1#define __SYSCALL_LL_E(x) \
2((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
3((union { long long ll; long l[2]; }){ .ll = x }).l[1]
4#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))
5
6#ifdef __thumb__
7
8/* Avoid use of r7 in asm constraints when producing thumb code,
9 * since it's reserved as frame pointer and might not be supported. */
10#define __ASM____R7__
11#define __asm_syscall(...) do { \
12 __asm__ __volatile__ ( "mov %1,r7 ; mov r7,%2 ; svc 0 ; mov r7,%1" \
13 : "=r"(r0), "=&r"((int){0}) : __VA_ARGS__ : "memory"); \
14 return r0; \
15 } while (0)
16
17#else
18
19#define __ASM____R7__ __asm__("r7")
20#define __asm_syscall(...) do { \
21 __asm__ __volatile__ ( "svc 0" \
22 : "=r"(r0) : __VA_ARGS__ : "memory"); \
23 return r0; \
24 } while (0)
25#endif
26
27/* For thumb2, we can allow 8-bit immediate syscall numbers, saving a
28 * register in the above dance around r7. Does not work for thumb1 where
29 * only movs, not mov, supports immediates, and we can't use movs because
30 * it doesn't support high regs. */
31#ifdef __thumb2__
32#define R7_OPERAND "rI"(r7)
33#else
34#define R7_OPERAND "r"(r7)
35#endif
36
37static inline long __syscall0(long n)
38{
39 register long r7 __ASM____R7__ = n;
40 register long r0 __asm__("r0");
41 __asm_syscall(R7_OPERAND);
42}
43
44static inline long __syscall1(long n, long a)
45{
46 register long r7 __ASM____R7__ = n;
47 register long r0 __asm__("r0") = a;
48 __asm_syscall(R7_OPERAND, "0"(r0));
49}
50
51static inline long __syscall2(long n, long a, long b)
52{
53 register long r7 __ASM____R7__ = n;
54 register long r0 __asm__("r0") = a;
55 register long r1 __asm__("r1") = b;
56 __asm_syscall(R7_OPERAND, "0"(r0), "r"(r1));
57}
58
59static inline long __syscall3(long n, long a, long b, long c)
60{
61 register long r7 __ASM____R7__ = n;
62 register long r0 __asm__("r0") = a;
63 register long r1 __asm__("r1") = b;
64 register long r2 __asm__("r2") = c;
65 __asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2));
66}
67
68static inline long __syscall4(long n, long a, long b, long c, long d)
69{
70 register long r7 __ASM____R7__ = n;
71 register long r0 __asm__("r0") = a;
72 register long r1 __asm__("r1") = b;
73 register long r2 __asm__("r2") = c;
74 register long r3 __asm__("r3") = d;
75 __asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2), "r"(r3));
76}
77
78static inline long __syscall5(long n, long a, long b, long c, long d, long e)
79{
80 register long r7 __ASM____R7__ = n;
81 register long r0 __asm__("r0") = a;
82 register long r1 __asm__("r1") = b;
83 register long r2 __asm__("r2") = c;
84 register long r3 __asm__("r3") = d;
85 register long r4 __asm__("r4") = e;
86 __asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4));
87}
88
89static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
90{
91 register long r7 __ASM____R7__ = n;
92 register long r0 __asm__("r0") = a;
93 register long r1 __asm__("r1") = b;
94 register long r2 __asm__("r2") = c;
95 register long r3 __asm__("r3") = d;
96 register long r4 __asm__("r4") = e;
97 register long r5 __asm__("r5") = f;
98 __asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5));
99}
100
101#define SYSCALL_FADVISE_6_ARG
102
103#define SYSCALL_IPC_BROKEN_MODE
104
105#define VDSO_USEFUL
106#define VDSO_CGT32_SYM "__vdso_clock_gettime"
107#define VDSO_CGT32_VER "LINUX_2.6"
108#define VDSO_CGT_SYM "__vdso_clock_gettime64"
109#define VDSO_CGT_VER "LINUX_2.6"
110#define VDSO_CGT_WORKAROUND 1