diff options
Diffstat (limited to 'libs/luajit-cmake/luajit/dynasm/dasm_arm.lua')
| -rw-r--r-- | libs/luajit-cmake/luajit/dynasm/dasm_arm.lua | 1125 |
1 files changed, 1125 insertions, 0 deletions
diff --git a/libs/luajit-cmake/luajit/dynasm/dasm_arm.lua b/libs/luajit-cmake/luajit/dynasm/dasm_arm.lua new file mode 100644 index 0000000..3b4db86 --- /dev/null +++ b/libs/luajit-cmake/luajit/dynasm/dasm_arm.lua @@ -0,0 +1,1125 @@ +------------------------------------------------------------------------------ +-- DynASM ARM module. +-- +-- Copyright (C) 2005-2022 Mike Pall. All rights reserved. +-- See dynasm.lua for full copyright notice. +------------------------------------------------------------------------------ + +-- Module information: +local _info = { + arch = "arm", + description = "DynASM ARM module", + version = "1.5.0", + vernum = 10500, + release = "2021-05-02", + 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", "IMM12", "IMM16", "IMML8", "IMML12", "IMMV8", +} + +-- 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 = { sp = "r13", lr = "r14", pc = "r15", } + +-- Int. register name -> ext. name. +local map_reg_rev = { r13 = "sp", r14 = "lr", r15 = "pc", } + +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, ror = 3, } + +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, +} + +------------------------------------------------------------------------------ + +-- Template strings for ARM instructions. +local map_op = { + -- Basic data processing instructions. + and_3 = "e0000000DNPs", + eor_3 = "e0200000DNPs", + sub_3 = "e0400000DNPs", + rsb_3 = "e0600000DNPs", + add_3 = "e0800000DNPs", + adc_3 = "e0a00000DNPs", + sbc_3 = "e0c00000DNPs", + rsc_3 = "e0e00000DNPs", + tst_2 = "e1100000NP", + teq_2 = "e1300000NP", + cmp_2 = "e1500000NP", + cmn_2 = "e1700000NP", + orr_3 = "e1800000DNPs", + mov_2 = "e1a00000DPs", + bic_3 = "e1c00000DNPs", + mvn_2 = "e1e00000DPs", + + and_4 = "e0000000DNMps", + eor_4 = "e0200000DNMps", + sub_4 = "e0400000DNMps", + rsb_4 = "e0600000DNMps", + add_4 = "e0800000DNMps", + adc_4 = "e0a00000DNMps", + sbc_4 = "e0c00000DNMps", + rsc_4 = "e0e00000DNMps", + tst_3 = "e1100000NMp", + teq_3 = "e1300000NMp", + cmp_3 = "e1500000NMp", + cmn_3 = "e1700000NMp", + orr_4 = "e1800000DNMps", + mov_3 = "e1a00000DMps", + bic_4 = "e1c00000DNMps", + mvn_3 = "e1e00000DMps", + + lsl_3 = "e1a00000DMws", + lsr_3 = "e1a00020DMws", + asr_3 = "e1a00040DMws", + ror_3 = "e1a00060DMws", + rrx_2 = "e1a00060DMs", + + -- Multiply and multiply-accumulate. + mul_3 = "e0000090NMSs", + mla_4 = "e0200090NMSDs", + umaal_4 = "e0400090DNMSs", -- v6 + mls_4 = "e0600090DNMSs", -- v6T2 + umull_4 = "e0800090DNMSs", + umlal_4 = "e0a00090DNMSs", + smull_4 = "e0c00090DNMSs", + smlal_4 = "e0e00090DNMSs", + + -- Halfword multiply and