mirror of
https://github.com/notwa/mm
synced 2024-05-05 08:33:23 -07:00
78 lines
1.5 KiB
NASM
78 lines
1.5 KiB
NASM
// translates calls to 800021F8
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// to copy strings to memory instead
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// for Lua to later pick up on
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jr
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nop
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/*
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[global_context]: 0x80212020
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// offset from first pointer in global context
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[dlist_offset]: 0x2B0
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[SetTextRGBA]: 0x800FB3AC
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[SetTextXY]: 0x800FB41C
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[SetTextString]: 0x800FBCB4
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[TxtPrinter]: 0x800FBB60
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[InitTxtStruct]: 0x800FBB8C ; unused here; we set it up inline
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[DoTxtStruct]: 0x800FBC1C
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[UpdateTxtStruct]: 0x800FBC64
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push 4, 1, ra
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// draw the debug text
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li a0, 0x00010001 // xy
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li a1, 0x88CCFFFF // rgba
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la a2, fmt
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la a3, buffer
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jal simple_text
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nop
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// reset buffer position
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la t0, buffer
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sw t0, buffer_pos
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// and set the string to null
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sb r0, 0(t0)
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ret 4, 1, ra
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fmt:
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.asciiz "%s"
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.align
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.include "simple text.asm"
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*/
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// keep track of where we are in the buffer
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.org 0x807006F8
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buffer_pos:
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.word buffer
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buffer_lock:
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.word 0
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//.align 4
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buffer:
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.skip 0x3000
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// force a crash-like thing that dumps a ton of (RDP?) info:
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//.org 0x800C5E78
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// li t8, 0x29a
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// overwrite (not hook) the debug printing function
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.org 0x800021B0
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// a0: unknown
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// a1: char *msg
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// a2: size_t len
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li t0, 1
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sw t0, buffer_lock
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lw t0, buffer_pos
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copy_loop:
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lb t1, 0(a1)
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sb t1, 0(t0)
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addi t0, t0, 1
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addi a1, a1, 1
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subi a2, a2, 1
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bne a2, r0, copy_loop
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sb r0, 0(t0) // null terminate
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sw t0, buffer_pos
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sw r0, buffer_lock
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jr
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nop
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