From 89c883091f257d5c2b46f9a5b6ea975b75f41301 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 23 Aug 2021 12:55:17 -0700 Subject: [PATCH] target/riscv: Use DisasExtend in shift operations These operations are greatly simplified by ctx->w, which allows us to fold gen_shiftw into gen_shift. Split gen_shifti into gen_shift_imm_{fn,tl} like we do for gen_arith_imm_{fn,tl}. Reviewed-by: Bin Meng Reviewed-by: Alistair Francis Signed-off-by: Richard Henderson Message-id: 20210823195529.560295-13-richard.henderson@linaro.org Signed-off-by: Alistair Francis --- target/riscv/insn_trans/trans_rvb.c.inc | 129 +++++++++++------------- target/riscv/insn_trans/trans_rvi.c.inc | 88 ++++------------ target/riscv/translate.c | 110 +++++++++----------- 3 files changed, 125 insertions(+), 202 deletions(-) diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc index e255678fff..b97c3ca5da 100644 --- a/target/riscv/insn_trans/trans_rvb.c.inc +++ b/target/riscv/insn_trans/trans_rvb.c.inc @@ -160,13 +160,13 @@ static void gen_bset(TCGv ret, TCGv arg1, TCGv shamt) static bool trans_bset(DisasContext *ctx, arg_bset *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_bset); + return gen_shift(ctx, a, EXT_NONE, gen_bset); } static bool trans_bseti(DisasContext *ctx, arg_bseti *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, gen_bset); + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_bset); } static void gen_bclr(TCGv ret, TCGv arg1, TCGv shamt) @@ -182,13 +182,13 @@ static void gen_bclr(TCGv ret, TCGv arg1, TCGv shamt) static bool trans_bclr(DisasContext *ctx, arg_bclr *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_bclr); + return gen_shift(ctx, a, EXT_NONE, gen_bclr); } static bool trans_bclri(DisasContext *ctx, arg_bclri *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, gen_bclr); + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_bclr); } static void gen_binv(TCGv ret, TCGv arg1, TCGv shamt) @@ -204,13 +204,13 @@ static void gen_binv(TCGv ret, TCGv arg1, TCGv shamt) static bool trans_binv(DisasContext *ctx, arg_binv *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_binv); + return gen_shift(ctx, a, EXT_NONE, gen_binv); } static bool trans_binvi(DisasContext *ctx, arg_binvi *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, gen_binv); + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_binv); } static void gen_bext(TCGv ret, TCGv arg1, TCGv shamt) @@ -222,13 +222,13 @@ static void gen_bext(TCGv ret, TCGv arg1, TCGv shamt) static bool trans_bext(DisasContext *ctx, arg_bext *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_bext); + return gen_shift(ctx, a, EXT_NONE, gen_bext); } static bool trans_bexti(DisasContext *ctx, arg_bexti *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, gen_bext); + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_bext); } static void gen_slo(TCGv ret, TCGv arg1, TCGv arg2) @@ -241,13 +241,13 @@ static void gen_slo(TCGv ret, TCGv arg1, TCGv arg2) static bool trans_slo(DisasContext *ctx, arg_slo *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_slo); + return gen_shift(ctx, a, EXT_NONE, gen_slo); } static bool trans_sloi(DisasContext *ctx, arg_sloi *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, gen_slo); + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_slo); } static void gen_sro(TCGv ret, TCGv arg1, TCGv arg2) @@ -260,82 +260,65 @@ static void gen_sro(TCGv ret, TCGv arg1, TCGv arg2) static bool trans_sro(DisasContext *ctx, arg_sro *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_sro); + return