Make aarch64 compilable

Architecture/aarch64/runtime/crt1.S

@@ -1,17 +1,17 @@
-.section ".text.boot"
+// .section ".text.boot"
 
-.global _start
-    .org 0x80000
-_start:
-    ldr     x5, =_start
-    mov     sp, x5
-    ldr     x5, =_kernel_rodata_end
-    ldr     w6, =_bss_size
-1:  cbz     w6, 2f
-    str     xzr, [x5], #8
-    sub     w6, w6, #1
-    cbnz    w6, 1b
-2:  bl      arm64Entry
-Halt:
-    wfe
-    b Halt
+// .global _start
+//     .org 0x80000
+// _start:
+//     ldr     x5, =_start
+//     mov     sp, x5
+//     ldr     x5, =_kernel_rodata_end
+//     ldr     w6, =_bss_size
+// 1:  cbz     w6, 2f
+//     str     xzr, [x5], #8
+//     sub     w6, w6, #1
+//     cbnz    w6, 1b
+// 2:  bl      arm64Entry
+// Halt:
+//     wfe
+//     b Halt

Architecture/aarch64/runtime/crti.S

@@ -1,13 +1,13 @@
-.section .init
-.global _init
-.type _init, @function
-_init:
+// .section .init
+// .global _init
+// .type _init, @function
+// _init:
 //	push %rbp
 //	movq %rsp, %rbp
 
-.section .fini
-.global _fini
-.type _fini, @function
-_fini:
+// .section .fini
+// .global _fini
+// .type _fini, @function
+// _fini:
 //	push %rbp
 //	movq %rsp, %rbp