From 6523585c66c04cea54df50013df8886b589847d8 Mon Sep 17 00:00:00 2001 From: David Walter Seikel Date: Mon, 23 Jan 2012 23:36:30 +1000 Subject: Add luaproc and LuaJIT libraries. Two versions of LuaJIT, the stable release, and the dev version. Try the dev version first, until ih fails badly. --- libraries/luajit-2.0/lib/dump.lua | 685 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 685 insertions(+) create mode 100644 libraries/luajit-2.0/lib/dump.lua (limited to 'libraries/luajit-2.0/lib/dump.lua') diff --git a/libraries/luajit-2.0/lib/dump.lua b/libraries/luajit-2.0/lib/dump.lua new file mode 100644 index 0000000..0f0e905 --- /dev/null +++ b/libraries/luajit-2.0/lib/dump.lua @@ -0,0 +1,685 @@ +---------------------------------------------------------------------------- +-- LuaJIT compiler dump module. +-- +-- Copyright (C) 2005-2011 Mike Pall. All rights reserved. +-- Released under the MIT license. See Copyright Notice in luajit.h +---------------------------------------------------------------------------- +-- +-- This module can be used to debug the JIT compiler itself. It dumps the +-- code representations and structures used in various compiler stages. +-- +-- Example usage: +-- +-- luajit -jdump -e "local x=0; for i=1,1e6 do x=x+i end; print(x)" +-- luajit -jdump=im -e "for i=1,1000 do for j=1,1000 do end end" | less -R +-- luajit -jdump=is myapp.lua | less -R +-- luajit -jdump=-b myapp.lua +-- luajit -jdump=+aH,myapp.html myapp.lua +-- luajit -jdump=ixT,myapp.dump myapp.lua +-- +-- The first argument specifies the dump mode. The second argument gives +-- the output file name. Default output is to stdout, unless the environment +-- variable LUAJIT_DUMPFILE is set. The file is overwritten every time the +-- module is started. +-- +-- Different features can be turned on or off with the dump mode. If the +-- mode starts with a '+', the following features are added to the default +-- set of features; a '-' removes them. Otherwise the features are replaced. +-- +-- The following dump features are available (* marks the default): +-- +-- * t Print a line for each started, ended or aborted trace (see also -jv). +-- * b Dump the traced bytecode. +-- * i Dump the IR (intermediate representation). +-- r Augment the IR with register/stack slots. +-- s Dump the snapshot map. +-- * m Dump the generated machine code. +-- x Print each taken trace exit. +-- X Print each taken trace exit and the contents of all registers. +-- +-- The output format can be set with the following characters: +-- +-- T Plain text output. +-- A ANSI-colored text output +-- H Colorized HTML + CSS output. +-- +-- The default output format is plain text. It's set to ANSI-colored text +-- if the COLORTERM variable is set. Note: this is independent of any output +-- redirection, which is actually considered a feature. +-- +-- You probably want to use less -R to enjoy viewing ANSI-colored text from +-- a pipe or a file. Add this to your ~/.bashrc: export LESS="-R" +-- +------------------------------------------------------------------------------ + +-- Cache some library functions and objects. +local jit = require("jit") +assert(jit.version_num == 20000, "LuaJIT core/library version mismatch") +local jutil = require("jit.util") +local vmdef = require("jit.vmdef") +local funcinfo, funcbc = jutil.funcinfo, jutil.funcbc +local traceinfo, traceir, tracek = jutil.traceinfo, jutil.traceir, jutil.tracek +local tracemc, tracesnap = jutil.tracemc, jutil.tracesnap +local traceexitstub, ircalladdr = jutil.traceexitstub, jutil.ircalladdr +local bit = require("bit") +local band, shl, shr = bit.band, bit.lshift, bit.rshift +local sub, gsub, format = string.sub, string.gsub, string.format +local byte, char, rep = string.byte, string.char, string.rep +local type, tostring = type, tostring +local stdout, stderr = io.stdout, io.stderr + +-- Load other modules on-demand. +local bcline, disass + +-- Active flag, output file handle and dump mode. +local active, out, dumpmode + +------------------------------------------------------------------------------ + +local symtabmt = { __index = false } +local symtab = {} +local nexitsym = 0 + +-- Fill nested symbol table with per-trace exit stub addresses. +local function fillsymtab_tr(tr, nexit) + local t = {} + symtabmt.__index = t + for i=0,nexit-1 do + local addr = traceexitstub(tr, i) + t[addr] = tostring(i) + end + local addr = traceexitstub(tr, nexit) + if addr then t[addr] = "stack_check" end +end + +-- Fill symbol table with trace exit stub addresses. +local function fillsymtab(tr, nexit) + local t = symtab + if nexitsym == 0 then + local ircall = vmdef.ircall + for i=0,#ircall do + local addr = ircalladdr(i) + if addr ~= 0 then t[addr] = ircall[i] end + end + end + if nexitsym == 1000000 then -- Per-trace exit stubs. + fillsymtab_tr(tr, nexit) + elseif nexit > nexitsym then -- Shared exit stubs. + for i=nexitsym,nexit-1 do + local addr = traceexitstub(i) + if addr == nil then -- Fall back to per-trace exit stubs. + fillsymtab_tr(tr, nexit) + setmetatable(symtab, symtabmt) + nexit = 1000000 + break + end + t[addr] = tostring(i) + end + nexitsym = nexit + end + return t +end + +local function dumpwrite(s) + out:write(s) +end + +-- Disassemble machine code. +local function dump_mcode(tr) + local info = traceinfo(tr) + if not info then return end + local mcode, addr, loop = tracemc(tr) + if not mcode then return end + if not disass then disass = require("jit.dis_"..jit.arch) end + out:write("---- TRACE ", tr, " mcode ", #mcode, "\n") + local ctx = disass.create(mcode, addr, dumpwrite) + ctx.hexdump = 0 + ctx.symtab = fillsymtab(tr, info.nexit) + if loop ~= 0 then + symtab[addr+loop] = "LOOP" + ctx:disass(0, loop) + out:write("->LOOP:\n") + ctx:disass(loop, #mcode-loop) + symtab[addr+loop] = nil + else + ctx:disass(0, #mcode) + end +end + +------------------------------------------------------------------------------ + +local irtype_text = { + [0] = "nil", + "fal", + "tru", + "lud", + "str", + "p32", + "thr", + "pro", + "fun", + "p64", + "cdt", + "tab", + "udt", + "flt", + "num", + "i8 ", + "u8 ", + "i16", + "u16", + "int", + "u32", + "i64", + "u64", + "sfp", +} + +local colortype_ansi = { + [0] = "%s", + "%s", + "%s", + "\027[36m%s\027[m", + "\027[32m%s\027[m", + "%s", + "\027[1m%s\027[m", + "%s", + "\027[1m%s\027[m", + "%s", + "\027[33m%s\027[m", + "\027[31m%s\027[m", + "\027[36m%s\027[m", + "\027[34m%s\027[m", + "\027[34m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", + "\027[35m%s\027[m", +} + +local function colorize_text(s, t) + return s +end + +local function colorize_ansi(s, t) + return format(colortype_ansi[t], s) +end + +local irtype_ansi = setmetatable({}, + { __index = function(tab, t) + local s = colorize_ansi(irtype_text[t], t); tab[t] = s; return s; end }) + +local html_escape = { ["<"] = "<", [">"] = ">", ["&"] = "&", } + +local function colorize_html(s, t) + s = gsub(s, "[<>&]", html_escape) + return format('%s', irtype_text[t], s) +end + +local irtype_html = setmetatable({}, + { __index = function(tab, t) + local s = colorize_html(irtype_text[t], t); tab[t] = s; return s; end }) + +local header_html = [[ + +]] + +local colorize, irtype + +-- Lookup tables to convert some literals into names. +local litname = { + ["SLOAD "] = setmetatable({}, { __index = function(t, mode) + local s = "" + if band(mode, 1) ~= 0 then s = s.."P" end + if band(mode, 2) ~= 0 then s = s.."F" end + if band(mode, 4) ~= 0 then s = s.."T" end + if band(mode, 8) ~= 0 then s = s.."C" end + if band(mode, 16) ~= 0 then s = s.."R" end + if band(mode, 32) ~= 0 then s = s.."I" end + t[mode] = s + return s + end}), + ["XLOAD "] = { [0] = "", "R", "V", "RV", "U", "RU", "VU", "RVU", }, + ["CONV "] = setmetatable({}, { __index = function(t, mode) + local s = irtype[band(mode, 31)] + s = irtype[band(shr(mode, 5), 31)].."