2 * arch/sparc/include/klibc/archsys.h
4 * Architecture-specific syscall definitions
7 #ifndef _KLIBC_ARCHSYS_H
8 #define _KLIBC_ARCHSYS_H
10 /* fork and vfork return the "other process" pid in %o0 and an
11 "is child" flag in %o1... */
13 #define _syscall0_forkish(type,name) \
16 register long __g1 __asm__ ("g1") = __NR_##name; \
17 register unsigned long __o0 __asm__ ("o0"); \
18 register unsigned long __o1 __asm__ ("o1"); \
19 __asm__ __volatile__ ("t 0x10\n\t" \
22 "sub %%g0, %%o0, %0\n\t" \
24 : "=r" (__o0), "=r" (__o1)\
27 if ((unsigned long)__o0 < (unsigned long)-255) \
28 return (type)(__o0 & (__o1-1)); \
33 /* SPARC seems to lack _syscall6() in its headers */
37 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
38 type5,arg5,type6,arg6) \
39 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \
42 register long __g1 __asm__ ("g1") = __NR_##name; \
43 register long __o0 __asm__ ("o0") = (long)(arg1); \
44 register long __o1 __asm__ ("o1") = (long)(arg2); \
45 register long __o2 __asm__ ("o2") = (long)(arg3); \
46 register long __o3 __asm__ ("o3") = (long)(arg4); \
47 register long __o4 __asm__ ("o4") = (long)(arg5); \
48 register long __o5 __asm__ ("o5") = (long)(arg6); \
49 __asm__ __volatile__ ("t 0x10\n\t" \
52 "sub %%g0, %%o0, %0\n\t" \
54 : "=r" (__res), "=&r" (__o0) \
55 : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__o5), "r" (__g1) \
57 if (__res < -255 || __res>=0) \
58 return (type) __res; \
63 #endif /* _syscall6 missing */
65 #endif /* _KLIBC_ARCHSYS_H */