139 lines
4.6 KiB
C++
139 lines
4.6 KiB
C++
//===-- sanitizer_syscall_linux_arm.inc -------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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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/arm.
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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(u32 nr) {
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register u32 r8 asm("r7") = nr;
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register u32 r0 asm("r0");
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asm volatile("swi #0"
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: "=r"(r0)
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: "r"(r8)
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: "memory", "cc");
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return r0;
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}
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#define __internal_syscall0(n) \
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(__internal_syscall)(n)
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static uptr __internal_syscall(u32 nr, u32 arg1) {
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register u32 r8 asm("r7") = nr;
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register u32 r0 asm("r0") = arg1;
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asm volatile("swi #0"
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: "=r"(r0)
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: "r"(r8), "0"(r0)
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: "memory", "cc");
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return r0;
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}
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#define __internal_syscall1(n, a1) \
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(__internal_syscall)(n, (u32)(a1))
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static uptr __internal_syscall(u32 nr, u32 arg1, long arg2) {
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register u32 r8 asm("r7") = nr;
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register u32 r0 asm("r0") = arg1;
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register u32 r1 asm("r1") = arg2;
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asm volatile("swi #0"
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: "=r"(r0)
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: "r"(r8), "0"(r0), "r"(r1)
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: "memory", "cc");
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return r0;
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}
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#define __internal_syscall2(n, a1, a2) \
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(__internal_syscall)(n, (u32)(a1), (long)(a2))
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static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3) {
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register u32 r8 asm("r7") = nr;
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register u32 r0 asm("r0") = arg1;
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register u32 r1 asm("r1") = arg2;
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register u32 r2 asm("r2") = arg3;
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asm volatile("swi #0"
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: "=r"(r0)
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: "r"(r8), "0"(r0), "r"(r1), "r"(r2)
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: "memory", "cc");
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return r0;
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}
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#define __internal_syscall3(n, a1, a2, a3) \
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(__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3))
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static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3,
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u32 arg4) {
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register u32 r8 asm("r7") = nr;
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register u32 r0 asm("r0") = arg1;
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register u32 r1 asm("r1") = arg2;
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register u32 r2 asm("r2") = arg3;
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register u32 r3 asm("r3") = arg4;
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asm volatile("swi #0"
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: "=r"(r0)
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: "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3)
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: "memory", "cc");
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return r0;
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}
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#define __internal_syscall4(n, a1, a2, a3, a4) \
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(__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4))
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static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3,
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u32 arg4, long arg5) {
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register u32 r8 asm("r7") = nr;
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register u32 r0 asm("r0") = arg1;
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register u32 r1 asm("r1") = arg2;
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register u32 r2 asm("r2") = arg3;
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register u32 r3 asm("r3") = arg4;
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register u32 r4 asm("r4") = arg5;
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asm volatile("swi #0"
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: "=r"(r0)
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: "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4)
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: "memory", "cc");
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return r0;
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}
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#define __internal_syscall5(n, a1, a2, a3, a4, a5) \
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(__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4), \
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(u32)(a5))
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static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3,
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u32 arg4, long arg5, long arg6) {
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register u32 r8 asm("r7") = nr;
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register u32 r0 asm("r0") = arg1;
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register u32 r1 asm("r1") = arg2;
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register u32 r2 asm("r2") = arg3;
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register u32 r3 asm("r3") = arg4;
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register u32 r4 asm("r4") = arg5;
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register u32 r5 asm("r5") = arg6;
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asm volatile("swi #0"
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: "=r"(r0)
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: "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5)
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: "memory", "cc");
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return r0;
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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, (u32)(a1), (long)(a2), (long)(a3), (long)(a4), \
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(u32)(a5), (long)(a6))
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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 cobbler 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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