diff options
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate-a64.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index f6a4ce752f..e6addf45f1 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -8489,6 +8489,51 @@ static void handle_2misc_narrow(DisasContext *s, int opcode, bool u, bool is_q, } } +static void handle_2misc_widening(DisasContext *s, int opcode, bool is_q, + int size, int rn, int rd) +{ + /* Handle 2-reg-misc ops which are widening (so each size element + * in the source becomes a 2*size element in the destination. + * The only instruction like this is FCVTL. + */ + int pass; + + if (size == 3) { + /* 32 -> 64 bit fp conversion */ + TCGv_i64 tcg_res[2]; + int srcelt = is_q ? 2 : 0; + + for (pass = 0; pass < 2; pass++) { + TCGv_i32 tcg_op = tcg_temp_new_i32(); + tcg_res[pass] = tcg_temp_new_i64(); + + read_vec_element_i32(s, tcg_op, rn, srcelt + pass, MO_32); + gen_helper_vfp_fcvtds(tcg_res[pass], tcg_op, cpu_env); + tcg_temp_free_i32(tcg_op); + } + 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 { + /* 16 -> 32 bit fp conversion */ + int srcelt = is_q ? 4 : 0; + TCGv_i32 tcg_res[4]; + + for (pass = 0; pass < 4; pass++) { + tcg_res[pass] = tcg_temp_new_i32(); + + read_vec_element_i32(s, tcg_res[pass], rn, srcelt + pass, MO_16); + gen_helper_vfp_fcvt_f16_to_f32(tcg_res[pass], tcg_res[pass], + cpu_env); + } + for (pass = 0; pass < 4; pass++) { + write_vec_element_i32(s, tcg_res[pass], rd, pass, MO_32); + tcg_temp_free_i32(tcg_res[pass]); + } + } +} + static void handle_rev(DisasContext *s, int opcode, bool u, bool is_q, int size, int rn, int rd) { @@ -8830,6 +8875,8 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) handle_2misc_narrow(s, opcode, 0, is_q, size - 1, rn, rd); return; case 0x17: /* FCVTL, FCVTL2 */ + handle_2misc_widening(s, opcode, is_q, size, rn, rd); + return; case 0x18: /* FRINTN */ case 0x19: /* FRINTM */ case 0x38: /* FRINTP */ |