error: ‘PAGE_MASK’ undeclared (first use in this function)

[darkgirl]

https://github.com/iqiyi/xHook/blob/master/docs/overview/android_plt_hook_overview.zh-CN.md
按照这个文章中的步骤操作
编译带 hook 的 main.c 报错

`
main_hook.c: In function ‘hook’:
main_hook.c:9:36: error: ‘PAGE_MASK’ undeclared (first use in this function)
9 | #define PAGE_START(addr) ((addr) & PAGE_MASK)
| ^~~~~~~~~
main_hook.c:40:22: note: in expansion of macro ‘PAGE_START’
40 | mprotect((void *)PAGE_START(addr), PAGE_SIZE, PROT_READ | PROT_WRITE);
| ^~~~~~~~~~
main_hook.c:9:36: note: each undeclared identifier is reported only once for each function it appears in
9 | #define PAGE_START(addr) ((addr) & PAGE_MASK)
| ^~~~~~~~~
main_hook.c:40:22: note: in expansion of macro ‘PAGE_START’
40 | mprotect((void *)PAGE_START(addr), PAGE_SIZE, PROT_READ | PROT_WRITE);
| ^~~~~~~~~~
main_hook.c:40:40: error: ‘PAGE_SIZE’ undeclared (first use in this function)
40 | mprotect((void *)PAGE_START(addr), PAGE_SIZE, PROT_READ | PROT_WRITE);
| ^~~~~~~~~

`
PAGE_MASK 和 PAGE_SIZE 是安卓自带的吗?