[libj6] Move remaining j6 headers out of src/include

This means the kernel now depends on libj6. I've added the macro
definition __j6kernel when building for the kernel target, so I can
remove parts with #ifdefs.

src/kernel/kernel.module

@@ -6,7 +6,7 @@ kernel = module("kernel",
     output = "jsix.elf",
     targets = [ "kernel" ],
     description = "jsix kernel",
-    deps = [ "util", "cpu", "bootproto" ],
+    deps = [ "util", "cpu", "bootproto", "j6" ],
     includes = [ "." ],
     sources = [
         "apic.cpp",

src/kernel/memory_bootstrap.cpp

@@ -2,7 +2,6 @@
 
 #include <arch/memory.h>
 #include <bootproto/kernel.h>
-#include <j6/init.h>
 #include <util/no_construct.h>
 
 #include "assert.h"

src/kernel/scheduler.cpp

@@ -1,6 +1,5 @@
 #include <stddef.h>
 
-#include <j6/init.h>
 #include <util/spinlock.h>
 
 #include "apic.h"

src/libraries/j6/include/j6/syscalls.h.cog

@@ -1,6 +1,10 @@
 #pragma once
 // vim: ft=cpp
 
+// The kernel depends on libj6 for some shared code,
+// but should not include the user-specific code.
+#ifndef __j6kernel
+
 #include <j6/types.h>
 
 #ifdef __cplusplus
@@ -42,3 +46,5 @@ for id, scope, method in syscalls.methods:
 #ifdef __cplusplus
 }
 #endif
+
+#endif // __j6kernel

src/libraries/j6/init.cpp

@@ -1,3 +1,7 @@
+// The kernel depends on libj6 for some shared code,
+// but should not include the user-specific code.
+#ifndef __j6kernel
+
 #include <stdint.h>
 #include <j6/init.h>
 #include <j6/types.h>
@@ -39,3 +43,5 @@ _init_libj6(uint64_t *rsp)
         }
     }
 }
+
+#endif // __j6kernel

src/libraries/j6/j6.module

@@ -5,10 +5,15 @@ j6 = module("j6",
     includes = [ "include" ],
     sources = [
         "init.cpp",
+        "include/j6/syscalls.h.cog",
+        "syscalls.s.cog",
     ])
 
 from glob import glob
 definitions = glob('definitions/**/*.def', recursive=True)
-j6.add_input("include/j6/syscalls.h.cog", deps=definitions)
-j6.add_input("syscalls.s.cog", deps=definitions)
+
+j6.add_depends([
+        "include/j6/syscalls.h.cog",
+        "syscalls.s.cog",
+    ], definitions)
 

src/libraries/j6/syscalls.s.cog

@@ -27,11 +27,12 @@
 ;   ctx.parse("syscalls.def")
 ;   syscalls = ctx.interfaces['syscalls']
 ;
-;   for id, scope, method in syscalls.methods:
-;       if scope:
-;           name = f"{scope.name}_{method.name}"
-;       else:
-;           name = method.name
-;       cog.outl(f"define_syscall {name:20}, {id}")
+;   if target != "kernel":
+;       for id, scope, method in syscalls.methods:
+;           if scope:
+;               name = f"{scope.name}_{method.name}"
+;           else:
+;               name = method.name
+;           cog.outl(f"define_syscall {name:20}, {id}")
 ; ]]]
 ; [[[end]]]