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"
34 /* global register indices */
35 static TCGv cpu_gpr[32], cpu_pc, cpu_vl;
36 static TCGv_i64 cpu_fpr[32]; /* assume F and D extensions */
40 #include "exec/gen-icount.h"
42 typedef struct DisasContext {
43 DisasContextBase base;
44 /* pc_succ_insn points to the instruction following base.pc_next */
45 target_ulong pc_succ_insn;
46 target_ulong priv_ver;
52 /* Remember the rounding mode encoded in the previous fp instruction,
53 which we have already installed into env->fp_status. Or -1 for
54 no previous fp instruction. Note that we exit the TB when writing
55 to any system register, which includes CSR_FRM, so we do not have
56 to reset this known value. */
59 /* vector extension */
69 /* convert riscv funct3 to qemu memop for load/store */
70 static const int tcg_memop_lookup[8] = {
83 #define CASE_OP_32_64(X) case X: case glue(X, W)
85 #define CASE_OP_32_64(X) case X
88 static inline bool has_ext(DisasContext *ctx, uint32_t ext)
90 return ctx->misa & ext;
94 * RISC-V requires NaN-boxing of narrower width floating point values.
95 * This applies when a 32-bit value is assigned to a 64-bit FP register.
96 * For consistency and simplicity, we nanbox results even when the RVD
97 * extension is not present.
99 static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in)
101 tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(32, 32));
104 static void generate_exception(DisasContext *ctx, int excp)
106 tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
107 TCGv_i32 helper_tmp = tcg_const_i32(excp);
108 gen_helper_raise_exception(cpu_env, helper_tmp);
109 tcg_temp_free_i32(helper_tmp);
110 ctx->base.is_jmp = DISAS_NORETURN;
113 static void generate_exception_mbadaddr(DisasContext *ctx, int excp)
115 tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
116 tcg_gen_st_tl(cpu_pc, cpu_env, offsetof(CPURISCVState, badaddr));
117 TCGv_i32 helper_tmp = tcg_const_i32(excp);
118 gen_helper_raise_exception(cpu_env, helper_tmp);
119 tcg_temp_free_i32(helper_tmp);
120 ctx->base.is_jmp = DISAS_NORETURN;
123 static void gen_exception_debug(void)
125 TCGv_i32 helper_tmp = tcg_const_i32(EXCP_DEBUG);
126 gen_helper_raise_exception(cpu_env, helper_tmp);
127 tcg_temp_free_i32(helper_tmp);
130 /* Wrapper around tcg_gen_exit_tb that handles single stepping */
131 static void exit_tb(DisasContext *ctx)
133 if (ctx->base.singlestep_enabled) {
134 gen_exception_debug();
136 tcg_gen_exit_tb(NULL, 0);
140 /* Wrapper around tcg_gen_lookup_and_goto_ptr that handles single stepping */
141 static void lookup_and_goto_ptr(DisasContext *ctx)
143 if (ctx->base.singlestep_enabled) {
144 gen_exception_debug();
146 tcg_gen_lookup_and_goto_ptr();
150 static void gen_exception_illegal(DisasContext *ctx)
152 generate_exception(ctx, RISCV_EXCP_ILLEGAL_INST);
155 static void gen_exception_inst_addr_mis(DisasContext *ctx)
157 generate_exception_mbadaddr(ctx, RISCV_EXCP_INST_ADDR_MIS);
160 static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
162 if (unlikely(ctx->base.singlestep_enabled)) {
166 #ifndef CONFIG_USER_ONLY
167 return (ctx->base.tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
173 static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
175 if (use_goto_tb(ctx, dest)) {
176 /* chaining is only allowed when the jump is to the same page */
178 tcg_gen_movi_tl(cpu_pc, dest);
180 /* No need to check for single stepping here as use_goto_tb() will
181 * return false in case of single stepping.
