build & link with luajit instead of lua5.1

1 files changed, 436 insertions, 0 deletions

diff --git a/libs/luajit-cmake/luajit/src/host/genminilua.lua b/libs/luajit-cmake/luajit/src/host/genminilua.lua
new file mode 100644
index 0000000..e8e86c5
--- /dev/null
+++ b/libs/luajit-cmake/luajit/src/host/genminilua.lua
@@ -0,0 +1,436 @@
+----------------------------------------------------------------------------
+-- Lua script to generate a customized, minified version of Lua.
+-- The resulting 'minilua' is used for the build process of LuaJIT.
+----------------------------------------------------------------------------
+-- Copyright (C) 2005-2022 Mike Pall. All rights reserved.
+-- Released under the MIT license. See Copyright Notice in luajit.h
+----------------------------------------------------------------------------
+
+local sub, match, gsub = string.sub, string.match, string.gsub
+
+local LUA_VERSION = "5.1.5"
+local LUA_SOURCE
+
+local function usage()
+  io.stderr:write("Usage: ", arg and arg[0] or "genminilua",
+		  " lua-", LUA_VERSION, "-source-dir\n")
+  os.exit(1)
+end
+
+local function find_sources()
+  LUA_SOURCE = arg and arg[1]
+  if not LUA_SOURCE then usage() end
+  if sub(LUA_SOURCE, -1) ~= "/" then LUA_SOURCE = LUA_SOURCE.."/" end
+  local fp = io.open(LUA_SOURCE .. "lua.h")
+  if not fp then
+    LUA_SOURCE = LUA_SOURCE.."src/"
+    fp = io.open(LUA_SOURCE .. "lua.h")
+    if not fp then usage() end
+  end
+  local all = fp:read("*a")
+  fp:close()
+  if not match(all, 'LUA_RELEASE%s*"Lua '..LUA_VERSION..'"') then
+    io.stderr:write("Error: version mismatch\n")
+    usage()
+  end
+end
+
+local LUA_FILES = {
+"lmem.c", "lobject.c", "ltm.c", "lfunc.c", "ldo.c", "lstring.c", "ltable.c",
+"lgc.c", "lstate.c", "ldebug.c", "lzio.c", "lopcodes.c",
+"llex.c", "lcode.c", "lparser.c", "lvm.c", "lapi.c", "lauxlib.c",
+"lbaselib.c", "ltablib.c", "liolib.c", "loslib.c", "lstrlib.c", "linit.c",
+}
+
+local REMOVE_LIB = {}
+gsub([[
+collectgarbage dofile gcinfo getfenv getmetatable load print rawequal rawset
+select tostring xpcall
+foreach foreachi getn maxn setn
+popen tmpfile seek setvbuf __tostring
+clock date difftime execute getenv rename setlocale time tmpname
+dump gfind len reverse
+LUA_LOADLIBNAME LUA_MATHLIBNAME LUA_DBLIBNAME
+]], "%S+", function(name)
+  REMOVE_LIB[name] = true
+end)
+
+local REMOVE_EXTINC = { ["<assert.h>"] = true, ["<locale.h>"] = true, }
+
+local CUSTOM_MAIN = [[
+typedef unsigned int UB;
+static UB barg(lua_State *L,int idx){
+union{lua_Number n;U64 b;}bn;
+bn.n=lua_tonumber(L,idx)+6755399441055744.0;
+if (bn.n==0.0&&!lua_isnumber(L,idx))luaL_typerror(L,idx,"number");
+return(UB)bn.b;
+}
+#define BRET(b) lua_pushnumber(L,(lua_Number)(int)(b));return 1;
+static int tobit(lua_State *L){
+BRET(barg(L,1))}
+static int bnot(lua_State *L){
+BRET(~barg(L,1))}
+static int band(lua_State *L){
+int i;UB b=barg(L,1);for(i=lua_gettop(L);i>1;i--)b&=barg(L,i);BRET(b)}
+static int bor(lua_State *L){
+int i;UB b=barg(L,1);for(i=lua_gettop(L);i>1;i--)b|=barg(L,i);BRET(b)}
+static int bxor(lua_State *L){
+int i;UB b=barg(L,1);for(i=lua_gettop(L);i>1;i--)b^=barg(L,i);BRET(b)}
+static int lshift(lua_State *L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET(b<<n)}
+static int rshift(lua_State *L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET(b>>n)}
