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2023-12-16abnormal memory sizes for keylocker instructions are not bugsiximeow
new `does_not_decode_invalid_registers` fuzzer found other bugs! the 384-bit accesses for 128b keylocker instructions are an otherwise-unknown size and had a memory size of `BUG`. they are not bugs. give the memory size a real name.
2023-12-16reword new changelog entriesiximeow
2023-12-15update changelog, bump version number for future publishiximeow
2023-07-241.2.0iximeow
2023-07-24fix handling of lar/lsl source registeriximeow
2023-07-23fix inconsistently-poreted memory access size of vcvt{,t}{sd,si}iximeow
2023-07-23fix + better test cvttsd2si+cvtsd2si (misdecode under 64-bit)iximeow
2023-07-16forward changes along to 32-bit decoder...iximeow
2023-07-08fix v(p)gather situations, get vex tests passing againiximeow
2023-07-04fix some dancing between bank size and RegisterBank enum valuesiximeow
in the process, fixed a decoding bug dealing with a0/a1/a2/a3 movs (respected rex.b when rex.b should have been ignored) this seems to maybe improve runtime ever so slightly, but this is really meant as a cleanup commit more than anything.
2023-03-05add `Opcode::is_jcc`, `Opcode::is_setcc`, and `Opcode::is_cmovcc` helpersiximeow
this request/suggestion comes from [github](https://github.com/iximeow/yaxpeax-x86/issues/29)! thank you!
2023-02-19deprecate `pub fn cs`, which is an intensely embarrassing bug of a functioniximeow
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!
2022-12-24update old yaxpeax-arch versions in ffi crates to compatible versionsiximeow
2022-12-03include typo fixes in the changelog!iximeow
2022-12-03describe optimizations included in 1.1.5iximeow
2022-04-30support 0x9a callf in 16/32-bit modesiximeow
2022-04-24fix a few issues preventing no-std builds from ... buildingiximeow
this includes a `Makefile` that exercises the various crate configs. most annoyingly, several doc comments needed to grow `#[cfg(feature="fmt")]` blocks so docs continue to build with that feature enabled or disabled. carved out a way to run exhaustive tests; they should be written as `#[ignore]`, and then the makefile will run even ignored tests on the expectation that this will run the exhaustive (but slower) suite. exhaustive tests are not yet written. they'll probably involve spanning 4 byte sequences from 0 to 2^32-1.
2022-01-12fuzz DisplayStyle::C and fix corresponding issues1.1.4iximeow
2022-01-02update changelogiximeow
2022-01-02actually include a linkiximeow
2021-12-19prep for 1.1.3 releaseiximeow
actual release is being held until cargo fuzz runs a while without a panic
2021-12-19add in-tree cargo fuzz targets for decode and display implsiximeow
2021-12-19fix incorrect memory size for f30f1e-style nopiximeow
not only did the instruction have wrong data, but if displayed, the formatter would panic.
2021-12-19test that invalid RegSpec constructions panic as expectediximeow
in the process, fix 64-bit rex-byte limit, 32/16-bit mode mask reg limit
2021-12-16displacements are stored as unsigned, but are functionally signed intsiximeow
so multiplying to expand EVEX compressed offsets can overflow, and that needs to be okay.
2021-10-10add `InstructionDisplayer` export to changelogiximeow
2021-10-10support endbr{32,64}iximeow
2021-08-21add `AnnotatingDecoder` note to CHANGELOG and publicize descriptionsiximeow
2021-08-21improve relative branch offset formatting for DisplayStyle::Ciximeow
2021-08-21fix incorrect decoding of 0x9*-series instructions with rex.biximeow
2021-08-21add push/pop/call/ret mem_size fixes to changelogiximeow
2021-08-14update changelogiximeow
2021-07-22fix incorrect decodes with scas and 67-prefixes1.0.4iximeow
2021-07-06fix doc items, add example for use of yaxpeax_x86 by yaxpeax_arch traits1.0.3iximeow
2021-07-04remove stale `! user beware !` line from readme1.0.2iximeow
2021-07-04fix docs link1.0.1iximeow
2021-07-04update changelog for 1.0 release1.0.0iximeow
2021-05-16fix ShowContextual rendering error with stale data and operands, publish 0.2.20.2.2iximeow
2021-05-070.2.10.2.1iximeow
2021-03-23bump to 0.2.0 and write a changelog0.2.0iximeow
2021-01-15support xchg AX/reg0.1.5iximeow
2021-01-15small perf tweaksiximeow
clearing reg_rrr and reg_mmm more efficiently is an extremely small win, but a win read_imm_signed generally should inline well and runs afoul of some heuristic. inlining gets about 8% improved throughput on the (unrealistic) in-repo benchmark it would be great to be able to avoid bounds checks somehow; it looks like they alone are another ~10% of decode time. i'm not sure how to pull that off while retaining the generic iterator parameter. might just not be possible.
2021-01-15fix several missing or invalid decodings among 0f01 opcodesiximeow
* `mwaitx`, `monitorx`, `rdpru`, and `clzero` are now supported * swapgs is no longer decoded in protected mode * rdpkru and wrpkru are no longer decoded if mod bits != 11
2020-11-19fix decoding of rex-prefixed modrm+sib operands selecting index 0b100 and ↵0.1.4iximeow
base 0b101 for memory operands with a base, index, and displacement either the wrong base would be selected (register number ignored, so only `*ax` or `r8*` would be reported), or yaxpeax-x86 would report a base register is present when it is not (`RegIndexBaseScaleDisp` when the operand is actually `RegScaleDisp`) thank you to Evan Johnson for catching and reporting this bug! also bump crate version to 0.1.4 as this will be immediately tagged and released.
2020-10-27fix misdecode of instructions in opcode 0x800.1.3iximeow
2020-08-15add RegSpec constructors, consts, and const fns0.1.2iximeow
2020-08-15add register class constants to allow reasoning about register operands0.1.1iximeow
also bump to 0.1.1
2020-08-09inaugural 0.1.0 release!0.1.0iximeow
add doc comments for public items, record changelog, and lets ship this!!
2020-08-09adjust public interface: public items should all be stableiximeow
`OperandCode` (obviously) wildly varies depending on how i feel on a given week, so it's now hidden to avoid people depending on numerical values of its discriminants. `RegisterBank` got a similar treatment with a new `RegisterClass` struct that's suitable for public use.
2020-08-09add to changelogiximeow