| Message ID | 20180621015359.12018-2-richard.henderson@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | target/arm SVE patches | expand |
On 21 June 2018 at 02:53, Richard Henderson <richard.henderson@linaro.org> wrote: > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/arm/helper-sve.h | 35 +++++++++ > target/arm/sve_helper.c | 153 +++++++++++++++++++++++++++++++++++++ > target/arm/translate-sve.c | 121 +++++++++++++++++++++++++++++ > target/arm/sve.decode | 34 +++++++++ > 4 files changed, 343 insertions(+) Reviewed-by: Peter Maydell <peter.maydell@linaro.org> thanks -- PMM
Richard Henderson <richard.henderson@linaro.org> writes: > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/arm/helper-sve.h | 35 +++++++++ > target/arm/sve_helper.c | 153 +++++++++++++++++++++++++++++++++++++ > target/arm/translate-sve.c | 121 +++++++++++++++++++++++++++++ > target/arm/sve.decode | 34 +++++++++ > 4 files changed, 343 insertions(+) > > diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h > index 2e76084992..fcc9ba5f50 100644 > --- a/target/arm/helper-sve.h > +++ b/target/arm/helper-sve.h > @@ -719,3 +719,38 @@ DEF_HELPER_FLAGS_5(gvec_rsqrts_s, TCG_CALL_NO_RWG, > void, ptr, ptr, ptr, ptr, i32) > DEF_HELPER_FLAGS_5(gvec_rsqrts_d, TCG_CALL_NO_RWG, > void, ptr, ptr, ptr, ptr, i32) > + > +DEF_HELPER_FLAGS_4(sve_ld1bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld2bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld3bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld4bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > + > +DEF_HELPER_FLAGS_4(sve_ld1hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld2hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld3hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld4hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > + > +DEF_HELPER_FLAGS_4(sve_ld1ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld2ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld3ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld4ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > + > +DEF_HELPER_FLAGS_4(sve_ld1dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld2dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld3dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld4dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > + > +DEF_HELPER_FLAGS_4(sve_ld1bhu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1bsu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1bdu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1bhs_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1bss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1bds_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > + > +DEF_HELPER_FLAGS_4(sve_ld1hsu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1hdu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1hss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1hds_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > + > +DEF_HELPER_FLAGS_4(sve_ld1sdu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > +DEF_HELPER_FLAGS_4(sve_ld1sds_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) > diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c > index 128bbf9b04..4e6ad282f9 100644 > --- a/target/arm/sve_helper.c > +++ b/target/arm/sve_helper.c > @@ -2810,3 +2810,156 @@ uint32_t HELPER(sve_while)(void *vd, uint32_t count, uint32_t pred_desc) > > return predtest_ones(d, oprsz, esz_mask); > } > + > +/* > + * Load contiguous data, protected by a governing predicate. > + */ > +#define DO_LD1(NAME, FN, TYPEE, TYPEM, H) \ > +static void do_##NAME(CPUARMState *env, void *vd, void *vg, \ > + target_ulong addr, intptr_t oprsz, \ > + uintptr_t ra) \ > +{ \ > + intptr_t i = 0; \ > + do { \ > + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ > + do { \ > + TYPEM m = 0; \ > + if (pg & 1) { \ > + m = FN(env, addr, ra); \ > + } \ > + *(TYPEE *)(vd + H(i)) = m; \ > + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ > + addr += sizeof(TYPEM); \ > + } while (i & 15); \ > + } while (i < oprsz); \ > +} \ > +void HELPER(NAME)(CPUARMState *env, void *vg, \ > + target_ulong addr, uint32_t desc) \ > +{ \ > + do_##NAME(env, &env->vfp.zregs[simd_data(desc)], vg, \ > + addr, simd_oprsz(desc), GETPC()); \ > +} > + > +#define DO_LD2(NAME, FN, TYPEE, TYPEM, H) \ > +void HELPER(NAME)(CPUARMState *env, void *vg, \ > + target_ulong addr, uint32_t desc) \ > +{ \ > + intptr_t i, oprsz = simd_oprsz(desc); \ > + intptr_t ra = GETPC(); \ > + unsigned rd = simd_data(desc); \ > + void *d1 = &env->vfp.zregs[rd]; \ > + void *d2 = &env->vfp.zregs[(rd + 1) & 31]; \ > + for (i = 0; i < oprsz; ) { \ > + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ > + do { \ > + TYPEM m1 = 0, m2 = 0; \ > + if (pg & 1) { \ > + m1 = FN(env, addr, ra); \ > + m2 = FN(env, addr + sizeof(TYPEM), ra); \ > + } \ > + *(TYPEE *)(d1 + H(i)) = m1; \ > + *(TYPEE *)(d2 + H(i)) = m2; \ > + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ > + addr += 2 * sizeof(TYPEM); \ > + } while (i & 15); \ > + } \ > +} > + > +#define DO_LD3(NAME, FN, TYPEE, TYPEM, H) \ > +void HELPER(NAME)(CPUARMState *env, void *vg, \ > + target_ulong addr, uint32_t desc) \ > +{ \ > + intptr_t i, oprsz = simd_oprsz(desc); \ > + intptr_t ra = GETPC(); \ > + unsigned rd = simd_data(desc); \ > + void *d1 = &env->vfp.zregs[rd]; \ > + void *d2 = &env->vfp.zregs[(rd + 1) & 31]; \ > + void *d3 = &env->vfp.zregs[(rd + 2) & 31]; \ > + for (i = 0; i < oprsz; ) { \ > + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ > + do { \ > + TYPEM m1 = 0, m2 = 0, m3 = 0; \ > + if (pg & 1) { \ > + m1 = FN(env, addr, ra); \ > + m2 = FN(env, addr + sizeof(TYPEM), ra); \ > + m3 = FN(env, addr + 2 * sizeof(TYPEM), ra); \ > + } \ > + *(TYPEE *)(d1 + H(i)) = m1; \ > + *(TYPEE *)(d2 + H(i)) = m2; \ > + *(TYPEE *)(d3 + H(i)) = m3; \ > + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ > + addr += 3 * sizeof(TYPEM); \ > + } while (i & 15); \ > + } \ > +} > + > +#define DO_LD4(NAME, FN, TYPEE, TYPEM, H) \ > +void HELPER(NAME)(CPUARMState *env, void *vg, \ > + target_ulong addr, uint32_t desc) \ > +{ \ > + intptr_t i, oprsz = simd_oprsz(desc); \ > + intptr_t ra = GETPC(); \ > + unsigned rd = simd_data(desc); \ > + void *d1 = &env->vfp.zregs[rd]; \ > + void *d2 = &env->vfp.zregs[(rd + 1) & 31]; \ > + void *d3 = &env->vfp.zregs[(rd + 2) & 31]; \ > + void *d4 = &env->vfp.zregs[(rd + 3) & 31]; \ > + for (i = 0; i < oprsz; ) { \ > + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ > + do { \ > + TYPEM m1 = 0, m2 = 0, m3 = 0, m4 = 0; \ > + if (pg & 1) { \ > + m1 = FN(env, addr, ra); \ > + m2 = FN(env, addr + sizeof(TYPEM), ra); \ > + m3 = FN(env, addr + 2 * sizeof(TYPEM), ra); \ > + m4 = FN(env, addr + 3 * sizeof(TYPEM), ra); \ > + } \ > + *(TYPEE *)(d1 + H(i)) = m1; \ > + *(TYPEE *)(d2 + H(i)) = m2; \ > + *(TYPEE *)(d3 + H(i)) = m3; \ > + *(TYPEE *)(d4 + H(i)) = m4; \ > + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ > + addr += 4 * sizeof(TYPEM); \ > + } while (i & 15); \ > + } \ > +} > + > +DO_LD1(sve_ld1bhu_r, cpu_ldub_data_ra, uint16_t, uint8_t, H1_2) > +DO_LD1(sve_ld1bhs_r, cpu_ldsb_data_ra, uint16_t, int8_t, H1_2) > +DO_LD1(sve_ld1bsu_r, cpu_ldub_data_ra, uint32_t, uint8_t, H1_4) > +DO_LD1(sve_ld1bss_r, cpu_ldsb_data_ra, uint32_t, int8_t, H1_4) > +DO_LD1(sve_ld1bdu_r, cpu_ldub_data_ra, uint64_t, uint8_t, ) > +DO_LD1(sve_ld1bds_r, cpu_ldsb_data_ra, uint64_t, int8_t, ) > + > +DO_LD1(sve_ld1hsu_r, cpu_lduw_data_ra, uint32_t, uint16_t, H1_4) > +DO_LD1(sve_ld1hss_r, cpu_ldsw_data_ra, uint32_t, int8_t, H1_4) > +DO_LD1(sve_ld1hdu_r, cpu_lduw_data_ra, uint64_t, uint16_t, ) > +DO_LD1(sve_ld1hds_r, cpu_ldsw_data_ra, uint64_t, int16_t, ) > + > +DO_LD1(sve_ld1sdu_r, cpu_ldl_data_ra, uint64_t, uint32_t, ) > +DO_LD1(sve_ld1sds_r, cpu_ldl_data_ra, uint64_t, int32_t, ) > + > +DO_LD1(sve_ld1bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) > +DO_LD2(sve_ld2bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) > +DO_LD3(sve_ld3bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) > +DO_LD4(sve_ld4bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) > + > +DO_LD1(sve_ld1hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) > +DO_LD2(sve_ld2hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) > +DO_LD3(sve_ld3hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) > +DO_LD4(sve_ld4hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) > + > +DO_LD1(sve_ld1ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) > +DO_LD2(sve_ld2ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) > +DO_LD3(sve_ld3ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) > +DO_LD4(sve_ld4ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) > + > +DO_LD1(sve_ld1dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) > +DO_LD2(sve_ld2dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) > +DO_LD3(sve_ld3dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) > +DO_LD4(sve_ld4dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) > + > +#undef DO_LD1 > +#undef DO_LD2 > +#undef DO_LD3 > +#undef DO_LD4 > diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c > index 226c97579c..3543daff48 100644 > --- a/target/arm/translate-sve.c > +++ b/target/arm/translate-sve.c > @@ -42,6 +42,8 @@ typedef void gen_helper_gvec_flags_3(TCGv_i32, TCGv_ptr, TCGv_ptr, > typedef void gen_helper_gvec_flags_4(TCGv_i32, TCGv_ptr, TCGv_ptr, > TCGv_ptr, TCGv_ptr, TCGv_i32); > > +typedef void gen_helper_gvec_mem(TCGv_env, TCGv_ptr, TCGv_i64, TCGv_i32); > + > /* > * Helpers for extracting complex instruction fields. > */ > @@ -82,6 +84,15 @@ static inline int expand_imm_sh8u(int x) > return (uint8_t)x << (x & 0x100 ? 8 : 0); > } > > +/* Convert a 2-bit memory size (msz) to a 4-bit data type (dtype) > + * with unsigned data. C.f. SVE Memory Contiguous Load Group. > + */ > +static inline int msz_dtype(int msz) > +{ > + static const uint8_t dtype[4] = { 0, 5, 10, 15 }; > + return dtype[msz]; > +} I'm a little confused by the magic numbers in dtype[4], do they map directly to dtype_mop[]? > + > /* > * Include the generated decoder. > */ > @@ -3526,3 +3537,113 @@ static bool trans_LDR_pri(DisasContext *s, arg_rri *a, uint32_t insn) > } > return true; > } > + > +/* > + *** SVE Memory - Contiguous Load Group > + */ > + > +/* The memory mode of the dtype. */ > +static const TCGMemOp dtype_mop[16] = { > + MO_UB, MO_UB, MO_UB, MO_UB, > + MO_SL, MO_UW, MO_UW, MO_UW, > + MO_SW, MO_SW, MO_UL, MO_UL, > + MO_SB, MO_SB, MO_SB, MO_Q > +}; > + > +#define dtype_msz(x) (dtype_mop[x] & MO_SIZE) > + > +/* The vector element size of dtype. */ > +static const uint8_t dtype_esz[16] = { > + 0, 1, 2, 3, > + 3, 1, 2, 3, > + 3, 2, 2, 3, > + 3, 2, 1, 3 > +}; > + > +static void do_mem_zpa(DisasContext *s, int zt, int pg, TCGv_i64 addr, > + gen_helper_gvec_mem *fn) > +{ > + unsigned vsz = vec_full_reg_size(s); > + TCGv_ptr t_pg; > + TCGv_i32 desc; > + > + /* For e.g. LD4, there are not enough arguments to pass all 4 > + * registers as pointers, so encode the regno into the data field. > + * For consistency, do this even for LD1. > + */ > + desc = tcg_const_i32(simd_desc(vsz, vsz, zt)); > + t_pg = tcg_temp_new_ptr(); > + > + tcg_gen_addi_ptr(t_pg, cpu_env, pred_full_reg_offset(s, pg)); > + fn(cpu_env, t_pg, addr, desc); > + > + tcg_temp_free_ptr(t_pg); > + tcg_temp_free_i32(desc); > +} > + > +static void do_ld_zpa(DisasContext *s, int zt, int pg, > + TCGv_i64 addr, int dtype, int nreg) > +{ > + static gen_helper_gvec_mem * const fns[16][4] = { > + { gen_helper_sve_ld1bb_r, gen_helper_sve_ld2bb_r, > + gen_helper_sve_ld3bb_r, gen_helper_sve_ld4bb_r }, > + { gen_helper_sve_ld1bhu_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1bsu_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1bdu_r, NULL, NULL, NULL }, > + > + { gen_helper_sve_ld1sds_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1hh_r, gen_helper_sve_ld2hh_r, > + gen_helper_sve_ld3hh_r, gen_helper_sve_ld4hh_r }, > + { gen_helper_sve_ld1hsu_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1hdu_r, NULL, NULL, NULL }, > + > + { gen_helper_sve_ld1hds_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1hss_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1ss_r, gen_helper_sve_ld2ss_r, > + gen_helper_sve_ld3ss_r, gen_helper_sve_ld4ss_r }, > + { gen_helper_sve_ld1sdu_r, NULL, NULL, NULL }, > + > + { gen_helper_sve_ld1bds_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1bss_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1bhs_r, NULL, NULL, NULL }, > + { gen_helper_sve_ld1dd_r, gen_helper_sve_ld2dd_r, > + gen_helper_sve_ld3dd_r, gen_helper_sve_ld4dd_r }, > + }; > + gen_helper_gvec_mem *fn = fns[dtype][nreg]; > + > + /* While there are holes in the table, they are not > + * accessible via the instruction encoding. > + */ > + assert(fn != NULL); > + do_mem_zpa(s, zt, pg, addr, fn); > +} > + > +static bool trans_LD_zprr(DisasContext *s, arg_rprr_load *a, uint32_t insn) > +{ > + if (a->rm == 31) { > + return false; > + } > + if (sve_access_check(s)) { > + TCGv_i64 addr = new_tmp_a64(s); > + tcg_gen_muli_i64(addr, cpu_reg(s, a->rm), > + (a->nreg + 1) << dtype_msz(a->dtype)); > + tcg_gen_add_i64(addr, addr, cpu_reg_sp(s, a->rn)); > + do_ld_zpa(s, a->rd, a->pg, addr, a->dtype, a->nreg); > + } > + return true; > +} > + > +static bool trans_LD_zpri(DisasContext *s, arg_rpri_load *a, uint32_t insn) > +{ > + if (sve_access_check(s)) { > + int vsz = vec_full_reg_size(s); > + int elements = vsz >> dtype_esz[a->dtype]; > + TCGv_i64 addr = new_tmp_a64(s); > + > + tcg_gen_addi_i64(addr, cpu_reg_sp(s, a->rn), > + (a->imm * elements * (a->nreg + 1)) > + << dtype_msz(a->dtype)); > + do_ld_zpa(s, a->rd, a->pg, addr, a->dtype, a->nreg); > + } > + return true; > +} > diff --git a/target/arm/sve.decode b/target/arm/sve.decode > index 6f436f9096..cfb12da639 100644 > --- a/target/arm/sve.decode > +++ b/target/arm/sve.decode > @@ -45,6 +45,9 @@ > # Unsigned 8-bit immediate, optionally shifted left by 8. > %sh8_i8u 5:9 !function=expand_imm_sh8u > > +# Unsigned load of msz into esz=2, represented as a dtype. > +%msz_dtype 23:2 !function=msz_dtype > + > # Either a copy of rd (at bit 0), or a different source > # as propagated via the MOVPRFX instruction. > %reg_movprfx 0:5 > @@ -71,6 +74,8 @@ > &incdec2_cnt rd rn pat esz imm d u > &incdec_pred rd pg esz d u > &incdec2_pred rd rn pg esz d u > +&rprr_load rd pg rn rm dtype nreg > +&rpri_load rd pg rn imm dtype nreg > > ########################################################################### > # Named instruction formats. These are generally used to > @@ -170,6 +175,15 @@ > @incdec2_pred ........ esz:2 .... .. ..... .. pg:4 rd:5 \ > &incdec2_pred rn=%reg_movprfx > > +# Loads; user must fill in NREG. > +@rprr_load_dt ....... dtype:4 rm:5 ... pg:3 rn:5 rd:5 &rprr_load > +@rpri_load_dt ....... dtype:4 . imm:s4 ... pg:3 rn:5 rd:5 &rpri_load > + > +@rprr_load_msz ....... .... rm:5 ... pg:3 rn:5 rd:5 \ > + &rprr_load dtype=%msz_dtype > +@rpri_load_msz ....... .... . imm:s4 ... pg:3 rn:5 rd:5 \ > + &rpri_load dtype=%msz_dtype > + > ########################################################################### > # Instruction patterns. Grouped according to the SVE encodingindex.xhtml. > > @@ -665,3 +679,23 @@ LDR_pri 10000101 10 ...... 000 ... ..... 0 .... @pd_rn_i9 > > # SVE load vector register > LDR_zri 10000101 10 ...... 010 ... ..... ..... @rd_rn_i9 > + > +### SVE Memory Contiguous Load Group > + > +# SVE contiguous load (scalar plus scalar) > +LD_zprr 1010010 .... ..... 010 ... ..... ..... @rprr_load_dt nreg=0 > + > +# SVE contiguous load (scalar plus immediate) > +LD_zpri 1010010 .... 0.... 101 ... ..... ..... @rpri_load_dt nreg=0 > + > +# SVE contiguous non-temporal load (scalar plus scalar) > +# LDNT1B, LDNT1H, LDNT1W, LDNT1D > +# SVE load multiple structures (scalar plus scalar) > +# LD2B, LD2H, LD2W, LD2D; etc. > +LD_zprr 1010010 .. nreg:2 ..... 110 ... ..... ..... @rprr_load_msz > + > +# SVE contiguous non-temporal load (scalar plus immediate) > +# LDNT1B, LDNT1H, LDNT1W, LDNT1D > +# SVE load multiple structures (scalar plus immediate) > +# LD2B, LD2H, LD2W, LD2D; etc. > +LD_zpri 1010010 .. nreg:2 0.... 111 ... ..... ..... @rpri_load_msz Otherwise: Reviewed-by: Alex Bennée <alex.bennee@linaro.org> -- Alex Bennée
