user/libc: preparation for dlmalloc port

3 files changed, 24 insertions, 0 deletions

diff --git a/src/user/lib/include/stdlib.h b/src/user/lib/include/stdlib.h
index 5916ebc..de6e550 100644
--- a/src/user/lib/include/stdlib.h
+++ b/src/user/lib/include/stdlib.h
@@ -3,3 +3,5 @@
 
 void *malloc(size_t size);
 void free(void *ptr);
+
+_Noreturn void abort(void);
diff --git a/src/user/lib/include/sys/mman.h b/src/user/lib/include/sys/mman.h
new file mode 100644
index 0000000..074ebe2
--- /dev/null
+++ b/src/user/lib/include/sys/mman.h
@@ -0,0 +1,18 @@
+#pragma once
+#include <camellia/flags.h>
+#include <sys/types.h>
+
+#define MMAP_UNSUPPORTED 0xFFFF
+
+#define PROT_EXEC 1
+#define PROT_NONE MMAP_UNSUPPORTED
+#define PROT_READ 1
+#define PROT_WRITE 1
+
+#define MAP_FIXED MMAP_UNSUPPORTED
+#define MAP_PRIVATE 0
+#define MAP_SHARED MMAP_UNSUPPORTED
+#define MAP_ANONYMOUS 1
+
+void *mmap(void *addr, size_t len, int prot, int flags, int fd, off_t off);
+int munmap(void *addr, size_t len);
diff --git a/src/user/lib/include/sys/types.h b/src/user/lib/include/sys/types.h
new file mode 100644
index 0000000..3bc3f7f
--- /dev/null
+++ b/src/user/lib/include/sys/types.h
@@ -0,0 +1,4 @@
+#pragma once
+#include <stddef.h>
+
+typedef long long off_t;