diff options
Diffstat (limited to 'elf/tst-auditmod4b.c')
| -rw-r--r-- | elf/tst-auditmod4b.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/elf/tst-auditmod4b.c b/elf/tst-auditmod4b.c new file mode 100644 index 0000000000..a6d3c6a6c5 --- /dev/null +++ b/elf/tst-auditmod4b.c @@ -0,0 +1,206 @@ +/* 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; +} + +#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 +#define int_retval lrv_rax + +#include <tst-audit.h> + +#ifdef __AVX__ +#include <immintrin.h> +#include <cpuid.h> + +static int avx = -1; + +static 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, 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; +} |