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