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Kernel: Implement entry code for x86_64 interrupts
With this fixed we can now properly handle interrupts (e.g. timer interrupts) on x86_64.
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parent
328d44e227
commit
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2 changed files with 31 additions and 3 deletions
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@ -47,11 +47,11 @@ struct [[gnu::packed]] RegisterState {
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FlatPtr r14;
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FlatPtr r15;
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#endif
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u16 exception_code;
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u16 isr_number;
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#if ARCH(X86_64)
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u32 padding;
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#endif
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u16 exception_code;
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u16 isr_number;
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#if ARCH(I386)
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FlatPtr eip;
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#else
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@ -12,7 +12,35 @@
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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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" hlt \n" // FIXME
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// add the padding field in RegisterState
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" subq $4, %rsp\n"
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" movl $0, 0(%rsp)\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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" subq $0x8, %rsp\n" /* align stack */
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" lea 0x8(%rsp), %rdi \n"
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" cld\n"
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" call enter_trap \n"
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" lea 0x8(%rsp), %rdi \n"
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" call handle_interrupt \n"
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" addq $0x8, %rsp\n" /* undo alignment */
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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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