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kernel/fxf/launch: Specify disk ID, and fix issue with argument passing

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This commit is contained in:
Ry 2023-03-22 22:24:01 -07:00
parent 8103ec8bcd
commit 59c688fc87
1 changed files with 24 additions and 9 deletions
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33
kernel/fxf/launch.asm
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@ -3,11 +3,12 @@
; launch an FXF binary from a file on disk
; inputs:
; r0: pointer to FXF binary name (8.3 format, for example "testfile.fxf" or "test.fxf")
; r1: argument 0
; r2: argument 1
; r3: argument 2
; r4: argument 3
; r5: argument 4
; r1: disk ID
; r2: argument 0
; r3: argument 1
; r4: argument 2
; r5: argument 3
; r6: argument 4
; outputs:
; none
launch_fxf_from_disk:
@ -16,9 +17,16 @@ launch_fxf_from_disk:
push r2
push r3
push r4
push r5
push r6
push r2
push r3
push r4
push r5
push r6
; open the file
mov r1, 0
mov r2, launch_fxf_struct
call open
cmp r0, 0
@ -45,17 +53,22 @@ launch_fxf_from_disk:
mov [launch_fxf_stack_ptr], r0
; push the arguments to the task's stack
mov r4, rsp
pop r4
pop r3
pop r2
pop r1
pop r0
mov r5, rsp
mov rsp, [launch_fxf_stack_ptr]
add rsp, 65536 ; point to the end of the stack (stack grows down!!)
push r5
push r4
push r3
push r2
push r1
push r0
sub rsp, 65516
mov [launch_fxf_stack_ptr], rsp
mov rsp, r4
mov rsp, r5
; relocate the binary
mov r0, [launch_fxf_binary_ptr]
@ -70,6 +83,8 @@ launch_fxf_from_disk:
mov r4, [launch_fxf_stack_ptr]
call new_task
allocate_error:
pop r6
pop r5
pop r4
pop r3
pop r2