| // Syscall hooks for Sanitizer tools. |
| // They help sanitizers update their knowledge of the process memory state |
| // before and after a system call. |
| #if defined(ADDRESS_SANITIZER) || defined(HWADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || defined(THREAD_SANITIZER) |
| #include <sanitizer/linux_syscall_hooks.h> |
| #define PRE(name, ...) __sanitizer_syscall_pre_##name(__VA_ARGS__) |
| #define POST(name, res, ...) __sanitizer_syscall_post_##name(res, __VA_ARGS__) |
| #else |
| #define PRE(...) |
| #define POST(...) |
| #endif |
| |
| #define __NR_io_setup 206 |
| #define __NR_io_destroy 207 |
| #define __NR_io_getevents 208 |
| #define __NR_io_submit 209 |
| #define __NR_io_cancel 210 |
| |
| #define __syscall_clobber "r11","rcx","memory" |
| #define __syscall "syscall" |
| |
| #define io_syscall1(type,fname,sname,type1,arg1) \ |
| type fname(type1 arg1) \ |
| { \ |
| long __res; \ |
| PRE(sname, arg1); \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##sname),"D" ((long)(arg1)) : __syscall_clobber ); \ |
| POST(sname, __res, arg1); \ |
| return __res; \ |
| } |
| |
| #define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \ |
| type fname(type1 arg1,type2 arg2) \ |
| { \ |
| long __res; \ |
| PRE(sname, arg1, arg2); \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)) : __syscall_clobber ); \ |
| POST(sname, __res, arg1, arg2); \ |
| return __res; \ |
| } |
| |
| #define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \ |
| type fname(type1 arg1,type2 arg2,type3 arg3) \ |
| { \ |
| long __res; \ |
| PRE(sname, arg1, arg2, arg3); \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \ |
| "d" ((long)(arg3)) : __syscall_clobber); \ |
| POST(sname, __res, arg1, arg2, arg3); \ |
| return __res; \ |
| } |
| |
| #define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ |
| type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ |
| { \ |
| long __res; \ |
| PRE(sname, arg1, arg2, arg3, arg4); \ |
| __asm__ volatile ("movq %5,%%r10 ;" __syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \ |
| "d" ((long)(arg3)),"g" ((long)(arg4)) : __syscall_clobber,"r10" ); \ |
| POST(sname, __res, arg1, arg2, arg3, arg4); \ |
| return __res; \ |
| } |
| |
| #define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ |
| type5,arg5) \ |
| type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ |
| { \ |
| long __res; \ |
| PRE(sname, arg1, arg2, arg3, arg4, arg5); \ |
| __asm__ volatile ("movq %5,%%r10 ; movq %6,%%r8 ; " __syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \ |
| "d" ((long)(arg3)),"g" ((long)(arg4)),"g" ((long)(arg5)) : \ |
| __syscall_clobber,"r8","r10" ); \ |
| POST(sname, __res, arg1, arg2, arg3, arg4, arg5); \ |
| return __res; \ |
| } |