gen_shift(ctx, a, EXT_ZERO, gen_sro); } static bool trans_sroi(DisasContext *ctx, arg_sroi *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, gen_sro); + return gen_shift_imm_tl(ctx, a, EXT_ZERO, gen_sro); } static bool trans_ror(DisasContext *ctx, arg_ror *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, tcg_gen_rotr_tl); + return gen_shift(ctx, a, EXT_NONE, tcg_gen_rotr_tl); } static bool trans_rori(DisasContext *ctx, arg_rori *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, tcg_gen_rotr_tl); + return gen_shift_imm_fn(ctx, a, EXT_NONE, tcg_gen_rotri_tl); } static bool trans_rol(DisasContext *ctx, arg_rol *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, tcg_gen_rotl_tl); + return gen_shift(ctx, a, EXT_NONE, tcg_gen_rotl_tl); } static bool trans_grev(DisasContext *ctx, arg_grev *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_helper_grev); + return gen_shift(ctx, a, EXT_NONE, gen_helper_grev); } -static bool gen_grevi(DisasContext *ctx, arg_grevi *a) +static void gen_grevi(TCGv dest, TCGv src, target_long shamt) { - TCGv source1 = tcg_temp_new(); - TCGv source2; - - gen_get_gpr(ctx, source1, a->rs1); - - if (a->shamt == (TARGET_LONG_BITS - 8)) { + if (shamt == TARGET_LONG_BITS - 8) { /* rev8, byte swaps */ - tcg_gen_bswap_tl(source1, source1); + tcg_gen_bswap_tl(dest, src); } else { - source2 = tcg_temp_new(); - tcg_gen_movi_tl(source2, a->shamt); - gen_helper_grev(source1, source1, source2); - tcg_temp_free(source2); + gen_helper_grev(dest, src, tcg_constant_tl(shamt)); } - - gen_set_gpr(ctx, a->rd, source1); - tcg_temp_free(source1); - return true; } static bool trans_grevi(DisasContext *ctx, arg_grevi *a) { REQUIRE_EXT(ctx, RVB); - - if (a->shamt >= TARGET_LONG_BITS) { - return false; - } - - return gen_grevi(ctx, a); + return gen_shift_imm_fn(ctx, a, EXT_NONE, gen_grevi); } static bool trans_gorc(DisasContext *ctx, arg_gorc *a) { REQUIRE_EXT(ctx, RVB); - return gen_shift(ctx, a, gen_helper_gorc); + return gen_shift(ctx, a, EXT_ZERO, gen_helper_gorc); } static bool trans_gorci(DisasContext *ctx, arg_gorci *a) { REQUIRE_EXT(ctx, RVB); - return gen_shifti(ctx, a, gen_helper_gorc); + return gen_shift_imm_tl(ctx, a, EXT_ZERO, gen_helper_gorc); } #define GEN_SHADD(SHAMT) \ @@ -433,77 +416,88 @@ static bool trans_bsetw(DisasContext *ctx, arg_bsetw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_bset); + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, gen_bset); } static bool trans_bsetiw(DisasContext *ctx, arg_bsetiw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_bset); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_bset); } static bool trans_bclrw(DisasContext *ctx, arg_bclrw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_bclr); + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, gen_bclr); } static bool trans_bclriw(DisasContext *ctx, arg_bclriw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_bclr); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_bclr); } static bool trans_binvw(DisasContext *ctx, arg_binvw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_binv); + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, gen_binv); } static bool trans_binviw(DisasContext *ctx, arg_binviw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_binv); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_binv); } static bool trans_bextw(DisasContext *ctx, arg_bextw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_bext); + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, gen_bext); } static