diff options
Diffstat (limited to 'src/kernel/interrupts/isr.c')
| -rw-r--r-- | src/kernel/interrupts/isr.c | 207 |
1 files changed, 102 insertions, 105 deletions
diff --git a/src/kernel/interrupts/isr.c b/src/kernel/interrupts/isr.c index 42dbaa6..61d0fcc 100644 --- a/src/kernel/interrupts/isr.c +++ b/src/kernel/interrupts/isr.c @@ -8,127 +8,124 @@ // Install ISRs in IDT void isrs_install() { - idt_set_gate(0, (unsigned) isr0, 0x08, 0x8E); - idt_set_gate(1, (unsigned) isr1, 0x08, 0x8E); - idt_set_gate(2, (unsigned) isr2, 0x08, 0x8E); - idt_set_gate(3, (unsigned) isr3, 0x08, 0x8E); - idt_set_gate(4, (unsigned) isr4, 0x08, 0x8E); - idt_set_gate(5, (unsigned) isr5, 0x08, 0x8E); - idt_set_gate(6, (unsigned) isr6, 0x08, 0x8E); - idt_set_gate(7, (unsigned) isr7, 0x08, 0x8E); - - idt_set_gate(8, (unsigned) isr8, 0x08, 0x8E); - idt_set_gate(9, (unsigned) isr9, 0x08, 0x8E); - idt_set_gate(10, (unsigned) isr10, 0x08, 0x8E); - idt_set_gate(11, (unsigned) isr11, 0x08, 0x8E); - idt_set_gate(12, (unsigned) isr12, 0x08, 0x8E); - idt_set_gate(13, (unsigned) isr13, 0x08, 0x8E); - idt_set_gate(14, (unsigned) isr14, 0x08, 0x8E); - idt_set_gate(15, (unsigned) isr15, 0x08, 0x8E); - - idt_set_gate(16, (unsigned) isr16, 0x08, 0x8E); - idt_set_gate(17, (unsigned) isr17, 0x08, 0x8E); - idt_set_gate(18, (unsigned) isr18, 0x08, 0x8E); - idt_set_gate(19, (unsigned) isr19, 0x08, 0x8E); - idt_set_gate(20, (unsigned) isr20, 0x08, 0x8E); - idt_set_gate(21, (unsigned) isr21, 0x08, 0x8E); - idt_set_gate(22, (unsigned) isr22, 0x08, 0x8E); - idt_set_gate(23, (unsigned) isr23, 0x08, 0x8E); - - idt_set_gate(24, (unsigned) isr24, 0x08, 0x8E); - idt_set_gate(25, (unsigned) isr25, 0x08, 0x8E); - idt_set_gate(26, (unsigned) isr26, 0x08, 0x8E); - idt_set_gate(27, (unsigned) isr27, 0x08, 0x8E); - idt_set_gate(28, (unsigned) isr28, 0x08, 0x8E); - idt_set_gate(29, (unsigned) isr29, 0x08, 0x8E); - idt_set_gate(30, (unsigned) isr30, 0x08, 0x8E); - idt_set_gate(31, (unsigned) isr31, 0x08, 0x8E); - - idt_set_gate(0x80, (unsigned) isr128, 0x08, 0xEE); - - vga_log("Installed Interrupt Service Routines"); + idt_set_gate(0, (unsigned)isr0, 0x08, 0x8E); + idt_set_gate(1, (unsigned)isr1, 0x08, 0x8E); + idt_set_gate(2, (unsigned)isr2, 0x08, 0x8E); + idt_set_gate(3, (unsigned)isr3, 0x08, 0x8E); + idt_set_gate(4, (unsigned)isr4, 0x08, 0x8E); + idt_set_gate(5, (unsigned)isr5, 0x08, 0x8E); + idt_set_gate(6, (unsigned)isr6, 0x08, 0x8E); + idt_set_gate(7, (unsigned)isr7, 0x08, 0x8E); + + idt_set_gate(8, (unsigned)isr8, 0x08, 0x8E); + idt_set_gate(9, (unsigned)isr9, 0x08, 0x8E); + idt_set_gate(10, (unsigned)isr10, 0x08, 0x8E); + idt_set_gate(11, (unsigned)isr11, 0x08, 0x8E); + idt_set_gate(12, (unsigned)isr12, 0x08, 0x8E); + idt_set_gate(13, (unsigned)isr13, 0x08, 0x8E); + idt_set_gate(14, (unsigned)isr14, 0x08, 0x8E); + idt_set_gate(15, (unsigned)isr15, 0x08, 0x8E); + + idt_set_gate(16, (unsigned)isr16, 0x08, 0x8E); + idt_set_gate(17, (unsigned)isr17, 0x08, 0x8E); + idt_set_gate(18, (unsigned)isr18, 0x08, 0x8E); + idt_set_gate(19, (unsigned)isr19, 0x08, 0x8E); + idt_set_gate(20, (unsigned)isr20, 0x08, 0x8E); + idt_set_gate(21, (unsigned)isr21, 0x08, 0x8E); + idt_set_gate(22, (unsigned)isr22, 0x08, 0x8E); + idt_set_gate(23, (unsigned)isr23, 0x08, 0x8E); + + idt_set_gate(24, (unsigned)isr24, 0x08, 0x8E); + idt_set_gate(25, (unsigned)isr25, 0x08, 0x8E); + idt_set_gate(26, (unsigned)isr26, 0x08, 0x8E); + idt_set_gate(27, (unsigned)isr27, 0x08, 0x8E); + idt_set_gate(28, (unsigned)isr28, 0x08, 0x8E); + idt_set_gate(29, (unsigned)isr29, 0x08, 0x8E); + idt_set_gate(30, (unsigned)isr30, 