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7a49be07be
mikepaul-LuaJIT/dynasm/dasm_s390x.lua
niravthakkar 7a49be07be Added the required character for encoding 
I have added the number depending on the number of operands, pls check for the ones which access memory.
Also For base register and displacement, should I assume that it will be passed in the same order as it is expected, since I dont have any means to see the output, I am confused a bit for those add modes.
Since we decided to test RR first, thats in progress, but would like to add others as well.
2016-11-29 19:00:28 +05:30

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------------------------------------------------------------------------------
-- DynASM s390x module.
--
-- Copyright (C) 2005-2016 Mike Pall. All rights reserved.
-- See dynasm.lua for full copyright notice.
------------------------------------------------------------------------------
-- Module information:
local _info = {
arch = "s390x",
description = "DynASM s390x 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 <= 0xffffffffffff and n % 1 == 0, "word out of range") -- s390x inst can be 6 bytes
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. --Need to check this as well, not sure how it will work on s390x
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. -- added 2 bytes more since s390x has 6 bytes inst as well
local function wputpos(pos, n)
assert(n >= 0 and n <= 0xffffffffffff 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.
-- TODO: add s390x related register names
-- Ext. register name -> int. name.
--local map_archdef = { xzr = "@x31", wzr = "@w31", lr = "x30", }
local map_archdef = {}
-- Int. register name -> ext. name.
-- local map_reg_rev = { ["@x31"] = "xzr", ["@w31"] = "wzr", x30 = "lr", }
local map_reg_rev = {}
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
-- not sure of these
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 = {
o = 1, h = 2, hle = 3, l = 4,
nhe = 5, lh = 6, ne = 7, e = 8,
nlh = 9, he = 10, nl = 11, le = 12,
nh = 13, no = 14, [""] = 15,
}
------------------------------------------------------------------------------
local parse_reg_type
local function parse_gpr(expr)
-- assuming we get r0-r31 for now
local r = match(expr, "^r([1-3]?[0-9])$")
if r then
r = tonumber(r)
if r <= 31 then return r, tp end
end
werror("bad register name `"..expr.."'")
end
local function parse_fpr(expr)
local r = match(expr, "^f([1-3]?[0-9])$")
if r then
r = tonumber(r)
if r <= 31 then return r end
end
werror("bad register name `"..expr.."'")
end
local function parse_reg_base(expr)
if expr == "sp" then return 0x3e0 end
local base, tp = parse_reg(expr)
if parse_reg_type ~= "x" then werror("bad register type") end
parse_reg_type = false
return shl(base, 5), tp -- why is it shifted not able to make out
end
local parse_ctx = {}
local loadenv = setfenv and function(s)
local code = loadstring(s, "")
if code then setfenv(code, parse_ctx) end
return code
end or function(s)
return load(s, "", nil, parse_ctx)
end
-- Try to parse simple arithmetic, too, since some basic ops are aliases.
local function parse_number(n)
local x = tonumber(n)
if x then return x end
local code = loadenv("return "..n)
if code then
local ok, y = pcall(code)
if ok then return y end
end
return nil
end
local function parse_imm(imm, bits, shift, scale, signed)
imm = match(imm, "^#(.*)$")
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 s390x instructions.
