sysdeps/x86_64/tst-auditmod10b.c

   1 /* Copyright (C) 2012-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 /* Verify that changing AVX512 registers in audit library won't affect
  19    function parameter passing/return.  */
  20
  21 #include <dlfcn.h>
  22 #include <stdint.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27 #include <bits/wordsize.h>
  28 #include <gnu/lib-names.h>
  29
  30 unsigned int
  31 la_version (unsigned int v)
  32 {
  33   setlinebuf (stdout);
  34
  35   printf ("version: %u\n", v);
  36
  37   char buf[20];
  38   sprintf (buf, "%u", v);
  39
  40   return v;
  41 }
  42
  43 void
  44 la_activity (uintptr_t *cookie, unsigned int flag)
  45 {
  46   if (flag == LA_ACT_CONSISTENT)
  47     printf ("activity: consistent\n");
  48   else if (flag == LA_ACT_ADD)
  49     printf ("activity: add\n");
  50   else if (flag == LA_ACT_DELETE)
  51     printf ("activity: delete\n");
  52   else
  53     printf ("activity: unknown activity %u\n", flag);
  54 }
  55
  56 char *
  57 la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
  58 {
  59   char buf[100];
  60   const char *flagstr;
  61   if (flag == LA_SER_ORIG)
  62     flagstr = "LA_SET_ORIG";
  63   else if (flag == LA_SER_LIBPATH)
  64     flagstr = "LA_SER_LIBPATH";
  65   else if (flag == LA_SER_RUNPATH)
  66     flagstr = "LA_SER_RUNPATH";
  67   else if (flag == LA_SER_CONFIG)
  68     flagstr = "LA_SER_CONFIG";
  69   else if (flag == LA_SER_DEFAULT)
  70     flagstr = "LA_SER_DEFAULT";
  71   else if (flag == LA_SER_SECURE)
  72     flagstr = "LA_SER_SECURE";
  73   else
  74     {
  75        sprintf (buf, "unknown flag %d", flag);
  76        flagstr = buf;
  77     }
  78   printf ("objsearch: %s, %s\n", name, flagstr);
  79
  80   return (char *) name;
  81 }
  82
  83 unsigned int
  84 la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
  85 {
  86   printf ("objopen: %ld, %s\n", lmid, l->l_name);
  87
  88   return 3;
  89 }
  90
  91 void
  92 la_preinit (uintptr_t *cookie)
  93 {
  94   printf ("preinit\n");
  95 }
  96
  97 unsigned int
  98 la_objclose  (uintptr_t *cookie)
  99 {
 100   printf ("objclose\n");
 101   return 0;
 102 }
 103
 104 uintptr_t
 105 la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
 106               uintptr_t *defcook, unsigned int *flags, const char *symname)
 107 {
 108   printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
 109           symname, (long int) sym->st_value, ndx, *flags);
 110
 111   return sym->st_value;
 112 }
 113
 114 #include <tst-audit.h>
 115
 116 #ifdef __AVX512F__
 117 #include <immintrin.h>
 118 #include <cpuid.h>
 119
 120 static int
 121 check_avx512 (void)
 122 {
 123   unsigned int eax, ebx, ecx, edx;
 124
 125   if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0
 126       || (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE))
 127     return 0;
 128
 129   __cpuid_count (7, 0, eax, ebx, ecx, edx);
 130   if (!(ebx & bit_AVX512F))
 131     return 0;
 132
 133   asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0));
 134
 135   /* Verify that ZMM, YMM and XMM states are enabled.  */
 136   return (eax & 0xe6) == 0xe6;
 137 }
 138
 139 #else
 140 #include <emmintrin.h>
 141 #endif
 142
 143 ElfW(Addr)
 144 pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 145           uintptr_t *defcook, La_regs *regs, unsigned int *flags,
 146           const char *symname, long int *framesizep)
 147 {
 148   printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
 149           symname, (long int) sym->st_value, ndx, *flags);
 150
 151 #ifdef __AVX512F__
 152   if (check_avx512 () && strcmp (symname, "audit_test") == 0)
 153     {
 154       __m512i zero = _mm512_setzero_si512 ();
 155       if (memcmp (&regs->lr_vector[0], &zero, sizeof (zero))
 156           || memcmp (&regs->lr_vector[1], &zero, sizeof (zero))
 157           || memcmp (&regs->lr_vector[2], &zero, sizeof (zero))
 158           || memcmp (&regs->lr_vector[3], &zero, sizeof (zero))
 159           || memcmp (&regs->lr_vector[4], &zero, sizeof (zero))
 160           || memcmp (&regs->lr_vector[5], &zero, sizeof (zero))
 161           || memcmp (&regs->lr_vector[6], &zero, sizeof (zero))
 162           || memcmp (&regs->lr_vector[7], &zero, sizeof (zero)))
 163         abort ();
 164
 165       for (int i = 0; i < 8; i++)
 166         regs->lr_vector[i].zmm[0]
 167           = (La_x86_64_zmm) _mm512_set1_epi64 (i + 1);
 168
 169       __m512i zmm = _mm512_set1_epi64 (-1);
 170       asm volatile ("vmovdqa64 %0, %%zmm0" : : "x" (zmm) : "xmm0" );
 171       asm volatile ("vmovdqa64 %0, %%zmm1" : : "x" (zmm) : "xmm1" );
 172       asm volatile ("vmovdqa64 %0, %%zmm2" : : "x" (zmm) : "xmm2" );
 173       asm volatile ("vmovdqa64 %0, %%zmm3" : : "x" (zmm) : "xmm3" );
 174       asm volatile ("vmovdqa64 %0, %%zmm4" : : "x" (zmm) : "xmm4" );
 175       asm volatile ("vmovdqa64 %0, %%zmm5" : : "x" (zmm) : "xmm5" );
 176       asm volatile ("vmovdqa64 %0, %%zmm6" : : "x" (zmm) : "xmm6" );
 177       asm volatile ("vmovdqa64 %0, %%zmm7" : : "x" (zmm) : "xmm7" );
 178
 179       *framesizep = 1024;
 180     }
 181 #endif
 182
 183   return sym->st_value;
 184 }
 185
 186 unsigned int
 187 pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 188          uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
 189          const char *symname)
 190 {
 191   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
 192           symname, (long int) sym->st_value, ndx,
 193           (ptrdiff_t) outregs->int_retval);
 194
 195 #ifdef __AVX512F__
 196   if (check_avx512 () && strcmp (symname, "audit_test") == 0)
 197     {
 198       __m512i zero = _mm512_setzero_si512 ();
 199       if (memcmp (&outregs->lrv_vector0, &zero, sizeof (zero)))
 200         abort ();
 201
 202       for (int i = 0; i < 8; i++)
 203         {
 204           __m512i zmm = _mm512_set1_epi64 (i + 1);
 205           if (memcmp (&inregs->lr_vector[i], &zmm, sizeof (zmm)) != 0)
 206             abort ();
 207         }
 208
 209       outregs->lrv_vector0.zmm[0]
 210         = (La_x86_64_zmm) _mm512_set1_epi64 (0x12349876);
 211
 212       __m512i zmm = _mm512_set1_epi64 (-1);
 213       asm volatile ("vmovdqa64 %0, %%zmm0" : : "x" (zmm) : "xmm0" );
 214       asm volatile ("vmovdqa64 %0, %%zmm1" : : "x" (zmm) : "xmm1" );
 215     }
 216 #endif
 217
 218   return 0;
 219 }