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Add is_task_id_used

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Ry 2022-08-11 17:35:13 -07:00
parent 0439b67d14
commit cf627052ff
3 changed files with 11 additions and 0 deletions
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1
fox32os.def
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@ -12,6 +12,7 @@ yield_task: jmp [0x00000A14]
end_current_task: jmp [0x00000A18] end_current_task: jmp [0x00000A18]
get_current_task_id: jmp [0x00000A1C] get_current_task_id: jmp [0x00000A1C]
get_unused_task_id: jmp [0x00000A20] get_unused_task_id: jmp [0x00000A20]
is_task_id_used: jmp [0x00000A24]
; memory jump table ; memory jump table
allocate_memory: jmp [0x00000B10] allocate_memory: jmp [0x00000B10]

1
kernel/main.asm
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@ -28,6 +28,7 @@ jump_table:
data.32 end_current_task data.32 end_current_task
data.32 get_current_task_id data.32 get_current_task_id
data.32 get_unused_task_id data.32 get_unused_task_id
data.32 is_task_id_used
; memory jump table ; memory jump table
org.pad 0x00000B10 org.pad 0x00000B10

9
kernel/task.asm
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@ -133,6 +133,15 @@ get_current_task_id:
pop r2 pop r2
ret ret
; check if a task ID is used
; inputs:
; r0: task ID
; outputs:
; Z flag: set if unused, reset if used
is_task_id_used:
bts [task_id_bitmap], r0
ret
task_load: task_load:
mov r2, [r0] ; task ID mov r2, [r0] ; task ID
add r0, 4 add r0, 4