Fix linker RWX warning

Rakefile

@@ -350,7 +350,7 @@ rule '.elna.o' => ->(match) {
   architecture, *path_components = relative_from_tmp(match).to_a
   path_components[-1] = path_components.last.ext('')
 
-  [File.join(path_components), TMP + architecture]
+  [File.join('source', path_components), TMP + architecture]
 } do |t|
   options = BuildTarget.new relative_from_tmp(t.name).first
   compiler = options.rootfs + "bin/#{options.target}-gcc"
@@ -366,10 +366,11 @@ rule 'kernel.elf' => ->(match) {
 
   arch_objects = FileList["arch/#{instruction_set}/*.s"]
     .map { |source| Pathname.new(source).relative_path_from("arch/#{instruction_set}").sub_ext('.s.o') }
-    .map { |source| TMP + architecture + source }
-    .map(&:to_path)
+  source_objects = FileList['source/*.elna']
+    .map { |source| Pathname.new(source).relative_path_from('source').sub_ext('.elna.o') }
+  objects = (arch_objects + source_objects).map { |source| (TMP + architecture + source).to_s }
 
-  arch_objects + FileList['*.elna'].map { |source| (TMP + architecture + source).to_path + '.o' } << 'kernel.ld'
+  objects << "arch/#{instruction_set}/kernel.ld"
 } do |t|
   options = BuildTarget.new relative_from_tmp(t.name).first
   compiler = options.rootfs + "bin/#{options.target}-gcc"

arch/riscv/kernel.ld

@@ -1,25 +1,28 @@
-OUTPUT_ARCH( "riscv" )
+OUTPUT_ARCH("riscv")
 OUTPUT_FORMAT("elf32-littleriscv")
-ENTRY(boot)
+ENTRY(_entry)
+
+PHDRS {
+	text PT_LOAD FLAGS(5);
+	data PT_LOAD FLAGS(6);
+}
 
 SECTIONS {
-    . = 0x80200000;
+    .text 0x80200000 : {
 		__kernel_base = .;
-
-    .text :{
         KEEP(*(.text.boot));
         *(.text .text.*);
-    }
+    } :text
 
-    .rodata : ALIGN(4) {
+    .rodata : ALIGN(16) {
         *(.rodata .rodata.*);
     }
 
-    .data : ALIGN(4) {
+    .data : ALIGN(16) {
         *(.data .data.*);
-    }
+    } :data
 
-    .bss : ALIGN(4) {
+    .bss : ALIGN(16) {
         __bss = .;
         *(.bss .bss.* .sbss .sbss.*);
         __bss_end = .;
@@ -29,6 +32,6 @@ SECTIONS {
     . += 128 * 1024; /* 128KB */
     __stack_top = .;
 
-	. = ALIGN(4096);
+	. = ALIGN(CONSTANT(MAXPAGESIZE));
 	__free_ram = .;
 }

arch/riscv/kernel.s

@@ -1,4 +1,4 @@
-.global kernel_main, __bss, __bss_end, __stack_top
+.global _entry, __bss, __bss_end, __stack_top
 
 .section .rodata
 
@@ -215,7 +215,7 @@ panic:
 	ret
 
 .section .text.boot
-boot:
+_entry:
 	la t0, __stack_top
 	mv sp, t0 # Set the stack pointer