1 " STMFD SP!, {R0}\n"
2 //R3 = Pointer to task function to create
3
4 /*** INSTALL capt_seq_task() hook ***/
5 " LDR R0, =task_CaptSeq\n" // DryOS original code function ptr.
6 " CMP R0, R3\n" // is the given taskptr equal to our searched function?
7 " LDREQ R3, =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 // hook not fully implemented in capt_seq.c - reyalp
12 /*
13 " LDR R0, =task_ExpDrv\n"
14 " CMP R0, R3\n"
15 " LDREQ R3, =exp_drv_task\n"
16 " BEQ exitHook\n"
17 */
18
19 /*** INSTALL filewrite() hook ***/
20 //" LDR R0, =task_FileWrite\n"
21 //" CMP R0, R3\n"
22 //" LDREQ R3, =filewritetask\n"
23 //" BEQ exitHook\n"
24
25 /*** INSTALL JogDial() hook ***/
26 // was commented out in boot.c from http://chdk.setepontos.com/index.php?topic=12418.msg123489#msg123489
27 // but not in codegen file - reyalp
28 //" LDR R0, =task_RotaryEncoder\n"
29 //" CMP R0, R3\n"
30 //" LDREQ R3, =JogDial_task_my\n"
31 //" BEQ exitHook\n"
32
33 /*** INSTALL movie_record_task() hook ***/
34 " LDR R0, =task_MovieRecord\n"
35 " CMP R0, R3\n"
36 " LDREQ R3, =movie_record_task\n"
37 " BEQ exitHook\n"
38
39 /*** INSTALL liveimage_task() hook ***/
40 " LDR R0, =task_LiveImageTask\n"
41 " CMP R0, R3\n"
42 " LDREQ R3, =liveimage_task\n"
43 " BEQ exitHook\n"
44
45 /*** INSTALL init_file_modules_task() hook ***/
46 " LDR R0, =task_InitFileModules\n"
47 " CMP R0, R3\n"
48 " LDREQ R3, =init_file_modules_task\n"
49
50 "exitHook:\n"
51 // restore overwritten registers
52 " LDMFD SP!, {R0}\n"
53 // Execute overwritten instructions from original code, then jump to firmware