mirror of
https://git.proxmox.com/git/qemu
synced 2025-10-31 15:09:27 +00:00
394411ac74
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@231 c046a42c-6fe2-441c-8c8c-71466251a162
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
#define __NR_SYSCALL_BASE 0x900000
|
|
#define __NR_exit1 (__NR_SYSCALL_BASE+ 1)
|
|
#define __NR_write (__NR_SYSCALL_BASE+ 4)
|
|
|
|
#define __sys2(x) #x
|
|
#define __sys1(x) __sys2(x)
|
|
|
|
#ifndef __syscall
|
|
#define __syscall(name) "swi\t" __sys1(__NR_##name) "\n\t"
|
|
#endif
|
|
|
|
#define __syscall_return(type, res) \
|
|
do { \
|
|
return (type) (res); \
|
|
} while (0)
|
|
|
|
#define _syscall0(type,name) \
|
|
type name(void) { \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
__syscall(name) \
|
|
"mov %0,r0" \
|
|
:"=r" (__res) : : "r0","lr"); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
#define _syscall1(type,name,type1,arg1) \
|
|
type name(type1 arg1) { \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
"mov\tr0,%1\n\t" \
|
|
__syscall(name) \
|
|
"mov %0,r0" \
|
|
: "=r" (__res) \
|
|
: "r" ((long)(arg1)) \
|
|
: "r0","lr"); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
#define _syscall2(type,name,type1,arg1,type2,arg2) \
|
|
type name(type1 arg1,type2 arg2) { \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
"mov\tr0,%1\n\t" \
|
|
"mov\tr1,%2\n\t" \
|
|
__syscall(name) \
|
|
"mov\t%0,r0" \
|
|
: "=r" (__res) \
|
|
: "r" ((long)(arg1)),"r" ((long)(arg2)) \
|
|
: "r0","r1","lr"); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
|
|
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
|
|
type name(type1 arg1,type2 arg2,type3 arg3) { \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
"mov\tr0,%1\n\t" \
|
|
"mov\tr1,%2\n\t" \
|
|
"mov\tr2,%3\n\t" \
|
|
__syscall(name) \
|
|
"mov\t%0,r0" \
|
|
: "=r" (__res) \
|
|
: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)) \
|
|
: "r0","r1","r2","lr"); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
|
|
#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
|
|
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
"mov\tr0,%1\n\t" \
|
|
"mov\tr1,%2\n\t" \
|
|
"mov\tr2,%3\n\t" \
|
|
"mov\tr3,%4\n\t" \
|
|
__syscall(name) \
|
|
"mov\t%0,r0" \
|
|
: "=r" (__res) \
|
|
: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4)) \
|
|
: "r0","r1","r2","r3","lr"); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
|
|
#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
|
|
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) { \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
"mov\tr0,%1\n\t" \
|
|
"mov\tr1,%2\n\t" \
|
|
"mov\tr2,%3\n\t" \
|
|
"mov\tr3,%4\n\t" \
|
|
"mov\tr4,%5\n\t" \
|
|
__syscall(name) \
|
|
"mov\t%0,r0" \
|
|
: "=r" (__res) \
|
|
: "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)),"r" ((long)(arg4)), \
|
|
"r" ((long)(arg5)) \
|
|
: "r0","r1","r2","r3","r4","lr"); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
_syscall1(int,exit1,int,status);
|
|
_syscall3(int,write,int,fd,const char *,buf, int, len);
|
|
|
|
void _start(void)
|
|
{
|
|
write(1, "Hello World\n", 12);
|
|
exit1(0);
|
|
}
|