1 files changed, 577 insertions, 0 deletions
diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc
new file mode 100644
index 0000000000..d04ca0394c
--- /dev/null
+++ b/target/riscv/insn_trans/trans_rvi.c.inc
@@ -0,0 +1,577 @@
+/*
+ * RISC-V translation routines for the RVXI Base Integer Instruction Set.
+ *
+ * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
+ * Copyright (c) 2018 Peer Adelt, peer.adelt@hni.uni-paderborn.de
+ *                    Bastian Koppelmann, kbastian@mail.uni-paderborn.de
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+static bool trans_illegal(DisasContext *ctx, arg_empty *a)
+{
+    gen_exception_illegal(ctx);
+    return true;
+}
+
+static bool trans_lui(DisasContext *ctx, arg_lui *a)
+{
+    if (a->rd != 0) {
+        tcg_gen_movi_tl(cpu_gpr[a->rd], a->imm);
+    }
+    return true;
+}
+
+static bool trans_auipc(DisasContext *ctx, arg_auipc *a)
+{
+    if (a->rd != 0) {
+        tcg_gen_movi_tl(cpu_gpr[a->rd], a->imm + ctx->base.pc_next);
+    }
+    return true;
+}
+
+static bool trans_jal(DisasContext *ctx, arg_jal *a)
+{
+    gen_jal(ctx, a->rd, a->imm);
+    return true;
+}
+
+static bool trans_jalr(DisasContext *ctx, arg_jalr *a)
+{
+    /* no chaining with JALR */
+    TCGLabel *misaligned = NULL;
+    TCGv t0 = tcg_temp_new();
+
+
+    gen_get_gpr(cpu_pc, a->rs1);
+    tcg_gen_addi_tl(cpu_pc, cpu_pc, a->imm);
+    tcg_gen_andi_tl(cpu_pc, cpu_pc, (target_ulong)-2);
+
+    if (!has_ext(ctx, RVC)) {
+        misaligned = gen_new_label();
+        tcg_gen_andi_tl(t0, cpu_pc, 0x2);
+        tcg_gen_brcondi_tl(TCG_COND_NE, t0, 0x0, misaligned);
+    }
+
+    if (a->rd != 0) {
+        tcg_gen_movi_tl(cpu_gpr[a->rd], ctx->pc_succ_insn);
+    }
+    lookup_and_goto_ptr(ctx);
+
+    if (misaligned) {
+        gen_set_label(misaligned);
+        gen_exception_inst_addr_mis(ctx);
+    }
+    ctx->base.is_jmp = DISAS_NORETURN;
+
+    tcg_temp_free(t0);
+    return true;
+}
+
+static bool gen_branch(DisasContext *ctx, arg_b *a, TCGCond cond)
+{
+    TCGLabel *l = gen_new_label();
+    TCGv source1, source2;
+    source1 = tcg_temp_new();
+    source2 = tcg_temp_new();
+    gen_get_gpr(source1, a->rs1);
+    gen_get_gpr(source2, a->rs2);
+
+    tcg_gen_brcond_tl(cond, source1, source2, l);
+    gen_goto_tb(ctx, 1, ctx->pc_succ_insn);
+    gen_set_label(l); /* branch taken */
+
+    if (!has_ext(ctx, RVC) && ((ctx->base.pc_next + a->imm) & 0x3)) {
+        /* misaligned */
+        gen_exception_inst_addr_mis(ctx);
+    } else {
+        gen_goto_tb(ctx, 0, ctx->base.pc_next + a->imm);
+    }
+    ctx->base.is_jmp = DISAS_NORETURN;
+
+    tcg_temp_free(source1);
+    tcg_temp_free(source2);
+
+    return true;
+}
+
+static bool trans_beq(DisasContext *ctx, arg_beq *a)
+{
