xenia/fox32rom
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Show the actual rip value in the monitor when an exception occurs

Browse Source
This commit is contained in:
Ry 2023-01-22 16:32:05 -08:00
parent 8fb3e8a982
commit 1899ed0f67
1 changed files with 21 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
exception.asm
View File

@ -3,23 +3,41 @@
; called if a divide by zero occurs
; does not return, calls panic
system_div_zero_handler:
push r0
mov r0, system_div_zero_str
jmp panic
call debug_print
call print_string_to_monitor
pop r0
jmp system_breakpoint_handler
system_div_zero_str: data.str "Divide by zero" data.8 10 data.8 0
; called if an invalid opcode is executed
; does not return, calls panic
system_invalid_op_handler:
push r0
mov r0, system_invalid_op_str
jmp panic
call debug_print
call print_string_to_monitor
pop r0
jmp system_breakpoint_handler
system_invalid_op_str: data.str "Invalid opcode" data.8 10 data.8 0
; called if a page fault occurs
; does not return, calls panic
system_page_fault_handler:
push r0
mov r0, system_page_fault_str
call debug_print
call print_string_to_monitor
pop r0
pop r1
jmp panic
jmp system_breakpoint_handler
system_page_fault_str: data.str "Page fault at virtual address r1" data.8 10 data.8 0
; called upon execution of a `brk` instruction