bool trans_slow(DisasContext *ctx, arg_slow *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_slo); + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, gen_slo); } static bool trans_sloiw(DisasContext *ctx, arg_sloiw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_slo); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_slo); } static bool trans_srow(DisasContext *ctx, arg_srow *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_sro); + ctx->w = true; + return gen_shift(ctx, a, EXT_ZERO, gen_sro); } static bool trans_sroiw(DisasContext *ctx, arg_sroiw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_sro); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_ZERO, gen_sro); } static void gen_rorw(TCGv ret, TCGv arg1, TCGv arg2) @@ -528,14 +522,16 @@ static bool trans_rorw(DisasContext *ctx, arg_rorw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_rorw); + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, gen_rorw); } static bool trans_roriw(DisasContext *ctx, arg_roriw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_rorw); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_NONE, gen_rorw); } static void gen_rolw(TCGv ret, TCGv arg1, TCGv arg2) @@ -560,47 +556,40 @@ static bool trans_rolw(DisasContext *ctx, arg_rolw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_rolw); -} - -static void gen_grevw(TCGv ret, TCGv arg1, TCGv arg2) -{ - tcg_gen_ext32u_tl(arg1, arg1); - gen_helper_grev(ret, arg1, arg2); + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, gen_rolw); } static bool trans_grevw(DisasContext *ctx, arg_grevw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_grevw); + ctx->w = true; + return gen_shift(ctx, a, EXT_ZERO, gen_helper_grev); } static bool trans_greviw(DisasContext *ctx, arg_greviw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_grevw); -} - -static void gen_gorcw(TCGv ret, TCGv arg1, TCGv arg2) -{ - tcg_gen_ext32u_tl(arg1, arg1); - gen_helper_gorcw(ret, arg1, arg2); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_ZERO, gen_helper_grev); } static bool trans_gorcw(DisasContext *ctx, arg_gorcw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftw(ctx, a, gen_gorcw); + ctx->w = true; + return gen_shift(ctx, a, EXT_ZERO, gen_helper_gorc); } static bool trans_gorciw(DisasContext *ctx, arg_gorciw *a) { REQUIRE_64BIT(ctx); REQUIRE_EXT(ctx, RVB); - return gen_shiftiw(ctx, a, gen_gorcw); + ctx->w = true; + return gen_shift_imm_tl(ctx, a, EXT_ZERO, gen_helper_gorc); } #define GEN_SHADD_UW(SHAMT) \ diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc index bd80476852..e4726e618c 100644 --- a/target/riscv/insn_trans/trans_rvi.c.inc +++ b/target/riscv/insn_trans/trans_rvi.c.inc @@ -270,17 +270,17 @@ static bool trans_andi(DisasContext *ctx, arg_andi *a) static bool trans_slli(DisasContext *ctx, arg_slli *a) { - return gen_shifti(ctx, a, tcg_gen_shl_tl); + return gen_shift_imm_fn(ctx, a, EXT_NONE, tcg_gen_shli_tl); } static bool trans_srli(DisasContext *ctx, arg_srli *a) { - return gen_shifti(ctx, a, tcg_gen_shr_tl); + return gen_shift_imm_fn(ctx, a, EXT_ZERO, tcg_gen_shri_tl); } static bool trans_srai(DisasContext *ctx, arg_srai *a) { - return gen_shifti(ctx, a, tcg_gen_sar_tl); + return gen_shift_imm_fn(ctx, a, EXT_SIGN, tcg_gen_sari_tl); } static bool trans_add(DisasContext *ctx, arg_add *a) @@ -295,7 +295,7 @@ static bool trans_sub(DisasContext *ctx, arg_sub *a) static bool trans_sll(DisasContext *ctx, arg_sll *a) { - return gen_shift(ctx, a, &tcg_gen_shl_tl); + return