On 06/26/2018 02:55 AM, Alex Bennée wrote: >> +/* Convert a 2-bit memory size (msz) to a 4-bit data type (dtype) >> + * with unsigned data. C.f. SVE Memory Contiguous Load Group. >> + */ >> +static inline int msz_dtype(int msz) >> +{ >> + static const uint8_t dtype[4] = { 0, 5, 10, 15 }; >> + return dtype[msz]; >> +} > I'm a little confused by the magic numbers in dtype[4], do they map > directly to dtype_mop[]? > Well, yes, this would sort of be the inverse of dtype_mop. My intent with the comment was to point you to the table within the SVE Memory - Contiguous Load Group section of the Index by Encoding page: DDI0584A_d_SVE/SVE_xml/xhtml/encodingindex.html#sve_memcld and that I'm picking out the unsigned loads of size 1, 2, 4, 8. Do you have a suggested re-wording? I should note that *most* load operations use a 4-bit dtype field, except for the non-temporal loads, which use a 2-bit msz field. Since qemu does not care about the memory hierarchy, by mapping msz back into dtype I can forward the implementation directly to the normal load routines. r~
diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h index 2e76084992..fcc9ba5f50 100644 --- a/target/arm/helper-sve.h +++ b/target/arm/helper-sve.h @@ -719,3 +719,38 @@ DEF_HELPER_FLAGS_5(gvec_rsqrts_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_5(gvec_rsqrts_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) + +DEF_HELPER_FLAGS_4(sve_ld1bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld2bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld3bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld4bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) + +DEF_HELPER_FLAGS_4(sve_ld1hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld2hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld3hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld4hh_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) + +DEF_HELPER_FLAGS_4(sve_ld1ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld2ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld3ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld4ss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) + +DEF_HELPER_FLAGS_4(sve_ld1dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld2dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld3dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld4dd_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) + +DEF_HELPER_FLAGS_4(sve_ld1bhu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1bsu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1bdu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1bhs_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1bss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1bds_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) + +DEF_HELPER_FLAGS_4(sve_ld1hsu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1hdu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1hss_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1hds_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) + +DEF_HELPER_FLAGS_4(sve_ld1sdu_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) +DEF_HELPER_FLAGS_4(sve_ld1sds_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32) diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index 128bbf9b04..4e6ad282f9 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -2810,3 +2810,156 @@ uint32_t HELPER(sve_while)(void *vd, uint32_t count, uint32_t pred_desc) return predtest_ones(d, oprsz, esz_mask); } + +/* + * Load contiguous data, protected by a governing predicate. + */ +#define DO_LD1(NAME, FN, TYPEE, TYPEM, H) \ +static void do_##NAME(CPUARMState *env, void *vd, void *vg, \ + target_ulong addr, intptr_t oprsz, \ + uintptr_t ra) \ +{ \ + intptr_t i = 0; \ + do { \ + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ + do { \ + TYPEM m = 0; \ + if (pg & 1) { \ + m = FN(env, addr, ra); \ + } \ + *(TYPEE *)(vd + H(i)) = m; \ + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ + addr += sizeof(TYPEM); \ + } while (i & 15); \ + } while (i < oprsz); \ +} \ +void HELPER(NAME)(CPUARMState *env, void *vg, \ + target_ulong addr, uint32_t desc) \ +{ \ + do_##NAME(env, &env->vfp.zregs[simd_data(desc)], vg, \ + addr, simd_oprsz(desc), GETPC()); \ +} + +#define DO_LD2(NAME, FN, TYPEE, TYPEM, H) \ +void HELPER(NAME)(CPUARMState *env, void *vg, \ + target_ulong addr, uint32_t desc) \ +{ \ + intptr_t i, oprsz = simd_oprsz(desc); \ + intptr_t ra = GETPC(); \ + unsigned rd = simd_data(desc); \ + void *d1 = &env->vfp.zregs[rd]; \ + void *d2 = &env->vfp.zregs[(rd + 1) & 31]; \ + for (i = 0; i < oprsz; ) { \ + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ + do { \ + TYPEM m1 = 0, m2 = 0; \ + if (pg & 1) { \ + m1 = FN(env, addr, ra); \ + m2 = FN(env, addr + sizeof(TYPEM), ra); \ + } \ + *(TYPEE *)(d1 + H(i)) = m1; \ + *(TYPEE *)(d2 + H(i)) = m2; \ + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ + addr += 2 * sizeof(TYPEM); \ + } while (i & 15); \ + } \ +} + +#define DO_LD3(NAME, FN, TYPEE, TYPEM, H) \ +void HELPER(NAME)(CPUARMState *env, void *vg, \ + target_ulong addr, uint32_t desc) \ +{ \ + intptr_t i, oprsz = simd_oprsz(desc); \ + intptr_t ra = GETPC(); \ + unsigned rd = simd_data(desc); \ + void *d1 = &env->vfp.zregs[rd]; \ + void *d2 = &env->vfp.zregs[(rd + 1) & 31]; \ + void *d3 = &env->vfp.zregs[(rd + 2) & 31]; \ + for (i = 0; i < oprsz; ) { \ + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ + do { \ + TYPEM m1 = 0, m2 = 0, m3 = 0; \ + if (pg & 1) { \ + m1 = FN(env, addr, ra); \ + m2 = FN(env, addr + sizeof(TYPEM), ra); \ + m3 = FN(env, addr + 2 * sizeof(TYPEM), ra); \ + } \ + *(TYPEE *)(d1 + H(i)) = m1; \ + *(TYPEE *)(d2 + H(i)) = m2; \ + *(TYPEE *)(d3 + H(i)) = m3; \ + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ + addr += 3 * sizeof(TYPEM); \ + } while (i & 15); \ + } \ +} + +#define DO_LD4(NAME, FN, TYPEE, TYPEM, H) \ +void HELPER(NAME)(CPUARMState *env, void *vg, \ + target_ulong addr, uint32_t desc) \ +{ \ + intptr_t i, oprsz = simd_oprsz(desc); \ + intptr_t ra = GETPC(); \ + unsigned rd = simd_data(desc); \ + void *d1 = &env->vfp.zregs[rd]; \ + void *d2 = &env->vfp.zregs[(rd + 1) & 31]; \ + void *d3 = &env->vfp.zregs[(rd + 2) & 31]; \ + void *d4 = &env->vfp.zregs[(rd + 3) & 31]; \ + for (i = 0; i < oprsz; ) { \ + uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ + do { \ + TYPEM m1 = 0, m2 = 0, m3 = 0, m4 = 0; \ + if (pg & 1) { \ + m1 = FN(env, addr, ra); \ + m2 = FN(env, addr + sizeof(TYPEM), ra); \ + m3 = FN(env, addr + 2 * sizeof(TYPEM), ra); \ + m4 = FN(env, addr + 3 * sizeof(TYPEM), ra); \ + } \ + *(TYPEE *)(d1 + H(i)) = m1; \ + *(TYPEE *)(d2 + H(i)) = m2; \ + *(TYPEE *)(d3 + H(i)) = m3; \ + *(TYPEE *)(d4 + H(i)) = m4; \ + i += sizeof(TYPEE), pg >>= sizeof(TYPEE); \ + addr += 4 * sizeof(TYPEM); \ + } while (i & 15); \ + } \ +} + +DO_LD1(sve_ld1bhu_r, cpu_ldub_data_ra, uint16_t, uint8_t, H1_2) +DO_LD1(sve_ld1bhs_r, cpu_ldsb_data_ra, uint16_t, int8_t, H1_2) +DO_LD1(sve_ld1bsu_r, cpu_ldub_data_ra, uint32_t, uint8_t, H1_4) +DO_LD1(sve_ld1bss_r, cpu_ldsb_data_ra, uint32_t, int8_t, H1_4) +DO_LD1(sve_ld1bdu_r, cpu_ldub_data_ra, uint64_t, uint8_t, ) +DO_LD1(sve_ld1bds_r, cpu_ldsb_data_ra, uint64_t, int8_t, ) + +DO_LD1(sve_ld1hsu_r, cpu_lduw_data_ra, uint32_t, uint16_t, H1_4) +DO_LD1(sve_ld1hss_r, cpu_ldsw_data_ra, uint32_t, int8_t, H1_4) +DO_LD1(sve_ld1hdu_r, cpu_lduw_data_ra, uint64_t, uint16_t, ) +DO_LD1(sve_ld1hds_r, cpu_ldsw_data_ra, uint64_t, int16_t, ) + +DO_LD1(sve_ld1sdu_r, cpu_ldl_data_ra, uint64_t, uint32_t, ) +DO_LD1(sve_ld1sds_r, cpu_ldl_data_ra, uint64_t, int32_t, ) + +DO_LD1(sve_ld1bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