diff options
Diffstat (limited to 'target/loongarch')
| -rw-r--r-- | target/loongarch/fpu_helper.c | 6 | ||||
| -rw-r--r-- | target/loongarch/helper.h | 2 | ||||
| -rw-r--r-- | target/loongarch/insn_trans/trans_fmov.c.inc | 157 | ||||
| -rw-r--r-- | target/loongarch/insns.decode | 37 | ||||
| -rw-r--r-- | target/loongarch/translate.c | 1 |
5 files changed, 203 insertions, 0 deletions
diff --git a/target/loongarch/fpu_helper.c b/target/loongarch/fpu_helper.c index 8146667..3d0cb8d 100644 --- a/target/loongarch/fpu_helper.c +++ b/target/loongarch/fpu_helper.c @@ -854,3 +854,9 @@ uint64_t helper_ftint_w_d(CPULoongArchState *env, uint64_t fj) update_fcsr0(env, GETPC()); return fd; } + +void helper_set_rounding_mode(CPULoongArchState *env, uint32_t fcsr0) +{ + set_float_rounding_mode(ieee_rm[(fcsr0 >> FCSR0_RM) & 0x3], + &env->fp_status); +} diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h index 1e87494..da1a2bc 100644 --- a/target/loongarch/helper.h +++ b/target/loongarch/helper.h @@ -90,3 +90,5 @@ DEF_HELPER_2(ftint_w_s, i64, env, i64) DEF_HELPER_2(ftint_w_d, i64, env, i64) DEF_HELPER_2(frint_s, i64, env, i64) DEF_HELPER_2(frint_d, i64, env, i64) + +DEF_HELPER_FLAGS_2(set_rounding_mode, TCG_CALL_NO_RWG, void, env, i32) diff --git a/target/loongarch/insn_trans/trans_fmov.c.inc b/target/loongarch/insn_trans/trans_fmov.c.inc new file mode 100644 index 0000000..24753d4 --- /dev/null +++ b/target/loongarch/insn_trans/trans_fmov.c.inc @@ -0,0 +1,157 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (c) 2021 Loongson Technology Corporation Limited + */ + +static const uint32_t fcsr_mask[4] = { + UINT32_MAX, FCSR0_M1, FCSR0_M2, FCSR0_M3 +}; + +static bool trans_fsel(DisasContext *ctx, arg_fsel *a) +{ + TCGv zero = tcg_constant_tl(0); + TCGv cond = tcg_temp_new(); + + tcg_gen_ld8u_tl(cond, cpu_env, offsetof(CPULoongArchState, cf[a->ca])); + tcg_gen_movcond_tl(TCG_COND_EQ, cpu_fpr[a->fd], cond, zero, + cpu_fpr[a->fj], cpu_fpr[a->fk]); + tcg_temp_free(cond); + + return true; +} + +static bool gen_f2f(DisasContext *ctx, arg_ff *a, + void (*func)(TCGv, TCGv), bool nanbox) +{ + TCGv dest = cpu_fpr[a->fd]; + TCGv src = cpu_fpr[a->fj]; + + func(dest, src); + if (nanbox) { + gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]); + } + + return true; +} + +static bool gen_r2f(DisasContext *ctx, arg_fr *a, + void (*func)(TCGv, TCGv)) +{ + TCGv src = gpr_src(ctx, a->rj, EXT_NONE); + + func(cpu_fpr[a->fd], src); + return true; +} + +static bool gen_f2r(DisasContext *ctx, arg_rf *a, + void (*func)(TCGv, TCGv)) +{ + TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE); + + func(dest, cpu_fpr[a->fj]); + gen_set_gpr(a->rd, dest, EXT_NONE); + + return true; +} + +static bool trans_movgr2fcsr(DisasContext *ctx, arg_movgr2fcsr *a) +{ + uint32_t mask = fcsr_mask[a->fcsrd]; + TCGv Rj = gpr_src(ctx, a->rj, EXT_NONE); + + if (mask == UINT32_MAX) { + tcg_gen_extrl_i64_i32(cpu_fcsr0, Rj); + } else { + TCGv_i32 temp = tcg_temp_new_i32(); + + tcg_gen_extrl_i64_i32(temp, Rj); + tcg_gen_andi_i32(temp, temp, mask); + tcg_gen_andi_i32(cpu_fcsr0, cpu_fcsr0, ~mask); + tcg_gen_or_i32(cpu_fcsr0, cpu_fcsr0, temp); + tcg_temp_free_i32(temp); + + /* + * Install the new rounding mode to fpu_status, if changed. + * Note that FCSR3 is exactly the rounding mode field. + */ + if (mask != FCSR0_M3) { + return true; + } + } + gen_helper_set_rounding_mode(cpu_env, cpu_fcsr0); + + return true; +} + +static bool trans_movfcsr2gr(DisasContext *ctx, arg_movfcsr2gr *a) +{ + TCGv_i32 temp = tcg_temp_new_i32(); + TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE); + + tcg_gen_andi_i32(temp, cpu_fcsr0, fcsr_mask[a->fcsrs]); + tcg_gen_ext_i32_i64(dest, temp); + gen_set_gpr(a->rd, dest, EXT_NONE); + tcg_temp_free_i32(temp); + + return true; +} + +static void gen_movgr2fr_w(TCGv dest, TCGv src) +{ + tcg_gen_deposit_i64(dest, dest, src, 0, 32); +} + +static void gen_movgr2frh_w(TCGv dest, TCGv src) +{ + tcg_gen_deposit_i64(dest, dest, src, 32, 32); +} + +static void gen_movfrh2gr_s(TCGv dest, TCGv src) +{ + tcg_gen_sextract_tl(dest, src, 32, 32); +} + +static bool trans_movfr2cf(DisasContext *ctx, arg_movfr2cf *a) +{ + TCGv t0 = tcg_temp_new(); + + tcg_gen_andi_tl(t0, cpu_fpr[a->fj], 0x1); + tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7])); + tcg_temp_free(t0); + + return true; +} + +static bool trans_movcf2fr(DisasContext *ctx, arg_movcf2fr *a) +{ + tcg_gen_ld8u_tl(cpu_fpr[a->fd], cpu_env, + offsetof(CPULoongArchState, cf[a->cj & 0x7])); + return true; +} + +static bool trans_movgr2cf(DisasContext *ctx, arg_movgr2cf *a) +{ + TCGv t0 = tcg_temp_new(); + + tcg_gen_andi_tl(t0, gpr_src(ctx, a->rj, EXT_NONE), 0x1); + tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7])); + tcg_temp_free(t0); + + return true; +} + +static bool trans_movcf2gr(DisasContext *ctx, arg_movcf2gr *a) +{ + tcg_gen_ld8u_tl(gpr_dst(ctx, a->rd, EXT_NONE), cpu_env, + offsetof(CPULoongArchState, cf[a->cj & 0x7])); + return true; +} + +TRANS(fmov_s, gen_f2f, tcg_gen_mov_tl, true) +TRANS(fmov_d, gen_f2f, tcg_gen_mov_tl, false) +TRANS(movgr2fr_w, gen_r2f, gen_movgr2fr_w) +TRANS(movgr2fr_d, gen_r2f, tcg_gen_mov_tl) +TRANS(movgr2frh_w, gen_r2f, gen_movgr2frh_w) +TRANS(movfr2gr_s, gen_f2r, tcg_gen_ext32s_tl) +TRANS(movfr2gr_d, gen_f2r, tcg_gen_mov_tl) +TRANS(movfrh2gr_s, gen_f2r, gen_movfrh2gr_s) diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode index b9f135d..c62a4f6 100644 --- a/target/loongarch/insns.decode +++ b/target/loongarch/insns.decode @@ -27,6 +27,15 @@ &fff fd fj fk &ffff fd fj fk fa &cff_fcond cd fj fk fcond +&fffc fd fj fk ca +&fr fd rj +&rf rd fj +&fcsrd_r fcsrd rj +&r_fcsrs rd fcsrs +&cf cd fj +&fc fd cj +&cr cd rj +&rc rd cj # # Formats @@ -52,6 +61,15 @@ @fff .... ........ ..... fk:5 fj:5 fd:5 &fff @ffff .... ........ fa:5 fk:5 fj:5 fd:5 &ffff @cff_fcond .... ........ fcond:5 fk:5 fj:5 .. cd:3 &cff_fcond +@fffc .... ........ .. ca:3 fk:5 fj:5 fd:5 &fffc +@fr .... ........ ..... ..... rj:5 fd:5 &fr +@rf .... ........ ..... ..... fj:5 rd:5 &rf +@fcsrd_r .... ........ ..... ..... rj:5 fcsrd:5 &fcsrd_r +@r_fcsrs .... ........ ..... ..... fcsrs:5 rd:5 &r_fcsrs +@cf .... ........ ..... ..... fj:5 .. cd:3 &cf +@fc .... ........ ..... ..... .. cj:3 fd:5 &fc +@cr .... ........ ..... ..... rj:5 .. cd:3 &cr +@rc .... ........ ..... ..... .. cj:3 rd:5 &rc # # Fixed point arithmetic operation instruction @@ -348,3 +366,22 @@ ffint_d_w 0000 00010001 11010 01000 ..... ..... @ff ffint_d_l 0000 00010001 11010 01010 ..... ..... @ff frint_s 0000 00010001 11100 10001 ..... ..... @ff frint_d 0000 00010001 11100 10010 ..... ..... @ff + +# +# Floating point move instruction +# +fmov_s 0000 00010001 01001 00101 ..... ..... @ff +fmov_d 0000 00010001 01001 00110 ..... ..... @ff +fsel 0000 11010000 00 ... ..... ..... ..... @fffc +movgr2fr_w 0000 00010001 01001 01001 ..... ..... @fr +movgr2fr_d 0000 00010001 01001 01010 ..... ..... @fr +movgr2frh_w 0000 00010001 01001 01011 ..... ..... @fr +movfr2gr_s 0000 00010001 01001 01101 ..... ..... @rf +movfr2gr_d 0000 00010001 01001 01110 ..... ..... @rf +movfrh2gr_s 0000 00010001 01001 01111 ..... ..... @rf +movgr2fcsr 0000 00010001 01001 10000 ..... ..... @fcsrd_r +movfcsr2gr 0000 00010001 01001 10010 ..... ..... @r_fcsrs +movfr2cf 0000 00010001 01001 10100 ..... 00 ... @cf +movcf2fr 0000 00010001 01001 10101 00 ... ..... @fc +movgr2cf 0000 00010001 01001 10110 ..... 00 ... @cr +movcf2gr 0000 00010001 01001 10111 00 ... ..... @rc diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c index 26ef1e3..26d60b5 100644 --- a/target/loongarch/translate.c +++ b/target/loongarch/translate.c @@ -169,6 +169,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext) #include "insn_trans/trans_farith.c.inc" #include "insn_trans/trans_fcmp.c.inc" #include "insn_trans/trans_fcnv.c.inc" +#include "insn_trans/trans_fmov.c.inc" static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) { |