sys/mod: Basic kernel module loading

etc/x86_64-unknown-none.json

@@ -12,15 +12,11 @@
   "executables": true,
   "panic-strategy": "abort",
   "features": "-avx,-sse,+soft-float",
+  "dynamic-linking": true,
+  "relocation-model": "pic",
 
   "has-thread-local": false,
 
   "linker": "rust-lld",
-  "linker-flavor": "ld.lld",
-
-  "pre-link-args": {
-    "ld.lld": [
-      "-Tetc/x86_64-unknown-none.ld"
-    ]
-  }
+  "linker-flavor": "ld.lld"
 }

etc/x86_64-unknown-none.ld

@@ -5,7 +5,6 @@ KERNEL_VIRT_OFFSET = 0xFFFFFF8000000000;
 
 SECTIONS {
     . = KERNEL_PHYS_BASE;
-    PROVIDE(__kernel_phys_start = .);
     PROVIDE(__kernel_start = . + KERNEL_VIRT_OFFSET);
 
     .text.entry : {
@@ -19,6 +18,10 @@ SECTIONS {
         *(.text*)
     }
 
+    .export.text : AT(. - KERNEL_VIRT_OFFSET) {
+        KEEP(*(.export.text*))
+    }
+
     . = ALIGN(4K);
     .rodata : AT(. - KERNEL_VIRT_OFFSET) {
         *(.eh_frame*)
@@ -46,5 +49,4 @@ SECTIONS {
     PROVIDE(__bss_end_phys = . - KERNEL_VIRT_OFFSET);
 
     PROVIDE(__kernel_end = .);
-    PROVIDE(__kernel_size = . - KERNEL_VIRT_OFFSET - KERNEL_PHYS_BASE);
 };