mirror of
https://github.com/notwa/mm
synced 2024-11-05 02:29:03 -08:00
47 lines
1.3 KiB
NASM
47 lines
1.3 KiB
NASM
.push pc
|
|
|
|
[DMARomToRam]: 0x80000BFC
|
|
|
|
[vstart]: 0x035D0000
|
|
[start]: 0x80700000
|
|
[size]: 0x10000
|
|
|
|
/*
|
|
.org 0x18F30
|
|
; add an entry to the end of dmatable to hold our extra code
|
|
; this actually just crashes the game so don't bother
|
|
; (no debug filename associated with it = bad pointer dereference? maybe?)
|
|
.word @vstart ; virtual start
|
|
.word 0x035E0000 ; virtual end (@vstart + @size)
|
|
.word @vstart ; physical start (should be same as virtual start)
|
|
.word 0 ; physical end (should be 0 for uncompressed)
|
|
*/
|
|
|
|
.base 0x7F588E60 ; code file in memory
|
|
|
|
.org 0xB3D9E4 ; 0x800C6844
|
|
; this appears to be the main game loop function
|
|
; we can "make room" for some injected code
|
|
; by taking advantage of it never returning under normal circumstances.
|
|
; we'll cut out pushing RA, S1-S8 stuff on stack.
|
|
; props to CloudMax for coming up with this.
|
|
addiu sp, sp, 0xFC60 ; original code
|
|
; push removed here
|
|
li s0, 0x8011F830 ; original code
|
|
; pushes removed here
|
|
; 9 instructions to work with?
|
|
; dma args are backwards compared to MM?
|
|
li a1, @start
|
|
li a2, @size
|
|
jal @DMARomToRam
|
|
li a0, @vstart
|
|
lui a0 0x8014 ; original code
|
|
cl a1
|
|
cl a2
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
|
|
.pop pc
|