multiply-accumulate. + smlabb_4 = "e1000080NMSD", -- v5TE + smlatb_4 = "e10000a0NMSD", -- v5TE + smlabt_4 = "e10000c0NMSD", -- v5TE + smlatt_4 = "e10000e0NMSD", -- v5TE + smlawb_4 = "e1200080NMSD", -- v5TE + smulwb_3 = "e12000a0NMS", -- v5TE + smlawt_4 = "e12000c0NMSD", -- v5TE + smulwt_3 = "e12000e0NMS", -- v5TE + smlalbb_4 = "e1400080NMSD", -- v5TE + smlaltb_4 = "e14000a0NMSD", -- v5TE + smlalbt_4 = "e14000c0NMSD", -- v5TE + smlaltt_4 = "e14000e0NMSD", -- v5TE + smulbb_3 = "e1600080NMS", -- v5TE + smultb_3 = "e16000a0NMS", -- v5TE + smulbt_3 = "e16000c0NMS", -- v5TE + smultt_3 = "e16000e0NMS", -- v5TE + + -- Miscellaneous data processing instructions. + clz_2 = "e16f0f10DM", -- v5T + rev_2 = "e6bf0f30DM", -- v6 + rev16_2 = "e6bf0fb0DM", -- v6 + revsh_2 = "e6ff0fb0DM", -- v6 + sel_3 = "e6800fb0DNM", -- v6 + usad8_3 = "e780f010NMS", -- v6 + usada8_4 = "e7800010NMSD", -- v6 + rbit_2 = "e6ff0f30DM", -- v6T2 + movw_2 = "e3000000DW", -- v6T2 + movt_2 = "e3400000DW", -- v6T2 + -- Note: the X encodes width-1, not width. + sbfx_4 = "e7a00050DMvX", -- v6T2 + ubfx_4 = "e7e00050DMvX", -- v6T2 + -- Note: the X encodes the msb field, not the width. + bfc_3 = "e7c0001fDvX", -- v6T2 + bfi_4 = "e7c00010DMvX", -- v6T2 + + -- Packing and unpacking instructions. + pkhbt_3 = "e6800010DNM", pkhbt_4 = "e6800010DNMv", -- v6 + pkhtb_3 = "e6800050DNM", pkhtb_4 = "e6800050DNMv", -- v6 + sxtab_3 = "e6a00070DNM", sxtab_4 = "e6a00070DNMv", -- v6 + sxtab16_3 = "e6800070DNM", sxtab16_4 = "e6800070DNMv", -- v6 + sxtah_3 = "e6b00070DNM", sxtah_4 = "e6b00070DNMv", -- v6 + sxtb_2 = "e6af0070DM", sxtb_3 = "e6af0070DMv", -- v6 + sxtb16_2 = "e68f0070DM", sxtb16_3 = "e68f0070DMv", -- v6 + sxth_2 = "e6bf0070DM", sxth_3 = "e6bf0070DMv", -- v6 + uxtab_3 = "e6e00070DNM", uxtab_4 = "e6e00070DNMv", -- v6 + uxtab16_3 = "e6c00070DNM", uxtab16_4 = "e6c00070DNMv", -- v6 + uxtah_3 = "e6f00070DNM", uxtah_4 = "e6f00070DNMv", -- v6 + uxtb_2 = "e6ef0070DM", uxtb_3 = "e6ef0070DMv", -- v6 + uxtb16_2 = "e6cf0070DM", uxtb16_3 = "e6cf0070DMv", -- v6 + uxth_2 = "e6ff0070DM", uxth_3 = "e6ff0070DMv", -- v6 + + -- Saturating instructions. + qadd_3 = "e1000050DMN", -- v5TE + qsub_3 = "e1200050DMN", -- v5TE + qdadd_3 = "e1400050DMN", -- v5TE + qdsub_3 = "e1600050DMN", -- v5TE + -- Note: the X for ssat* encodes sat_imm-1, not sat_imm. + ssat_3 = "e6a00010DXM", ssat_4 = "e6a00010DXMp", -- v6 + usat_3 = "e6e00010DXM", usat_4 = "e6e00010DXMp", -- v6 + ssat16_3 = "e6a00f30DXM", -- v6 + usat16_3 = "e6e00f30DXM", -- v6 + + -- Parallel addition and subtraction. + sadd16_3 = "e6100f10DNM", -- v6 + sasx_3 = "e6100f30DNM", -- v6 + ssax_3 = "e6100f50DNM", -- v6 + ssub16_3 = "e6100f70DNM", -- v6 + sadd8_3 = "e6100f90DNM", -- v6 + ssub8_3 = "e6100ff0DNM", -- v6 + qadd16_3 = "e6200f10DNM", -- v6 + qasx_3 = "e6200f30DNM", -- v6 + qsax_3 = "e6200f50DNM", -- v6 + qsub16_3 = "e6200f70DNM", -- v6 + qadd8_3 = "e6200f90DNM", -- v6 + qsub8_3 = "e6200ff0DNM", -- v6 + shadd16_3 = "e6300f10DNM", -- v6 + shasx_3 = "e6300f30DNM", -- v6 + shsax_3 = "e6300f50DNM", -- v6 + shsub16_3 = "e6300f70DNM", -- v6 + shadd8_3 = "e6300f90DNM", -- v6 + shsub8_3 = "e6300ff0DNM", -- v6 + uadd16_3 = "e6500f10DNM", -- v6 + uasx_3 = "e6500f30DNM", -- v6 + usax_3 = "e6500f50DNM", -- v6 + usub16_3 = "e6500f70DNM", -- v6 + uadd8_3 = "e6500f90DNM", -- v6 + usub8_3 = "e6500ff0DNM", -- v6 + uqadd16_3 = "e6600f10DNM", -- v6 + uqasx_3 = "e6600f30DNM", -- v6 + uqsax_3 = "e6600f50DNM", -- v6 + uqsub16_3 = "e6600f70DNM", -- v6 + uqadd8_3 = "e6600f90DNM", -- v6 + uqsub8_3 = "e6600ff0DNM", -- v6 + uhadd16_3 = "e6700f10DNM", -- v6 + uhasx_3 = "e6700f30DNM", -- v6 + uhsax_3 = "e6700f50DNM", -- v6 + uhsub16_3 = "e6700f70DNM", -- v6 + uhadd8_3 = "e6700f90DNM", -- v6 + uhsub8_3 = "e6700ff0DNM", -- v6 + + -- Load/store instructions. + str_2 = "e4000000DL", str_3 = "e4000000DL", str_4 = "e4000000DL", + strb_2 = "e4400000DL", strb_3 = "e4400000DL", strb_4 = "e4400000DL", + ldr_2 = "e4100000DL", ldr_3 = "e4100000DL", ldr_4 = "e4100000DL", + ldrb_2 = "e4500000DL", ldrb_3 = "e4500000DL", ldrb_4 = "e4500000DL", + strh_2 = "e00000b0DL", strh_3 = "e00000b0DL", + ldrh_2 = "e01000b0DL", ldrh_3 = "e01000b0DL", + ldrd_2 = "e00000d0DL", ldrd_3 = "e00000d0DL", -- v5TE + ldrsb_2 = "e01000d0DL", ldrsb_3 = "e01000d0DL", + strd_2 = "e00000f0DL", strd_3 = "e00000f0DL", -- v5TE + ldrsh_2 = "e01000f0DL", ldrsh_3 = "e01000f0DL", + + ldm_2 = "e8900000oR", ldmia_2 = "e8900000oR", ldmfd_2 = "e8900000oR", + ldmda_2 = "e8100000oR", ldmfa_2 = "e8100000oR", + ldmdb_2 = "e9100000oR", ldmea_2 = "e9100000oR", + ldmib_2 = "e9900000oR", ldmed_2 = "e9900000oR", + stm_2 = "e8800000oR", stmia_2 = "e8800000oR", stmfd_2 = "e8800000oR", + stmda_2 = "e8000000oR", stmfa_2 = "e8000000oR", + stmdb_2 = "e9000000oR", stmea_2 = "e9000000oR", + stmib_2 = "e9800000oR", stmed_2 = "e9800000oR", + pop_1 = "e8bd0000R", push_1 = "e92d0000R", + + -- Branch instructions. + b_1 = "ea000000B", + bl_1 = "eb000000B", + blx_1 = "e12fff30C", + bx_1 = "e12fff10M", + + -- Miscellaneous instructions. + nop_0 = "e1a00000", + mrs_1 = "e10f0000D", + bkpt_1 = "e1200070K", -- v5T + svc_1 = "ef000000T", swi_1 = "ef000000T", + ud_0 = "e7f001f0", + + -- VFP instructions. + ["vadd.f32_3"] = "ee300a00dnm", + ["vadd.f64_3"] = "ee300b00Gdnm", + ["vsub.f32_3"] = "ee300a40dnm", + ["vsub.f64_3"] = "ee300b40Gdnm", + ["vmul.f32_3"] = "ee200a00dnm", + ["vmul.f64_3"] = "ee200b00Gdnm", + ["vnmul.f32_3"] = "ee200a40dnm", + ["vnmul.f64_3"] = "ee200b40Gdnm", + ["vmla.f32_3"] = "ee000a00dnm", + ["vmla.f64_3"] = "ee000b00Gdnm", + ["vmls.f32_3"] = "ee000a40dnm", + ["vmls.f64_3"] = "ee000b40Gdnm