#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 - -125: see <asm-sh64/errno.h> */ #define __syscall_return(type, res) \ do { \ /* Note: when returning from kernel the return value is in r9 \ ** This prevents conflicts between return value and arg1 \ ** when dispatching signal handler, in other words makes \ ** life easier in the system call epilogue (see entry.S) \ */ \ register unsigned long __sr2 __asm__ ("r2") = res; \ if ((unsigned long)(res) >= (unsigned long)(-125)) { \ errno = -(res); \ __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 __sc0 __asm__ ("r9") = ((0x10 << 16) | __NR_##name); \ __asm__ __volatile__ ("trapa %1" \ : "=r" (__sc0) \ : "r" (__sc0) ); \ __syscall_return(type,__sc0); \ } #define _syscall1(type,name,type1,arg1) \ type name(type1 arg1) \ { \ register unsigned long __sc0 __asm__ ("r9") = ((0x11 << 16) | __NR_##name); \ register unsigned long __sc2 __asm__ ("r2") = (unsigned long) arg1; \ __asm__ __volatile__ ("trapa %1" \ : "=r" (__sc0) \ : "r" (__sc0), "r" (__sc2)); \ __syscall_return(type,__sc0); \ } #define _syscall2(type,name,type1,arg1,type2,arg2) \ type name(type1 arg1,type2 arg2) \ { \ register unsigned long __sc0 __asm__ ("r9") = ((0x12 << 16) | __NR_##name); \ register unsigned long __sc2 __asm__ ("r2") = (unsigned long) arg1; \ register unsigned long __sc3 __asm__ ("r3") = (unsigned long) arg2; \ __asm__ __volatile__ ("trapa %1" \ : "=r" (__sc0) \ : "r" (__sc0), "r" (__sc2), "r" (__sc3) ); \ __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 __sc0 __asm__ ("r9") = ((0x13 << 16) | __NR_##name); \ register unsigned long __sc2 __asm__ ("r2") = (unsigned long) arg1; \ register unsigned long __sc3 __asm__ ("r3") = (unsigned long) arg2; \ register unsigned long __sc4 __asm__ ("r4") = (unsigned long) arg3; \ __asm__ __volatile__ ("trapa %1" \ : "=r" (__sc0) \ : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4) ); \ __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 __sc0 __asm__ ("r9") = ((0x14 << 16) | __NR_##name); \ register unsigned long __sc2 __asm__ ("r2") = (unsigned long) arg1; \ register unsigned long __sc3 __asm__ ("r3") = (unsigned long) arg2; \ register unsigned long __sc4 __asm__ ("r4") = (unsigned long) arg3; \ register unsigned long __sc5 __asm__ ("r5") = (unsigned long) arg4; \ __asm__ __volatile__ ("trapa %1" \ : "=r" (__sc0) \ : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4), "r" (__sc5) );\ __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 __sc0 __asm__ ("r9") = ((0x15 << 16) | __NR_##name); \ register unsigned long __sc2 __asm__ ("r2") = (unsigned long) arg1; \ register unsigned long __sc3 __asm__ ("r3") = (unsigned long) arg2; \ register unsigned long __sc4 __asm__ ("r4") = (unsigned long) arg3; \ register unsigned long __sc5 __asm__ ("r5") = (unsigned long) arg4; \ register unsigned long __sc6 __asm__ ("r6") = (unsigned long) arg5; \ __asm__ __volatile__ ("trapa %1" \ : "=r" (__sc0) \ : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4), "r" (__sc5), \ "r" (__sc6)); \ __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 __sc0 __asm__ ("r9") = ((0x16 << 16) | __NR_##name); \ register unsigned long __sc2 __asm__ ("r2") = (unsigned long) arg1; \ register unsigned long __sc3 __asm__ ("r3") = (unsigned long) arg2; \ register unsigned long __sc4 __asm__ ("r4") = (unsigned long) arg3; \ register unsigned long __sc5 __asm__ ("r5") = (unsigned long) arg4; \ register unsigned long __sc6 __asm__ ("r6") = (unsigned long) arg5; \ register unsigned long __sc7 __asm__ ("r7") = (unsigned long) arg6; \ __asm__ __volatile__ ("trapa %1" \ : "=r" (__sc0) \ : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4), "r" (__sc5), \ "r" (__sc6), "r" (__sc7)); \ __syscall_return(type,__sc0); \ } #endif /* __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */