diff options
Diffstat (limited to 'target-arm/translate-a64.c')
| -rw-r--r-- | target-arm/translate-a64.c | 124 |
1 files changed, 123 insertions, 1 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index 8d996e9e55..01f6b793fe 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -6580,7 +6580,129 @@ static void gen_min_u32(TCGv_i32 res, TCGv_i32 op1, TCGv_i32 op2) /* Pairwise op subgroup of C3.6.16. */ static void disas_simd_3same_pair(DisasContext *s, uint32_t insn) { - unsupported_encoding(s, insn); + int is_q = extract32(insn, 30, 1); + int u = extract32(insn, 29, 1); + int size = extract32(insn, 22, 2); + int opcode = extract32(insn, 11, 5); + int rm = extract32(insn, 16, 5); + int rn = extract32(insn, 5, 5); + int rd = extract32(insn, 0, 5); + int pass; + + if (size == 3 && !is_q) { + unallocated_encoding(s); + return; + } + + switch (opcode) { + case 0x14: /* SMAXP, UMAXP */ + case 0x15: /* SMINP, UMINP */ + if (size == 3) { + unallocated_encoding(s); + return; + } + break; + case 0x17: + if (u) { + unallocated_encoding(s); + return; + } + break; + default: + g_assert_not_reached(); + } + + /* These operations work on the concatenated rm:rn, with each pair of + * adjacent elements being operated on to produce an element in the result. + */ + if (size == 3) { + TCGv_i64 tcg_res[2]; + + for (pass = 0; pass < 2; pass++) { + TCGv_i64 tcg_op1 = tcg_temp_new_i64(); + TCGv_i64 tcg_op2 = tcg_temp_new_i64(); + int passreg = (pass == 0) ? rn : rm; + + read_vec_element(s, tcg_op1, passreg, 0, MO_64); + read_vec_element(s, tcg_op2, passreg, 1, MO_64); + tcg_res[pass] = tcg_temp_new_i64(); + + /* The only 64 bit pairwise integer op is ADDP */ + assert(opcode == 0x17); + tcg_gen_add_i64(tcg_res[pass], tcg_op1, tcg_op2); + + tcg_temp_free_i64(tcg_op1); + tcg_temp_free_i64(tcg_op2); + } + + for (pass = 0; pass < 2; pass++) { + write_vec_element(s, tcg_res[pass], rd, pass, MO_64); + tcg_temp_free_i64(tcg_res[pass]); + } + } else { + int maxpass = is_q ? 4 : 2; + TCGv_i32 tcg_res[4]; + + for (pass = 0; pass < maxpass; pass++) { + TCGv_i32 tcg_op1 = tcg_temp_new_i32(); + TCGv_i32 tcg_op2 = tcg_temp_new_i32(); + NeonGenTwoOpFn *genfn; + int passreg = pass < (maxpass / 2) ? rn : rm; + int passelt = (is_q && (pass & 1)) ? 2 : 0; + + read_vec_element_i32(s, tcg_op1, passreg, passelt, MO_32); + read_vec_element_i32(s, tcg_op2, passreg, passelt + 1, MO_32); + tcg_res[pass] = tcg_temp_new_i32(); + + switch (opcode) { + case 0x17: /* ADDP */ + { + static NeonGenTwoOpFn * const fns[3] = { + gen_helper_neon_padd_u8, + gen_helper_neon_padd_u16, + tcg_gen_add_i32, + }; + genfn = fns[size]; + break; + } + case 0x14: /* SMAXP, UMAXP */ + { + static NeonGenTwoOpFn * const fns[3][2] = { + { gen_helper_neon_pmax_s8, gen_helper_neon_pmax_u8 }, + { gen_helper_neon_pmax_s16, gen_helper_neon_pmax_u16 }, + { gen_max_s32, gen_max_u32 }, + }; + genfn = fns[size][u]; + break; + } + case 0x15: /* SMINP, UMINP */ + { + static NeonGenTwoOpFn * const fns[3][2] = { + { gen_helper_neon_pmin_s8, gen_helper_neon_pmin_u8 }, + { gen_helper_neon_pmin_s16, gen_helper_neon_pmin_u16 }, + { gen_min_s32, gen_min_u32 }, + }; + genfn = fns[size][u]; + break; + } + default: + g_assert_not_reached(); + } + + genfn(tcg_res[pass], tcg_op1, tcg_op2); + + tcg_temp_free_i32(tcg_op1); + tcg_temp_free_i32(tcg_op2); + } + + for (pass = 0; pass < maxpass; pass++) { + write_vec_element_i32(s, tcg_res[pass], rd, pass, MO_32); + tcg_temp_free_i32(tcg_res[pass]); + } + if (!is_q) { + clear_vec_high(s, rd); + } + } } /* Floating point op subgroup of C3.6.16. */ |