", + ["vnmla.f32_3"] = "ee100a40dnm", + ["vnmla.f64_3"] = "ee100b40Gdnm", + ["vnmls.f32_3"] = "ee100a00dnm", + ["vnmls.f64_3"] = "ee100b00Gdnm", + ["vdiv.f32_3"] = "ee800a00dnm", + ["vdiv.f64_3"] = "ee800b00Gdnm", + + ["vabs.f32_2"] = "eeb00ac0dm", + ["vabs.f64_2"] = "eeb00bc0Gdm", + ["vneg.f32_2"] = "eeb10a40dm", + ["vneg.f64_2"] = "eeb10b40Gdm", + ["vsqrt.f32_2"] = "eeb10ac0dm", + ["vsqrt.f64_2"] = "eeb10bc0Gdm", + ["vcmp.f32_2"] = "eeb40a40dm", + ["vcmp.f64_2"] = "eeb40b40Gdm", + ["vcmpe.f32_2"] = "eeb40ac0dm", + ["vcmpe.f64_2"] = "eeb40bc0Gdm", + ["vcmpz.f32_1"] = "eeb50a40d", + ["vcmpz.f64_1"] = "eeb50b40Gd", + ["vcmpze.f32_1"] = "eeb50ac0d", + ["vcmpze.f64_1"] = "eeb50bc0Gd", + + vldr_2 = "ed100a00dl|ed100b00Gdl", + vstr_2 = "ed000a00dl|ed000b00Gdl", + vldm_2 = "ec900a00or", + vldmia_2 = "ec900a00or", + vldmdb_2 = "ed100a00or", + vpop_1 = "ecbd0a00r", + vstm_2 = "ec800a00or", + vstmia_2 = "ec800a00or", + vstmdb_2 = "ed000a00or", + vpush_1 = "ed2d0a00r", + + ["vmov.f32_2"] = "eeb00a40dm|eeb00a00dY", -- #imm is VFPv3 only + ["vmov.f64_2"] = "eeb00b40Gdm|eeb00b00GdY", -- #imm is VFPv3 only + vmov_2 = "ee100a10Dn|ee000a10nD", + vmov_3 = "ec500a10DNm|ec400a10mDN|ec500b10GDNm|ec400b10GmDN", + + vmrs_0 = "eef1fa10", + vmrs_1 = "eef10a10D", + vmsr_1 = "eee10a10D", + + ["vcvt.s32.f32_2"] = "eebd0ac0dm", + ["vcvt.s32.f64_2"] = "eebd0bc0dGm", + ["vcvt.u32.f32_2"] = "eebc0ac0dm", + ["vcvt.u32.f64_2"] = "eebc0bc0dGm", + ["vcvtr.s32.f32_2"] = "eebd0a40dm", + ["vcvtr.s32.f64_2"] = "eebd0b40dGm", + ["vcvtr.u32.f32_2"] = "eebc0a40dm", + ["vcvtr.u32.f64_2"] = "eebc0b40dGm", + ["vcvt.f32.s32_2"] = "eeb80ac0dm", + ["vcvt.f64.s32_2"] = "eeb80bc0GdFm", + ["vcvt.f32.u32_2"] = "eeb80a40dm", + ["vcvt.f64.u32_2"] = "eeb80b40GdFm", + ["vcvt.f32.f64_2"] = "eeb70bc0dGm", + ["vcvt.f64.f32_2"] = "eeb70ac0GdFm", + + -- VFPv4 only: + ["vfma.f32_3"] = "eea00a00dnm", + ["vfma.f64_3"] = "eea00b00Gdnm", + ["vfms.f32_3"] = "eea00a40dnm", + ["vfms.f64_3"] = "eea00b40Gdnm", + ["vfnma.f32_3"] = "ee900a40dnm", + ["vfnma.f64_3"] = "ee900b40Gdnm", + ["vfnms.f32_3"] = "ee900a00dnm", + ["vfnms.f64_3"] = "ee900b00Gdnm", + + -- NYI: Advanced SIMD instructions. + + -- NYI: I have no need for these instructions right now: + -- swp, swpb, strex, ldrex, strexd, ldrexd, strexb, ldrexb, strexh, ldrexh + -- msr, nopv6, yield, wfe, wfi, sev, dbg, bxj, smc, srs, rfe + -- cps, setend, pli, pld, pldw, clrex, dsb, dmb, isb + -- stc, ldc, mcr, mcr2, mrc, mrc2, mcrr, mcrr2, mrrc, mrrc2, cdp, cdp2 +} + +-- Add mnemonics for "s" variants. +do + local t = {} + for k,v in pairs(map_op) do + if sub(v, -1) == "s" then + local v2 = sub(v, 1, 2)..char(byte(v, 3)+1)..sub(v, 4, -2) + t[sub(k, 1, -3).."s"..sub(k, -2)] = v2 + end + end + for k,v in pairs(t) do + map_op[k] = v + end +end + +------------------------------------------------------------------------------ + +local function parse_gpr(expr) + local tname, ovreg = match(expr, "^([%w_]+):(r1?