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/* Unlike the asm/unistd.h kernel header file (which this is partly based on),
* this file must be able to cope with PIC and non-PIC code. For some arches
* there is no difference. For x86 (which has far too few registers) there is
* a difference. Regardless, including asm/unistd.h is hereby officially
* forbidden. Don't do it. It is bad for you. */
#include <features.h>
#ifndef _SYSCALLS_H_
#define _SYSCALLS_H_
/*
* System calls under the Sparc.
*
* Don't be scared by the ugly clobbers, it is the only way I can
* think of right now to force the arguments into fixed registers
* before the trap into the system call with gcc 'asm' statements.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*
* SunOS compatibility based upon preliminary work which is:
*
* Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
*/
#define _syscall0(type,name) \
type name(void) \
{ \
long __res; \
register long __g1 __asm__ ("g1") = __NR_##name; \
__asm__ __volatile__ ("t 0x10\n\t" \
"bcc 1f\n\t" \
"mov %%o0, %0\n\t" \
"sub %%g0, %%o0, %0\n\t" \
"1:\n\t" \
: "=r" (__res)\
: "r" (__g1) \
: "o0", "cc"); \
if (__res < -255 || __res >= 0) \
return (type) __res; \
errno = -__res; \
return -1; \
}
#define _syscall1(type,name,type1,arg1) \
type name(type1 arg1) \
{ \
long __res; \
register long __g1 __asm__ ("g1") = __NR_##name; \
register long __o0 __asm__ ("o0") = (long)(arg1); \
__asm__ __volatile__ ("t 0x10\n\t" \
"bcc 1f\n\t" \
"mov %%o0, %0\n\t" \
"sub %%g0, %%o0, %0\n\t" \
"1:\n\t" \
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__g1) \
: "cc"); \
if (__res < -255 || __res >= 0) \
return (type) __res; \
errno = -__res; \
return -1; \
}
#define _syscall2(type,name,type1,arg1,type2,arg2) \
type name(type1 arg1,type2 arg2) \
{ \
long __res; \
register long __g1 __asm__ ("g1") = __NR_##name; \
register long __o0 __asm__ ("o0") = (long)(arg1); \
register long __o1 __asm__ ("o1") = (long)(arg2); \
__asm__ __volatile__ ("t 0x10\n\t" \
"bcc 1f\n\t" \
"mov %%o0, %0\n\t" \
"sub %%g0, %%o0, %0\n\t" \
"1:\n\t" \
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__g1) \
: "cc"); \
if (__res < -255 || __res >= 0) \
return (type) __res; \
errno = -__res; \
return -1; \
}
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
type name(type1 arg1,type2 arg2,type3 arg3) \
{ \
long __res; \
register long __g1 __asm__ ("g1") = __NR_##name; \
register long __o0 __asm__ ("o0") = (long)(arg1); \
register long __o1 __asm__ ("o1") = (long)(arg2); \
register long __o2 __asm__ ("o2") = (long)(arg3); \
__asm__ __volatile__ ("t 0x10\n\t" \
"bcc 1f\n\t" \
"mov %%o0, %0\n\t" \
"sub %%g0, %%o0, %0\n\t" \
"1:\n\t" \
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
: "cc"); \
if (__res < -255 || __res>=0) \
return (type) __res; \
errno = -__res; \
return -1; \
}
#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
{ \
long __res; \
register long __g1 __asm__ ("g1") = __NR_##name; \
register long __o0 __asm__ ("o0") = (long)(arg1); \
register long __o1 __asm__ ("o1") = (long)(arg2); \
register long __o2 __asm__ ("o2") = (long)(arg3); \
register long __o3 __asm__ ("o3") = (long)(arg4); \
__asm__ __volatile__ ("t 0x10\n\t" \
"bcc 1f\n\t" \
"mov %%o0, %0\n\t" \
"sub %%g0, %%o0, %0\n\t" \
"1:\n\t" \
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
: "cc"); \
if (__res < -255 || __res>=0) \
return (type) __res; \
errno = -__res; \
return -1; \
}
#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; \
register long __g1 __asm__ ("g1") = __NR_##name; \
register long __o0 __asm__ ("o0") = (long)(arg1); \
register long __o1 __asm__ ("o1") = (long)(arg2); \
register long __o2 __asm__ ("o2") = (long)(arg3); \
register long __o3 __asm__ ("o3") = (long)(arg4); \
register long __o4 __asm__ ("o4") = (long)(arg5); \
__asm__ __volatile__ ("t 0x10\n\t" \
"bcc 1f\n\t" \
"mov %%o0, %0\n\t" \
"sub %%g0, %%o0, %0\n\t" \
"1:\n\t" \
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
: "cc"); \
if (__res < -255 || __res>=0) \
return (type) __res; \
errno = -__res; \
return -1; \
}
#endif /* _SYSCALLS_H_ */
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