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功能要求后的结构
原标题:Stack structure after function call with parameters

我只是想到在<代码>上对一个方案的记忆分配。 C 。 我知道,所有全球和静态变量都储存在一粒中。 此外,这支队伍还储存了所有功能电话。 这里我确实有一个疑问。 Saye 我指的是以下职能:

int ret;
int num = 10;
int arr[3] = {1,2,3};
int *ptr = &arr[0];
ret = giveNumber(num, ptr);

在此,我读到,职能参数“giveNumer ()也将放在同一个栏目中。 但是,它们储存的顺序如何? 如果我登上了 st顶,将首先填满哪一个参数,num/code>或ptr<>/code>?

最佳回答

I know that all the global and static variables are stored in a heap.
No, thats not true.
As per the standard they are stored in implementation defined memory regions, typically the Data segment and the BSS.

If I popped the top of stack, which parameter will be popped first, num or ptr
The order of evaluation of arguments to a function is Unspecified.
So it depends on your compiler implementation. An compiler might evaluate the arguments from:

  • Left to Right or
  • Right to Left or
  • Any other random order

因此,行为和行为;你所看到的命令取决于这一点。

问题回答

加上“Als”已经提到的内容, 多数汇编者关于x<86/em>的编号如下:_cdecl,其中呼吁公约从左派权利的角度评估论点。 在这里更多地学习

http://en.wikibooks.org/wiki/X86_Disassembly/Calling_Conventions#Standard_C_Calling_Conventions





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