binutils-gdb

Tree: 5890af36e5

Author	SHA1	Message	Date
Jan Beulich	e6cfa893f4	x86: share yet more VEX table entries with EVEX decoding On top of prior similar work more opportunities have appeared in the meantime. Note that this also happens to address the prior lack of decoding of EVEX.L'L for VMOV{L,H}P{S,D} and VMOV{LH,HL}PS.	5 years ago
Jan Beulich	740a1e7911	x86: reduce AVX512 FP set of insns decoded through vex_w_table[] Like for AVX512-FP16, there's not that many FP insns where going through this table is easier / cheaper than using suitable macros. Utilize %XS and %XD more to eliminate a fair number of table entries. While doing this I noticed a few anomalies. Where lines get touched / moved anyway, these are being addressed right here: - vmovshdup used EXx for its 2nd operand, thus displaying seemingly valid broadcast when EVEX.b is set with a memory operand; use EXEvexXNoBcst instead just like vmovsldup already does - vmovlhps used EXx for its 3rd operand, when all sibling entries use EXq; switch to EXq there for consistency (the two differ only for memory operands)	5 years ago
Jan Beulich	c1d66d5f24	x86: drop xmm_m{b,w,d,q}_mode They're effectively redundant with {b,w,d,q}_mode.	5 years ago
Jan Beulich	fc681dd6a1	x86: re-arrange order of decode for various EVEX opcodes The order of decodes influences the overall number of table entries. Reduce table size quite a bit by first decoding few-alternatives attributes common to all valid leaves. This also adds a PREFIX_DATA `7531c61332` ("x86: simplify decode of opcodes valid with (embedded) 66 prefix only") missed to apply to vbroadcastf64x4.	6 years ago
Jan Beulich	464d2b6568	x86: drop Rdq, Rd, and MaskR Rdq, Rd, and MaskR can be replaced by Edq, Ed / Rm, and MaskE respectively, as OP_R() doesn't enforce ModRM.mod == 3, and hence where MOD matters but hasn't been decoded yet it needs to be anyway. (The case of converting to Rm is temporary until a subsequent change.)	6 years ago
Jan Beulich	7531c61332	x86: simplify decode of opcodes valid with (embedded) 66 prefix only The only valid (embedded or explicit) prefix being the data size one (which is a fairly common pattern), avoid going through prefix_table[]. Instead extend the "required prefix" logic to also handle PREFIX_DATA alone in a table entry, now used to identify this case. This requires moving the (adjusted) ->prefix_requirement logic ahead of the printing of stray prefixes, as the latter needs to observe the new setting of PREFIX_DATA in used_prefixes. Also add PREFIX_OPCODE on related entries when previously there was mistakenly no decode step through prefix_table[].	6 years ago
Jan Beulich	bc152a17ff	x86: most VBROADCAST{F,I}{32,64}x* only accept memory operands VBROADCAST{F,I}32x2 are the only exceptions here.	6 years ago
Jan Beulich	97e6786a6e	x86: utilize X macro in EVEX decoding For major opcodes allowing only packed FP kinds of operands, i.e. the ones where legacy and AVX decoding uses the X macro, we can do so for AVX512 as well, by attaching to the checking logic the "EVEX.W must match presence of embedded 66 prefix" rule. (Encodings not following this general pattern simply may not gain the PREFIX_OPCODE attribute.) Note that testing of the thus altered decoding has already been put in place by "x86: correct decoding of packed-FP-only AVX encodings". This can also be at least partly applied to scalar-FP-only insns (i.e. V{,U}COMIS{S,D}) as well as the vector-FP forms of insns also allowing scalar encodings (e.g. VADDP{S,D}). Take the opportunity and also fix EVEX-encoded VMOVNTP{S,D} as well as to-memory forms of VMOV{L,H}PS and both forms of VMOV{L,H}PD to wrongly disassemble with only register operands.	6 years ago
Jan Beulich	36cc073ef4	x86: remove ModRM.mod decoding layer from AVX512F VMOVS{S,D} Just like their AVX counterparts they can utilize XMVexScalar / EXdVexScalarS / EXqVexScalarS taking care of dropping the middle operand for their memory forms.	7 years ago
H.J. Lu	ad692897c1	i386: Break i386-dis-evex.h into small files Break i386-dis-evex.h into small files such that each file is included just once. * i386-dis-evex.h: Break into ... * i386-dis-evex-len.h: New file. * i386-dis-evex-mod.h: Likewise. * i386-dis-evex-prefix.h: Likewise. * i386-dis-evex-reg.h: Likewise. * i386-dis-evex-w.h: Likewise. * i386-dis.c: Include i386-dis-evex-reg.h, i386-dis-evex-prefix.h, i386-dis-evex.h, i386-dis-evex-len.h, i386-dis-evex-w.h and i386-dis-evex-mod.h.	7 years ago

10 Commits (5890af36e5112bcbb8d7555e63570f68466e6944)