0x08, 0x8E); + idt_set_gate(31, (unsigned)isr31, 0x08, 0x8E); + + idt_set_gate(0x80, (unsigned)isr128, 0x08, 0xEE); + + vga_log("Installed Interrupt Service Routines"); } -irq_handler_t isr_routines[256] = {0}; +irq_handler_t isr_routines[256] = { 0 }; // Install custom IRQ handler void isr_install_handler(size_t isr, irq_handler_t handler) { - isr_routines[isr] = handler; + isr_routines[isr] = handler; } // Removes the custom IRQ handler void isr_uninstall_handler(size_t isr) { - isr_routines[isr] = 0; + isr_routines[isr] = 0; } // Error exception messages -const char *exception_messages[32] = { - "Division By Zero", - "Debug", - "Non Maskable Interrupt", - "Breakpoint", - "Into Detected Overflow", - "Out of Bounds", - "Invalid Opcode", - "No Coprocessor", - - "Double Fault", - "Coprocessor Segment Overrun", - "Bad TSS", - "Segment Not Present", - "Stack Fault", - "General Protection Fault", - "Page Fault", - "Unknown Interrupt", - - "Coprocessor Fault", - "Alignment Check", - "Machine Check", - "Reserved", - "Reserved", - "Reserved", - "Reserved", - "Reserved", - - "Reserved", - "Reserved", - "Reserved", - "Reserved", - "Reserved", - "Reserved", - "Reserved", - "Reserved" -}; +const char *exception_messages[32] = { "Division By Zero", + "Debug", + "Non Maskable Interrupt", + "Breakpoint", + "Into Detected Overflow", + "Out of Bounds", + "Invalid Opcode", + "No Coprocessor", + + "Double Fault", + "Coprocessor Segment Overrun", + "Bad TSS", + "Segment Not Present", + "Stack Fault", + "General Protection Fault", + "Page Fault", + "Unknown Interrupt", + + "Coprocessor Fault", + "Alignment Check", + "Machine Check", + "Reserved", + "Reserved", + "Reserved", + "Reserved", + "Reserved", + + "Reserved", + "Reserved", + "Reserved", + "Reserved", + "Reserved", + "Reserved", + "Reserved", + "Reserved" }; // Master exception/interrupt/fault handler - halt via panic void fault_handler(struct regs *r) { - irq_handler_t handler = isr_routines[r->int_no]; - if (handler) { - handler(r); - } else { - uint32_t faulting_address; - asm ("mov %%cr2, %0" : "=r" (faulting_address)); - - serial_printf( - "\n[DEBUG]\nEIP: 0x%x\nEAX: 0x%x\nEBX: 0x%x\nECX: 0x%x\nEDX: 0x%x\nESP: 0x%x\nFault addr: 0x%x\nErr flag: 0x%x\nErr code: 0x%x\nINT code: 0x%x\nINT msg: %s", - r->eip, r->eax, r->ebx, r->ecx, r->edx, r->esp, faulting_address, r->eflags, r->err_code, r->int_no, - exception_messages[r->int_no] - ); - - if (r->int_no <= 32) { - char *message = (char *) exception_messages[r->int_no]; - strcat(message, " Exception"); - - // Show message if there wasn't an error in video memory - if (faulting_address != (uint32_t) fb) - panic(message); - else - halt_loop(); - } else { - panic("Unknown Exception"); - } - } + irq_handler_t handler = isr_routines[r->int_no]; + if (handler) { + handler(r); + } else { + uint32_t faulting_address; + asm("mov %%cr2, %0" : "=r"(faulting_address)); + + serial_printf( + "\n[DEBUG]\nEIP: 0x%x\nEAX: 0x%x\nEBX: 0x%x\nECX: 0x%x\nEDX: 0x%x\nESP: 0x%x\nFault addr: 0x%x\nErr flag: 0x%x\nErr code: 0x%x\nINT code: 0x%x\nINT msg: %s", + r->eip, r->eax, r->ebx, r->ecx, r->edx, r->esp, faulting_address, r->eflags, + r->err_code, r->int_no, exception_messages[r->int_no]); + + if (r->int_no <= 32) { + char *message = (char *)exception_messages[r->int_no]; + strcat(message, " Exception"); + + // Show message if there wasn't an error in video memory + if (faulting_address != (uint32_t)fb) + panic(message); + else + halt_loop(); + } else { + panic("Unknown Exception"); + } + } }
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