[0-9])$") + 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 r = match(expr, "^r(1?[0-9])$") + if r then + r = tonumber(r) + if r <= 15 then return r, tp end + end + werror("bad register name `"..expr.."'") +end + +local function parse_gpr_pm(expr) + local pm, expr2 = match(expr, "^([+-]?)(.*)$") + return parse_gpr(expr2), (pm == "-") +end + +local function parse_vr(expr, tp) + local t, r = match(expr, "^([sd])([0-9]+)$") + if t == tp then + r = tonumber(r) + if r <= 31 then + if t == "s" then return shr(r, 1), band(r, 1) end + return band(r, 15), shr(r, 4) + end + end + werror("bad register name `"..expr.."'") +end + +local function parse_reglist(reglist) + reglist = match(reglist, "^{%s*([^}]*)}$") + if not reglist then werror("register list expected") end + local rr = 0 + for p in gmatch(reglist..",", "%s*([^,]*),") do + local rbit = shl(1, parse_gpr(gsub(p, "%s+$", ""))) + if band(rr, rbit) ~= 0 then + werror("duplicate register `"..p.."'") + end + rr = rr + rbit + end + return rr +end + +local function parse_vrlist(reglist) + local ta, ra, tb, rb = match(reglist, + "^{%s*([sd])([0-9]+)%s*%-%s*([sd])([0-9]+)%s*}$") + ra, rb = tonumber(ra), tonumber(rb) + if ta and ta == tb and ra and rb and ra <= 31 and rb <= 31 and ra <= rb then + local nr = rb+1 - ra + if ta == "s" then + return shl(shr(ra,1),12)+shl(band(ra,1),22) + nr + else + return shl(band(ra,15),12)+shl(shr(ra,4),22) + nr*2 + 0x100 + end + end + werror("register list expected") +end + +local function parse_imm(imm, bits, shift, scale, signed) + imm = match(imm, "^#(.*)$") + if not imm then werror("expected immediate operand") end + local n = tonumber(imm) + if n then + local m = sar(n, scale) + if shl(m, scale) == n then + if signed then + local s = sar(m, bits-1) + if s == 0 then return shl(m, shift) + elseif s == -1 then return shl(m + shl(1, bits), shift) end + else + if sar(m, bits) == 0 then return shl(m, shift) end + end + end + werror("out of range immediate `"..imm.."'") + else + waction("IMM", (signed and 32768 or 0)+scale*1024+bits*32+shift, imm) + return 0 + end +end + +local function parse_imm12(imm) + local n = tonumber(imm) + if n then + local m = band(n) + for i=0,-15,-1 do + if shr(m, 8) == 0 then return m + shl(band(i, 15), 8) end + m = ror(m, 2) + end + werror("out of range immediate `"..imm.."'") + else + waction("IMM12", 0, imm) + return 0 + end +end + +local function parse_imm16(imm) + imm = match(imm, "^#(.