X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fgeekos%2Ftss.c;fp=palacios%2Fsrc%2Fgeekos%2Ftss.c;h=0000000000000000000000000000000000000000;hp=a94bc52899056ad1aba71aedef3a766c3524bdf2;hb=ddc16b0737cf58f7aa90a69c6652cdf4090aec51;hpb=626595465a2c6987606a6bc697df65130ad8c2d3

diff --git a/palacios/src/geekos/tss.c b/palacios/src/geekos/tss.c
deleted file mode 100644
index a94bc52..0000000
--- a/palacios/src/geekos/tss.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * x86 TSS data structure and routines
- * Copyright (c) 2001,2004 David H. Hovemeyer <daveho@cs.umd.edu>
- * $Revision: 1.1 $
- * 
- * This is free software.  You are permitted to use,
- * redistribute, and modify it as specified in the file "COPYING".
- */
-
-/*
- * Source: _Protected Mode Software Architecture_ by Tom Shanley,
- * ISBN 020155447X.
- */
-
-#include <geekos/kassert.h>
-#include <geekos/defs.h>
-#include <geekos/gdt.h>
-#include <geekos/segment.h>
-#include <geekos/string.h>
-#include <geekos/tss.h>
-
-#include <geekos/serial.h>
-
-/*
- * We use one TSS in GeekOS.
- */
-//static struct TSS s_theTSS;
-static struct TSS *s_theTSS = (struct TSS *) TSS_LOCATION;
-static struct Segment_Descriptor *s_tssDesc;
-static ushort_t s_tssSelector;
-
-static void __inline__ Load_Task_Register(void)
-{
-    /* Critical: TSS must be marked as not busy */
-    s_tssDesc->type = 0x09;
-
-    /* Load the task register */
-    __asm__ __volatile__ (
-	"ltr %0"
-	:
-	: "a" (s_tssSelector)
-    );
-}
-
-/*
- * Initialize the kernel TSS.  This must be done after the memory and
- * GDT initialization, but before the scheduler is started.
- */
-void Init_TSS(void)
-{
-  PrintBoth("Initializing TSS\n");
-
-    s_tssDesc = Allocate_Segment_Descriptor();
-    KASSERT(s_tssDesc != 0);
-
-    memset(s_theTSS, '\0', sizeof(struct TSS));
-    Init_TSS_Descriptor(s_tssDesc, s_theTSS);
-
-    s_tssSelector = Selector(0, true, Get_Descriptor_Index(s_tssDesc));
-
-    Load_Task_Register();
-}
-
-/*
- * Set kernel stack pointer.
- * This should be called before switching to a new
- * user process, so that interrupts occurring while executing
- * in user mode will be delivered on the correct stack.
- */
-void Set_Kernel_Stack_Pointer(ulong_t esp0)
-{
-    s_theTSS->ss0 = KERNEL_DS;
-    s_theTSS->esp0 = esp0;
-
-    /*
-     * NOTE: I read on alt.os.development that it is necessary to
-     * reload the task register after modifying a TSS.
-     * I haven't verified this in the IA32 documentation,
-     * but there is certainly no harm in being paranoid.
-     */
-    Load_Task_Register();
-}