可能有人解释__declspec（裸体）吗？ [英] Could someone explain __declspec(naked) please?
问题描述
我寻找到移植的Windows到Linux编写的脚本引擎;它是Winamp的可视化平台AVS。我不知道这是否在目前甚至有可能。从我可以告诉code正在采取的C函数的地址 nseel_asm_atan 和 nseel_asm_atan_end 键，将它们存储在表内，它可以code执行过程中参考。
我看了MS的文档，但我不能确定什么 __ declspec（裸）确实。什么是文件中提及的序言和结语code？是与Windows调用约定？这是便携式？使用类似技术的基于Linux的事例？
静态双（* __ ATAN）（双）=＆安培; ATAN;
__declspec（裸体）无效nseel_asm_atan（无效）
{
FUNC1_ENTER * __ nextBlock = __atan（* parm_a）; FUNC_LEAVE
}
__declspec（裸体）无效nseel_asm_atan_end（无效）{}
基本上函数序言设置局部变量堆栈帧和结语需要清除它的照顾。这通常是由编译器自动完成。如果你使用 __ declspec（裸），设立这个堆栈帧将高达你，它给你更多的灵活性。
有许多参考资料：这里 ，这里，<一个href=\"http://stackoverflow.com/questions/886836/writing-naked-functions-with-custom-prolog-and-epilog-$c$c-in-visual-studio\">also这里多。
在GNU gcc编译器还支持裸，但显然不是针对x86：搜索在页面裸（我还没有尝试，看看它是否适用于x86）的
I'm looking into porting a script engine written for Windows to Linux; it's for Winamp's visualization platform AVS. I'm not sure if it's even possible at the moment. From what I can tell the code is taking the addresses of the C functions nseel_asm_atan and nseel_asm_atan_end and storing them inside a table that it can reference during code execution.
I've looked at MS's documentation, but I'm unsure what __declspec(naked) really does. What is prolog and epilog code mentioned in the documentation? Is that related to Windows calling conventions? Is this portable? Know of any Linux-based examples using similar techniques?
static double (*__atan)(double) = &atan;
__declspec ( naked ) void nseel_asm_atan(void)
{
FUNC1_ENTER
*__nextBlock = __atan(*parm_a);
FUNC_LEAVE
}
__declspec ( naked ) void nseel_asm_atan_end(void) {}
Basically the function prologue sets up a stack frame for local variables and the epilogue takes care of cleaning it up. This is usually done automatically by the compiler. If you use __declspec(naked), setting up this stack frame will be up to you so it gives you more flexibility.
There are many references: here , here, also here and more.
The GNU gcc compiler also supports naked, but apparently not for x86: search for "naked" in the page (I haven't tried to see if it works on x86)
这篇关于可能有人解释__declspec（裸体）吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