*)$") + if not imm then werror("expected immediate operand") end + local n = tonumber(imm) + if n then + if shr(n, 16) == 0 then return band(n, 0x0fff) + shl(band(n, 0xf000), 4) end + werror("out of range immediate `"..imm.."'") + else + waction("IMM16", 32*16, imm) + return 0 + end +end + +local function parse_imm_load(imm, ext) + local n = tonumber(imm) + if n then + if ext then + if n >= -255 and n <= 255 then + local up = 0x00800000 + if n < 0 then n = -n; up = 0 end + return shl(band(n, 0xf0), 4) + band(n, 0x0f) + up + end + else + if n >= -4095 and n <= 4095 then + if n >= 0 then return n+0x00800000 end + return -n + end + end + werror("out of range immediate `"..imm.."'") + else + waction(ext and "IMML8" or "IMML12", 32768 + shl(ext and 8 or 12, 5), imm) + return 0 + end +end + +local function parse_shift(shift, gprok) + if shift == "rrx" then + return 3 * 32 + else + local s, s2 = match(shift, "^(%S+)%s*(.*)$") + s = map_shift[s] + if not s then werror("expected shift operand") end + if sub(s2, 1, 1) == "#" then + return parse_imm(s2, 5, 7, 0, false) + shl(s, 5) + else + if not gprok then werror("expected immediate shift operand") end + return shl(parse_gpr(s2), 8) + shl(s, 5) + 16 + end + end +end + +local function parse_label(label, def) + local prefix = sub(label, 1, 2) + -- =>label (pc label reference) + if prefix == "=>" then + return "PC", 0, sub(label, 3) + end + -- ->name (global label reference) + if prefix == "->" then + return "LG", map_global[sub(label, 3)] + end + if def then + -- [1-9] (local label definition) + if match(label, "^[1-9]$") 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 parse_load(params, nparams, n, op) + local oplo = band(op, 255) + local ext, ldrd = (oplo ~= 0), (oplo == 208) + local d + if (ldrd or oplo == 240) then + d = band(shr(op, 12), 15) + if band(d, 1) ~= 0 then werror("odd destination register") end + end + local pn = params[n] + local p1, wb = match(pn, "^%[%s*(.-)%s*%](!?)$") + local p2 = params[n+1] + if not p1 then + if not p2 then + if match(pn, "^[<>=%-]") or match(pn, "^extern%s+") then + local mode, n, s = parse_label(pn, false) + waction("REL_"..mode, n + (ext and 0x1800 or 0x0800), s, 1) + return op + 15 * 65536 + 0x01000000 + (ext and 0x00400000 or 0) + end + local reg, tailr = match(pn, "^([%w_:]+)%s*(.*)$") + if reg and tailr ~= "" then + local d, tp = parse_gpr(reg) + if tp then + waction(ext and "IMML8" or "IMML12", 32768 + 32*(ext and 8 or 12), + format(tp.ctypefmt, tailr)) + return op + shl(d, 16) + 0x01000000 + (ext and 0x00400000 or 0) + end + end + end + werror("expected address operand") + end + if wb == "!" then op = op + 0x00200000 end + if p2 then + if wb == "!" then werror("bad use of '!'") end + local p3 = params[n+2] + op = op + shl(parse_gpr(p1), 16) + local imm = match(p2, "^#(.