From 39cf386458b4920ea14011af4cb5bb21c5e611fa Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Tue, 18 Aug 2020 08:13:35 -0700 Subject: target/microblaze: Convert dec_bit to decodetree Tested-by: Edgar E. Iglesias Reviewed-by: Edgar E. Iglesias Signed-off-by: Richard Henderson --- target/microblaze/translate.c | 148 +++++++++++++++++++++--------------------- 1 file changed, 75 insertions(+), 73 deletions(-) (limited to 'target/microblaze/translate.c') diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index 9763b9d77c..2d57f76548 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -241,6 +241,21 @@ static bool do_typea(DisasContext *dc, arg_typea *arg, bool side_effects, return true; } +static bool do_typea0(DisasContext *dc, arg_typea0 *arg, bool side_effects, + void (*fn)(TCGv_i32, TCGv_i32)) +{ + TCGv_i32 rd, ra; + + if (arg->rd == 0 && !side_effects) { + return true; + } + + rd = reg_for_write(dc, arg->rd); + ra = reg_for_read(dc, arg->ra); + fn(rd, ra); + return true; +} + static bool do_typeb_imm(DisasContext *dc, arg_typeb *arg, bool side_effects, void (*fni)(TCGv_i32, TCGv_i32, int32_t)) { @@ -283,6 +298,14 @@ static bool do_typeb_val(DisasContext *dc, arg_typeb *arg, bool side_effects, static bool trans_##NAME(DisasContext *dc, arg_typea *a) \ { return dc->cpu->cfg.CFG && do_typea(dc, a, SE, FN); } +#define DO_TYPEA0(NAME, SE, FN) \ + static bool trans_##NAME(DisasContext *dc, arg_typea0 *a) \ + { return do_typea0(dc, a, SE, FN); } + +#define DO_TYPEA0_CFG(NAME, CFG, SE, FN) \ + static bool trans_##NAME(DisasContext *dc, arg_typea0 *a) \ + { return dc->cpu->cfg.CFG && do_typea0(dc, a, SE, FN); } + #define DO_TYPEBI(NAME, SE, FNI) \ static bool trans_##NAME(DisasContext *dc, arg_typeb *a) \ { return do_typeb_imm(dc, a, SE, FNI); } @@ -345,6 +368,13 @@ DO_TYPEBI(andi, false, tcg_gen_andi_i32) DO_TYPEA(andn, false, tcg_gen_andc_i32) DO_TYPEBI(andni, false, gen_andni) +static void gen_clz(TCGv_i32 out, TCGv_i32 ina) +{ + tcg_gen_clzi_i32(out, ina, 32); +} + +DO_TYPEA0_CFG(clz, use_pcmp_instr, false, gen_clz) + static void gen_cmp(TCGv_i32 out, TCGv_i32 ina, TCGv_i32 inb) { TCGv_i32 lt = tcg_temp_new_i32(); @@ -474,6 +504,51 @@ DO_TYPEBV(rsubic, true, gen_rsubc) DO_TYPEBV(rsubik, false, gen_rsubk) DO_TYPEBV(rsubikc, true, gen_rsubkc) +DO_TYPEA0(sext8, false, tcg_gen_ext8s_i32) +DO_TYPEA0(sext16, false, tcg_gen_ext16s_i32) + +static void gen_sra(TCGv_i32 out, TCGv_i32 ina) +{ + tcg_gen_andi_i32(cpu_msr_c, ina, 1); + tcg_gen_sari_i32(out, ina, 1); +} + +static void gen_src(TCGv_i32 out, TCGv_i32 ina) +{ + TCGv_i32 tmp = tcg_temp_new_i32(); + + tcg_gen_mov_i32(tmp, cpu_msr_c); + tcg_gen_andi_i32(cpu_msr_c, ina, 1); + tcg_gen_extract2_i32(out, ina, tmp, 1); + + tcg_temp_free_i32(tmp); +} + +static void gen_srl(TCGv_i32 out, TCGv_i32 ina) +{ + tcg_gen_andi_i32(cpu_msr_c, ina, 1); + tcg_gen_shri_i32(out, ina, 1); +} + +DO_TYPEA0(sra, false, gen_sra) +DO_TYPEA0(src, false, gen_src) +DO_TYPEA0(srl, false, gen_srl) + +static void gen_swaph(TCGv_i32 out, TCGv_i32 ina) +{ + tcg_gen_rotri_i32(out, ina, 16); +} + +DO_TYPEA0(swapb, false, tcg_gen_bswap32_i32) +DO_TYPEA0(swaph, false, gen_swaph) + +static bool trans_wdic(DisasContext *dc, arg_wdic *a) +{ + /* Cache operations are nops: only check for supervisor mode. */ + trap_userspace(dc, true); + return true; +} + DO_TYPEA(xor, false, tcg_gen_xor_i32) DO_TYPEBI(xori, false, tcg_gen_xori_i32) @@ -754,78 +829,6 @@ static void dec_barrel(DisasContext *dc) } } -static void dec_bit(DisasContext *dc) -{ - CPUState *cs = CPU(dc->cpu); - TCGv_i32 t0; - unsigned int op; - - op = dc->ir & ((1 << 9) - 1); - switch (op) { - case 0x21: - /* src. */ - t0 = tcg_temp_new_i32(); - - tcg_gen_shli_i32(t0, cpu_msr_c, 31); - tcg_gen_andi_i32(cpu_msr_c, cpu_R[dc->ra], 1); - if (dc->rd) { - tcg_gen_shri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 1); - tcg_gen_or_i32(cpu_R[dc->rd], cpu_R[dc->rd], t0); - } - tcg_temp_free_i32(t0); - break; - - case 0x1: - case 0x41: - /* srl. */ - tcg_gen_andi_i32(cpu_msr_c, cpu_R[dc->ra], 1); - if (dc->rd) { - if (op == 0x41) - tcg_gen_shri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 1); - else - tcg_gen_sari_i32(cpu_R[dc->rd], cpu_R[dc->ra], 1); - } - break; - case 0x60: - tcg_gen_ext8s_i32(cpu_R[dc->rd], cpu_R[dc->ra]); - break; - case 0x61: - tcg_gen_ext16s_i32(cpu_R[dc->rd], cpu_R[dc->ra]); - break; - case 0x64: - case 0x66: - case 0x74: - case 0x76: - /* wdc. */ - trap_userspace(dc, true); - break; - case 0x68: - /* wic. */ - trap_userspace(dc, true); - break; - case 0xe0: - if (trap_illegal(dc, !dc->cpu->cfg.use_pcmp_instr)) { - return; - } - if (dc->cpu->cfg.use_pcmp_instr) { - tcg_gen_clzi_i32(cpu_R[dc->rd], cpu_R[dc->ra], 32); - } - break; - case 0x1e0: - /* swapb */ - tcg_gen_bswap32_i32(cpu_R[dc->rd], cpu_R[dc->ra]); - break; - case 0x1e2: - /*swaph */ - tcg_gen_rotri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 16); - break; - default: - cpu_abort(cs, "unknown bit oc=%x op=%x rd=%d ra=%d rb=%d\n", - (uint32_t)dc->base.pc_next, op, dc->rd, dc->ra, dc->rb); - break; - } -} - static inline void sync_jmpstate(DisasContext *dc) { if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) { @@ -1548,7 +1551,6 @@ static struct decoder_info { }; void (*dec)(DisasContext *dc); } decinfo[] = { - {DEC_BIT, dec_bit}, {DEC_BARREL, dec_barrel}, {DEC_LD, dec_load}, {DEC_ST, dec_store}, -- cgit v1.2.3