+    return gen_branch(ctx, a, TCG_COND_EQ);
+}
+
+static bool trans_bne(DisasContext *ctx, arg_bne *a)
+{
+    return gen_branch(ctx, a, TCG_COND_NE);
+}
+
+static bool trans_blt(DisasContext *ctx, arg_blt *a)
+{
+    return gen_branch(ctx, a, TCG_COND_LT);
+}
+
+static bool trans_bge(DisasContext *ctx, arg_bge *a)
+{
+    return gen_branch(ctx, a, TCG_COND_GE);
+}
+
+static bool trans_bltu(DisasContext *ctx, arg_bltu *a)
+{
+    return gen_branch(ctx, a, TCG_COND_LTU);
+}
+
+static bool trans_bgeu(DisasContext *ctx, arg_bgeu *a)
+{
+    return gen_branch(ctx, a, TCG_COND_GEU);
+}
+
+static bool gen_load(DisasContext *ctx, arg_lb *a, MemOp memop)
+{
+    TCGv t0 = tcg_temp_new();
+    TCGv t1 = tcg_temp_new();
+    gen_get_gpr(t0, a->rs1);
+    tcg_gen_addi_tl(t0, t0, a->imm);
+
+    tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, memop);
+    gen_set_gpr(a->rd, t1);
+    tcg_temp_free(t0);
+    tcg_temp_free(t1);
+    return true;
+}
+
+static bool trans_lb(DisasContext *ctx, arg_lb *a)
+{
+    return gen_load(ctx, a, MO_SB);
+}
+
+static bool trans_lh(DisasContext *ctx, arg_lh *a)
+{
+    return gen_load(ctx, a, MO_TESW);
+}
+
+static bool trans_lw(DisasContext *ctx, arg_lw *a)
+{
+    return gen_load(ctx, a, MO_TESL);
+}
+
+static bool trans_lbu(DisasContext *ctx, arg_lbu *a)
+{
+    return gen_load(ctx, a, MO_UB);
+}
+
+static bool trans_lhu(DisasContext *ctx, arg_lhu *a)
+{
+    return gen_load(ctx, a, MO_TEUW);
+}
+
+static bool gen_store(DisasContext *ctx, arg_sb *a, MemOp memop)
+{
+    TCGv t0 = tcg_temp_new();
+    TCGv dat = tcg_temp_new();
+    gen_get_gpr(t0, a->rs1);
+    tcg_gen_addi_tl(t0, t0, a->imm);
+    gen_get_gpr(dat, a->rs2);
+
+    tcg_gen_qemu_st_tl(dat, t0, ctx->mem_idx, memop);
+    tcg_temp_free(t0);
+    tcg_temp_free(dat);
+    return true;
+}
+
+
+static bool trans_sb(DisasContext *ctx, arg_sb *a)
+{
+    return gen_store(ctx, a, MO_SB);
+}
+
+static bool trans_sh(DisasContext *ctx, arg_sh *a)
+{
+    return gen_store(ctx, a, MO_TESW);
+}
+
+static bool trans_sw(DisasContext *ctx, arg_sw *a)
+{
+    return gen_store(ctx, a, MO_TESL);
+}
+
+#ifdef TARGET_RISCV64
+static bool trans_lwu(DisasContext *ctx, arg_lwu *a)
+{
+    return gen_load(ctx, a, MO_TEUL);
+}
+
+static bool trans_ld(DisasContext *ctx, arg_ld *a)
+{
+    return gen_load(ctx, a, MO_TEQ);
+}
+
+static bool trans_sd(DisasContext *ctx, arg_sd *a)
+{
+    return gen_store(ctx, a, MO_TEQ);
+}
+#endif
+
+static bool trans_addi(DisasContext *ctx, arg_addi *a)
+{
+    return gen_arith_imm_fn(ctx, a, &tcg_gen_addi_tl);
+}
+
+static void gen_slt(TCGv ret, TCGv s1, TCGv s2)
+{
+    tcg_gen_setcond_tl(TCG_COND_LT, ret, s1, s2);
+}
+
+static void gen_sltu(TCGv ret, TCGv s1, TCGv s2)
+{
+    tcg_gen_setcond_tl(TCG_COND_LTU, ret, s1, s2);
+}
+
+
