submodule LuaJIT; build libs through Makefile

1 files changed, 0 insertions, 1166 deletions

diff --git a/lib/LuaJIT/dynasm/dasm_arm64.lua b/lib/LuaJIT/dynasm/dasm_arm64.lua
deleted file mode 100644
index 8a5f735..0000000
--- a/lib/LuaJIT/dynasm/dasm_arm64.lua
+++ /dev/null
@@ -1,1166 +0,0 @@
-------------------------------------------------------------------------------
--- DynASM ARM64 module.
---
--- Copyright (C) 2005-2017 Mike Pall. All rights reserved.
--- See dynasm.lua for full copyright notice.
-------------------------------------------------------------------------------
-
--- Module information:
-local _info = {
-  arch =	"arm",
-  description =	"DynASM ARM64 module",
-  version =	"1.4.0",
-  vernum =	 10400,
-  release =	"2015-10-18",
-  author =	"Mike Pall",
-  license =	"MIT",
-}
-
--- Exported glue functions for the arch-specific module.
-local _M = { _info = _info }
-
--- Cache library functions.
-local type, tonumber, pairs, ipairs = type, tonumber, pairs, ipairs
-local assert, setmetatable, rawget = assert, setmetatable, rawget
-local _s = string
-local sub, format, byte, char = _s.sub, _s.format, _s.byte, _s.char
-local match, gmatch, gsub = _s.match, _s.gmatch, _s.gsub
-local concat, sort, insert = table.concat, table.sort, table.insert
-local bit = bit or require("bit")
-local band, shl, shr, sar = bit.band, bit.lshift, bit.rshift, bit.arshift
-local ror, tohex = bit.ror, bit.tohex
-
--- Inherited tables and callbacks.
-local g_opt, g_arch
-local wline, werror, wfatal, wwarn
-
--- Action name list.
--- CHECK: Keep this in sync with the C code!
-local action_names = {
-  "STOP", "SECTION", "ESC", "REL_EXT",
-  "ALIGN", "REL_LG", "LABEL_LG",
-  "REL_PC", "LABEL_PC", "IMM", "IMM6", "IMM12", "IMM13W", "IMM13X", "IMML",
-}
-
--- Maximum number of section buffer positions for dasm_put().
--- CHECK: Keep this in sync with the C code!
-local maxsecpos = 25 -- Keep this low, to avoid excessively long C lines.
-
--- Action name -> action number.
-local map_action = {}
-for n,name in ipairs(action_names) do
-  map_action[name] = n-1
-end
-
--- Action list buffer.
-local actlist = {}
-
--- Argument list for next dasm_put(). Start with offset 0 into action list.
-local actargs = { 0 }
-
--- Current number of section buffer positions for dasm_put().
-local secpos = 1
-
-------------------------------------------------------------------------------
-
--- Dump action names and numbers.
-local function dumpactions(out)
-  out:write("DynASM encoding engine action codes:\n")
-  for n,name in ipairs(action_names) do
-    local num = map_action[name]
-    out:write(format("  %-10s %02X  %d\n", name, num, num))
-  end
-  out:write("\n")
-end
-
--- Write action list buffer as a huge static C array.
-local function writeactions(out, name)
-  local nn = #actlist
-  if nn == 0 then nn = 1; actlist[0] = map_action.STOP end
-  out:write("static const unsigned int ", name, "[", nn, "] = {\n")
-  for i = 1,nn-1 do
-    assert(out:write("0x", tohex(actlist[i]), ",\n"))
-  end
-  assert(out:write("0x", tohex(actlist[nn]), "\n};\n\n"))
-end
-
-------------------------------------------------------------------------------
-
--- Add word to action list.
-local function wputxw(n)
-  assert(n >= 0 and n <= 0xffffffff and n % 1 == 0, "word out of range")
-  actlist[#actlist+1] = n
-end
-
--- Add action to list with optional arg. Advance buffer pos, too.
-local function waction(action, val, a, num)
-  local w = assert(map_action[action], "bad action name `"..action.."'")
-  wputxw(w * 0x10000 + (val or 0))
-  if a then actargs[#actargs+1] = a end
-  if a or num then secpos = secpos + (num or 1) end
-end
-
--- Flush action list (intervening C code or buffer pos overflow).
-local function wflush(term)
-  if #actlist == actargs[1] then return end -- Nothing to flush.
-  if not term then waction("STOP") end -- Terminate action list.
-  wline(format("dasm_put(Dst, %s);", concat(actargs, ", ")), true)
-  actargs = { #actlist } -- Actionlist offset is 1st arg to next dasm_put().
-  secpos = 1 -- The actionlist offset occupies a buffer position, too.
-end
-
--- Put escaped word.
-local function wputw(n)
-  if n <= 0x000fffff then waction("ESC") end
-  wputxw(n)
-end
-
--- Reserve position for word.
-local function wpos()
-  local pos = #actlist+1
-  actlist[pos] = ""
-  return pos
-end
-
--- Store word to reserved position.
-local function wputpos(pos, n)
-  assert(n >= 0 and n <= 0xffffffff and n % 1 == 0, "word out of range")
-  if n <= 0x000fffff then
-    insert(actlist, pos+1, n)
-    n = map_action.ESC * 0x10000
-  end
-  actlist[pos] = n
-end
-
-------------------------------------------------------------------------------
-
--- Global label name -> global label number. With auto assignment on 1st use.
-local next_global = 20
-local map_global = setmetatable({}, { __index = function(t, name)
-  if not match(name, "^[%a_][%w_]*$") then werror("bad global label") end
-  local n = next_global
-  if n > 2047 then werror("too many global labels") end
-  next_global = n + 1
-  t[name] = n
-  return n
-end})
-
--- Dump global labels.