183 tcg_gen_exit_tb(ctx->base.tb, n);
185 tcg_gen_movi_tl(cpu_pc, dest);
186 lookup_and_goto_ptr(ctx);
190 /* Wrapper for getting reg values - need to check of reg is zero since
191 * cpu_gpr[0] is not actually allocated
193 static inline void gen_get_gpr(TCGv t, int reg_num)
196 tcg_gen_movi_tl(t, 0);
198 tcg_gen_mov_tl(t, cpu_gpr[reg_num]);
202 /* Wrapper for setting reg values - need to check of reg is zero since
203 * cpu_gpr[0] is not actually allocated. this is more for safety purposes,
204 * since we usually avoid calling the OP_TYPE_gen function if we see a write to
207 static inline void gen_set_gpr(int reg_num_dst, TCGv t)
209 if (reg_num_dst != 0) {
210 tcg_gen_mov_tl(cpu_gpr[reg_num_dst], t);
214 static void gen_mulhsu(TCGv ret, TCGv arg1, TCGv arg2)
216 TCGv rl = tcg_temp_new();
217 TCGv rh = tcg_temp_new();
219 tcg_gen_mulu2_tl(rl, rh, arg1, arg2);
220 /* fix up for one negative */
221 tcg_gen_sari_tl(rl, arg1, TARGET_LONG_BITS - 1);
222 tcg_gen_and_tl(rl, rl, arg2);
223 tcg_gen_sub_tl(ret, rh, rl);
229 static void gen_div(TCGv ret, TCGv source1, TCGv source2)
231 TCGv cond1, cond2, zeroreg, resultopt1;
233 * Handle by altering args to tcg_gen_div to produce req'd results:
234 * For overflow: want source1 in source1 and 1 in source2
235 * For div by zero: want -1 in source1 and 1 in source2 -> -1 result
237 cond1 = tcg_temp_new();
238 cond2 = tcg_temp_new();
239 zeroreg = tcg_const_tl(0);
240 resultopt1 = tcg_temp_new();
242 tcg_gen_movi_tl(resultopt1, (target_ulong)-1);
243 tcg_gen_setcondi_tl(TCG_COND_EQ, cond2, source2, (target_ulong)(~0L));
244 tcg_gen_setcondi_tl(TCG_COND_EQ, cond1, source1,
245 ((target_ulong)1) << (TARGET_LONG_BITS - 1));
246 tcg_gen_and_tl(cond1, cond1, cond2); /* cond1 = overflow */
247 tcg_gen_setcondi_tl(TCG_COND_EQ, cond2, source2, 0); /* cond2 = div 0 */
248 /* if div by zero, set source1 to -1, otherwise don't change */
249 tcg_gen_movcond_tl(TCG_COND_EQ, source1, cond2, zeroreg, source1,
251 /* if overflow or div by zero, set source2 to 1, else don't change */
252 tcg_gen_or_tl(cond1, cond1, cond2);
253 tcg_gen_movi_tl(resultopt1, (target_ulong)1);
254 tcg_gen_movcond_tl(TCG_COND_EQ, source2, cond1, zeroreg, source2,
256 tcg_gen_div_tl(ret, source1, source2);
258 tcg_temp_free(cond1);
259 tcg_temp_free(cond2);
260 tcg_temp_free(zeroreg);
261 tcg_temp_free(resultopt1);
264 static void gen_divu(TCGv ret, TCGv source1, TCGv source2)
266 TCGv cond1, zeroreg, resultopt1;
267 cond1 = tcg_temp_new();
269 zeroreg = tcg_const_tl(0);
270 resultopt1 = tcg_temp_new();
272 tcg_gen_setcondi_tl(TCG_COND_EQ, cond1, source2, 0);
273 tcg_gen_movi_tl(resultopt1, (target_ulong)-1);
274 tcg_gen_movcond_tl(TCG_COND_EQ, source1, cond1, zeroreg, source1,
276 tcg_gen_movi_tl(resultopt1, (target_ulong)1);
277 tcg_gen_movcond_tl(TCG_COND_EQ, source2, cond1, zeroreg, source2,
279 tcg_gen_divu_tl(ret, source1, source2);
281 tcg_temp_free(cond1);
282 tcg_temp_free(zeroreg);
283 tcg_temp_free(resultopt1);
286 static void gen_rem(TCGv ret, TCGv source1, TCGv source2)
