diff options
Diffstat (limited to 'libc/sysdeps/linux/frv/bits/syscalls.h')
| -rw-r--r-- | libc/sysdeps/linux/frv/bits/syscalls.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/frv/bits/syscalls.h b/libc/sysdeps/linux/frv/bits/syscalls.h new file mode 100644 index 000000000..552f7e7c4 --- /dev/null +++ b/libc/sysdeps/linux/frv/bits/syscalls.h @@ -0,0 +1,129 @@ +#ifndef _BITS_SYSCALLS_H +#define _BITS_SYSCALLS_H +#ifndef _SYSCALL_H +# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." +#endif + +/* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel + * header files. It also defines the traditional `SYS_<name>' macros for older + * programs. */ +#include <bits/sysnum.h> + +#ifndef __set_errno +# define __set_errno(val) ((*__errno_location ()) = (val)) +#endif +#ifndef SYS_ify +# define SYS_ify(syscall_name) (__NR_##syscall_name) +#endif + +#ifndef __ASSEMBLER__ + +/* user-visible error numbers are in the range -1 - -4095: see <asm-frv/errno.h> */ +#define __syscall_return(type, res) \ +do { \ + unsigned long __sr2 = (res); \ + if ((unsigned long)(__sr2) >= (unsigned long)(-4095)) { \ + __set_errno (-(__sr2)); \ + __sr2 = -1; \ + } \ + return (type) (__sr2); \ +} while (0) + +/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */ + +#define _syscall0(type,name) \ +type name(void) \ +{ \ +register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \ +register unsigned long __sc0 __asm__ ("gr8"); \ +__asm__ __volatile__ ("tra gr0,gr0" \ + : "=r" (__sc0) \ + : "r" (__scnum)); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall1(type,name,type1,arg1) \ +type name(type1 arg1) \ +{ \ +register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \ +register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \ +__asm__ __volatile__ ("tra gr0,gr0" \ + : "+r" (__sc0) \ + : "r" (__scnum)); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall2(type,name,type1,arg1,type2,arg2) \ +type name(type1 arg1,type2 arg2) \ +{ \ +register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \ +register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \ +register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \ +__asm__ __volatile__ ("tra gr0,gr0" \ + : "+r" (__sc0) \ + : "r" (__scnum), "r" (__sc1)); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ +type name(type1 arg1,type2 arg2,type3 arg3) \ +{ \ +register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \ +register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \ +register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \ +register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \ +__asm__ __volatile__ ("tra gr0,gr0" \ + : "+r" (__sc0) \ + : "r" (__scnum), "r" (__sc1), "r" (__sc2)); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ +type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ +{ \ +register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \ +register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \ +register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \ +register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \ +register unsigned long __sc3 __asm__ ("gr11") = (unsigned long) arg4; \ +__asm__ __volatile__ ("tra gr0,gr0" \ + : "+r" (__sc0) \ + : "r" (__scnum), "r" (__sc1), "r" (__sc2), "r" (__sc3)); \ +__syscall_return(type,__sc0); \ +} + +#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) \ +{ \ +register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \ +register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \ +register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \ +register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \ +register unsigned long __sc3 __asm__ ("gr11") = (unsigned long) arg4; \ +register unsigned long __sc4 __asm__ ("gr12") = (unsigned long) arg5; \ +__asm__ __volatile__ ("tra gr0,gr0" \ + : "+r" (__sc0) \ + : "r" (__scnum), "r" (__sc1), "r" (__sc2), \ + "r" (__sc3), "r" (__sc4)); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5, type6, arg6) \ +type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6) \ +{ \ +register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \ +register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \ +register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \ +register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \ +register unsigned long __sc3 __asm__ ("gr11") = (unsigned long) arg4; \ +register unsigned long __sc4 __asm__ ("gr12") = (unsigned long) arg5; \ +register unsigned long __sc5 __asm__ ("gr13") = (unsigned long) arg6; \ +__asm__ __volatile__ ("tra gr0,gr0" \ + : "+r" (__sc0) \ + : "r" (__scnum), "r" (__sc1), "r" (__sc2), \ + "r" (__sc3), "r" (__sc4), "r" (__sc5)); \ +__syscall_return(type,__sc0); \ +} + +#endif /* __ASSEMBLER__ */ +#endif /* _BITS_SYSCALLS_H */ |