-local function dumpglobals(out, lvl)
-  local t = {}
-  for name, n in pairs(map_global) do t[n] = name end
-  out:write("Global labels:\n")
-  for i=20,next_global-1 do
-    out:write(format("  %s\n", t[i]))
-  end
-  out:write("\n")
-end
-
--- Write global label enum.
-local function writeglobals(out, prefix)
-  local t = {}
-  for name, n in pairs(map_global) do t[n] = name end
-  out:write("enum {\n")
-  for i=20,next_global-1 do
-    out:write("  ", prefix, t[i], ",\n")
-  end
-  out:write("  ", prefix, "_MAX\n};\n")
-end
-
--- Write global label names.
-local function writeglobalnames(out, name)
-  local t = {}
-  for name, n in pairs(map_global) do t[n] = name end
-  out:write("static const char *const ", name, "[] = {\n")
-  for i=20,next_global-1 do
-    out:write("  \"", t[i], "\",\n")
-  end
-  out:write("  (const char *)0\n};\n")
-end
-
-------------------------------------------------------------------------------
-
--- Extern label name -> extern label number. With auto assignment on 1st use.
-local next_extern = 0
-local map_extern_ = {}
-local map_extern = setmetatable({}, { __index = function(t, name)
-  -- No restrictions on the name for now.
-  local n = next_extern
-  if n > 2047 then werror("too many extern labels") end
-  next_extern = n + 1
-  t[name] = n
-  map_extern_[n] = name
-  return n
-end})
-
--- Dump extern labels.
-local function dumpexterns(out, lvl)
-  out:write("Extern labels:\n")
-  for i=0,next_extern-1 do
-    out:write(format("  %s\n", map_extern_[i]))
-  end
-  out:write("\n")
-end
-
--- Write extern label names.
-local function writeexternnames(out, name)
-  out:write("static const char *const ", name, "[] = {\n")
-  for i=0,next_extern-1 do
-    out:write("  \"", map_extern_[i], "\",\n")
-  end
-  out:write("  (const char *)0\n};\n")
-end
-
-------------------------------------------------------------------------------
-
--- Arch-specific maps.
-
--- Ext. register name -> int. name.
-local map_archdef = { xzr = "@x31", wzr = "@w31", lr = "x30", }
-
--- Int. register name -> ext. name.
-local map_reg_rev = { ["@x31"] = "xzr", ["@w31"] = "wzr", x30 = "lr", }
-
-local map_type = {}		-- Type name -> { ctype, reg }
-local ctypenum = 0		-- Type number (for Dt... macros).
-
--- Reverse defines for registers.
-function _M.revdef(s)
-  return map_reg_rev[s] or s
-end
-
-local map_shift = { lsl = 0, lsr = 1, asr = 2, }
-
-local map_extend = {
-  uxtb = 0, uxth = 1, uxtw = 2, uxtx = 3,
-  sxtb = 4, sxth = 5, sxtw = 6, sxtx = 7,
-}
-
-local map_cond = {
-  eq = 0, ne = 1, cs = 2, cc = 3, mi = 4, pl = 5, vs = 6, vc = 7,
-  hi = 8, ls = 9, ge = 10, lt = 11, gt = 12, le = 13, al = 14,
-  hs = 2, lo = 3,
-}
-
-------------------------------------------------------------------------------
-
-local parse_reg_type
-
-local function parse_reg(expr)
-  if not expr then werror("expected register name") end
-  local tname, ovreg = match(expr, "^([%w_]+):(@?%l%d+)$")
-  local tp = map_type[tname or expr]
-  if tp then
-    local reg = ovreg or tp.reg
-    if not reg then
-      werror("type `"..(tname or expr).."' needs a register override")
-    end
-    expr = reg
-  end
-  local ok31, rt, r = match(expr, "^(@?)([xwqdshb])([123]?[0-9])$")
-  if r then
-    r = tonumber(r)
-    if r <= 30 or (r == 31 and ok31 ~= "" or (rt ~= "w" and rt ~= "x")) then
-      if not parse_reg_type then
-	parse_reg_type = rt
-      elseif parse_reg_type ~= rt then
-	werror("register size mismatch")
-      end
-      return r, tp
-    end
-  end
-  werror("bad register name `"..expr.."'")
-end
-
-local function parse_reg_base(expr)
-  if expr == "sp" then return 0x3e0 end
-  local base, tp = parse_reg(expr)
-  if parse_reg_type ~= "x" then werror("bad register type") end
-  parse_reg_type = false
-  return shl(base, 5), tp
-end
-
-local parse_ctx = {}
-
-local loadenv = setfenv and function(s)
-  local code = loadstring(s, "")
-  if code then setfenv(code, parse_ctx) end
-  return code
-end or function(s)
-  return load(s, "", nil, parse_ctx)
-end
-
--- Try to parse simple arithmetic, too, since some basic ops are aliases.
-local function parse_number(n)
-  local x = tonumber(n)
-  if x then return x end
-  local code = loadenv("return "..n)
-  if code then
-    local ok, y = pcall(code)
-    if ok then return y end
-  end
-  return nil
-end
-
-local function parse_imm(imm, bits, shift, scale, signed)
-  imm = match(imm, "^#(.*)$")
-  if not imm then werror("expected immediate operand") end
-  local n = parse_number(imm)
-  if n then
-    local m = sar(n, scale)
-    if shl(m, scale) == n then
-      if signed then
-	local s = sar(m, bits-1)
-	if s == 0 then return shl(m, shift)
-	elseif s == -1 then return shl(m + shl(1, bits), shift) end
-      else
-	if sar(m, bits) == 0 then return shl(m, shift) end
-      end
-    end
-    werror("out of range immediate `"..imm.."'")
-  else
-    waction("IMM", (signed and 32768 or 0)+scale*1024+bits*32+shift, imm)
-    return 0
-  end
-end
-
-local function parse_imm12(imm)
-  imm = match(imm, "^#(.*)$")
-  if not imm then werror("expected immediate operand") end
-  local n = parse_number(imm)
-  if n then
-    if shr(n, 12) == 0 then
-      return shl(n, 10)
-    elseif band(n, 0xff000fff) == 0 then
-      return shr(n, 2) + 0x00400000
-    end
-    werror("out of range immediate `"..imm.."'")
