Add a cool register dump thing to the breakpoint exception handler
Ry
parent
3c9e2cf32c
commit
7a3c1509a2
537
exception.asm
537
exception.asm
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@ -23,13 +23,548 @@ system_page_fault_handler:
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system_page_fault_str: data.str "Page fault at virtual address r1" data.8 10 data.8 0
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; called upon execution of a `brk` instruction
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; ensure the stack has at least 256 bytes of free space before triggering this exception!!
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; this code is extremely ugly, but it works :P
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system_breakpoint_handler:
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add rsp, 4
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; push all registers once to save them
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push r31
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push r30
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push r29
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push r28
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push r27
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push r26
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push r25
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push r24
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push r23
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push r22
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push r21
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push r20
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push r19
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push r18
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push r17
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push r16
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push r15
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push r14
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push r13
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push r12
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push r11
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push r10
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push r9
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push r8
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push r7
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push r6
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push r5
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push r4
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push r3
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push r2
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push r1
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push r0
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; then push all registers again so they can be popped one by one to print to the monitor
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push r31
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push r30
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push r29
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push r28
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push r27
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push r26
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push r25
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push r24
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push r23
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push r22
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push r21
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push r20
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push r19
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push r18
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push r17
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push r16
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push r15
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push r14
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push r13
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push r12
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push r11
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push r10
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push r9
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push r8
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push r7
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push r6
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push r5
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push r4
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push r3
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push r2
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push r1
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push r0
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mov r0, system_breakpoint_str
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call debug_print
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call print_string_to_monitor
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; r0
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mov r0, system_breakpoint_r0_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r1
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mov r0, system_breakpoint_r1_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r2
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mov r0, system_breakpoint_r2_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r3
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mov r0, system_breakpoint_r3_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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; r4
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mov r0, system_breakpoint_r4_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r5
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mov r0, system_breakpoint_r5_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r6
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mov r0, system_breakpoint_r6_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r7
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mov r0, system_breakpoint_r7_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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; r8
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mov r0, system_breakpoint_r8_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r9
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mov r0, system_breakpoint_r9_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r10
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mov r0, system_breakpoint_r10_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r11
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mov r0, system_breakpoint_r11_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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; r12
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mov r0, system_breakpoint_r12_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r13
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mov r0, system_breakpoint_r13_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r14
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mov r0, system_breakpoint_r14_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r15
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mov r0, system_breakpoint_r15_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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; r16
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mov r0, system_breakpoint_r16_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r17
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mov r0, system_breakpoint_r17_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r18
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mov r0, system_breakpoint_r18_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r19
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mov r0, system_breakpoint_r19_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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; r20
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mov r0, system_breakpoint_r20_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r21
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mov r0, system_breakpoint_r21_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r22
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mov r0, system_breakpoint_r22_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r23
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mov r0, system_breakpoint_r23_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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; r24
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mov r0, system_breakpoint_r24_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r25
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mov r0, system_breakpoint_r25_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r26
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mov r0, system_breakpoint_r26_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r27
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mov r0, system_breakpoint_r27_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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; r28
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mov r0, system_breakpoint_r28_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r29
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mov r0, system_breakpoint_r29_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r30
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mov r0, system_breakpoint_r30_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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mov r0, '|'
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call print_character_to_monitor
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mov r0, ' '
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call print_character_to_monitor
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; r31
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mov r0, system_breakpoint_r31_str
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call print_string_to_monitor
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pop r0
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call print_hex_word_to_monitor
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; ---
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mov r0, 10
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call print_character_to_monitor
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; ---
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call invoke_monitor
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pop r0
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pop r1
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pop r2
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pop r3
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pop r4
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pop r5
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pop r6
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pop r7
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pop r8
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pop r9
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pop r10
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pop r11
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pop r12
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pop r13
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pop r14
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pop r15
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pop r16
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pop r17
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pop r18
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pop r19
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pop r20
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pop r21
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pop r22
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pop r23
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pop r24
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pop r25
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pop r26
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pop r27
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pop r28
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pop r29
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pop r30
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pop r31
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reti
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system_breakpoint_str: data.str "Breakpoint reached!" data.8 10 data.8 0
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system_breakpoint_str: data.str "Breakpoint reached!" data.8 10 data.8 0
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system_breakpoint_r0_str: data.str "r0: " data.8 0
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system_breakpoint_r1_str: data.str "r1: " data.8 0
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system_breakpoint_r2_str: data.str "r2: " data.8 0
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system_breakpoint_r3_str: data.str "r3: " data.8 0
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system_breakpoint_r4_str: data.str "r4: " data.8 0
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system_breakpoint_r5_str: data.str "r5: " data.8 0
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system_breakpoint_r6_str: data.str "r6: " data.8 0
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system_breakpoint_r7_str: data.str "r7: " data.8 0
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system_breakpoint_r8_str: data.str "r8: " data.8 0
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system_breakpoint_r9_str: data.str "r9: " data.8 0
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system_breakpoint_r10_str: data.str "r10: " data.8 0
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system_breakpoint_r11_str: data.str "r11: " data.8 0
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system_breakpoint_r12_str: data.str "r12: " data.8 0
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system_breakpoint_r13_str: data.str "r13: " data.8 0
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system_breakpoint_r14_str: data.str "r14: " data.8 0
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system_breakpoint_r15_str: data.str "r15: " data.8 0
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system_breakpoint_r16_str: data.str "r16: " data.8 0
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system_breakpoint_r17_str: data.str "r17: " data.8 0
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system_breakpoint_r18_str: data.str "r18: " data.8 0
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system_breakpoint_r19_str: data.str "r19: " data.8 0
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system_breakpoint_r20_str: data.str "r20: " data.8 0
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system_breakpoint_r21_str: data.str "r21: " data.8 0
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system_breakpoint_r22_str: data.str "r22: " data.8 0
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system_breakpoint_r23_str: data.str "r23: " data.8 0
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system_breakpoint_r24_str: data.str "r24: " data.8 0
|
||||
system_breakpoint_r25_str: data.str "r25: " data.8 0
|
||||
system_breakpoint_r26_str: data.str "r26: " data.8 0
|
||||
system_breakpoint_r27_str: data.str "r27: " data.8 0
|
||||
system_breakpoint_r28_str: data.str "r28: " data.8 0
|
||||
system_breakpoint_r29_str: data.str "r29: " data.8 0
|
||||
system_breakpoint_r30_str: data.str "r30: " data.8 0
|
||||
system_breakpoint_r31_str: data.str "r31: " data.8 0
|
||||
|
|
|
|||
|
|
@ -6,12 +6,13 @@
|
|||
; outputs:
|
||||
; none, does not return
|
||||
panic:
|
||||
push r0
|
||||
cmp r0, 0
|
||||
ifz mov r0, panic_string
|
||||
call debug_print
|
||||
call print_string_to_monitor
|
||||
call redraw_monitor_console
|
||||
call invoke_monitor
|
||||
pop r0
|
||||
brk
|
||||
rjmp 0
|
||||
|
||||
panic_string: data.str "Unspecified panic occurred!" data.8 10 data.8 0
|
||||
|
|
|
|||
Loading…
Reference in New Issue