From ebc50b387ab209c9f9a0d92e340ac293d5697274 Mon Sep 17 00:00:00 2001 From: sanine Date: Sat, 11 Mar 2023 15:58:20 -0600 Subject: build & link with luajit instead of lua5.1 --- libs/luajit-cmake/luajit/src/jit/dis_arm.lua | 689 +++++++++++++++++++++++++++ 1 file changed, 689 insertions(+) create mode 100644 libs/luajit-cmake/luajit/src/jit/dis_arm.lua (limited to 'libs/luajit-cmake/luajit/src/jit/dis_arm.lua') diff --git a/libs/luajit-cmake/luajit/src/jit/dis_arm.lua b/libs/luajit-cmake/luajit/src/jit/dis_arm.lua new file mode 100644 index 0000000..18ab68d --- /dev/null +++ b/libs/luajit-cmake/luajit/src/jit/dis_arm.lua @@ -0,0 +1,689 @@ +---------------------------------------------------------------------------- +-- LuaJIT ARM disassembler module. +-- +-- Copyright (C) 2005-2022 Mike Pall. All rights reserved. +-- Released under the MIT license. See Copyright Notice in luajit.h +---------------------------------------------------------------------------- +-- This is a helper module used by the LuaJIT machine code dumper module. +-- +-- It disassembles most user-mode ARMv7 instructions +-- NYI: Advanced SIMD and VFP instructions. +------------------------------------------------------------------------------ + +local type = type +local sub, byte, format = string.sub, string.byte, string.format +local match, gmatch = string.match, string.gmatch +local concat = table.concat +local bit = require("bit") +local band, bor, ror, tohex = bit.band, bit.bor, bit.ror, bit.tohex +local lshift, rshift, arshift = bit.lshift, bit.rshift, bit.arshift + +------------------------------------------------------------------------------ +-- Opcode maps +------------------------------------------------------------------------------ + +local map_loadc = { + shift = 8, mask = 15, + [10] = { + shift = 20, mask = 1, + [0] = { + shift = 23, mask = 3, + [0] = "vmovFmDN", "vstmFNdr", + _ = { + shift = 21, mask = 1, + [0] = "vstrFdl", + { shift = 16, mask = 15, [13] = "vpushFdr", _ = "vstmdbFNdr", } + }, + }, + { + shift = 23, mask = 3, + [0] = "vmovFDNm", + { shift = 16, mask = 15, [13] = "vpopFdr", _ = "vldmFNdr", }, + _ = { + shift = 21, mask = 1, + [0] = "vldrFdl", "vldmdbFNdr", + }, + }, + }, + [11] = { + shift = 20, mask = 1, + [0] = { + shift = 23, mask = 3, + [0] = "vmovGmDN", "vstmGNdr", + _ = { + shift = 21, mask = 1, + [0] = "vstrGdl", + { shift = 16, mask = 15, [13] = "vpushGdr", _ = "vstmdbGNdr", } + }, + }, + { + shift = 23, mask = 3, + [0] = "vmovGDNm", + { shift = 16, mask = 15, [13] = "vpopGdr", _ = "vldmGNdr", }, + _ = { + shift = 21, mask = 1, + [0] = "vldrGdl", "vldmdbGNdr", + }, + }, + }, + _ = { + shift = 0, mask = 0 -- NYI ldc, mcrr, mrrc. + }, +} + +local map_vfps = { + shift = 6, mask = 0x2c001, + [0] = "vmlaF.dnm", "vmlsF.dnm", + [0x04000] = "vnmlsF.dnm", [0x04001] = "vnmlaF.dnm", + [0x08000] = "vmulF.dnm", [0x08001] = "vnmulF.dnm", + [0x0c000] = "vaddF.dnm", [0x0c001] = "vsubF.dnm", + [0x20000] = "vdivF.dnm", + [0x24000] = "vfnmsF.dnm", [0x24001] = "vfnmaF.dnm", + [0x28000] = "vfmaF.dnm", [0x28001] = "vfmsF.dnm", + [0x2c000] = "vmovF.dY", + [0x2c001] = { + shift = 7, mask = 