*)$") + if imm then + local m = parse_imm_load(imm, ext) + if p3 then werror("too many parameters") end + op = op + m + (ext and 0x00400000 or 0) + else + local m, neg = parse_gpr_pm(p2) + if ldrd and (m == d or m-1 == d) then werror("register conflict") end + op = op + m + (neg and 0 or 0x00800000) + (ext and 0 or 0x02000000) + if p3 then op = op + parse_shift(p3) end + end + else + local p1a, p2 = match(p1, "^([^,%s]*)%s*(.*)$") + op = op + shl(parse_gpr(p1a), 16) + 0x01000000 + if p2 ~= "" then + local imm = match(p2, "^,%s*#(.*)$") + if imm then + local m = parse_imm_load(imm, ext) + op = op + m + (ext and 0x00400000 or 0) + else + local p2a, p3 = match(p2, "^,%s*([^,%s]*)%s*,?%s*(.*)$") + local m, neg = parse_gpr_pm(p2a) + if ldrd and (m == d or m-1 == d) then werror("register conflict") end + op = op + m + (neg and 0 or 0x00800000) + (ext and 0 or 0x02000000) + if p3 ~= "" then + if ext then werror("too many parameters") end + op = op + parse_shift(p3) + end + end + else + if wb == "!" then werror("bad use of '!'") end + op = op + (ext and 0x00c00000 or 0x00800000) + end + end + return op +end + +local function parse_vload(q) + local reg, imm = match(q, "^%[%s*([^,%s]*)%s*(.*)%]$") + if reg then + local d = shl(parse_gpr(reg), 16) + if imm == "" then return d end + imm = match(imm, "^,%s*#(.*)$") + if imm then + local n = tonumber(imm) + if n then + if n >= -1020 and n <= 1020 and n%4 == 0 then + return d + (n >= 0 and n/4+0x00800000 or -n/4) + end + werror("out of range immediate `"..imm.."'") + else + waction("IMMV8", 32768 + 32*8, imm) + return d + end + end + else + if match(q, "^[<>=%-]") or match(q, "^extern%s+") then + local mode, n, s = parse_label(q, false) + waction("REL_"..mode, n + 0x2800, s, 1) + return 15 * 65536 + end + local reg, tailr = match(q, "^([%w_:]+)%s*(.*)$") + if reg and tailr ~= "" then + local d, tp = parse_gpr(reg) + if tp then + waction("IMMV8", 32768 + 32*8, format(tp.ctypefmt, tailr)) + return shl(d, 16) + end + end + end + werror("expected address operand") +end + +------------------------------------------------------------------------------ + +-- Handle opcodes defined with template strings. +local function parse_template(params, template, nparams, pos) + local op = tonumber(sub(template, 1, 8), 16) + local n = 1 + local vr = "s" + + -- Process each character. + for p in gmatch(sub(template, 9), ".") do + local q = params[n] + if p == "D" then + op = op + shl(parse_gpr(q), 12); n = n + 1 + elseif p == "N" then + op = op + shl(parse_gpr(q), 16); n = n + 1 + elseif p == "S" then + op = op + shl(parse_gpr(q), 8); n = n + 1 + elseif p == "M" then + op = op + parse_gpr(q); n = n + 1 + elseif p == "d" then + local r,h = parse_vr(q, vr); op = op+shl(r,12)+shl(h,22); n = n + 1 + elseif p == "n" then + local r,h = parse_vr(q, vr); op = op+shl(r,16)+shl(h,7); n = n + 1 + elseif p == "m" then + local r,h = parse_vr(q, vr); op = op+r+shl(h,5); n = n + 1 + elseif p == "P" then + local imm = match(q, "^#(.