288 TCGv cond1, cond2, zeroreg, resultopt1;
290 cond1 = tcg_temp_new();
291 cond2 = tcg_temp_new();
292 zeroreg = tcg_const_tl(0);
293 resultopt1 = tcg_temp_new();
295 tcg_gen_movi_tl(resultopt1, 1L);
296 tcg_gen_setcondi_tl(TCG_COND_EQ, cond2, source2, (target_ulong)-1);
297 tcg_gen_setcondi_tl(TCG_COND_EQ, cond1, source1,
298 (target_ulong)1 << (TARGET_LONG_BITS - 1));
299 tcg_gen_and_tl(cond2, cond1, cond2); /* cond1 = overflow */
300 tcg_gen_setcondi_tl(TCG_COND_EQ, cond1, source2, 0); /* cond2 = div 0 */
301 /* if overflow or div by zero, set source2 to 1, else don't change */
302 tcg_gen_or_tl(cond2, cond1, cond2);
303 tcg_gen_movcond_tl(TCG_COND_EQ, source2, cond2, zeroreg, source2,
305 tcg_gen_rem_tl(resultopt1, source1, source2);
306 /* if div by zero, just return the original dividend */
307 tcg_gen_movcond_tl(TCG_COND_EQ, ret, cond1, zeroreg, resultopt1,
310 tcg_temp_free(cond1);
311 tcg_temp_free(cond2);
312 tcg_temp_free(zeroreg);
313 tcg_temp_free(resultopt1);
316 static void gen_remu(TCGv ret, TCGv source1, TCGv source2)
318 TCGv cond1, zeroreg, resultopt1;
319 cond1 = tcg_temp_new();
320 zeroreg = tcg_const_tl(0);
321 resultopt1 = tcg_temp_new();
323 tcg_gen_movi_tl(resultopt1, (target_ulong)1);
324 tcg_gen_setcondi_tl(TCG_COND_EQ, cond1, source2, 0);
325 tcg_gen_movcond_tl(TCG_COND_EQ, source2, cond1, zeroreg, source2,
327 tcg_gen_remu_tl(resultopt1, source1, source2);
328 /* if div by zero, just return the original dividend */
329 tcg_gen_movcond_tl(TCG_COND_EQ, ret, cond1, zeroreg, resultopt1,
332 tcg_temp_free(cond1);
333 tcg_temp_free(zeroreg);
334 tcg_temp_free(resultopt1);
337 static void gen_jal(DisasContext *ctx, int rd, target_ulong imm)
339 target_ulong next_pc;
341 /* check misaligned: */
342 next_pc = ctx->base.pc_next + imm;
343 if (!has_ext(ctx, RVC)) {
344 if ((next_pc & 0x3) != 0) {
345 gen_exception_inst_addr_mis(ctx);
350 tcg_gen_movi_tl(cpu_gpr[rd], ctx->pc_succ_insn);
353 gen_goto_tb(ctx, 0, ctx->base.pc_next + imm); /* must use this for safety */
354 ctx->base.is_jmp = DISAS_NORETURN;
357 #ifdef TARGET_RISCV64
358 static void gen_load_c(DisasContext *ctx, uint32_t opc, int rd, int rs1,
361 TCGv t0 = tcg_temp_new();
362 TCGv t1 = tcg_temp_new();
363 gen_get_gpr(t0, rs1);
364 tcg_gen_addi_tl(t0, t0, imm);
365 int memop = tcg_memop_lookup[(opc >> 12) & 0x7];
368 gen_exception_illegal(ctx);
372 tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, memop);
378 static void gen_store_c(DisasContext *ctx, uint32_t opc, int rs1, int rs2,
381 TCGv t0 = tcg_temp_new();
382 TCGv dat = tcg_temp_new();
383 gen_get_gpr(t0, rs1);
384 tcg_gen_addi_tl(t0, t0, imm);
385 gen_get_gpr(dat, rs2);
386 int memop = tcg_memop_lookup[(opc >> 12) & 0x7];
389 gen_exception_illegal(ctx);
393 tcg_gen_qemu_st_tl(dat, t0, ctx->mem_idx, memop);
399 #ifndef CONFIG_USER_ONLY
400 /* The states of mstatus_fs are:
401 * 0 = disabled, 1 = initial, 2 = clean, 3 = dirty
402 * We will have already diagnosed disabled state,
403 * and need to turn initial/clean into dirty.
