[build] Move init to its own target

In order to allow -fpic and -fpie in the user target, move init to it's
own target -- it needs its own special build rules to make it loadable
by boot.

assets/build/config.debug.yaml

@@ -0,0 +1,9 @@
+---
+ccflags: [
+  "-g3",
+  "-ggdb",
+]
+
+ldflags: [
+  "-g",
+]

assets/build/target.boot.yaml

@@ -12,8 +12,7 @@ ccflags: [
   "-mno-red-zone",
   "-fshort-wchar",
   "-fno-omit-frame-pointer",
-  "-ggdb",
-  "-g3" ]
+]
 
 cxxflags: [ "-fno-exceptions", "-fno-rtti" ]
 
@@ -23,5 +22,5 @@ ldflags: [
   "-Wl,-entry:efi_main",
   "-Wl,-subsystem:efi_application",
   "-fuse-ld=lld-link",
-  "-g" ]
+]
 

assets/build/target.init.yaml

@@ -0,0 +1,34 @@
+---
+ccflags: [
+  "--target=x86_64-jsix-elf",
+  "-fno-omit-frame-pointer",
+  "-fno-stack-protector",
+
+  "-fvisibility=hidden",
+  "-fvisibility-inlines-hidden",
+
+  "-D__ELF__",
+  "-D__jsix__",
+  "-U__linux",
+  "-U__linux__",
+
+  "--sysroot='${source_root}/sysroot'"
+]
+
+
+cxxflags: [
+  "-fno-exceptions",
+  "-fno-rtti",
+]
+
+ldflags: [
+  "-Bstatic",
+  "-m", "elf_x86_64",
+  "--sysroot='${source_root}/sysroot'",
+  "--no-eh-frame-hdr",
+  "-L", "${source_root}/sysroot/lib",
+  "-z", "separate-code",
+  "-lc++", "-lc++abi", "-lunwind",
+  "--no-dependent-libraries",
+]
+

assets/build/target.kernel.yaml

@@ -21,9 +21,6 @@ ccflags: [
   "-fvisibility=hidden",
   "-fvisibility-inlines-hidden",
 
-  "-g3",
-  "-ggdb",
-
   "-D__ELF__",
   "-D__jsix__",
   "-D__j6kernel",
@@ -32,7 +29,8 @@ ccflags: [
   "-DPRINTF_ALIAS_STANDARD_FUNCTION_NAMES=1",
   "-DPRINTF_INCLUDE_CONFIG_H=1",
 
-  "--sysroot='${source_root}/sysroot'" ]
+  "--sysroot='${source_root}/sysroot'"
+]
 
 
 cflags: [ '-nostdinc' ]
@@ -44,11 +42,11 @@ cxxflags: [
 ]
 
 ldflags: [
-  "-g",
   "-m", "elf_x86_64",
   "-nostdlib",
   "-Bstatic",
   "--no-eh-frame-hdr",
   "-z", "norelro",
-  "-z", "separate-code" ]
+  "-z", "separate-code"
+]
 

assets/build/target.user.exe.yaml

@@ -0,0 +1,9 @@
+---
+ccflags: [
+  "-fpie"
+]
+
+ldflags: [
+  "-pie",
+  "--dynamic-linker", "/tools/ld.so",
+]

assets/build/target.user.yaml

@@ -5,11 +5,6 @@ ccflags: [
   "--target=x86_64-jsix-elf",
   "-fno-omit-frame-pointer",
   "-fno-stack-protector",
-  "-fpic",
-  "-fpie",
-
-  "-g3",
-  "-ggdb",
 
   "-fvisibility=hidden",
   "-fvisibility-inlines-hidden",
@@ -19,7 +14,10 @@ ccflags: [
   "-U__linux",
   "-U__linux__",
 
-  "--sysroot='${source_root}/sysroot'" ]
+  "--sysroot='${source_root}/sysroot'",
+
+  "-fpic"
+]
 
 
 cxxflags: [
@@ -28,7 +26,6 @@ cxxflags: [
   ]
 
 ldflags: [
-  "-g",
   "-m", "elf_x86_64",
   "--sysroot='${source_root}/sysroot'",
   "--no-eh-frame-hdr",
@@ -36,6 +33,5 @@ ldflags: [
   "-z", "separate-code",
   "-lc++", "-lc++abi", "-lunwind",
   "--no-dependent-libraries",
-  "--dynamic-linker", "/tools/ld.so",
 ]
 

scripts/bonnibel/manifest.py

@@ -26,7 +26,7 @@ class Manifest:
                 name="kernel", target="kernel")
 
         self.init = self.__build_entry(modules,
-                config.get("init", None))
+                config.get("init", None), target="init")
 
         self.panics = [self.__build_entry(modules, i, target="kernel")
                 for i in config.get("panic", tuple())]

src/user/srv.init/init.module

@@ -1,7 +1,7 @@
 # vim: ft=python
 
 init = module("srv.init",
-    targets = [ "user" ],
+    targets = [ "init" ],
     deps = [ "libc", "elf", "bootproto", "zstd" ],
     description = "Init server",
     ld_script = "init.ld",