kernel/amd64: Re-organize AMD64 files

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 0 insertions, 158 deletions

diff --git a/sys/arch/amd64/tss.c b/sys/arch/amd64/tss.c
deleted file mode 100644
index b1b5420..0000000
--- a/sys/arch/amd64/tss.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- * Copyright (c) 2023 Ian Marco Moffett and the Osmora Team.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Hyra nor the names of its
- *    contributors may be used to endorse or promote products derived from
- *    this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/tss.h>
-#include <machine/cpu.h>
-#include <lib/string.h>
-#include <vm/dynalloc.h>
-#include <sys/panic.h>
-#include <sys/errno.h>
-#include <assert.h>
-
-__MODULE_NAME("TSS");
-__KERNEL_META("$Hyra$: tss.c, Ian Marco Moffett, "
-              "AMD64 Task state segment code");
-
-static void
-alloc_resources(struct cpu_info *cpu)
-{
-    struct tss_entry *tss;
-
-    /*
-     * Allocate TSS entries for this CPU
-     */
-    if (cpu->tss == NULL) {
-        /* Allocate a TSS for this CPU */
-        tss = dynalloc(sizeof(*tss));
-        if (tss == NULL)
-            panic("Failed to alloc %d bytes for TSS\n", sizeof(*tss));
-        memset(tss, 0, sizeof(*tss));
-        cpu->tss = tss;
-    }
-}
-
-/*
- * Update interrupt stack table entry `istno' with `stack'
- *
- * @stack: Interrupt stack.
- * @istno: IST number, must be 1-based.
- *
- * Returns 0 on success.
- */
-int
-tss_update_ist(struct cpu_info *ci, union tss_stack stack, uint8_t istno)
-{
-    volatile struct tss_entry *tss = ci->tss;
-
-    __assert(tss != NULL);
-
-    switch (istno) {
-    case 1:
-        tss->ist1_lo = stack.top_lo;
-        tss->ist1_hi = stack.top_hi;
-        break;
-    case 2:
-        tss->ist2_lo = stack.top_lo;
-        tss->ist2_hi = stack.top_hi;
-        break;
-    case 3:
-        tss->ist3_lo = stack.top_lo;
-        tss->ist3_hi = stack.top_hi;
-        break;
-    case 4:
-        tss->ist4_lo = stack.top_lo;
-        tss->ist4_hi = stack.top_hi;
-        break;
-    case 5:
-        tss->ist5_lo = stack.top_lo;
-        tss->ist5_hi = stack.top_hi;
-        break;
-    case 6:
-        tss->ist6_lo = stack.top_lo;
-        tss->ist6_hi = stack.top_hi;
-        break;
-    case 7:
-        tss->ist7_lo = stack.top_lo;
-        tss->ist7_hi = stack.top_hi;
-        break;
-    default:
-        return -EXIT_FAILURE;
-    };
-
-    return 0;
-}
-
-/*
- * Allocates TSS stack.
- *
- * Returns 0 on success.
- *
- * @entry_out: Pointer to location where allocated entry
- *             will be sent.
- */
-int
-tss_alloc_stack(union tss_stack *entry_out, size_t size)
-{
-    uintptr_t base = (uintptr_t)dynalloc(size);
-
-    if (base == 0) {
-        return -EXIT_FAILURE;
-    }
-
-    entry_out->top = base + size;
-    return 0;
-}
-
-void
-write_tss(struct cpu_info *cpu, struct tss_desc *desc)
-{
-    uintptr_t tss_base;
-
-    alloc_resources(cpu);
-
-    tss_base = (uintptr_t)cpu->tss;
-
-    /*
-     * XXX: The AVL (Available for use by system software)
-     *      bit is ignored by hardware and it is up to us
-     *      to decide how to use it... As of now, it is useless
-     *      to us and shall remain 0.
-     */
-    desc->seglimit = sizeof(struct tss_entry);
-    desc->p = 1;        /* Must be present to be valid! */
-    desc->g = 0;        /* Granularity -> 0 */
-    desc->avl = 0;      /* Not used */
-    desc->dpl = 0;      /* Descriptor Privilege Level -> 0 */
-    desc->type = 0x9;   /* For TSS -> 0x9 (0b1001) */
-
-    desc->base_lo16 =       __SHIFTOUT(tss_base, __MASK(16));
-    desc->base_mid8 =       __SHIFTOUT(tss_base, __MASK(8) << 16);
-    desc->base_hi_mid8 =    __SHIFTOUT(tss_base, __MASK(8) << 24);
-    desc->base_hi32 =       __SHIFTOUT(tss_base, __MASK(32) << 32);
-}