mirror of
https://github.com/notwa/mm
synced 2024-11-05 05:39:02 -08:00
38 lines
787 B
NASM
38 lines
787 B
NASM
// translates calls to 800021F8
|
|
// to copy strings to memory instead
|
|
// for Lua to later pick up on
|
|
|
|
// reset buffer position in our per-frame hook
|
|
la t0, buffer
|
|
sw t0, buffer_pos
|
|
// and set the string to null
|
|
sb r0, 0(t0)
|
|
jr
|
|
nop
|
|
|
|
// keep track of where we are in the buffer
|
|
buffer_pos:
|
|
.word 0
|
|
|
|
// we'll just let this overflow
|
|
.align 8
|
|
buffer:
|
|
.word 0
|
|
|
|
// overwrite (not hook) the debug printing function
|
|
.org 0x800021B0
|
|
// a0: unknown
|
|
// a1: char *msg
|
|
// a2: size_t len
|
|
lw t0, buffer_pos
|
|
copy_loop:
|
|
lb t1, 0(a1)
|
|
sb t1, 0(t0)
|
|
addi t0, t0, 1
|
|
addi a1, a1, 1
|
|
subi a2, a2, 1
|
|
bne a2, r0, copy_loop
|
|
sb r0, 0(t0) // null terminate
|
|
sw t0, buffer_pos
|
|
jr
|
|
nop
|