From 72677cc3d8403da4b35c99617352bde347780222 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Mon, 22 Jul 2002 17:10:30 +0000 Subject: Rework syscall handling. Rewrite syscall handlers for x86 and ARM. Prepare to kill the UNIFIED_SYSCALL option and instead have it be a per arch thing that is either enabled or not for that arch. -Erik --- libc/sysdeps/linux/alpha/bits/syscalls.h | 194 ++----------------------------- 1 file changed, 11 insertions(+), 183 deletions(-) (limited to 'libc/sysdeps/linux/alpha/bits/syscalls.h') diff --git a/libc/sysdeps/linux/alpha/bits/syscalls.h b/libc/sysdeps/linux/alpha/bits/syscalls.h index e1ee1b95c..da6a6d43e 100644 --- a/libc/sysdeps/linux/alpha/bits/syscalls.h +++ b/libc/sysdeps/linux/alpha/bits/syscalls.h @@ -1,187 +1,15 @@ -/* 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. */ +#ifndef _BITS_SYSCALLS_H +#define _BITS_SYSCALLS_H +#ifndef _SYSCALL_H +# error "Never use directly; include instead." +#endif +#include -#define _syscall_return(type) \ - return (_sc_err ? errno = _sc_ret, _sc_ret = -1L : 0), (type) _sc_ret - -#define _syscall_clobbers \ - "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \ - "$22", "$23", "$24", "$25", "$27", "$28" \ - -#define _syscall0(type, name) \ -type name(void) \ -{ \ - long _sc_ret, _sc_err; \ - { \ - register long _sc_0 __asm__("$0"); \ - register long _sc_19 __asm__("$19"); \ - \ - _sc_0 = __NR_##name; \ - __asm__("callsys # %0 %1 %2" \ - : "=r"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0) \ - : _syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ - } \ - _syscall_return(type); \ -} - -#define _syscall1(type,name,type1,arg1) \ -type name(type1 arg1) \ -{ \ - long _sc_ret, _sc_err; \ - { \ - register long _sc_0 __asm__("$0"); \ - register long _sc_16 __asm__("$16"); \ - register long _sc_19 __asm__("$19"); \ - \ - _sc_0 = __NR_##name; \ - _sc_16 = (long) (arg1); \ - __asm__("callsys # %0 %1 %2 %3" \ - : "=r"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0), "r"(_sc_16) \ - : _syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ - } \ - _syscall_return(type); \ -} - -#define _syscall2(type,name,type1,arg1,type2,arg2) \ -type name(type1 arg1,type2 arg2) \ -{ \ - long _sc_ret, _sc_err; \ - { \ - register long _sc_0 __asm__("$0"); \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_19 __asm__("$19"); \ - \ - _sc_0 = __NR_##name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - __asm__("callsys # %0 %1 %2 %3 %4" \ - : "=r"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17) \ - : _syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ - } \ - _syscall_return(type); \ -} - -#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ -type name(type1 arg1,type2 arg2,type3 arg3) \ -{ \ - long _sc_ret, _sc_err; \ - { \ - register long _sc_0 __asm__("$0"); \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ - register long _sc_19 __asm__("$19"); \ - \ - _sc_0 = __NR_##name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ - __asm__("callsys # %0 %1 %2 %3 %4 %5" \ - : "=r"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ - "r"(_sc_18) \ - : _syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ - } \ - _syscall_return(type); \ -} - -#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ -type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ -{ \ - long _sc_ret, _sc_err; \ - { \ - register long _sc_0 __asm__("$0"); \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ - register long _sc_19 __asm__("$19"); \ - \ - _sc_0 = __NR_##name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ - _sc_19 = (long) (arg4); \ - __asm__("callsys # %0 %1 %2 %3 %4 %5 %6" \ - : "=r"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ - "r"(_sc_18), "1"(_sc_19) \ - : _syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ - } \ - _syscall_return(type); \ -} - -#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 _sc_ret, _sc_err; \ - { \ - register long _sc_0 __asm__("$0"); \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ - register long _sc_19 __asm__("$19"); \ - register long _sc_20 __asm__("$20"); \ - \ - _sc_0 = __NR_##name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ - _sc_19 = (long) (arg4); \ - _sc_20 = (long) (arg5); \ - __asm__("callsys # %0 %1 %2 %3 %4 %5 %6 %7" \ - : "=r"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ - "r"(_sc_18), "1"(_sc_19), "r"(_sc_20) \ - : _syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ - } \ - _syscall_return(type); \ -} - -#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)\ -{ \ - long _sc_ret, _sc_err; \ - { \ - register long _sc_0 __asm__("$0"); \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ - register long _sc_19 __asm__("$19"); \ - register long _sc_20 __asm__("$20"); \ - register long _sc_21 __asm__("$21"); \ - \ - _sc_0 = __NR_##name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ - _sc_19 = (long) (arg4); \ - _sc_20 = (long) (arg5); \ - _sc_21 = (long) (arg6); \ - __asm__("callsys # %0 %1 %2 %3 %4 %5 %6 %7 %8" \ - : "=r"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ - "r"(_sc_18), "1"(_sc_19), "r"(_sc_20), "r"(_sc_21) \ - : _syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ - } \ - _syscall_return(type); \ -} - +/* Do something very evil for now. Until we create our own syscall + * macros, short circuit bits/syscall.h and use asm/unistd.h instead */ +#define _BITS_SYSCALL_H +#include +#endif /* _BITS_SYSCALLS_H */ -- cgit v1.2.3