405 static void mark_fs_dirty(DisasContext *ctx)
408 if (ctx->mstatus_fs == MSTATUS_FS) {
411 /* Remember the state change for the rest of the TB. */
412 ctx->mstatus_fs = MSTATUS_FS;
414 tmp = tcg_temp_new();
415 tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus));
416 tcg_gen_ori_tl(tmp, tmp, MSTATUS_FS | MSTATUS_SD);
417 tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus));
419 if (ctx->virt_enabled) {
420 tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus_hs));
421 tcg_gen_ori_tl(tmp, tmp, MSTATUS_FS | MSTATUS_SD);
422 tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus_hs));
427 static inline void mark_fs_dirty(DisasContext *ctx) { }
430 #if !defined(TARGET_RISCV64)
431 static void gen_fp_load(DisasContext *ctx, uint32_t opc, int rd,
432 int rs1, target_long imm)
436 if (ctx->mstatus_fs == 0) {
437 gen_exception_illegal(ctx);
442 gen_get_gpr(t0, rs1);
443 tcg_gen_addi_tl(t0, t0, imm);
447 if (!has_ext(ctx, RVF)) {
450 tcg_gen_qemu_ld_i64(cpu_fpr[rd], t0, ctx->mem_idx, MO_TEUL);
451 /* RISC-V requires NaN-boxing of narrower width floating point values */
452 tcg_gen_ori_i64(cpu_fpr[rd], cpu_fpr[rd], 0xffffffff00000000ULL);
455 if (!has_ext(ctx, RVD)) {
458 tcg_gen_qemu_ld_i64(cpu_fpr[rd], t0, ctx->mem_idx, MO_TEQ);
462 gen_exception_illegal(ctx);
470 static void gen_fp_store(DisasContext *ctx, uint32_t opc, int rs1,
471 int rs2, target_long imm)
475 if (ctx->mstatus_fs == 0) {
476 gen_exception_illegal(ctx);
481 gen_get_gpr(t0, rs1);
482 tcg_gen_addi_tl(t0, t0, imm);
486 if (!has_ext(ctx, RVF)) {
489 tcg_gen_qemu_st_i64(cpu_fpr[rs2], t0, ctx->mem_idx, MO_TEUL);
492 if (!has_ext(ctx, RVD)) {
495 tcg_gen_qemu_st_i64(cpu_fpr[rs2], t0, ctx->mem_idx, MO_TEQ);
499 gen_exception_illegal(ctx);
507 static void gen_set_rm(DisasContext *ctx, int rm)
511 if (ctx->frm == rm) {
515 t0 = tcg_const_i32(rm);
516 gen_helper_set_rounding_mode(cpu_env, t0);
517 tcg_temp_free_i32(t0);
520 static void decode_RV32_64C0(DisasContext *ctx, uint16_t opcode)
522 uint8_t funct3 = extract16(opcode, 13, 3);
523 uint8_t rd_rs2 = GET_C_RS2S(opcode);
524 uint8_t rs1s = GET_C_RS1S(opcode);
528 #if defined(TARGET_RISCV64)
529 /* C.LD(RV64/128) -> ld rd', offset[7:3](rs1')*/
530 gen_load_c(ctx, OPC_RISC_LD, rd_rs2, rs1s,
531 GET_C_LD_IMM(opcode));
533 /* C.FLW (RV32) -> flw rd', offset[6:2](rs1')*/
534 gen_fp_load(ctx, OPC_RISC_FLW, rd_rs2, rs1s,
535 GET_C_LW_IMM(opcode));
539 #if defined(TARGET_RISCV64)
540 /* C.SD (RV64/128) -> sd rs2', offset[7:3](rs1')*/
541 gen_store_c(ctx, OPC_RISC_SD, rs1s, rd_rs2,
542 GET_C_LD_IMM(opcode));
544 /* C.FSW (RV32) -> fsw rs2', offset[6:2](rs1')*/
545 gen_fp_store(ctx, OPC_RISC_FSW, rs1s, rd_rs2,
546 GET_C_LW_IMM(opcode));
552 static void decode_RV32_64C(DisasContext *ctx, uint16_t opcode)
554 uint8_t op = extract16(opcode, 0, 2);
558 decode_RV32_64C0(ctx, opcode);
563 static int ex_plus_1(DisasContext *ctx, int nf)
568 #define EX_SH(amount) \
569 static int ex_shift_##amount(DisasContext *ctx, int imm) \
571 return imm << amount; \