map_op = {
a_4 = "000000005a000000j",
ar_2 = "0000000000001a00g",
ay_5 = "0000e3000000005al",
ag_5 = "0000e30000000008l",
agr_2 = "00000000b9080000h",
agf_5 = "0000e30000000018l",
agfr_2 = "00000000b9180000h",
axbr_2 = "00000000b34a0000h",
adbr_2 = "00000000b31a0000h",
aebr_2 = "00000000b30a0000h",
ah_4 = "000000004a000000j",
ahy_5 = "0000e3000000007al",
afi_3 = "0000c20900000000n",
agfi_3 = "0000c20800000000n",
aih_3 = "0000cc0800000000n",
al_4 = "000000005e000000j",
alr_2 = "0000000000001e00g",
aly_5 = "0000e3000000005el",
alg_5 = "0000e3000000000al",
algr_2 = "00000000b90a0000h",
algf_5 = "0000e3000000001al",
algfr_2 = "00000000b91a0000h",
alfi_3 = "0000c20b00000000n",
algfi_3 = "0000c20a00000000n",
alc_5 = "0000e30000000098l",
alcr_2 = "00000000b9980000h",
alcg_5 = "0000e30000000088l",
alcgr_2 = "00000000b9880000h",
alsih_3 = "0000cc0a00000000n",
alsihn_3 = "0000cc0b00000000n",
axr_2 = "0000000000003600g",
ad_4 = "000000006a000000j",
adr_2 = "0000000000002a00g",
ae_4 = "000000007a000000j",
aer_2 = "0000000000003a00g",
aw_4 = "000000006e000000j",
awr_2 = "0000000000002e00g",
au_4 = "000000007e000000j",
aur_2 = "0000000000003e00g",
n_4 = "0000000054000000j",
nr_2 = "0000000000001400g",
ny_5 = "0000e30000000054l",
ng_5 = "0000e30000000080l",
ngr_2 = "00000000b9800000h",
nihf_3 = "0000c00a00000000n",
nilf_3 = "0000c00b00000000n",
bal_4 = "0000000045000000j",
balr_2 = "000000000000500g",
bas_4 = "000000004d000000j",
basr_2 = "0000000000000d00g",
bassm_2 = "0000000000000c00g",
bsa_2 = "00000000b25a0000h",
bsm_2 = "0000000000000b00g",
bakr_2 = "00000000b2400000h",
bsg_2 = "00000000b2580000h",
bc_4 = "0000000047000000k",
bcr_2 = "000000000000700g",
bct_4 = "0000000046000000j",
bctr_2 = "000000000000600g",
bctg_5 = "0000e30000000046l",
bctgr_2 = "00000000b9460000h",
bxh_4 = "0000000086000000q",
bxhg_5 = "0000eb0000000044s",
bxle_4 = "0000000087000000q",
bxleg_5 = "0000eb0000000045s",
brasl_3 = "0000c00500000000o",
brcl_3 = "0000c00400000000p",
brcth_3 = "0000cc0600000000o",
cksm_2 = "00000000b2410000h",
km_2 = "00000000b92e0000h",
kmf_2 = "00000000b92a0000h",
kmc_2 = "00000000b92f0000h",
kmo_2 = "00000000b92b0000h",
c_4 = "0000000059000000j",
cr_2 = "0000000000001900g",
cy_5 = "0000e30000000059l",
cg_5 = "0000e30000000020l",
cgr_2 = "00000000b9200000h",
cgf_5 = "0000e30000000030l",
cgfr_2 = "00000000b9300000h",
cxbr_2 = "00000000b3490000h",
cxtr_2 = "00000000b3ec0000h",
cxr_2 = "00000000b3690000h",
cdbr_2 = "00000000b3190000h",
cdtr_2 = "00000000b3e40000h",
cd_4 = "0000000069000000j",
cdr_2 = "0000000000002900g",
cebr_2 = "00000000b3090000h",
ce_4 = "0000000079000000j",
cer_2 = "0000000000003900g",
kxbr_2 = "00000000b3480000h",
kxtr_2 = "00000000b3e80000h",
kdbr_2 = "00000000b3180000h",
kdtr_2 = "00000000b3e00000h",
kebr_2 = "00000000b3080000h",
cs_4 = "00000000ba000000q",
csy_5 = "0000eb0000000014s",
csg_5 = "0000eb0000000030s",
csp_2 = "00000000b2500000h",
cspg_2 = "00000000b98a0000h",
cextr_2 = "00000000b3fc0000h",
cedtr_2 = "00000000b3f40000h",
cds_4 = "00000000bb000000q",
cdsy_5 = "0000eb0000000031s",
cdsg_5 = "0000eb000000003es",
ch_4 = "0000000049000000j",
chy_5 = "0000e30000000079l",
cgh_5 = "0000e30000000034l",
chrl_3 = "0000c60500000000o",
cghrl_3 = "0000c60400000000o",
chf_5 = "0000e300000000cdl",
chhr_2 = "00000000b9cd0000h",
chlr_2 = "00000000b9dd0000h",
cfi_3 = "0000c20d00000000n",
cgfi_3 = "0000c20c00000000n",
cih_3 = "0000cc0d00000000n",
cl_4 = "0000000055000000j",
clr_2 = "0000000000001500g",
cly_5 = "0000e30000000055l",
clg_5 = "0000e30000000021l",
clgr_2 = "00000000b9210000h",
clgf_5 = "0000e30000000031l",
clgfr_2 = "00000000b9310000h",
clmh_5 = "0000eb0000000020t",
clm_4 = "00000000bd000000r",
clmy_5 = "0000eb0000000021t",
clhf_5 = "0000e300000000cfl",
clhhr_2 = "00000000b9cf0000h",
clhlr_2 = "00000000b9df0000h",
clfi_3 = "0000c20f00000000n",
clgfi_3 = "0000c20e00000000n",
clih_3 = "0000cc0f00000000n",
clcl_2 = "0000000000000f00g",
clcle_4 = "00000000a9000000q",
clclu_5 = "0000eb000000008fs",
clrl_3 = "0000c60f00000000o",
clhrl_3 = "0000c60700000000o",
clgrl_3 = "0000c60a00000000o",
clghrl_3 = "0000c60600000000o",
clgfrl_3 = "0000c60e00000000o",
clst_2 = "00000000b25d0000h",
crl_3 = "0000c60d00000000o",
cgrl_3 = "0000c60800000000o",
cgfrl_3 = "0000c60c00000000o",
cuse_2 = "00000000b2570000h",
cmpsc_2 = "00000000b2630000h",
kimd_2 = "00000000b93e0000h",
klmd_2 = "00000000b93f0000h",
kmac_2 = "00000000b91e0000h",
thdr_2 = "00000000b3590000h",
thder_2 = "00000000b3580000h",
cxfbr_2 = "00000000b3960000h",
cxftr_2 = "00000000b9590000h",
cxfr_2 = "00000000b3b60000h",
cdfbr_2 = "00000000b3950000h",
cdftr_2 = "00000000b9510000h",
cdfr_2 = "00000000b3b50000h",
cefbr_2 = "00000000b3940000h",
cefr_2 = "00000000b3b40000h",
cxgbr_2 = "00000000b3a60000h",
cxgtr_2 = "00000000b3f90000h",
cxgr_2 = "00000000b3c60000h",
cdgbr_2 = "00000000b3a50000h",
cdgtr_2 = "00000000b3f10000h",
cdgr_2 = "00000000b3c50000h",
cegbr_2 = "00000000b3a40000h",
cegr_2 = "00000000b3c40000h",
cxstr_2 = "00000000b3fb0000h",
cdstr_2 = "00000000b3f30000h",
cxutr_2 = "00000000b3fa0000h",
cdutr_2 = "00000000b3f20000h",
cvb_4 = "000000004f000000j",
cvby_5 = "0000e30000000006l",
cvbg_5 = "0000e3000000000el",
cvd_4 = "000000004e000000j",
cvdy_5 = "0000e30000000026l",
cvdg_5 = "0000e3000000002el",
cuxtr_2 = "00000000b3ea0000h",
cudtr_2 = "00000000b3e20000h",
cu42_2 = "00000000b9b30000h",
cu41_2 = "00000000b9b20000h",
cpya_2 = "00000000b24d0000h",
d_4 = "000000005d000000j",
dr_2 = "0000000000001d00g",
dxbr_2 = "00000000b34d0000h",
dxr_2 = "00000000b22d0000h",
ddbr_2 = "00000000b31d0000h",
dd_4 = "000000006d000000j",
ddr_2 = "0000000000002d00g",
debr_2 = "00000000b30d0000h",
de_4 = "000000007d000000j",
der_2 = "0000000000003d00g",
dl_5 = "0000e30000000097l",
dlr_2 = "00000000b9970000h",
dlg_5 = "0000e30000000087l",
dlgr_2 = "00000000b9870000h",
dsg_5 = "0000e3000000000dl",
dsgr_2 = "00000000b90d0000h",
dsgf_5 = "0000e3000000001dl",
dsgfr_2 = "00000000b91d0000h",
x_4 = "0000000057000000j",
xr_2 = "0000000000001700g",
xy_5 = "0000e30000000057l",
xg_5 = "0000e30000000082l",
xgr_2 = "00000000b9820000h",
xihf_3 = "0000c00600000000n",
xilf_3 = "0000c00700000000n",
ex_4 = "0000000044000000j",
exrl_3 = "0000c60000000000o",
ear_2 = "00000000b24f0000h",
esea_2 = "00000000b99d0000h",
eextr_2 = "00000000b3ed0000h",
eedtr_2 = "00000000b3e50000h",
ecag_5 = "0000eb000000004cs",
efpc_2 = "00000000b38c0000h",
epar_2 = "00000000b2260000h",
epair_2 = "00000000b99a0000h",
epsw_2 = "00000000b98d0000h",
esar_2 = "00000000b2270000h",
esair_2 = "00000000b99b0000h",
esxtr_2 = "00000000b3ef0000h",
esdtr_2 = "00000000b3e70000h",
ereg_2 = "00000000b2490000h",
eregg_2 = "00000000b90e0000h",
esta_2 = "00000000b24a0000h",
flogr_2 = "00000000b9830000h",
hdr_2 = "0000000000002400g",
her_2 = "0000000000003400g",
iac_2 = "00000000b2240000h",
ic_4 = "0000000043000000j",
icy_5 = "0000e30000000073l",
icmh_5 = "0000eb0000000080t",
icm_4 = "00000000bf000000r",
icmy_5 = "0000eb0000000081t",
iihf_3 = "0000c00800000000n",
iilf_3 = "0000c00900000000n",
ipm_2 = "00000000b2220000h",
iske_2 = "00000000b2290000h",
ivsk_2 = "00000000b2230000h",
l_4 = "0000000058000000j",
lr_2 = "0000000000001800g",
ly_5 = "0000e30000000058l",
lg_5 = "0000e30000000004l",
lgr_2 = "00000000b9040000h",
lgf_5 = "0000e30000000014l",
lgfr_2 = "00000000b9140000h",
lxr_2 = "00000000b3650000h",
ld_4 = "0000000068000000j",
ldr_2 = "0000000000002800g",
ldy_5 = "0000ed0000000065l",
le_4 = "0000000078000000j",
ler_2 = "0000000000003800g",
ley_5 = "0000ed0000000064l",
lam_4 = "000000009a000000q",
lamy_5 = "0000eb000000009as",
la_4 = "0000000041000000j",
lay_5 = "0000e30000000071l",
lae_4 = "0000000051000000j",
laey_5 = "0000e30000000075l",
larl_3 = "0000c00000000000o",
laa_5 = "0000eb00000000f8s",
laag_5 = "0000eb00000000e8s",
laal_5 = "0000eb00000000fas",
laalg_5 = "0000eb00000000eas",
lan_5 = "0000eb00000000f4s",
lang_5 = "0000eb00000000e4s",
lax_5 = "0000eb00000000f7s",
