diff options
Diffstat (limited to 'elf/tst-auditmod5b.c')
| -rw-r--r-- | elf/tst-auditmod5b.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/elf/tst-auditmod5b.c b/elf/tst-auditmod5b.c new file mode 100644 index 0000000..7e1e941 --- /dev/null +++ b/elf/tst-auditmod5b.c @@ -0,0 +1,178 @@ +/* Verify that changing xmm 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> +#include <emmintrin.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> + +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); + + __m128i minusone = _mm_set1_epi32 (-1); + + if (strcmp (symname, "audit_test") == 0) + { + __m128i zero = _mm_setzero_si128 (); + if (memcmp (®s->lr_xmm[0], &zero, sizeof (zero)) + || memcmp (®s->lr_xmm[1], &zero, sizeof (zero)) + || memcmp (®s->lr_xmm[2], &zero, sizeof (zero)) + || memcmp (®s->lr_xmm[3], &zero, sizeof (zero)) + || memcmp (®s->lr_xmm[4], &zero, sizeof (zero)) + || memcmp (®s->lr_xmm[5], &zero, sizeof (zero)) + || memcmp (®s->lr_xmm[6], &zero, sizeof (zero)) + || memcmp (®s->lr_xmm[7], &zero, sizeof (zero))) + abort (); + + for (int i = 0; i < 8; i++) + regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 1); + + *framesizep = 1024; + } + + asm volatile ("movdqa %0, %%xmm0" : : "x" (minusone) : "xmm0" ); + asm volatile ("movdqa %0, %%xmm1" : : "x" (minusone) : "xmm1" ); + asm volatile ("movdqa %0, %%xmm2" : : "x" (minusone) : "xmm2" ); + asm volatile ("movdqa %0, %%xmm3" : : "x" (minusone) : "xmm3" ); + asm volatile ("movdqa %0, %%xmm4" : : "x" (minusone) : "xmm4" ); + asm volatile ("movdqa %0, %%xmm5" : : "x" (minusone) : "xmm5" ); + asm volatile ("movdqa %0, %%xmm6" : : "x" (minusone) : "xmm6" ); + asm volatile ("movdqa %0, %%xmm7" : : "x" (minusone) : "xmm7" ); + + 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); + + __m128i xmm; + + if (strcmp (symname, "audit_test") == 0) + { + __m128i zero = _mm_setzero_si128 (); + if (memcmp (&outregs->lrv_xmm0, &zero, sizeof (zero))) + abort (); + + for (int i = 0; i < 8; i++) + { + xmm = _mm_set1_epi32 (i + 1); + if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm)) != 0) + abort (); + } + + outregs->lrv_xmm0 = (La_x86_64_xmm) _mm_set1_epi32 (0x12349876); + } + + xmm = _mm_set1_epi32 (-1); + asm volatile ("movdqa %0, %%xmm0" : : "x" (xmm) : "xmm0" ); + asm volatile ("movdqa %0, %%xmm1" : : "x" (xmm) : "xmm1" ); + + return 0; +} |