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target/arm: Convert FJCVTZS to decodetree

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241211163036.2297116-34-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-11 10:30:00 -06:00 committed by Peter Maydell
parent f568134a57
commit a769f854e6
2 changed files with 22 additions and 21 deletions
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2
target/arm/tcg/a64.decode
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@ -1363,6 +1363,8 @@ FCVTZU_g . 0011110 .. 111001 000000 ..... ..... @icvt
FCVTAS_g . 0011110 .. 100100 000000 ..... ..... @icvt
FCVTAU_g . 0011110 .. 100101 000000 ..... ..... @icvt
FJCVTZS 0 0011110 01 111110 000000 ..... ..... @rr
# Floating-point data processing (1 source)
FMOV_s 00011110 .. 1 000000 10000 ..... ..... @rr_hsd

41
target/arm/tcg/translate-a64.c
View File

@ -8714,6 +8714,26 @@ TRANS(FCVTZU_g, do_fcvt_g, a, FPROUNDING_ZERO, false)
TRANS(FCVTAS_g, do_fcvt_g, a, FPROUNDING_TIEAWAY, true)
TRANS(FCVTAU_g, do_fcvt_g, a, FPROUNDING_TIEAWAY, false)
static bool trans_FJCVTZS(DisasContext *s, arg_FJCVTZS *a)
{
if (!dc_isar_feature(aa64_jscvt, s)) {
return false;
}
if (fp_access_check(s)) {
TCGv_i64 t = read_fp_dreg(s, a->rn);
TCGv_ptr fpstatus = fpstatus_ptr(FPST_FPCR);
gen_helper_fjcvtzs(t, t, fpstatus);
tcg_gen_ext32u_i64(cpu_reg(s, a->rd), t);
tcg_gen_extrh_i64_i32(cpu_ZF, t);
tcg_gen_movi_i32(cpu_CF, 0);
tcg_gen_movi_i32(cpu_NF, 0);
tcg_gen_movi_i32(cpu_VF, 0);
}
return true;
}
static void handle_fmov(DisasContext *s, int rd, int rn, int type, bool itof)
{
/* FMOV: gpr to or from float, double, or top half of quad fp reg,
@ -8775,20 +8795,6 @@ static void handle_fmov(DisasContext *s, int rd, int rn, int type, bool itof)
}
}
static void handle_fjcvtzs(DisasContext *s, int rd, int rn)
{
TCGv_i64 t = read_fp_dreg(s, rn);
TCGv_ptr fpstatus = fpstatus_ptr(FPST_FPCR);
gen_helper_fjcvtzs(t, t, fpstatus);
tcg_gen_ext32u_i64(cpu_reg(s, rd), t);
tcg_gen_extrh_i64_i32(cpu_ZF, t);
tcg_gen_movi_i32(cpu_CF, 0);
tcg_gen_movi_i32(cpu_NF, 0);
tcg_gen_movi_i32(cpu_VF, 0);
}
/* Floating point <-> integer conversions
* 31 30 29 28 24 23 22 21 20 19 18 16 15 10 9 5 4 0
* +----+---+---+-----------+------+---+-------+-----+-------------+----+----+
@ -8843,13 +8849,6 @@ static void disas_fp_int_conv(DisasContext *s, uint32_t insn)
break;
case 0b00111110: /* FJCVTZS */
if (!dc_isar_feature(aa64_jscvt, s)) {
goto do_unallocated;
} else if (fp_access_check(s)) {
handle_fjcvtzs(s, rd, rn);
}
break;
default:
do_unallocated:
unallocated_encoding(s);