91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
#include <stdint.h>
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#include <tianole/arch.h>
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#include <tianole/early_log.h>
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#include "cpu.h"
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static const char *const exception_names[32] = {
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"divide error",
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"debug",
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"non-maskable interrupt",
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"breakpoint",
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"overflow",
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"bound range exceeded",
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"invalid opcode",
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"device not available",
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"double fault",
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"coprocessor segment overrun",
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"invalid tss",
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"segment not present",
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"stack segment fault",
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"general protection fault",
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"page fault",
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"reserved",
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"x87 floating-point exception",
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"alignment check",
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"machine check",
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"simd floating-point exception",
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"virtualization exception",
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"control protection exception",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"reserved",
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"hypervisor injection exception",
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"vmm communication exception",
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"security exception",
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"reserved",
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};
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static uint64_t interrupted_rsp(const struct trap_frame *frame)
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{
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return (uint64_t)(uintptr_t)&frame->rflags + sizeof(frame->rflags);
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}
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void arch_traps_init(void)
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{
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gdt_init();
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idt_init();
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early_log_puts("traps initialized\n");
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}
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void trap_dispatch(struct trap_frame *frame)
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{
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uint64_t vector = frame->vector;
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const char *name = "unknown exception";
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if (vector >= 32 && vector < 48) {
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handle_irq(frame);
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return;
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}
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if (vector < 32) {
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name = exception_names[vector];
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}
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early_log_puts("exception: ");
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early_log_puts(name);
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early_log_puts("\n");
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early_log_puts("vector=");
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early_log_u64_decimal(vector);
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early_log_puts(" error=");
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early_log_u64_hex(frame->error_code);
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early_log_puts("\n");
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early_log_puts("rip=");
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early_log_u64_hex(frame->rip);
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early_log_puts(" rsp=");
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early_log_u64_hex(interrupted_rsp(frame));
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early_log_puts(" rflags=");
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early_log_u64_hex(frame->rflags);
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early_log_puts("\n");
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if (vector == 14) {
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handle_page_fault(frame);
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}
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panic("unhandled CPU exception");
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}
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