579 #define REQUIRE_EXT(ctx, ext) do { \
580 if (!has_ext(ctx, ext)) { \
585 static int ex_rvc_register(DisasContext *ctx, int reg)
590 static int ex_rvc_shifti(DisasContext *ctx, int imm)
592 /* For RV128 a shamt of 0 means a shift by 64. */
593 return imm ? imm : 64;
596 /* Include the auto-generated decoder for 32 bit insn */
597 #include "decode-insn32.c.inc"
599 static bool gen_arith_imm_fn(DisasContext *ctx, arg_i *a,
600 void (*func)(TCGv, TCGv, target_long))
603 source1 = tcg_temp_new();
605 gen_get_gpr(source1, a->rs1);
607 (*func)(source1, source1, a->imm);
609 gen_set_gpr(a->rd, source1);
610 tcg_temp_free(source1);
614 static bool gen_arith_imm_tl(DisasContext *ctx, arg_i *a,
615 void (*func)(TCGv, TCGv, TCGv))
617 TCGv source1, source2;
618 source1 = tcg_temp_new();
619 source2 = tcg_temp_new();
621 gen_get_gpr(source1, a->rs1);
622 tcg_gen_movi_tl(source2, a->imm);
624 (*func)(source1, source1, source2);
626 gen_set_gpr(a->rd, source1);
627 tcg_temp_free(source1);
628 tcg_temp_free(source2);
632 #ifdef TARGET_RISCV64
633 static void gen_addw(TCGv ret, TCGv arg1, TCGv arg2)
635 tcg_gen_add_tl(ret, arg1, arg2);
636 tcg_gen_ext32s_tl(ret, ret);
639 static void gen_subw(TCGv ret, TCGv arg1, TCGv arg2)
641 tcg_gen_sub_tl(ret, arg1, arg2);
642 tcg_gen_ext32s_tl(ret, ret);
645 static void gen_mulw(TCGv ret, TCGv arg1, TCGv arg2)
647 tcg_gen_mul_tl(ret, arg1, arg2);
648 tcg_gen_ext32s_tl(ret, ret);
651 static bool gen_arith_div_w(DisasContext *ctx, arg_r *a,
652 void(*func)(TCGv, TCGv, TCGv))
654 TCGv source1, source2;
655 source1 = tcg_temp_new();
656 source2 = tcg_temp_new();
658 gen_get_gpr(source1, a->rs1);
659 gen_get_gpr(source2, a->rs2);
660 tcg_gen_ext32s_tl(source1, source1);
661 tcg_gen_ext32s_tl(source2, source2);
663 (*func)(source1, source1, source2);
665 tcg_gen_ext32s_tl(source1, source1);
666 gen_set_gpr(a->rd, source1);
667 tcg_temp_free(source1);
668 tcg_temp_free(source2);
672 static bool gen_arith_div_uw(DisasContext *ctx, arg_r *a,
673 void(*func)(TCGv, TCGv, TCGv))
675 TCGv source1, source2;
676 source1 = tcg_temp_new();
677 source2 = tcg_temp_new();
679 gen_get_gpr(source1, a->rs1);
680 gen_get_gpr(source2, a->rs2);
681 tcg_gen_ext32u_tl(source1, source1);
682 tcg_gen_ext32u_tl(source2, source2);
684 (*func)(source1, source1, source2);
686 tcg_gen_ext32s_tl(source1, source1);
687 gen_set_gpr(a->rd, source1);
688 tcg_temp_free(source1);
689 tcg_temp_free(source2);
695 static bool gen_arith(DisasContext *ctx, arg_r *a,
696 void(*func)(TCGv, TCGv, TCGv))
698 TCGv source1, source2;
699 source1 = tcg_temp_new();
700 source2 = tcg_temp_new();
702 gen_get_gpr(source1, a->rs1);
703 gen_get_gpr(source2, a->rs2);
705 (*func)(source1, source1, source2);
707 gen_set_gpr(a->rd, source1);
708 tcg_temp_free(source1);
709 tcg_temp_free(source2);
713 static bool gen_shift(DisasContext *ctx, arg_r *a,
714 void(*func)(TCGv, TCGv, TCGv))
716 TCGv source1 = tcg_temp_new();
717 TCGv source2 = tcg_temp_new();
719 gen_get_gpr(source1, a->rs1);
720 gen_get_gpr(source2, a->rs2);
