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// IBM_PROLOG_BEGIN_TAG
// This is an automatically generated prolog.
//
// $Source: src/usr/testcore/kernel/vmmpagetest.H $
//
// IBM CONFIDENTIAL
//
// COPYRIGHT International Business Machines Corp. 2011
//
// p1
//
// Object Code Only (OCO) source materials
// Licensed Internal Code Source Materials
// IBM HostBoot Licensed Internal Code
//
// The source code for this program is not published or other-
// wise divested of its trade secrets, irrespective of what has
// been deposited with the U.S. Copyright Office.
//
// Origin: 30
//
// IBM_PROLOG_END
#ifndef __VMMPAGETEST_H
#define __VMMPAGETEST_H
/**
* @file vmmpagetest.H
*
* @brief Test cases for handling pages within virtual memory
*/
#include <cxxtest/TestSuite.H>
#include <arch/ppc.H>
#include <sys/time.h>
#include <sys/task.h>
#include <sys/mm.h>
#include <usr/vmmconst.h>
class vmmpagetest: public CxxTest::TestSuite
{
public:
static volatile int rc;
//Testing page removal variables
static msg_q_t iv_mq;
static uint64_t iv_va;
static uint64_t iv_size;
void testPageSetup()
{
uint64_t initPerm = (uint64_t)(READ_ONLY);
rc = mm_alloc_block(iv_mq,reinterpret_cast<void*>(iv_va),iv_size);
if (rc != 0)
{
TS_FAIL("Unable to allocate block.\n");
}
rc = mm_set_permission(reinterpret_cast<void*>(iv_va),iv_size,
initPerm);
if (rc != 0)
{
TS_FAIL("Failed to set block permissions to READ_ONLY.\n");
}
task_create(testDaemon, NULL);
}
void testReadPageRelease()
{
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+2*PAGESIZE),0,
WRITABLE);
//Dependent on block being initialized to READ_ONLY
(*(volatile uint64_t *)(iv_va+2*PAGESIZE)) = 0x11111111; sync();
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+2*PAGESIZE),0,
READ_ONLY);
rc = mm_remove_pages(RELEASE,
reinterpret_cast<void*>(iv_va),iv_size);
if (rc != 0)
{
TS_FAIL("Failed to release read pages\n");
}
}
void testWriteTrackPageFlush()
{
rc = mm_set_permission(reinterpret_cast<void*>(iv_va),3*PAGESIZE,WRITABLE|WRITE_TRACKED);
if (rc != 0)
{
TS_FAIL(
"Failed to set WRITE_TRACKED permissions on first page.\n");
}
(*(volatile uint64_t *)iv_va) = 0x12345678; sync();
(*(volatile uint64_t *)(iv_va+PAGESIZE)) = 0x87654321; sync();
(*(volatile uint64_t *)(iv_va+2*PAGESIZE)) = 0x22222222; sync();
uint64_t updPerm = (uint64_t)(READ_ONLY);
rc = mm_set_permission(reinterpret_cast<void*>((iv_va+2*PAGESIZE)),0,
updPerm);
if (rc != 0)
{
TS_FAIL(
"Failed to set WRITE_TRACKED permissions on second page.\n");
}
rc = mm_remove_pages(FLUSH,
reinterpret_cast<void*>(iv_va),iv_size);
if (rc != 0)
{
TS_FAIL("Failed to flush write tracked pages\n");
}
}
void testWriteTrackPageRelease()
{
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+2*PAGESIZE),0 ,WRITABLE);
if (rc != 0)
{
TS_FAIL(
"Failed to set WRITE_TRACKED permissions on first page.\n");
}
(*(volatile uint64_t *)(iv_va+2*PAGESIZE)) = 0x33333333; sync();
(*(volatile uint64_t *)iv_va) = 0x12121212; sync();
uint64_t updPerm = (uint64_t)(READ_ONLY);
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+2*PAGESIZE),0,updPerm);
if (rc != 0)