-  else
-    waction("IMM12", 0, imm)
-    return 0
-  end
-end
-
-local function parse_imm13(imm)
-  imm = match(imm, "^#(.*)$")
-  if not imm then werror("expected immediate operand") end
-  local n = parse_number(imm)
-  local r64 = parse_reg_type == "x"
-  if n and n % 1 == 0 and n >= 0 and n <= 0xffffffff then
-    local inv = false
-    if band(n, 1) == 1 then n = bit.bnot(n); inv = true end
-    local t = {}
-    for i=1,32 do t[i] = band(n, 1); n = shr(n, 1) end
-    local b = table.concat(t)
-    b = b..(r64 and (inv and "1" or "0"):rep(32) or b)
-    local p0, p1, p0a, p1a = b:match("^(0+)(1+)(0*)(1*)")
-    if p0 then
-      local w = p1a == "" and (r64 and 64 or 32) or #p1+#p0a
-      if band(w, w-1) == 0 and b == b:sub(1, w):rep(64/w) then
-	local s = band(-2*w, 0x3f) - 1
-	if w == 64 then s = s + 0x1000 end
-	if inv then
-	  return shl(w-#p1-#p0, 16) + shl(s+w-#p1, 10)
-	else
-	  return shl(w-#p0, 16) + shl(s+#p1, 10)
-	end
-      end
-    end
-    werror("out of range immediate `"..imm.."'")
-  elseif r64 then
-    waction("IMM13X", 0, format("(unsigned int)(%s)", imm))
-    actargs[#actargs+1] = format("(unsigned int)((unsigned long long)(%s)>>32)", imm)
-    return 0
-  else
-    waction("IMM13W", 0, imm)
-    return 0
-  end
-end
-
-local function parse_imm6(imm)
-  imm = match(imm, "^#(.*)$")
-  if not imm then werror("expected immediate operand") end
-  local n = parse_number(imm)
-  if n then
-    if n >= 0 and n <= 63 then
-      return shl(band(n, 0x1f), 19) + (n >= 32 and 0x80000000 or 0)
-    end
-    werror("out of range immediate `"..imm.."'")
-  else
-    waction("IMM6", 0, imm)
-    return 0
-  end
-end
-
-local function parse_imm_load(imm, scale)
-  local n = parse_number(imm)
-  if n then
-    local m = sar(n, scale)
-    if shl(m, scale) == n and m >= 0 and m < 0x1000 then
-      return shl(m, 10) + 0x01000000 -- Scaled, unsigned 12 bit offset.
-    elseif n >= -256 and n < 256 then
-      return shl(band(n, 511), 12) -- Unscaled, signed 9 bit offset.
-    end
-    werror("out of range immediate `"..imm.."'")
-  else
-    waction("IMML", 0, imm)
-    return 0
-  end
-end
-
-local function parse_fpimm(imm)
-  imm = match(imm, "^#(.*)$")
-  if not imm then werror("expected immediate operand") end
-  local n = parse_number(imm)
-  if n then
-    local m, e = math.frexp(n)
-    local s, e2 = 0, band(e-2, 7)
-    if m < 0 then m = -m; s = 0x00100000 end
-    m = m*32-16
-    if m % 1 == 0 and m >= 0 and m <= 15 and sar(shl(e2, 29), 29)+2 == e then
-      return s + shl(e2, 17) + shl(m, 13)
-    end
-    werror("out of range immediate `"..imm.."'")
-  else
-    werror("NYI fpimm action")
-  end
-end
-
-local function parse_shift(expr)
-  local s, s2 = match(expr, "^(%S+)%s*(.*)$")
-  s = map_shift[s]
-  if not s then werror("expected shift operand") end
-  return parse_imm(s2, 6, 10, 0, false) + shl(s, 22)
-end
-
-local function parse_lslx16(expr)
-  local n = match(expr, "^lsl%s*#(%d+)$")
-  n = tonumber(n)
-  if not n then werror("expected shift operand") end
-  if band(n, parse_reg_type == "x" and 0xffffffcf or 0xffffffef) ~= 0 then
-    werror("bad shift amount")
-  end
-  return shl(n, 17)
-end
-
-local function parse_extend(expr)
-  local s, s2 = match(expr, "^(%S+)%s*(.*)$")
-  if s == "lsl" then
-    s = parse_reg_type == "x" and 3 or 2
-  else
-    s = map_extend[s]
-  end
-  if not s then werror("expected extend operand") end
-  return (s2 == "" and 0 or parse_imm(s2, 3, 10, 0, false)) + shl(s, 13)
-end
-
-local function parse_cond(expr, inv)
-  local c = map_cond[expr]
-  if not c then werror("expected condition operand") end
-  return shl(bit.bxor(c, inv), 12)
-end
-
-local function parse_load(params, nparams, n, op)
-  if params[n+2] then werror("too many operands") end
-  local pn, p2 = params[n], params[n+1]
-  local p1, wb = match(pn, "^%[%s*(.-)%s*%](!?)$")
-  if not p1 then
-    if not p2 then
-      local reg, tailr = match(pn, "^([%w_:]+)%s*(.*)$")
-      if reg and tailr ~= "" then
-	local base, tp = parse_reg_base(reg)
-	if tp then
-	  waction("IMML", 0, format(tp.ctypefmt, tailr))
-	  return op + base
-	end
-      end
-    end
-    werror("expected address operand")
-  end
-  local scale = shr(op, 30)
-  if p2 then
-    if wb == "!" then werror("bad use of '!'") end
-    op = op + parse_reg_base(p1) + parse_imm(p2, 9, 12, 0, true) + 0x400
-  elseif wb == "!" then
-    local p1a, p2a = match(p1, "^([^,%s]*)%s*,%s*(.*)$")
-    if not p1a then werror("bad use of '!'") end
