external/bsd/pcc/dist/pcc-libs/csu/darwin/i386/dylib1.c

   1 /*      $Id: dylib1.c,v 1.1.1.1 2009/09/04 00:27:35 gmcgarry Exp $      */
   2 /*-
   3  * Copyright (c) 2009 Gregory McGarry <g.mcgarry@ieee.org>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include "common.h"
  19
  20 /*
  21  *  void _dyld_func_lookup(const char *, void **);
  22  *
  23  *  jump to the linker via the pointer in the __dyld section
  24  */
  25 asm(
  26         "       .text\n"
  27         "       .private_extern __dyld_func_lookup\n"
  28         "__dyld_func_lookup:\n"
  29         "       call L__dyld_func_lookup$pb\n"
  30         "L__dyld_func_lookup$pb:\n"
  31         "       popl %eax\n"
  32         "       movl Ldyld_func_lookup-L__dyld_func_lookup$pb(%eax),%eax\n"
  33         "       jmp *%eax\n"
  34 );
  35
  36 /*
  37  *  void dyld_stub_binding_helper(void)
  38  */
  39 asm(
  40         "       .data\n"
  41         "       .p2align 2\n"
  42         "dyld__mach_header:\n"
  43         "       .long __mh_dylib_header\n"
  44         "       .text\n"
  45         "       .private_extern dyld_stub_binding_helper\n"
  46         "       .p2align 2\n"
  47         "dyld_stub_binding_helper:\n"
  48         "       call Ldyld_stub_binding_helper$pb\n"
  49         "Ldyld_stub_binding_helper$pb:\n"
  50         "       popl %eax\n"
  51         "       pushl dyld__mach_header-Ldyld_stub_binding_helper$pb(%eax)\n"
  52         "       movl Ldyld_lazy_binder-Ldyld_stub_binding_helper$pb(%eax),%eax\n"
  53         "       jmp *%eax\n"
  54 );
  55
  56 /*
  57  * __dyld section
  58  */
  59 asm(
  60         "       .dyld\n"
  61         "       .p2align 2\n"
  62         "Ldyld_lazy_binder:\n"
  63         "       .long 0x8fe01000\n"
  64         "Ldyld_func_lookup:\n"
  65         "       .long 0x8fe01008\n"
  66 );
  67
  68 asm("\t.subsections_via_symbols\n");
  69
  70 IDENT("$Id: dylib1.c,v 1.1.1.1 2009/09/04 00:27:35 gmcgarry Exp $");