src1, src1h, a->shamt);
867 gen_set_gpr128(ctx, a->rd, dest, desth);
872 static bool gen_shift_imm_fn_per_ol(DisasContext *ctx, arg_shift *a,
874 void (*f_tl)(TCGv, TCGv, target_long),
875 void (*f_32)(TCGv, TCGv, target_long),
876 void (*f_128)(TCGv, TCGv, TCGv, TCGv,
879 int olen = get_olen(ctx);
880 if (olen != TARGET_LONG_BITS) {
883 } else if (olen != 128) {
884 g_assert_not_reached();
887 return gen_shift_imm_fn(ctx, a, ext, f_tl, f_128);
890 static bool gen_shift_imm_tl(DisasContext *ctx, arg_shift *a, DisasExtend ext,
891 void (*func)(TCGv, TCGv, TCGv))
893 TCGv dest, src1, src2;
894 int max_len = get_olen(ctx);
896 if (a->shamt >= max_len) {
900 dest = dest_gpr(ctx, a->rd);
901 src1 = get_gpr(ctx, a->rs1, ext);
902 src2 = tcg_constant_tl(a->shamt);
904 func(dest, src1, src2);
906 gen_set_gpr(ctx, a->rd, dest);
910 static bool gen_shift(DisasContext *ctx, arg_r *a, DisasExtend ext,
911 void (*func)(TCGv, TCGv, TCGv),
912 void (*f128)(TCGv, TCGv, TCGv, TCGv, TCGv))
914 TCGv src2 = get_gpr(ctx, a->rs2, EXT_NONE);
915 TCGv ext2 = tcg_temp_new();
916 int max_len = get_olen(ctx);
918 tcg_gen_andi_tl(ext2, src2, max_len - 1);
920 TCGv dest = dest_gpr(ctx, a->rd);
921 TCGv src1 = get_gpr(ctx, a->rs1, ext);
924 func(dest, src1, ext2);
925 gen_set_gpr(ctx, a->rd, dest);
927 TCGv src1h = get_gprh(ctx, a->rs1);
928 TCGv desth = dest_gprh(ctx, a->rd);
933 f128(dest, desth, src1, src1h, ext2);
934 gen_set_gpr128(ctx, a->rd, dest, desth);
940 static bool gen_shift_per_ol(DisasContext *ctx, arg_r *a, DisasExtend ext,
941 void (*f_tl)(TCGv, TCGv, TCGv),
942 void (*f_32)(TCGv, TCGv, TCGv),
943 void (*f_128)(TCGv, TCGv, TCGv, TCGv, TCGv))
945 int olen = get_olen(ctx);
946 if (olen != TARGET_LONG_BITS) {
949 } else if (olen != 128) {
950 g_assert_not_reached();
953 return gen_shift(ctx, a, ext, f_tl, f_128);
956 static bool gen_unary(DisasContext *ctx, arg_r2 *a, DisasExtend ext,
957 void (*func)(TCGv, TCGv))
959 TCGv dest = dest_gpr(ctx, a->rd);
960 TCGv src1 = get_gpr(ctx, a->rs1, ext);
964 gen_set_gpr(ctx, a->rd, dest);
968 static bool gen_unary_per_ol(DisasContext *ctx, arg_r2 *a, DisasExtend ext,
969 void (*f_tl)(TCGv, TCGv),
970 void (*f_32)(TCGv, TCGv))
972 int olen = get_olen(ctx);
974 if (olen != TARGET_LONG_BITS) {
978 g_assert_not_reached();
981 return gen_unary(ctx, a, ext, f_tl);
984 static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
986 DisasContext *ctx = container_of(dcbase, DisasContext, base);
987 CPUState *cpu = ctx->cs;
988 CPURISCVState *env = cpu->env_ptr;
990 return cpu_ldl_code(env, pc);
993 /* Include insn module translation function */
994 #include "insn_trans/trans_rvi.c.inc"
995 #include "insn_trans/trans_rvm.c.inc"
996 #include "insn_trans/trans_rva.c.inc"
997 #include "insn_trans/trans_rvf.c.inc"
998 #include "insn_trans/trans_rvd.c.inc"
999 #include "insn_trans/trans_rvh.c.inc"
1000 #include "insn_trans/trans_rvv.c.inc"
1001 #include "insn_trans/trans_rvb.c.inc"
1002 #include "insn_trans/trans_rvzfh.c.inc"
1003 #include "insn_trans/trans_privileged.c.inc"
1004 #include "insn_trans/trans_svinval.c.inc"
1005 #include "insn_trans/trans_xventanacondops.c.inc"
1007 /* Include the auto-generated decoder for 16 bit insn */
1008 #include "decode-insn16.c.inc"
1009 /* Include decoders for factored-out extensions */
1010 #include "decode-XVentanaCondOps.c.inc"
1012 static void decode_opc(CPURISCVState *env, DisasContext *ctx, uint16_t opcode)
1015 * A table with predicate (i.e., guard) functions and decoder functions
1016 * that are tested in-order until a decoder matches onto the opcode.
