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authorIan Moffett <ian@osmora.org>2024-06-24 22:55:29 -0400
committerIan Moffett <ian@osmora.org>2024-06-24 22:55:29 -0400
commit236963e7563be3e3f8220dac7bb4af446928e194 (patch)
treee521ea226db0345bbb3679fffe09d96254b7dc73 /sys/include/arch/amd64/gdt.h
parent214eadc62b5578f76c98a38a28f8b3d80ac4d6ad (diff)
Clean out for expt
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include/arch/amd64/gdt.h')
-rw-r--r--sys/include/arch/amd64/gdt.h79
1 files changed, 0 insertions, 79 deletions
diff --git a/sys/include/arch/amd64/gdt.h b/sys/include/arch/amd64/gdt.h
deleted file mode 100644
index c3ea8e8..0000000
--- a/sys/include/arch/amd64/gdt.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (c) 2023-2024 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.
- */
-
-#ifndef AMD64_GDT_H_
-#define AMD64_GDT_H_
-
-#include <sys/types.h>
-#include <sys/cdefs.h>
-
-#define GDT_TSS 5
-#define KERNEL_CS 0x8
-#define KERNEL_DS 0x10
-
-struct __packed gdt_entry {
- uint16_t limit;
- uint16_t base_low;
- uint8_t base_mid;
- uint8_t access;
- uint8_t granularity;
- uint8_t base_hi;
-};
-
-struct __packed gdtr {
- uint16_t limit;
- uintptr_t offset;
-};
-
-static inline void
-gdt_load(struct gdtr *gdtr)
-{
- __asm("lgdt %0\n"
- "push $8\n" /* Push CS */
- "lea 1f(%%rip), %%rax\n" /* Load 1 label address into RAX */
- "push %%rax\n" /* Push the return address (label 1) */
- "lretq\n" /* Far return to update CS */
- "1:\n"
- " mov $0x10, %%eax\n"
- " mov %%eax, %%ds\n"
- " mov %%eax, %%es\n"
- " mov %%eax, %%fs\n"
- " mov %%eax, %%gs\n"
- " mov %%eax, %%ss\n"
- :
- : "m" (*gdtr)
- : "rax", "memory"
- );
-}
-
-extern struct gdt_entry g_gdt[256];
-extern struct gdt_entry *g_gdt_tss;
-extern struct gdtr g_gdtr;
-
-#endif /* !AMD64_GDT_H_ */