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target-arm: A64: Add SIMD three-different ABDL instructions 

Implement the absolute-difference instructions in the SIMD
three-different group: SABAL, SABAL2, UABAL, UABAL2, SABDL,
SABDL2, UABDL, UABDL2.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
master
Peter Maydell 2014-01-31 14:47:36 +00:00
parent a08582f41e
commit 0ae39320bd
1 changed files with 33 additions and 2 deletions
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35
target-arm/translate-a64.c
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@ -5602,6 +5602,21 @@ static void handle_3rd_widening(DisasContext *s, int is_q, int is_u, int size,
}
switch (opcode) {
case 5: /* SABAL, SABAL2, UABAL, UABAL2 */
case 7: /* SABDL, SABDL2, UABDL, UABDL2 */
{
TCGv_i64 tcg_tmp1 = tcg_temp_new_i64();
TCGv_i64 tcg_tmp2 = tcg_temp_new_i64();
tcg_gen_sub_i64(tcg_tmp1, tcg_op1, tcg_op2);
tcg_gen_sub_i64(tcg_tmp2, tcg_op2, tcg_op1);
tcg_gen_movcond_i64(is_u ? TCG_COND_GEU : TCG_COND_GE,
tcg_passres,
tcg_op1, tcg_op2, tcg_tmp1, tcg_tmp2);
tcg_temp_free_i64(tcg_tmp1);
tcg_temp_free_i64(tcg_tmp2);
break;
}
case 8: /* SMLAL, SMLAL2, UMLAL, UMLAL2 */
case 10: /* SMLSL, SMLSL2, UMLSL, UMLSL2 */
case 12: /* UMULL, UMULL2, SMULL, SMULL2 */
@ -5640,6 +5655,22 @@ static void handle_3rd_widening(DisasContext *s, int is_q, int is_u, int size,
}
switch (opcode) {
case 5: /* SABAL, SABAL2, UABAL, UABAL2 */
case 7: /* SABDL, SABDL2, UABDL, UABDL2 */
if (size == 0) {
if (is_u) {
gen_helper_neon_abdl_u16(tcg_passres, tcg_op1, tcg_op2);
} else {
gen_helper_neon_abdl_s16(tcg_passres, tcg_op1, tcg_op2);
}
} else {
if (is_u) {
gen_helper_neon_abdl_u32(tcg_passres, tcg_op1, tcg_op2);
} else {
gen_helper_neon_abdl_s32(tcg_passres, tcg_op1, tcg_op2);
}
}
break;
case 8: /* SMLAL, SMLAL2, UMLAL, UMLAL2 */
case 10: /* SMLSL, SMLSL2, UMLSL, UMLSL2 */
case 12: /* UMULL, UMULL2, SMULL, SMULL2 */
@ -5739,10 +5770,10 @@ static void disas_simd_three_reg_diff(DisasContext *s, uint32_t insn)
/* fall through */
case 0:
case 2:
case 5:
case 7:
unsupported_encoding(s, insn);
break;
case 5:
case 7:
case 8:
case 10:
case 12: