Getting ready to add a TSS.
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@ -86,6 +86,15 @@ gdt_udata:
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.byte 0b11001111 # 2nd flags | limit
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.byte 0x0 # base
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# TODO: setup the TSS
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gdt_tss:
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.word 0x0 # size of TSS (set later)
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.word 0x0 # address of TSS (set later)
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.byte 0x0 # address of TSS (set later)
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.byte 0b10010001 # 1st flags | type flags
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.byte 0b01000000 # 2nd flags | size of TSS (set later
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.byte 0x0 # address of TSS (set later)
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gdt_end:
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gdtr:
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67
src/kernel/arch/x86/tss.h
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67
src/kernel/arch/x86/tss.h
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@ -0,0 +1,67 @@
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/*
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* Copyright (C) 2018 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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* Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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volatile struct tss {
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uint16_t link;
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uint16_t link_r; // reserved
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uint32_t esp0;
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uint16_t ss0;
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uint16_t ss0_r; // reserved
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uint32_t esp1;
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uint16_t ss1;
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uint16_t ss1_r; // reserved
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uint32_t esp2;
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uint16_t ss2;
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uint16_t ss2_r; // reserved
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uint32_t cr3;
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uint32_t eip;
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uint32_t eflags;
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uint32_t eax;
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uint32_t ecx;
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uint32_t edx;
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uint32_t ebx;
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uint32_t esp;
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uint32_t ebp;
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uint32_t esi;
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uint32_t edi;
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uint16_t es;
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uint16_t es_r; // reserved
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uint16_t cs;
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uint16_t cs_r; // reserved
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uint16_t ss;
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uint16_t ss_r; // reserved
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uint16_t ds;
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uint16_t ds_r; // reserved
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uint16_t fs;
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uint16_t fs_r; // reserved
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uint16_t gs;
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uint16_t gs_r; // reserved
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uint16_t ldtr;
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uint16_t ldtr_r; // reserved
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uint16_t iopb_r; // reserved
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uint16_t iopb;
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} __attribute__((packed));
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struct tss tss;
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