{
TS_FAIL(
"Failed to set WRITE_TRACKED permissions on first page.\n");
}
rc = mm_remove_pages(RELEASE,
reinterpret_cast<void*>(iv_va),iv_size);
if (rc != 0)
{
TS_FAIL("Failed to release write track pages\n");
}
}
void testSetPerm()
{
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+4*PAGESIZE), 3*PAGESIZE, READ_ONLY);
if (rc != 0)
{
TS_FAIL(" 1 Failed to Update permissions.\n");
}
// try to write to a read_only page
int status;
printk("\nTest case1: Expect to see uncaught exception! ");
tid_t child = task_create(writeAddrWithNoPerm, NULL);
if ((child != task_wait_tid(child, &status, NULL)) ||
(status != TASK_STATUS_CRASHED))
{
TS_FAIL("ERROR! Write to READ_ONLY address not caught.");
}
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+4*PAGESIZE), 3*PAGESIZE, EXECUTABLE);
if (rc != 0)
{
TS_FAIL("2 Failed to Update permissions.\n");
}
// try to write to an executable page
printk("\nTest case2: Expect to see uncaught exception! ");
child = task_create(writeAddrWithNoPerm2, NULL);
if ((child != task_wait_tid(child, &status, NULL)) ||
(status != TASK_STATUS_CRASHED))
{
TS_FAIL("ERROR! Write to EXECUTABLE address not caught.");
}
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+4*PAGESIZE), 3*PAGESIZE, NO_ACCESS);
if (rc != 0)
{
TS_FAIL("3 Failed to Update permissions.\n");
}
// try to write to a no access page
printk("\nTest case3: Expect to see uncaught exception! ");
child = task_create(writeAddrWithNoPerm, NULL);
if ((child != task_wait_tid(child, &status, NULL)) ||
(status != TASK_STATUS_CRASHED))
{
TS_FAIL("ERROR! write to a NO_ACCESS addr not caught.\n");
}
// test that you cannot set WRITABLE and EXECUTABLE permissions
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+4*PAGESIZE), 3*PAGESIZE, WRITABLE|EXECUTABLE);
if (rc == 0)
{
printk("Error .. invalid combination that did not get detected\n");
TS_FAIL(" ERROR..Failed to detect a bad parm condition.\n");
}
rc = mm_set_permission(reinterpret_cast<void*>(iv_va+4*PAGESIZE), 3*PAGESIZE, WRITABLE);
if (rc != 0)
{
TS_FAIL(" 4 Failed to detect a bad parm condition.\n");
}
(*(volatile uint64_t *)(iv_va+4*PAGESIZE)) = 0x34343434;
printkd("\n%lx\n", (*(volatile uint64_t *)(iv_va+4*PAGESIZE)));
//printkd(" Successfully read from a WRITABLE page\n");
}
private:
static void testDaemon(void* unused)
{
msg_t* message = NULL;
uint64_t ea = 0;
while (1)
{
message = msg_wait(iv_mq);
if (message)
{
ea = message->data[0];
printkd("Effective Addr: 0x%lX, %s\n",ea,
message->type==MSG_MM_RP_READ?"READ":"WRITE");
message->data[1] = 0;
rc = msg_respond(iv_mq, message);
}
}
}
static void writeAddrWithNoPerm(void* unused)
{
(*(volatile uint64_t *)(iv_va+4*PAGESIZE)) = 0x11111111; sync();
task_end();
}
static void writeAddrWithNoPerm2(void* unused)
{
(*(volatile uint64_t *)(iv_va+4*PAGESIZE+2*PAGESIZE)) = 0x22222222; sync();
task_end();
}
};
volatile int vmmpagetest::rc = 0;
msg_q_t vmmpagetest::iv_mq = msg_q_create();
uint64_t vmmpagetest::iv_va = VMM_VADDR_RMVPAGE_TEST;
uint64_t vmmpagetest::iv_size = VMM_SIZE_RMVPAGE_TEST;
#endif
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