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kernel/fxf/launch: Tell the caller if an error occurred

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Ry 2023-03-23 00:20:11 -07:00
parent a484da1526
commit e0b53d5454
1 changed files with 11 additions and 13 deletions
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24
kernel/fxf/launch.asm
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@ -10,7 +10,7 @@
; r5: argument 3
; r6: argument 4
; outputs:
; r0: task ID of the new task
; r0: task ID of the new task, or 0xFFFFFFFF if error
launch_fxf_from_disk:
push r0
push r1
@ -83,7 +83,15 @@ launch_fxf_from_disk:
mov r3, [launch_fxf_binary_ptr]
mov r4, [launch_fxf_stack_ptr]
call new_task
jmp launch_fxf_from_disk_end
pop r6
pop r5
pop r4
pop r3
pop r2
pop r1
movz.8 r0, [launch_fxf_task_id]
ret
launch_fxf_from_disk_allocate_error:
mov r0, launch_fxf_allocate_error_string1
mov r1, launch_fxf_allocate_error_string2
@ -92,23 +100,14 @@ launch_fxf_from_disk_allocate_error:
mov r4, 64
mov r5, 336
call new_messagebox
jmp launch_fxf_from_disk_end
launch_fxf_from_disk_file_error:
mov r0, 0
mov r1, launch_fxf_file_error_string
mov r2, 0
mov r3, 64
mov r4, 64
mov r5, 280
call new_messagebox
launch_fxf_from_disk_end:
pop r6
pop r5
pop r4
pop r3
pop r2
pop r1
movz.8 r0, [launch_fxf_task_id]
mov r0, 0xFFFFFFFF
ret
launch_fxf_struct: data.fill 0, 8
@ -118,4 +117,3 @@ launch_fxf_stack_ptr: data.32 0
launch_fxf_allocate_error_string1: data.strz "Failed to allocate memory for a new task"
launch_fxf_allocate_error_string2: data.strz "The memory allocator seems to be in an"
launch_fxf_allocate_error_string3: data.strz "invalid state, a reboot is recommended"
launch_fxf_file_error_string: data.strz "Failed to open file for a new task"