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Annotation of src/lib/libc/arch/x86_64/SYS.h, Revision 1.11.6.1

1.1       fvdl        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
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
1.6       agc        16:  * 3. Neither the name of the University nor the names of its contributors
1.1       fvdl       17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  *
                     32:  *     from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
1.11.6.1! tls        33:  *     $NetBSD$
1.1       fvdl       34:  */
                     35:
                     36: #include <machine/asm.h>
                     37: #include <sys/syscall.h>
                     38:
1.4       wiz        39: #ifdef __STDC__
1.5       fvdl       40: #define SYSTRAP(x)     movl $(SYS_ ## x),%eax; movq %rcx, %r10; syscall
1.4       wiz        41: #else
1.5       fvdl       42: #define SYSTRAP(x)     movl $(SYS_/**/x),%eax; movq %rcx, %r10; syscall
1.4       wiz        43: #endif
1.1       fvdl       44:
                     45: #define CERROR         _C_LABEL(__cerror)
                     46: #define CURBRK         _C_LABEL(__curbrk)
                     47:
                     48: #define _SYSCALL_NOERROR(x,y)                                          \
                     49:        ENTRY(x);                                                       \
                     50:        SYSTRAP(y)
                     51:
1.10      dsl        52: #define _SYSCALL_ERR                                                   \
                     53:        jmp CERROR
                     54:
1.1       fvdl       55: #define _SYSCALL(x,y)                                                  \
                     56:        .text; _ALIGN_TEXT;                                             \
1.10      dsl        57:        2: _SYSCALL_ERR;                                                \
1.1       fvdl       58:        _SYSCALL_NOERROR(x,y);                                          \
                     59:        jc 2b
                     60:
                     61: #define SYSCALL_NOERROR(x)                                             \
                     62:        _SYSCALL_NOERROR(x,x)
                     63:
                     64: #define SYSCALL(x)                                                     \
                     65:        _SYSCALL(x,x)
1.7       fvdl       66:
1.1       fvdl       67: #define PSEUDO_NOERROR(x,y)                                            \
                     68:        _SYSCALL_NOERROR(x,y);                                          \
1.11.6.1! tls        69:        ret;                                                            \
        !            70:        END(x)
1.1       fvdl       71:
                     72: #define PSEUDO(x,y)                                                    \
1.10      dsl        73:        _SYSCALL_NOERROR(x,y);                                          \
                     74:        jc 2f;                                                          \
                     75:        ret;                                                            \
1.11.6.1! tls        76:        2: _SYSCALL_ERR;                                                \
        !            77:        END(x)
1.1       fvdl       78:
                     79: #define RSYSCALL_NOERROR(x)                                            \
                     80:        PSEUDO_NOERROR(x,x)
                     81:
                     82: #define RSYSCALL(x)                                                    \
                     83:        PSEUDO(x,x)
                     84:
1.2       thorpej    85: #define        WSYSCALL(weak,strong)                                           \
                     86:        WEAK_ALIAS(weak,strong);                                        \
                     87:        PSEUDO(strong,weak)
1.1       fvdl       88:
                     89:        .globl  CERROR

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