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mm/Lua/inject/print.asm
Connor Olding e50dd330b8 update debug printing
render to the HUD dlist and clean out some code
2016-04-15 08:34:25 -07:00

67 lines
1.4 KiB
NASM

// translates calls to 800021F8
// to copy strings to memory instead
// for Lua to later pick up on
[global_context]: 0x80212020
// offset from first pointer in global context
[dlist_offset]: 0x2B0
[SetTextRGBA]: 0x800FB3AC
[SetTextXY]: 0x800FB41C
[SetTextString]: 0x800FBCB4
[TxtPrinter]: 0x800FBB60
[InitTxtStruct]: 0x800FBB8C // unused here; we set it up inline
[DoTxtStruct]: 0x800FBC1C
[UpdateTxtStruct]: 0x800FBC64
[ObjectSpawn]: 0x80097C00
[ObjectIndex]: 0x8009812C
push 4, 1, ra
// draw the debug text
li a0, 0x00010001 // xy
li a1, 0x88CCFFFF // rgba
la a2, fmt
la a3, buffer
jal simple_text
nop
// reset buffer position
la t0, buffer
sw t0, buffer_pos
// and set the string to null
sb r0, 0(t0)
jpop 4, 1, ra
fmt:
.asciiz "%s"
.align
.include "simple text.asm"
// keep track of where we are in the buffer
buffer_pos:
.word 0
.align 4
buffer:
.skip 0x3000
// 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