1 //===-- sanitizer_syscall_linux_arm.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/arm.
12 //===----------------------------------------------------------------------===//
14 #define SYSCALL(name) __NR_ ## name
16 static uptr __internal_syscall(u32 nr) {
17 register u32 r8 asm("r7") = nr;
18 register u32 r0 asm("r0");
25 #define __internal_syscall0(n) \
26 (__internal_syscall)(n)
28 static uptr __internal_syscall(u32 nr, u32 arg1) {
29 register u32 r8 asm("r7") = nr;
30 register u32 r0 asm("r0") = arg1;
37 #define __internal_syscall1(n, a1) \
38 (__internal_syscall)(n, (u32)(a1))
40 static uptr __internal_syscall(u32 nr, u32 arg1, long arg2) {
41 register u32 r8 asm("r7") = nr;
42 register u32 r0 asm("r0") = arg1;
43 register u32 r1 asm("r1") = arg2;
46 : "r"(r8), "0"(r0), "r"(r1)
50 #define __internal_syscall2(n, a1, a2) \
51 (__internal_syscall)(n, (u32)(a1), (long)(a2))
53 static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3) {
54 register u32 r8 asm("r7") = nr;
55 register u32 r0 asm("r0") = arg1;
56 register u32 r1 asm("r1") = arg2;
57 register u32 r2 asm("r2") = arg3;
60 : "r"(r8), "0"(r0), "r"(r1), "r"(r2)
64 #define __internal_syscall3(n, a1, a2, a3) \
65 (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3))
67 static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3,
69 register u32 r8 asm("r7") = nr;
70 register u32 r0 asm("r0") = arg1;
71 register u32 r1 asm("r1") = arg2;
72 register u32 r2 asm("r2") = arg3;
73 register u32 r3 asm("r3") = arg4;
76 : "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3)
80 #define __internal_syscall4(n, a1, a2, a3, a4) \
81 (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4))
83 static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3,
84 u32 arg4, long arg5) {
85 register u32 r8 asm("r7") = nr;
86 register u32 r0 asm("r0") = arg1;
87 register u32 r1 asm("r1") = arg2;
88 register u32 r2 asm("r2") = arg3;
89 register u32 r3 asm("r3") = arg4;
90 register u32 r4 asm("r4") = arg5;
93 : "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4)
97 #define __internal_syscall5(n, a1, a2, a3, a4, a5) \
98 (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4), \
101 static uptr __internal_syscall(u32 nr, u32 arg1, long arg2, long arg3,
102 u32 arg4, long arg5, long arg6) {
103 register u32 r8 asm("r7") = nr;
104 register u32 r0 asm("r0") = arg1;
105 register u32 r1 asm("r1") = arg2;
106 register u32 r2 asm("r2") = arg3;
107 register u32 r3 asm("r3") = arg4;
108 register u32 r4 asm("r4") = arg5;
109 register u32 r5 asm("r5") = arg6;
110 asm volatile("swi #0"
112 : "r"(r8), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5)
116 #define __internal_syscall6(n, a1, a2, a3, a4, a5, a6) \
117 (__internal_syscall)(n, (u32)(a1), (long)(a2), (long)(a3), (long)(a4), \
118 (u32)(a5), (long)(a6))
120 #define __SYSCALL_NARGS_X(a1, a2, a3, a4, a5, a6, a7, a8, n, ...) n
121 #define __SYSCALL_NARGS(...) \
122 __SYSCALL_NARGS_X(__VA_ARGS__, 7, 6, 5, 4, 3, 2, 1, 0, )
123 #define __SYSCALL_CONCAT_X(a, b) a##b
124 #define __SYSCALL_CONCAT(a, b) __SYSCALL_CONCAT_X(a, b)
125 #define __SYSCALL_DISP(b, ...) \
126 __SYSCALL_CONCAT(b, __SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
128 #define internal_syscall(...) __SYSCALL_DISP(__internal_syscall, __VA_ARGS__)
130 #define internal_syscall_ptr internal_syscall
131 #define internal_syscall64 internal_syscall
133 // Helper function used to avoid cobbler errno.
134 bool internal_iserror(uptr retval, int *rverrno) {
135 if (retval >= (uptr)-4095) {