别名:指令指针.指令地址寄存器.程序计数器: 操作:顺序操作(计数器加一).分支操作(计数器修改): The program counter (PC), commonly called the instruction pointer (IP) in Intel x86 and Itanium microprocessors, and sometimes called the instruction address register (IAR),[1] the instruction counte…
Program counter The program is stored in memory with the first instruction at binary address 0000, the second instruction at address 0001, the third at address 0010 and so on. The program counter, which is part of the control unit, counts from 0000…
1Hardware connection When using the EFM32 starter kit to make a JLINK burn, you must connect the connection between the starter kit and the target board correctly. The MCU of EFM32 USES SWD mode to burn and debug, as shown below, the SWD connection c…
3.2 Including the initial parent process, how many processes are created by the program shown in Figure? 答案: 会创建8个进程. 解析:相关知识: fork函数的执行原理 fork函数执行一次, 返回两次,父进程返回子进程的PID, 子进程返回0(至于返回值为什么不同, 这与do_fork函数有关,具体是怎么一回事我还不太清楚).程序中可利用此性质来区别程序的父进程和子进程. 当一个进程执行…
An application binary interface includes linkage structures for interfacing a binary application program to a digital computer. A function in a relocatable shared object module obtains the absolute address of a Global Offset Table (GOT) in the module…
Tool GDB Examining Memory (data or in machine instructions) You can use the command x (for “examine”) to examine memory in any of several formats, independently of your program's data types. x/nfu addr x addr x n, the repeat count The repeat count is…
