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a bounds checking code for the ARCH=x86_64

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This commit is contained in:
seyko
2015-04-10 15:17:22 +03:00
parent e92dc595cd
commit 559675b90a
8 changed files with 319 additions and 64 deletions
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61
tests/boundtest.c
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@ -50,12 +50,15 @@ int test4(void)
int i, sum = 0;
int *tab4;
fprintf(stderr, "%s start\n", __FUNCTION__);
tab4 = malloc(20 * sizeof(int));
for(i=0;i<20;i++) {
sum += tab4[i];
}
free(tab4);
fprintf(stderr, "%s end\n", __FUNCTION__);
return sum;
}
@ -65,12 +68,15 @@ int test5(void)
int i, sum = 0;
int *tab4;
fprintf(stderr, "%s start\n", __FUNCTION__);
tab4 = malloc(20 * sizeof(int));
for(i=0;i<21;i++) {
sum += tab4[i];
}
free(tab4);
fprintf(stderr, "%s end\n", __FUNCTION__);
return sum;
}
@ -187,8 +193,43 @@ int test15(void)
return strlen(p);
}
/* ok */
int test16()
{
char *demo = "This is only a test.";
char *p;
fprintf(stderr, "%s start\n", __FUNCTION__);
p = alloca(16);
strcpy(p,"12345678901234");
printf("alloca: p is %s\n", p);
/* Test alloca embedded in a larger expression */
printf("alloca: %s\n", strcpy(alloca(strlen(demo)+1),demo) );
fprintf(stderr, "%s end\n", __FUNCTION__);
}
/* error */
int test17()
{
char *demo = "This is only a test.";
char *p;
fprintf(stderr, "%s start\n", __FUNCTION__);
p = alloca(16);
strcpy(p,"12345678901234");
printf("alloca: p is %s\n", p);
/* Test alloca embedded in a larger expression */
printf("alloca: %s\n", strcpy(alloca(strlen(demo)),demo) );
fprintf(stderr, "%s end\n", __FUNCTION__);
}
int (*table_test[])(void) = {
test1,
test1,
test2,
test3,
@ -204,23 +245,33 @@ int (*table_test[])(void) = {
test13,
test14,
test15,
test16,
test17,
};
int main(int argc, char **argv)
{
int index;
int (*ftest)(void);
int index_max = sizeof(table_test)/sizeof(table_test[0]);
if (argc < 2) {
printf("usage: boundtest n\n"
"test TCC bound checking system\n"
);
printf(
"test TCC bound checking system\n"
"usage: boundtest N\n"
" 1 <= N <= %d\n", index_max);
exit(1);
}
index = 0;
if (argc >= 2)
index = atoi(argv[1]);
index = atoi(argv[1]) - 1;
if ((index < 0) || (index >= index_max)) {
printf("N is outside of the valid range (%d)\n", index);
exit(2);
}
/* well, we also use bounds on this ! */
ftest = table_test[index];
ftest();