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Code Issues Packages Projects Releases 67 Wiki Activity
223 Commits 11 Branches 71 Tags
ed12a8a24231e8f227c294484b147c54b930f603
Commit Graph
12 Commits
Author SHA1 Message Date
Ryan Houdek ed12a8a242 Fixes x86 instruction decoding. 
In the case of modrm + immediate then the immediate would end up
overwriting Src1 due to the the order of the decoding.
Changes Src1 and Src2 to an array and use a variable to index the array.
Causes a bit of code churn but fixes instruction decoding and allows
easier expansion in the future for instructions that have more sources
like AVX
 2020-03-06 07:56:15 +02:00
Ryan Houdek 9135661861 Fixes edge case when instruction declares 66h and REX.W 
REX.W takes precedence over 66h
 2020-03-06 07:56:15 +02:00
Scott Mansell 7ec68ce815 Fix decoding legacy 66 0F XX insturctions. 2020-03-06 07:56:03 +02:00
Ryan Houdek 7a4d0fbfd3 Fixes bug in 64bit def mod instructions that are in 16bit mode 
These would have been forced to 64bit when they would have wanted to be
operating in 16bit mode.
Fixes that.
 2020-03-06 07:55:59 +02:00
Ryan Houdek e1cecbcfe3 Changes to the new multiblock frontend decoder 
Simple linear scan forward of instruction decoding isn't viable to do.
We need to break up the decoding at the block boundaries.
Otherwise our decoding gets in to the weeds and decodes trash.
 2020-03-06 07:55:37 +02:00
Ryan Houdek 5db8de625a Adds a few new instructions to the X86Tables 
I managed to hit these when messing with Multiblock.
 2020-03-06 07:55:37 +02:00
Ryan Houdek fc8c6c80fb Makes sure in Frontend we say that Entry and ConditionalJump fallthroughs are JumpTargets 2020-03-06 07:55:37 +02:00
Ryan Houdek 012805fd72 Fixes multiblock and a few bugs in RA. 
This makes it so multiblock can now be enabled with the JITs.
Results in a decent performance increase by itself.
 2020-03-06 07:55:35 +02:00
Ryan Houdek 7a43b3150b Fixes bug in frontend displacement calculation 
When an instruction had a literal and also a SIB displacement then this
was causing it to be calculated incorrectly.
 2020-03-06 07:55:21 +02:00
Ryan Houdek 6d92146578 Flesh out X86Tables some more 
Adds an EVEX table and throws some ops in to an unimplemented function.
This is necessary for multiblock in the future where it will see
unsupported instructions but not actually execute them.
 2020-03-06 07:55:18 +02:00
Ryan Houdek 2975161e89 Cleanup the Frontend x86 decoder 
Makes it easier to follow the source
 2020-03-06 07:54:32 +02:00
Ryan Houdek 7252050e42 Initial commit 2020-03-06 07:48:39 +02:00