mirror of
https://github.com/notwa/mm
synced 2024-11-05 03:29:02 -08:00
39 lines
996 B
Lua
39 lines
996 B
Lua
package.path = package.path..";./?/init.lua"
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local assemble = require "lips"
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local function inject(patch, target, offset)
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offset = offset or 0
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local f = io.open(target, 'r+b')
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local function write(pos, line)
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assert(#line == 2, "that ain't const")
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-- TODO: write hex dump format of written bytes
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if pos >= offset then
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pos = pos - offset
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end
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if pos >= 1024*1024*1024 then
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print("you probably don't want to do this:")
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print(("%08X"):format(pos), line)
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return
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end
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f:seek('set', pos)
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f:write(string.char(tonumber(line, 16)))
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end
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-- offset assembly labels so they work properly, and assemble!
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assemble(patch, write, {unsafe=true, offset=offset})
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f:close()
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end
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local offset = arg[3]
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if offset then
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if offset:sub(2) == '0x' then
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offset = tonumber(offset, 16)
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else
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offset = tonumber(offset)
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end
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end
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inject(arg[1], arg[2], offset)
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