Move thread logic to linux/thread.c, rewrite os and idle threads in asm.

linux/thread.c

@@ -0,0 +1,39 @@
+#include <inttypes.h>
+#include <setjmp.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "../umka.h"
+
+sigjmp_buf trampoline;
+
+
+__attribute__((__stdcall__))
+uint32_t umka_new_sys_threads(void (*func)(void), void *stack, int type) {
+    (void)type;
+    (void)func;
+    fprintf(stderr, "umka_new_sys_threads before\n");
+//    kos_slot_base[kos_task_count].fpu_state = malloc(4096);
+    fprintf(stderr, "kos_task_count: %d\n", kos_task_count);
+    if (!sigsetjmp(trampoline, 1)) {
+        __asm__ __inline__ __volatile__ (
+        "mov    esp, eax;"
+        "push   ecx"
+        :
+        : "a"(stack),
+          "c"(func)
+        : "memory");
+        if (!sigsetjmp(*kos_slot_base[kos_task_count++].fpu_state, 1)) {
+            longjmp(trampoline, 1);
+        } else {
+            __asm__ __inline__ __volatile__ (
+            "pop    ecx;"
+            "call   ecx"
+            :
+            :
+            : "memory");
+        }
+    }
+    fprintf(stderr, "umka_new_sys_threads after\n");
+    return 0;
+}
+

linux/thread.h

@@ -0,0 +1,8 @@
+#ifndef THREAD_H_INCLUDED
+#define THREAD_H_INCLUDED
+
+#include <inttypes.h>
+
+uint32_t umka_new_sys_threads(void (*func)(void), void *stack, int type);
+
+#endif  // THREAD_H_INCLUDED