[Original] _ Assembly _ usage

In Linux kernel, some constant must be used together by C code and javaser.

When you use constant, you cannot give 0x1000ul a simple command because the hacker cannot view this item.

However, C compiler can. So use this GCC feature.

The constant that C compiler sees is 0x1000ul.

In contrast, the number of referers is 0x1000.

6	/* Some constant macros are used in both between ER and
7	* C code. Therefore we cannot annotate them always
8	* 'Ul 'and other type specifiers unilaterally. We
9	* Use the following macros to deal with this.
10	*
11	* Similarly, _ at () will cast an expression with a type in C,
12	* Leave it unchanged in ASM.
13	*/

Ref.

[1] http://code.woboq.org/linux/linux/include/uapi/linux/const.h.html