gen_shift(ctx, a, EXT_NONE, tcg_gen_shl_tl); } static bool trans_slt(DisasContext *ctx, arg_slt *a) @@ -315,12 +315,12 @@ static bool trans_xor(DisasContext *ctx, arg_xor *a) static bool trans_srl(DisasContext *ctx, arg_srl *a) { - return gen_shift(ctx, a, &tcg_gen_shr_tl); + return gen_shift(ctx, a, EXT_ZERO, tcg_gen_shr_tl); } static bool trans_sra(DisasContext *ctx, arg_sra *a) { - return gen_shift(ctx, a, &tcg_gen_sar_tl); + return gen_shift(ctx, a, EXT_SIGN, tcg_gen_sar_tl); } static bool trans_or(DisasContext *ctx, arg_or *a) @@ -343,31 +343,22 @@ static bool trans_addiw(DisasContext *ctx, arg_addiw *a) static bool trans_slliw(DisasContext *ctx, arg_slliw *a) { REQUIRE_64BIT(ctx); - return gen_shiftiw(ctx, a, tcg_gen_shl_tl); + ctx->w = true; + return gen_shift_imm_fn(ctx, a, EXT_NONE, tcg_gen_shli_tl); } static bool trans_srliw(DisasContext *ctx, arg_srliw *a) { REQUIRE_64BIT(ctx); - TCGv t = tcg_temp_new(); - gen_get_gpr(ctx, 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(ctx, a->rd, t); - tcg_temp_free(t); - return true; + ctx->w = true; + return gen_shift_imm_fn(ctx, a, EXT_ZERO, tcg_gen_shri_tl); } static bool trans_sraiw(DisasContext *ctx, arg_sraiw *a) { REQUIRE_64BIT(ctx); - TCGv t = tcg_temp_new(); - gen_get_gpr(ctx, t, a->rs1); - tcg_gen_sextract_tl(t, t, a->shamt, 32 - a->shamt); - gen_set_gpr(ctx, a->rd, t); - tcg_temp_free(t); - return true; + ctx->w = true; + return gen_shift_imm_fn(ctx, a, EXT_SIGN, tcg_gen_sari_tl); } static bool trans_addw(DisasContext *ctx, arg_addw *a) @@ -387,65 +378,22 @@ static bool trans_subw(DisasContext *ctx, arg_subw *a) static bool trans_sllw(DisasContext *ctx, arg_sllw *a) { REQUIRE_64BIT(ctx); - TCGv source1 = tcg_temp_new(); - TCGv source2 = tcg_temp_new(); - - gen_get_gpr(ctx, source1, a->rs1); - gen_get_gpr(ctx, 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(ctx, a->rd, source1); - tcg_temp_free(source1); - tcg_temp_free(source2); - return true; + ctx->w = true; + return gen_shift(ctx, a, EXT_NONE, tcg_gen_shl_tl); } static bool trans_srlw(DisasContext *ctx, arg_srlw *a) { REQUIRE_64BIT(ctx); - TCGv source1 = tcg_temp_new(); - TCGv source2 = tcg_temp_new(); - - gen_get_gpr(ctx, source1, a->rs1); - gen_get_gpr(ctx, 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(ctx, a->rd, source1); - tcg_temp_free(source1); - tcg_temp_free(source2); - return true; + ctx->w = true; + return gen_shift(ctx, a, EXT_ZERO, tcg_gen_shr_tl); } static bool trans_sraw(DisasContext *ctx, arg_sraw *a) { REQUIRE_64BIT(ctx); - TCGv source1 = tcg_temp_new(); - TCGv source2 = tcg_temp_new(); - - gen_get_gpr(ctx, source1, a->rs1); - gen_get_gpr(ctx, 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(ctx, a->rd, source1); - tcg_temp_free(source1); - tcg_temp_free(source2); - - return true; + ctx->w = true; + return gen_shift(ctx, a, EXT_SIGN, tcg_gen_sar_tl); } static bool trans_fence(DisasContext *ctx, arg_fence *a) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 785e9e58cc..e44254e878 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -99,6 +99,13 @@ static inline bool is_32bit(DisasContext *ctx) } #endif +/* The word size for this operation. */ +static inline int oper_len(DisasContext *ctx) +{ + return ctx->w ? 