2009-08-08 19:54:42 +02:00
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/* Verify that changing AVX 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 <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_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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2012-04-14 01:24:17 +02:00
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#ifndef __ILP32__
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2012-03-22 01:14:49 +01:00
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# define pltenter la_x86_64_gnu_pltenter
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# define pltexit la_x86_64_gnu_pltexit
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# define La_regs La_x86_64_regs
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# define La_retval La_x86_64_retval
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#else
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# define pltenter la_x32_gnu_pltenter
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# define pltexit la_x32_gnu_pltexit
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# define La_regs La_x32_regs
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# define La_retval La_x32_retval
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#endif
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2009-08-08 19:54:42 +02:00
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#define int_retval lrv_rax
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#include <tst-audit.h>
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#ifdef __AVX__
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#include <immintrin.h>
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#include <cpuid.h>
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static int avx = -1;
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2011-12-23 17:19:53 +01:00
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static inline int
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2009-08-08 19:54:42 +02:00
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__attribute ((always_inline))
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check_avx (void)
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{
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if (avx == -1)
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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)
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&& (ecx & bit_AVX))
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avx = 1;
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else
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avx = 0;
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}
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return avx;
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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 __AVX__
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if (check_avx () && strcmp (symname, "audit_test") == 0)
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{
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int i;
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__m128i xmm = _mm_setzero_si128 ();
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for (i = 0; i < 8; i++)
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if (memcmp (®s->lr_xmm[i], &xmm, sizeof (xmm))
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|| memcmp (®s->lr_vector[i], &xmm, sizeof (xmm)))
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abort ();
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for (i = 0; i < 8; i += 2)
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{
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regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 0x100);
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regs->lr_vector[i + 1].ymm[0]
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= (La_x86_64_ymm) _mm256_set1_epi32 (i + 0x101);
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}
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__m256i ymm = _mm256_set1_epi32 (-1);
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asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
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asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
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asm volatile ("vmovdqa %0, %%ymm2" : : "x" (ymm) : "xmm2" );
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asm volatile ("vmovdqa %0, %%ymm3" : : "x" (ymm) : "xmm3" );
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asm volatile ("vmovdqa %0, %%ymm4" : : "x" (ymm) : "xmm4" );
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asm volatile ("vmovdqa %0, %%ymm5" : : "x" (ymm) : "xmm5" );
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asm volatile ("vmovdqa %0, %%ymm6" : : "x" (ymm) : "xmm6" );
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asm volatile ("vmovdqa %0, %%ymm7" : : "x" (ymm) : "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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2012-03-22 01:14:49 +01:00
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symname, (long int) sym->st_value, ndx,
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(ptrdiff_t) outregs->int_retval);
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2009-08-08 19:54:42 +02:00
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#ifdef __AVX__
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if (check_avx () && strcmp (symname, "audit_test") == 0)
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{
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int i;
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__m128i xmm = _mm_setzero_si128 ();
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if (memcmp (&outregs->lrv_xmm0, &xmm, sizeof (xmm))
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|| memcmp (&outregs->lrv_vector0, &xmm, sizeof (xmm)))
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abort ();
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__m256i ymm;
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for (i = 0; i < 8; i += 2)
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{
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xmm = _mm_set1_epi32 (i + 0x100);
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if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm))
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|| memcmp (&inregs->lr_vector[i], &xmm, sizeof (xmm)))
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abort ();
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ymm = _mm256_set1_epi32 (i + 0x101);
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if (memcmp (&inregs->lr_xmm[i + 1],
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&inregs->lr_vector[i + 1].xmm[0], sizeof (xmm))
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|| memcmp (&inregs->lr_vector[i + 1], &ymm, sizeof (ymm)))
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abort ();
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}
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outregs->lrv_vector0.ymm[0]
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= (La_x86_64_ymm) _mm256_set1_epi32 (0x98abcdef);
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ymm = _mm256_set1_epi32 (-1);
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asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
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asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
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}
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#endif
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return 0;
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}
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