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[binutils][arm] Update the decoding of MVE VMOV, VMVN

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This patch updates the decoding of the VMOV and VMVN instructions which depend on cmode.
Previously VMOV and VMVN with cmode 1101 were not allowed.
The cmode changes also required updating of the MVE conflict checking.
Now instructions with opcodes 0xef800d50 and 0xef800e70 correctly get decoded as VMOV
and VMVN, respectively.

2019-11-12  Mihail Ionescu  <mihail.ionescu@arm.com>

	* opcodes/arm-dis.c (mve_opcodes): Enable VMOV imm to vec with
	cmode 1101.
	(is_mve_encoding_conflict): Update cmode conflict checks for
	MVE_VMVN_IMM.

2019-11-12  Mihail Ionescu  <mihail.ionescu@arm.com>

	* gas/config/tc-arm.c (do_neon_mvn): Allow mve_ext cmode=0xd.
	* testsuite/gas/arm/mve-vmov-vmvn-vorr-vbic.s: New test.
	* testsuite/gas/arm/mve-vmov-vmvn-vorr-vbic.d: Likewise.
This commit is contained in:
Mihail Ionescu
2019-11-12 13:55:37 +00:00
committed by Kyrylo Tkachov
parent f439988037
commit ce760a7620
6 changed files with 112 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
opcodes/arm-dis.c
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@ -2842,10 +2842,15 @@ static const struct mopcode32 mve_opcodes[] =
"vsri%v.%19-21s\t%13-15,22Q, %1-3,5Q, #%16-18d"},
/* Vector VMOV immediate to vector,
cmode == 11x1 -> VMVN which is UNDEFINED
for such a cmode. */
undefinded for cmode == 1111 */
{ARM_FEATURE_COPROC (FPU_MVE),
MVE_VMVN_IMM, 0xef800d50, 0xefb81dd0, UNDEFINED_INSTRUCTION},
MVE_VMVN_IMM, 0xef800f70, 0xefb81ff0, UNDEFINED_INSTRUCTION},
/* Vector VMOV immediate to vector,
cmode == 1101 */
{ARM_FEATURE_COPROC (FPU_MVE),
MVE_VMOV_IMM_TO_VEC, 0xef800d50, 0xefb81fd0,
"vmov%v.%5,8-11s\t%13-15,22Q, %E"},
/* Vector VMOV immediate to vector. */
{ARM_FEATURE_COPROC (FPU_MVE),
@ -5664,11 +5669,11 @@ is_mve_encoding_conflict (unsigned long given,
{
unsigned long cmode = arm_decode_field (given, 8, 11);
if ((cmode & 9) == 1)
if (cmode == 0xe)
return TRUE;
else if ((cmode & 5) == 1)
else if ((cmode & 0x9) == 1)
return TRUE;
else if ((cmode & 0xe) == 0xe)
else if ((cmode & 0xd) == 9)
return TRUE;
else
return FALSE;