+static int arshift(lua_State *L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET((int)b>>n)}
+static int rol(lua_State *L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET((b<<n)|(b>>(32-n)))}
+static int ror(lua_State *L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET((b>>n)|(b<<(32-n)))}
+static int bswap(lua_State *L){
+UB b=barg(L,1);b=(b>>24)|((b>>8)&0xff00)|((b&0xff00)<<8)|(b<<24);BRET(b)}
+static int tohex(lua_State *L){
+UB b=barg(L,1);
+int n=lua_isnone(L,2)?8:(int)barg(L,2);
+const char *hexdigits="0123456789abcdef";
+char buf[8];
+int i;
+if(n<0){n=-n;hexdigits="0123456789ABCDEF";}
+if(n>8)n=8;
+for(i=(int)n;--i>=0;){buf[i]=hexdigits[b&15];b>>=4;}
+lua_pushlstring(L,buf,(size_t)n);
+return 1;
+}
+static const struct luaL_Reg bitlib[] = {
+{"tobit",tobit},
+{"bnot",bnot},
+{"band",band},
+{"bor",bor},
+{"bxor",bxor},
+{"lshift",lshift},
+{"rshift",rshift},
+{"arshift",arshift},
+{"rol",rol},
+{"ror",ror},
+{"bswap",bswap},
+{"tohex",tohex},
+{NULL,NULL}
+};
+int main(int argc, char **argv){
+  lua_State *L = luaL_newstate();
+  int i;
+  luaL_openlibs(L);
+  luaL_register(L, "bit", bitlib);
+  if (argc < 2) return sizeof(void *);
+  lua_createtable(L, 0, 1);
+  lua_pushstring(L, argv[1]);
+  lua_rawseti(L, -2, 0);
+  lua_setglobal(L, "arg");
+  if (luaL_loadfile(L, argv[1]))
+    goto err;
+  for (i = 2; i < argc; i++)
+    lua_pushstring(L, argv[i]);
+  if (lua_pcall(L, argc - 2, 0, 0)) {
+  err:
+    fprintf(stderr, "Error: %s\n", lua_tostring(L, -1));
+    return 1;
+  }
+  lua_close(L);
+  return 0;
+}
+]]
+
+local function read_sources()
+  local t = {}
+  for i, name in ipairs(LUA_FILES) do
+    local fp = assert(io.open(LUA_SOURCE..name, "r"))
+    t[i] = fp:read("*a")
+    assert(fp:close())
+  end
+  t[#t+1] = CUSTOM_MAIN
+  return table.concat(t)
+end
+
+local includes = {}
+
+local function merge_includes(src)
+  return gsub(src, '#include%s*"([^"]*)"%s*\n', function(name)
+    if includes[name] then return "" end
+    includes[name] = true
+    local fp = assert(io.open(LUA_SOURCE..name, "r"))
+    local inc = fp:read("*a")
+    assert(fp:close())
+    inc = gsub(inc, "#ifndef%s+%w+_h\n#define%s+%w+_h\n", "")
+    inc = gsub(inc, "#endif%s*$", "")
+    return merge_includes(inc)
+  end)
+end
+
+local function get_license(src)
+  return match(src, "/%*+\n%* Copyright %(.-%*/\n")
+end
+
+local function fold_lines(src)
+  return gsub(src, "\\\n", " ")
+end
+
+local strings = {}
+
+local function save_str(str)
+  local n = #strings+1
+  strings[n] = str
+  return "\1"..n.."\2"
+end
+
+local function save_strings(src)
+  src = gsub(src, '"[^"\n]*"', save_str)
+  return gsub(src, "'[^'\n]*'", save_str)
+end
+
+local function restore_strings(src)
+  return gsub(src, "\1(%d+)\2", function(numstr)
+    return strings[tonumber(numstr)]
+  end)
+end
+
+local function def_istrue(def)
+  return def == "INT_MAX > 2147483640L" or
+	 def == "LUAI_BITSINT >= 32" or
+	 def == "SIZE_Bx < LUAI_BITSINT-1" or
+	 def == "cast" or
+	 def == "defined(LUA_CORE)" or
+	 def == "MINSTRTABSIZE" or
+	 def == "LUA_MINBUFFER" or
+	 def == "HARDSTACKTESTS" or
+	 def == "UNUSED"
+end
+
+local head, defs = {[[
+#ifdef _MSC_VER
+typedef unsigned __int64 U64;
+#else
+typedef unsigned long long U64;
+#endif
