Movl instruction x86_64

 

 

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movl movq
movl assembly meaning
x86 instruction setmovb x86
movl vs mov
movl vs movb
movl vs movq
x86-64 instruction set

 

 

For instance, the following mov instruction: movl -8(%ebp, %edx, 4), %eax # Full example: load *(ebp + (edx * 4) - 8) into eax movl -4(%ebp), Recall that the processor must fetch instructions from memory before Specifies size via a suffix on the instruction (movb, movw, movl, movq). movl $1, 0x604892 # direct (address is constant value) movl $1, (%rax) # indirect A note about instruction suffixes: many instructions have a suffix ( b movq and movl are variations of the mov command (moving data to a memory location or a register). movq moves 8 bytes starting at the current specified memory Operands are entities operated upon by the instruction. For most instructions, the Solaris x86 assembler mnemonics are the same as movl var, %eax. Instructions with REX prefix change behaviour of 8-bit register parts so that all movl $1, %eax # 32-bit instruction movq $1, %rax # 64-bit instruction.Thus, after movl $-1, %eax , the %rax register has value 0x00000000FFFFFFFF. These instructions move data between registers and memory. MOVLHPS, Move Packed Single-Precision Floating-Point Values Low to High. MOVLPD, Move Low Packed Double-Precision Floating-Point Value. For example, moving a quadword from %rax to %rbx results in the instruction movq %rax, %rbx. Some instructions, like ret, do not use suffixes because there is

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