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 template <typename T1>
24 static uptr internal_syscall(u64 nr, T1 arg1) {
26 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1) :
27 "rcx", "r11", "memory", "cc");
31 template <typename T1, typename T2>
32 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2) {
34 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
35 "S"((u64)arg2) : "rcx", "r11", "memory", "cc");
39 template <typename T1, typename T2, typename T3>
40 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3) {
42 asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
43 "S"((u64)arg2), "d"((u64)arg3) : "rcx", "r11", "memory", "cc");
47 template <typename T1, typename T2, typename T3, typename T4>
48 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4) {
50 asm volatile("mov %5, %%r10;"
51 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
52 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4) :
53 "rcx", "r11", "r10", "memory", "cc");
57 template <typename T1, typename T2, typename T3, typename T4, typename T5>
58 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
61 asm volatile("mov %5, %%r10;"
63 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
64 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5) :
65 "rcx", "r11", "r10", "r8", "memory", "cc");
69 template <typename T1, typename T2, typename T3, typename T4, typename T5,
71 static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
74 asm volatile("mov %5, %%r10;"
77 "syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
78 "S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5),
79 "r"((u64)arg6) : "rcx", "r11", "r10", "r8", "r9",
84 bool internal_iserror(uptr retval, int *rverrno) {
85 if (retval >= (uptr)-4095) {