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regularalloc.c

@@ -0,0 +1,41 @@
+//
+// Created by Akilan on 07/03/2024.
+//
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include <dlfcn.h>
+#include <sys/fcntl.h>
+#include <sys/stat.h>
+
+#define FILENAME "/dev/contigmem"
+
+void *malloc(size_t sz) {
+    int *ptr;
+    int len = sz + sizeof(sz);
+
+    ptr = mmap(0, len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+
+    *ptr = len;
+
+    // To probably set exact bounds on it
+    return (void *)(&ptr[1]);
+}
+
+// Currently not implementing free
+// This is to ensure the PureCap
+// program can terminate itself
+// even though there is memory not
+// cleared.
+void free(void *ptr) {
+    int *ptr = (int *)ptr;
+    int len;
+
+    ptr--;
+    len = *ptr;
+
+    munmap((void *)ptr, len);
+}