113 lines
4.8 KiB
C
113 lines
4.8 KiB
C
#ifndef EXCEPTION_C
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#define EXCEPTION_C
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#include "terminal.c"
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typedef struct interrupt_frame_struct {
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uint32_t eip;
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uint32_t cs;
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uint32_t eflags;
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} interrupt_frame;
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#define EXCEPTION_HANDLER_NO_ERR(NAME, STR) \
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__attribute__((interrupt)) void NAME (interrupt_frame* frame) { \
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outb(0x20, 0x20); \
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bsod(frame, STR, -1); \
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}
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#define EXCEPTION_HANDLER_ERR(NAME, STR) \
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__attribute__((interrupt)) void NAME (interrupt_frame* frame, uint32_t err_code) { \
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outb(0x20, 0x20); \
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bsod(frame, STR, err_code); \
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}
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terminal_state state;
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void exception_set_terminal_state(terminal_state* s){
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terminal_state_copy(s,&state);
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}
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void bsod(interrupt_frame* frame, char* err_msg, int32_t err_code) {
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terminal_write_str(&state,"An exception occured: ");
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terminal_write_str(&state,err_msg);
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if(err_code != -1) {
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terminal_write_str(&state," (error code = 0x");
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terminal_write_int(&state,err_code, 16);
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terminal_write_str(&state,")");
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}
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terminal_write_str(&state,"\nHere's what we know:\n");
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terminal_write_str(&state,"eip = 0x");
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terminal_write_int(&state,frame->eip, 16);
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terminal_write_str(&state,"\ncs = 0x");
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terminal_write_int(&state,frame->cs, 16);
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terminal_write_str(&state,"\neflags = 0b");
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terminal_write_int(&state,frame->eflags, 2);
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terminal_write_str(&state,"\n(");
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terminal_write_str(&state,(0x0001 & frame->eflags) != 0 ? "NC,": "CY,");
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terminal_write_str(&state,(0x0004 & frame->eflags) != 0 ? "PE,": "PO,");
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terminal_write_str(&state,(0x0010 & frame->eflags) != 0 ? "AC,": "NA,");
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terminal_write_str(&state,(0x0040 & frame->eflags) != 0 ? "ZR,": "NZ,");
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terminal_write_str(&state,(0x0080 & frame->eflags) != 0 ? "NG,": "PL,");
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terminal_write_str(&state,"TF:");
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terminal_write_int(&state,(0x0100 & frame->eflags) >> 8, 2);
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terminal_write_char(&state,',');
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terminal_write_str(&state,(0x0200 & frame->eflags) != 0 ? "EI,": "DI,");
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terminal_write_str(&state,(0x0400 & frame->eflags) != 0 ? "DN,": "UP,");
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terminal_write_str(&state,(0x0800 & frame->eflags) != 0 ? "OV,": "NV,");
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terminal_write_str(&state,"IOPL:");
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terminal_write_int(&state,(0x3000 & frame->eflags) >> 12, 10);
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terminal_write_char(&state,',');
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terminal_write_str(&state,"NT:");
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terminal_write_int(&state,(0x4000 & frame->eflags) >> 14, 2);
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terminal_write_char(&state,',');
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terminal_write_str(&state,"RF:");
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terminal_write_int(&state,(0x0001000 & frame->eflags) >> 16, 2);
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terminal_write_char(&state,',');
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terminal_write_str(&state,"VM:");
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terminal_write_int(&state,(0x0002000 & frame->eflags) >> 17, 2);
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terminal_write_char(&state,',');
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terminal_write_str(&state,"AC:");
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terminal_write_int(&state,(0x0004000 & frame->eflags) >> 18, 2);
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terminal_write_char(&state,',');
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terminal_write_str(&state,"VIF:");
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terminal_write_int(&state,(0x0008000 & frame->eflags) >> 19, 2);
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terminal_write_char(&state,',');
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terminal_write_str(&state,"VIP:");
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terminal_write_int(&state,(0x0010000 & frame->eflags) >> 20, 2);
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terminal_write_char(&state,',');
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terminal_write_str(&state,"ID:");
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terminal_write_int(&state,(0x0020000 & frame->eflags) >> 21, 2);
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terminal_write_char(&state,')');
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for(;;) {
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asm("hlt");
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}
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}
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EXCEPTION_HANDLER_NO_ERR(divide_by_zero_handler, "Divide by zero")
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EXCEPTION_HANDLER_NO_ERR(debug_handler, "debug")
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EXCEPTION_HANDLER_NO_ERR(non_maskable_interrupt_handler, "Non maskable interrupt")
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EXCEPTION_HANDLER_NO_ERR(breakpoint_handler, "Breakpoint")
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EXCEPTION_HANDLER_NO_ERR(overflow_handler, "Overflow")
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EXCEPTION_HANDLER_NO_ERR(bound_range_exceeded_handler, "Bound range exceeded")
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EXCEPTION_HANDLER_NO_ERR(invalid_opcode_handler, "Invalid opcode")
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EXCEPTION_HANDLER_NO_ERR(device_not_available_handler, "Device not available")
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EXCEPTION_HANDLER_ERR(double_fault_handler, "Double fault")
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EXCEPTION_HANDLER_NO_ERR(coprocessor_seg_overrun_handler, "Coprocessor seg overrun")
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EXCEPTION_HANDLER_ERR(invalid_tss_handler, "Invalid tss")
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EXCEPTION_HANDLER_ERR(segment_not_present_handler, "Segment not present")
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EXCEPTION_HANDLER_ERR(stack_segment_fault_handler, "Stack segment fault")
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EXCEPTION_HANDLER_ERR(general_protection_fault_handler, "General protection fault")
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EXCEPTION_HANDLER_ERR(page_fault_handler, "Page fault")
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EXCEPTION_HANDLER_NO_ERR(reserved_handler, "Reserved")
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EXCEPTION_HANDLER_NO_ERR(x87_fp_exception_handler, "x87 floating point exception")
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EXCEPTION_HANDLER_NO_ERR(alignment_check_handler, "Alignment check");
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EXCEPTION_HANDLER_NO_ERR(machine_check_handler, "Machine check");
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EXCEPTION_HANDLER_NO_ERR(simd_fp_exception_handler, "SIMD floating point exception");
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EXCEPTION_HANDLER_NO_ERR(virtualization_exception_handler, "Virtualization exception");
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EXCEPTION_HANDLER_NO_ERR(security_exception_handler, "Security exception");
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#endif //EXCEPTION_C
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