+static bool trans_slti(DisasContext *ctx, arg_slti *a)
+{
+    return gen_arith_imm_tl(ctx, a, &gen_slt);
+}
+
+static bool trans_sltiu(DisasContext *ctx, arg_sltiu *a)
+{
+    return gen_arith_imm_tl(ctx, a, &gen_sltu);
+}
+
+static bool trans_xori(DisasContext *ctx, arg_xori *a)
+{
+    return gen_arith_imm_fn(ctx, a, &tcg_gen_xori_tl);
+}
+static bool trans_ori(DisasContext *ctx, arg_ori *a)
+{
+    return gen_arith_imm_fn(ctx, a, &tcg_gen_ori_tl);
+}
+static bool trans_andi(DisasContext *ctx, arg_andi *a)
+{
+    return gen_arith_imm_fn(ctx, a, &tcg_gen_andi_tl);
+}
+static bool trans_slli(DisasContext *ctx, arg_slli *a)
+{
+    if (a->shamt >= TARGET_LONG_BITS) {
+        return false;
+    }
+
+    if (a->rd != 0) {
+        TCGv t = tcg_temp_new();
+        gen_get_gpr(t, a->rs1);
+
+        tcg_gen_shli_tl(t, t, a->shamt);
+
+        gen_set_gpr(a->rd, t);
+        tcg_temp_free(t);
+    } /* NOP otherwise */
+    return true;
+}
+
+static bool trans_srli(DisasContext *ctx, arg_srli *a)
+{
+    if (a->shamt >= TARGET_LONG_BITS) {
+        return false;
+    }
+
+    if (a->rd != 0) {
+        TCGv t = tcg_temp_new();
+        gen_get_gpr(t, a->rs1);
+
+        tcg_gen_shri_tl(t, t, a->shamt);
+        gen_set_gpr(a->rd, t);
+        tcg_temp_free(t);
+    } /* NOP otherwise */
+    return true;
+}
+
+static bool trans_srai(DisasContext *ctx, arg_srai *a)
+{
+    if (a->shamt >= TARGET_LONG_BITS) {
+        return false;
+    }
+
+    if (a->rd != 0) {
+        TCGv t = tcg_temp_new();
+        gen_get_gpr(t, a->rs1);
+
+        tcg_gen_sari_tl(t, t, a->shamt);
+        gen_set_gpr(a->rd, t);
+        tcg_temp_free(t);
+    } /* NOP otherwise */
+    return true;
+}
+
+static bool trans_add(DisasContext *ctx, arg_add *a)
+{
+    return gen_arith(ctx, a, &tcg_gen_add_tl);
+}
+
+static bool trans_sub(DisasContext *ctx, arg_sub *a)
+{
+    return gen_arith(ctx, a, &tcg_gen_sub_tl);
+}
+
+static bool trans_sll(DisasContext *ctx, arg_sll *a)
+{
+    return gen_shift(ctx, a, &tcg_gen_shl_tl);
+}
+
+static bool trans_slt(DisasContext *ctx, arg_slt *a)
+{
+    return gen_arith(ctx, a, &gen_slt);
+}
+
+static bool trans_sltu(DisasContext *ctx, arg_sltu *a)
+{
+    return gen_arith(ctx, a, &gen_sltu);
+}
+
+static bool trans_xor(DisasContext *ctx, arg_xor *a)
+{
+    return gen_arith(ctx, a, &tcg_gen_xor_tl);
+}
+
+static bool trans_srl(DisasContext *ctx, arg_srl *a)
+{
+    return gen_shift(ctx, a, &tcg_gen_shr_tl);
+}
+
+static bool trans_sra(DisasContext *ctx, arg_sra *a)
+{
+    return gen_shift(ctx, a, &tcg_gen_sar_tl);
+}
+
+static bool trans_or(DisasContext *ctx, arg_or *a)
+{
+    return gen_arith(ctx, a, &tcg_gen_or_tl);
+}
+
+static bool trans_and(DisasContext *ctx, arg_and *a)
+{
+    return gen_arith(ctx, a, &tcg_gen_and_tl);
