mirror of
https://github.com/notwa/mm
synced 2024-06-01 18:53:06 -07:00
41 lines
872 B
NASM
41 lines
872 B
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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// reset buffer position in our per-frame hook
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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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jr
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nop
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// keep track of where we are in the buffer
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buffer_pos:
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.word 0
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// set up 2048 bytes of text buffer
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// each line is 32 words, or 128 bytes
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// i don't think this is enough, actually
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.align 8
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buffer:
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.word 0
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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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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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jr
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nop
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