AMD x86-64 Architecture Programmer's Manual, Volume 4, 128-Bit ...

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AMD64 Technology 26568—Rev. 3.05—September 2003 MXCSR Flags Affected None Exceptions Exception Real Invalid opcode, #UD X X 312 PSUBD Virtual 8086 Protected Cause of Exception X X X X The SSE2 instructions are not supported, as indicated by bit 26 of CPUID standard function 1. The emulate bit (EM) of CR0 was set to 1. X X X The operating-system FXSAVE/FXRSTOR support bit (OSFXSR) of CR4 is cleared to 0. Device not available, #NM X X X The task-switch bit (TS) of CR0 was set to 1. Stack, #SS X X X A memory address exceeded the stack segment limit or was non-canonical. General protection, #GP X X X X A memory address exceeded a data segment limit or was non-canonical. A null data segment was used to reference memory. X X X The memory operand was not aligned on a 16-byte boundary. Page fault, #PF X X A page fault resulted from the execution of the instruction.
26568—Rev. 3.05—September 2003 AMD64 Technology PSUBQ Packed Subtract Quadword Subtracts each packed 64-bit integer value in the second source operand from the corresponding packed 64-bit integer in the first source operand and writes the integer result of each subtraction in the corresponding quadword of the destination (first source). The first source/destination and source operands are an XMM register and another XMM register or 128-bit memory location. Mnemonic Opcode Description PSUBQ xmm1, xmm2/mem128 66 0F FB /r Subtracts packed 64-bit integer values in an XMM register or 128bit memory location from packed 64-bit integer values in another XMM register and writes the result in the destination XMM register. This instruction operates on both signed and unsigned integers. If the result overflows, the carry is ignored (neither the overflow nor carry bit in rFLAGS is set), and only the low-order 64 bits of each result are written in the destination. Related Instructions PSUBB, PSUBD, PSUBSB, PSUBSW, PSUBUSB, PSUBUSW, PSUBW rFLAGS Affected None MXCSR Flags Affected None xmm1 xmm2/mem128 127 64 63 0 subtract subtract 127 64 63 0 psubq-128.eps PSUBQ 313
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