Refers to the number of bits that can be processed or transmitted in parallel, or thenumber of bits used for single element in adata format. The term is often applied to thefollowing: microprocessor: indicates the width of theregisters. A 16-bit microprocessor can processdata and memory addresses that are representedby 16 bits. bus : indicates the …
Tag Archives: 64bit
porting first steps asm code to GNU
.global start [extern _k_main] ; _start: call _k_main cli ; hlt ; $as –64 kernel_start.s kernel_start.s: Assembler messages: kernel_start.s:2: Error: junk at end of line, first unrecognized character is `[‘ $
What is a PUSH instruction ?
ABOUT PUSH INSTRUCTION RELATED In 8086, the main stack register is called stack pointer – SP. The stack segment register (SS) is usually used to store information about the memory segment that stores the call stack of currently executed program. SP points to current stack top. By default, the stack grows downward in memory, so …
16 bits into the segment register…(GS)
software | Windows | These instructions read a full pointer from memory and store it in the selected segment register:register pair. The full pointer loads 16 bits into the segment register SS, DS, ES, FS, or GS source : http://pdos.csail.mit.edu/6.828/2008/readings/i386/LGS.htm software |GNU/Linux| (gdb) info registers rax 0xfffffffffffffdfc -516 rbx 0x5dc 1500 rcx 0xffffffffffffffff -1 rdx …