1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without

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30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
37 *
38 * $Id: SYS.h,v 1.3 1996/01/22 00:00:51 julian Exp $
39 */
40
41#include <sys/syscall.h>
42#include "DEFS.h"
43
44#ifdef PIC
45#define PIC_PROLOGUE \
46 pushl %ebx; \

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59#define PIC_PLT(x) x
60#define PIC_GOT(x) x
61#define PIC_GOTOFF(x) x
62#endif
63
64#define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(x); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b
65#define RSYSCALL(x) SYSCALL(x); ret
66
67/*
68 * For the thread_safe versions, we prepend _thread_sys_ to the function
69 * name so that the 'C' wrapper can go around the real name.
70 */
71#ifdef _THREAD_SAFE /* in case */
72#define PSYSCALL(x,y) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(y); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b
73#define PRSYSCALL(x,y) PSYSCALL(x,y); ret
74#endif
75
76#define PSEUDO(x,y) ENTRY(x); lea __CONCAT(SYS_,y), %eax; KERNCALL; ret
77#define CALL(x,y) call CNAME(y); addl $4*x,%esp
78/* gas fucks up offset -- although we don't currently need it, do for BCS */
79#define LCALL(x,y) .byte 0x9a ; .long y; .word x
80
81#ifdef __ELF__
82#define KERNCALL int $0x80 /* Faster */
83#else
84#define KERNCALL LCALL(7,0) /* The old way */
85#endif
86
87#define ASMSTR .asciz