sysdeps/aarch64/tst-auditmod26.c

   1 /* Check LD_AUDIT for aarch64 specific ABI.
   2    Copyright (C) 2022-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <assert.h>
  20 #include <link.h>
  21 #include <string.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include "tst-audit26mod.h"
  25
  26 #define TEST_NAME  "tst-audit26"
  27
  28 #define AUDIT26_COOKIE 0
  29
  30 unsigned int
  31 la_version (unsigned int v)
  32 {
  33   return v;
  34 }
  35
  36 unsigned int
  37 la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t *cookie)
  38 {
  39   const char *p = strrchr (map->l_name, '/');
  40   const char *l_name = p == NULL ? map->l_name : p + 1;
  41   uintptr_t ck = -1;
  42   if (strncmp (l_name, TEST_NAME, strlen (TEST_NAME)) == 0)
  43     ck = AUDIT26_COOKIE;
  44   *cookie = ck;
  45   printf ("objopen: %ld, %s [cookie=%ld]\n", lmid, l_name, ck);
  46   return ck == -1 ? 0 : LA_FLG_BINDFROM | LA_FLG_BINDTO;
  47 }
  48
  49 ElfW(Addr)
  50 la_aarch64_gnu_pltenter (ElfW(Sym) *sym __attribute__ ((unused)),
  51                          unsigned int ndx __attribute__ ((unused)),
  52                          uintptr_t *refcook, uintptr_t *defcook,
  53                          La_aarch64_regs *regs, unsigned int *flags,
  54                          const char *symname, long int *framesizep)
  55 {
  56   printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
  57           symname, (long int) sym->st_value, ndx, *flags);
  58
  59   if (strcmp (symname, "tst_audit26_func") == 0)
  60     {
  61       assert (regs->lr_xreg[0] == ARG1);
  62       assert (regs->lr_xreg[1] == ARG2);
  63       assert (regs->lr_xreg[2] == ARG3);
  64     }
  65   else
  66     abort ();
  67
  68   assert (regs->lr_vpcs == 0);
  69
  70   /* Clobber 'x8'.  */
  71   asm volatile ("mov x8, -1" : : : "x8");
  72
  73   *framesizep = 1024;
  74
  75   return sym->st_value;
  76 }
  77
  78 unsigned int
  79 la_aarch64_gnu_pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
  80                         uintptr_t *defcook,
  81                         const struct La_aarch64_regs *inregs,
  82                         struct La_aarch64_retval *outregs, const char *symname)
  83 {
  84   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u\n",
  85           symname, (long int) sym->st_value, ndx);
  86
  87   if (strcmp (symname, "tst_audit26_func") == 0)
  88     {
  89       assert (inregs->lr_xreg[0] == ARG1);
  90       assert (inregs->lr_xreg[1] == ARG2);
  91       assert (inregs->lr_xreg[2] == ARG3);
  92     }
  93   else
  94     abort ();
  95
  96   assert (inregs->lr_vpcs == 0);
  97   assert (outregs->lrv_vpcs == 0);
  98
  99   /* Clobber 'x8'.  */
 100   asm volatile ("mov x8, -1" : : : "x8");
 101
 102   return 0;
 103 }