diff cos/kernel/asmcode.asm @ 14:a58904747019

Added asm interrupt handler things, not yet working
author windel
date Mon, 14 Nov 2011 22:45:55 +0100
parents
children f3e3e0e9c4bc
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line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cos/kernel/asmcode.asm	Mon Nov 14 22:45:55 2011 +0100
@@ -0,0 +1,76 @@
+; The default interrupt handlers.
+; from 20 - 31 are reserved vectors.
+; below are the custom ones!
+
+section .text
+align 4
+
+; Port helpers:
+global outb
+outb:
+  mov eax, [esp + 8]
+  mov edx, [esp + 4]
+  out dx, al
+  ret
+
+global inb
+inb:
+  xor eax, eax
+  mov edx, [esp + 4]
+  in al, dx
+  ret
+
+; Helper functions:
+global enableinterrupts
+enableinterrupts:
+  sti
+  ret
+
+global halt
+halt:
+  cli
+  hlt
+
+global loadIDT
+loadIDT:
+  ret
+
+; Define macro with two arguments:
+%macro INTX 2
+global %1
+%1:
+ ; Do some saving:
+extern %2
+     call %2
+ ; Do restoration
+     iret
+
+%endmacro
+
+; Exception handlers:
+INTX INTDEF, INTDEF_handler
+INTX INT0, INT0handler
+INTX INT1, INT1handler
+INTX INT2, INT2handler
+INTX INT3, INT3handler
+INTX INT4, INT4handler
+INTX INT5, INT5handler
+INTX INT6, INT6handler
+INTX INT7, INT7handler
+INTX INT8, INT8handler
+INTX INT9, INT9handler
+INTX INT10, INT10handler
+INTX INT11, INT11handler
+INTX INT12, INT12handler
+INTX INT13, INT13handler
+INTX INT14, INT14handler
+INTX INT15, INT15handler
+INTX INT16, INT16handler
+INTX INT17, INT17handler
+INTX INT18, INT18handler
+INTX INT19, INT19handler
+
+INTX INT32, INT32handler
+INTX INT33, INT33handler
+INTX INT34, INT34handler
+