laxg_5 = "0000eb00000000e7s",
lao_5 = "0000eb00000000f6s",
laog_5 = "0000eb00000000e6s",
lt_5 = "0000e30000000012l",
ltr_2 = "0000000000001200g",
ltg_5 = "0000e30000000002l",
ltgr_2 = "00000000b9020000h",
ltgf_5 = "0000e30000000032l",
ltgfr_2 = "00000000b9120000h",
ltxbr_2 = "00000000b3420000h",
ltxtr_2 = "00000000b3de0000h",
ltxr_2 = "00000000b3620000h",
ltdbr_2 = "00000000b3120000h",
ltdtr_2 = "00000000b3d60000h",
ltdr_2 = "0000000000002200g",
ltebr_2 = "00000000b3020000h",
lter_2 = "0000000000003200g",
lb_5 = "0000e30000000076l",
lbr_2 = "00000000b9260000h",
lgb_5 = "0000e30000000077l",
lgbr_2 = "00000000b9060000h",
lbh_5 = "0000e300000000c0l",
lcr_2 = "0000000000001300g",
lcgr_2 = "00000000b9030000h",
lcgfr_2 = "00000000b9130000h",
lcxbr_2 = "00000000b3430000h",
lcxr_2 = "00000000b3630000h",
lcdbr_2 = "00000000b3130000h",
lcdr_2 = "0000000000002300g",
lcdfr_2 = "00000000b3730000h",
lcebr_2 = "00000000b3030000h",
lcer_2 = "0000000000003300g",
lctl_4 = "00000000b7000000q",
lctlg_5 = "0000eb000000002fs",
fixr_2 = "00000000b3670000h",
fidr_2 = "00000000b37f0000h",
fier_2 = "00000000b3770000h",
ldgr_2 = "00000000b3c10000h",
lgdr_2 = "00000000b3cd0000h",
lh_4 = "0000000048000000j",
lhr_2 = "00000000b9270000h",
lhy_5 = "0000e30000000078l",
lgh_5 = "0000e30000000015l",
lghr_2 = "00000000b9070000h",
lhh_5 = "0000e300000000c4l",
lhrl_3 = "0000c40500000000o",
lghrl_3 = "0000c40400000000o",
lfh_5 = "0000e300000000cal",
lgfi_3 = "0000c00100000000n",
lxdbr_2 = "00000000b3050000h",
lxdr_2 = "00000000b3250000h",
lxebr_2 = "00000000b3060000h",
lxer_2 = "00000000b3260000h",
ldebr_2 = "00000000b3040000h",
lder_2 = "00000000b3240000h",
llgf_5 = "0000e30000000016l",
llgfr_2 = "00000000b9160000h",
llc_5 = "0000e30000000094l",
llcr_2 = "00000000b9940000h",
llgc_5 = "0000e30000000090l",
llgcr_2 = "00000000b9840000h",
llch_5 = "0000e300000000c2l",
llh_5 = "0000e30000000095l",
llhr_2 = "00000000b9950000h",
llgh_5 = "0000e30000000091l",
llghr_2 = "00000000b9850000h",
llhh_5 = "0000e300000000c6l",
llhrl_3 = "0000c40200000000o",
llghrl_3 = "0000c40600000000o",
llihf_3 = "0000c00e00000000n",
llilf_3 = "0000c00f00000000n",
llgfrl_3 = "0000c40e00000000o",
llgt_5 = "0000e30000000017l",
llgtr_2 = "00000000b9170000h",
lm_4 = "0000000098000000q",
lmy_5 = "0000eb0000000098s",
lmg_5 = "0000eb0000000004s",
lmh_5 = "0000eb0000000096s",
lnr_2 = "0000000000001100g",
lngr_2 = "00000000b9010000h",
lngfr_2 = "00000000b9110000h",
lnxbr_2 = "00000000b3410000h",
lnxr_2 = "00000000b3610000h",
lndbr_2 = "00000000b3110000h",
lndr_2 = "0000000000002100g",
lndfr_2 = "00000000b3710000h",
lnebr_2 = "00000000b3010000h",
lner_2 = "0000000000003100g",
