sysdeps/x86_64/tst-auditmod6b.c

   1 /* Verify that changing AVX registers in audit library won't affect
   2    function parameter passing/return.  */
   3
   4 #include <dlfcn.h>
   5 #include <link.h>
   6 #include <stddef.h>
   7 #include <stdint.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include <bits/wordsize.h>
  13 #include <gnu/lib-names.h>
  14
  15 unsigned int
  16 la_version (unsigned int v)
  17 {
  18   setlinebuf (stdout);
  19
  20   printf ("version: %u\n", v);
  21
  22   char buf[20];
  23   sprintf (buf, "%u", v);
  24
  25   return v;
  26 }
  27
  28 void
  29 la_activity (uintptr_t *cookie, unsigned int flag)
  30 {
  31   if (flag == LA_ACT_CONSISTENT)
  32     printf ("activity: consistent\n");
  33   else if (flag == LA_ACT_ADD)
  34     printf ("activity: add\n");
  35   else if (flag == LA_ACT_DELETE)
  36     printf ("activity: delete\n");
  37   else
  38     printf ("activity: unknown activity %u\n", flag);
  39 }
  40
  41 char *
  42 la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
  43 {
  44   char buf[100];
  45   const char *flagstr;
  46   if (flag == LA_SER_ORIG)
  47     flagstr = "LA_SET_ORIG";
  48   else if (flag == LA_SER_LIBPATH)
  49     flagstr = "LA_SER_LIBPATH";
  50   else if (flag == LA_SER_RUNPATH)
  51     flagstr = "LA_SER_RUNPATH";
  52   else if (flag == LA_SER_CONFIG)
  53     flagstr = "LA_SER_CONFIG";
  54   else if (flag == LA_SER_DEFAULT)
  55     flagstr = "LA_SER_DEFAULT";
  56   else if (flag == LA_SER_SECURE)
  57     flagstr = "LA_SER_SECURE";
  58   else
  59     {
  60        sprintf (buf, "unknown flag %d", flag);
  61        flagstr = buf;
  62     }
  63   printf ("objsearch: %s, %s\n", name, flagstr);
  64
  65   return (char *) name;
  66 }
  67
  68 unsigned int
  69 la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
  70 {
  71   printf ("objopen: %ld, %s\n", lmid, l->l_name);
  72
  73   return 3;
  74 }
  75
  76 void
  77 la_preinit (uintptr_t *cookie)
  78 {
  79   printf ("preinit\n");
  80 }
  81
  82 unsigned int
  83 la_objclose  (uintptr_t *cookie)
  84 {
  85   printf ("objclose\n");
  86   return 0;
  87 }
  88
  89 uintptr_t
  90 la_symbind32 (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook,
  91               uintptr_t *defcook, unsigned int *flags, const char *symname)
  92 {
  93   printf ("symbind32: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
  94           symname, (long int) sym->st_value, ndx, *flags);
  95
  96   return sym->st_value;
  97 }
  98
  99 uintptr_t
 100 la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
 101               uintptr_t *defcook, unsigned int *flags, const char *symname)
 102 {
 103   printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
 104           symname, (long int) sym->st_value, ndx, *flags);
 105
 106   return sym->st_value;
 107 }
 108
 109 #include <tst-audit.h>
 110
 111 #ifdef __AVX__
 112 #include <immintrin.h>
 113 #include <cpuid.h>
 114
 115 static int avx = -1;
 116
 117 static inline int
 118 __attribute ((always_inline))
 119 check_avx (void)
 120 {
 121   if (avx == -1)
 122     {
 123       unsigned int eax, ebx, ecx, edx;
 124
 125       if (__get_cpuid (1, &eax, &ebx, &ecx, &edx)
 126           && (ecx & bit_AVX))
 127         avx = 1;
 128       else
 129         avx = 0;
 130     }
 131   return avx;
 132 }
 133 #else
 134 #include <emmintrin.h>
 135 #endif
 136
 137 ElfW(Addr)
 138 pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 139           uintptr_t *defcook, La_regs *regs, unsigned int *flags,
 140           const char *symname, long int *framesizep)
 141 {
 142   printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
 143           symname, (long int) sym->st_value, ndx, *flags);
 144
 145 #ifdef __AVX__
 146   if (check_avx () && strcmp (symname, "audit_test") == 0)
 147     {
 148       int i;
 149
 150       __m128i xmm = _mm_setzero_si128 ();
 151       for (i = 0; i < 8; i++)
 152         if (memcmp (&regs->lr_xmm[i], &xmm, sizeof (xmm))
 153             || memcmp (&regs->lr_vector[i], &xmm, sizeof (xmm)))
 154           abort ();
 155
 156       for (i = 0; i < 8; i += 2)
 157         {
 158           regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 1);
 159           regs->lr_vector[i].xmm[0] = regs->lr_xmm[i];
 160           regs->lr_vector[i + 1].ymm[0]
 161             = (La_x86_64_ymm) _mm256_set1_epi32 (i + 2);
 162           regs->lr_xmm[i + 1] = regs->lr_vector[i + 1].xmm[0];
 163         }
 164
 165       __m256i ymm = _mm256_set1_epi32 (-1);
 166       asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
 167       asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
 168       asm volatile ("vmovdqa %0, %%ymm2" : : "x" (ymm) : "xmm2" );
 169       asm volatile ("vmovdqa %0, %%ymm3" : : "x" (ymm) : "xmm3" );
 170       asm volatile ("vmovdqa %0, %%ymm4" : : "x" (ymm) : "xmm4" );
 171       asm volatile ("vmovdqa %0, %%ymm5" : : "x" (ymm) : "xmm5" );
 172       asm volatile ("vmovdqa %0, %%ymm6" : : "x" (ymm) : "xmm6" );
 173       asm volatile ("vmovdqa %0, %%ymm7" : : "x" (ymm) : "xmm7" );
 174
 175       *framesizep = 1024;
 176     }
 177 #endif
 178
 179   return sym->st_value;
 180 }
 181
 182 unsigned int
 183 pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 184          uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
 185          const char *symname)
 186 {
 187   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
 188           symname, (long int) sym->st_value, ndx,
 189           (ptrdiff_t) outregs->int_retval);
 190
 191 #ifdef __AVX__
 192   if (check_avx () && strcmp (symname, "audit_test") == 0)
 193     {
 194       int i;
 195
 196       __m128i xmm = _mm_setzero_si128 ();
 197       if (memcmp (&outregs->lrv_xmm0, &xmm, sizeof (xmm))
 198           || memcmp (&outregs->lrv_vector0, &xmm, sizeof (xmm)))
 199         abort ();
 200
 201       __m256i ymm;
 202
 203       for (i = 0; i < 8; i += 2)
 204         {
 205           xmm = _mm_set1_epi32 (i + 0x100);
 206           if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm))
 207               || memcmp (&inregs->lr_vector[i], &xmm, sizeof (xmm)))
 208             abort ();
 209
 210           ymm = _mm256_set1_epi32 (i + 0x101);
 211           if (memcmp (&inregs->lr_xmm[i + 1],
 212                       &inregs->lr_vector[i + 1].xmm[0], sizeof (xmm))
 213               || memcmp (&inregs->lr_vector[i + 1], &ymm, sizeof (ymm)))
 214             abort ();
 215         }
 216
 217       outregs->lrv_vector0.ymm[0]
 218         = (La_x86_64_ymm) _mm256_set1_epi32 (0x12349876);
 219
 220       ymm = _mm256_set1_epi32 (-1);
 221       asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
 222       asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
 223     }
 224 #endif
 225
 226   return 0;
 227 }