manual decoding in gen_arith() is not necessary with decodetree. Signed-off-by: Bastian Koppelmann <kbast...@mail.uni-paderborn.de> Signed-off-by: Peer Adelt <peer.ad...@hni.uni-paderborn.de> --- target/riscv/insn32.decode | 3 ++- target/riscv/insn_trans/trans_rvi.inc.c | 21 ++++++---------- target/riscv/translate.c | 33 ++++++++++++++----------- 3 files changed, 27 insertions(+), 30 deletions(-)
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 806315b830..549cacfdd5 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -40,6 +40,7 @@ # Argument sets: &branch imm rs2 rs1 &arith_imm imm rs1 rd +&arith rd rs1 rs2 &shift shamt rs1 rd &atomic aq rl rs2 rs1 rd @@ -48,7 +49,7 @@ @sfence_vma ....... ..... ..... ... ..... ....... %rs2 %rs1 @sfence_vm ....... ..... ..... ... ..... ....... %rs1 -@r ....... ..... ..... ... ..... ....... %rs2 %rs1 %rd +@r ....... ..... ..... ... ..... ....... &arith %rs2 %rs1 %rd @i ............ ..... ... ..... ....... &arith_imm imm=%imm_i %rs1 %rd @b ....... ..... ..... ... ..... ....... &branch imm=%imm_b %rs2 %rs1 @s ....... ..... ..... ... ..... ....... imm=%imm_s %rs2 %rs1 diff --git a/target/riscv/insn_trans/trans_rvi.inc.c b/target/riscv/insn_trans/trans_rvi.inc.c index 76d4baab69..cb0c6263bd 100644 --- a/target/riscv/insn_trans/trans_rvi.inc.c +++ b/target/riscv/insn_trans/trans_rvi.inc.c @@ -323,14 +323,12 @@ static bool trans_srai(DisasContext *ctx, arg_srai *a, uint32_t insn) static bool trans_add(DisasContext *ctx, arg_add *a, uint32_t insn) { - gen_arith(ctx, OPC_RISC_ADD, a->rd, a->rs1, a->rs2); - return true; + return trans_arith(ctx, a, &tcg_gen_add_tl); } static bool trans_sub(DisasContext *ctx, arg_sub *a, uint32_t insn) { - gen_arith(ctx, OPC_RISC_SUB, a->rd, a->rs1, a->rs2); - return true; + return trans_arith(ctx, a, &tcg_gen_sub_tl); } static bool trans_sll(DisasContext *ctx, arg_sll *a, uint32_t insn) @@ -353,8 +351,7 @@ static bool trans_sltu(DisasContext *ctx, arg_sltu *a, uint32_t insn) static bool trans_xor(DisasContext *ctx, arg_xor *a, uint32_t insn) { - gen_arith(ctx, OPC_RISC_XOR, a->rd, a->rs1, a->rs2); - return true; + return trans_arith(ctx, a, &tcg_gen_xor_tl); } static bool trans_srl(DisasContext *ctx, arg_srl *a, uint32_t insn) @@ -371,14 +368,12 @@ static bool trans_sra(DisasContext *ctx, arg_sra *a, uint32_t insn) static bool trans_or(DisasContext *ctx, arg_or *a, uint32_t insn) { - gen_arith(ctx, OPC_RISC_OR, a->rd, a->rs1, a->rs2); - return true; + return trans_arith(ctx, a, &tcg_gen_or_tl); } static bool trans_and(DisasContext *ctx, arg_and *a, uint32_t insn) { - gen_arith(ctx, OPC_RISC_AND, a->rd, a->rs1, a->rs2); - return true; + return trans_arith(ctx, a, &tcg_gen_and_tl); } static bool trans_addiw(DisasContext *ctx, arg_addiw *a, uint32_t insn) @@ -436,8 +431,7 @@ static bool trans_addw(DisasContext *ctx, arg_addw *a, uint32_t insn) gen_exception_illegal(ctx); return true; #endif - gen_arith(ctx, OPC_RISC_ADDW, a->rd, a->rs1, a->rs2); - return true; + return trans_arith(ctx, a, &tcg_gen_add_tl); } static bool trans_subw(DisasContext *ctx, arg_subw *a, uint32_t insn) @@ -446,8 +440,7 @@ static bool trans_subw(DisasContext *ctx, arg_subw *a, uint32_t insn) gen_exception_illegal(ctx); return true; #endif - gen_arith(ctx, OPC_RISC_SUBW, a->rd, a->rs1, a->rs2); - return true; + return trans_arith(ctx, a, &tcg_gen_sub_tl); } static bool trans_sllw(DisasContext *ctx, arg_sllw *a, uint32_t insn) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index ed1d93af47..92aa4641b0 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -175,12 +175,6 @@ static void gen_arith(DisasContext *ctx, uint32_t opc, int rd, int rs1, gen_get_gpr(source2, rs2); switch (opc) { - CASE_OP_32_64(OPC_RISC_ADD): - tcg_gen_add_tl(source1, source1, source2); - break; - CASE_OP_32_64(OPC_RISC_SUB): - tcg_gen_sub_tl(source1, source1, source2); - break; #if defined(TARGET_RISCV64) case OPC_RISC_SLLW: tcg_gen_andi_tl(source2, source2, 0x1F); @@ -197,9 +191,6 @@ static void gen_arith(DisasContext *ctx, uint32_t opc, int rd, int rs1, case OPC_RISC_SLTU: tcg_gen_setcond_tl(TCG_COND_LTU, source1, source1, source2); break; - case OPC_RISC_XOR: - tcg_gen_xor_tl(source1, source1, source2); - break; #if defined(TARGET_RISCV64) case OPC_RISC_SRLW: /* clear upper 32 */ @@ -225,12 +216,6 @@ static void gen_arith(DisasContext *ctx, uint32_t opc, int rd, int rs1, tcg_gen_andi_tl(source2, source2, TARGET_LONG_BITS - 1); tcg_gen_sar_tl(source1, source1, source2); break; - case OPC_RISC_OR: - tcg_gen_or_tl(source1, source1, source2); - break; - case OPC_RISC_AND: - tcg_gen_and_tl(source1, source1, source2); - break; CASE_OP_32_64(OPC_RISC_MUL): tcg_gen_mul_tl(source1, source1, source2); break; @@ -473,6 +458,24 @@ static bool trans_arith_imm(DisasContext *ctx, arg_arith_imm *a, return true; } +static bool trans_arith(DisasContext *ctx, arg_arith *a, + void(*func)(TCGv, TCGv, TCGv)) +{ + TCGv source1, source2; + source1 = tcg_temp_new(); + source2 = tcg_temp_new(); + + gen_get_gpr(source1, a->rs1); + gen_get_gpr(source2, a->rs2); + + (*func)(source1, source1, source2); + + gen_set_gpr(a->rd, source1); + tcg_temp_free(source1); + tcg_temp_free(source2); + return true; +} + /* Include insn module translation function */ #include "insn_trans/trans_rvi.inc.c" #include "insn_trans/trans_rvm.inc.c" -- 2.19.1