722 tcg_gen_andi_tl(source2, source2, TARGET_LONG_BITS - 1);
723 (*func)(source1, source1, source2);
725 gen_set_gpr(a->rd, source1);
726 tcg_temp_free(source1);
727 tcg_temp_free(source2);
731 /* Include insn module translation function */
732 #include "insn_trans/trans_rvi.c.inc"
733 #include "insn_trans/trans_rvm.c.inc"
734 #include "insn_trans/trans_rva.c.inc"
735 #include "insn_trans/trans_rvf.c.inc"
736 #include "insn_trans/trans_rvd.c.inc"
737 #include "insn_trans/trans_rvh.c.inc"
738 #include "insn_trans/trans_rvv.c.inc"
739 #include "insn_trans/trans_privileged.c.inc"
741 /* Include the auto-generated decoder for 16 bit insn */
742 #include "decode-insn16.c.inc"
744 static void decode_opc(CPURISCVState *env, DisasContext *ctx, uint16_t opcode)
746 /* check for compressed insn */
747 if (extract16(opcode, 0, 2) != 3) {
748 if (!has_ext(ctx, RVC)) {
749 gen_exception_illegal(ctx);
751 ctx->pc_succ_insn = ctx->base.pc_next + 2;
752 if (!decode_insn16(ctx, opcode)) {
753 /* fall back to old decoder */
754 decode_RV32_64C(ctx, opcode);
758 uint32_t opcode32 = opcode;
759 opcode32 = deposit32(opcode32, 16, 16,
760 translator_lduw(env, ctx->base.pc_next + 2));
761 ctx->pc_succ_insn = ctx->base.pc_next + 4;
762 if (!decode_insn32(ctx, opcode32)) {
763 gen_exception_illegal(ctx);
768 static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
770 DisasContext *ctx = container_of(dcbase, DisasContext, base);
771 CPURISCVState *env = cs->env_ptr;
772 RISCVCPU *cpu = RISCV_CPU(cs);
773 uint32_t tb_flags = ctx->base.tb->flags;
775 ctx->pc_succ_insn = ctx->base.pc_first;
776 ctx->mem_idx = tb_flags & TB_FLAGS_MMU_MASK;
777 ctx->mstatus_fs = tb_flags & TB_FLAGS_MSTATUS_FS;
778 ctx->priv_ver = env->priv_ver;
779 #if !defined(CONFIG_USER_ONLY)
780 if (riscv_has_ext(env, RVH)) {
781 ctx->virt_enabled = riscv_cpu_virt_enabled(env);
782 if (env->priv_ver == PRV_M &&
783 get_field(env->mstatus, MSTATUS_MPRV) &&
784 MSTATUS_MPV_ISSET(env)) {
785 ctx->virt_enabled = true;
786 } else if (env->priv == PRV_S &&
787 !riscv_cpu_virt_enabled(env) &&
788 get_field(env->hstatus, HSTATUS_SPRV) &&
789 get_field(env->hstatus, HSTATUS_SPV)) {
790 ctx->virt_enabled = true;
793 ctx->virt_enabled = false;
796 ctx->virt_enabled = false;
798 ctx->misa = env->misa;
799 ctx->frm = -1; /* unknown rounding mode */
800 ctx->ext_ifencei = cpu->cfg.ext_ifencei;
801 ctx->vlen = cpu->cfg.vlen;
802 ctx->vill = FIELD_EX32(tb_flags, TB_FLAGS, VILL);
803 ctx->sew = FIELD_EX32(tb_flags, TB_FLAGS, SEW);
804 ctx->lmul = FIELD_EX32(tb_flags, TB_FLAGS, LMUL);
805 ctx->mlen = 1 << (ctx->sew + 3 - ctx->lmul);
806 ctx->vl_eq_vlmax = FIELD_EX32(tb_flags, TB_FLAGS, VL_EQ_VLMAX);
809 static void riscv_tr_tb_start(DisasContextBase *db, CPUState *cpu)
813 static void riscv_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
815 DisasContext *ctx = container_of(dcbase, DisasContext, base);
817 tcg_gen_insn_start(ctx->base.pc_next);
820 static bool riscv_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cpu,
