#ifndef _BITS_SYSCALLS_H #define _BITS_SYSCALLS_H #ifndef _SYSCALL_H # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." #endif #ifndef __ASSEMBLER__ #include <errno.h> #define SYS_ify(syscall_name) (__NR_##syscall_name) /* user-visible error numbers are in the range -1 - -4095: see <asm-frv/errno.h> */ #if defined _LIBC && !defined __set_errno # define __syscall_return(type, res) \ do { \ unsigned long __sr2 = (res); \ if (__builtin_expect ((unsigned long)(__sr2) \ >= (unsigned long)(-4095), 0)) { \ extern int __syscall_error (int); \ return (type) __syscall_error (__sr2); \ } \ return (type) (__sr2); \ } while (0) #else # define __syscall_return(type, res) \ do { \ unsigned long __sr2 = (res); \ if (__builtin_expect ((unsigned long)(__sr2) \ >= (unsigned long)(-4095), 0)) { \ __set_errno (-__sr2); \ __sr2 = -1; \ } \ return (type) (__sr2); \ } while (0) #endif #ifndef __set_errno # define __set_errno(val) ((*__errno_location ()) = (val)) #endif /* 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 */