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Copyright © 1996 – 2026 Jason A. Donenfeld. All Rights Reverse Engineered.
omment */ .highlight .err { color: #ED007E; background-color: #1E0010 } /* Error */ .highlight .esc { color: #F8F8F2 } /* Escape */ .highlight .g { color: #F8F8F2 } /* Generic */ .highlight .k { color: #66D9EF } /* Keyword */ .highlight .l { color: #AE81FF } /* Literal */ .highlight .n { color: #F8F8F2 } /* Name */ .highlight .o { color: #FF4689 } /* Operator */ .highlight .x { color: #F8F8F2 } /* Other */ .highlight .p { color: #F8F8F2 } /* Punctuation */ .highlight .ch { color: #959077 } /* Comment.Hashbang */ .highlight .cm { color: #959077 } /* Comment.Multiline */ .highlight .cp { color: #959077 } /* Comment.Preproc */ .highlight .cpf { color: #959077 } /* Comment.PreprocFile */ .highlight .c1 { color: #959077 } /* Comment.Single */ .highlight .cs { color: #959077 } /* Comment.Special */ .highlight .gd { color: #FF4689 } /* Generic.Deleted */ .highlight .ge { color: #F8F8F2; font-style: italic } /* Generic.Emph */ .highlight .ges { color: #F8F8F2; font-weight: bold; font-style: italic } /* Generic.EmphStrong */ .highlight .gr { color: #F8F8F2 } /* Generic.Error */ .highlight .gh { color: #F8F8F2 } /* Generic.Heading */ .highlight .gi { color: #A6E22E } /* Generic.Inserted */ .highlight .go { color: #66D9EF } /* Generic.Output */ .highlight .gp { color: #FF4689; font-weight: bold } /* Generic.Prompt */ .highlight .gs { color: #F8F8F2; font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #959077 } /* Generic.Subheading */ .highlight .gt { color: #F8F8F2 } /* Generic.Traceback */ .highlight .kc { color: #66D9EF } /* Keyword.Constant */ .highlight .kd { color: #66D9EF } /* Keyword.Declaration */ .highlight .kn { color: #FF4689 } /* Keyword.Namespace */ .highlight .kp { color: #66D9EF } /* Keyword.Pseudo */ .highlight .kr { color: #66D9EF } /* Keyword.Reserved */ .highlight .kt { color: #66D9EF } /* Keyword.Type */ .highlight .ld { color: #E6DB74 } /* Literal.Date */ .highlight .m { color: #AE81FF } /* Literal.Number */ .highlight .s { color: #E6DB74 } /* Literal.String */ .highlight .na { color: #A6E22E } /* Name.Attribute */ .highlight .nb { color: #F8F8F2 } /* Name.Builtin */ .highlight .nc { color: #A6E22E } /* Name.Class */ .highlight .no { color: #66D9EF } /* Name.Constant */ .highlight .nd { color: #A6E22E } /* Name.Decorator */ .highlight .ni { color: #F8F8F2 } /* Name.Entity */ .highlight .ne { color: #A6E22E } /* Name.Exception */ .highlight .nf { color: #A6E22E } /* Name.Function */ .highlight .nl { color: #F8F8F2 } /* Name.Label */ .highlight .nn { color: #F8F8F2 } /* Name.Namespace */ .highlight .nx { color: #A6E22E } /* Name.Other */ .highlight .py { color: #F8F8F2 } /* Name.Property */ .highlight .nt { color: #FF4689 } /* Name.Tag */ .highlight .nv { color: #F8F8F2 } /* Name.Variable */ .highlight .ow { color: #FF4689 } /* Operator.Word */ .highlight .pm { color: #F8F8F2 } /* Punctuation.Marker */ .highlight .w { color: #F8F8F2 } /* Text.Whitespace */ .highlight .mb { color: #AE81FF } /* Literal.Number.Bin */ .highlight .mf { color: #AE81FF } /* Literal.Number.Float */ .highlight .mh { color: #AE81FF } /* Literal.Number.Hex */ .highlight .mi { color: #AE81FF } /* Literal.Number.Integer */ .highlight .mo { color: #AE81FF } /* Literal.Number.Oct */ .highlight .sa { color: #E6DB74 } /* Literal.String.Affix */ .highlight .sb { color: #E6DB74 } /* Literal.String.Backtick */ .highlight .sc { color: #E6DB74 } /* Literal.String.Char */ .highlight .dl { color: #E6DB74 } /* Literal.String.Delimiter */ .highlight .sd { color: #E6DB74 } /* Literal.String.Doc */ .highlight .s2 { color: #E6DB74 } /* Literal.String.Double */ .highlight .se { color: #AE81FF } /* Literal.String.Escape */ .highlight .sh { color: #E6DB74 } /* Literal.String.Heredoc */ .highlight .si { color: #E6DB74 } /* Literal.String.Interpol */ .highlight .sx { color: #E6DB74 } /* Literal.String.Other */ .highlight .sr { color: #E6DB74 } /* Literal.String.Regex */ .highlight .s1 { color: #E6DB74 } /* Literal.String.Single */ .highlight .ss { color: #E6DB74 } /* Literal.String.Symbol */ .highlight .bp { color: #F8F8F2 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #A6E22E } /* Name.Function.Magic */ .highlight .vc { color: #F8F8F2 } /* Name.Variable.Class */ .highlight .vg { color: #F8F8F2 } /* Name.Variable.Global */ .highlight .vi { color: #F8F8F2 } /* Name.Variable.Instance */ .highlight .vm { color: #F8F8F2 } /* Name.Variable.Magic */ .highlight .il { color: #AE81FF } /* Literal.Number.Integer.Long */ } @media (prefers-color-scheme: light) { pre { line-height: 125%; } td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; } span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; } td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; } span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; } .highlight .hll { background-color: #ffffcc } .highlight .c { color: #888 } /* Comment */ .highlight .err { color: #A61717; background-color: #E3D2D2 } /* Error */ .highlight .k { color: #080; font-weight: bold } /* Keyword */ .highlight .ch { color: #888 } /* Comment.Hashbang */ .highlight .cm { color: #888 } /* Comment.Multiline */ .highlight .cp { color: #C00; font-weight: bold } /* Comment.Preproc */ .highlight .cpf { color: #888 } /* Comment.PreprocFile */ .highlight .c1 { color: #888 } /* Comment.Single */ .highlight .cs { color: #C00; font-weight: bold; background-color: #FFF0F0 } /* Comment.Special */ .highlight .gd { color: #000; background-color: #FDD } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */ .highlight .gr { color: #A00 } /* Generic.Error */ .highlight .gh { color: #333 } /* Generic.Heading */ .highlight .gi { color: #000; background-color: #DFD } /* Generic.Inserted */ .highlight .go { color: #888 } /* Generic.Output */ .highlight .gp { color: #555 } /* Generic.Prompt */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #666 } /* Generic.Subheading */ .highlight .gt { color: #A00 } /* Generic.Traceback */ .highlight .kc { color: #080; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #080; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #080; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #080 } /* Keyword.Pseudo */ .highlight .kr { color: #080; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #00D; font-weight: bold } /* Literal.Number */ .highlight .s { color: #D20; background-color: #FFF0F0 } /* Literal.String */ .highlight .na { color: #369 } /* Name.Attribute */ .highlight .nb { color: #038 } /* Name.Builtin */ .highlight .nc { color: #B06; font-weight: bold } /* Name.Class */ .highlight .no { color: #036; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555 } /* Name.Decorator */ .highlight .ne { color: #B06; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #06B; font-weight: bold } /* Name.Function */ .highlight .nl { color: #369; font-style: italic } /* Name.Label */ .highlight .nn { color: #B06; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #369; font-weight: bold } /* Name.Property */ .highlight .nt { color: #B06; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #369 } /* Name.Variable */ .highlight .ow { color: #080 } /* Operator.Word */ .highlight .w { color: #BBB } /* Text.Whitespace */ .highlight .mb { color: #00D; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #00D; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #00D; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #00D; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #00D; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #D20; background-color: #FFF0F0 } /* Literal.String.Affix */ .highlight .sb { color: #D20; background-color: #FFF0F0 } /* Literal.String.Backtick */ .highlight .sc { color: #D20; background-color: #FFF0F0 } /* Literal.String.Char */ .highlight .dl { color: #D20; background-color: #FFF0F0 } /* Literal.String.Delimiter */ .highlight .sd { color: #D20; background-color: #FFF0F0 } /* Literal.String.Doc */ .highlight .s2 { color: #D20; background-color: #FFF0F0 } /* Literal.String.Double */ .highlight .se { color: #04D; background-color: #FFF0F0 } /* Literal.String.Escape */ .highlight .sh { color: #D20; background-color: #FFF0F0 } /* Literal.String.Heredoc */ .highlight .si { color: #33B; background-color: #FFF0F0 } /* Literal.String.Interpol */ .highlight .sx { color: #2B2; background-color: #F0FFF0 } /* Literal.String.Other */ .highlight .sr { color: #080; background-color: #FFF0FF } /* Literal.String.Regex */ .highlight .s1 { color: #D20; background-color: #FFF0F0 } /* Literal.String.Single */ .highlight .ss { color: #A60; background-color: #FFF0F0 } /* Literal.String.Symbol */ .highlight .bp { color: #038 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #06B; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #369 } /* Name.Variable.Class */ .highlight .vg { color: #D70 } /* Name.Variable.Global */ .highlight .vi { color: #33B } /* Name.Variable.Instance */ .highlight .vm { color: #369 } /* Name.Variable.Magic */ .highlight .il { color: #00D; font-weight: bold } /* Literal.Number.Integer.Long */ } 
/* Test STT_GNU_IFUNC symbols in PIE:

   1. Direct function call.
   2. Function pointer.
   3. Reference from a shared library.
 */

#include <stdlib.h>
#include "ifunc-sel.h"

typedef int (*foo_p) (void);
extern foo_p foo_ptr;

static int
one (void)
{
  return -30;
}

void * foo_ifunc (void) __asm__ ("foo");
__asm__(".type foo, %gnu_indirect_function");

void *
inhibit_stack_protector
foo_ifunc (void)
{
  return ifunc_one (one);
}

extern int foo (void);
extern foo_p get_foo (void);
extern foo_p get_foo_p (void);

foo_p my_foo_ptr = foo;

int
main (void)
{
  foo_p p;

  p = get_foo ();
  if (p != foo)
    abort ();
  if ((*p) () != -30)
    abort ();

  p = get_foo_p ();
  if (p != foo)
    abort ();
  if ((*p) () != -30)
    abort ();

  if (foo_ptr != foo)
    abort ();
  if (my_foo_ptr != foo)
    abort ();
  if ((*foo_ptr) () != -30)
    abort ();
  if ((*my_foo_ptr) () != -30)
    abort ();
  if (foo () != -30)
    abort ();

  return 0;
}