projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 394411ac FB |
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 | } | |
| 3b46e624 | 86 | |
| 394411ac FB |
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 | } |