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movss mem, reg example movss [ebp+12],xmm0 means store the right operand in the memory location on the left. The right operand is the bottom. 32 bits of an xmm register. 3
According to the Intel manual on x86 instructions, MOVSS copies the lowest 32 bits of the XMM register. (Each XMM register is 128 bits long.) While the instruction is called "move scalar single-precision floating-point value", you should really treat it as "move a 32-bit value".
Right-click the code and choose "find what addresses this instruction accesses". If it shows more than just the address you used as an example, then it's shared code that affects other things and you'll want to take another approach or something. forum.cheatengine.org/viewtopic.php?t=583376
Conversion instructions. SSE Data movement instructions. This demonstrates moving data into the registers and between the registers. MOVUPS and MOVAPS (aligned version), MOVSS, MOVLPS and MOVHPS can also be used to get values out and into memory. MOVMSKPS can be used after a comparison instruction to
This instruction can be used to move a single-precision floating-point value to and from the low doubleword of an XMM register and a 32-bit memory location, or to move a single-precision floating-point value between the low doublewords of two XMM registers.
29 Jun 2012 movss moves a single 32 bit floating point value to or from an XMM register movsd moves a single 64 bit floating point value. There is no implicit data conversion - unlike the old instructions which converted floating point data to an 80 bit internal format. The instructions follow the standard pattern of having
Operation. //MOVSS instruction when source and destination operands are XMM registers: if(IsXMM(Source) && IsXMM(Destination)) Destination[0..31] = Source[0..31]; //Destination[32..127] remains unchanged //MOVSS instruction when source operand is XMM register and destination operand is memory location: else
movsd, movaps (aligned) movups (unaligned), movapd (aligned) movupd (unaligned), movss xmm0,xmm1, Aligned loads are up to 4x faster, but will crash if given an unaligned address! Stack is always 16-byte aligned specifically for this instruction. Use "align 16" directive for static data. Convert, cvtss2sd cvtss2si cvttss2si
movmskps. MOVMSKPS. extract sign mask from four packed single-precision floating-point values. movss. MOVSS. move scalar single-precision floating-point value between XMM registers or memory. movups. MOVUPS. move four unaligned packed single-precision floating-point values between XMM registers or memory
This instruction can be used to move a single-precision floating-point value to and from the low doubleword of an XMM register and a 32-bit memory location, or to move a single-precision floating-point value between the low doublewords of two XMM registers.
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