-    op = op + parse_reg_base(p1a) + parse_imm(p2a, 9, 12, 0, true) + 0xc00
-  else
-    local p1a, p2a = match(p1, "^([^,%s]*)%s*(.*)$")
-    op = op + parse_reg_base(p1a)
-    if p2a ~= "" then
-      local imm = match(p2a, "^,%s*#(.*)$")
-      if imm then
-	op = op + parse_imm_load(imm, scale)
-      else
-	local p2b, p3b, p3s = match(p2a, "^,%s*([^,%s]*)%s*,?%s*(%S*)%s*(.*)$")
-	op = op + shl(parse_reg(p2b), 16) + 0x00200800
-	if parse_reg_type ~= "x" and parse_reg_type ~= "w" then
-	  werror("bad index register type")
-	end
-	if p3b == "" then
-	  if parse_reg_type ~= "x" then werror("bad index register type") end
-	  op = op + 0x6000
-	else
-	  if p3s == "" or p3s == "#0" then
-	  elseif p3s == "#"..scale then
-	    op = op + 0x1000
-	  else
-	    werror("bad scale")
-	  end
-	  if parse_reg_type == "x" then
-	    if p3b == "lsl" and p3s ~= "" then op = op + 0x6000
-	    elseif p3b == "sxtx" then op = op + 0xe000
-	    else
-	      werror("bad extend/shift specifier")
-	    end
-	  else
-	    if p3b == "uxtw" then op = op + 0x4000
-	    elseif p3b == "sxtw" then op = op + 0xc000
-	    else
-	      werror("bad extend/shift specifier")
-	    end
-	  end
-	end
-      end
-    else
-      if wb == "!" then werror("bad use of '!'") end
-      op = op + 0x01000000
-    end
-  end
-  return op
-end
-
-local function parse_load_pair(params, nparams, n, op)
-  if params[n+2] then werror("too many operands") end
-  local pn, p2 = params[n], params[n+1]
-  local scale = shr(op, 30) == 0 and 2 or 3
-  local p1, wb = match(pn, "^%[%s*(.-)%s*%](!?)$")
-  if not p1 then
-    if not p2 then
-      local reg, tailr = match(pn, "^([%w_:]+)%s*(.*)$")
-      if reg and tailr ~= "" then
-	local base, tp = parse_reg_base(reg)
-	if tp then
-	  waction("IMM", 32768+7*32+15+scale*1024, format(tp.ctypefmt, tailr))
-	  return op + base + 0x01000000
-	end
-      end
-    end
-    werror("expected address operand")
-  end
-  if p2 then
-    if wb == "!" then werror("bad use of '!'") end
-    op = op + 0x00800000
-  else
-    local p1a, p2a = match(p1, "^([^,%s]*)%s*,%s*(.*)$")
-    if p1a then p1, p2 = p1a, p2a else p2 = "#0" end
-    op = op + (wb == "!" and 0x01800000 or 0x01000000)
-  end
-  return op + parse_reg_base(p1) + parse_imm(p2, 7, 15, scale, true)
-end
-
-local function parse_label(label, def)
-  local prefix = sub(label, 1, 2)
-  -- =>label (pc label reference)
-  if prefix == "=>" then
-    return "PC", 0, sub(label, 3)
-  end
-  -- ->name (global label reference)
-  if prefix == "->" then
-    return "LG", map_global[sub(label, 3)]
-  end
-  if def then
-    -- [1-9] (local label definition)
-    if match(label, "^[1-9]$") then
-      return "LG", 10+tonumber(label)
-    end
-  else
-    -- [<>][1-9] (local label reference)
-    local dir, lnum = match(label, "^([<>])([1-9])$")
-    if dir then -- Fwd: 1-9, Bkwd: 11-19.
-      return "LG", lnum + (dir == ">" and 0 or 10)
-    end
-    -- extern label (extern label reference)
-    local extname = match(label, "^extern%s+(%S+)$")
-    if extname then
-      return "EXT", map_extern[extname]
-    end
-  end
-  werror("bad label `"..label.."'")
-end
-
-local function branch_type(op)
-  if band(op, 0x7c000000) == 0x14000000 then return 0 -- B, BL
-  elseif shr(op, 24) == 0x54 or band(op, 0x7e000000) == 0x34000000 or
-	 band(op, 0x3b000000) == 0x18000000 then
-    return 0x800 -- B.cond, CBZ, CBNZ, LDR* literal
-  elseif band(op, 0x7e000000) == 0x36000000 then return 0x1000 -- TBZ, TBNZ
-  elseif band(op, 0x9f000000) == 0x10000000 then return 0x2000 -- ADR
-  elseif band(op, 0x9f000000) == band(0x90000000) then return 0x3000 -- ADRP
-  else
-    assert(false, "unknown branch type")
-  end
-end
-
-------------------------------------------------------------------------------
-
-local map_op, op_template
-
-local function op_alias(opname, f)
-  return function(params, nparams)
-    if not params then return "-> "..opname:sub(1, -3) end
-    f(params, nparams)
-    op_template(params, map_op[opname], nparams)
-  end
-end
-
-local function alias_bfx(p)
-  p[4] = "#("..p[3]:sub(2)..")+("..p[4]:sub(2)..")-1"
-end
-
-local function alias_bfiz(p)
-  parse_reg(p[1])
-  if parse_reg_type == "w" then
-    p[3] = "#-("..p[3]:sub(2)..")%32"
-    p[4] = "#("..p[4]:sub(2)..")-1"
-  else
-    p[3] = "#-("..p[3]:sub(2)..")%64"
-    p[4] = "#("..p[4]:sub(2)..")-1"
-  end
-end
-
-local alias_lslimm = op_alias("ubfm_4", function(p)
-  parse_reg(p[1])
-  local sh = p[3]:sub(2)
-  if parse_reg_type == "w" then
-    p[3] = "#-("..sh..")%32"
-    p[4] = "#31-("..sh..")"
-  else
-    p[3] = "#-("..sh..")%64"
-    p[4] = "#63-("..sh..")"
-  end
-end)
-
--- Template strings for ARM instructions.
-map_op = {
-  -- Basic data processing instructions.
-  add_3  = "0b000000DNMg|11000000pDpNIg|8b206000pDpNMx",
-  add_4  = "0b000000DNMSg|0b200000DNMXg|8b200000pDpNMXx|8b200000pDpNxMwX",
-  adds_3 = "2b000000DNMg|31000000DpNIg|ab206000DpNMx",
-  adds_4 = "2b000000DNMSg|2b200000DNMXg|ab200000DpNMXx|ab200000DpNxMwX",
-  cmn_2  = "2b00001fNMg|3100001fpNIg|ab20601fpNMx",
-  cmn_3  = "2b00001fNMSg|2b20001fNMXg|ab20001fpNMXx|ab20001fpNxMwX",
-
-  sub_3  = "4b000000DNMg|51000000pDpNIg|cb206000pDpNMx",
-  sub_4  = "4b000000DNMSg|4b200000DNMXg|cb200000pDpNMXx|cb200000pDpNxMwX",
-  subs_3 = "6b000000DNMg|71000000DpNIg|eb206000DpNMx",
-  subs_4 = "6b000000DNMSg|6b200000DNMXg|eb200000DpNMXx|eb200000DpNxMwX",
-  cmp_2  = "6b00001fNMg|7100001fpNIg|eb20601fpNMx",
-  cmp_3  = "6b00001fNMSg|6b20001fNMXg|eb20001fpNMXx|eb20001fpNxMwX",
-
-  neg_2  = "4b0003e0DMg",
-  neg_3  = "4b0003e0DMSg",
-  negs_2 = "6b0003e0DMg",
-  negs_3 = "6b0003e0DMSg",
-
-  adc_3  = "1a000000DNMg",
-  adcs_3 = "3a000000DNMg",
-  sbc_3  = "5a000000DNMg",
-  sbcs_3 = "7a000000DNMg",
-  ngc_2  = "5a0003e0DMg",
-  ngcs_2 = "7a0003e0DMg",
-
-  and_3  = "0a000000DNMg|12000000pDNig",
-  and_4  = "0a000000DNMSg",
-  orr_3  = "2a000000DNMg|32000000pDNig",
-  orr_4  = "2a000000DNMSg",
-  eor_3  = "4a000000DNMg|52000000pDNig",
-  eor_4  = "4a000000DNMSg",
-  ands_3 = "6a000000DNMg|72000000DNig",
-  ands_4 = "6a000000DNMSg",
-  tst_2  = "6a00001fNMg|7200001fNig",
-  tst_3  = "6a00001fNMSg",
-
-  bic_3  = "0a200000DNMg",
-  bic_4  = "0a200000DNMSg",
-  orn_3  = "2a200000DNMg",
-  orn_4  = "2a200000DNMSg",
-  eon_3  = "4a200000DNMg",
-  eon_4  = "4a200000DNMSg",
-  bics_3 = "6a200000DNMg",
-  bics_4 = "6a200000DNMSg",
-
-  movn_2 = "12800000DWg",
-  movn_3 = "12800000DWRg",
-  movz_2 = "52800000DWg",
-  movz_3 = "52800000DWRg",
-  movk_2 = "72800000DWg",
-  movk_3 = "72800000DWRg",
-
-  -- TODO: this doesn't cover all valid immediates for mov reg, #imm.
-  mov_2  = "2a0003e0DMg|52800000DW|320003e0pDig|11000000pDpNg",
-  mov_3  = "2a0003e0DMSg",
-  mvn_2  = "2a2003e0DMg",
-  mvn_3  = "2a2003e0DMSg",
-
-  adr_2  = "10000000DBx",
-  adrp_2 = "90000000DBx",
-
-  csel_4  = "1a800000DNMCg",
-  csinc_4 = "1a800400DNMCg",
-  csinv_4 = "5a800000DNMCg",
-  csneg_4 = "5a800400DNMCg",
-  cset_2  = "1a9f07e0Dcg",
-  csetm_2 = "5a9f03e0Dcg",
-  cinc_3  = "1a800400DNmcg",
-  cinv_3  = "5a800000DNmcg",
-  cneg_3  = "5a800400DNmcg",
-
-  ccmn_4 = "3a400000NMVCg|3a400800N5VCg",
-  ccmp_4 = "7a400000NMVCg|7a400800N5VCg",
-
-  madd_4 = "1b000000DNMAg",
-  msub_4 = "1b008000DNMAg",
-  mul_3  = "1b007c00DNMg",
-  mneg_3 = "1b00fc00DNMg",
-
-  smaddl_4 = "9b200000DxNMwAx",
-  smsubl_4 = "9b208000DxNMwAx",
-  smull_3  = "9b207c00DxNMw",
-  smnegl_3 = "9b20fc00DxNMw",
-  smulh_3  = "9b407c00DNMx",
-  umaddl_4 = "9ba00000DxNMwAx",
-  umsubl_4 = "9ba08000DxNMwAx",
-  umull_3  = "9ba07c00DxNMw",
-  umnegl_3 = "9ba0fc00DxNMw",
-  umulh_3  = "9bc07c00DNMx",
-
-  udiv_3 = "1ac00800DNMg",
-  sdiv_3 = "1ac00c00DNMg",
-
-  -- Bit operations.
