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67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Arch/x86_64/DescriptorTable.h>
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#include <Kernel/Arch/x86_64/TrapFrame.h>
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// clang-format off
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asm(
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".globl interrupt_common_asm_entry\n"
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"interrupt_common_asm_entry: \n"
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// save all the other registers
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" pushq %r15\n"
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" pushq %r14\n"
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" pushq %r13\n"
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" pushq %r12\n"
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" pushq %r11\n"
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" pushq %r10\n"
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" pushq %r9\n"
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" pushq %r8\n"
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" pushq %rax\n"
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" pushq %rcx\n"
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" pushq %rdx\n"
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" pushq %rbx\n"
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" pushq %rsp\n"
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" pushq %rbp\n"
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" pushq %rsi\n"
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" pushq %rdi\n"
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" pushq %rsp \n" /* set TrapFrame::regs */
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" subq $" __STRINGIFY(TRAP_FRAME_SIZE - 8) ", %rsp \n"
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" movq %rsp, %rdi \n"
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" cld\n"
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" call enter_trap \n"
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" movq %rsp, %rdi \n"
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" call handle_interrupt \n"
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".globl common_trap_exit \n"
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"common_trap_exit: \n"
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// another thread may have handled this trap at this point, so don't
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// make assumptions about the stack other than there's a TrapFrame.
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" movq %rsp, %rdi \n"
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" call exit_trap \n"
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" addq $" __STRINGIFY(TRAP_FRAME_SIZE) ", %rsp\n" // pop TrapFrame
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".globl interrupt_common_asm_exit \n"
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"interrupt_common_asm_exit: \n"
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" popq %rdi\n"
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" popq %rsi\n"
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" popq %rbp\n"
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" addq $8, %rsp\n" // skip restoring rsp
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" popq %rbx\n"
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" popq %rdx\n"
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" popq %rcx\n"
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" popq %rax\n"
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" popq %r8\n"
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" popq %r9\n"
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" popq %r10\n"
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" popq %r11\n"
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" popq %r12\n"
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" popq %r13\n"
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" popq %r14\n"
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" popq %r15\n"
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" addq $0x8, %rsp\n" // skip exception_code, isr_number
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" iretq\n"
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);
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// clang-format on
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