) +DO_LD2(sve_ld2bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) +DO_LD3(sve_ld3bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) +DO_LD4(sve_ld4bb_r, cpu_ldub_data_ra, uint8_t, uint8_t, H1) + +DO_LD1(sve_ld1hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) +DO_LD2(sve_ld2hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) +DO_LD3(sve_ld3hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) +DO_LD4(sve_ld4hh_r, cpu_lduw_data_ra, uint16_t, uint16_t, H1_2) + +DO_LD1(sve_ld1ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) +DO_LD2(sve_ld2ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) +DO_LD3(sve_ld3ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) +DO_LD4(sve_ld4ss_r, cpu_ldl_data_ra, uint32_t, uint32_t, H1_4) + +DO_LD1(sve_ld1dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) +DO_LD2(sve_ld2dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) +DO_LD3(sve_ld3dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) +DO_LD4(sve_ld4dd_r, cpu_ldq_data_ra, uint64_t, uint64_t, ) + +#undef DO_LD1 +#undef DO_LD2 +#undef DO_LD3 +#undef DO_LD4 diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 226c97579c..3543daff48 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -42,6 +42,8 @@ typedef void gen_helper_gvec_flags_3(TCGv_i32, TCGv_ptr, TCGv_ptr, typedef void gen_helper_gvec_flags_4(TCGv_i32, TCGv_ptr, TCGv_ptr, TCGv_ptr, TCGv_ptr, TCGv_i32); +typedef void gen_helper_gvec_mem(TCGv_env, TCGv_ptr, TCGv_i64, TCGv_i32); + /* * Helpers for extracting complex instruction fields. */ @@ -82,6 +84,15 @@ static inline int expand_imm_sh8u(int x) return (uint8_t)x << (x & 0x100 ? 8 : 0); } +/* Convert a 2-bit memory size (msz) to a 4-bit data type (dtype) + * with unsigned data. C.f. SVE Memory Contiguous Load Group. + */ +static inline int msz_dtype(int msz) +{ + static const uint8_t dtype[4] = { 0, 5, 10, 15 }; + return dtype[msz]; +} + /* * Include the generated decoder. */ @@ -3526,3 +3537,113 @@ static bool trans_LDR_pri(DisasContext *s, arg_rri *a, uint32_t insn) } return true; } + +/* + *** SVE Memory - Contiguous Load Group + */ + +/* The memory mode of the dtype. */ +static const TCGMemOp dtype_mop[16] = { + MO_UB, MO_UB, MO_UB, MO_UB, + MO_SL, MO_UW, MO_UW, MO_UW, + MO_SW, MO_SW, MO_UL, MO_UL, + MO_SB, MO_SB, MO_SB, MO_Q +}; + +#define dtype_msz(x) (dtype_mop[x] & MO_SIZE) + +/* The vector element size of dtype. */ +static const uint8_t dtype_esz[16] = { + 0, 1, 2, 3, + 3, 1, 2, 3, + 3, 2, 2, 3, + 3, 2, 1, 3 +}; + +static void do_mem_zpa(DisasContext *s, int zt, int pg, TCGv_i64 addr, + gen_helper_gvec_mem *fn) +{ + unsigned vsz = vec_full_reg_size(s); + TCGv_ptr t_pg; + TCGv_i32 desc; + + /* For e.g. LD4, there are not enough arguments to pass all 4 + * registers as pointers, so encode the regno into the data field. + * For consistency, do this even for LD1. + */ + desc = tcg_const_i32(simd_desc(vsz, vsz, zt)); + t_pg = tcg_temp_new_ptr(); + + tcg_gen_addi_ptr(t_pg, cpu_env, pred_full_reg_offset(s, pg)); + fn(cpu_env, t_pg, addr, desc); + + tcg_temp_free_ptr(t_pg); + tcg_temp_free_i32(desc); +} + +static void do_ld_zpa(DisasContext *s, int zt, int pg, + TCGv_i64 addr, int dtype, int nreg) +{ + static gen_helper_gvec_mem * const fns[16][4] = { + { gen_helper_sve_ld1bb_r, gen_helper_sve_ld2bb_r, + gen_helper_sve_ld3bb_r, gen_helper_sve_ld4bb_r }, + { gen_helper_sve_ld1bhu_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1bsu_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1bdu_r, NULL, NULL, NULL }, + + { gen_helper_sve_ld1sds_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1hh_r, gen_helper_sve_ld2hh_r, + gen_helper_sve_ld3hh_r, gen_helper_sve_ld4hh_r }, + { gen_helper_sve_ld1hsu_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1hdu_r, NULL, NULL, NULL }, + + { gen_helper_sve_ld1hds_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1hss_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1ss_r, gen_helper_sve_ld2ss_r, + gen_helper_sve_ld3ss_r, gen_helper_sve_ld4ss_r }, + { gen_helper_sve_ld1sdu_r, NULL, NULL, NULL }, + + { gen_helper_sve_ld1bds_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1bss_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1bhs_r, NULL, NULL, NULL }, + { gen_helper_sve_ld1dd_r, gen_helper_sve_ld2dd_r, + gen_helper_sve_ld3dd_r, gen_helper_sve_ld4dd_r }, + }; + gen_helper_gvec_mem *fn = fns[dtype][nreg]; + + /* While there are holes in the table, they are not + * accessible via the instruction encoding. + */ + assert(fn != NULL); + do_mem_zpa(s, zt, pg, addr, fn); +} + +static bool trans_LD_zprr(DisasContext *s, arg_rprr_load *a, uint32_t insn) +{ + if (a->rm == 31) { + return false; + } + if (sve_access_check(s)) { + TCGv_i64 addr = new_tmp_a64(s); + tcg_gen_muli_i64(addr, cpu_reg(s, a->rm), + (a->nreg + 1) << dtype_msz(a->dtype)); + tcg_gen_add_i64(addr, addr, cpu_reg_sp(s, a->rn)); + do_ld_zpa(s, a->rd, a->pg, addr, a->dtype, a->nreg); + } + return true; +} + +static bool trans_LD_zpri(DisasContext *s, arg_rpri_load *a, uint32_t insn) +{ + if (sve_access_check(s)) { + int vsz = vec_full_reg_size(s); + int elements = vsz >> dtype_esz[a->dtype]; + TCGv_i64 addr = new_tmp_a64(s); + + tcg_gen_addi_i64(addr, cpu_reg_sp(s, a->rn), + (a->imm * elements * (a->nreg + 1)) + << dtype_msz(a->dtype)); + do_ld_zpa(s, a->rd, a->pg, addr, a->dtype, a->nreg); + } + return true; +} diff --git a/target/arm/sve.decode b/target/arm/sve.decode index 6f436f9096..cfb12da639 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -45,6 +45,9 @@ # Unsigned 8-bit immediate, optionally shifted left by 8. %sh8_i8u 5:9 !function=expand_imm_sh8u +# Unsigned load of msz into esz=2, represented as a dtype. +%msz_dtype 23:2 !function=msz_dtype + # Either a copy of rd (at bit 0), or a different source # as propagated via the MOVPRFX instruction. %reg_movprfx 0:5 @@ -71,6 +74,8 @@ &incdec2_cnt rd rn pat esz imm d u &incdec_pred rd pg esz d u &incdec2_pred rd rn pg esz d u +&rprr_load rd pg rn rm dtype nreg +&rpri_load rd pg rn imm dtype nreg ########################################################################### # Named instruction formats. These are generally used to @@ -170,6 +175,15 @@ @incdec2_pred ........ esz:2 .... .. ..... .. pg:4 rd:5 \ &incdec2_pred rn=%reg_movprfx +# Loads; user must fill in NREG. +@rprr_load_dt ....... dtype:4 rm:5 ... pg:3 rn:5 rd:5 &rprr_load +@rpri_load_dt ....... dtype:4 . imm:s4 ... pg:3 rn:5 rd:5 &rpri_load + +@rprr_load_msz ....... .... rm:5 ... pg:3 rn:5 rd:5 \ + &rprr_load dtype=%msz_dtype +@rpri_load_msz ....... .... . imm:s4 ... pg:3 rn:5 rd:5 \ + &rpri_load dtype=%msz_dtype + ########################################################################### # Instruction patterns. Grouped according to the SVE encodingindex.xhtml. @@ -665,3 +679,23 @@ LDR_pri 10000101 10 ...... 000 ... ..... 0 .... @pd_rn_i9 # SVE load vector register LDR_zri 10000101 10 ...... 010 ... ..... ..... @rd_rn_i9 + +### SVE Memory Contiguous Load Group + +# SVE contiguous load (scalar plus scalar) +LD_zprr 1010010 .... ..... 010 ... ..... ..... @rprr_load_dt nreg=0 + +# SVE contiguous load (scalar plus immediate) +LD_zpri 1010010 .... 0.... 101 ... ..... ..... @rpri_load_dt nreg=0 + +# SVE contiguous non-temporal load (scalar plus scalar) +# LDNT1B, LDNT1H, LDNT1W, LDNT1D +# SVE load multiple structures (scalar plus scalar) +# LD2B, LD2H, LD2W, LD2D; etc. +LD_zprr 1010010 .. nreg:2 ..... 110 ... ..... ..... @rprr_load_msz + +# SVE contiguous non-temporal load (scalar plus immediate) +# LDNT1B, LDNT1H, LDNT1W, LDNT1D +# SVE load multiple structures (scalar plus immediate) +# LD2B, LD2H, LD2W, LD2D; etc. +LD_zpri 1010010 .. nreg:2 0.... 111 ... ..... ..... @rpri_load_msz
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/arm/helper-sve.h | 35 +++++++++ target/arm/sve_helper.c | 153 +++++++++++++++++++++++++++++++++++++ target/arm/translate-sve.c | 121 +++++++++++++++++++++++++++++ target/arm/sve.decode | 34 +++++++++ 4 files changed, 343 insertions(+)