usr/src/lib/libtnfctl/i386_assm.s

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*
  27  * The following c routine has appropriate interface semantics
  28  * for the chaining combination template.  On the sparc architecture
  29  * the assembly routine is further tuned to make it tail recursive.
  30  *
  31  * void
  32  * prb_chain_entry(void *a, void *b, void *c)
  33  * {
  34  *      prb_chain_down(a, b, c);
  35  *      prb_chain_next(a, b, c);
  36  * }
  37  */
  38
  39         .file   "i386_assm.s"
  40         .data
  41         .align  4
  42         .globl  prb_callinfo
  43 prb_callinfo:
  44         .4byte  1               /* offset */
  45         .4byte  0               /* shift right */
  46         .4byte  0xffffffff      /* mask */
  47
  48         .text
  49         .align  4
  50         .globl  prb_chain_entry
  51         .globl  prb_chain_down
  52         .local  chain_down
  53         .globl  prb_chain_next
  54         .local  chain_next
  55         .globl  prb_chain_end
  56 prb_chain_entry:
  57 #if defined(__amd64)
  58         /* XX64 -- fix me */
  59 #else
  60         pushl   %ebp
  61         movl    %esp, %ebp
  62         pushl   %edi
  63         pushl   %esi
  64         pushl   %ebx
  65         movl    16(%ebp), %ebx
  66         pushl   %ebx
  67         movl    12(%ebp), %edi
  68         pushl   %edi
  69         movl    8(%ebp), %esi
  70         pushl   %esi
  71 #endif
  72 prb_chain_down:
  73 chain_down:
  74 #if defined(__amd64)
  75         /* XX64 -- fix me */
  76 #else
  77         call    chain_down
  78         addl    $12, %esp
  79         pushl   %ebx
  80         pushl   %edi
  81         pushl   %esi
  82 #endif
  83 prb_chain_next:
  84 chain_next:
  85 #if defined(__amd64)
  86         /* XX64 -- fix me */
  87 #else
  88         call    chain_next
  89         addl    $12, %esp
  90         popl    %ebx
  91         popl    %esi
  92         popl    %edi
  93         leave
  94 #endif
  95         ret
  96 prb_chain_end:
  97         nop