Mark
c2db4e94a6
1. %rip -> %rsp (misspelt a register name, damn) 2. Rename swapgs_if_needed to iret_swapgs_if_needed for clarification 3. Add iret_swapgs_if_needed before iret from exception handler
79 lines
1.4 KiB
C
79 lines
1.4 KiB
C
#pragma once
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#include "arch/amd64/asm/asm_apic.h"
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#define AMD64_STACK_CTX_CANARY 0xBAD57AC6BAD57AC6
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// TODO: use base + off instead of an absolute address
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#if defined(__ASM__)
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#include "arch/amd64/asm/asm_cpu.h"
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.extern local_apic
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.extern irq_handle
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.macro irq_entry, n
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.global amd64_irq\n
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amd64_irq\n:
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cli
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iret_swapgs_if_needed
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pushq %r11
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pushq %r10
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pushq %r9
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pushq %r8
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pushq %rcx
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pushq %rdx
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pushq %rsi
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pushq %rdi
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pushq %rax
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irq_eoi_lapic 0
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movq $\n, %rdi
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call irq_handle
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popq %rax
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popq %rdi
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popq %rsi
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popq %rdx
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popq %rcx
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popq %r8
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popq %r9
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popq %r10
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popq %r11
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iret_swapgs_if_needed
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iretq
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.endm
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.macro irq_eoi_lapic, n
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// n is actually ignored for APIC
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movq local_apic(%rip), %rax
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addq $LAPIC_REG_EOI, %rax
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movl $0, (%rax)
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.endm
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#else
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// Externs for C code
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extern void amd64_irq0_early();
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extern void amd64_irq0();
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extern void amd64_irq1();
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extern void amd64_irq2();
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extern void amd64_irq3();
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extern void amd64_irq4();
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extern void amd64_irq5();
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extern void amd64_irq6();
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extern void amd64_irq7();
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extern void amd64_irq8();
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extern void amd64_irq9();
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extern void amd64_irq10();
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extern void amd64_irq11();
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extern void amd64_irq12();
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extern void amd64_irq13();
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extern void amd64_irq14();
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extern void amd64_irq15();
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#if defined(AMD64_MAX_SMP)
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extern void amd64_irq_ipi();
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extern void amd64_irq_ipi_panic();
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#endif
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extern void amd64_irq_msi0();
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#endif
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