diff options
Diffstat (limited to 'src/kernel/lib/memory.c')
-rw-r--r-- | src/kernel/lib/memory.c | 66 |
1 files changed, 34 insertions, 32 deletions
diff --git a/src/kernel/lib/memory.c b/src/kernel/lib/memory.c index eb7f610..f9e0054 100644 --- a/src/kernel/lib/memory.c +++ b/src/kernel/lib/memory.c @@ -3,65 +3,67 @@ void *memcpy(void *dest, const void *src, size_t count) { - const char *sp = (const char *) src; - char *dp = (char *) dest; - for (; count != 0; count--) *dp++ = *sp++; - return dest; + const char *sp = (const char *)src; + char *dp = (char *)dest; + for (; count != 0; count--) + *dp++ = *sp++; + return dest; } void *memset(void *dest, char val, size_t count) { - char *temp = (char *) dest; - for (; count != 0; count--) *temp++ = val; - return dest; + char *temp = (char *)dest; + for (; count != 0; count--) + *temp++ = val; + return dest; } int memcmp(const void *a_ptr, const void *b_ptr, size_t size) { - const unsigned char *a = (const unsigned char *) a_ptr; - const unsigned char *b = (const unsigned char *) b_ptr; - for (size_t i = 0; i < size; i++) { - if (a[i] < b[i]) - return -1; - else if (b[i] < a[i]) - return 1; - } - return 0; + const unsigned char *a = (const unsigned char *)a_ptr; + const unsigned char *b = (const unsigned char *)b_ptr; + for (size_t i = 0; i < size; i++) { + if (a[i] < b[i]) + return -1; + else if (b[i] < a[i]) + return 1; + } + return 0; } uint32_t total_memory; struct memory_entry { - uint64_t base; - uint64_t length; - uint32_t type; + uint64_t base; + uint64_t length; + uint32_t type; } __attribute__((packed)); struct memory_entry *memory_get_entries() { - return (struct memory_entry *) 0xA000; + return (struct memory_entry *)0xA000; } void memory_init() { - uint64_t max_base = 0; - uint64_t max_length = 0; - for (struct memory_entry *i = memory_get_entries(); i->type; i++) { - if (i->type == 1 && i->base > max_base) { - max_base = i->base; - max_length = i->length; - } - } - total_memory = (uint32_t) (max_base + max_length); - total_memory /= 1024; + uint64_t max_base = 0; + uint64_t max_length = 0; + for (struct memory_entry *i = memory_get_entries(); i->type; i++) { + if (i->type == 1 && i->base > max_base) { + max_base = i->base; + max_length = i->length; + } + } + total_memory = (uint32_t)(max_base + max_length); + total_memory /= 1024; } uint32_t memory_get_free() { - return total_memory; // - paging_get_used_pages() * 4; + return total_memory; // - paging_get_used_pages() * 4; } uint32_t memory_get_all() { - return total_memory; + return total_memory; }
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