0x1e01, + [0] = "vmovF.dm", "vabsF.dm", + [0x0200] = "vnegF.dm", [0x0201] = "vsqrtF.dm", + [0x0800] = "vcmpF.dm", [0x0801] = "vcmpeF.dm", + [0x0a00] = "vcmpzF.d", [0x0a01] = "vcmpzeF.d", + [0x0e01] = "vcvtG.dF.m", + [0x1000] = "vcvt.f32.u32Fdm", [0x1001] = "vcvt.f32.s32Fdm", + [0x1800] = "vcvtr.u32F.dm", [0x1801] = "vcvt.u32F.dm", + [0x1a00] = "vcvtr.s32F.dm", [0x1a01] = "vcvt.s32F.dm", + }, +} + +local map_vfpd = { + shift = 6, mask = 0x2c001, + [0] = "vmlaG.dnm", "vmlsG.dnm", + [0x04000] = "vnmlsG.dnm", [0x04001] = "vnmlaG.dnm", + [0x08000] = "vmulG.dnm", [0x08001] = "vnmulG.dnm", + [0x0c000] = "vaddG.dnm", [0x0c001] = "vsubG.dnm", + [0x20000] = "vdivG.dnm", + [0x24000] = "vfnmsG.dnm", [0x24001] = "vfnmaG.dnm", + [0x28000] = "vfmaG.dnm", [0x28001] = "vfmsG.dnm", + [0x2c000] = "vmovG.dY", + [0x2c001] = { + shift = 7, mask = 0x1e01, + [0] = "vmovG.dm", "vabsG.dm", + [0x0200] = "vnegG.dm", [0x0201] = "vsqrtG.dm", + [0x0800] = "vcmpG.dm", [0x0801] = "vcmpeG.dm", + [0x0a00] = "vcmpzG.d", [0x0a01] = "vcmpzeG.d", + [0x0e01] = "vcvtF.dG.m", + [0x1000] = "vcvt.f64.u32GdFm", [0x1001] = "vcvt.f64.s32GdFm", + [0x1800] = "vcvtr.u32FdG.m", [0x1801] = "vcvt.u32FdG.m", + [0x1a00] = "vcvtr.s32FdG.m", [0x1a01] = "vcvt.s32FdG.m", + }, +} + +local map_datac = { + shift = 24, mask = 1, + [0] = { + shift = 4, mask = 1, + [0] = { + shift = 8, mask = 15, + [10] = map_vfps, + [11] = map_vfpd, + -- NYI cdp, mcr, mrc. + }, + { + shift = 8, mask = 15, + [10] = { + shift = 20, mask = 15, + [0] = "vmovFnD", "vmovFDn", + [14] = "vmsrD", + [15] = { shift = 12, mask = 15, [15] = "vmrs", _ = "vmrsD", }, + }, + }, + }, + "svcT", +} + +local map_loadcu = { + shift = 0, mask = 0, -- NYI unconditional CP load/store. +} + +local map_datacu = { + shift = 0, mask = 0, -- NYI unconditional CP data. +} + +local map_simddata = { + shift = 0, mask = 0, -- NYI SIMD data. +} + +local map_simdload = { + shift = 0, mask = 0, -- NYI SIMD load/store, preload. +} + +local map_preload = { + shift = 0, mask = 0, -- NYI preload. +} + +local map_media = { + shift = 20, mask = 31, + [0] = false, + { --01 + shift = 5, mask = 7, + [0] = "sadd16DNM", "sasxDNM", "ssaxDNM", "ssub16DNM", + "sadd8DNM", false, false, "ssub8DNM", + }, + { --02 + shift = 5, mask = 7, + [0] = "qadd16DNM", "qasxDNM", "qsaxDNM", "qsub16DNM", + "qadd8DNM", false, false, "qsub8DNM", + }, + { --03 + shift = 5, mask = 7, + [0] = "shadd16DNM", "shasxDNM", "shsaxDNM", "shsub16DNM", + "shadd8DNM", false, false, "shsub8DNM", + }, + false, + { --05 + shift = 5, mask = 7, + [0] = "uadd16DNM", "uasxDNM", "usaxDNM", "usub16DNM", + "uadd8DNM", false, false, "usub8DNM", + }, + { --06 + shift = 5, mask = 7, + [0] = "uqadd16DNM", "uqasxDNM", "uqsaxDNM", "uqsub16DNM", + "uqadd8DNM", false, false, "uqsub8DNM", + }, + { --07 + shift = 5, mask = 7, + [0] = "uhadd16DNM", "uhasxDNM", "uhsaxDNM", "uhsub16DNM", + "uhadd8DNM", false, false, "uhsub8DNM", + }, + { --08 + shift = 5, mask = 7, + [0] = "pkhbtDNMU", false, "pkhtbDNMU", + { shift = 16, mask = 15, [15] = "sxtb16DMU", _ = "sxtab16DNMU", }, + "pkhbtDNMU", "selDNM", "pkhtbDNMU", + }, + false, + { --0a + shift = 5, mask = 7, + [0] = "ssatDxMu", "ssat16DxM", "ssatDxMu", + { shift = 16, mask = 15, [15] = "sxtbDMU", _ = "sxtabDNMU", }, + "ssatDxMu", false, "ssatDxMu", + }, + { --0b + shift = 5, mask = 7, + [0] = "ssatDxMu", "revDM", "ssatDxMu", + { shift = 16, mask = 15, [15] = "sxthDMU", _ = "sxtahDNMU", }, + "ssatDxMu", "rev16DM", "ssatDxMu", + }, + { --0c + shift = 5, mask = 7, + [3] = { shift = 16, mask = 15, [15] = "uxtb16DMU", _ = "uxtab16DNMU", }, + }, + false, + { --0e + shift = 5, mask = 7, + [0] = "usatDwMu", "usat16DwM", "usatDwMu", + { shift = 16, mask = 15, [15] = "uxtbDMU", _ = "uxtabDNMU", }, + "usatDwMu", false, "usatDwMu", + }, + { --0f + shift = 5, mask = 7, + [0] = "usatDwMu", "rbitDM", "usatDwMu", + { shift = 16, mask = 15, [15] = "uxthDMU", _ = "uxtahDNMU", }, + "usatDwMu", "revshDM", "usatDwMu", + }, + { --10 + shift = 12, mask = 15, + [15] = { + shift = 5, mask = 7, + "smuadNMS", "smuadxNMS", "smusdNMS", "smusdxNMS", + }, + _ = { + shift = 5, mask = 7, + [0] = "smladNMSD", "smladxNMSD", "smlsdNMSD", "smlsdxNMSD", + }, + }, + false, false, false, + { --14 + shift = 5, mask = 7, + [0] = "smlaldDNMS", "smlaldxDNMS", "smlsldDNMS", "smlsldxDNMS", + }, + { --15 + shift = 5, mask = 7, + [0] = { shift = 12, mask = 15, [15] = "smmulNMS", _ = "smmlaNMSD", }, + { shift = 12, mask = 15, [15] = "smmulrNMS", _ = "smmlarNMSD", }, + false, false, false, false, + "smmlsNMSD", "smmlsrNMSD", + }, + false, false, + { --18 + shift = 5, mask = 7, + [0] = { shift = 12, mask = 15, [15] = "usad8NMS", _ = "usada8NMSD", }, + }, + false, + { --1a + shift = 5, mask = 3, [2] = "sbfxDMvw", + }, + { --1b + shift = 5, mask = 3, [2] = "sbfxDMvw", + }, + { --1c + shift = 5, mask = 3, + [0] = { shift = 0, mask = 15, [15] = "bfcDvX", _ = "bfiDMvX", }, + }, + { --1d + shift = 5, mask = 3, + [0] = { shift = 0, mask = 15, [15] = "bfcDvX", _ = "bfiDMvX", }, + }, + { --1e + shift = 5, mask = 3, [2] = "ubfxDMvw", + }, + { --1f + shift = 5, mask = 3, [2] = "ubfxDMvw", + }, +} + +local map_load = { + shift = 21, mask = 9, + { + shift = 20, mask = 5, + [0] = "strtDL", "ldrtDL", [4] = "strbtDL", [5] = "ldrbtDL", + }, + _ = { + shift = 20, mask = 5, + [0] = "strDL", "ldrDL", [4] = "strbDL", [5] = "ldrbDL", + } +} + +local map_load1 = { + shift = 4, mask = 1, + [0] = map_load, map_media, +} + +local map_loadm = { + shift = 20, mask = 1, + [0] = { + shift = 23, mask = 3, + [0] = "stmdaNR", "stmNR", + { shift = 16, mask = 63, [45] = "pushR", _ = "stmdbNR", }, "stmibNR", + }, + { + shift = 23, mask = 3, + [0] = "ldmdaNR", { shift = 16, mask = 63, [61] = "popR", _ = "ldmNR", }, + "ldmdbNR", "ldmibNR", + }, +} + +local map_data = { + shift = 21, mask = 15, + [0] = "andDNPs", "eorDNPs", "subDNPs", "rsbDNPs", + "addDNPs", "adcDNPs", "sbcDNPs", "rscDNPs", + "tstNP", "teqNP", "cmpNP", "cmnNP", + "orrDNPs", "movDPs", "bicDNPs", "mvnDPs", +} + +local map_mul = { + shift = 21, mask = 7, + [0] = "mulNMSs", "mlaNMSDs", "umaalDNMS", "mlsDNMS", + "umullDNMSs", "umlalDNMSs", "smullDNMSs", "smlalDNMSs", +} + +local map_sync = { + shift = 20, mask = 15, -- NYI: brackets around N. R(D+1) for ldrexd/strexd. + [0] = "swpDMN", false, false, false, + "swpbDMN", false, false, false, + "strexDMN", "ldrexDN", "strexdDN", "ldrexdDN", + "strexbDMN", "ldrexbDN", "strexhDN", "ldrexhDN", +} + +local map_mulh = { + shift = 21, mask = 3, + [0] = { shift = 5, mask = 3, + [0] = "smlabbNMSD", "smlatbNMSD", "smlabtNMSD", "smlattNMSD", }, + { shift = 5, mask = 