90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
//===-- sanitizer_syscall_linux_x86_64.inc ----------------------*- C++ -*-===//
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implementations of internal_syscall and internal_iserror for Linux/x86_64.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define SYSCALL(name) __NR_ ## name
|
|
|
|
static uptr internal_syscall(u64 nr) {
|
|
u64 retval;
|
|
asm volatile("syscall" : "=a"(retval) : "a"(nr) : "rcx", "r11",
|
|
"memory", "cc");
|
|
return retval;
|
|
}
|
|
|
|
template <typename T1>
|
|
static uptr internal_syscall(u64 nr, T1 arg1) {
|
|
u64 retval;
|
|
asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1) :
|
|
"rcx", "r11", "memory", "cc");
|
|
return retval;
|
|
}
|
|
|
|
template <typename T1, typename T2>
|
|
static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2) {
|
|
u64 retval;
|
|
asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
|
|
"S"((u64)arg2) : "rcx", "r11", "memory", "cc");
|
|
return retval;
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3>
|
|
static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3) {
|
|
u64 retval;
|
|
asm volatile("syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
|
|
"S"((u64)arg2), "d"((u64)arg3) : "rcx", "r11", "memory", "cc");
|
|
return retval;
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4>
|
|
static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4) {
|
|
u64 retval;
|
|
asm volatile("mov %5, %%r10;"
|
|
"syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
|
|
"S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4) :
|
|
"rcx", "r11", "r10", "memory", "cc");
|
|
return retval;
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5>
|
|
static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
|
|
T5 arg5) {
|
|
u64 retval;
|
|
asm volatile("mov %5, %%r10;"
|
|
"mov %6, %%r8;"
|
|
"syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
|
|
"S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5) :
|
|
"rcx", "r11", "r10", "r8", "memory", "cc");
|
|
return retval;
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5,
|
|
typename T6>
|
|
static uptr internal_syscall(u64 nr, T1 arg1, T2 arg2, T3 arg3, T4 arg4,
|
|
T5 arg5, T6 arg6) {
|
|
u64 retval;
|
|
asm volatile("mov %5, %%r10;"
|
|
"mov %6, %%r8;"
|
|
"mov %7, %%r9;"
|
|
"syscall" : "=a"(retval) : "a"(nr), "D"((u64)arg1),
|
|
"S"((u64)arg2), "d"((u64)arg3), "r"((u64)arg4), "r"((u64)arg5),
|
|
"r"((u64)arg6) : "rcx", "r11", "r10", "r8", "r9",
|
|
"memory", "cc");
|
|
return retval;
|
|
}
|
|
|
|
bool internal_iserror(uptr retval, int *rverrno) {
|
|
if (retval >= (uptr)-4095) {
|
|
if (rverrno)
|
|
*rverrno = -retval;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|