Add build system scaffolding and libc headers

9 files changed, 67 insertions, 0 deletions

diff --git a/lib/libc/mman/mlock.c b/lib/libc/mman/mlock.c
new file mode 100644
index 00000000..a7f48b27
--- /dev/null
+++ b/lib/libc/mman/mlock.c
@@ -0,0 +1,7 @@
+#include <syscall.h>
+#include <sys/mman.h>
+
+int mlock(const void *addr, size_t len)
+{
+	return syscall(mlock, addr, len);
+}
diff --git a/lib/libc/mman/mlockall.c b/lib/libc/mman/mlockall.c
new file mode 100644
index 00000000..df4dcbd1
--- /dev/null
+++ b/lib/libc/mman/mlockall.c
@@ -0,0 +1,7 @@
+#include <syscall.h>
+#include <sys/mman.h>
+
+int mlockall(int flags)
+{
+	return syscall(mlockall, flags);
+}
diff --git a/lib/libc/mman/mmap.c b/lib/libc/mman/mmap.c
new file mode 100644
index 00000000..d7918447
--- /dev/null
+++ b/lib/libc/mman/mmap.c
@@ -0,0 +1,10 @@
+#include <stddef.h>
+#include <linux/mman.h>
+#include <syscall.h>
+
+typedef __INT64_TYPE__ off_t;
+
+void *mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off)
+{
+	return (void *)syscall(mmap, addr, len, prot, flags, fildes, off);
+}
diff --git a/lib/libc/mman/mprotect.c b/lib/libc/mman/mprotect.c
new file mode 100644
index 00000000..ab5c6059
--- /dev/null
+++ b/lib/libc/mman/mprotect.c
@@ -0,0 +1,7 @@
+#include <syscall.h>
+#include <sys/mman.h>
+
+int mprotect(void *addr, size_t len, int prot)
+{
+	return syscall(mprotect, addr, len, prot);
+}
diff --git a/lib/libc/mman/msync.c b/lib/libc/mman/msync.c
new file mode 100644
index 00000000..b8dab1a9
--- /dev/null
+++ b/lib/libc/mman/msync.c
@@ -0,0 +1,7 @@
+#include <syscall.h>
+#include <sys/mman.h>
+
+int msync(void *addr, size_t len, int flags)
+{
+	return syscall(msync, addr, len, flags);
+}
diff --git a/lib/libc/mman/munlock.c b/lib/libc/mman/munlock.c
new file mode 100644
index 00000000..b934c87d
--- /dev/null
+++ b/lib/libc/mman/munlock.c
@@ -0,0 +1,7 @@
+#include <syscall.h>
+#include <sys/mman.h>
+
+int munlock(const void *addr, size_t len)
+{
+	return syscall(munlock, addr, len);
+}
diff --git a/lib/libc/mman/munlockall.c b/lib/libc/mman/munlockall.c
new file mode 100644
index 00000000..c7f9c8d2
--- /dev/null
+++ b/lib/libc/mman/munlockall.c
@@ -0,0 +1,7 @@
+#include <syscall.h>
+#include <sys/mman.h>
+
+int munlockall(void)
+{
+	return syscall(munlockall);
+}
diff --git a/lib/libc/mman/munmap.c b/lib/libc/mman/munmap.c
new file mode 100644
index 00000000..6929fc64
--- /dev/null
+++ b/lib/libc/mman/munmap.c
@@ -0,0 +1,8 @@
+#include <sys/mman.h>
+#include <syscall.h>
+#include <features.h>
+
+int munmap(void *addr, size_t len)
+{
+	return syscall(munmap, addr, len);
+}
diff --git a/lib/libc/mman/posix_madvise.c b/lib/libc/mman/posix_madvise.c
new file mode 100644
index 00000000..a19adec2
--- /dev/null
+++ b/lib/libc/mman/posix_madvise.c
@@ -0,0 +1,7 @@
+#include <sys/mman.h>
+#include <syscall.h>
+
+int posix_madvise(void *addr, size_t len, int advice)
+{
+	return syscall(madvise, addr, len, advice);
+}