132 lines
4.7 KiB
C++
132 lines
4.7 KiB
C++
//===-- sanitizer_syscall_linux_hexagon.inc ---------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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/hexagon.
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//
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//===----------------------------------------------------------------------===//
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#define SYSCALL(name) __NR_##name
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#define __internal_syscall_LL_E(x) \
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((union { \
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long long ll; \
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long l[2]; \
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}){.ll = x}) \
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.l[0], \
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((union { \
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long long ll; \
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long l[2]; \
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}){.ll = x}) \
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.l[1]
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#define __internal_syscall_LL_O(x) 0, __SYSCALL_LL_E((x))
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#define __asm_syscall(...) \
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do { \
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__asm__ __volatile__("trap0(#1)" : "=r"(r0) : __VA_ARGS__ : "memory"); \
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return r0; \
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} while (0)
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#define __internal_syscall0(n) (__internal_syscall)(n)
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static uptr __internal_syscall(long n) {
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register u32 r6 __asm__("r6") = n;
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register u32 r0 __asm__("r0");
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__asm_syscall("r"(r6));
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}
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#define __internal_syscall1(n, a1) (__internal_syscall)(n, (long)(a1))
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static uptr __internal_syscall(long n, long a) {
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register u32 r6 __asm__("r6") = n;
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register u32 r0 __asm__("r0") = a;
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__asm_syscall("r"(r6), "0"(r0));
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}
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#define __internal_syscall2(n, a1, a2) \
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(__internal_syscall)(n, (long)(a1), (long)(a2))
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static uptr __internal_syscall(long n, long a, long b) {
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register u32 r6 __asm__("r6") = n;
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register u32 r0 __asm__("r0") = a;
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register u32 r1 __asm__("r1") = b;
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__asm_syscall("r"(r6), "0"(r0), "r"(r1));
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}
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#define __internal_syscall3(n, a1, a2, a3) \
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(__internal_syscall)(n, (long)(a1), (long)(a2), (long)(a3))
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static uptr __internal_syscall(long n, long a, long b, long c) {
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register u32 r6 __asm__("r6") = n;
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register u32 r0 __asm__("r0") = a;
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register u32 r1 __asm__("r1") = b;
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register u32 r2 __asm__("r2") = c;
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__asm_syscall("r"(r6), "0"(r0), "r"(r1), "r"(r2));
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}
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#define __internal_syscall4(n, a1, a2, a3, a4) \
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(__internal_syscall)(n, (long)(a1), (long)(a2), (long)(a3), (long)(a4))
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static uptr __internal_syscall(long n, long a, long b, long c, long d) {
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register u32 r6 __asm__("r6") = n;
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register u32 r0 __asm__("r0") = a;
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register u32 r1 __asm__("r1") = b;
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register u32 r2 __asm__("r2") = c;
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register u32 r3 __asm__("r3") = d;
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__asm_syscall("r"(r6), "0"(r0), "r"(r1), "r"(r2), "r"(r3));
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}
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#define __internal_syscall5(n, a1, a2, a3, a4, a5) \
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(__internal_syscall)(n, (long)(a1), (long)(a2), (long)(a3), (long)(a4), \
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(long)(a5))
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static uptr __internal_syscall(long n, long a, long b, long c, long d, long e) {
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register u32 r6 __asm__("r6") = n;
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register u32 r0 __asm__("r0") = a;
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register u32 r1 __asm__("r1") = b;
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register u32 r2 __asm__("r2") = c;
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register u32 r3 __asm__("r3") = d;
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register u32 r4 __asm__("r4") = e;
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__asm_syscall("r"(r6), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4));
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}
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#define __internal_syscall6(n, a1, a2, a3, a4, a5, a6) \
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(__internal_syscall)(n, (long)(a1), (long)(a2), (long)(a3), (long)(a4), \
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(long)(a5), (long)(a6))
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static uptr __internal_syscall(long n, long a, long b, long c, long d, long e,
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long f) {
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register u32 r6 __asm__("r6") = n;
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register u32 r0 __asm__("r0") = a;
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register u32 r1 __asm__("r1") = b;
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register u32 r2 __asm__("r2") = c;
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register u32 r3 __asm__("r3") = d;
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register u32 r4 __asm__("r4") = e;
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register u32 r5 __asm__("r5") = f;
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__asm_syscall("r"(r6), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5));
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}
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#define __SYSCALL_NARGS_X(a1, a2, a3, a4, a5, a6, a7, a8, n, ...) n
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#define __SYSCALL_NARGS(...) \
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__SYSCALL_NARGS_X(__VA_ARGS__, 7, 6, 5, 4, 3, 2, 1, 0, )
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#define __SYSCALL_CONCAT_X(a, b) a##b
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#define __SYSCALL_CONCAT(a, b) __SYSCALL_CONCAT_X(a, b)
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#define __SYSCALL_DISP(b, ...) \
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__SYSCALL_CONCAT(b, __SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
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#define internal_syscall(...) __SYSCALL_DISP(__internal_syscall, __VA_ARGS__)
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// Helper function used to avoid clobbering of errno.
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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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