Using x64dbg debugger to analyze xmm registers
Notes:
In this video I demonstrate how to analyze a struct and also to understand the xmm registers.
movss = move scalar single-precision floating-point value
copies the lowest 32 bits (4 bytes/dword) of the xmm register
eg,
movss xmm0, [a] ;load from memory
movsd = move scalar double-precision floating-point value
copies the lowest 64 bits (8 bytes/qword) of the xmm register
eg,
movsd xmm0, qword ptr ds:[7FF64435C3453221]
movapd = move aligned packed double-precision floating-point value
copies one xmm register to another xmm register
eg movapd xmm1, xmm0
ref:
What are xmm registers:
https://en.wikipedia.org/wiki/Streami...
x86 and amd64 instruction reference:
https://www.felixcloutier.com/x86/ind...
Download globalstruct.exe and source code:
https://drive.google.com/drive/folder...
Download x64dbg:
https://x64dbg.com/