."..s + if band(mode, 0x400) ~= 0 then s = s.." trunc" + elseif band(mode, 0x800) ~= 0 then s = s.." sext" end + local c = shr(mode, 14) + if c == 2 then s = s.." index" elseif c == 3 then s = s.." check" end + t[mode] = s + return s + end}), + ["FLOAD "] = vmdef.irfield, + ["FREF "] = vmdef.irfield, + ["FPMATH"] = vmdef.irfpm, +} + +local function ctlsub(c) + if c == "\n" then return "\\n" + elseif c == "\r" then return "\\r" + elseif c == "\t" then return "\\t" + elseif c == "\r" then return "\\r" + else return format("\\%03d", byte(c)) + end +end + +local function fmtfunc(func, pc) + local fi = funcinfo(func, pc) + if fi.loc then + return fi.loc + elseif fi.ffid then + return vmdef.ffnames[fi.ffid] + elseif fi.addr then + return format("C:%x", fi.addr) + else + return "(?)" + end +end + +local function formatk(tr, idx) + local k, t, slot = tracek(tr, idx) + local tn = type(k) + local s + if tn == "number" then + if k == 2^52+2^51 then + s = "bias" + else + s = format("%+.14g", k) + end + elseif tn == "string" then + s = format(#k > 20 and '"%.20s"~' or '"%s"', gsub(k, "%c", ctlsub)) + elseif tn == "function" then + s = fmtfunc(k) + elseif tn == "table" then + s = format("{%p}", k) + elseif tn == "userdata" then + if t == 12 then + s = format("userdata:%p", k) + else + s = format("[%p]", k) + if s == "[0x00000000]" then s = "NULL" end + end + elseif t == 21 then -- int64_t + s = sub(tostring(k), 1, -3) + if sub(s, 1, 1) ~= "-" then s = "+"..s end + else + s = tostring(k) -- For primitives. + end + s = colorize(format("%-4s", s), t) + if slot then + s = format("%s @%d", s, slot) + end + return s +end + +local function printsnap(tr, snap) + local n = 2 + for s=0,snap[1]-1 do + local sn = snap[n] + if shr(sn, 24) == s then + n = n + 1 + local ref = band(sn, 0xffff) - 0x8000 -- REF_BIAS + if ref < 0 then + out:write(formatk(tr, ref)) + elseif band(sn, 0x80000) ~= 0 then -- SNAP_SOFTFPNUM + out:write(colorize(format("%04d/%04d", ref, ref+1), 14)) + else + local m, ot, op1, op2 = traceir(tr, ref) + out:write(colorize(format("%04d", ref), band(ot, 31))) + end + out:write(band(sn, 0x10000) == 0 and " " or "|") -- SNAP_FRAME + else + out:write("---- ") + end + end + out:write("]\n") +end + +-- Dump snapshots (not interleaved with IR). +local function dump_snap(tr) + out:write("---- TRACE ", tr, " snapshots\n") + for i=0,1000000000 do + local snap = tracesnap(tr, i) + if not snap then break end + out:write(format("#%-3d %04d [ ", i, snap[0])) + printsnap(tr, snap) + end +end + +-- Return a register name or stack slot for a rid/sp location. +local function ridsp_name(ridsp) + if not disass then disass = require("jit.dis_"..jit.arch) end + local rid = band(ridsp, 0xff) + if ridsp > 255 then return format("[%x]", shr(ridsp, 8)*4) end + if rid < 128 then return disass.regname(rid) end + return "" +end + +-- Dump CALL* function ref and return optional ctype. +local function dumpcallfunc(tr, ins) + local ctype + if ins > 0 then + local m, ot, op1, op2 = traceir(tr, ins) + if band(ot, 31) == 0 then -- nil type means CARG(func, ctype). + ins = op1 + ctype = formatk(tr, op2) + end + end + if ins < 0 then + out:write(format("[0x%x](", tonumber((tracek(tr, ins))))) + else + out:write(format("%04d (", ins)) + end + return ctype +end + +-- Recursively gather CALL* args and dump them. +local function dumpcallargs(tr, ins) + if ins < 0 then + out:write(formatk(tr, ins)) + else + local m, ot, op1, op2 = traceir(tr, ins) + local oidx = 6*shr(ot, 8) + local op = sub(vmdef.irnames, oidx+1, oidx+6) + if op == "CARG " then + dumpcallargs(tr, op1) + if op2 < 0 then + out:write(" ", formatk(tr, op2)) + else + out:write(" ", format("%04d", op2)) + end + else + out:write(format("%04d", ins)) + end + end +end + +-- Dump IR and interleaved snapshots. +local function dump_ir(tr, dumpsnap, dumpreg) + local info = traceinfo(tr) + if not info then return end + local nins = info.nins + out:write("---- TRACE ", tr, " IR\n") + local irnames = vmdef.irnames + local snapref = 65536 + local snap, snapno + if dumpsnap then + snap = tracesnap(tr, 0) + snapref = snap[0] + snapno = 0 + end + for ins=1,nins do + if ins >= snapref then + if dumpreg then + out:write(format(".... SNAP #%-3d [ ", snapno)) + else + out:write(format(".... SNAP #%-3d [ ", snapno)) + end + printsnap(tr, snap) + snapno = snapno + 1 + snap = tracesnap(tr, snapno) + snapref = snap and snap[0] or 65536 + end + local m, ot, op1, op2, ridsp = traceir(tr, ins) + local oidx, t = 6*shr(ot, 8), band(ot, 31) + local op = sub(irnames, oidx+1, oidx+6) + if op == "LOOP " then + if dumpreg then + out:write(format("%04d ------------ LOOP ------------\n", ins)) + else + out:write(format("%04d ------ LOOP ------------\n", ins)) + end + elseif op ~= "NOP " and op ~= "CARG " and + (dumpreg or op ~= "RENAME") then + if dumpreg then + out:write(format("%04d %-5s ", ins, ridsp_name(ridsp))) + else + out:write(format("%04d ", ins)) + end + out:write(format("%s%s %s %s ", + band(ot, 128) == 0 and " " or ">", + band(ot, 64) == 0 and " " or "+", + irtype[t], op)) + local m1, m2 = band(m, 3), band(m, 3*4) + if sub(op, 1, 4) == "CALL" then + local ctype + if m2 == 1*4 then -- op2 == IRMlit + out:write(format("%-10s (", vmdef.ircall[op2])) + else + ctype = dumpcallfunc(tr, op2) + end + if op1 ~= -1 then dumpcallargs(tr, op1) end + out:write(")") + if ctype then out:write(" ctype ", ctype) end + elseif op == "CNEW " and op2 == -1 then + out:write(formatk(tr, op1)) + elseif m1 ~= 3 then -- op1 != IRMnone + if op1 < 0 then + out:write(formatk(tr, op1)) + else + out:write(format(m1 == 0 and "%04d" or "#%-3d", op1)) + end + if m2 ~= 3*4 then -- op2 != IRMnone + if m2 == 1*4 then -- op2 == IRMlit + local litn = litname[op] + if litn and litn[op2] then + out:write(" ", litn[op2]) + elseif op == "UREFO " or op == "UREFC " then + out:write(format(" #%-3d", shr(op2, 8))) + else + out:write(format(" #%-3d", op2)) + end + elseif op2 < 0 then + out:write(" ", formatk(tr, op2)) + else + out:write(format(" %04d", op2)) + end + end + end + out:write("\n") + end + end + if snap then + if dumpreg then + out:write(format(".... SNAP #%-3d [ ", snapno)) + else + out:write(format(".... SNAP #%-3d [ ", snapno)) + end + printsnap(tr, snap) + end +end + +------------------------------------------------------------------------------ + +local recprefix = "" +local recdepth = 0 + +-- Format trace error message. +local function fmterr(err, info) + if type(err) == "number" then + if type(info) == "function" then info = fmtfunc(info) end + err = format(vmdef.traceerr[err], info) + end + return err +end + +-- Dump trace states. +local function dump_trace(what, tr, func, pc, otr, oex) + if what == "stop" or (what == "abort" and dumpmode.a) then + if dumpmode.i then dump_ir(tr, dumpmode.s, dumpmode.r and what == "stop") + elseif dumpmode.s then dump_snap(tr) end + if dumpmode.m then dump_mcode(tr) end + end + if what == "start" then + if dumpmode.H then out:write('