3, + [0] = "smlawbNMSD", "smulwbNMS", "smlawtNMSD", "smulwtNMS", }, + { shift = 5, mask = 3, + [0] = "smlalbbDNMS", "smlaltbDNMS", "smlalbtDNMS", "smlalttDNMS", }, + { shift = 5, mask = 3, + [0] = "smulbbNMS", "smultbNMS", "smulbtNMS", "smulttNMS", }, +} + +local map_misc = { + shift = 4, mask = 7, + -- NYI: decode PSR bits of msr. + [0] = { shift = 21, mask = 1, [0] = "mrsD", "msrM", }, + { shift = 21, mask = 3, "bxM", false, "clzDM", }, + { shift = 21, mask = 3, "bxjM", }, + { shift = 21, mask = 3, "blxM", }, + false, + { shift = 21, mask = 3, [0] = "qaddDMN", "qsubDMN", "qdaddDMN", "qdsubDMN", }, + false, + { shift = 21, mask = 3, "bkptK", }, +} + +local map_datar = { + shift = 4, mask = 9, + [9] = { + shift = 5, mask = 3, + [0] = { shift = 24, mask = 1, [0] = map_mul, map_sync, }, + { shift = 20, mask = 1, [0] = "strhDL", "ldrhDL", }, + { shift = 20, mask = 1, [0] = "ldrdDL", "ldrsbDL", }, + { shift = 20, mask = 1, [0] = "strdDL", "ldrshDL", }, + }, + _ = { + shift = 20, mask = 25, + [16] = { shift = 7, mask = 1, [0] = map_misc, map_mulh, }, + _ = { + shift = 0, mask = 0xffffffff, + [bor(0xe1a00000)] = "nop", + _ = map_data, + } + }, +} + +local map_datai = { + shift = 20, mask = 31, -- NYI: decode PSR bits of msr. Decode imm12. + [16] = "movwDW", [20] = "movtDW", + [18] = { shift = 0, mask = 0xf00ff, [0] = "nopv6", _ = "msrNW", }, + [22] = "msrNW", + _ = map_data, +} + +local map_branch = { + shift = 24, mask = 1, + [0] = "bB", "blB" +} + +local map_condins = { + [0] = map_datar, map_datai, map_load, map_load1, + map_loadm, map_branch, map_loadc, map_datac +} + +-- NYI: setend. +local map_uncondins = { + [0] = false, map_simddata, map_simdload, map_preload, + false, "blxB", map_loadcu, map_datacu, +} + +------------------------------------------------------------------------------ + +local map_gpr = { + [0] = "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc", +} + +local map_cond = { + [0] = "eq", "ne", "hs", "lo", "mi", "pl", "vs", "vc", + "hi", "ls", "ge", "lt", "gt", "le", "al", +} + +local map_shift = { [0] = "lsl", "lsr", "asr", "ror", } + +------------------------------------------------------------------------------ + +-- Output a nicely formatted line with an opcode and operands. +local function putop(ctx, text, operands) + local pos = ctx.pos + local extra = "" + if ctx.rel then + local sym = ctx.symtab[ctx.rel] + if sym then + extra = "\t->"..sym + elseif band(ctx.op, 0x0e000000) ~= 0x0a000000 then + extra = "\t; 0x"..tohex(ctx.rel) + end + end + if ctx.hexdump > 0 then + ctx.out(format("%08x %s %-5s %s%s\n", + ctx.addr+pos, tohex(ctx.op), text, concat(operands, ", "), extra)) + else + ctx.out(format("%08x %-5s %s%s\n", + ctx.addr+pos, text, concat(operands, ", "), extra)) + end + ctx.pos = pos + 4 +end + +-- Fallback for unknown opcodes. +local function unknown(ctx) + return putop(ctx, ".long", { "0x"..tohex(ctx.op) }) +end + +-- Format operand 2 of load/store opcodes. +local function fmtload(ctx, op, pos) + local base = map_gpr[band(rshift(op, 16), 15)] + local x, ofs + local ext = (band(op, 0x04000000) == 0) + if not ext and band(op, 0x02000000) == 0 then + ofs = band(op, 4095) + if band(op, 0x00800000) == 0 then ofs = -ofs end + if base == "pc" then