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
__syscall0(long n)37 static 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
__syscall1(long n,long a)44 static 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
__syscall2(long n,long a,long b)51 static 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
__syscall3(long n,long a,long b,long c)59 static 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
__syscall4(long n,long a,long b,long c,long d)68 static 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
__syscall5(long n,long a,long b,long c,long d,long e)78 static 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
__syscall6(long n,long a,long b,long c,long d,long e,long f)89 static 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