yaxpeax-x86 - yaxpeax x86 decoder

Age	Commit message (Collapse)	Author
20 hours	fix some forms of lss/lfs/lgs having incorrectly-small memory sizes	iximeow

20 hours	protected/real mode lfs/lgs/lss	iximeow

20 hours	pextr/pinsr/insertps/extrps immediate is now u8 instead of i8	iximeow

20 hours	fix seam, user-ipi, {rd,wr}{fs,gs}base instructions decoding outside 64b mode	iximeow

20 hours	add MASM-style formatting support in all modes	iximeow
	this includes a mildly nightmarish bit of test harness to compare against ml.exe/ml64.exe/dumpbin.exe, which in turn chased out a bunch of bugs. yay!
2026-06-21	the weird 64b movq thing was a capstone bug all along?!	iximeow

2026-06-21	fix several instructions' incorrect memory or op2 size	iximeow

2026-06-21	rename rne-sae to rn-sae	iximeow

2026-06-21	Make invalid instruction constructors actually return invalid instructions	Samuel Arnold
	As opposed to nops.
2026-05-26	fix jrcxz/jecxz/jcxz having "two operands"	iximeow

2026-05-25	push/pop width in 16/32-bit modes are receptive to operand width prefix	iximeow

2026-05-25	reject arpl in 16-bit decoding	iximeow

2026-05-25	and some prefix helpers should be pub	iximeow

2026-05-25	j*cxz/pusha/popa alternate size forms	iximeow
	these all existed since forever but the library did not distinguish them and did not provide prefix information for users to tell which had been decoded.
2026-05-25	adapt long-mode behavior support to protected mode and real mode	iximeow
	along the way, fix an error: maskmov is memory read-write. additionally, operand information about {push,pop}a{,d}.
2026-05-25	gpr register size in real/protected mode	iximeow

2026-05-25	disallow 66-prefixed sha1rnds4	iximeow

2026-05-25	pusha/popa/push-imm memory sizes	iximeow

2026-05-25	helpers to create cr0-cr7	iximeow

2026-05-25	working through a bunch of avx512 stuff, regspec constructors are const	iximeow

2026-05-25	pextr*/extractps	iximeow

2026-05-25	report memory access size for "monitor"	iximeow

2026-05-25	maskmov{q,dqu} memory access size	iximeow

2026-05-25	more precise about 0f0d prefetch/nop	iximeow

2026-05-25	fix table management instructions' ({l,s}{g,i,l}dt) mem_size	iximeow
	these instructions, it turns out, have fixed operand size based on CPU execution mode and regardless of prefixes. good to know!
2026-05-25	push/pop for segment registers has implicit memory access	iximeow

2026-05-25	pushf, popf, enter, leave, xlat all have implicit memory access	iximeow
	also add "is_masked" to operand spec
2026-05-25	add initial stats for disasm stats in all modes	iximeow

2026-02-14	type aliases make some of these signatures less egregious..	iximeow

2025-06-01	describe the per-isa extensions a bit better	iximeow

2025-06-01	revise_instruction is the same on all bitnesses, so macro it too	iximeow

2025-06-01	DecodeEverything wasn't useful, no better than InstDecoder::default()??	iximeow

2025-06-01	expand isa feature selection to more bits	iximeow
	this is backed by the new IsaSettings trait. the existing InstDecoders are unchanged, except that they implement this new trait. also add new `DecodeEverything` structs with `IsaSettings` impls that are unconditionally set to permit anything the decoder can be configured to conditionally accept or reject. in the process, add new `_3dnow` flag and stop accepting 3dnow instructions in uarch-specific decoder settings that would not have 3dnow instructions. update AMD microarchitectures and cross-ref chip directory
2024-06-24	rename most operand variants, make them structy rather than tupley	iximeow

2024-06-23	remove selects_cs(), cs() now does the right thing	iximeow

2024-06-23	fix several sources of dead code warnings in various crate configs	iximeow

2024-06-23	remove yaxpeax-x86 safer_unchecked.rs, it is now in yaxpeax-arch	iximeow

2024-06-23	cfg_attr wants feature, not features plural	iximeow

2024-06-23	InstructionTextBuffer for all three modes, adjust fuzzer to match	iximeow

2024-06-23	adapt OperandVisitor and related to real_mode	iximeow

2024-06-23	fix AbsoluteFarAddress being tagged as a memory operand	iximeow

2024-06-23	actually use new can_lock in 32b and 16b modes	iximeow

2024-06-23	port opcode helpers and reordering to 32-bit and 16-bit decoders	iximeow

2024-06-23	add more conditional inlining for 32-bit and 16-bit decoders	iximeow

2023-12-16	fix hreset being disassembled as having second operand of "Nothing"	iximeow
	just report it having one operand...
2023-07-24	fix handling of lar/lsl source register	iximeow

2023-07-23	fix + better test cvttsd2si+cvtsd2si (misdecode under 64-bit)	iximeow

2023-07-16	forward changes along to 16-bit decoder...	iximeow

2023-03-05	add `Opcode::is_jcc`, `Opcode::is_setcc`, and `Opcode::is_cmovcc` helpers	iximeow
	this request/suggestion comes from [github](https://github.com/iximeow/yaxpeax-x86/issues/29)! thank you!
2023-02-19	deprecate `pub fn cs`, which is an intensely embarrassing bug of a function	iximeow
	unlike every other function to test if a particular selector is picked by prefixes, `Prefixes::cs` does not return bool, nor does it check the currently-selected prefix. instead, it modifies the decoded `Prefixes` to set the current prefix to `cs`. this has been a bug all the way since 0.0.1 was released. the function now does nothing, and is marked deprecated. in a future 2.x release, the function will be changed to return `bool` and be in-line with other segment selector-checking functions. in the mean time, a new `Prefixes::selects_cs()` does the correct thing. thank you to @meithecatte who pointed this out in https://github.com/iximeow/yaxpeax-x86/issues/28!