First commit, Vystem v0.1

shelter/lib/include/memory/pba.h

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: MPL-2.0
+#ifndef SH_LIB_PBA_H
+#define SH_LIB_PBA_H
+#include "std/type.h"
+#include "std/status.h"
+#include "memory/page.h"
+#include "memory/pez/pez.h"
+// Page block allocator
+typedef struct {
+  sh_page_VIRTUAL_ADDRESS start_va;
+  sh_uint64 total_pages;
+  sh_uint64 block_pages;
+  sh_uint64 block_count;
+  sh_uint64 max_blocks;
+} sh_pba_PAGE_BLOCK_ALLOCATOR;
+// Initialize a page block allocator
+SH_STATUS sh_pba_init(sh_pba_PAGE_BLOCK_ALLOCATOR *pba,sh_page_VIRTUAL_ADDRESS start_va,sh_uint64 area_pages_amount,sh_uint64 block_pages);
+// Allocate a block and return corresponding pointer
+SH_STATUS sh_pba_alloc(sh_pba_PAGE_BLOCK_ALLOCATOR *pba,sh_page_PAGE_TABLE_POOL *ptp,sh_page_VIRTUAL_ADDRESS *ptr);
+#endif