diff options
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate-a64.c | 170 |
1 files changed, 169 insertions, 1 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index 9ca6460325..079c2f7cb2 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -2670,10 +2670,178 @@ static void disas_data_proc_reg(DisasContext *s, uint32_t insn) } } +/* C3.6.22 Floating point compare + * 31 30 29 28 24 23 22 21 20 16 15 14 13 10 9 5 4 0 + * +---+---+---+-----------+------+---+------+-----+---------+------+-------+ + * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | op | 1 0 0 0 | Rn | op2 | + * +---+---+---+-----------+------+---+------+-----+---------+------+-------+ + */ +static void disas_fp_compare(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.23 Floating point conditional compare + * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 3 0 + * +---+---+---+-----------+------+---+------+------+-----+------+----+------+ + * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | cond | 0 1 | Rn | op | nzcv | + * +---+---+---+-----------+------+---+------+------+-----+------+----+------+ + */ +static void disas_fp_ccomp(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.24 Floating point conditional select + * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 0 + * +---+---+---+-----------+------+---+------+------+-----+------+------+ + * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | cond | 1 1 | Rn | Rd | + * +---+---+---+-----------+------+---+------+------+-----+------+------+ + */ +static void disas_fp_csel(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.25 Floating point data-processing (1 source) + * 31 30 29 28 24 23 22 21 20 15 14 10 9 5 4 0 + * +---+---+---+-----------+------+---+--------+-----------+------+------+ + * | M | 0 | S | 1 1 1 1 0 | type | 1 | opcode | 1 0 0 0 0 | Rn | Rd | + * +---+---+---+-----------+------+---+--------+-----------+------+------+ + */ +static void disas_fp_1src(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.26 Floating point data-processing (2 source) + * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 0 + * +---+---+---+-----------+------+---+------+--------+-----+------+------+ + * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | opcode | 1 0 | Rn | Rd | + * +---+---+---+-----------+------+---+------+--------+-----+------+------+ + */ +static void disas_fp_2src(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.27 Floating point data-processing (3 source) + * 31 30 29 28 24 23 22 21 20 16 15 14 10 9 5 4 0 + * +---+---+---+-----------+------+----+------+----+------+------+------+ + * | M | 0 | S | 1 1 1 1 1 | type | o1 | Rm | o0 | Ra | Rn | Rd | + * +---+---+---+-----------+------+----+------+----+------+------+------+ + */ +static void disas_fp_3src(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.28 Floating point immediate + * 31 30 29 28 24 23 22 21 20 13 12 10 9 5 4 0 + * +---+---+---+-----------+------+---+------------+-------+------+------+ + * | M | 0 | S | 1 1 1 1 0 | type | 1 | imm8 | 1 0 0 | imm5 | Rd | + * +---+---+---+-----------+------+---+------------+-------+------+------+ + */ +static void disas_fp_imm(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.29 Floating point <-> fixed point conversions + * 31 30 29 28 24 23 22 21 20 19 18 16 15 10 9 5 4 0 + * +----+---+---+-----------+------+---+-------+--------+-------+------+------+ + * | sf | 0 | S | 1 1 1 1 0 | type | 0 | rmode | opcode | scale | Rn | Rd | + * +----+---+---+-----------+------+---+-------+--------+-------+------+------+ + */ +static void disas_fp_fixed_conv(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* C3.6.30 Floating point <-> integer conversions + * 31 30 29 28 24 23 22 21 20 19 18 16 15 10 9 5 4 0 + * +----+---+---+-----------+------+---+-------+-----+-------------+----+----+ + * | sf | 0 | S | 1 1 1 1 0 | type | 0 | rmode | opc | 0 0 0 0 0 0 | Rn | Rd | + * +----+---+---+-----------+------+---+-------+-----+-------------+----+----+ + */ +static void disas_fp_int_conv(DisasContext *s, uint32_t insn) +{ + unsupported_encoding(s, insn); +} + +/* FP-specific subcases of table C3-6 (SIMD and FP data processing) + * 31 30 29 28 25 24 0 + * +---+---+---+---------+-----------------------------+ + * | | 0 | | 1 1 1 1 | | + * +---+---+---+---------+-----------------------------+ + */ +static void disas_data_proc_fp(DisasContext *s, uint32_t insn) +{ + if (extract32(insn, 24, 1)) { + /* Floating point data-processing (3 source) */ + disas_fp_3src(s, insn); + } else if (extract32(insn, 21, 1) == 0) { + /* Floating point to fixed point conversions */ + disas_fp_fixed_conv(s, insn); + } else { + switch (extract32(insn, 10, 2)) { + case 1: + /* Floating point conditional compare */ + disas_fp_ccomp(s, insn); + break; + case 2: + /* Floating point data-processing (2 source) */ + disas_fp_2src(s, insn); + break; + case 3: + /* Floating point conditional select */ + disas_fp_csel(s, insn); + break; + case 0: + switch (ctz32(extract32(insn, 12, 4))) { + case 0: /* [15:12] == xxx1 */ + /* Floating point immediate */ + disas_fp_imm(s, insn); + break; + case 1: /* [15:12] == xx10 */ + /* Floating point compare */ + disas_fp_compare(s, insn); + break; + case 2: /* [15:12] == x100 */ + /* Floating point data-processing (1 source) */ + disas_fp_1src(s, insn); + break; + case 3: /* [15:12] == 1000 */ + unallocated_encoding(s); + break; + default: /* [15:12] == 0000 */ + /* Floating point <-> integer conversions */ + disas_fp_int_conv(s, insn); + break; + } + break; + } + } +} + +static void disas_data_proc_simd(DisasContext *s, uint32_t insn) +{ + /* Note that this is called with all non-FP cases from + * table C3-6 so it must UNDEF for entries not specifically + * allocated to instructions in that table. + */ + unsupported_encoding(s, insn); +} + /* C3.6 Data processing - SIMD and floating point */ static void disas_data_proc_simd_fp(DisasContext *s, uint32_t insn) { - unsupported_encoding(s, insn); + if (extract32(insn, 28, 1) == 1 && extract32(insn, 30, 1) == 0) { + disas_data_proc_fp(s, insn); + } else { + /* SIMD, including crypto */ + disas_data_proc_simd(s, insn); + } } /* C3.1 A64 instruction index by encoding */ |