[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.

configs/kernel-debug.yaml

@@ -23,7 +23,8 @@ variables:
     "-ggdb",
 
     "-D__ELF__",
-    "-D__JSIX__",
+    "-D__jsix__",
+    "-D__j6kernel",
     "-U__linux",
     "-U__linux__",
     "-DPRINTF_ALIAS_STANDARD_FUNCTION_NAMES=1",

configs/rules.ninja

@@ -37,7 +37,7 @@ rule compile_asm
   deps = gcc
 
 rule parse_cog
-  command = $cog -o $out -d $cogflags $in
+  command = $cog -o $out -d -D target=$target $cogflags $in
   description = Parsing $name
 
 rule exe

configs/user-debug.yaml

@@ -11,7 +11,7 @@ variables:
     "-g",
 
     "-D__ELF__",
-    "-D__JSIX__",
+    "-D__jsix__",
     "-U__linux",
     "-U__linux__",
 

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 target != "kernel":
-;       if scope:
+;       for id, scope, method in syscalls.methods:
-;           name = f"{scope.name}_{method.name}"
+;           if scope:
-;       else:
+;               name = f"{scope.name}_{method.name}"
-;           name = method.name
+;           else:
-;       cog.outl(f"define_syscall {name:20}, {id}")
+;               name = method.name
+;           cog.outl(f"define_syscall {name:20}, {id}")
 ; ]]]
 ; [[[end]]]