int main()
{
unsigned int currentGS = TLS_GET_GS_REG();
unsigned int currentFS = TLS_GET_FS_REG();
if ((currentGS == 0) || ((currentGS & 0x4) == 0x4))
{
unsigned int ldtEntry = currentGS >> 3;
unsigned int ldtNextEntry = ldtEntry+1;
UserDesc tableEntry;
memset(&tableEntry, 0, sizeof(UserDesc));
tableEntry.entry_number = ldtNextEntry;
tableEntry.base_addr = reinterpret_cast<unsigned int>(new unsigned int(0xabcd));
tableEntry.limit = 0x4000;
int res = syscall(SYS_modify_ldt, LDT_SET, &tableEntry, sizeof(UserDesc));
if (res < 0)
{
printf("LDT_SET for entry %d failed, code %d, %s\n", ldtNextEntry, errno, strerror(errno) );
return 0;
}
unsigned int newSegVal = (ldtNextEntry << 3) + 7;
unsigned int GSRes = 0x1;
unsigned int FSRes = 0x2;
FarPointer farPtrGS(GSRes, newSegVal);
FarPointer farPtrFS(FSRes, newSegVal);
if ((SetGs(&farPtrGS) != GSRes) || (SetFs(&farPtrFS) != FSRes))
{
TLS_SET_GS_REG(currentGS);
TLS_SET_FS_REG(currentFS);
printf("LFS or LGS failed\n");
return 0;
}
if ((TLS_GET_GS_REG() != newSegVal) || (TLS_GET_FS_REG() != newSegVal))
{
TLS_SET_GS_REG(currentGS);
TLS_SET_FS_REG(currentFS);
printf("GS or FS wrong value\n");
return 0;
}
if ((GetGsBase() != 0xabcd) || (GetFsBase() != 0xabcd))
{
TLS_SET_GS_REG(currentGS);
TLS_SET_FS_REG(currentFS);
printf("GS or FS wrong base address\n");
return 0;
}
TLS_SET_GS_REG(currentGS);
TLS_SET_FS_REG(currentFS);
printf("LFS and LGS passed successfully\n");
printf("Base address of GS and FS was synchronuized successfully;\n");
}
int main (int argc, char *argv[])
{
int rc;
UserDesc tr;
int res;
tr.entry_number = GdtFirstEntry();
res = syscall(SYS_get_thread_area, &tr);
if (res != 0)
{
printf("SYS_get_thread_area failed with error: %s\n", strerror(errno));
return 0;
}
tr.entry_number = (unsigned)-1;
tr.base_addr = (unsigned int)new UserInfo();
((UserInfo*)(tr.base_addr))->d1 = value1;
((UserInfo*)(tr.base_addr))->d2 = value2;
res = syscall(SYS_set_thread_area, &tr);
if (res != 0)
{
printf("SYS_set_thread_area failed with error: %s\n", strerror(errno));
return 0;
}
TLS_SET_FS_REG((tr.entry_number << 3) + 3);
if ((GetVal(0) == value1) && (GetVal(4) == value2))
{
printf("TEST PASSED\n");
}
else
{
printf("TEST FAILED\n");
}
return 0;
}
int main (int argc, char *argv[])
{
int rc;
int i;
UserDesc tr;
UserDesc set_tr;
int syscall_res;
tr.entry_number = 6;
syscall_res = syscall(SYS_get_thread_area, &tr);
if (syscall_res != 0)
{
printf("SYS_get_thread_area failed with error: %s\n", strerror(errno));
return 0;
}
tr.entry_number = (unsigned)-1;
tr.base_addr = (unsigned int)new UserInfo();
((UserInfo*)(tr.base_addr))->d1 = value1;
((UserInfo*)(tr.base_addr))->d2 = value2;
syscall_res = syscall(SYS_set_thread_area, &tr);
if (syscall_res != 0)
{
printf("SYS_set_thread_area failed with error: %s\n", strerror(errno));
return 0;
}
TLS_SET_FS_REG((tr.entry_number << 3) + 3);
/* ======== MovsTest =========== */
unsigned int mem = 0;
unsigned int res = MovsTest(offsetof(UserInfo, d2), &mem);
if (res != value2)
printf("The \"movs\" test FAILED\n");
else
printf("The \"movs\" test PASSED successfully\n");
/* ======== MaskMovqTest =========== */
MaskMovqTest(4, 0x9966);
if (((UserInfo*)(tr.base_addr))->d2 != 0x9966)
printf("The \"maskmovq\" test FAILED\n");
else
printf("The \"maskmovq\" test PASSED successfully\n");
/* ======== PushPopTest =========== */
if (PushPopTest(0, 0x7788) != 0x7788)
{
printf("The \"PushPopTest\" test FAILED\n");
}
else
{
printf("The \"PushPopTest\" test PASSED successfully\n");
}
/* ======== CallTest =========== */
((UserInfo*)(tr.base_addr))->d1 = (unsigned int)CallTestCallback;
CallTest(0);
return 0;
}