loc_5 = "0000eb00000000f2t",
locg_5 = "0000eb00000000e2t",
lpq_5 = "0000e3000000008fl",
lpr_2 = "0000000000001000g",
lpgr_2 = "00000000b9000000h",
lpgfr_2 = "00000000b9100000h",
lpxbr_2 = "00000000b3400000h",
lpxr_2 = "00000000b3600000h",
lpdbr_2 = "00000000b3100000h",
lpdr_2 = "0000000000002000g",
lpdfr_2 = "00000000b3700000h",
lpebr_2 = "00000000b3000000h",
lper_2 = "0000000000003000g",
lra_4 = "00000000b1000000j",
lray_5 = "0000e30000000013l",
lrag_5 = "0000e30000000003l",
lrl_3 = "0000c40d00000000o",
lgrl_3 = "0000c40800000000o",
lgfrl_3 = "0000c40c00000000o",
lrvh_5 = "0000e3000000001fl",
lrv_5 = "0000e3000000001el",
lrvr_2 = "00000000b91f0000h",
lrvg_5 = "0000e3000000000fl",
lrvgr_2 = "00000000b90f0000h",
ldxbr_2 = "00000000b3450000h",
ldxr_2 = "0000000000002500g",
lrdr_2 = "0000000000002500g",
lexbr_2 = "00000000b3460000h",
lexr_2 = "00000000b3660000h",
ledbr_2 = "00000000b3440000h",
ledr_2 = "0000000000003500g",
lrer_2 = "0000000000003500g",
lura_2 = "00000000b24b0000h",
lurag_2 = "00000000b9050000h",
lzxr_2 = "00000000b3760000h",
lzdr_2 = "00000000b3750000h",
lzer_2 = "00000000b3740000h",
msta_2 = "00000000b2470000h",
mvcl_2 = "0000000000000e00g",
mvcle_4 = "00000000a8000000q",
mvclu_5 = "0000eb000000008es",
mvpg_2 = "00000000b2540000h",
mvst_2 = "00000000b2550000h",
m_4 = "000000005c000000j",
mfy_5 = "0000e3000000005cl",
mr_2 = "0000000000001c00g",
mxbr_2 = "00000000b34c0000h",
mxr_2 = "0000000000002600g",
mdbr_2 = "00000000b31c0000h",
md_4 = "000000006c000000j",
mdr_2 = "0000000000002c00g",
mxdbr_2 = "00000000b3070000h",
mxd_4 = "0000000067000000j",
mxdr_2 = "0000000000002700g",
meebr_2 = "00000000b3170000h",
meer_2 = "00000000b3370000h",
mdebr_2 = "00000000b30c0000h",
mde_4 = "000000007c000000j",
mder_2 = "0000000000003c00g",
me_4 = "000000007c000000j",
mer_2 = "0000000000003c00g",
mh_4 = "000000004c000000j",
mhy_5 = "0000e3000000007cl",
mlg_5 = "0000e30000000086l",
mlgr_2 = "00000000b9860000h",
ml_5 = "0000e30000000096l",
mlr_2 = "00000000b9960000h",
ms_4 = "0000000071000000j",
msr_2 = "00000000b2520000h",
msy_5 = "0000e30000000051l",
msg_5 = "0000e3000000000cl",
msgr_2 = "00000000b90c0000h",
msgf_5 = "0000e3000000001cl",
msgfr_2 = "00000000b91c0000h",
msfi_3 = "0000c20100000000n",
msgfi_3 = "0000c20000000000n",
o_4 = "0000000056000000j",
["or_2"] = "0000000000001600g",
oy_5 = "0000e30000000056l",
og_5 = "0000e30000000081l",
ogr_2 = "00000000b9810000h",
oihf_3 = "0000c00c00000000n",
oilf_3 = "0000c00d00000000n",
pgin_2 = "00000000b22e0000h",
pgout_2 = "00000000b22f0000h",
pcc_2 = "00000000b92c0000h",
pckmo_2 = "00000000b9280000h",
pfmf_2 = "00000000b9af0000h",
ptf_2 = "00000000b9a20000h",
