You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Alternate-Entry-Points.html 3.8KB

3 年之前
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586
  1. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  2. <html>
  3. <!-- Copyright (C) 1992-2020 Free Software Foundation, Inc.
  4. Contributed by Cygnus Support. Written by Julia Menapace, Jim Kingdon,
  5. and David MacKenzie.
  6. Permission is granted to copy, distribute and/or modify this document
  7. under the terms of the GNU Free Documentation License, Version 1.3 or
  8. any later version published by the Free Software Foundation; with no
  9. Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
  10. Texts. A copy of the license is included in the section entitled "GNU
  11. Free Documentation License". -->
  12. <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ -->
  13. <head>
  14. <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  15. <title>Alternate Entry Points (STABS)</title>
  16. <meta name="description" content="Alternate Entry Points (STABS)">
  17. <meta name="keywords" content="Alternate Entry Points (STABS)">
  18. <meta name="resource-type" content="document">
  19. <meta name="distribution" content="global">
  20. <meta name="Generator" content="makeinfo">
  21. <link href="index.html#Top" rel="start" title="Top">
  22. <link href="Symbol-Types-Index.html#Symbol-Types-Index" rel="index" title="Symbol Types Index">
  23. <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
  24. <link href="Program-Structure.html#Program-Structure" rel="up" title="Program Structure">
  25. <link href="Constants.html#Constants" rel="next" title="Constants">
  26. <link href="Block-Structure.html#Block-Structure" rel="prev" title="Block Structure">
  27. <style type="text/css">
  28. <!--
  29. a.summary-letter {text-decoration: none}
  30. blockquote.indentedblock {margin-right: 0em}
  31. blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
  32. blockquote.smallquotation {font-size: smaller}
  33. div.display {margin-left: 3.2em}
  34. div.example {margin-left: 3.2em}
  35. div.lisp {margin-left: 3.2em}
  36. div.smalldisplay {margin-left: 3.2em}
  37. div.smallexample {margin-left: 3.2em}
  38. div.smalllisp {margin-left: 3.2em}
  39. kbd {font-style: oblique}
  40. pre.display {font-family: inherit}
  41. pre.format {font-family: inherit}
  42. pre.menu-comment {font-family: serif}
  43. pre.menu-preformatted {font-family: serif}
  44. pre.smalldisplay {font-family: inherit; font-size: smaller}
  45. pre.smallexample {font-size: smaller}
  46. pre.smallformat {font-family: inherit; font-size: smaller}
  47. pre.smalllisp {font-size: smaller}
  48. span.nolinebreak {white-space: nowrap}
  49. span.roman {font-family: initial; font-weight: normal}
  50. span.sansserif {font-family: sans-serif; font-weight: normal}
  51. ul.no-bullet {list-style: none}
  52. -->
  53. </style>
  54. </head>
  55. <body lang="en">
  56. <a name="Alternate-Entry-Points"></a>
  57. <div class="header">
  58. <p>
  59. Previous: <a href="Block-Structure.html#Block-Structure" accesskey="p" rel="prev">Block Structure</a>, Up: <a href="Program-Structure.html#Program-Structure" accesskey="u" rel="up">Program Structure</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Types-Index.html#Symbol-Types-Index" title="Index" rel="index">Index</a>]</p>
  60. </div>
  61. <hr>
  62. <a name="Alternate-Entry-Points-1"></a>
  63. <h3 class="section">2.8 Alternate Entry Points</h3>
  64. <a name="index-N_005fENTRY"></a>
  65. <a name="index-C_005fENTRY"></a>
  66. <p>Some languages, like Fortran, have the ability to enter procedures at
  67. some place other than the beginning. One can declare an alternate entry
  68. point. The <code>N_ENTRY</code> stab is for this; however, the Sun FORTRAN
  69. compiler doesn&rsquo;t use it. According to AIX documentation, only the name
  70. of a <code>C_ENTRY</code> stab is significant; the address of the alternate
  71. entry point comes from the corresponding external symbol. A previous
  72. revision of this document said that the value of an <code>N_ENTRY</code> stab
  73. was the address of the alternate entry point, but I don&rsquo;t know the
  74. source for that information.
  75. </p>
  76. </body>
  77. </html>