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1.1 root 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: }
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