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/* Verify that changing AVX registers in audit library won't affect
function parameter passing/return. */
#include <dlfcn.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <bits/wordsize.h>
#include <gnu/lib-names.h>
unsigned int
la_version (unsigned int v)
{
setlinebuf (stdout);
printf ("version: %u\n", v);
char buf[20];
sprintf (buf, "%u", v);
return v;
}
void
la_activity (uintptr_t *cookie, unsigned int flag)
{
if (flag == LA_ACT_CONSISTENT)
printf ("activity: consistent\n");
else if (flag == LA_ACT_ADD)
printf ("activity: add\n");
else if (flag == LA_ACT_DELETE)
printf ("activity: delete\n");
else
printf ("activity: unknown activity %u\n", flag);
}
char *
la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
{
char buf[100];
const char *flagstr;
if (flag == LA_SER_ORIG)
flagstr = "LA_SET_ORIG";
else if (flag == LA_SER_LIBPATH)
flagstr = "LA_SER_LIBPATH";
else if (flag == LA_SER_RUNPATH)
flagstr = "LA_SER_RUNPATH";
else if (flag == LA_SER_CONFIG)
flagstr = "LA_SER_CONFIG";
else if (flag == LA_SER_DEFAULT)
flagstr = "LA_SER_DEFAULT";
else if (flag == LA_SER_SECURE)
flagstr = "LA_SER_SECURE";
else
{
sprintf (buf, "unknown flag %d", flag);
flagstr = buf;
}
printf ("objsearch: %s, %s\n", name, flagstr);
return (char *) name;
}
unsigned int
la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
{
printf ("objopen: %ld, %s\n", lmid, l->l_name);
return 3;
}
void
la_preinit (uintptr_t *cookie)
{
printf ("preinit\n");
}
unsigned int
la_objclose (uintptr_t *cookie)
{
printf ("objclose\n");
return 0;
}
uintptr_t
la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, unsigned int *flags, const char *symname)
{
printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
symname, (long int) sym->st_value, ndx, *flags);
return sym->st_value;
}
# ifndef __ILP32__
# define pltenter la_x86_64_gnu_pltenter
# define pltexit la_x86_64_gnu_pltexit
# define La_regs La_x86_64_regs
# define La_retval La_x86_64_retval
#else
# define pltenter la_x32_gnu_pltenter
# define pltexit la_x32_gnu_pltexit
# define La_regs La_x32_regs
# define La_retval La_x32_retval
#endif
#define int_retval lrv_rax
#include <tst-audit.h>
#ifdef __AVX__
#include <immintrin.h>
#include <cpuid.h>
static int avx = -1;
static inline int
__attribute ((always_inline))
check_avx (void)
{
if (avx == -1)
{
unsigned int eax, ebx, ecx, edx;
if (__get_cpuid (1, &eax, &ebx, &ecx, &edx)
&& (ecx & bit_AVX))
avx = 1;
else
avx = 0;
}
return avx;
}
#else
#include <emmintrin.h>
#endif
ElfW(Addr)
pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, La_regs *regs, unsigned int *flags,
const char *symname, long int *framesizep)
{
printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
symname, (long int) sym->st_value, ndx, *flags);
#ifdef __AVX__
if (check_avx () && strcmp (symname, "audit_test") == 0)
{
__m256i zero = _mm256_setzero_si256 ();
if (memcmp (®s->lr_vector[0], &zero, sizeof (zero))
|| memcmp (®s->lr_vector[1], &zero, sizeof (zero))
|| memcmp (®s->lr_vector[2], &zero, sizeof (zero))
|| memcmp (®s->lr_vector[3], &zero, sizeof (zero))
|| memcmp (®s->lr_vector[4], &zero, sizeof (zero))
|| memcmp (®s->lr_vector[5], &zero, sizeof (zero))
|| memcmp (®s->lr_vector[6], &zero, sizeof (zero))
|| memcmp (®s->lr_vector[7], &zero, sizeof (zero)))
abort ();
for (int i = 0; i < 8; i++)
regs->lr_vector[i].ymm[0]
= (La_x86_64_ymm) _mm256_set1_epi32 (i + 1);
__m256i ymm = _mm256_set1_epi32 (-1);
asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
asm volatile ("vmovdqa %0, %%ymm2" : : "x" (ymm) : "xmm2" );
asm volatile ("vmovdqa %0, %%ymm3" : : "x" (ymm) : "xmm3" );
asm volatile ("vmovdqa %0, %%ymm4" : : "x" (ymm) : "xmm4" );
asm volatile ("vmovdqa %0, %%ymm5" : : "x" (ymm) : "xmm5" );
asm volatile ("vmovdqa %0, %%ymm6" : : "x" (ymm) : "xmm6" );
asm volatile ("vmovdqa %0, %%ymm7" : : "x" (ymm) : "xmm7" );
*framesizep = 1024;
}
#endif
return sym->st_value;
}
unsigned int
pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
const char *symname)
{
printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
symname, (long int) sym->st_value, ndx,
(ptrdiff_t) outregs->int_retval);
#ifdef __AVX__
if (check_avx () && strcmp (symname, "audit_test") == 0)
{
__m256i zero = _mm256_setzero_si256 ();
if (memcmp (&outregs->lrv_vector0, &zero, sizeof (zero)))
abort ();
for (int i = 0; i < 8; i++)
{
__m256i ymm = _mm256_set1_epi32 (i + 1);
if (memcmp (&inregs->lr_vector[i], &ymm, sizeof (ymm)) != 0)
abort ();
}
outregs->lrv_vector0.ymm[0]
= (La_x86_64_ymm) _mm256_set1_epi32 (0x12349876);
__m256i ymm = _mm256_set1_epi32 (-1);
asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
}
#endif
return 0;
}
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