+int _CRT_glob = 0;
+]]}, {}
+
+local function preprocess(src)
+  local t = { match(src, "^(.-)#") }
+  local lvl, on, oldon = 0, true, {}
+  for pp, def, txt in string.gmatch(src, "#(%w+) *([^\n]*)\n([^#]*)") do
+    if pp == "if" or pp == "ifdef" or pp == "ifndef" then
+      lvl = lvl + 1
+      oldon[lvl] = on
+      on = def_istrue(def)
+    elseif pp == "else" then
+      if oldon[lvl] then
+	if on == false then on = true else on = false end
+      end
+    elseif pp == "elif" then
+      if oldon[lvl] then
+	on = def_istrue(def)
+      end
+    elseif pp == "endif" then
+      on = oldon[lvl]
+      lvl = lvl - 1
+    elseif on then
+      if pp == "include" then
+	if not head[def] and not REMOVE_EXTINC[def] then
+	  head[def] = true
+	  head[#head+1] = "#include "..def.."\n"
+	end
+      elseif pp == "define" then
+	local k, sp, v = match(def, "([%w_]+)(%s*)(.*)")
+	if k and not (sp == "" and sub(v, 1, 1) == "(") then
+	  defs[k] = gsub(v, "%a[%w_]*", function(tok)
+	    return defs[tok] or tok
+	  end)
+	else
+	  t[#t+1] = "#define "..def.."\n"
+	end
+      elseif pp ~= "undef" then
+	error("unexpected directive: "..pp.." "..def)
+      end
+    end
+    if on then t[#t+1] = txt end
+  end
+  return gsub(table.concat(t), "%a[%w_]*", function(tok)
+    return defs[tok] or tok
+  end)
+end
+
+local function merge_header(src, license)
+  local hdr = string.format([[
+/* This is a heavily customized and minimized copy of Lua %s. */
+/* It's only used to build LuaJIT. It does NOT have all standard functions! */
+]], LUA_VERSION)
+  return hdr..license..table.concat(head)..src
+end
+
+local function strip_unused1(src)
+  return gsub(src, '(  {"?([%w_]+)"?,%s+%a[%w_]*},\n)', function(line, func)
+    return REMOVE_LIB[func] and "" or line
+  end)
+end
+
+local function strip_unused2(src)
+  return gsub(src, "Symbolic Execution.-}=", "")
+end
+
+local function strip_unused3(src)
+  src = gsub(src, "extern", "static")
+  src = gsub(src, "\nstatic([^\n]-)%(([^)]*)%)%(", "\nstatic%1 %2(")
+  src = gsub(src, "#define lua_assert[^\n]*\n", "")
+  src = gsub(src, "lua_assert%b();?", "")
+  src = gsub(src, "default:\n}", "default:;\n}")
+  src = gsub(src, "lua_lock%b();", "")
+  src = gsub(src, "lua_unlock%b();", "")
+  src = gsub(src, "luai_threadyield%b();", "")
+  src = gsub(src, "luai_userstateopen%b();", "{}")
+  src = gsub(src, "luai_userstate%w+%b();", "")
+  src = gsub(src, "%(%(c==.*luaY_parser%)", "luaY_parser")
+  src = gsub(src, "trydecpoint%(ls,seminfo%)",
+		  "luaX_lexerror(ls,\"malformed number\",TK_NUMBER)")
+  src = gsub(src, "int c=luaZ_lookahead%b();", "")
+  src = gsub(src, "luaL_register%(L,[^,]*,co_funcs%);\nreturn 2;",
+		  "return 1;")
+  src = gsub(src, "getfuncname%b():", "NULL:")
+  src = gsub(src, "getobjname%b():", "NULL:")
+  src = gsub(src, "if%([^\n]*hookmask[^\n]*%)\n[^\n]*\n", "")
+  src = gsub(src, "if%([^\n]*hookmask[^\n]*%)%b{}\n", "")
+  src = gsub(src, "if%([^\n]*hookmask[^\n]*&&\n[^\n]*%b{}\n", "")
+  src = gsub(src, "(twoto%b()%()", "%1(size_t)")
+  src = gsub(src, "i<sizenode", "i<(int)sizenode")
+  src = gsub(src, "cast%(unsigned int,key%-1%)", "cast(unsigned int,key)-1")
+  return gsub(src, "\n\n+", "\n")
+end
+
+local function strip_comments(src)
+  return gsub(src, "/%*.-%*/", " ")
+end
+
+local function strip_whitespace(src)
