interrupts.S

   1         /*
   2          * interrupts.S
   3          *
   4          *      Interrupt handlers.
   5          *
   6          */
   7
   8 #define ASM
   9 #include <marmot.h>
  10
  11         .macro  SaveGP
  12         pushq   %rax
  13         pushq   %rbx
  14         pushq   %rcx
  15         pushq   %rdx
  16         pushq   %rbp
  17         pushq   %rsi
  18         pushq   %rdi
  19         pushq   %r8
  20         pushq   %r9
  21         pushq   %r10
  22         pushq   %r11
  23         pushq   %r12
  24         pushq   %r13
  25         pushq   %r14
  26         pushq   %r15
  27         .endm
  28
  29         .macro  RestoreGP
  30         popq    %r15
  31         popq    %r14
  32         popq    %r13
  33         popq    %r12
  34         popq    %r11
  35         popq    %r10
  36         popq    %r9
  37         popq    %r8
  38         popq    %rdi
  39         popq    %rsi
  40         popq    %rbp
  41         popq    %rdx
  42         popq    %rcx
  43         popq    %rbx
  44         popq    %rax
  45         .endm
  46
  47
  48         .macro  FatalWithCode name
  49         .global \name
  50 \name:  jmp     Fatal64
  51         .endm
  52
  53         .macro  FatalNoCode name
  54         .global \name
  55 \name:  pushq   $0
  56         jmp     Fatal64
  57         .endm
  58
  59         .macro  DumpIH name
  60         .global \name
  61 \name:  pushq   $0
  62         call    Dump64
  63         iretq
  64         .endm
  65
  66         .macro  SpringboardWithCode name landing
  67         .global \name
  68 \name:  SaveGP
  69         leaq    (15 * 16)(%rsp), %rdi
  70         call    \landing
  71         RestoreGP
  72         addq    $8, %rsp
  73         iretq
  74         .endm
  75
  76         .macro irqm irq name
  77         .global _IRQStub_\name
  78 _IRQStub_\name:
  79         cld
  80         SaveGP
  81         movl    $\irq, %edi
  82         call    DoIRQ
  83         RestoreGP
  84         iretq
  85         .endm
  86
  87
  88         .section .text
  89         .code64
  90
  91         /* processor fault/exception handlers */
  92
  93         FatalNoCode   DE64
  94         DumpIH        DB64
  95         DumpIH        NMI64
  96         DumpIH        BP64
  97         DumpIH        OF64
  98         FatalNoCode   BR64
  99         FatalNoCode   UD64
 100         FatalNoCode   NM64
 101         FatalWithCode DF64
 102         /* vector 9 is not used */
 103         FatalWithCode TS64
 104         FatalWithCode NP64
 105         FatalWithCode SS64
 106         FatalWithCode GP64
 107         SpringboardWithCode PF64 HandlePF
 108         /* vector 15 is not used */
 109         FatalNoCode   MF64
 110         FatalWithCode AC64
 111         FatalNoCode   MC64
 112         FatalNoCode   XF64
 113         /* 20-31 are reserved */
 114
 115         irqm PIT_IRQ PIT
 116         irqm KBD_IRQ KBD
 117         irqm RTC_IRQ RTC
 118         irqm MOUSE_IRQ MOUSE
 119
 120 Dump64: ret
 121
 122         .global Fatal64
 123 Fatal64:
 124         call    Dump64
 125 1:      hlt
 126         jmp     1b