ctx.rel = ctx.addr + pos + 8 + ofs end + ofs = "#"..ofs + elseif ext and band(op, 0x00400000) ~= 0 then + ofs = band(op, 15) + band(rshift(op, 4), 0xf0) + if band(op, 0x00800000) == 0 then ofs = -ofs end + if base == "pc" then ctx.rel = ctx.addr + pos + 8 + ofs end + ofs = "#"..ofs + else + ofs = map_gpr[band(op, 15)] + if ext or band(op, 0xfe0) == 0 then + elseif band(op, 0xfe0) == 0x60 then + ofs = format("%s, rrx", ofs) + else + local sh = band(rshift(op, 7), 31) + if sh == 0 then sh = 32 end + ofs = format("%s, %s #%d", ofs, map_shift[band(rshift(op, 5), 3)], sh) + end + if band(op, 0x00800000) == 0 then ofs = "-"..ofs end + end + if ofs == "#0" then + x = format("[%s]", base) + elseif band(op, 0x01000000) == 0 then + x = format("[%s], %s", base, ofs) + else + x = format("[%s, %s]", base, ofs) + end + if band(op, 0x01200000) == 0x01200000 then x = x.."!" end + return x +end + +-- Format operand 2 of vector load/store opcodes. +local function fmtvload(ctx, op, pos) + local base = map_gpr[band(rshift(op, 16), 15)] + local ofs = band(op, 255)*4 + if band(op, 0x00800000) == 0 then ofs = -ofs end + if base == "pc" then ctx.rel = ctx.addr + pos + 8 + ofs end + if ofs == 0 then + return format("[%s]", base) + else + return format("[%s, #%d]", base, ofs) + end +end + +local function fmtvr(op, vr, sh0, sh1) + if vr == "s" then + return format("s%d", 2*band(rshift(op, sh0), 15)+band(rshift(op, sh1), 1)) + else + return format("d%d", band(rshift(op, sh0), 15)+band(rshift(op, sh1-4), 16)) + end +end + +-- Disassemble a single instruction. +local function disass_ins(ctx) + local pos = ctx.pos + local b0, b1, b2, b3 = byte(ctx.code, pos+1, pos+4) + local op = bor(lshift(b3, 24), lshift(b2, 16), lshift(b1, 8), b0) + local operands = {} + local suffix = "" + local last, name, pat + local vr + ctx.op = op + ctx.rel = nil + + local cond = rshift(op, 28) + local opat + if cond == 15 then + opat = map_uncondins[band(rshift(op, 25), 7)] + else + if cond ~= 14 then suffix = map_cond[cond] end + opat = map_condins[band(rshift(op, 25), 7)] + end + while type(opat) ~= "string" do + if not opat then return unknown(ctx) end + opat = opat[band(rshift(op, opat.shift), opat.mask)] or opat._ + end + name, pat = match(opat, "^([a-z0-9]*)(.*)") + if sub(pat, 1, 1) == "." then + local s2, p2 = match(pat, "^([a-z0-9.]*)(.*)") + suffix = suffix..s2 + pat = p2 + end + + for p in gmatch(pat, ".") do + local x = nil + if p == "D" then + x = map_gpr[band(rshift(op, 12), 15)] + elseif p == "N" then + x = map_gpr[band(rshift(op, 16), 15)] + elseif p == "S" then + x = map_gpr[band(rshift(op, 8), 15)] + elseif p == "M" then + x = map_gpr[band(op, 15)] + elseif p == "d" then + x = fmtvr(op, vr, 12, 22) + elseif p == "n" then + x = fmtvr(op, vr, 16, 7) + elseif p == "m" then + x = fmtvr(op, vr, 0, 5) + elseif p == "P" then + if band(op, 0x02000000) ~= 0 then + x = ror(band(op, 255), 2*band(rshift(op, 8), 15)) + else + x = map_gpr[band(op, 15)] + if band(op, 0xff0) ~= 0 then + operands[#operands+1] = x + local s = map_shift[band(rshift(op, 5), 3)] + local r = nil + if band(op, 0xf90) == 0 then + if s == "ror" then s = "rrx" else r = "#32" end + elseif band(op, 0x10) == 0 then + r = "#"..band(rshift(op, 7), 