+  src = gsub(src, "^%s+", "")
+  src = gsub(src, "%s*\n%s*", "\n")
+  src = gsub(src, "[ \t]+", " ")
+  src = gsub(src, "(%W) ", "%1")
+  return gsub(src, " (%W)", "%1")
+end
+
+local function rename_tokens1(src)
+  src = gsub(src, "getline", "getline_")
+  src = gsub(src, "struct ([%w_]+)", "ZX%1")
+  return gsub(src, "union ([%w_]+)", "ZY%1")
+end
+
+local function rename_tokens2(src)
+  src = gsub(src, "ZX([%w_]+)", "struct %1")
+  return gsub(src, "ZY([%w_]+)", "union %1")
+end
+
+local function fix_bugs_and_warnings(src)
+ src = gsub(src, "(luaD_checkstack%(L,p%->maxstacksize)%)", "%1+p->numparams)")
+ src = gsub(src, "if%(sep==%-1%)(return'%[';)\nelse (luaX_lexerror%b();)", "if (sep!=-1)%2\n%1")
+ return gsub(src, "(default:{\nNode%*n=mainposition)", "/*fallthrough*/\n%1")
+end
+
+local function func_gather(src)
+  local nodes, list = {}, {}
+  local pos, len = 1, #src
+  while pos < len do
+    local d, w = match(src, "^(#define ([%w_]+)[^\n]*\n)", pos)
+    if d then
+      local n = #list+1
+      list[n] = d
+      nodes[w] = n
+    else
+      local s
+      d, w, s = match(src, "^(([%w_]+)[^\n]*([{;])\n)", pos)
+      if not d then
+	d, w, s = match(src, "^(([%w_]+)[^(]*%b()([{;])\n)", pos)
+	if not d then d = match(src, "^[^\n]*\n", pos) end
+      end
+      if s == "{" then
+	d = d..sub(match(src, "^%b{}[^;\n]*;?\n", pos+#d-2), 3)
+	if sub(d, -2) == "{\n" then
+	  d = d..sub(match(src, "^%b{}[^;\n]*;?\n", pos+#d-2), 3)
+	end
+      end
+      local k, v = nil, d
+      if w == "typedef" then
+	if match(d, "^typedef enum") then
+	  head[#head+1] = d
+	else
+	  k = match(d, "([%w_]+);\n$")
+	  if not k then k = match(d, "^.-%(.-([%w_]+)%)%(") end
+	end
+      elseif w == "enum" then
+	head[#head+1] = v
+      elseif w ~= nil then
+	k = match(d, "^[^\n]-([%w_]+)[(%[=]")
+	if k then
+	  if w ~= "static" and k ~= "main" then v = "static "..d end
+	else
+	  k = w
+	end
+      end
+      if w and k then
+	local o = nodes[k]
+	if o then nodes["*"..k] = o end
+	local n = #list+1
+	list[n] = v
+	nodes[k] = n
+      end
+    end
+    pos = pos + #d
+  end
+  return nodes, list
+end
+
+local function func_visit(nodes, list, used, n)
+  local i = nodes[n]
+  for m in string.gmatch(list[i], "[%w_]+") do
+    if nodes[m] then
+      local j = used[m]
+      if not j then
+	used[m] = i
+	func_visit(nodes, list, used, m)
+      elseif i < j then
+	used[m] = i
+      end
+    end
+  end
+end
+
+local function func_collect(src)
+  local nodes, list = func_gather(src)
+  local used = {}
+  func_visit(nodes, list, used, "main")
+  for n,i in pairs(nodes) do
+    local j = used[n]
+    if j and j < i then used["*"..n] = j end
+  end
+  for n,i in pairs(nodes) do
+    if not used[n] then list[i] = "" end
+  end
+  return table.concat(list)
+end
+
+find_sources()
+local src = read_sources()
+src = merge_includes(src)
+local license = get_license(src)
+src = fold_lines(src)
+src = strip_unused1(src)
+src = save_strings(src)
+src = strip_unused2(src)
+src = strip_comments(src)
+src = preprocess(src)
+src = strip_whitespace(src)
+src = strip_unused3(src)
+src = rename_tokens1(src)
+src = func_collect(src)
+src = rename_tokens2(src)
+src = restore_strings(src)
+src = fix_bugs_and_warnings(src)
+src = merge_header(src, license)
+io.write(src)