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Commit Graph

6 Commits

Author SHA1 Message Date
Andrei Vlad LUTAS
15e5e2db63 Fixed several RFLAGS setting issues with airthmetic and shift instructions. 2021-02-23 18:11:40 +02:00
Andrei Vlad LUTAS
1eb1c9d0d2 Fixed https://github.com/bitdefender/bddisasm/issues/38. 2021-01-15 19:09:53 +02:00
Andrei Vlad LUTAS
ea28907359 Fix potential division error in bdshemu, when the destination operand is not large enough to hold the result. 2020-08-27 16:25:39 +03:00
Andrei Vlad LUTAS
d61a6fa5dd * INC/DEC do not modify the CF.
* Fixed FXSAVE64, PUSHAD and POPAD emulation - when explicit mnemonics were added for them, emulation support was not added, thus causing emulation to stop when encountering one of these.
2020-08-19 19:14:22 +03:00
Andrei Vlad LUTAS
752bc626c4 Fixed RET with immediate - the immediate is not sign-extended.
Fixed VEX decoding in 32 bit mode - vex.vvvv bit 3 is simply ignored.
Fixed several FMA instructions decoding (L/W flag should be ignored).
Print the 64 bit immediate value in disassembly, instead of the raw immediate (note that the operand always contains the sign-extended, full immediate).
XBEGIN always uses 32/64 bit RIP size (0x66 does not affect its size).
Decode WBINVD even if it's preceded by 0x66/0xF2 prefixes.
Several mnemonic fixes (FXSAVE64, FXRSTOR64, PUSHA/PUSHAD...).
Properly decode VPERMIL2* instructions.
Fixed SSE register decoding when it is encoded in immediate.
Decode SCATTER instructions even though they use the VSIB index as source.
Some disp8 fixes (t1s -> t1s8/t1s16).
SYSCALL/SYSRET are decoded and executed in 32 bit compat modem, even though SDM states they are invalid.
RDPID uses 32/64 bit reg size, never 16.
Various other minor tweaks & fixes.
Re-generated the test files, and added some more, new tests.
2020-07-23 14:08:01 +03:00
Andrei Vlad LUTAS
698ba367a1 Initial commit. 2020-07-21 11:19:18 +03:00