821 const CPUBreakpoint *bp)
823 DisasContext *ctx = container_of(dcbase, DisasContext, base);
825 tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
826 ctx->base.is_jmp = DISAS_NORETURN;
827 gen_exception_debug();
828 /* The address covered by the breakpoint must be included in
829 [tb->pc, tb->pc + tb->size) in order to for it to be
830 properly cleared -- thus we increment the PC here so that
831 the logic setting tb->size below does the right thing. */
832 ctx->base.pc_next += 4;
836 static void riscv_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu)
838 DisasContext *ctx = container_of(dcbase, DisasContext, base);
839 CPURISCVState *env = cpu->env_ptr;
840 uint16_t opcode16 = translator_lduw(env, ctx->base.pc_next);
842 decode_opc(env, ctx, opcode16);
843 ctx->base.pc_next = ctx->pc_succ_insn;
845 if (ctx->base.is_jmp == DISAS_NEXT) {
846 target_ulong page_start;
848 page_start = ctx->base.pc_first & TARGET_PAGE_MASK;
849 if (ctx->base.pc_next - page_start >= TARGET_PAGE_SIZE) {
850 ctx->base.is_jmp = DISAS_TOO_MANY;
855 static void riscv_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
857 DisasContext *ctx = container_of(dcbase, DisasContext, base);
859 switch (ctx->base.is_jmp) {
861 gen_goto_tb(ctx, 0, ctx->base.pc_next);
866 g_assert_not_reached();
870 static void riscv_tr_disas_log(const DisasContextBase *dcbase, CPUState *cpu)
872 #ifndef CONFIG_USER_ONLY
873 RISCVCPU *rvcpu = RISCV_CPU(cpu);
874 CPURISCVState *env = &rvcpu->env;
877 qemu_log("IN: %s\n", lookup_symbol(dcbase->pc_first));
878 #ifndef CONFIG_USER_ONLY
879 qemu_log("Priv: "TARGET_FMT_ld"; Virt: "TARGET_FMT_ld"\n", env->priv, env->virt);
881 log_target_disas(cpu, dcbase->pc_first, dcbase->tb->size);
884 static const TranslatorOps riscv_tr_ops = {
885 .init_disas_context = riscv_tr_init_disas_context,
886 .tb_start = riscv_tr_tb_start,
887 .insn_start = riscv_tr_insn_start,
888 .breakpoint_check = riscv_tr_breakpoint_check,
889 .translate_insn = riscv_tr_translate_insn,
890 .tb_stop = riscv_tr_tb_stop,
891 .disas_log = riscv_tr_disas_log,
894 void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
898 translator_loop(&riscv_tr_ops, &ctx.base, cs, tb, max_insns);
901 void riscv_translate_init(void)
905 /* cpu_gpr[0] is a placeholder for the zero register. Do not use it. */
906 /* Use the gen_set_gpr and gen_get_gpr helper functions when accessing */
907 /* registers, unless you specifically block reads/writes to reg 0 */
910 for (i = 1; i < 32; i++) {
911 cpu_gpr[i] = tcg_global_mem_new(cpu_env,
912 offsetof(CPURISCVState, gpr[i]), riscv_int_regnames[i]);
915 for (i = 0; i < 32; i++) {
916 cpu_fpr[i] = tcg_global_mem_new_i64(cpu_env,
917 offsetof(CPURISCVState, fpr[i]), riscv_fpr_regnames[i]);
920 cpu_pc = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, pc), "pc");
921 cpu_vl = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, vl), "vl");
922 load_res = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_res),
924 load_val = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_val),