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-rw-r--r--src/mmap.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/src/mmap.c b/src/mmap.c
deleted file mode 100644
index e5d4be6..0000000
--- a/src/mmap.c
+++ /dev/null
@@ -1,51 +0,0 @@
-#include "mmap.h"
-#include <multiboot2.h>
-
-#ifdef DEBUG
-#include <stdio.h>
-#endif
-
-__attribute__((section(".multiboot.text"))) unsigned
-multiboot2_mmap(const struct multiboot_mmap_entry entries[], unsigned entry_count, unsigned bitmap[1024 * 32])
-{
- unsigned i, l;
- multiboot_uint64_t avail_frames = 0;
- multiboot_uint64_t n_frames;
- multiboot_uint64_t table_idx;
-
- /* clear out the bitmap */
- for (i = 0; i < 1024 * 32; ++i) bitmap[i] = 0;
-
- /* loop through all the mmap_entry structures where type is MULTIBOOT_MEMORY_AVAILABLE */
- for (i = 0; i < entry_count; ++i) {
- if (entries[i].type != MULTIBOOT_MEMORY_AVAILABLE) continue;
-
- /* number of frames in this entry */
- n_frames = entries[i].len / 4096;
- avail_frames += n_frames;
-
-#ifdef DEBUG
- printf("mmap_entry: 0x%16llx\tlen=%12llu\t%d frames (%d blocks + %d)\n", entries[i].addr, entries[i].len, n_frames,
- n_frames / 32, n_frames % 32);
-#endif
-
- /* the bitmap is an array of blocks, each holding 32 (2^5) values */
- table_idx = (entries[i].addr >> 17); /* get the upper 15 bits */
-
- while (n_frames != 0) {
- if (n_frames >= 32) {
- bitmap[table_idx] = 0xffffffff;
- table_idx++;
- n_frames -= 32;
- }
- else {
- unsigned block = bitmap[table_idx];
- for (l = 0; l < n_frames; ++l) block |= (1 << l);
- bitmap[table_idx] = block;
- n_frames = 0;
- }
- }
- }
-
- return avail_frames;
-}