From bb283f4581ac07a4dd75325c4343d7f28b1ff376 Mon Sep 17 00:00:00 2001
From: Andy Belle-Isle <drumsetmonkey@gmail.com>
Date: Sun, 25 Aug 2019 16:39:02 -0400
Subject: Fixed LuaJIT files
---
lib/LuaJIT/host/genlibbc.lua | 197 -------------------------------------------
1 file changed, 197 deletions(-)
delete mode 100644 lib/LuaJIT/host/genlibbc.lua
(limited to 'lib/LuaJIT/host/genlibbc.lua')
diff --git a/lib/LuaJIT/host/genlibbc.lua b/lib/LuaJIT/host/genlibbc.lua
deleted file mode 100644
index 6f5a05c..0000000
--- a/lib/LuaJIT/host/genlibbc.lua
+++ /dev/null
@@ -1,197 +0,0 @@
-----------------------------------------------------------------------------
--- Lua script to dump the bytecode of the library functions written in Lua.
--- The resulting 'buildvm_libbc.h' is used for the build process of LuaJIT.
-----------------------------------------------------------------------------
--- Copyright (C) 2005-2017 Mike Pall. All rights reserved.
--- Released under the MIT license. See Copyright Notice in luajit.h
-----------------------------------------------------------------------------
-
-local ffi = require("ffi")
-local bit = require("bit")
-local vmdef = require("jit.vmdef")
-local bcnames = vmdef.bcnames
-
-local format = string.format
-
-local isbe = (string.byte(string.dump(function() end), 5) % 2 == 1)
-
-local function usage(arg)
- io.stderr:write("Usage: ", arg and arg[0] or "genlibbc",
- " [-o buildvm_libbc.h] lib_*.c\n")
- os.exit(1)
-end
-
-local function parse_arg(arg)
- local outfile = "-"
- if not (arg and arg[1]) then
- usage(arg)
- end
- if arg[1] == "-o" then
- outfile = arg[2]
- if not outfile then usage(arg) end
- table.remove(arg, 1)
- table.remove(arg, 1)
- end
- return outfile
-end
-
-local function read_files(names)
- local src = ""
- for _,name in ipairs(names) do
- local fp = assert(io.open(name))
- src = src .. fp:read("*a")
- fp:close()
- end
- return src
-end
-
-local function transform_lua(code)
- local fixup = {}
- local n = -30000
- code = string.gsub(code, "CHECK_(%w*)%((.-)%)", function(tp, var)
- n = n + 1
- fixup[n] = { "CHECK", tp }
- return format("%s=%d", var, n)
- end)
- code = string.gsub(code, "PAIRS%((.-)%)", function(var)
- fixup.PAIRS = true
- return format("nil, %s, 0", var)
- end)
- return "return "..code, fixup
-end
-
-local function read_uleb128(p)
- local v = p[0]; p = p + 1
- if v >= 128 then
- local sh = 7; v = v - 128
- repeat
- local r = p[0]
- v = v + bit.lshift(bit.band(r, 127), sh)
- sh = sh + 7
- p = p + 1
- until r < 128
- end
- return p, v
-end
-
--- ORDER LJ_T
-local name2itype = {
- str = 5, func = 9, tab = 12, int = 14, num = 15
-}
-
-local BC = {}
-for i=0,#bcnames/6-1 do
- BC[string.gsub(string.sub(bcnames, i*6+1, i*6+6), " ", "")] = i
-end
-local xop, xra = isbe and 3 or 0, isbe and 2 or 1
-local xrc, xrb = isbe and 1 or 2, isbe and 0 or 3
-
-local function fixup_dump(dump, fixup)
- local buf = ffi.new("uint8_t[?]", #dump+1, dump)
- local p = buf+5
- local n, sizebc
- p, n = read_uleb128(p)
- local start = p
- p = p + 4
- p = read_uleb128(p)
- p = read_uleb128(p)
- p, sizebc = read_uleb128(p)
- local rawtab = {}
- for i=0,sizebc-1 do
- local op = p[xop]
- if op == BC.KSHORT then
- local rd = p[xrc] + 256*p[xrb]
- rd = bit.arshift(bit.lshift(rd, 16), 16)
- local f = fixup[rd]
- if f then
- if f[1] == "CHECK" then
- local tp = f[2]
- if tp == "tab" then rawtab[p[xra]] = true end
- p[xop] = tp == "num" and BC.ISNUM or BC.ISTYPE
- p[xrb] = 0
- p[xrc] = name2itype[tp]
- else
- error("unhandled fixup type: "..f[1])
- end
- end
- elseif op == BC.TGETV then
- if rawtab[p[xrb]] then
- p[xop] = BC.TGETR
- end
- elseif op == BC.TSETV then
- if rawtab[p[xrb]] then
- p[xop] = BC.TSETR
- end
- elseif op == BC.ITERC then
- if fixup.PAIRS then
- p[xop] = BC.ITERN
- end
- end
- p = p + 4
- end
- return ffi.string(start, n)
-end
-
-local function find_defs(src)
- local defs = {}
- for name, code in string.gmatch(src, "LJLIB_LUA%(([^)]*)%)%s*/%*(.-)%*/") do
- local env = {}
- local tcode, fixup = transform_lua(code)
- local func = assert(load(tcode, "", nil, env))()
- defs[name] = fixup_dump(string.dump(func, true), fixup)
- defs[#defs+1] = name
- end
- return defs
-end
-
-local function gen_header(defs)
- local t = {}
- local function w(x) t[#t+1] = x end
- w("/* This is a generated file. DO NOT EDIT! */\n\n")
- w("static const int libbc_endian = ") w(isbe and 1 or 0) w(";\n\n")
- local s = ""
- for _,name in ipairs(defs) do
- s = s .. defs[name]
- end
- w("static const uint8_t libbc_code[] = {\n")
- local n = 0
- for i=1,#s do
- local x = string.byte(s, i)
- w(x); w(",")
- n = n + (x < 10 and 2 or (x < 100 and 3 or 4))
- if n >= 75 then n = 0; w("\n") end
- end
- w("0\n};\n\n")
- w("static const struct { const char *name; int ofs; } libbc_map[] = {\n")
- local m = 0
- for _,name in ipairs(defs) do
- w('{"'); w(name); w('",'); w(m) w('},\n')
- m = m + #defs[name]
- end
- w("{NULL,"); w(m); w("}\n};\n\n")
- return table.concat(t)
-end
-
-local function write_file(name, data)
- if name == "-" then
- assert(io.write(data))
- assert(io.flush())
- else
- local fp = io.open(name)
- if fp then
- local old = fp:read("*a")
- fp:close()
- if data == old then return end
- end
- fp = assert(io.open(name, "w"))
- assert(fp:write(data))
- assert(fp:close())
- end
-end
-
-local outfile = parse_arg(arg)
-local src = read_files(arg)
-local defs = find_defs(src)
-local hdr = gen_header(defs)
-write_file(outfile, hdr)
-
--
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