1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
#ifndef KMI_TESTS_ARCH_RISCV64_SYSCALL_H
#define KMI_TESTS_ARCH_RISCV64_SYSCALL_H
#include <kmi/syscalls.h>
#include <kmi/attrs.h>
static inline struct sys_ret syscall(size_t n,
long arg0, long arg1, long arg2, long arg3,
long arg4,
long arg5)
{
register long a0 __asm__ ("a0") = arg0;
register long a1 __asm__ ("a1") = arg1;
register long a2 __asm__ ("a2") = arg2;
register long a3 __asm__ ("a3") = arg3;
register long a4 __asm__ ("a4") = arg4;
register long a5 __asm__ ("a5") = arg5;
#define OUTPUTS "+r" (a0), "=r" (a1), "=r" (a2), "=r" (a3), "=r" (a4), "=r" (a5)
if (n == 1)
__asm__ volatile ("ecall" : OUTPUTS : "r" (a0));
else if (n == 2)
__asm__ volatile ("ecall" : OUTPUTS : "r" (a0), "r" (a1));
else if (n == 3)
__asm__ volatile ("ecall" : OUTPUTS : "r" (a0), "r" (a1),
"r" (a2));
else if (n == 4)
__asm__ volatile ("ecall" : OUTPUTS
: "r" (a0), "r" (a1), "r" (a2), "r" (a3));
else if (n == 5)
__asm__ volatile ("ecall" : OUTPUTS
: "r" (a0), "r" (a1), "r" (a2), "r" (a3),
"r" (a4));
else if (n == 6)
__asm__ volatile ("ecall" : OUTPUTS
: "r" (a0), "r" (a1), "r" (a2), "r" (a3),
"r" (a4), "r" (a5));
#undef OUTPUTS
return (struct sys_ret){a0, a1, a2, a3, a4, a5};
}
#endif /* KMI_TESTS_ARCH_RISCV64_SYSCALL_H */
|
