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fix: find_next_block

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starnakin 2024-10-15 01:10:37 +02:00
parent 5fc90ea240
commit 886f912f36
1 changed files with 10 additions and 11 deletions
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21
src/memory/page.c
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@ -6,23 +6,22 @@
#include "memory.h" #include "memory.h"
#include "utils.h" #include "utils.h"
#define PT_SIZE 1024 #define PT_SIZE 0x300
#define MAX_TLB_ENTRIES 32 #define MAX_TLB_ENTRIES 32
extern uint32_t page_table_entries[PT_SIZE] __attribute__((aligned(4096))); extern uint32_t page_table_entries[PT_SIZE] __attribute__((aligned(4096)));
static int16_t find_next_block(size_t nb_pages) static int16_t find_next_block(size_t nb_pages)
{ {
for (size_t i = 0; i < PT_SIZE; i++) { for (uint16_t i = 0; i < PT_SIZE; i++) {
if (page_table_entries[i] >> 12 == i) { uint16_t j;
size_t j = i + 1; for (j = 0;
for (; j - i < nb_pages && j < PT_SIZE; j++) page_table_entries[i + j] >> 12 == i + j && j < nb_pages;
if (page_table_entries[j] >> 12 != j) j++)
break; ;
if (j - i == nb_pages) if (j == nb_pages)
return i; return i;
i = j - 1; i += j;
}
} }
return -1; return -1;
} }