ARM frame pointer
GCC 里经常碰到的option: -fomit-frame-pointer，意思是： Don’t keep the frame pointer in a register for functions that don’t need one. This avoids the instructions to save, set up and restore frame pointers; it also makes an extra register available in many functions. It also makes debugging impossible on some machines. 其实就是在x86编译的时候忽略EBP， 在arm编译时忽略r11。这两个东东其实就是栈基地...
by muddogxp - Linux文档专区 - 2008-07-23 16:46:21 阅读（1262） 回复（0）
Hi all, I found the following function, which is used to remove the head of a linked list. void RemoveHead(node **head) { node *temp; if (head && *head) { /* Corrected code */ temp = (*head)->next; free(*head); *head = temp; } } 1. Why is the purpose of 'head' in the 'if' condition? Shouldn't '*head' suffice? 2. This function has an argument, which is a po...
#Lable demonstration. from Tkinter import * class LabelDemo( frame ): """Demonstrate Labels""" def _init_ ( self ): """Create three Labels and pack them""" frame._init_( self ) & initializes frame object # frame file available space self.pack(expand = YES. file = BOTH ) self.Label1 = Label( self, text = "Label with text" ) # resize frame t...
See the registration functiion of notifier chain: static int notifier_chain_register(struct notifier_block **nl, struct notifier_block *n) { while ((*nl) != NULL) { if (n->priority > (*nl)->priority) break; nl = &((*nl)->next); } n->next = *nl; rcu_assign_pointer(*nl, n); return 0; } Why the first parameter is of type pointer to pointer, ...
pointer是指针的意思吧 point是点的意思，偶在学习和工作中接触到他们的机会都比较多 上周去买了本c和指针，现在每天早上起来看看，感觉还不错，每个男人都喜欢梦想，偶也不例外。 最近一周在看《金石奇缘》－－tvb新作，呵呵，可能只有15集哦，我想，港台剧看的不少，特别经典的如《流金岁月》…… 的确看的非常舒服，看多了不免想感慨一下，听的最多的一句是“其实做人呢，最重要是开心”，所谓见仁见智，我在每部港剧中都...
A.7.1 pointer Generation If the type of an expression or subexpression is ``array of T,'' for some type T, then the value of the expression is a pointer to the first object in the array, and the type of the expression is altered to ``pointer to T.'' This conversion does not take place if the expression is in the operand of the unary & operator, or of ++, --, sizeof, or as the left operand of an as...
我在用kgdb调试内核时，查看堆栈出现Previous frame inner to this frame(corrupt stack?)，该如何解决
现今，见到的比较多的ethernet frames有如下的四种： a. Ethernet II b. Ethernet 802.3 (Raw), aka Novell Ethernet c. Ethernet 802.3/802.2 by IEEE d. Ethernet SNAP ---------------------------------------------------------------------------------| Preamble | Dest MAC | Src MAC | Length/EtherType | Data | FCS |--------------------------------------------------------------------------...