1018 static const struct {
1019 bool (*guard_func)(DisasContext *);
1020 bool (*decode_func)(DisasContext *, uint32_t);
1022 { always_true_p, decode_insn32 },
1023 { has_XVentanaCondOps_p, decode_XVentanaCodeOps },
1026 /* Check for compressed insn */
1027 if (extract16(opcode, 0, 2) != 3) {
1028 if (!has_ext(ctx, RVC)) {
1029 gen_exception_illegal(ctx);
1031 ctx->opcode = opcode;
1032 ctx->pc_succ_insn = ctx->base.pc_next + 2;
1033 if (decode_insn16(ctx, opcode)) {
1038 uint32_t opcode32 = opcode;
1039 opcode32 = deposit32(opcode32, 16, 16,
1040 translator_lduw(env, &ctx->base,
1041 ctx->base.pc_next + 2));
1042 ctx->opcode = opcode32;
1043 ctx->pc_succ_insn = ctx->base.pc_next + 4;
1045 for (size_t i = 0; i < ARRAY_SIZE(decoders); ++i) {
1046 if (decoders[i].guard_func(ctx) &&
1047 decoders[i].decode_func(ctx, opcode32)) {
1053 gen_exception_illegal(ctx);
1056 static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
1058 DisasContext *ctx = container_of(dcbase, DisasContext, base);
1059 CPURISCVState *env = cs->env_ptr;
1060 RISCVCPU *cpu = RISCV_CPU(cs);
1061 uint32_t tb_flags = ctx->base.tb->flags;
1063 ctx->pc_succ_insn = ctx->base.pc_first;
1064 ctx->mem_idx = FIELD_EX32(tb_flags, TB_FLAGS, MEM_IDX);
1065 ctx->mstatus_fs = tb_flags & TB_FLAGS_MSTATUS_FS;
1066 ctx->mstatus_vs = tb_flags & TB_FLAGS_MSTATUS_VS;
1067 ctx->priv_ver = env->priv_ver;
1068 #if !defined(CONFIG_USER_ONLY)
1069 if (riscv_has_ext(env, RVH)) {
1070 ctx->virt_enabled = riscv_cpu_virt_enabled(env);
1072 ctx->virt_enabled = false;
1075 ctx->virt_enabled = false;
1077 ctx->misa_ext = env->misa_ext;
1078 ctx->frm = -1; /* unknown rounding mode */
1079 ctx->cfg_ptr = &(cpu->cfg);
1080 ctx->mstatus_hs_fs = FIELD_EX32(tb_flags, TB_FLAGS, MSTATUS_HS_FS);
1081 ctx->mstatus_hs_vs = FIELD_EX32(tb_flags, TB_FLAGS, MSTATUS_HS_VS);
1082 ctx->hlsx = FIELD_EX32(tb_flags, TB_FLAGS, HLSX);
1083 ctx->vill = FIELD_EX32(tb_flags, TB_FLAGS, VILL);
1084 ctx->sew = FIELD_EX32(tb_flags, TB_FLAGS, SEW);
1085 ctx->lmul = sextract32(FIELD_EX32(tb_flags, TB_FLAGS, LMUL), 0, 3);
1086 ctx->vstart = env->vstart;
1087 ctx->vl_eq_vlmax = FIELD_EX32(tb_flags, TB_FLAGS, VL_EQ_VLMAX);
1088 ctx->misa_mxl_max = env->misa_mxl_max;
1089 ctx->xl = FIELD_EX32(tb_flags, TB_FLAGS, XL);
1092 memset(ctx->temp, 0, sizeof(ctx->temp));
1094 memset(ctx->ftemp, 0, sizeof(ctx->ftemp));
1095 ctx->pm_mask_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_MASK_ENABLED);
1096 ctx->pm_base_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_BASE_ENABLED);
1097 ctx->zero = tcg_constant_tl(0);
1100 static void riscv_tr_tb_start(DisasContextBase *db, CPUState *cpu)
1104 static void riscv_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
1106 DisasContext *ctx = container_of(dcbase, DisasContext, base);
1108 tcg_gen_insn_start(ctx->base.pc_next);
1111 static void riscv_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu)
1113 DisasContext *ctx = container_of(dcbase, DisasContext, base);
1114 CPURISCVState *env = cpu->env_ptr;
