With decodetree we don't need to convert RISC-V opcodes into to MemOps as gen_load() did.
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 | 44 +++++++++++++++++-------- target/riscv/translate.c | 20 ----------- 2 files changed, 30 insertions(+), 34 deletions(-) diff --git a/target/riscv/insn_trans/trans_rvi.inc.c b/target/riscv/insn_trans/trans_rvi.inc.c index 6097b82df4..873a5e8b53 100644 --- a/target/riscv/insn_trans/trans_rvi.inc.c +++ b/target/riscv/insn_trans/trans_rvi.inc.c @@ -131,46 +131,62 @@ static bool trans_bgeu(DisasContext *ctx, arg_bgeu *a, uint32_t insn) return trans_branch(ctx, a, TCG_COND_GEU); } -static bool trans_lb(DisasContext *ctx, arg_lb *a, uint32_t insn) +static bool trans_load(DisasContext *ctx, arg_lb *a, int memop) { - gen_load(ctx, OPC_RISC_LB, a->rd, a->rs1, a->imm); + TCGv t0 = tcg_temp_new(); + TCGv t1 = tcg_temp_new(); + gen_get_gpr(t0, a->rs1); + tcg_gen_addi_tl(t0, t0, a->imm); + + if (memop < 0) { + return false; + } + + 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, uint32_t insn) +{ + return trans_load(ctx, a, MO_SB); +} + static bool trans_lh(DisasContext *ctx, arg_lh *a, uint32_t insn) { - gen_load(ctx, OPC_RISC_LH, a->rd, a->rs1, a->imm); - return true; + return trans_load(ctx, a, MO_TESW); } + static bool trans_lw(DisasContext *ctx, arg_lw *a, uint32_t insn) { - gen_load(ctx, OPC_RISC_LW, a->rd, a->rs1, a->imm); - return true; + return trans_load(ctx, a, MO_TESL); } + static bool trans_lbu(DisasContext *ctx, arg_lbu *a, uint32_t insn) { - gen_load(ctx, OPC_RISC_LBU, a->rd, a->rs1, a->imm); - return true; + return trans_load(ctx, a, MO_UB); } + static bool trans_lhu(DisasContext *ctx, arg_lhu *a, uint32_t insn) { - gen_load(ctx, OPC_RISC_LHU, a->rd, a->rs1, a->imm); - return true; + return trans_load(ctx, a, MO_TEUW); } static bool trans_lwu(DisasContext *ctx, arg_lwu *a, uint32_t insn) { #ifdef TARGET_RISCV64 - gen_load(ctx, OPC_RISC_LWU, a->rd, a->rs1, a->imm); - return true; + return trans_load(ctx, a, MO_TEUL); #else return false; #endif } + static bool trans_ld(DisasContext *ctx, arg_ld *a, uint32_t insn) { #ifdef TARGET_RISCV64 - gen_load(ctx, OPC_RISC_LD, a->rd, a->rs1, a->imm); - return true; + return trans_load(ctx, a, MO_TEQ); #else return false; #endif diff --git a/target/riscv/translate.c b/target/riscv/translate.c index b8a9b1c64b..544e71a46c 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -488,26 +488,6 @@ static void gen_jal(CPURISCVState *env, DisasContext *ctx, int rd, ctx->base.is_jmp = DISAS_NORETURN; } -static void gen_load(DisasContext *ctx, uint32_t opc, int rd, int rs1, - target_long imm) -{ - TCGv t0 = tcg_temp_new(); - TCGv t1 = tcg_temp_new(); - gen_get_gpr(t0, rs1); - tcg_gen_addi_tl(t0, t0, imm); - int memop = tcg_memop_lookup[(opc >> 12) & 0x7]; - - if (memop < 0) { - gen_exception_illegal(ctx); - return; - } - - tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, memop); - gen_set_gpr(rd, t1); - tcg_temp_free(t0); - tcg_temp_free(t1); -} - static void gen_store(DisasContext *ctx, uint32_t opc, int rs1, int rs2, target_long imm) { -- 2.19.1