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target/arm: Convert SUBP, IRG, GMI to decodetree

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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241211163036.2297116-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-11 10:29:32 -06:00 committed by Peter Maydell
parent 2a1560f5d3
commit 9be60681c2
2 changed files with 59 additions and 42 deletions
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7
target/arm/tcg/a64.decode
View File

@ -26,6 +26,7 @@
%hlm 11:1 20:2
&r rn
&rrr rd rn rm
&ri rd imm
&rri_sf rd rn imm sf
&rrr_sf rd rn rm sf
@ -656,6 +657,7 @@ CPYE 00 011 1 01100 ..... .... 01 ..... ..... @cpy
# Data Processing (2-source)
@rrr . .......... rm:5 ...... rn:5 rd:5 &rrr
@rrr_sf sf:1 .......... rm:5 ...... rn:5 rd:5 &rrr_sf
UDIV . 00 11010110 ..... 00001 0 ..... ..... @rrr_sf
@ -675,6 +677,11 @@ CRC32C 0 00 11010110 ..... 0101 01 ..... ..... @rrr_h
CRC32C 0 00 11010110 ..... 0101 10 ..... ..... @rrr_s
CRC32C 1 00 11010110 ..... 0101 11 ..... ..... @rrr_d
SUBP 1 00 11010110 ..... 000000 ..... ..... @rrr
SUBPS 1 01 11010110 ..... 000000 ..... ..... @rrr
IRG 1 00 11010110 ..... 000100 ..... ..... @rrr
GMI 1 00 11010110 ..... 000101 ..... ..... @rrr
# Data Processing (1-source)
# Logical (shifted reg)
# Add/subtract (shifted reg)

94
target/arm/tcg/translate-a64.c
View File

@ -7625,6 +7625,55 @@ static bool do_crc32(DisasContext *s, arg_rrr_e *a, bool crc32c)
TRANS_FEAT(CRC32, aa64_crc32, do_crc32, a, false)
TRANS_FEAT(CRC32C, aa64_crc32, do_crc32, a, true)
static bool do_subp(DisasContext *s, arg_rrr *a, bool setflag)
{
TCGv_i64 tcg_n = read_cpu_reg_sp(s, a->rn, true);
TCGv_i64 tcg_m = read_cpu_reg_sp(s, a->rm, true);
TCGv_i64 tcg_d = cpu_reg(s, a->rd);
tcg_gen_sextract_i64(tcg_n, tcg_n, 0, 56);
tcg_gen_sextract_i64(tcg_m, tcg_m, 0, 56);
if (setflag) {
gen_sub_CC(true, tcg_d, tcg_n, tcg_m);
} else {
tcg_gen_sub_i64(tcg_d, tcg_n, tcg_m);
}
return true;
}
TRANS_FEAT(SUBP, aa64_mte_insn_reg, do_subp, a, false)
TRANS_FEAT(SUBPS, aa64_mte_insn_reg, do_subp, a, true)
static bool trans_IRG(DisasContext *s, arg_rrr *a)
{
if (dc_isar_feature(aa64_mte_insn_reg, s)) {
TCGv_i64 tcg_rd = cpu_reg_sp(s, a->rd);
TCGv_i64 tcg_rn = cpu_reg_sp(s, a->rn);
if (s->ata[0]) {
gen_helper_irg(tcg_rd, tcg_env, tcg_rn, cpu_reg(s, a->rm));
} else {
gen_address_with_allocation_tag0(tcg_rd, tcg_rn);
}
return true;
}
return false;
}
static bool trans_GMI(DisasContext *s, arg_rrr *a)
{
if (dc_isar_feature(aa64_mte_insn_reg, s)) {
TCGv_i64 t = tcg_temp_new_i64();
tcg_gen_extract_i64(t, cpu_reg_sp(s, a->rn), 56, 4);
tcg_gen_shl_i64(t, tcg_constant_i64(1), t);
tcg_gen_or_i64(cpu_reg(s, a->rd), cpu_reg(s, a->rm), t);
return true;
}
return false;
}
/* Logical (shifted register)
* 31 30 29 28 24 23 22 21 20 16 15 10 9 5 4 0
* +----+-----+-----------+-------+---+------+--------+------+------+
@ -8528,48 +8577,6 @@ static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
}
switch (opcode) {
case 0: /* SUBP(S) */
if (sf == 0 || !dc_isar_feature(aa64_mte_insn_reg, s)) {
goto do_unallocated;
} else {
TCGv_i64 tcg_n, tcg_m, tcg_d;
tcg_n = read_cpu_reg_sp(s, rn, true);
tcg_m = read_cpu_reg_sp(s, rm, true);
tcg_gen_sextract_i64(tcg_n, tcg_n, 0, 56);
tcg_gen_sextract_i64(tcg_m, tcg_m, 0, 56);
tcg_d = cpu_reg(s, rd);
if (setflag) {
gen_sub_CC(true, tcg_d, tcg_n, tcg_m);
} else {
tcg_gen_sub_i64(tcg_d, tcg_n, tcg_m);
}
}
break;
case 4: /* IRG */
if (sf == 0 || !dc_isar_feature(aa64_mte_insn_reg, s)) {
goto do_unallocated;
}
if (s->ata[0]) {
gen_helper_irg(cpu_reg_sp(s, rd), tcg_env,
cpu_reg_sp(s, rn), cpu_reg(s, rm));
} else {
gen_address_with_allocation_tag0(cpu_reg_sp(s, rd),
cpu_reg_sp(s, rn));
}
break;
case 5: /* GMI */
if (sf == 0 || !dc_isar_feature(aa64_mte_insn_reg, s)) {
goto do_unallocated;
} else {
TCGv_i64 t = tcg_temp_new_i64();
tcg_gen_extract_i64(t, cpu_reg_sp(s, rn), 56, 4);
tcg_gen_shl_i64(t, tcg_constant_i64(1), t);
tcg_gen_or_i64(cpu_reg(s, rd), cpu_reg(s, rm), t);
}
break;
case 12: /* PACGA */
if (sf == 0 || !dc_isar_feature(aa64_pauth, s)) {
goto do_unallocated;
@ -8579,8 +8586,11 @@ static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
break;
default:
do_unallocated:
case 0: /* SUBP(S) */
case 2: /* UDIV */
case 3: /* SDIV */
case 4: /* IRG */
case 5: /* GMI */
case 8: /* LSLV */
case 9: /* LSRV */
case 10: /* ASRV */