root / tests / hello-arm.c @ f97572e5
History | View | Annotate | Download (3.1 kB)
1 |
#define __NR_SYSCALL_BASE 0x900000 |
---|---|
2 |
#define __NR_exit1 (__NR_SYSCALL_BASE+ 1) |
3 |
#define __NR_write (__NR_SYSCALL_BASE+ 4) |
4 |
|
5 |
#define __sys2(x) #x |
6 |
#define __sys1(x) __sys2(x)
|
7 |
|
8 |
#ifndef __syscall
|
9 |
#define __syscall(name) "swi\t" __sys1(__NR_##name) "\n\t" |
10 |
#endif
|
11 |
|
12 |
#define __syscall_return(type, res) \
|
13 |
do { \
|
14 |
return (type) (res); \
|
15 |
} while (0) |
16 |
|
17 |
#define _syscall0(type,name) \
|
18 |
type name(void) { \
|
19 |
long __res; \
|
20 |
__asm__ __volatile__ ( \ |
21 |
__syscall(name) \ |
22 |
"mov %0,r0" \
|
23 |
:"=r" (__res) : : "r0","lr"); \ |
24 |
__syscall_return(type,__res); \ |
25 |
} |
26 |
|
27 |
#define _syscall1(type,name,type1,arg1) \
|
28 |
type name(type1 arg1) { \ |
29 |
long __res; \
|
30 |
__asm__ __volatile__ ( \ |
31 |
"mov\tr0,%1\n\t" \
|
32 |
__syscall(name) \ |
33 |
"mov %0,r0" \
|
34 |
: "=r" (__res) \
|
35 |
: "r" ((long)(arg1)) \ |
36 |
: "r0","lr"); \ |
37 |
__syscall_return(type,__res); \ |
38 |
} |
39 |
|
40 |
#define _syscall2(type,name,type1,arg1,type2,arg2) \
|
41 |
type name(type1 arg1,type2 arg2) { \ |
42 |
long __res; \
|
43 |
__asm__ __volatile__ ( \ |
44 |
"mov\tr0,%1\n\t" \
|
45 |
"mov\tr1,%2\n\t" \
|
46 |
__syscall(name) \ |
47 |
"mov\t%0,r0" \
|
48 |
: "=r" (__res) \
|
49 |
: "r" ((long)(arg1)),"r" ((long)(arg2)) \ |
50 |
: "r0","r1","lr"); \ |
51 |
__syscall_return(type,__res); \ |
52 |
} |
53 |
|
54 |
|
55 |
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
|
56 |
type name(type1 arg1,type2 arg2,type3 arg3) { \ |
57 |
long __res; \
|
58 |
__asm__ __volatile__ ( \ |
59 |
"mov\tr0,%1\n\t" \
|
60 |
"mov\tr1,%2\n\t" \
|
61 |
"mov\tr2,%3\n\t" \
|
62 |
__syscall(name) \ |
63 |
"mov\t%0,r0" \
|
64 |
: "=r" (__res) \
|
65 |
: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)) \ |
66 |
: "r0","r1","r2","lr"); \ |
67 |
__syscall_return(type,__res); \ |
68 |
} |
69 |
|
70 |
|
71 |
#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
|
72 |
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ |
73 |
long __res; \
|
74 |
__asm__ __volatile__ ( \ |
75 |
"mov\tr0,%1\n\t" \
|
76 |
"mov\tr1,%2\n\t" \
|
77 |
"mov\tr2,%3\n\t" \
|
78 |
"mov\tr3,%4\n\t" \
|
79 |
__syscall(name) \ |
80 |
"mov\t%0,r0" \
|
81 |
: "=r" (__res) \
|
82 |
: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4)) \ |
83 |
: "r0","r1","r2","r3","lr"); \ |
84 |
__syscall_return(type,__res); \ |
85 |
} |
86 |
|
87 |
|
88 |
#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
|
89 |
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) { \ |
90 |
long __res; \
|
91 |
__asm__ __volatile__ ( \ |
92 |
"mov\tr0,%1\n\t" \
|
93 |
"mov\tr1,%2\n\t" \
|
94 |
"mov\tr2,%3\n\t" \
|
95 |
"mov\tr3,%4\n\t" \
|
96 |
"mov\tr4,%5\n\t" \
|
97 |
__syscall(name) \ |
98 |
"mov\t%0,r0" \
|
99 |
: "=r" (__res) \
|
100 |
: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4)), \ |
101 |
"r" ((long)(arg5)) \ |
102 |
: "r0","r1","r2","r3","r4","lr"); \ |
103 |
__syscall_return(type,__res); \ |
104 |
} |
105 |
|
106 |
_syscall1(int,exit1,int,status); |
107 |
_syscall3(int,write,int,fd,const char *,buf, int, len); |
108 |
|
109 |
void _start(void) |
110 |
{ |
111 |
write(1, "Hello World\n", 12); |
112 |
exit1(0);
|
113 |
} |