+}
+
+#ifdef TARGET_RISCV64
+static bool trans_addiw(DisasContext *ctx, arg_addiw *a)
+{
+    return gen_arith_imm_tl(ctx, a, &gen_addw);
+}
+
+static bool trans_slliw(DisasContext *ctx, arg_slliw *a)
+{
+    TCGv source1;
+    source1 = tcg_temp_new();
+    gen_get_gpr(source1, a->rs1);
+
+    tcg_gen_shli_tl(source1, source1, a->shamt);
+    tcg_gen_ext32s_tl(source1, source1);
+    gen_set_gpr(a->rd, source1);
+
+    tcg_temp_free(source1);
+    return true;
+}
+
+static bool trans_srliw(DisasContext *ctx, arg_srliw *a)
+{
+    TCGv t = tcg_temp_new();
+    gen_get_gpr(t, a->rs1);
+    tcg_gen_extract_tl(t, t, a->shamt, 32 - a->shamt);
+    /* sign-extend for W instructions */
+    tcg_gen_ext32s_tl(t, t);
+    gen_set_gpr(a->rd, t);
+    tcg_temp_free(t);
+    return true;
+}
+
+static bool trans_sraiw(DisasContext *ctx, arg_sraiw *a)
+{
+    TCGv t = tcg_temp_new();
+    gen_get_gpr(t, a->rs1);
+    tcg_gen_sextract_tl(t, t, a->shamt, 32 - a->shamt);
+    gen_set_gpr(a->rd, t);
+    tcg_temp_free(t);
+    return true;
+}
+
+static bool trans_addw(DisasContext *ctx, arg_addw *a)
+{
+    return gen_arith(ctx, a, &gen_addw);
+}
+
+static bool trans_subw(DisasContext *ctx, arg_subw *a)
+{
+    return gen_arith(ctx, a, &gen_subw);
+}
+
+static bool trans_sllw(DisasContext *ctx, arg_sllw *a)
+{
+    TCGv source1 = tcg_temp_new();
+    TCGv source2 = tcg_temp_new();
+
+    gen_get_gpr(source1, a->rs1);
+    gen_get_gpr(source2, a->rs2);
+
+    tcg_gen_andi_tl(source2, source2, 0x1F);
+    tcg_gen_shl_tl(source1, source1, source2);
+
+    tcg_gen_ext32s_tl(source1, source1);
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    tcg_temp_free(source2);
+    return true;
+}
+
+static bool trans_srlw(DisasContext *ctx, arg_srlw *a)
+{
+    TCGv source1 = tcg_temp_new();
+    TCGv source2 = tcg_temp_new();
+
+    gen_get_gpr(source1, a->rs1);
+    gen_get_gpr(source2, a->rs2);
+
+    /* clear upper 32 */
+    tcg_gen_ext32u_tl(source1, source1);
+    tcg_gen_andi_tl(source2, source2, 0x1F);
+    tcg_gen_shr_tl(source1, source1, source2);
+
+    tcg_gen_ext32s_tl(source1, source1);
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    tcg_temp_free(source2);
+    return true;
+}
+
+static bool trans_sraw(DisasContext *ctx, arg_sraw *a)
+{
+    TCGv source1 = tcg_temp_new();
+    TCGv source2 = tcg_temp_new();
+
+    gen_get_gpr(source1, a->rs1);
+    gen_get_gpr(source2, a->rs2);
+
+    /*
+     * first, trick to get it to act like working on 32 bits (get rid of
+     * upper 32, sign extend to fill space)
+     */
+    tcg_gen_ext32s_tl(source1, source1);
+    tcg_gen_andi_tl(source2, source2, 0x1F);
+    tcg_gen_sar_tl(source1, source1, source2);
+
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    tcg_temp_free(source2);
