kern: vm: Add TLSF port

Signed-off-by: Ian Moffett <ian@osmora.org>

4 files changed, 172 insertions, 0 deletions

diff --git a/sys/inc/lib/assert.h b/sys/inc/lib/assert.h
new file mode 100644
index 0000000..252ea2a
--- /dev/null
+++ b/sys/inc/lib/assert.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LIB_ASSERT_H_
+#define _LIB_ASSERT_H_
+
+#include <kern/panic.h>
+#include <sys/types.h>
+
+#define __assert(condition)                                         \
+    if ((uintptr_t)(condition) == 0) {                              \
+        panic("assert \"%s\" failed (%s() at %s:%d)\n", #condition, \
+              __func__, __FILE__, __LINE__);                        \
+    }
+
+#endif  /* !_LIB_ASSERT_H_ */
diff --git a/sys/inc/sys/limits.h b/sys/inc/sys/limits.h
new file mode 100644
index 0000000..fba3cbf
--- /dev/null
+++ b/sys/inc/sys/limits.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SYS_LIMITS_H_
+#define _SYS_LIMITS_H_ 1
+
+#define PATH_MAX 1024
+#define NAME_MAX 256
+#define SSIZE_MAX 32767
+#define ARG_MAX 4096
+#define CHAR_BIT 8
+
+#endif  /* !_SYS_LIMITS_H_ */
diff --git a/sys/inc/sys/types.h b/sys/inc/sys/types.h
index a02bb29..9de5618 100644
--- a/sys/inc/sys/types.h
+++ b/sys/inc/sys/types.h
@@ -51,6 +51,7 @@ typedef uint64_t    size_t;
 typedef int64_t     ssize_t;
 typedef size_t      off_t;
 typedef size_t      uintptr_t;
+typedef ssize_t     ptrdiff_t;
 
 /* ID types */
 typedef int32_t     id_t;
diff --git a/sys/inc/vm/tlsf.h b/sys/inc/vm/tlsf.h
new file mode 100644
index 0000000..5405927
--- /dev/null
+++ b/sys/inc/vm/tlsf.h
@@ -0,0 +1,90 @@
+#ifndef INCLUDED_tlsf

+#define INCLUDED_tlsf

+

+/*

+** Two Level Segregated Fit memory allocator, version 3.1.

+** Written by Matthew Conte

+**	http://tlsf.baisoku.org

+**

+** Based on the original documentation by Miguel Masmano:

+**	http://www.gii.upv.es/tlsf/main/docs

+**

+** This implementation was written to the specification

+** of the document, therefore no GPL restrictions apply.

+** 

+** Copyright (c) 2006-2016, Matthew Conte

+** All rights reserved.

+** 

+** Redistribution and use in source and binary forms, with or without

+** modification, are permitted provided that the following conditions are met:

+**     * Redistributions of source code must retain the above copyright

+**       notice, this list of conditions and the following disclaimer.

+**     * Redistributions in binary form must reproduce the above copyright

+**       notice, this list of conditions and the following disclaimer in the

+**       documentation and/or other materials provided with the distribution.

+**     * Neither the name of the copyright holder nor the

+**       names of its contributors may be used to endorse or promote products

+**       derived from this software without specific prior written permission.

+** 

+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND

+** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

+** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

+** DISCLAIMED. IN NO EVENT SHALL MATTHEW CONTE BE LIABLE FOR ANY

+** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

+** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

+** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

+** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

+** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+*/

+

+#include <sys/types.h>

+

+#if defined(__cplusplus)

+extern "C" {

+#endif

+

+/* tlsf_t: a TLSF structure. Can contain 1 to N pools. */

+/* pool_t: a block of memory that TLSF can manage. */

+typedef void* tlsf_t;

+typedef void* pool_t;

+

+/* Create/destroy a memory pool. */

+tlsf_t tlsf_create(void* mem);

+tlsf_t tlsf_create_with_pool(void* mem, size_t bytes);

+void tlsf_destroy(tlsf_t tlsf);

+pool_t tlsf_get_pool(tlsf_t tlsf);

+

+/* Add/remove memory pools. */

+pool_t tlsf_add_pool(tlsf_t tlsf, void* mem, size_t bytes);

+void tlsf_remove_pool(tlsf_t tlsf, pool_t pool);

+

+/* malloc/memalign/realloc/free replacements. */

+void* tlsf_malloc(tlsf_t tlsf, size_t bytes);

+void* tlsf_memalign(tlsf_t tlsf, size_t align, size_t bytes);

+void* tlsf_realloc(tlsf_t tlsf, void* ptr, size_t size);

+void tlsf_free(tlsf_t tlsf, void* ptr);

+

+/* Returns internal block size, not original request size */

+size_t tlsf_block_size(void* ptr);

+

+/* Overheads/limits of internal structures. */

+size_t tlsf_size(void);

+size_t tlsf_align_size(void);

+size_t tlsf_block_size_min(void);

+size_t tlsf_block_size_max(void);

+size_t tlsf_pool_overhead(void);

+size_t tlsf_alloc_overhead(void);

+

+/* Debugging. */

+typedef void (*tlsf_walker)(void* ptr, size_t size, int used, void* user);

+void tlsf_walk_pool(pool_t pool, tlsf_walker walker, void* user);

+/* Returns nonzero if any internal consistency check fails. */

+int tlsf_check(tlsf_t tlsf);

+int tlsf_check_pool(pool_t pool);

+

+#if defined(__cplusplus)

+};

+#endif

+

+#endif