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added testcase for the values read from high addresses

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coco 2015-12-10 16:07:01 +01:00
parent e4fe6b58b4
commit 14e75252a5
1 changed files with 27 additions and 0 deletions
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27
tests/unit/test_mem_high.c
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@ -85,11 +85,38 @@ static void test_high_address_reads(void **state)
} }
} }
//if a read is performed from a big address whith a non-zero last digit, 0 will be read
static void test_high_address_read_values(void **state)
{
uc_engine *uc = *state;
uint64_t addr = 0x0010000000000001;
//addr = 0x000ffffffffffff8; // uncomment to fix wrong behaviour
//addr = 90000000; // uncomment to fix wrong behaviour
//
uint8_t content[] = {0x42,0x42,0x42,0x42, 0x42,0x42,0x42,0x42};
uc_assert_success(uc_mem_map(uc, addr-(addr%4096), 4096*2, UC_PROT_ALL));
uc_assert_success(uc_mem_write(uc, addr, content, 8));
uc_assert_success(uc_reg_write(uc, UC_X86_REG_RAX, &addr));
const uint64_t base_addr = 0x40000;
uint8_t code[] = {0x48,0x8b,0x00,0x90,0x90,0x90,0x90}; // mov rax, [rax], nops
uc_assert_success(uc_mem_map(uc, base_addr, 4096, UC_PROT_ALL));
uc_assert_success(uc_mem_write(uc, base_addr, code, 7));
uc_assert_success(uc_emu_start(uc, base_addr, base_addr + 3, 0, 0));
uint64_t rax = 0;
uc_assert_success(uc_reg_read(uc, UC_X86_REG_RAX, &rax));
if(rax != 0x4242424242424242) {
fail_msg("wrong memory read from code %lx", rax);
}
}
int main(void) { int main(void) {
#define test(x) cmocka_unit_test_setup_teardown(x, setup, teardown) #define test(x) cmocka_unit_test_setup_teardown(x, setup, teardown)
const struct CMUnitTest tests[] = { const struct CMUnitTest tests[] = {
test(test_last_page_map), test(test_last_page_map),
test(test_high_address_reads), test(test_high_address_reads),
test(test_high_address_read_values),
test(test_nullptr_deref_wrong_perms), test(test_nullptr_deref_wrong_perms),
}; };
#undef test #undef test