1115 uint16_t opcode16 = translator_lduw(env, &ctx->base, ctx->base.pc_next);
1119 decode_opc(env, ctx, opcode16);
1120 ctx->base.pc_next = ctx->pc_succ_insn;
1122 for (i = ctx->ntemp - 1; i >= 0; --i) {
1123 tcg_temp_free(ctx->temp[i]);
1124 ctx->temp[i] = NULL;
1127 for (i = ctx->nftemp - 1; i >= 0; --i) {
1128 tcg_temp_free_i64(ctx->ftemp[i]);
1129 ctx->ftemp[i] = NULL;
1133 if (ctx->base.is_jmp == DISAS_NEXT) {
1134 target_ulong page_start;
1136 page_start = ctx->base.pc_first & TARGET_PAGE_MASK;
1137 if (ctx->base.pc_next - page_start >= TARGET_PAGE_SIZE) {
1138 ctx->base.is_jmp = DISAS_TOO_MANY;
1143 static void riscv_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
1145 DisasContext *ctx = container_of(dcbase, DisasContext, base);
1147 switch (ctx->base.is_jmp) {
1148 case DISAS_TOO_MANY:
1149 gen_goto_tb(ctx, 0, ctx->base.pc_next);
1151 case DISAS_NORETURN:
1154 g_assert_not_reached();
1158 static void riscv_tr_disas_log(const DisasContextBase *dcbase,
1159 CPUState *cpu, FILE *logfile)
1161 #ifndef CONFIG_USER_ONLY
1162 RISCVCPU *rvcpu = RISCV_CPU(cpu);
1163 CPURISCVState *env = &rvcpu->env;
1166 fprintf(logfile, "IN: %s\n", lookup_symbol(dcbase->pc_first));
1167 #ifndef CONFIG_USER_ONLY
1168 fprintf(logfile, "Priv: "TARGET_FMT_ld"; Virt: "TARGET_FMT_ld"\n",
1169 env->priv, env->virt);
1171 target_disas(logfile, cpu, dcbase->pc_first, dcbase->tb->size);
1174 static const TranslatorOps riscv_tr_ops = {
1175 .init_disas_context = riscv_tr_init_disas_context,
1176 .tb_start = riscv_tr_tb_start,
1177 .insn_start = riscv_tr_insn_start,
1178 .translate_insn = riscv_tr_translate_insn,
1179 .tb_stop = riscv_tr_tb_stop,
1180 .disas_log = riscv_tr_disas_log,
1183 void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
1187 translator_loop(&riscv_tr_ops, &ctx.base, cs, tb, max_insns);
1190 void riscv_translate_init(void)
1195 * cpu_gpr[0] is a placeholder for the zero register. Do not use it.
1196 * Use the gen_set_gpr and get_gpr helper functions when accessing regs,
1197 * unless you specifically block reads/writes to reg 0.
1202 for (i = 1; i < 32; i++) {
1203 cpu_gpr[i] = tcg_global_mem_new(cpu_env,
1204 offsetof(CPURISCVState, gpr[i]), riscv_int_regnames[i]);
1205 cpu_gprh[i] = tcg_global_mem_new(cpu_env,
1206 offsetof(CPURISCVState, gprh[i]), riscv_int_regnamesh[i]);
1209 for (i = 0; i < 32; i++) {
1210 cpu_fpr[i] = tcg_global_mem_new_i64(cpu_env,
1211 offsetof(CPURISCVState, fpr[i]), riscv_fpr_regnames[i]);
1214 cpu_pc = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, pc), "pc");
1215 cpu_vl = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, vl), "vl");
1216 cpu_vstart = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, vstart),
1218 load_res = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_res),
1220 load_val = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_val),
1222 /* Assign PM CSRs to tcg globals */
1223 pm_mask = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, cur_pmmask),
1225 pm_base = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, cur_pmbase),