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// Copyright 2017 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
#if GOOS_linux && (GOARCH_amd64 | GOARCH_ppc64 | GOARCH_ppc64le)
#include "test_linux.h"
#endif
static int test_copyin()
{
static uint16 buf[3];
STORE_BY_BITMASK(uint16, htole16, &buf[1], 0x1234, 0, 16);
unsigned char x[sizeof(buf)];
memcpy(x, buf, sizeof(x));
if (x[0] != 0 || x[1] != 0 ||
x[2] != 0x34 || x[3] != 0x12 ||
x[4] != 0 || x[5] != 0) {
printf("bad result of STORE_BY_BITMASK(le16, 0x1234, 0, 16): %x %x %x %x %x %x\n",
x[0], x[1], x[2], x[3], x[4], x[5]);
return 1;
}
STORE_BY_BITMASK(uint16, htole16, &buf[1], 0x555a, 5, 4);
memcpy(x, buf, sizeof(x));
if (x[0] != 0 || x[1] != 0 ||
x[2] != 0x54 || x[3] != 0x13 ||
x[4] != 0 || x[5] != 0) {
printf("bad result of STORE_BY_BITMASK(le16, 0x555a, 5, 4): %x %x %x %x %x %x\n",
x[0], x[1], x[2], x[3], x[4], x[5]);
return 1;
}
STORE_BY_BITMASK(uint16, htobe16, &buf[1], 0x4567, 13, 3);
memcpy(x, buf, sizeof(x));
if (x[0] != 0 || x[1] != 0 ||
x[2] != 0xf4 || x[3] != 0x13 ||
x[4] != 0 || x[5] != 0) {
printf("bad result of STORE_BY_BITMASK(be16, 0x4567, 13, 3): %x %x %x %x %x %x\n",
x[0], x[1], x[2], x[3], x[4], x[5]);
return 1;
}
return 0;
}
static int test_csum_inet()
{
struct csum_inet_test {
const char* data;
size_t length;
uint16 csum;
};
struct csum_inet_test tests[] = {
{// 0
"",
0,
le16toh(0xffff)},
{
// 1
"\x00",
1,
le16toh(0xffff),
},
{
// 2
"\x00\x00",
2,
le16toh(0xffff),
},
{
// 3
"\x00\x00\xff\xff",
4,
le16toh(0x0000),
},
{
// 4
"\xfc",
1,
le16toh(0xff03),
},
{
// 5
"\xfc\x12",
2,
le16toh(0xed03),
},
{
// 6
"\xfc\x12\x3e",
3,
le16toh(0xecc5),
},
{
// 7
"\xfc\x12\x3e\x00\xc5\xec",
6,
le16toh(0x0000),
},
{
// 8
"\x42\x00\x00\x43\x44\x00\x00\x00\x45\x00\x00\x00\xba\xaa\xbb\xcc\xdd",
17,
le16toh(0x43e1),
},
{
// 9
"\x42\x00\x00\x43\x44\x00\x00\x00\x45\x00\x00\x00\xba\xaa\xbb\xcc\xdd\x00",
18,
le16toh(0x43e1),
},
{
// 10
"\x00\x00\x42\x00\x00\x43\x44\x00\x00\x00\x45\x00\x00\x00\xba\xaa\xbb\xcc\xdd",
19,
le16toh(0x43e1),
},
{
// 11
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\xab\xcd",
15,
le16toh(0x5032),
},
{
// 12
"\x00\x00\x12\x34\x56\x78",
6,
le16toh(0x5397),
},
{
// 13
"\x00\x00\x12\x34\x00\x00\x56\x78\x00\x06\x00\x04\xab\xcd",
14,
le16toh(0x7beb),
},
{
// 14
"\x00\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa\xbb\xcc\xdd\xee\xff\xff\xee\xdd\xcc\xbb\xaa\x99\x88\x77\x66\x55\x44\x33\x22\x11\x00\x00\x00\x00\x04\x00\x00\x00\x06\x00\x00\xab\xcd",
44,
le16toh(0x2854),
},
{
// 15
"\x00\x00\x12\x34\x00\x00\x56\x78\x00\x11\x00\x04\xab\xcd",
14,
le16toh(0x70eb),
},
{
// 16
"\x00\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa\xbb\xcc\xdd\xee\xff\xff\xee\xdd\xcc\xbb\xaa\x99\x88\x77\x66\x55\x44\x33\x22\x11\x00\x00\x00\x00\x04\x00\x00\x00\x11\x00\x00\xab\xcd",
44,
le16toh(0x1d54),
},
{
// 17
