Kernel: Cleanup constructor calls

kernel/arch/x86_64/boot.S

@@ -216,12 +216,11 @@ higher_half:
 	# call global constuctors
 	call _init
 
-	movq $__init_array_start, %rbx
+	movq $g_init_array_start, %rbx
 	jmp 2f
- 1: movq (%rbx), %rax
-    call *%rax
+ 1: call *(%rbx)
 	addq $8, %rbx
- 2: cmpq $__init_array_end, %rbx
+ 2: cmpq $g_init_array_end, %rbx
 	jne 1b
 
 	# call to the kernel itself (clear rbp for stacktrace)

kernel/arch/x86_64/crti.S

@@ -14,11 +14,3 @@ _fini:
 	pushq %rbp
 	movq %rsp, %rbp
 	/* gcc will nicely put the contents of crtbegin.o's .fini section here. */
-
-.section .init_array
-.global __init_array_start
-__init_array_start:
-
-.section .fini_array
-.global __fini_array_start
-__fini_array_start:

kernel/arch/x86_64/crtn.S

@@ -8,11 +8,3 @@
 	/* gcc will nicely put the contents of crtend.o's .fini section here. */
 	popq %rbp
 	ret
-
-.section .init_array
-.global __init_array_end
-__init_array_end:
-
-.section .fini_array
-.global __fini_array_end
-__fini_array_end:

kernel/arch/x86_64/linker.ld

@@ -30,6 +30,12 @@ SECTIONS
 	{
 		*(.rodata.*)
 	}
+	.init_array ALIGN(4K) : AT(ADDR(.init_array) - KERNEL_OFFSET)
+	{
+		g_init_array_start = .;
+		*(.init_array)
+		g_init_array_end = .;
+	}
 	.data ALIGN(4K) : AT(ADDR(.data) - KERNEL_OFFSET)
 	{
 		g_kernel_writable_start = .;