#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 - -125: see <asm-sh/errno.h> */ #define __syscall_return(type, res) \ do { \ if ((unsigned long)(res) >= (unsigned long)(-125)) { \ /* Avoid using "res" which is declared to be in register r0; \ errno might expand to a function call and clobber it. */ \ int __err = -(res); \ __set_errno(__err); \ res = -1; \ } \ return (type) (res); \ } while (0) /* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */ #define _syscall0(type,name) \ type name(void) \ { \ register long __sc0 __asm__ ("r3") = __NR_##name; \ __asm__ __volatile__ ("trapa #0x10" \ : "=z" (__sc0) \ : "0" (__sc0) \ : "memory" ); \ __syscall_return(type,__sc0); \ } #define _syscall1(type,name,type1,arg1) \ type name(type1 arg1) \ { \ register long __sc0 __asm__ ("r3") = __NR_##name; \ register long __sc4 __asm__ ("r4") = (long) arg1; \ __asm__ __volatile__ ("trapa #0x11" \ : "=z" (__sc0) \ : "0" (__sc0), "r" (__sc4) \ : "memory"); \ __syscall_return(type,__sc0); \ } #define _syscall2(type,name,type1,arg1,type2,arg2) \ type name(type1 arg1,type2 arg2) \ { \ register long __sc0 __asm__ ("r3") = __NR_##name; \ register long __sc4 __asm__ ("r4") = (long) arg1; \ register long __sc5 __asm__ ("r5") = (long) arg2; \ __asm__ __volatile__ ("trapa #0x12" \ : "=z" (__sc0) \ : "0" (__sc0), "r" (__sc4), "r" (__sc5) \ : "memory"); \ __syscall_return(type,__sc0); \ } #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ type name(type1 arg1,type2 arg2,type3 arg3) \ { \ register long __sc0 __asm__ ("r3") = __NR_##name; \ register long __sc4 __asm__ ("r4") = (long) arg1; \ register long __sc5 __asm__ ("r5") = (long) arg2; \ register long __sc6 __asm__ ("r6") = (long) arg3; \ __asm__ __volatile__ ("trapa #0x13" \ : "=z" (__sc0) \ : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6) \ : "memory"); \ __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 long __sc0 __asm__ ("r3") = __NR_##name; \ register long __sc4 __asm__ ("r4") = (long) arg1; \ register long __sc5 __asm__ ("r5") = (long) arg2; \ register long __sc6 __asm__ ("r6") = (long) arg3; \ register long __sc7 __asm__ ("r7") = (long) arg4; \ __asm__ __volatile__ ("trapa #0x14" \ : "=z" (__sc0) \ : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), \ "r" (__sc7) \ : "memory" ); \ __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 long __sc3 __asm__ ("r3") = __NR_##name; \ register long __sc4 __asm__ ("r4") = (long) arg1; \ register long __sc5 __asm__ ("r5") = (long) arg2; \ register long __sc6 __asm__ ("r6") = (long) arg3; \ register long __sc7 __asm__ ("r7") = (long) arg4; \ register long __sc0 __asm__ ("r0") = (long) arg5; \ __asm__ __volatile__ ("trapa #0x15" \ : "=z" (__sc0) \ : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7), \ "r" (__sc3) \ : "memory" ); \ __syscall_return(type,__sc0); \ } /* Add in _syscall6 which is not in the kernel header */ #ifndef __SH_SYSCALL6_TRAPA # define __SH_SYSCALL6_TRAPA "0x16" #endif #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 long __sc3 __asm__ ("r3") = __NR_##name; \ register long __sc4 __asm__ ("r4") = (long) arg1; \ register long __sc5 __asm__ ("r5") = (long) arg2; \ register long __sc6 __asm__ ("r6") = (long) arg3; \ register long __sc7 __asm__ ("r7") = (long) arg4; \ register long __sc0 __asm__ ("r0") = (long) arg5; \ register long __sc1 __asm__ ("r1") = (long) arg6; \ __asm__ __volatile__ ("trapa #" __SH_SYSCALL6_TRAPA \ : "=z" (__sc0) \ : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7), \ "r" (__sc3), "r" (__sc1) \ : "memory" ); \ __syscall_return(type,__sc0); \ } #endif /* __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */