1 //===-- sanitizer_syscall_linux_x86_64.inc ----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Implementations of internal_syscall and internal_iserror for Linux/x86_64.
12 //===----------------------------------------------------------------------===//
14 #define SYSCALL(name) __NR_ ## name
16 static uptr internal_syscall(u64 nr) {
18 asm volatile("syscall" : "=a"(retval) : "a"(nr) : "rcx", "r11",
23 #define internal_syscall_ptr internal_syscall
24 #define internal_syscall64 internal_syscall
26 template <typename T1>
27 static uptr internal_syscall(u64 nr, T1 arg1) {
29 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1) :
30 "rcx", "r11", "memory", "cc");
34 template <typename T1, typename T2>
35 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2) {
37 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
38 "S"((u64)arg2) : "rcx", "r11", "memory", "cc");
42 template <typename T1, typename T2, typename T3>
43 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3) {
45 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
46 "S"((u64)arg2), "d"((u64)arg3) : "rcx", "r11", "memory", "cc");
50 template <typename T1, typename T2, typename T3, typename T4>
51 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4) {
53 asm volatile("mov %5, %%r10;"
54 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
55 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4) :
56 "rcx", "r11", "r10", "memory", "cc");
60 template <typename T1, typename T2, typename T3, typename T4, typename T5>
61 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
64 asm volatile("mov %5, %%r10;"
66 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
67 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5) :
68 "rcx", "r11", "r10", "r8", "memory", "cc");
72 template <typename T1, typename T2, typename T3, typename T4, typename T5,
74 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
77 asm volatile("mov %5, %%r10;"
80 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
81 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5),
82 "r"((u64)arg6) : "rcx", "r11", "r10", "r8", "r9",
87 bool internal_iserror(uptr retval, int *rverrno) {
88 if (retval >= (uptr)-4095) {