232 lines
6.2 KiB
C
232 lines
6.2 KiB
C
/* Copyright (C) 2012-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Verify that changing AVX512 registers in audit library won't affect
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function parameter passing/return. */
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#include <dlfcn.h>
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#include <link.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <bits/wordsize.h>
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#include <gnu/lib-names.h>
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unsigned int
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la_version (unsigned int v)
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{
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setlinebuf (stdout);
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printf ("version: %u\n", v);
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char buf[20];
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sprintf (buf, "%u", v);
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return v;
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}
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void
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la_activity (uintptr_t *cookie, unsigned int flag)
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{
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if (flag == LA_ACT_CONSISTENT)
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printf ("activity: consistent\n");
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else if (flag == LA_ACT_ADD)
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printf ("activity: add\n");
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else if (flag == LA_ACT_DELETE)
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printf ("activity: delete\n");
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else
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printf ("activity: unknown activity %u\n", flag);
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}
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char *
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la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
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{
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char buf[100];
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const char *flagstr;
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if (flag == LA_SER_ORIG)
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flagstr = "LA_SET_ORIG";
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else if (flag == LA_SER_LIBPATH)
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flagstr = "LA_SER_LIBPATH";
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else if (flag == LA_SER_RUNPATH)
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flagstr = "LA_SER_RUNPATH";
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else if (flag == LA_SER_CONFIG)
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flagstr = "LA_SER_CONFIG";
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else if (flag == LA_SER_DEFAULT)
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flagstr = "LA_SER_DEFAULT";
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else if (flag == LA_SER_SECURE)
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flagstr = "LA_SER_SECURE";
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else
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{
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sprintf (buf, "unknown flag %d", flag);
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flagstr = buf;
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}
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printf ("objsearch: %s, %s\n", name, flagstr);
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return (char *) name;
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}
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unsigned int
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la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
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{
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printf ("objopen: %ld, %s\n", lmid, l->l_name);
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return 3;
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}
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void
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la_preinit (uintptr_t *cookie)
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{
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printf ("preinit\n");
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}
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unsigned int
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la_objclose (uintptr_t *cookie)
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{
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printf ("objclose\n");
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return 0;
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}
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uintptr_t
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la_symbind32 (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook,
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uintptr_t *defcook, unsigned int *flags, const char *symname)
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{
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printf ("symbind32: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
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symname, (long int) sym->st_value, ndx, *flags);
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return sym->st_value;
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}
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uintptr_t
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la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
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uintptr_t *defcook, unsigned int *flags, const char *symname)
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{
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printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
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symname, (long int) sym->st_value, ndx, *flags);
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return sym->st_value;
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}
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#include <tst-audit.h>
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#ifdef __AVX512F__
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#include <immintrin.h>
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#include <cpuid.h>
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static int
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check_avx512 (void)
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{
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unsigned int eax, ebx, ecx, edx;
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if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0
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|| (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE))
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return 0;
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__cpuid_count (7, 0, eax, ebx, ecx, edx);
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if (!(ebx & bit_AVX512F))
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return 0;
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asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0));
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/* Verify that ZMM, YMM and XMM states are enabled. */
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return (eax & 0xe6) == 0xe6;
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}
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#else
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#include <emmintrin.h>
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#endif
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ElfW(Addr)
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pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
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uintptr_t *defcook, La_regs *regs, unsigned int *flags,
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const char *symname, long int *framesizep)
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{
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printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
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symname, (long int) sym->st_value, ndx, *flags);
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#ifdef __AVX512F__
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if (check_avx512 () && strcmp (symname, "audit_test") == 0)
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{
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__m512i zero = _mm512_setzero_si512 ();
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if (memcmp (®s->lr_vector[0], &zero, sizeof (zero))
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|| memcmp (®s->lr_vector[1], &zero, sizeof (zero))
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|| memcmp (®s->lr_vector[2], &zero, sizeof (zero))
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|| memcmp (®s->lr_vector[3], &zero, sizeof (zero))
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|| memcmp (®s->lr_vector[4], &zero, sizeof (zero))
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|| memcmp (®s->lr_vector[5], &zero, sizeof (zero))
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|| memcmp (®s->lr_vector[6], &zero, sizeof (zero))
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|| memcmp (®s->lr_vector[7], &zero, sizeof (zero)))
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abort ();
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for (int i = 0; i < 8; i++)
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regs->lr_vector[i].zmm[0]
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= (La_x86_64_zmm) _mm512_set1_epi64 (i + 1);
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__m512i zmm = _mm512_set1_epi64 (-1);
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asm volatile ("vmovdqa64 %0, %%zmm0" : : "x" (zmm) : "xmm0" );
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asm volatile ("vmovdqa64 %0, %%zmm1" : : "x" (zmm) : "xmm1" );
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asm volatile ("vmovdqa64 %0, %%zmm2" : : "x" (zmm) : "xmm2" );
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asm volatile ("vmovdqa64 %0, %%zmm3" : : "x" (zmm) : "xmm3" );
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asm volatile ("vmovdqa64 %0, %%zmm4" : : "x" (zmm) : "xmm4" );
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asm volatile ("vmovdqa64 %0, %%zmm5" : : "x" (zmm) : "xmm5" );
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asm volatile ("vmovdqa64 %0, %%zmm6" : : "x" (zmm) : "xmm6" );
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asm volatile ("vmovdqa64 %0, %%zmm7" : : "x" (zmm) : "xmm7" );
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*framesizep = 1024;
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}
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#endif
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return sym->st_value;
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}
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unsigned int
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pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
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uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
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const char *symname)
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{
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printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
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symname, (long int) sym->st_value, ndx,
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(ptrdiff_t) outregs->int_retval);
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#ifdef __AVX512F__
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if (check_avx512 () && strcmp (symname, "audit_test") == 0)
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{
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__m512i zero = _mm512_setzero_si512 ();
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if (memcmp (&outregs->lrv_vector0, &zero, sizeof (zero)))
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abort ();
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for (int i = 0; i < 8; i++)
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{
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__m512i zmm = _mm512_set1_epi64 (i + 1);
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if (memcmp (&inregs->lr_vector[i], &zmm, sizeof (zmm)) != 0)
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abort ();
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}
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outregs->lrv_vector0.zmm[0]
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= (La_x86_64_zmm) _mm512_set1_epi64 (0x12349876);
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__m512i zmm = _mm512_set1_epi64 (-1);
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asm volatile ("vmovdqa64 %0, %%zmm0" : : "x" (zmm) : "xmm0" );
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asm volatile ("vmovdqa64 %0, %%zmm1" : : "x" (zmm) : "xmm1" );
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}
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#endif
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return 0;
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}
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