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| author | Max Filippov <jcmvbkbc@gmail.com> | 2012-09-19 04:23:57 +0400 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2012-09-22 17:59:12 +0000 |
| commit | b7ee8c6a32987e5039f0a2c2976fad556965727d (patch) | |
| tree | a642a35f389837a6141149cb2fd9781fea194deb /target-xtensa/translate.c | |
| parent | 0b6df8385d24a4eed0ff546493c59e047b16537b (diff) | |
| download | qemu-b7ee8c6a32987e5039f0a2c2976fad556965727d.tar.gz | |
target-xtensa: implement FP0 conversions
These are FP to integer and integer to FP conversion opcodes.
See ISA, 4.3.10 for more details.
Note that ISA description for utrunc.s is currently incorrect and will
be fixed in future revisions.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'target-xtensa/translate.c')
| -rw-r--r-- | target-xtensa/translate.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index 2125b1d00a..1627ad0dbf 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -1933,6 +1933,54 @@ static void disas_xtensa_insn(DisasContext *dc) cpu_FR[RRR_R], cpu_FR[RRR_S], cpu_FR[RRR_T]); break; + case 8: /*ROUND.Sf*/ + case 9: /*TRUNC.Sf*/ + case 10: /*FLOOR.Sf*/ + case 11: /*CEIL.Sf*/ + case 14: /*UTRUNC.Sf*/ + gen_window_check1(dc, RRR_R); + { + static const unsigned rounding_mode_const[] = { + float_round_nearest_even, + float_round_to_zero, + float_round_down, + float_round_up, + [6] = float_round_to_zero, + }; + TCGv_i32 rounding_mode = tcg_const_i32( + rounding_mode_const[OP2 & 7]); + TCGv_i32 scale = tcg_const_i32(RRR_T); + + if (OP2 == 14) { + gen_helper_ftoui(cpu_R[RRR_R], cpu_FR[RRR_S], + rounding_mode, scale); + } else { + gen_helper_ftoi(cpu_R[RRR_R], cpu_FR[RRR_S], + rounding_mode, scale); + } + + tcg_temp_free(rounding_mode); + tcg_temp_free(scale); + } + break; + + case 12: /*FLOAT.Sf*/ + case 13: /*UFLOAT.Sf*/ + gen_window_check1(dc, RRR_S); + { + TCGv_i32 scale = tcg_const_i32(-RRR_T); + + if (OP2 == 13) { + gen_helper_uitof(cpu_FR[RRR_R], cpu_env, + cpu_R[RRR_S], scale); + } else { + gen_helper_itof(cpu_FR[RRR_R], cpu_env, + cpu_R[RRR_S], scale); + } + tcg_temp_free(scale); + } + break; + case 15: /*FP1OP*/ switch (RRR_T) { case 0: /*MOV.Sf*/ |