diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/translate-a64.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 9d3a6ac49f..52cecae047 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -7802,6 +7802,104 @@ static void disas_simd_scalar_three_reg_same(DisasContext *s, uint32_t insn) tcg_temp_free_i64(tcg_rd); } +/* AdvSIMD scalar three same FP16 + * 31 30 29 28 24 23 22 21 20 16 15 14 13 11 10 9 5 4 0 + * +-----+---+-----------+---+-----+------+-----+--------+---+----+----+ + * | 0 1 | U | 1 1 1 1 0 | a | 1 0 | Rm | 0 0 | opcode | 1 | Rn | Rd | + * +-----+---+-----------+---+-----+------+-----+--------+---+----+----+ + * v: 0101 1110 0100 0000 0000 0100 0000 0000 => 5e400400 + * m: 1101 1111 0110 0000 1100 0100 0000 0000 => df60c400 + */ +static void disas_simd_scalar_three_reg_same_fp16(DisasContext *s, + uint32_t insn) +{ + int rd = extract32(insn, 0, 5); + int rn = extract32(insn, 5, 5); + int opcode = extract32(insn, 11, 3); + int rm = extract32(insn, 16, 5); + bool u = extract32(insn, 29, 1); + bool a = extract32(insn, 23, 1); + int fpopcode = opcode | (a << 3) | (u << 4); + TCGv_ptr fpst; + TCGv_i32 tcg_op1; + TCGv_i32 tcg_op2; + TCGv_i32 tcg_res; + + switch (fpopcode) { + case 0x03: /* FMULX */ + case 0x04: /* FCMEQ (reg) */ + case 0x07: /* FRECPS */ + case 0x0f: /* FRSQRTS */ + case 0x14: /* FCMGE (reg) */ + case 0x15: /* FACGE */ + case 0x1a: /* FABD */ + case 0x1c: /* FCMGT (reg) */ + case 0x1d: /* FACGT */ + break; + default: + unallocated_encoding(s); + return; + } + + if (!arm_dc_feature(s, ARM_FEATURE_V8_FP16)) { + unallocated_encoding(s); + } + + if (!fp_access_check(s)) { + return; + } + + fpst = get_fpstatus_ptr(true); + + tcg_op1 = tcg_temp_new_i32(); + tcg_op2 = tcg_temp_new_i32(); + tcg_res = tcg_temp_new_i32(); + + read_vec_element_i32(s, tcg_op1, rn, 0, MO_16); + read_vec_element_i32(s, tcg_op2, rm, 0, MO_16); + + switch (fpopcode) { + case 0x03: /* FMULX */ + gen_helper_advsimd_mulxh(tcg_res, tcg_op1, tcg_op2, fpst); + break; + case 0x04: /* FCMEQ (reg) */ + gen_helper_advsimd_ceq_f16(tcg_res, tcg_op1, tcg_op2, fpst); + break; + case 0x07: /* FRECPS */ + gen_helper_recpsf_f16(tcg_res, tcg_op1, tcg_op2, fpst); + break; + case 0x0f: /* FRSQRTS */ + gen_helper_rsqrtsf_f16(tcg_res, tcg_op1, tcg_op2, fpst); + break; + case 0x14: /* FCMGE (reg) */ + gen_helper_advsimd_cge_f16(tcg_res, tcg_op1, tcg_op2, fpst); + break; + case 0x15: /* FACGE */ + gen_helper_advsimd_acge_f16(tcg_res, tcg_op1, tcg_op2, fpst); + break; + case 0x1a: /* FABD */ + gen_helper_advsimd_subh(tcg_res, tcg_op1, tcg_op2, fpst); + tcg_gen_andi_i32(tcg_res, tcg_res, 0x7fff); + break; + case 0x1c: /* FCMGT (reg) */ + gen_helper_advsimd_cgt_f16(tcg_res, tcg_op1, tcg_op2, fpst); + break; + case 0x1d: /* FACGT */ + gen_helper_advsimd_acgt_f16(tcg_res, tcg_op1, tcg_op2, fpst); + break; + default: + g_assert_not_reached(); + } + + write_fp_sreg(s, rd, tcg_res); + + + tcg_temp_free_i32(tcg_res); + tcg_temp_free_i32(tcg_op1); + tcg_temp_free_i32(tcg_op2); + tcg_temp_free_ptr(fpst); +} + static void handle_2misc_64(DisasContext *s, int opcode, bool u, TCGv_i64 tcg_rd, TCGv_i64 tcg_rn, TCGv_i32 tcg_rmode, TCGv_ptr tcg_fpstatus) @@ -12653,6 +12751,7 @@ static const AArch64DecodeTable data_proc_simd[] = { { 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 }, { 0x00000000, 0x00000000, NULL } }; |