none/tests/amd64/ssse3_misaligned.c

   1
   2 #include "tests/malloc.h"
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <signal.h>
   8
   9 void maybe_fault ( int delta )
  10 {
  11    char* x = memalign16(32);
  12    memset(x, 0, 32);
  13    __asm__ __volatile__(
  14       "pabsb (%0),%%xmm7"
  15       : /*out*/ : /*in*/ "r"(x+delta) : /*trash*/"xmm7" );
  16    free(x);
  17 }
  18
  19 void handler ( int signo )
  20 {
  21 #if defined(__FreeBSD__)
  22    assert(signo == SIGBUS);
  23 #else
  24    assert(signo == SIGSEGV);
  25 #endif
  26    fprintf(stderr, "three\n");
  27    exit(0);
  28 }
  29
  30 int main ( void )
  31 {
  32 #if defined(__FreeBSD__)
  33    signal(SIGBUS, handler);
  34 #else
  35    signal(SIGSEGV, handler);
  36 #endif
  37    fprintf(stderr, "you should see: \"one\\ntwo\\nthree\\n\"\n");
  38    fprintf(stderr, "one\n");
  39    maybe_fault(0);
  40    fprintf(stderr, "two\n");
  41    maybe_fault(5);
  42    fprintf(stderr, "test failed! you shouldn't see this\n");
  43    return 0;
  44 }