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[query] add UC_QUERY_PAGE_SIZE uc_query helper

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Return the current page size used by the current arch.
Useful to call uc_mem_map() with memory/size aligned.

Signed-off-by: Nicolas PLANEL <nplanel@redhat.com>
This commit is contained in:
Nicolas PLANEL 2016-03-04 15:26:06 +11:00
parent 1ddebc7304
commit 1087ba9dea
3 changed files with 16 additions and 0 deletions
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1
include/unicorn/unicorn.h
View file

@ -262,6 +262,7 @@ typedef struct uc_mem_region {
typedef enum uc_query_type {
// Dynamically query current hardware mode.
UC_QUERY_MODE = 1,
UC_QUERY_PAGE_SIZE,
} uc_query_type;
/*

10
tests/unit/test_mem_map.c
View file

@ -158,6 +158,15 @@ static void test_strange_map(void **state)
uc_mem_unmap(uc, 0x0,0x1000);
}
static void test_query_page_size(void **state)
{
uc_engine *uc = *state;
size_t page_size;
uc_assert_success(uc_query(uc, UC_QUERY_PAGE_SIZE, &page_size));
assert_int_equal(4096, page_size);
}
void write(uc_engine* uc, uint64_t addr, uint64_t len){
uint8_t* buff = alloca(len);
memset(buff,0,len);
@ -220,6 +229,7 @@ int main(void) {
test(test_unmap_double_map),
test(test_overlap_unmap_double_map),
test(test_strange_map),
test(test_query_page_size),
};
#undef test
return cmocka_run_group_tests(tests, NULL, NULL);

5
uc.c
View file

@ -1094,6 +1094,11 @@ uint32_t uc_mem_regions(uc_engine *uc, uc_mem_region **regions, uint32_t *count)
UNICORN_EXPORT
uc_err uc_query(uc_engine *uc, uc_query_type type, size_t *result)
{
if (type == UC_QUERY_PAGE_SIZE) {
*result = uc->target_page_size;
return UC_ERR_OK;
}
switch(uc->arch) {
case UC_ARCH_ARM:
return uc->query(uc, type, result);