1 " STMFD SP!, {R1}\n"
2 //R0 = Pointer to task function to create
3
4 /*** INSTALL capt_seq_task() hook ***/
5 " LDR R1, =task_CaptSeq\n" // DryOS original code function ptr.
6 " CMP R1, R0\n" // is the given taskptr equal to our searched function?
7 " LDREQ R0, =capt_seq_task\n" // if so replace with our task function base ptr.
8 " BEQ exitHook\n" // below compares not necessary if this check has found something.
9
10 /*** INSTALL exp_drv_task() hook ***/
11 " LDR R1, =task_ExpDrv\n"
12 " CMP R1, R0\n"
13 " LDREQ R0, =exp_drv_task\n"
14 " BEQ exitHook\n"
15
16 /*** INSTALL filewrite() hook ***/
17 " LDR R1, =task_FileWrite\n"
18 " CMP R1, R0\n"
19 " LDREQ R0, =filewritetask\n"
20 " BEQ exitHook\n"
21
22 /*** INSTALL movie_record_task() hook ***/
23 " LDR R1, =task_MovieRecord\n"
24 " CMP R1, R0\n"
25 " LDREQ R0, =movie_record_task\n"
26 " BEQ exitHook\n"
27
28 /*** INSTALL init_file_modules_task() hook ***/
29 " LDR R1, =task_InitFileModules\n"
30 " CMP R1, R0\n"
31 " LDREQ R0, =init_file_modules_task\n"
32
33 "exitHook:\n"
34 // restore overwritten registers
35 " LDMFD SP!, {R1}\n"
36 // Execute overwritten instructions from original code, then jump to firmware