*)$") + if imm then + op = op + parse_imm12(imm) + 0x02000000 + else + op = op + parse_gpr(q) + end + n = n + 1 + elseif p == "p" then + op = op + parse_shift(q, true); n = n + 1 + elseif p == "L" then + op = parse_load(params, nparams, n, op) + elseif p == "l" then + op = op + parse_vload(q) + elseif p == "B" then + local mode, n, s = parse_label(q, false) + waction("REL_"..mode, n, s, 1) + elseif p == "C" then -- blx gpr vs. blx label. + if match(q, "^([%w_]+):(r1?[0-9])$") or match(q, "^r(1?[0-9])$") then + op = op + parse_gpr(q) + else + if op < 0xe0000000 then werror("unconditional instruction") end + local mode, n, s = parse_label(q, false) + waction("REL_"..mode, n, s, 1) + op = 0xfa000000 + end + elseif p == "F" then + vr = "s" + elseif p == "G" then + vr = "d" + elseif p == "o" then + local r, wb = match(q, "^([^!]*)(!?)$") + op = op + shl(parse_gpr(r), 16) + (wb == "!" and 0x00200000 or 0) + n = n + 1 + elseif p == "R" then + op = op + parse_reglist(q); n = n + 1 + elseif p == "r" then + op = op + parse_vrlist(q); n = n + 1 + elseif p == "W" then + op = op + parse_imm16(q); n = n + 1 + elseif p == "v" then + op = op + parse_imm(q, 5, 7, 0, false); n = n + 1 + elseif p == "w" then + local imm = match(q, "^#(.*)$") + if imm then + op = op + parse_imm(q, 5, 7, 0, false); n = n + 1 + else + op = op + shl(parse_gpr(q), 8) + 16 + end + elseif p == "X" then + op = op + parse_imm(q, 5, 16, 0, false); n = n + 1 + elseif p == "Y" then + local imm = tonumber(match(q, "^#(.*)$")); n = n + 1 + if not imm or shr(imm, 8) ~= 0 then + werror("bad immediate operand") + end + op = op + shl(band(imm, 0xf0), 12) + band(imm, 0x0f) + elseif p == "K" then + local imm = tonumber(match(q, "^#(.*)$")); n = n + 1 + if not imm or shr(imm, 16) ~= 0 then + werror("bad immediate operand") + end + op = op + shl(band(imm, 0xfff0), 4) + band(imm, 0x000f) + elseif p == "T" then + op = op + parse_imm(q, 24, 0, 0, false); n = n + 1 + elseif p == "s" then + -- Ignored. + else + assert(false) + end + end + wputpos(pos, op) +end + +map_op[".template__"] = function(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 + +------------------------------------------------------------------------------ + +-- 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 = function(t, k) + local v = map_coreop[k] + if v then return v end + local k1, cc, k2 = match(k, "^(.-)(..)([._].*)$") + local cv = map_cond[cc] + if cv then + local v = rawget(t, k1..k2) + if type(v) == "string" then + local scv = format("%x", cv) + return gsub(scv..sub(v, 2), "|e", "|"..scv) + end + end + end }) + setmetatable(map_def, { __index = map_archdef }) + return map_op, map_def +end + +return _M + +------------------------------------------------------------------------------ + |