-  sbfm_4 = "13000000DN12w|93400000DN12x",
-  bfm_4  = "33000000DN12w|b3400000DN12x",
-  ubfm_4 = "53000000DN12w|d3400000DN12x",
-  extr_4 = "13800000DNM2w|93c00000DNM2x",
-
-  sxtb_2 = "13001c00DNw|93401c00DNx",
-  sxth_2 = "13003c00DNw|93403c00DNx",
-  sxtw_2 = "93407c00DxNw",
-  uxtb_2 = "53001c00DNw",
-  uxth_2 = "53003c00DNw",
-
-  sbfx_4  = op_alias("sbfm_4", alias_bfx),
-  bfxil_4 = op_alias("bfm_4", alias_bfx),
-  ubfx_4  = op_alias("ubfm_4", alias_bfx),
-  sbfiz_4 = op_alias("sbfm_4", alias_bfiz),
-  bfi_4   = op_alias("bfm_4", alias_bfiz),
-  ubfiz_4 = op_alias("ubfm_4", alias_bfiz),
-
-  lsl_3  = function(params, nparams)
-    if params and params[3]:byte() == 35 then
-      return alias_lslimm(params, nparams)
-    else
-      return op_template(params, "1ac02000DNMg", nparams)
-    end
-  end,
-  lsr_3  = "1ac02400DNMg|53007c00DN1w|d340fc00DN1x",
-  asr_3  = "1ac02800DNMg|13007c00DN1w|9340fc00DN1x",
-  ror_3  = "1ac02c00DNMg|13800000DNm2w|93c00000DNm2x",
-
-  clz_2   = "5ac01000DNg",
-  cls_2   = "5ac01400DNg",
-  rbit_2  = "5ac00000DNg",
-  rev_2   = "5ac00800DNw|dac00c00DNx",
-  rev16_2 = "5ac00400DNg",
-  rev32_2 = "dac00800DNx",
-
-  -- Loads and stores.
-  ["strb_*"]  = "38000000DwL",
-  ["ldrb_*"]  = "38400000DwL",
-  ["ldrsb_*"] = "38c00000DwL|38800000DxL",
-  ["strh_*"]  = "78000000DwL",
-  ["ldrh_*"]  = "78400000DwL",
-  ["ldrsh_*"] = "78c00000DwL|78800000DxL",
-  ["str_*"]   = "b8000000DwL|f8000000DxL|bc000000DsL|fc000000DdL",
-  ["ldr_*"]   = "18000000DwB|58000000DxB|1c000000DsB|5c000000DdB|b8400000DwL|f8400000DxL|bc400000DsL|fc400000DdL",
-  ["ldrsw_*"] = "98000000DxB|b8800000DxL",
-  -- NOTE: ldur etc. are handled by ldr et al.
-
-  ["stp_*"]   = "28000000DAwP|a8000000DAxP|2c000000DAsP|6c000000DAdP",
-  ["ldp_*"]   = "28400000DAwP|a8400000DAxP|2c400000DAsP|6c400000DAdP",
-  ["ldpsw_*"] = "68400000DAxP",
-
-  -- Branches.
-  b_1    = "14000000B",
-  bl_1   = "94000000B",
-  blr_1  = "d63f0000Nx",
-  br_1   = "d61f0000Nx",
-  ret_0  = "d65f03c0",
-  ret_1  = "d65f0000Nx",
-  -- b.cond is added below.
-  cbz_2  = "34000000DBg",
-  cbnz_2 = "35000000DBg",
-  tbz_3  = "36000000DTBw|36000000DTBx",
-  tbnz_3 = "37000000DTBw|37000000DTBx",
-
-  -- Miscellaneous instructions.
-  -- TODO: hlt, hvc, smc, svc, eret, dcps[123], drps, mrs, msr
-  -- TODO: sys, sysl, ic, dc, at, tlbi
-  -- TODO: hint, yield, wfe, wfi, sev, sevl
-  -- TODO: clrex, dsb, dmb, isb
-  nop_0  = "d503201f",
-  brk_0  = "d4200000",
-  brk_1  = "d4200000W",
-
-  -- Floating point instructions.
-  fmov_2  = "1e204000DNf|1e260000DwNs|1e270000DsNw|9e660000DxNd|9e670000DdNx|1e201000DFf",
-  fabs_2  = "1e20c000DNf",
-  fneg_2  = "1e214000DNf",
-  fsqrt_2 = "1e21c000DNf",
-
-  fcvt_2  = "1e22c000DdNs|1e624000DsNd",
-
-  -- TODO: half-precision and fixed-point conversions.