31) + else + r = map_gpr[band(rshift(op, 8), 15)] + end + if name == "mov" then name = s; x = r + elseif r then x = format("%s %s", s, r) + else x = s end + end + end + elseif p == "L" then + x = fmtload(ctx, op, pos) + elseif p == "l" then + x = fmtvload(ctx, op, pos) + elseif p == "B" then + local addr = ctx.addr + pos + 8 + arshift(lshift(op, 8), 6) + if cond == 15 then addr = addr + band(rshift(op, 23), 2) end + ctx.rel = addr + x = "0x"..tohex(addr) + elseif p == "F" then + vr = "s" + elseif p == "G" then + vr = "d" + elseif p == "." then + suffix = suffix..(vr == "s" and ".f32" or ".f64") + elseif p == "R" then + if band(op, 0x00200000) ~= 0 and #operands == 1 then + operands[1] = operands[1].."!" + end + local t = {} + for i=0,15 do + if band(rshift(op, i), 1) == 1 then t[#t+1] = map_gpr[i] end + end + x = "{"..concat(t, ", ").."}" + elseif p == "r" then + if band(op, 0x00200000) ~= 0 and #operands == 2 then + operands[1] = operands[1].."!" + end + local s = tonumber(sub(last, 2)) + local n = band(op, 255) + if vr == "d" then n = rshift(n, 1) end + operands[#operands] = format("{%s-%s%d}", last, vr, s+n-1) + elseif p == "W" then + x = band(op, 0x0fff) + band(rshift(op, 4), 0xf000) + elseif p == "T" then + x = "#0x"..tohex(band(op, 0x00ffffff), 6) + elseif p == "U" then + x = band(rshift(op, 7), 31) + if x == 0 then x = nil end + elseif p == "u" then + x = band(rshift(op, 7), 31) + if band(op, 0x40) == 0 then + if x == 0 then x = nil else x = "lsl #"..x end + else + if x == 0 then x = "asr #32" else x = "asr #"..x end + end + elseif p == "v" then + x = band(rshift(op, 7), 31) + elseif p == "w" then + x = band(rshift(op, 16), 31) + elseif p == "x" then + x = band(rshift(op, 16), 31) + 1 + elseif p == "X" then + x = band(rshift(op, 16), 31) - last + 1 + elseif p == "Y" then + x = band(rshift(op, 12), 0xf0) + band(op, 0x0f) + elseif p == "K" then + x = "#0x"..tohex(band(rshift(op, 4), 0x0000fff0) + band(op, 15), 4) + elseif p == "s" then + if band(op, 0x00100000) ~= 0 then suffix = "s"..suffix end + else + assert(false) + end + if x then + last = x + if type(x) == "number" then x = "#"..x end + operands[#operands+1] = x + end + end + + return putop(ctx, name..suffix, operands) +end + +------------------------------------------------------------------------------ + +-- Disassemble a block of code. +local function disass_block(ctx, ofs, len) + if not ofs then ofs = 0 end + local stop = len and ofs+len or #ctx.code + ctx.pos = ofs + ctx.rel = nil + while ctx.pos < stop do disass_ins(ctx) end +end + +-- Extended API: create a disassembler context. Then call ctx:disass(ofs, len). +local function create(code, addr, out) + local ctx = {} + ctx.code = code + ctx.addr = addr or 0 + ctx.out = out or io.write + ctx.symtab = {} + ctx.disass = disass_block + ctx.hexdump = 8 + return ctx +end + +-- Simple API: disassemble code (a string) at address and output via out. +local function disass(code, addr, out) + create(code, addr, out):disass() +end + +-- Return register name for RID. +local function regname(r) + if r < 16 then return map_gpr[r] end + return "d"..(r-16) +end + +-- Public module functions. +return { + create = create, + disass = disass, + regname = regname +} + -- cgit v1.2.1