ngiddings
5efc389935
PCB is local to a process's address space. Context switches are written in assembly. Moved x86 headers to include/x86
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
#include "kernel.h"
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#include "x86/isr.h"
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#include "stdio.h"
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#include "x86/apic.h"
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#include "x86/processstate.h"
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#include "context.h"
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struct interrupt_frame_t
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{
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size_t eip;
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size_t cs;
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size_t eflags;
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size_t esp;
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size_t ss;
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};
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void isr_generic(struct interrupt_frame_t *frame)
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{
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printf("Generic interrupt.\n");
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}
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void isr_division_by_zero(struct interrupt_frame_t *frame)
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{
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printf("Exception: Division by zero\n");
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}
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void isr_gp_fault(struct interrupt_frame_t *frame, unsigned int error)
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{
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asm("cli");
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asm("mov $0x10, %%ax; "
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"mov %%ax, %%ds; "
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"mov %%ax, %%es; "
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"mov %%ax, %%fs; "
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"mov %%ax, %%gs; " ::
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: "ax");
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printf("Exception: GP fault, code %08x\n", error);
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asm("hlt");
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}
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void isr_page_fault(struct interrupt_frame_t *frame, unsigned int error)
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{
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size_t addr;
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asm("mov %%cr2, %0"
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: "=r"(addr));
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asm("mov $0x10, %%ax; "
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"mov %%ax, %%ds; "
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"mov %%ax, %%es; "
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"mov %%ax, %%fs; "
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"mov %%ax, %%gs; " ::
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: "ax");
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printf("Exception: Page fault, code %08x, linear address %08x\n", error, addr);
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asm("hlt");
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}
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void isr_double_fault(struct interrupt_frame_t *frame, unsigned int error)
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{
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asm("cli");
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printf("Exception: Double fault (!!), code %08x\n", error);
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asm("hlt");
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}
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void isr_timer(struct interrupt_frame_t *frame)
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{
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printf("Timer tick.\n");
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apic_eoi();
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}
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void isr_syscall(struct interrupt_frame_t *frame)
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{
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} |