-  fcvtas_2 = "1e240000DwNs|9e240000DxNs|1e640000DwNd|9e640000DxNd",
-  fcvtau_2 = "1e250000DwNs|9e250000DxNs|1e650000DwNd|9e650000DxNd",
-  fcvtms_2 = "1e300000DwNs|9e300000DxNs|1e700000DwNd|9e700000DxNd",
-  fcvtmu_2 = "1e310000DwNs|9e310000DxNs|1e710000DwNd|9e710000DxNd",
-  fcvtns_2 = "1e200000DwNs|9e200000DxNs|1e600000DwNd|9e600000DxNd",
-  fcvtnu_2 = "1e210000DwNs|9e210000DxNs|1e610000DwNd|9e610000DxNd",
-  fcvtps_2 = "1e280000DwNs|9e280000DxNs|1e680000DwNd|9e680000DxNd",
-  fcvtpu_2 = "1e290000DwNs|9e290000DxNs|1e690000DwNd|9e690000DxNd",
-  fcvtzs_2 = "1e380000DwNs|9e380000DxNs|1e780000DwNd|9e780000DxNd",
-  fcvtzu_2 = "1e390000DwNs|9e390000DxNs|1e790000DwNd|9e790000DxNd",
-
-  scvtf_2  = "1e220000DsNw|9e220000DsNx|1e620000DdNw|9e620000DdNx",
-  ucvtf_2  = "1e230000DsNw|9e230000DsNx|1e630000DdNw|9e630000DdNx",
-
-  frintn_2 = "1e244000DNf",
-  frintp_2 = "1e24c000DNf",
-  frintm_2 = "1e254000DNf",
-  frintz_2 = "1e25c000DNf",
-  frinta_2 = "1e264000DNf",
-  frintx_2 = "1e274000DNf",
-  frinti_2 = "1e27c000DNf",
-
-  fadd_3   = "1e202800DNMf",
-  fsub_3   = "1e203800DNMf",
-  fmul_3   = "1e200800DNMf",
-  fnmul_3  = "1e208800DNMf",
-  fdiv_3   = "1e201800DNMf",
-
-  fmadd_4  = "1f000000DNMAf",
-  fmsub_4  = "1f008000DNMAf",
-  fnmadd_4 = "1f200000DNMAf",
-  fnmsub_4 = "1f208000DNMAf",
-
-  fmax_3   = "1e204800DNMf",
-  fmaxnm_3 = "1e206800DNMf",
-  fmin_3   = "1e205800DNMf",
-  fminnm_3 = "1e207800DNMf",
-
-  fcmp_2   = "1e202000NMf|1e202008NZf",
-  fcmpe_2  = "1e202010NMf|1e202018NZf",
-
-  fccmp_4  = "1e200400NMVCf",
-  fccmpe_4 = "1e200410NMVCf",
-
-  fcsel_4  = "1e200c00DNMCf",
-
-  -- TODO: crc32*, aes*, sha*, pmull
-  -- TODO: SIMD instructions.
-}
-
-for cond,c in pairs(map_cond) do
-  map_op["b"..cond.."_1"] = tohex(0x54000000+c).."B"
-end
-
-------------------------------------------------------------------------------
-
--- Handle opcodes defined with template strings.
-local function parse_template(params, template, nparams, pos)
-  local op = tonumber(sub(template, 1, 8), 16)
-  local n = 1
-  local rtt = {}
-
-  parse_reg_type = false
-
-  -- Process each character.
-  for p in gmatch(sub(template, 9), ".") do
-    local q = params[n]
-    if p == "D" then
-      op = op + parse_reg(q); n = n + 1
-    elseif p == "N" then
-      op = op + shl(parse_reg(q), 5); n = n + 1
-    elseif p == "M" then
-      op = op + shl(parse_reg(q), 16); n = n + 1
-    elseif p == "A" then
-      op = op + shl(parse_reg(q), 10); n = n + 1
-    elseif p == "m" then
-      op = op + shl(parse_reg(params[n-1]), 16)
-
-    elseif p == "p" then
-      if q == "sp" then params[n] = "@x31" end
-    elseif p == "g" then
-      if parse_reg_type == "x" then
-	op = op + 0x80000000
-      elseif parse_reg_type ~= "w" then
-	werror("bad register type")
-      end
-      parse_reg_type = false
-    elseif p == "f" then
-      if parse_reg_type == "d" then
-	op = op + 0x00400000
-      elseif parse_reg_type ~= "s" then
-	werror("bad register type")
-      end
-      parse_reg_type = false
-    elseif p == "x" or p == "w" or p == "d" or p == "s" then
-      if parse_reg_type ~= p then
-	werror("register size mismatch")
-      end
-      parse_reg_type = false
-
-    elseif p == "L" then
-      op = parse_load(params, nparams, n, op)
-    elseif p == "P" then
-      op = parse_load_pair(params, nparams, n, op)
-
-    elseif p == "B" then
-      local mode, v, s = parse_label(q, false); n = n + 1
-      local m = branch_type(op)
-      waction("REL_"..mode, v+m, s, 1)
-
-    elseif p == "I" then
-      op = op + parse_imm12(q); n = n + 1
-    elseif p == "i" then
-      op = op + parse_imm13(q); n = n + 1
-    elseif p == "W" then
-      op = op + parse_imm(q, 16, 5, 0, false); n = n + 1
-    elseif p == "T" then
-      op = op + parse_imm6(q); n = n + 1
-    elseif p == "1" then
-      op = op + parse_imm(q, 6, 16, 0, false); n = n + 1
-    elseif p == "2" then
-      op = op + parse_imm(q, 6, 10, 0, false); n = n + 1
-    elseif p == "5" then
-      op = op + parse_imm(q, 5, 16, 0, false); n = n + 1
-    elseif p == "V" then
-      op = op + parse_imm(q, 4, 0, 0, false); n = n + 1
-    elseif p == "F" then
-      op = op + parse_fpimm(q); n = n + 1
-    elseif p == "Z" then
-      if q ~= "#0" and q ~= "#0.0" then werror("expected zero immediate") end
-      n = n + 1
-
-    elseif p == "S" then
-      op = op + parse_shift(q); n = n + 1
-    elseif p == "X" then
-      op = op + parse_extend(q); n = n + 1
-    elseif p == "R" then
-      op = op + parse_lslx16(q); n = n + 1
-    elseif p == "C" then
-      op = op + parse_cond(q, 0); n = n + 1
-    elseif p == "c" then
-      op = op + parse_cond(q, 1); n = n + 1
-
-    else
-      assert(false)
-    end
-  end
-  wputpos(pos, op)
-end
-
-function op_template(params, template, nparams)
-  if not params then return template:gsub("%x%x%x%x%x%x%x%x", "") end
-
-  -- Limit number of section buffer positions used by a single dasm_put().
-  -- A single opcode needs a maximum of 3 positions.
-  if secpos+3 > maxsecpos then wflush() end
-  local pos = wpos()
-  local lpos, apos, spos = #actlist, #actargs, secpos
-
-  local ok, err
-  for t in gmatch(template, "[^|]+") do
-    ok, err = pcall(parse_template, params, t, nparams, pos)
-    if ok then return end
-    secpos = spos
-    actlist[lpos+1] = nil
-    actlist[lpos+2] = nil
-    actlist[lpos+3] = nil
-    actargs[apos+1] = nil
-    actargs[apos+2] = nil
-    actargs[apos+3] = nil
-  end
-  error(err, 0)
-end
-
-map_op[".template__"] = op_template
-
-------------------------------------------------------------------------------
-
--- Pseudo-opcode to mark the position where the action list is to be emitted.
