From 6c0946d0d28d787b166cae3c2ebc2cb309c4f5a2 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 12 Feb 2020 16:20:56 +0100 Subject: x86: correct VFPCLASSP{S,D} operand size handling With AVX512VL disabled (e.g. when writing code for the Knights family of processors) these insns aren't ambiguous when used with a memory source, and hence should be accepted without suffix or operand size specifier. When AVX512VL is enabled, to be consistent with this as well as other ambiguous operand size handling it would seem better to just warn about the ambiguity in AT&T mode, and still default to 512-bit operands (on the assumption that the code may have been written without AVX512VL in mind yet), but it was requested to leave AT&T syntax mode alone here. --- opcodes/i386-opc.tbl | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'opcodes/i386-opc.tbl') diff --git a/opcodes/i386-opc.tbl b/opcodes/i386-opc.tbl index 7e28e71..30ac416 100644 --- a/opcodes/i386-opc.tbl +++ b/opcodes/i386-opc.tbl @@ -4515,12 +4515,14 @@ vextracti64x2, 3, 0x6639, None, 1, CpuAVX512DQ, Modrm|MaskingMorZ|VexOpcode=2|Ve vinsertf64x2, 4, 0x6618, None, 1, CpuAVX512DQ, Modrm|Masking=3|VexOpcode=2|VexVVVV=1|VexW=2|Disp8MemShift=4|CheckRegSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegXMM|Unspecified|BaseIndex, RegYMM|RegZMM, RegYMM|RegZMM } vinserti64x2, 4, 0x6638, None, 1, CpuAVX512DQ, Modrm|Masking=3|VexOpcode=2|VexVVVV=1|VexW=2|Disp8MemShift=4|CheckRegSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegXMM|Unspecified|BaseIndex, RegYMM|RegZMM, RegYMM|RegZMM } -vfpclasspd, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|Masking=2|VexOpcode=2|VexW=2|Broadcast|Disp8ShiftVL|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegXMM|RegYMM|RegZMM|Qword|BaseIndex, RegMask } +vfpclasspd, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|Masking=2|VexOpcode=2|VexW=2|Broadcast|Disp8ShiftVL|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ATTSyntax, { Imm8, RegXMM|RegYMM|RegZMM|Qword|BaseIndex, RegMask } +vfpclasspd, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|Masking=2|VexOpcode=2|VexW=2|Broadcast|Disp8ShiftVL|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|IntelSyntax, { Imm8, RegXMM|RegYMM|RegZMM|Qword|Unspecified|BaseIndex, RegMask } vfpclasspdz, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|EVex=1|Masking=2|VexOpcode=2|VexW=2|Broadcast|Disp8MemShift=6|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegZMM|Qword|Unspecified|BaseIndex, RegMask } vfpclasspdx, 3, 0x6666, None, 1, CpuAVX512DQ|CpuAVX512VL, Modrm|EVex=2|Masking=2|VexOpcode=2|VexW=2|Broadcast|Disp8MemShift=4|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegXMM|Qword|Unspecified|BaseIndex, RegMask } vfpclasspdy, 3, 0x6666, None, 1, CpuAVX512DQ|CpuAVX512VL, Modrm|EVex=3|Masking=2|VexOpcode=2|VexW=2|Broadcast|Disp8MemShift=5|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegYMM|Qword|Unspecified|BaseIndex, RegMask } -vfpclassps, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|Masking=2|VexOpcode=2|VexW=1|Broadcast|Disp8ShiftVL|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegXMM|RegYMM|RegZMM|Dword|BaseIndex, RegMask } +vfpclassps, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|Masking=2|VexOpcode=2|VexW=1|Broadcast|Disp8ShiftVL|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ATTSyntax, { Imm8, RegXMM|RegYMM|RegZMM|Dword|BaseIndex, RegMask } +vfpclassps, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|Masking=2|VexOpcode=2|VexW=1|Broadcast|Disp8ShiftVL|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|IntelSyntax, { Imm8, RegXMM|RegYMM|RegZMM|Dword|Unspecified|BaseIndex, RegMask } vfpclasspsz, 3, 0x6666, None, 1, CpuAVX512DQ, Modrm|EVex=1|Masking=2|VexOpcode=2|VexW=1|Broadcast|Disp8MemShift=6|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegZMM|Dword|Unspecified|BaseIndex, RegMask } vfpclasspsx, 3, 0x6666, None, 1, CpuAVX512DQ|CpuAVX512VL, Modrm|EVex=2|Masking=2|VexOpcode=2|VexW=1|Broadcast|Disp8MemShift=4|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegXMM|Dword|Unspecified|BaseIndex, RegMask } vfpclasspsy, 3, 0x6666, None, 1, CpuAVX512DQ|CpuAVX512VL, Modrm|EVex=3|Masking=2|VexOpcode=2|VexW=1|Broadcast|Disp8MemShift=5|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Imm8, RegYMM|Dword|Unspecified|BaseIndex, RegMask } -- cgit v1.1