rename common to src

+ I keep starting to type src and wondering why autocomplete won't work,
  I guess src is just uncounciously a better name

1 files changed, 56 insertions, 0 deletions

diff --git a/src/proc.c b/src/proc.c
new file mode 100644
index 0000000..b91c486
--- /dev/null
+++ b/src/proc.c
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: copyleft-next-0.3.1 */
+/* Copyright 2021 - 2022, Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
+
+/**
+ * @file proc.c
+ * Process handling, might be merged into \ref src/tcb.c.
+ */
+
+#include <kmi/elf.h>
+#include <kmi/proc.h>
+#include <kmi/conf.h>
+#include <kmi/string.h>
+#include <kmi/initrd.h>
+#include <arch/arch.h>
+#include <arch/proc.h>
+#include <arch/cpu.h>
+
+stat_t prepare_proc(struct tcb *t, vm_t bin, vm_t interp)
+{
+	vm_t entry = load_elf(t, bin, interp);
+	if (!entry)
+		return ERR_INVAL;
+
+	alloc_stack(t);
+	set_thread(t);
+	set_return(t, entry);
+	return OK;
+}
+
+stat_t init_proc(void *fdt)
+{
+	init_tcbs();
+
+	/** \todo cleanup or something */
+	struct tcb *t = create_proc(NULL);
+	if (!t)
+		return ERR_OOMEM;
+
+	/* we're the first cpu, so we always have ID 0 */
+	t->cpu_id = 0;
+
+	/* force tcb for core */
+	tcb_assign(t);
+
+	/* set current tcb */
+	use_tcb(t);
+
+	/* init process has all capabilities */
+	set_caps(t->caps, 0, CAP_CAPS | CAP_PROC | CAP_CALL | CAP_POWER);
+
+	/* allocate stacks after ELF file to make sure nothing of importance
+	 * clashes */
+	return prepare_proc(t, get_init_base(fdt), 0);
+	/** \todo start one thread per core, with special handling for init in
+	 * that each thread starts at the entry point of init? */
+}