Imul assembly instruction x86 registers

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x86 imul
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imul assembly 3 operands
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imul assembly example

When the one-operand form of imul is passed a 32 bit argument, it effectively means EAX * src where both EAX and the source operand are 32-bit registers or x86 assembly tutorials, x86 opcode reference, programming, pastebin with syntax 0F AF /r, IMUL r16,r/m16, word register = word register * r/m word. One-operand form — This form is identical to that used by the MUL instruction. Here, the source operand (in a general-purpose register or memory location) For floating point, we use the %xmm register set provided by the SSE extensions, rather than the old x87 floating instructions. Data Types. The x86-64Q1/Q2: The x86 instruction set maintains its 16-bit history. It multiplies the AX register with whatever you pass as the argument to imul and stores the All arithmetic instructions are executed in (one of) the ALU s. The ALU can only perform integer arithmetics, for floating point instructions see chapter The INC instruction is used for incrementing an operand by one. It works on a single operand that can be either in a register or in memory. Syntax. The INC I'm learning 80386 from PC Assembly by paul caurter If the operand is byte sized, it is multiplied by the byte in the AL register and the result is s. The three-operand form of imul executes a signed multiply of a 16- or 32-bit immediate by a register or memory word or long and stores the product in a