-map_op[".actionlist_1"] = function(params)
-  if not params then return "cvar" end
-  local name = params[1] -- No syntax check. You get to keep the pieces.
-  wline(function(out) writeactions(out, name) end)
-end
-
--- Pseudo-opcode to mark the position where the global enum is to be emitted.
-map_op[".globals_1"] = function(params)
-  if not params then return "prefix" end
-  local prefix = params[1] -- No syntax check. You get to keep the pieces.
-  wline(function(out) writeglobals(out, prefix) end)
-end
-
--- Pseudo-opcode to mark the position where the global names are to be emitted.
-map_op[".globalnames_1"] = function(params)
-  if not params then return "cvar" end
-  local name = params[1] -- No syntax check. You get to keep the pieces.
-  wline(function(out) writeglobalnames(out, name) end)
-end
-
--- Pseudo-opcode to mark the position where the extern names are to be emitted.
-map_op[".externnames_1"] = function(params)
-  if not params then return "cvar" end
-  local name = params[1] -- No syntax check. You get to keep the pieces.
-  wline(function(out) writeexternnames(out, name) end)
-end
-
-------------------------------------------------------------------------------
-
--- Label pseudo-opcode (converted from trailing colon form).
-map_op[".label_1"] = function(params)
-  if not params then return "[1-9] | ->global | =>pcexpr" end
-  if secpos+1 > maxsecpos then wflush() end
-  local mode, n, s = parse_label(params[1], true)
-  if mode == "EXT" then werror("bad label definition") end
-  waction("LABEL_"..mode, n, s, 1)
-end
-
-------------------------------------------------------------------------------
-
--- Pseudo-opcodes for data storage.
-map_op[".long_*"] = function(params)
-  if not params then return "imm..." end
-  for _,p in ipairs(params) do
-    local n = tonumber(p)
-    if not n then werror("bad immediate `"..p.."'") end
-    if n < 0 then n = n + 2^32 end
-    wputw(n)
-    if secpos+2 > maxsecpos then wflush() end
-  end
-end
-
--- Alignment pseudo-opcode.
-map_op[".align_1"] = function(params)
-  if not params then return "numpow2" end
-  if secpos+1 > maxsecpos then wflush() end
-  local align = tonumber(params[1])
-  if align then
-    local x = align
-    -- Must be a power of 2 in the range (2 ... 256).
-    for i=1,8 do
-      x = x / 2
-      if x == 1 then
-	waction("ALIGN", align-1, nil, 1) -- Action byte is 2**n-1.
-	return
-      end
-    end
-  end
-  werror("bad alignment")
-end
-
-------------------------------------------------------------------------------
-
--- Pseudo-opcode for (primitive) type definitions (map to C types).
-map_op[".type_3"] = function(params, nparams)
-  if not params then
-    return nparams == 2 and "name, ctype" or "name, ctype, reg"
-  end
-  local name, ctype, reg = params[1], params[2], params[3]
-  if not match(name, "^[%a_][%w_]*$") then
-    werror("bad type name `"..name.."'")
-  end
-  local tp = map_type[name]
-  if tp then
-    werror("duplicate type `"..name.."'")
-  end
-  -- Add #type to defines. A bit unclean to put it in map_archdef.
-  map_archdef["#"..name] = "sizeof("..ctype..")"
-  -- Add new type and emit shortcut define.
-  local num = ctypenum + 1
-  map_type[name] = {
-    ctype = ctype,
-    ctypefmt = format("Dt%X(%%s)", num),
-    reg = reg,
-  }
-  wline(format("#define Dt%X(_V) (int)(ptrdiff_t)&(((%s *)0)_V)", num, ctype))
-  ctypenum = num
-end
-map_op[".type_2"] = map_op[".type_3"]
-
--- Dump type definitions.
-local function dumptypes(out, lvl)
-  local t = {}
-  for name in pairs(map_type) do t[#t+1] = name end
-  sort(t)
-  out:write("Type definitions:\n")
-  for _,name in ipairs(t) do
-    local tp = map_type[name]
-    local reg = tp.reg or ""
-    out:write(format("  %-20s %-20s %s\n", name, tp.ctype, reg))
-  end
-  out:write("\n")
-end
-
-------------------------------------------------------------------------------
-
--- Set the current section.
-function _M.section(num)
-  waction("SECTION", num)
-  wflush(true) -- SECTION is a terminal action.
-end
-
-------------------------------------------------------------------------------
-
--- Dump architecture description.
-function _M.dumparch(out)
-  out:write(format("DynASM %s version %s, released %s\n\n",
-    _info.arch, _info.version, _info.release))
-  dumpactions(out)
-end
-
--- Dump all user defined elements.
-function _M.dumpdef(out, lvl)
-  dumptypes(out, lvl)
-  dumpglobals(out, lvl)
-  dumpexterns(out, lvl)
-end
-
-------------------------------------------------------------------------------
-
--- Pass callbacks from/to the DynASM core.
-function _M.passcb(wl, we, wf, ww)
-  wline, werror, wfatal, wwarn = wl, we, wf, ww
-  return wflush
-end
-
--- Setup the arch-specific module.
-function _M.setup(arch, opt)
-  g_arch, g_opt = arch, opt
-end
-
--- Merge the core maps and the arch-specific maps.
-function _M.mergemaps(map_coreop, map_def)
-  setmetatable(map_op, { __index = map_coreop })
-  setmetatable(map_def, { __index = map_archdef })
-  return map_op, map_def
-end
-
-return _M
-
-------------------------------------------------------------------------------
-