Move sw to sw-old and hw to hw-altium, add kicad files

1 files changed, 58 insertions, 0 deletions

diff --git a/sw-old/z80/kernel/process.c b/sw-old/z80/kernel/process.c
new file mode 100644
index 0000000..7d8db89
--- /dev/null
+++ b/sw-old/z80/kernel/process.c
@@ -0,0 +1,58 @@
+#include "process.h"
+
+static struct process proc_table[PID_COUNT_MAX];
+static struct process *current_proc;
+
+pid_t newpid(void)
+{
+    int i;
+    static pid_t last_pid = 0;
+
+    for (i = 0; i < PID_COUNT_MAX; i++, last_pid++) {
+        if (last_pid == PID_COUNT_MAX) {
+            last_pid = 0;
+            continue;            
+        }
+
+        if (!proc_table[last_pid].running)
+            break;
+    }
+
+    if (i >= PID_COUNT_MAX)
+        return 0;
+
+    return last_pid;
+}
+
+int fork(void)
+{
+    int i, p;
+    pid_t child_pid = newpid();
+
+    if (child_pid == 0)
+        return -1;
+
+
+    for (i = 0; i < current_proc->pages; i++) {
+        p = page_new();
+
+        if (p == -1) {
+            return -2;
+        }
+
+        // TODO: use memcpy()
+        // SDCC does not allow assignemnts of structs
+
+        // proc_table[child_pid].page[i] = p;
+    }
+}
+
+int exec(char *path, char *args)
+{
+    
+}
+
+int spawn(char *path, char *args)
+{
+    
+}