Cleaning up code

Moving things around, deleting some callins to asm (namely get_rdtsc)
since I don't need them right yet

rust_experiments/src/lib.rs

@@ -10,7 +10,6 @@ extern crate rlibc;
 
 extern {
     fn asm_printchar() -> u32;
-    fn get_rdtsc() -> u32;
     fn call_interrupt();
 }
 

rust_experiments/src/long_mode_init.asm

@@ -1,6 +1,5 @@
 global long_mode_start
 global asm_printchar
-global get_rdtsc
 global call_interrupt
 extern rust_interrupt_handler
 extern rust_handle_keyboard
@@ -70,13 +69,8 @@ asm_printchar:
     mov rax, 0x1
     ret
 
-get_rdtsc:
-    rdtsc
-    ret
 
-call_interrupt:
-    int 9
-    ret
+; ----------- IDT section ---------------------
 
 %define PIC1_COMMAND 0x20
 %define PIC1_DATA 0x21
@@ -85,7 +79,6 @@ call_interrupt:
 
 %define END_OF_INTERRUPT 0x20
 
-
 %macro interrupt_handler_preamble 0
     push rax
     push rcx
@@ -128,14 +121,7 @@ handle_keyboard:
 
 
 handle_timer:
-    push rax
-    push rcx
-    push rdx
-    push r8
-    push r9
-    push r10
-    push r11
-    pushfq
+    interrupt_handler_preamble
 
     call rust_handle_timer
 
@@ -143,15 +129,13 @@ handle_timer:
     out PIC1_COMMAND, al
     out PIC2_COMMAND, al
 
-    popfq
-    pop r11
-    pop r10
-    pop r9
-    pop r8
-    pop rdx
-    pop rcx
-    pop rax
-    iretq
+    interrupt_handler_final
+
+handle_double_fault:
+    interrupt_handler_preamble
+    cli
+    hlt
+    interrupt_handler_final
 
 ;expects name of label, offset in table
 %macro load_IDT_entry 2
@@ -175,12 +159,13 @@ setup_IDT:
 
     ret
 
+idt64:
+    resb 50*16
+.pointer:
+    dw .pointer - idt64
+    dq idt64
 
-handle_double_fault:
-    interrupt_handler_preamble
-    cli
-    hlt
-    interrupt_handler_final
+; --------- end of IDT section --------
 
 setup_PIT:
 %define PIT_CH0 0x40
@@ -197,9 +182,3 @@ setup_PIT:
 
     ret
 
-idt64:
-    resb 50*16
-.pointer:
-    dw .pointer - idt64
-    dq idt64
-