"\x00\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa\xbb\xcc\xdd\xee\xff\xff\xee\xdd\xcc\xbb\xaa\x99\x88\x77\x66\x55\x44\x33\x22\x11\x00\x00\x00\x00\x04\x00\x00\x00\x3a\x00\x00\xab\xcd",
44,
le16toh(0xf453),
}};
for (unsigned i = 0; i < ARRAY_SIZE(tests); i++) {
struct csum_inet csum;
csum_inet_init(&csum);
csum_inet_update(&csum, (const uint8*)tests[i].data, tests[i].length);
if (csum_inet_digest(&csum) != tests[i].csum) {
fprintf(stderr, "bad checksum in test #%u, want: %hx, got: %hx\n", i, tests[i].csum, csum_inet_digest(&csum));
return 1;
}
}
return 0;
}
static int rand_int_range(int start, int end)
{
return rand() % (end + 1 - start) + start;
}
static int test_csum_inet_acc()
{
uint8 buffer[128];
for (int test = 0; test < 256; test++) {
int size = rand_int_range(1, 128);
int step = rand_int_range(1, 8) * 2;
for (int i = 0; i < size; i++)
buffer[i] = rand_int_range(0, 255);
struct csum_inet csum_acc;
csum_inet_init(&csum_acc);
for (int i = 0; i < size / step; i++)
csum_inet_update(&csum_acc, &buffer[i * step], step);
if (size % step != 0)
csum_inet_update(&csum_acc, &buffer[size - size % step], size % step);
struct csum_inet csum;
csum_inet_init(&csum);
csum_inet_update(&csum, &buffer[0], size);
if (csum_inet_digest(&csum_acc) != csum_inet_digest(&csum))
return 1;
}
return 0;
}
static int test_coverage_filter()
{
struct tmp_cov_filter_t {
uint64 pcstart;
uint64 pcsize;
uint8 bitmap[((0x1000 >> 4) + 7) / 8];
};
static struct tmp_cov_filter_t tmp_cov_filter;
tmp_cov_filter.pcstart = 0xffffffff81000000;
tmp_cov_filter.pcsize = 0x1000;
cov_filter = (cov_filter_t*)&tmp_cov_filter;
flag_coverage_filter = true;
uint64 enable_pc = 0xffffffff81000765;
uint64 disable_pc = 0xffffffff81000627;
uint64 out_pc = 0xffffffff82000000;
uint32 idx = ((enable_pc - cov_filter->pcstart) >> 4) / 8;
uint32 shift = ((enable_pc - cov_filter->pcstart) >> 4) % 8;
cov_filter->bitmap[idx] |= (1 << shift);
if (!coverage_filter(enable_pc))
return 1;
if (coverage_filter(disable_pc))
return 1;
if (coverage_filter(out_pc))
return 1;
cov_filter = NULL;
flag_coverage_filter = false;
return 0;
}
static struct {
const char* name;
int (*f)();
} tests[] = {
{"test_copyin", test_copyin},
{"test_csum_inet", test_csum_inet},
{"test_csum_inet_acc", test_csum_inet_acc},
#if GOOS_linux && (GOARCH_amd64 || GOARCH_ppc64 || GOARCH_ppc64le)
{"test_kvm", test_kvm},
#endif
{"test_coverage_filter", test_coverage_filter},
};
static int run_tests(const char* test)
{
int ret = 0;
for (size_t i = 0; i < ARRAY_SIZE(tests); i++) {
const char* name = tests[i].name;
if (test && strcmp(test, name))
continue;
printf("=== RUN %s\n", name);
int res = tests[i].f();
ret |= res > 0;
const char* strres = res < 0 ? "SKIP" : (res > 0 ? "FAIL" : "OK");
printf("--- %-4s %s\n", strres, name);
}
return ret;
}
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