diff options
Diffstat (limited to 'libc/sysdeps/linux/sparc/bits')
| -rw-r--r-- | libc/sysdeps/linux/sparc/bits/syscalls.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc/bits/syscalls.h b/libc/sysdeps/linux/sparc/bits/syscalls.h new file mode 100644 index 000000000..1e123c8ed --- /dev/null +++ b/libc/sysdeps/linux/sparc/bits/syscalls.h @@ -0,0 +1,156 @@ +/* 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_ */ |