diff options
| -rw-r--r-- | utils/AMS/hacking/test.S | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/utils/AMS/hacking/test.S b/utils/AMS/hacking/test.S index 2e1796f..79d23de 100644 --- a/utils/AMS/hacking/test.S +++ b/utils/AMS/hacking/test.S @@ -27,10 +27,30 @@ start: loop: subs r1, r1, #1 bne loop - /* Call the ucl decompress function, which will branch to 0x0 - on completion */ + /* First copy the compressed firmware to unused RAM */ + ldr r0, ucl_start /* Source */ ldr r1, ucl_size /* Source length */ + + mov r2, #0x40000 /* Destination end */ + sub r2, r2, r1 + +memcpy: + ldrb r3, [r0] + strb r3, [r2] + adds r0, r0, #1 + adds r2, r2, #1 + cmp r2, #0x40000 /* Stop when we reached dest_end */ + bne memcpy + + sub r0, r2, r1 /* Point to the compressed firmware */ + + /* Call the ucl decompress function, which will branch to 0x0 */ + /* on completion */ + mov r2, #0 /* Destination */ + ldr r3, ucl_unpack bx r3 + + /* never reached */ |