Move dlmalloc outside of kernel tree

kernel/dlmalloc/dlmalloc_port.inc

@@ -0,0 +1,72 @@
+// Config
+
+#include <stddef.h>
+#include "hal/hal.h"
+#include "spinlock/spinlock.h"
+#include "kprintf.h"
+#include "bitmap/bitmap.h"
+#include "util/util.h"
+#include "pmm/pmm.h"
+#include "malloc.h"
+#include "bootinfo/bootinfo.h"
+
+#define USE_DL_PREFIX 1
+#define LACKS_SYS_TYPES_H 1
+#define NO_MALLOC_STATS 1
+#define LACKS_ERRNO_H 1
+#define LACKS_TIME_H 1
+#define LACKS_STDLIB_H 1
+#define LACKS_SYS_MMAN_H 1
+#define LACKS_FCNTL_H 1
+#define LACKS_UNISTD_H 1
+#define LACKS_SYS_PARAM_H 1
+#define LACKS_STRINGS_H 1
+#define LACKS_SCHED_H 1
+#define HAVE_MMAP 0
+#define ABORT \
+  do { \
+    ERR("dlmalloc", "Aborting..."); \
+    hal_hang(); \
+  } while(0)
+#define MALLOC_FAILURE_ACTION
+#define HAVE_MORECORE 1
+#define USE_LOCKS 2
+#define malloc_getpagesize 0x1000
+#define EINVAL 0xdeadbeef
+#define ENOMEM 0xb16b00b5
+
+#define MLOCK_T SpinLock
+
+int ACQUIRE_LOCK(SpinLock *sl) {
+  spinlock_acquire(sl);
+  return 0;
+}
+
+int RELEASE_LOCK(SpinLock *sl) {
+  spinlock_release(sl);
+  return 0;
+}
+
+int INITIAL_LOCK(SpinLock *sl) {
+  spinlock_release(sl);
+  return 0;
+}
+    
+static MLOCK_T malloc_global_mutex = { 0 };
+
+void *_last = 0;
+
+void *sbrk(long inc) {
+  if (inc < 0) {
+    return 0;
+  }
+  if (!inc) {
+    return _last;
+  }
+
+  uint64_t blocks = _DIV_ROUNDUP(inc, BITMAP_BLOCK_SIZE);
+  uint8_t *virt = VIRT(pmm_alloc(blocks));
+  hal_memset(virt, 0, blocks * BITMAP_BLOCK_SIZE);
+  _last = (void *)(virt + inc);
+  return virt;
+}

kernel/dlmalloc/malloc.c

@@ -0,0 +1 @@
+../../dlmalloc/malloc.c

kernel/dlmalloc/malloc.h

@@ -1,13 +0,0 @@
-#ifndef MALLOC_MALLOC_H_
-#define MALLOC_MALLOC_H_
-
-#include <stddef.h>
-
-void *dlmalloc(size_t);
-void dlfree(void *);
-void *dlcalloc(size_t, size_t);
-void *dlrealloc(void *, size_t);
-void *dlrealloc_in_place(void *, size_t);
-void dlmalloc_check(void);
-
-#endif // MALLOC_MALLOC_H_

kernel/dlmalloc/malloc.h

@@ -0,0 +1 @@
+../../dlmalloc/malloc.h