32 : TARGET_LONG_BITS; +} + + /* * RISC-V requires NaN-boxing of narrower width floating point values. * This applies when a 32-bit value is assigned to a 64-bit FP register. @@ -393,88 +400,58 @@ static bool gen_arith(DisasContext *ctx, arg_r *a, DisasExtend ext, return true; } -static bool gen_shift(DisasContext *ctx, arg_r *a, - void(*func)(TCGv, TCGv, TCGv)) +static bool gen_shift_imm_fn(DisasContext *ctx, arg_shift *a, DisasExtend ext, + void (*func)(TCGv, TCGv, target_long)) { - TCGv source1 = tcg_temp_new(); - TCGv source2 = tcg_temp_new(); + TCGv dest, src1; + int max_len = oper_len(ctx); - gen_get_gpr(ctx, source1, a->rs1); - gen_get_gpr(ctx, source2, a->rs2); - - tcg_gen_andi_tl(source2, source2, TARGET_LONG_BITS - 1); - (*func)(source1, source1, source2); - - gen_set_gpr(ctx, a->rd, source1); - tcg_temp_free(source1); - tcg_temp_free(source2); - return true; -} - -static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc) -{ - DisasContext *ctx = container_of(dcbase, DisasContext, base); - CPUState *cpu = ctx->cs; - CPURISCVState *env = cpu->env_ptr; - - return cpu_ldl_code(env, pc); -} - -static bool gen_shifti(DisasContext *ctx, arg_shift *a, - void(*func)(TCGv, TCGv, TCGv)) -{ - if (a->shamt >= TARGET_LONG_BITS) { + if (a->shamt >= max_len) { return false; } - TCGv source1 = tcg_temp_new(); - TCGv source2 = tcg_temp_new(); + dest = dest_gpr(ctx, a->rd); + src1 = get_gpr(ctx, a->rs1, ext); - gen_get_gpr(ctx, source1, a->rs1); + func(dest, src1, a->shamt); - tcg_gen_movi_tl(source2, a->shamt); - (*func)(source1, source1, source2); - - gen_set_gpr(ctx, a->rd, source1); - tcg_temp_free(source1); - tcg_temp_free(source2); + gen_set_gpr(ctx, a->rd, dest); return true; } -static bool gen_shiftw(DisasContext *ctx, arg_r *a, - void(*func)(TCGv, TCGv, TCGv)) +static bool gen_shift_imm_tl(DisasContext *ctx, arg_shift *a, DisasExtend ext, + void (*func)(TCGv, TCGv, TCGv)) { - TCGv source1 = tcg_temp_new(); - TCGv source2 = tcg_temp_new(); + TCGv dest, src1, src2; + int max_len = oper_len(ctx); - gen_get_gpr(ctx, source1, a->rs1); - gen_get_gpr(ctx, source2, a->rs2); + if (a->shamt >= max_len) { + return false; + } - tcg_gen_andi_tl(source2, source2, 31); - (*func)(source1, source1, source2); - tcg_gen_ext32s_tl(source1, source1); + dest = dest_gpr(ctx, a->rd); + src1 = get_gpr(ctx, a->rs1, ext); + src2 = tcg_constant_tl(a->shamt); - gen_set_gpr(ctx, a->rd, source1); - tcg_temp_free(source1); - tcg_temp_free(source2); + func(dest, src1, src2); + + gen_set_gpr(ctx, a->rd, dest); return true; } -static bool gen_shiftiw(DisasContext *ctx, arg_shift *a, - void(*func)(TCGv, TCGv, TCGv)) +static bool gen_shift(DisasContext *ctx, arg_r *a, DisasExtend ext, + void (*func)(TCGv, TCGv, TCGv)) { - TCGv source1 = tcg_temp_new(); - TCGv source2 = tcg_temp_new(); + TCGv dest = dest_gpr(ctx, a->rd); + TCGv src1 = get_gpr(ctx, a->rs1, ext); + TCGv src2 = get_gpr(ctx, a->rs2, EXT_NONE); + TCGv ext2 = tcg_temp_new(); - gen_get_gpr(ctx, source1, a->rs1); - tcg_gen_movi_tl(source2, a->shamt); + tcg_gen_andi_tl(ext2, src2, oper_len(ctx) - 1); + func(dest, src1, ext2); - (*func)(source1, source1, source2); - tcg_gen_ext32s_tl(source1, source1); - - gen_set_gpr(ctx, a->rd, source1); - tcg_temp_free(source1); - tcg_temp_free(source2); + gen_set_gpr(ctx, a->rd, dest); + tcg_temp_free(ext2); return true; } @@ -490,6 +467,15 @@ static bool gen_unary(DisasContext *ctx, arg_r2 *a, DisasExtend ext, return true; } +static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc) +{ + DisasContext *ctx = container_of(dcbase, DisasContext, base); + CPUState *cpu = ctx->cs; + CPURISCVState *env = cpu->env_ptr; + + return cpu_ldl_code(env, pc); +} + /* Include insn module translation function */ #include "insn_trans/trans_rvi.c.inc" #include "insn_trans/trans_rvm.c.inc"