popcnt_2 = "00000000b9e10000h",
pfd_5 = "0000e30000000036m",
pfdrl_3 = "0000c60200000000p",
pt_2 = "00000000b2280000h",
pti_2 = "00000000b99e0000h",
palb_2 = "00000000b2480000h",
rrbe_2 = "00000000b22a0000h",
rrbm_2 = "00000000b9ae0000h",
rll_5 = "0000eb000000001ds",
rllg_5 = "0000eb000000001cs",
srst_2 = "00000000b25e0000h",
srstu_2 = "00000000b9be0000h",
sar_2 = "00000000b24e0000h",
sfpc_2 = "00000000b3840000h",
sfasr_2 = "00000000b3850000h",
spm_2 = "000000000000400g",
ssar_2 = "00000000b2250000h",
ssair_2 = "00000000b99f0000h",
slda_4 = "000000008f000000q",
sldl_4 = "000000008d000000q",
sla_4 = "000000008b000000q",
slak_5 = "0000eb00000000dds",
slag_5 = "0000eb000000000bs",
sll_4 = "0000000089000000q",
sllk_5 = "0000eb00000000dfs",
sllg_5 = "0000eb000000000ds",
srda_4 = "000000008e000000q",
srdl_4 = "000000008c000000q",
sra_4 = "000000008a000000q",
srak_5 = "0000eb00000000dcs",
srag_5 = "0000eb000000000as",
srl_4 = "0000000088000000q",
srlk_5 = "0000eb00000000des",
srlg_5 = "0000eb000000000cs",
sqxbr_2 = "00000000b3160000h",
sqxr_2 = "00000000b3360000h",
sqdbr_2 = "00000000b3150000h",
sqdr_2 = "00000000b2440000h",
sqebr_2 = "00000000b3140000h",
sqer_2 = "00000000b2450000h",
st_4 = "0000000050000000j",
sty_5 = "0000e30000000050l",
stg_5 = "0000e30000000024l",
std_4 = "0000000060000000j",
stdy_5 = "0000ed0000000067l",
ste_4 = "0000000070000000j",
stey_5 = "0000ed0000000066l",
stam_4 = "000000009b000000q",
stamy_5 = "0000eb000000009bs",
stc_4 = "0000000042000000j",
stcy_5 = "0000e30000000072l",
stch_5 = "0000e300000000c3l",
stcmh_5 = "0000eb000000002ct",
stcm_4 = "00000000be000000r",
stcmy_5 = "0000eb000000002dt",
stctl_4 = "00000000b6000000q",
stctg_5 = "0000eb0000000025s",
sth_4 = "0000000040000000j",
sthy_5 = "0000e30000000070l",
sthh_5 = "0000e300000000c7l",
sthrl_3 = "0000c40700000000o",
stfh_5 = "0000e300000000cbl",
stm_4 = "0000000090000000q",
stmy_5 = "0000eb0000000090s",
stmg_5 = "0000eb0000000024s",
stmh_5 = "0000eb0000000026s",
stoc_5 = "0000eb00000000f3t",
stocg_5 = "0000eb00000000e3t",
stpq_5 = "0000e3000000008el",
strl_3 = "0000c40f00000000o",
stgrl_3 = "0000c40b00000000o",
strvh_5 = "0000e3000000003fl",
strv_5 = "0000e3000000003el",
strvg_5 = "0000e3000000002fl",
stura_2 = "00000000b2460000h",
sturg_2 = "00000000b9250000h",
s_4 = "000000005b000000j",
sr_2 = "0000000000001b00g",
sy_5 = "0000e3000000005bl",
sg_5 = "0000e30000000009l",
sgr_2 = "00000000b9090000h",
sgf_5 = "0000e30000000019l",
sgfr_2 = "00000000b9190000h",
sxbr_2 = "00000000b34b0000h",
sdbr_2 = "00000000b31b0000h",
sebr_2 = "00000000b30b0000h",
sh_4 = "000000004b000000j",
shy_5 = "0000e3000000007bl",
