From: Bastian Koppelmann <kbast...@mail.uni-paderborn.de> With decodetree we don't need to convert RISC-V opcodes into to MemOps as the old gen_store() did.
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> Signed-off-by: Bastian Koppelmann <kbast...@mail.uni-paderborn.de> Signed-off-by: Peer Adelt <peer.ad...@hni.uni-paderborn.de> --- target/riscv/insn_trans/trans_rvi.inc.c | 27 +++++++++++++++++-------- target/riscv/translate.c | 8 +++++--- 2 files changed, 24 insertions(+), 11 deletions(-) diff --git a/target/riscv/insn_trans/trans_rvi.inc.c b/target/riscv/insn_trans/trans_rvi.inc.c index cc361ed4d151..5a09c6335ae0 100644 --- a/target/riscv/insn_trans/trans_rvi.inc.c +++ b/target/riscv/insn_trans/trans_rvi.inc.c @@ -168,22 +168,34 @@ static bool trans_lhu(DisasContext *ctx, arg_lhu *a) return gen_load(ctx, a, MO_TEUW); } -static bool trans_sb(DisasContext *ctx, arg_sb *a) +static bool gen_store(DisasContext *ctx, arg_sb *a, TCGMemOp memop) { - gen_store(ctx, OPC_RISC_SB, a->rs1, a->rs2, a->imm); + 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) { - gen_store(ctx, OPC_RISC_SH, a->rs1, a->rs2, a->imm); - return true; + return gen_store(ctx, a, MO_TESW); } static bool trans_sw(DisasContext *ctx, arg_sw *a) { - gen_store(ctx, OPC_RISC_SW, a->rs1, a->rs2, a->imm); - return true; + return gen_store(ctx, a, MO_TESL); } #ifdef TARGET_RISCV64 @@ -199,8 +211,7 @@ static bool trans_ld(DisasContext *ctx, arg_ld *a) static bool trans_sd(DisasContext *ctx, arg_sd *a) { - gen_store(ctx, OPC_RISC_SD, a->rs1, a->rs2, a->imm); - return true; + return gen_store(ctx, a, MO_TEQ); } #endif diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 99d6d3b4ae91..cdc08b1bff20 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -56,6 +56,7 @@ typedef struct DisasContext { int frm; } DisasContext; +#ifdef TARGET_RISCV64 /* convert riscv funct3 to qemu memop for load/store */ static const int tcg_memop_lookup[8] = { [0 ... 7] = -1, @@ -69,6 +70,7 @@ static const int tcg_memop_lookup[8] = { [6] = MO_TEUL, #endif }; +#endif #ifdef TARGET_RISCV64 #define CASE_OP_32_64(X) case X: case glue(X, W) @@ -551,9 +553,8 @@ static void gen_load_c(DisasContext *ctx, uint32_t opc, int rd, int rs1, tcg_temp_free(t0); tcg_temp_free(t1); } -#endif -static void gen_store(DisasContext *ctx, uint32_t opc, int rs1, int rs2, +static void gen_store_c(DisasContext *ctx, uint32_t opc, int rs1, int rs2, target_long imm) { TCGv t0 = tcg_temp_new(); @@ -572,6 +573,7 @@ static void gen_store(DisasContext *ctx, uint32_t opc, int rs1, int rs2, tcg_temp_free(t0); tcg_temp_free(dat); } +#endif #ifndef CONFIG_USER_ONLY /* The states of mstatus_fs are: @@ -736,7 +738,7 @@ static void decode_RV32_64C0(DisasContext *ctx) case 7: #if defined(TARGET_RISCV64) /* C.SD (RV64/128) -> sd rs2', offset[7:3](rs1')*/ - gen_store(ctx, OPC_RISC_SD, rs1s, rd_rs2, + gen_store_c(ctx, OPC_RISC_SD, rs1s, rd_rs2, GET_C_LD_IMM(ctx->opcode)); #else /* C.FSW (RV32) -> fsw rs2', offset[6:2](rs1')*/ -- 2.19.2