\n') end + out:write("---- TRACE ", tr, " ", what) + if otr then out:write(" ", otr, "/", oex) end + out:write(" ", fmtfunc(func, pc), "\n") + recprefix = "" + elseif what == "stop" or what == "abort" then + out:write("---- TRACE ", tr, " ", what) + recprefix = nil + if what == "abort" then + out:write(" ", fmtfunc(func, pc), " -- ", fmterr(otr, oex), "\n") + else + local info = traceinfo(tr) + local link, ltype = info.link, info.linktype + if link == tr or link == 0 then + out:write(" -> ", ltype, "\n") + elseif ltype == "root" then + out:write(" -> ", link, "\n") + else + out:write(" -> ", link, " ", ltype, "\n") + end + end + if dumpmode.H then out:write("\n\n") else out:write("\n") end + else + out:write("---- TRACE ", what, "\n\n") + end + out:flush() +end + +-- Dump recorded bytecode. +local function dump_record(tr, func, pc, depth, callee) + if depth ~= recdepth then + recdepth = depth + recprefix = rep(" .", depth) + end + local line + if pc >= 0 then + line = bcline(func, pc, recprefix) + if dumpmode.H then line = gsub(line, "[<>&]", html_escape) end + else + line = "0000 "..recprefix.." FUNCC \n" + callee = func + end + if pc <= 0 then + out:write(sub(line, 1, -2), " ; ", fmtfunc(func), "\n") + else + out:write(line) + end + if pc >= 0 and band(funcbc(func, pc), 0xff) < 16 then -- ORDER BC + out:write(bcline(func, pc+1, recprefix)) -- Write JMP for cond. + end +end + +------------------------------------------------------------------------------ + +-- Dump taken trace exits. +local function dump_texit(tr, ex, ngpr, nfpr, ...) + out:write("---- TRACE ", tr, " exit ", ex, "\n") + if dumpmode.X then + local regs = {...} + if jit.arch == "x64" then + for i=1,ngpr do + out:write(format(" %016x", regs[i])) + if i % 4 == 0 then out:write("\n") end + end + else + for i=1,ngpr do + out:write(format(" %08x", regs[i])) + if i % 8 == 0 then out:write("\n") end + end + end + for i=1,nfpr do + out:write(format(" %+17.14g", regs[ngpr+i])) + if i % 4 == 0 then out:write("\n") end + end + end +end + +------------------------------------------------------------------------------ + +-- Detach dump handlers. +local function dumpoff() + if active then + active = false + jit.attach(dump_texit) + jit.attach(dump_record) + jit.attach(dump_trace) + if out and out ~= stdout and out ~= stderr then out:close() end + out = nil + end +end + +-- Open the output file and attach dump handlers. +local function dumpon(opt, outfile) + if active then dumpoff() end + + local colormode = os.getenv("COLORTERM") and "A" or "T" + if opt then + opt = gsub(opt, "[TAH]", function(mode) colormode = mode; return ""; end) + end + + local m = { t=true, b=true, i=true, m=true, } + if opt and opt ~= "" then + local o = sub(opt, 1, 1) + if o ~= "+" and o ~= "-" then m = {} end + for i=1,#opt do m[sub(opt, i, i)] = (o ~= "-") end + end + dumpmode = m + + if m.t or m.b or m.i or m.s or m.m then + jit.attach(dump_trace, "trace") + end + if m.b then + jit.attach(dump_record, "record") + if not bcline then bcline = require("jit.bc").line end + end + if m.x or m.X then + jit.attach(dump_texit, "texit") + end + + if not outfile then outfile = os.getenv("LUAJIT_DUMPFILE") end + if outfile then + out = outfile == "-" and stdout or assert(io.open(outfile, "w")) + else + out = stdout + end + + m[colormode] = true + if colormode == "A" then + colorize = colorize_ansi + irtype = irtype_ansi + elseif colormode == "H" then + colorize = colorize_html + irtype = irtype_html + out:write(header_html) + else + colorize = colorize_text + irtype = irtype_text + end + + active = true +end + +-- Public module functions. +module(...) + +on = dumpon +off = dumpoff +start = dumpon -- For -j command line option. + -- cgit v1.1