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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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.
*
* 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 HOLDER 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.
*/
#pragma once
#include <AK/Assertions.h>
#include <AK/Types.h>
#include <Kernel/Arch/i386/CPU.h>
extern "C" void interrupt_common_asm_entry();
#if ARCH(I386)
# define GENERATE_GENERIC_INTERRUPT_HANDLER_ASM_ENTRY(isr_number) \
extern "C" void interrupt_##isr_number##_asm_entry(); \
asm(".globl interrupt_" #isr_number "_asm_entry\n" \
"interrupt_" #isr_number "_asm_entry:\n" \
" pushw $" #isr_number "\n" \
" pushw $0\n" \
" jmp interrupt_common_asm_entry\n");
// clang-format off
asm(
".globl interrupt_common_asm_entry\n"
"interrupt_common_asm_entry: \n"
" pusha\n"
" pushl %ds\n"
" pushl %es\n"
" pushl %fs\n"
" pushl %gs\n"
" pushl %ss\n"
" mov $" __STRINGIFY(GDT_SELECTOR_DATA0) ", %ax\n"
" mov %ax, %ds\n"
" mov %ax, %es\n"
" mov $" __STRINGIFY(GDT_SELECTOR_PROC) ", %ax\n"
" mov %ax, %fs\n"
" pushl %esp \n" // set TrapFrame::regs
" subl $" __STRINGIFY(TRAP_FRAME_SIZE - 4) ", %esp \n"
" movl %esp, %ebx \n" // save pointer to TrapFrame
" pushl %ebx \n"
" cld\n"
" call enter_trap \n"
" movl %ebx, 0(%esp) \n" // push pointer to TrapFrame
" call handle_interrupt\n"
" movl %ebx, 0(%esp) \n" // push pointer to TrapFrame
".globl common_trap_exit \n"
"common_trap_exit: \n"
// another thread may have handled this trap at this point, so don't
// make assumptions about the stack other than there's a TrapFrame
// and a pointer to it.
" call exit_trap \n"
" addl $" __STRINGIFY(TRAP_FRAME_SIZE + 4) ", %esp\n" // pop TrapFrame and pointer to it
".globl interrupt_common_asm_exit \n"
"interrupt_common_asm_exit: \n"
" addl $4, %esp\n" // pop %ss
" popl %gs\n"
" popl %fs\n"
" popl %es\n"
" popl %ds\n"
" popa\n"
" addl $0x4, %esp\n" // skip exception_code, isr_number
" iret\n"
);
// clang-format on
#elif ARCH(X86_64)
# define GENERATE_GENERIC_INTERRUPT_HANDLER_ASM_ENTRY(isr_number) \
extern "C" void interrupt_##isr_number##_asm_entry(); \
asm(".globl interrupt_" #isr_number "_asm_entry\n" \
"interrupt_" #isr_number "_asm_entry:\n" \
" cli\n" \
" hlt\n");
asm(
".globl common_trap_exit\n"
"common_trap_exit:\n"
" cli;hlt\n");
#endif
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