From c0daede46df4f546639bd2d3e11dcf064d554966 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji3.141@gmail.com>
Date: Sat, 16 May 2020 09:53:58 -0400
Subject: starting over

---
 src/kernel/mem.c | 88 --------------------------------------------------------
 1 file changed, 88 deletions(-)
 delete mode 100644 src/kernel/mem.c

(limited to 'src/kernel/mem.c')

diff --git a/src/kernel/mem.c b/src/kernel/mem.c
deleted file mode 100644
index d9322a9..0000000
--- a/src/kernel/mem.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
-Copyright 2019 Benji Dial
-
-Permission to use, copy, modify, and/or distribute this
-software for any purpose with or without fee is hereby
-granted, provided that the above copyright notice and this
-permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS
-ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
-EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
-INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
-RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
-OF THIS SOFTWARE.
-*/
-
-#include "mem.h"
-
-uint32_t last_byte = 0;
-uint32_t last_mask = 0x00000001;
-
-void *allocate_block(uint32_t size, uint16_t proc_n) {
-  for (struct mmap_entry *find = mmap_start; find; find = find->after)
-    if (!find->whose) {
-      if (find->length == size) {
-        find->whose = proc_n;
-        return (void *)find->base;
-      }
-      else if (find->length > size) {
-        uint32_t byte = last_byte;
-        uint32_t mask = last_mask;
-        while (mmap_bitmap[byte] & mask) {
-          if ((byte == last_byte) && (mask == last_mask)) {
-            while (find = find->after)
-              if (find->length == size) {
-                find->whose = proc_n;
-                return (void *)find->base;
-              }
-            return (void *)0;
-          }
-          if (!(mask <<= 1)) {
-            mask = 0x00000001;
-            if (++byte == MMAP_SIZE)
-              byte = 0;
-          }
-        }
-        mmap_bitmap[last_byte = byte] |= last_mask = mask;
-        struct mmap_entry *new = mmap_bss + (byte << 5);
-        while (mask >>= 1)
-          ++new;
-        ((((new->after = find->after)->before = new)->before = find)->after = new)->base = find->base + size;
-        new->length = find->length - size;
-        find->length = size;
-        find->whose = proc_n;
-        new->whose = FREE;
-        return (void *)find->base;
-      }
-    }
-  return (void *)0;
-}
-
-void deallocate_block(void *start) {
-  struct mmap_entry *find = mmap_start;
-  while (find->base != (uint32_t)start)
-    if (find->after)
-      find = find->after;
-    else
-      return;
-  find->whose = FREE;
-  while (find->before && !find->before->whose) {
-    find->before->length += find->length;
-    if (find->before->after = find->after)
-      find->after->before = find->before;
-    unmark_entry(find);
-    find = find->before;
-  }
-  if (!find->before)
-    mmap_start = find;
-  while (find->after && !find->after->whose) {
-    find->length += find->after->length;
-    unmark_entry(find->after);
-    if (find->after = find->after->after)
-      find->after->before = find;
-  }
-}
\ No newline at end of file
-- 
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