Add build system scaffolding and libc headers

1 files changed, 27 insertions, 0 deletions

diff --git a/include/arch/x86_64/asm-generic/mman.h b/include/arch/x86_64/asm-generic/mman.h
new file mode 100644
index 00000000..f4c1b653
--- /dev/null
+++ b/include/arch/x86_64/asm-generic/mman.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __ASM_GENERIC_MMAN_H
+#define __ASM_GENERIC_MMAN_H
+
+#include <asm-generic/mman-common.h>
+
+#define MAP_GROWSDOWN  0x0100 /* stack-like segment */
+#define MAP_DENYWRITE  0x0800 /* ETXTBSY */
+#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
+#define MAP_LOCKED     0x2000 /* pages are locked */
+#define MAP_NORESERVE  0x4000 /* don't check for reservations */
+
+/*
+ * Bits [26:31] are reserved, see asm-generic/hugetlb_encode.h
+ * for MAP_HUGETLB usage
+ */
+
+#define MCL_CURRENT 1 /* lock all current mappings */
+#define MCL_FUTURE  2 /* lock all future mappings */
+#define MCL_ONFAULT 4 /* lock all pages that are faulted in */
+
+#define SHADOW_STACK_SET_TOKEN \
+	(1ULL << 0) /* Set up a restore token in the shadow stack */
+#define SHADOW_STACK_SET_MARKER \
+	(1ULL << 1) /* Set up a top of stack marker in the shadow stack */
+
+#endif /* __ASM_GENERIC_MMAN_H */