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target/arm: Convert Cryptographic 3-register, imm2 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: 20240524232121.284515-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-05-24 16:20:29 -07:00 committed by Peter Maydell
parent 50941556ff
commit 376bb8a45d
2 changed files with 22 additions and 31 deletions
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10
target/arm/tcg/a64.decode
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@ -644,3 +644,13 @@ SM4E 1100 1110 110 00000 100001 ..... ..... @r2r_q1e0
EOR3 1100 1110 000 ..... 0 ..... ..... ..... @rrrr_q1e3
BCAX 1100 1110 001 ..... 0 ..... ..... ..... @rrrr_q1e3
SM3SS1 1100 1110 010 ..... 0 ..... ..... ..... @rrrr_q1e3
### Cryptographic three-register, imm2
&crypto3i rd rn rm imm
@crypto3i ........ ... rm:5 .. imm:2 .. rn:5 rd:5 &crypto3i
SM3TT1A 11001110 010 ..... 10 .. 00 ..... ..... @crypto3i
SM3TT1B 11001110 010 ..... 10 .. 01 ..... ..... @crypto3i
SM3TT2A 11001110 010 ..... 10 .. 10 ..... ..... @crypto3i
SM3TT2B 11001110 010 ..... 10 .. 11 ..... ..... @crypto3i

43
target/arm/tcg/translate-a64.c
View File

@ -4676,6 +4676,18 @@ static bool trans_SM3SS1(DisasContext *s, arg_SM3SS1 *a)
return true;
}
static bool do_crypto3i(DisasContext *s, arg_crypto3i *a, gen_helper_gvec_3 *fn)
{
if (fp_access_check(s)) {
gen_gvec_op3_ool(s, true, a->rd, a->rn, a->rm, a->imm, fn);
}
return true;
}
TRANS_FEAT(SM3TT1A, aa64_sm3, do_crypto3i, a, gen_helper_crypto_sm3tt1a)
TRANS_FEAT(SM3TT1B, aa64_sm3, do_crypto3i, a, gen_helper_crypto_sm3tt1b)
TRANS_FEAT(SM3TT2A, aa64_sm3, do_crypto3i, a, gen_helper_crypto_sm3tt2a)
TRANS_FEAT(SM3TT2B, aa64_sm3, do_crypto3i, a, gen_helper_crypto_sm3tt2b)
/* Shift a TCGv src by TCGv shift_amount, put result in dst.
* Note that it is the caller's responsibility to ensure that the
* shift amount is in range (ie 0..31 or 0..63) and provide the ARM
@ -13604,36 +13616,6 @@ static void disas_crypto_xar(DisasContext *s, uint32_t insn)
vec_full_reg_size(s));
}
/* Crypto three-reg imm2
* 31 21 20 16 15 14 13 12 11 10 9 5 4 0
* +-----------------------+------+-----+------+--------+------+------+
* | 1 1 0 0 1 1 1 0 0 1 0 | Rm | 1 0 | imm2 | opcode | Rn | Rd |
* +-----------------------+------+-----+------+--------+------+------+
*/
static void disas_crypto_three_reg_imm2(DisasContext *s, uint32_t insn)
{
static gen_helper_gvec_3 * const fns[4] = {
gen_helper_crypto_sm3tt1a, gen_helper_crypto_sm3tt1b,
gen_helper_crypto_sm3tt2a, gen_helper_crypto_sm3tt2b,
};
int opcode = extract32(insn, 10, 2);
int imm2 = extract32(insn, 12, 2);
int rm = extract32(insn, 16, 5);
int rn = extract32(insn, 5, 5);
int rd = extract32(insn, 0, 5);
if (!dc_isar_feature(aa64_sm3, s)) {
unallocated_encoding(s);
return;
}
if (!fp_access_check(s)) {
return;
}
gen_gvec_op3_ool(s, true, rd, rn, rm, imm2, fns[opcode]);
}
/* C3.6 Data processing - SIMD, inc Crypto
*
* As the decode gets a little complex we are using a table based
@ -13663,7 +13645,6 @@ static const AArch64DecodeTable data_proc_simd[] = {
{ 0x5f000000, 0xdf000400, disas_simd_indexed }, /* scalar indexed */
{ 0x5f000400, 0xdf800400, disas_simd_scalar_shift_imm },
{ 0xce800000, 0xffe00000, disas_crypto_xar },
{ 0xce408000, 0xffe0c000, disas_crypto_three_reg_imm2 },
{ 0x0e400400, 0x9f60c400, disas_simd_three_reg_same_fp16 },
{ 0x0e780800, 0x8f7e0c00, disas_simd_two_reg_misc_fp16 },
{ 0x5e400400, 0xdf60c400, disas_simd_scalar_three_reg_same_fp16 },