+
+    return true;
+}
+#endif
+
+static bool trans_fence(DisasContext *ctx, arg_fence *a)
+{
+    /* FENCE is a full memory barrier. */
+    tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);
+    return true;
+}
+
+static bool trans_fence_i(DisasContext *ctx, arg_fence_i *a)
+{
+    if (!ctx->ext_ifencei) {
+        return false;
+    }
+
+    /*
+     * FENCE_I is a no-op in QEMU,
+     * however we need to end the translation block
+     */
+    tcg_gen_movi_tl(cpu_pc, ctx->pc_succ_insn);
+    exit_tb(ctx);
+    ctx->base.is_jmp = DISAS_NORETURN;
+    return true;
+}
+
+#define RISCV_OP_CSR_PRE do {\
+    source1 = tcg_temp_new(); \
+    csr_store = tcg_temp_new(); \
+    dest = tcg_temp_new(); \
+    rs1_pass = tcg_temp_new(); \
+    gen_get_gpr(source1, a->rs1); \
+    tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next); \
+    tcg_gen_movi_tl(rs1_pass, a->rs1); \
+    tcg_gen_movi_tl(csr_store, a->csr); \
+    gen_io_start();\
+} while (0)
+
+#define RISCV_OP_CSR_POST do {\
+    gen_set_gpr(a->rd, dest); \
+    tcg_gen_movi_tl(cpu_pc, ctx->pc_succ_insn); \
+    exit_tb(ctx); \
+    ctx->base.is_jmp = DISAS_NORETURN; \
+    tcg_temp_free(source1); \
+    tcg_temp_free(csr_store); \
+    tcg_temp_free(dest); \
+    tcg_temp_free(rs1_pass); \
+} while (0)
+
+
+static bool trans_csrrw(DisasContext *ctx, arg_csrrw *a)
+{
+    TCGv source1, csr_store, dest, rs1_pass;
+    RISCV_OP_CSR_PRE;
+    gen_helper_csrrw(dest, cpu_env, source1, csr_store);
+    RISCV_OP_CSR_POST;
+    return true;
+}
+
+static bool trans_csrrs(DisasContext *ctx, arg_csrrs *a)
+{
+    TCGv source1, csr_store, dest, rs1_pass;
+    RISCV_OP_CSR_PRE;
+    gen_helper_csrrs(dest, cpu_env, source1, csr_store, rs1_pass);
+    RISCV_OP_CSR_POST;
+    return true;
+}
+
+static bool trans_csrrc(DisasContext *ctx, arg_csrrc *a)
+{
+    TCGv source1, csr_store, dest, rs1_pass;
+    RISCV_OP_CSR_PRE;
+    gen_helper_csrrc(dest, cpu_env, source1, csr_store, rs1_pass);
+    RISCV_OP_CSR_POST;
+    return true;
+}
+
+static bool trans_csrrwi(DisasContext *ctx, arg_csrrwi *a)
+{
+    TCGv source1, csr_store, dest, rs1_pass;
+    RISCV_OP_CSR_PRE;
+    gen_helper_csrrw(dest, cpu_env, rs1_pass, csr_store);
+    RISCV_OP_CSR_POST;
+    return true;
+}
+
+static bool trans_csrrsi(DisasContext *ctx, arg_csrrsi *a)
+{
+    TCGv source1, csr_store, dest, rs1_pass;
+    RISCV_OP_CSR_PRE;
+    gen_helper_csrrs(dest, cpu_env, rs1_pass, csr_store, rs1_pass);
+    RISCV_OP_CSR_POST;
+    return true;
+}
+
+static bool trans_csrrci(DisasContext *ctx, arg_csrrci *a)
+{
+    TCGv source1, csr_store, dest, rs1_pass;
+    RISCV_OP_CSR_PRE;
+    gen_helper_csrrc(dest, cpu_env, rs1_pass, csr_store, rs1_pass);
+    RISCV_OP_CSR_POST;
+    return true;
+}