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Kernel: Add support for interrupts on x86_64

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This commit is contained in:
Gunnar Beutner 2021-06-26 14:57:13 +02:00 • committed by Andreas Kling
parent 233ef26e4d
commit 065c6c307d
4 changed files with 98 additions and 19 deletions
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40
Kernel/Arch/x86/x86_64/InterruptEntry.cpp
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@ -10,15 +10,35 @@
// clang-format off
asm(
".globl interrupt_common_asm_entry\n"
"interrupt_common_asm_entry: \n"
" int3 \n" // FIXME
".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"
" int3 \n" // FIXME
".globl interrupt_common_asm_entry\n"
"interrupt_common_asm_entry: \n"
" hlt \n" // FIXME
".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.
" movq %rsp, %rdi \n"
" call exit_trap \n"
" addq $" __STRINGIFY(TRAP_FRAME_SIZE) ", %rsp\n" // pop TrapFrame
".globl interrupt_common_asm_exit \n"
"interrupt_common_asm_exit: \n"
" popq %rdi\n"
" popq %rsi\n"
" popq %rbp\n"
" addq $8, %rsp\n" // skip restoring rsp
" popq %rbx\n"
" popq %rdx\n"
" popq %rcx\n"
" popq %rax\n"
" popq %r8\n"
" popq %r9\n"
" popq %r10\n"
" popq %r11\n"
" popq %r12\n"
" popq %r13\n"
" popq %r14\n"
" popq %r15\n"
" addq $0x8, %rsp\n" // skip exception_code, isr_number
" iretq\n"
);
// clang-format on