kern: Add initial pirho compiler sources

The pirho compiler is a ring-0 compiler used to compile core parts of
the kernel during updates and installs from the initramfs.

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

1 files changed, 75 insertions, 0 deletions

diff --git a/src/sys/np/core/np_init.c b/src/sys/np/core/np_init.c
new file mode 100644
index 0000000..6b50b8e
--- /dev/null
+++ b/src/sys/np/core/np_init.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and L5 engineers
+ * 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 the project 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.
+ */
+
+#include <sys/errno.h>
+#include <sys/namei.h>
+#include <sys/syslog.h>
+#include <os/omar.h>
+#include <os/np.h>
+
+#define pr_trace(fmt, ...) printf("pirho: " fmt, ##__VA_ARGS__)
+
+int
+np_init(const char *in_path, struct np_work *workp)
+{
+    int error;
+    struct nameidata nd;
+    struct lex_token tok;
+
+    if (in_path == NULL || workp == NULL) {
+        return -EINVAL;
+    }
+
+    workp->line_no = 1;
+    workp->source_size = initrd_open(in_path, &workp->source);
+
+    if (workp->source_size < 0) {
+        pr_trace("failed to open '%s'\n", in_path);
+        return workp->source_size;
+    }
+
+    /* Initialize the lexer */
+    error = lex_init(&workp->lex_st, workp);
+    if (error < 0) {
+        pr_trace("failed to initialize lexer\n");
+        return error;
+    }
+
+    return 0;
+}
+
+int
+np_compile(struct np_work *work)
+{
+    if (work == NULL) {
+        return -EINVAL;
+    }
+
+    return 0;
+}