usr: Add initial userland

Signed-off-by: Ian Moffett <ian@osmora.org>

3 files changed, 75 insertions, 0 deletions

diff --git a/usr.sbin/init/Makefile b/usr.sbin/init/Makefile
new file mode 100644
index 0000000..bee9f3a
--- /dev/null
+++ b/usr.sbin/init/Makefile
@@ -0,0 +1,6 @@
+include user.mk
+
+CFILES = $(shell find . -name "*.c")
+
+init:
+	gcc $(CFILES) -o $@ $(INTERNAL_CFLAGS)
diff --git a/usr.sbin/init/main.c b/usr.sbin/init/main.c
new file mode 100644
index 0000000..8ef90d3
--- /dev/null
+++ b/usr.sbin/init/main.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+int
+main(void)
+{
+    return 0;
+}
diff --git a/usr.sbin/link.ld b/usr.sbin/link.ld
new file mode 100644
index 0000000..da2346d
--- /dev/null
+++ b/usr.sbin/link.ld
@@ -0,0 +1,35 @@
+ENTRY(_start)
+
+PHDRS
+{
+    text          PT_LOAD    FLAGS((1 << 0) | (1 << 2)) ; /* Execute + Read */
+    rodata        PT_LOAD    FLAGS((1 << 2)) ;            /* Read only */
+    data          PT_LOAD    FLAGS((1 << 1) | (1 << 2)) ; /* Write + Read */
+}
+
+SECTIONS
+{
+    . = 0x10000;
+
+    .text : {
+        *(.text)
+        *(.text.*)
+    } :text
+
+    .rodata : ALIGN(8) {
+        *(.rodata)
+        *(.rodata.*)
+    } :rodata
+
+    .data : ALIGN(8) {
+        *(.data)
+        *(.data.*)
+    } :data
+
+    .bss : ALIGN(8) {
+        __bss_start = .;
+        *(.bss)
+        *(.bss.*)
+        __bss_end = .;
+    } :data
+}