1 //===-- sanitizer_syscall_linux_x86_64.inc ----------------------*- C++ -*-===//
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
6 //===----------------------------------------------------------------------===//
8 // Implementations of internal_syscall and internal_iserror for Linux/x86_64.
10 //===----------------------------------------------------------------------===//
12 static uptr internal_syscall(u64 nr) {
14 asm volatile("syscall" : "=a"(retval) : "a"(nr) : "rcx", "r11",
19 template <typename T1>
20 static uptr internal_syscall(u64 nr, T1 arg1) {
22 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1) :
23 "rcx", "r11", "memory", "cc");
27 template <typename T1, typename T2>
28 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2) {
30 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
31 "S"((u64)arg2) : "rcx", "r11", "memory", "cc");
35 template <typename T1, typename T2, typename T3>
36 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3) {
38 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
39 "S"((u64)arg2), "d"((u64)arg3) : "rcx", "r11", "memory", "cc");
43 template <typename T1, typename T2, typename T3, typename T4>
44 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4) {
46 asm volatile("mov %5, %%r10;"
47 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
48 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4) :
49 "rcx", "r11", "r10", "memory", "cc");
53 template <typename T1, typename T2, typename T3, typename T4, typename T5>
54 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
57 asm volatile("mov %5, %%r10;"
59 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
60 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5) :
61 "rcx", "r11", "r10", "r8", "memory", "cc");
65 template <typename T1, typename T2, typename T3, typename T4, typename T5,
67 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
70 asm volatile("mov %5, %%r10;"
73 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
74 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5),
75 "r"((u64)arg6) : "rcx", "r11", "r10", "r8", "r9",
80 bool internal_iserror(uptr retval, int *rverrno) {
81 if (retval >= (uptr)-4095) {