sl_4 = "000000005f000000j",
slr_2 = "0000000000001f00g",
sly_5 = "0000e3000000005fl",
slg_5 = "0000e3000000000bl",
slgr_2 = "00000000b90b0000h",
slgf_5 = "0000e3000000001bl",
slgfr_2 = "00000000b91b0000h",
slfi_3 = "0000c20500000000n",
slgfi_3 = "0000c20400000000n",
slb_5 = "0000e30000000099l",
slbr_2 = "00000000b9990000h",
slbg_5 = "0000e30000000089l",
slbgr_2 = "00000000b9890000h",
sxr_2 = "0000000000003700g",
sd_4 = "000000006b000000j",
sdr_2 = "0000000000002b00g",
se_4 = "000000007b000000j",
ser_2 = "0000000000003b00g",
su_4 = "000000007f000000j",
sur_2 = "0000000000003f00g",
sw_4 = "000000006f000000j",
swr_2 = "0000000000002f00g",
tar_2 = "00000000b24c0000h",
tb_2 = "00000000b22c0000h",
trace_4 = "0000000099000000q",
tracg_5 = "0000eb000000000fs",
tre_2 = "00000000b2a50000h",
}
for cond,c in pairs(map_cond) do
-- Extended mnemonics for branches.
-- TODO: replace 'B' with correct encoding.
-- brc
map_op["j"..cond.."_1"] = "00000000"..tohex(0xa7040000+shl(c, 20)).."B"
-- brcl
map_op["jg"..cond.."_1"] = tohex(0xc004+shl(c, 4)).."00000000".."B"
-- bc
map_op["b"..cond.."_1"] = "00000000"..tohex(0x47000000+shl(c, 20)).."B"
-- bcr
map_op["b"..cond.."r_1"] = "00000000"..tohex(0x0700+shl(c, 4)).."B"
end
------------------------------------------------------------------------------
-- Handle opcodes defined with template strings.
local function parse_template(params, template, nparams, pos)
local op = tonumber(sub(template, 1, 16), 16) --
-- 00000000005a0000 converts to 90
local n,rs = 1,26
parse_reg_type = false
-- Process each character. (if its RX-a==> 1st iteration gets R, 2nd==X and so on)
for p in gmatch(sub(template, 17), ".") do
local pr1,pr2,pr3
if p == "g" then
pr1,pr2=param[n],param[n+1]
op = op + shl(parse_reg(pr1),4) + parse_reg(pr2); n = n + 1 -- not sure if we will require n later, so keeping it as it is now
elseif p == "h" then
pr1,pr2=param[n],param[n+1]
op = op + shl(parse_reg(pr1),4) + parse_reg(pr2)
elseif p == "j" then
op = op + shl(parse_reg(param[1],24) + shl(parse_reg(param[2],20) + shl(parse_reg(param[3]),16) + parse_number(param[4])
-- assuming that the parameters are passes in order (R1,X2,B2,D) --only RX-a is satisfied
elseif p == "k" then
op = op + shl(parse_reg(param[1],40) + shl(parse_reg(param[2],36) + shl(parse_reg(param[3]),32) + parse_number(param[4]) parse_number(param[5])
-- assuming params are passed as (R1,X2,B2,DL2,DH2)
elseif p == "l" then
elseif p == "m" then
elseif p == "n" then
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
------------------------------------------------------------------------------
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